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spectrumMETAL FORMING

October 2010

The Magazine for Automation Solutions in the Metal Forming Industry

Innovative motion control technique for servo presses

Impressive Results

C o n t e n t s s p e c t r u m M E T A L F O R M I N G 2 0 1 0

p Editorial

p Servo Spindle Presses

4 Impressive ResultsS. Dunkes GmbH, Germany

p Servo Presses

7 With the Power of Two ServosBurkhardt GmbH, Germany

p Servo Punch Presses

10 Effi cient PunchersDimeco Alipresse, France

p Multi-Stage Transfer Press

12 Transfer to SuccessRaster-Zeulenroda Raster-Zeulenroda Werkzeugmaschinen GmbH, Germany

p Hydraulic Wheel Set Press

14 A Leap ForwardHegenscheidt-MFD GmbH & Co. KG, Germany

p Retrofi t

16 Making Old into NewFord Motor Company, Belgium

18 More Productive with Servo-TransfersAudi AG, Germany

20 Retrofi tted for the FutureLasco Umformtechnik GmbH, Germany

21 A “Smart” Choice for Handling Steel CoilsAutomatic Feed Company, USA

p Mechatronics

22 Productive and Flexible PressesComplete package for servo-presses

PublisherSiemens Aktiengesellschaft,Gleiwitzer Str. 555, 90475 Nuremberg, Germany

Industry Automation DivisionCEO Anton S. Huber

Drive Technologies DivisionCEO Klaus Helmrich

Editorial Responsibility in Accordance with the German Press LawArno Hoier

Cover picture: P. Koerber

Publishing House

Publicis Publishing,Part of Publicis ProP.O. Box 32 40, 91050 Erlangen, GermanyTel.: +49 (0) 91 31 / 91 92-5 01Fax: +49 (0) 91 31 / 91 92-5 [email protected]

Editorial staff: Dr. Beate Bellinghausen, Gabriele Stadlbauer

Layout: R. Degenkolbe

Copy editor: Sabine Zingelmann

DTP: Mario Willms

Printed by: Wünsch, Neumarkt, Germany

Circulation: 1,500

The following products are registered trademarks of Siemens AG:

CP 343-1, ET 200, DRIVE-CLiQ, MICROMASTER, MP177, MP277, MP377, S7-300, S7-400, SCALANCE, SIMATIC, SIMATIC Multi Panel, SIMATIC NET, SIMATIC Panel PC, SIMATIC Safety Integrated, SIMOREG, SIMOTION, SIMOTION SCOUT, SINAMICS, SINUMERIK, SITRANS, TOTALLY INTEGRATED AUTOMATION, WinCC

Wenn Warenzeichen, Handelsnamen, technische Lösungen oder dergleichen nicht besonders erwähnt sind, bedeutet dies nicht, dass sie keinen Schutz genießen.

Job number: 002800/27446

Order number: E20001-A1410-P620-X-7600

The information provided in this magazine contains merely general descriptions or characteristics of performance which in case of actual use do not always apply as described or which may change as a result of further development of the products. An obligation to provide the respective characteristics shall only exist if expressly agreed in the terms of contract.

© 2010 by Siemens Aktiengesellschaft Munich and Berlin.

All rights reserved by the publisher.

This edition was printed on environmentally friendly chlorine-free paper.

Printed in Germany

spectrum METAL FORMING 2010

Thanks to the retrofi t, Audi produces approximately 30 percent more body interior parts

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Complex drawn parts can be manufactured on the step forming machines from Raster

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Burkhardt uses the new 1FW3 direct drives 1FW3 – for higher productivity

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2 spectrum METAL FORMING 2010

E d i t o r i a l

spectrum METAL FORMING 2010 3

Dear readers

Increasing productivity with smaller batch sizes – those are the challenges facing companies in the fi eld of forming technology today. The basis for fl exible and productive machines is a homo-

geneous automation system that can be adapted modularly and scalably to the respective require-ments. We offer the right answers with our products, systems and solutions. You can rely on our metal forming team for the implementation. We are there to support you with our special knowledge for all your problems, whether with hydraulic presses, servo presses or handling systems. You can count on this support from the design and implementation right through to the commissioning and optimi-zation. Come and see our service range for your-

selves at the Euroblech 2010 in Hall 11 Booth G38.

The fair presentation focuses on future oriented solutions for servo presses with efficient energy management based on Simotion motion control systems and the Sinamics drive system – according to the motto “Smart Metal Forming Solutions”. Because with the unique metal forming Solution Package this system platform creates the ideal basis for accomplishing the tasks in forming technology without any problems. We are also presenting innovative solutions for hydraulic presses and handling systems and new safety concepts.

Another highlight is the Press Line Simulation software. This enables you to digitally project and simulate the entire sheet forming and sheet transport process to allow virtual optimization. The motion data determined by simulation can be transferred completely to Simotion.

Experience homogeneous automation of forming machines from one provider!

Your metal forming team


The idea for synchronized drawing comes from the Dresden Fraunhofer Institute for Machine Tools and Forming Technology (IWU): when

the ram and die cushion of a press move in a phase-shifted rhythm adapted to the material properties and divide the drawing process into a number of

small forming processes, almost without metal holders, the failure limits of the sheet metal are reached later than in a press stroke made in one movement. Optical marks and unevenness in the fl ange area of the workpiece are system-related and must be accepted in the application.

S e r v o S p i n d l e P r e s s e s

For the new press generation, Dunkes developed an effi cient drive concept for the ram and die cushion

S. Dunkes GmbH, Germany p

Impressive Results

Newly developed servo-spindle presses with motion

control create the conditions for the innovative

technique of synchronized drawing.

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Until recently, there was no machine that could move the masses of ram, die cushion, and forming tool up and down dynamically, precisely, in a syn-chronized manner, and with a frequency of up to 30 Hz, as is necessary for synchronized drawing. To achieve this, the phases of jolt, acceleration, andvrunning up and braking nine axes with motion amplitudes of less than 0.1 mm must be synchro-nized exactly in a time frame of 33 ms.

Dunkes GmbH based in Kirchheim/Teck, Germany, manufactures presses for various technologies. In addition to stamping, deep drawing, and assembly presses, the company also builds straightening, powder, wheel mounting, and dismounting presses as well as spotting and tryout presses. For a new generation of presses, Dunkes developed an effi cient servo-spindle drive concept for rams and die cush-ions in collaboration with the Fraunhofer Institute for Machine Tools and Forming Technology (IWU). This enables repetitively accurate positioning of less than 0.01 mm under centric load and a press portal that is fit for the new servo-spindles in terms of rigidity and the quality of the ram and die cushion control but also in terms of the extremely dynamic response and high degree of precision.

Repetitively accurate positioningFive water-cooled 1FW3 torque motors with a power of 39 kW each are used as drives for the ram-side 400 kN spindles – four motors for the ram and one motor for the sheet pressure pad. Four water-cooled 1FW6 torque motors of 12.5 kW each were installed for the die cushion. In connection with frequency converters from the Sinamics S120 series, the torque provided by the torque motors gives the spindles a great dynamic response with very good control at the same time. The nominal values, preset isochro-nously up to 2,000 times per second by the Simotion P350-V3 motion control system (bus cycle 500 ms with Profi net with IRT [isochronous real time]), are adjusted 800 times per second at the drive level. The high control and positioning accuracy meets the requirements of the demanding applications that characterize the press manufacturer’s market. It is not only a question of increasing productivity requirements but also of the precision of the press technology. And it is becoming increasingly expen-sive to meet these demands with hydraulic presses. “A well-controlled servo-electric spindle is faster, more rigid, and more precise than a hydraulic axis even under consideration of all basic conditions,” explains managing director Ralf Dunkes. “Develop-ment of force, acceleration, and precision are avail-able with repetitive accuracy throughout the stroke. This is unique.”

Dunkes can also use this technology in other product areas. For example, assembly presses can be imple-

mented with end-position accuracy in the microme-ter range, as required in ball head assembly, for example. During stamping, all the force is taken out of the movement at a defi ned position just before the tool breaks through the sheet so that a cutting impact is reliably prevented without any additional devices and a very clean cut is produced.

Software computes optimum sequence of movementsContact between the IWU and Dunkes has existed for many years. Based on a specifi cation of the Dresden IWU, the ES 4 160/120 press with a ram force of 1,600 kN was developed in Kirchheim and handed over to the IWU laboratory for testing of the technol-ogy of this special drawing process. The ram and die cushion of the press are equipped with four or fi ve electronically symmetrized servo-spindles. The original requirement was that the ram equipped with forming tools execute a predefi ned sequence of movements at least 15 times per second in synchro-nization with the die cushion. This value has since been bettered.

» A well-controlled servo-electric

spindle is faster, more rigid, and

more precise than a hydraulic axis

even under consideration of all basic

conditions.«Ralf Dunkes, Managing Director Dunkes GmbH

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S e r v o - S p i n d l e P r e s s e s

The press movement is distance-controlled until the die hits the material. In the actual forming process, the top and bottom of the tool are guided either with a defined distance or independently of each other. Periodic switching between distance- and force-controlled motion control is possible. Software developed jointly by Dunkes and the IWU computes the optimum sequence of movements depending on the material and tool properties. The program offers the operator a practical user interface and therefore a simple, intuitive introduction to the new tech-nology.

The fi rst drawing tests with the new press were convincing. Two types of kinematics were compared under identical basic conditions: one was a conven-tional deep drawing process with the minimum possible cushion force, and the other was a forming process with the “synchronized drawing” option switched on.

Synchronized drawing immediately achieved double the drawing depth. This tendency was also con-firmed in the subsequent tests. Other factors in addition to the high forming performance contribute to the productivity and economy of this new press type. For instance, no hydraulic oil and no oil pumps and pressure accumulators are required for servo-spindle presses. This saves space and eliminates the need for complicated and dangerous handling of hydraulic oil.

Energyeffi cient and economicServo-spindle presses also use energy effi ciently. This begins with the drives of the die cushion oper-ating in generator mode when displacing the die cushion. Part of the energy used by the ram is fed back into the connected intermediate circuit of the spindle drives, a clear advantage over the energy losses with hydraulic cushions. In addition, the energy drawn from the supply network in this pro-cess phase is reduced.

However, synchronized drawing is only economically useful with feedback. At 30 Hz, greater current fl ows are moved backward and forward between the motor and the intermediate circuit in a cycle of 33 ms, and the energy released during braking is collected. Actively controlled feeding is available for the Sinamics S120 drive family used by Dunkes, which minimizes the retroactive effect of the press on the supply network. In addition, it contributes to the compensation of the phase offset between current and voltage caused by other machines.

However, the greatest contribution to energy savings is promised by introducing the new technology of synchronized drawing. It is conceivable that great drawing depths can be achieved by a press in one

action. It should also be possible to produce complex drawn parts with this technique without any prob-lems. Intermediate annealing of the parts can be omitted, and lower-cost lubricating oil coats and sheet metal qualities can be used. There is no cut-ting impact, and the wear on the tool and machine is reduced. Better cutting quality is also achieved.

Optimized for new challengesIn view of the considerable process advantages of the new forming technology, the interest of the producing industry in the servo-spindle presses of the German machine manufacturer is great. But the

developers are interested in sustainable rather than rapid success, as managing director Ralph Dunkes makes clear in light of the excitement with the achieved results: “The process and our new press design are being tested systematically at the IWU in Dresden. The industry needs a stable process with high process security and availability, which we as a machine manufacturer want to provide. We will not launch synchronized drawing onto the market until the process and the machine are mature enough.” p

infocontact

www.siemens.com/[email protected]

The new servo-spindle press from Dunkes for effi cient synchronized drawing enables great drawing depths and is oil-free and energy savingD

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S e r v o P r e s s e s

Burkhardt GmbH, Germany p

With the Power of Two ServosBurkhardt builds a 320 t servo-press with two torque motors,

a motion controller, and safety control from Siemens.

With new automation concept: the 320 ton servo

press from Burkhardt


S e r v o P r e s s e s

Powerful 1FW3 torque motors bring the new servo-press from Burkhardt up to maximum productivity

Burkhardt GmbH in Bayreuth, Germany, has further developed its proven servo-press concept and transferred it successfully to a

320 t press. One of the major new features is two 500 kW 1FW3 torque motors that transfer their torque of 5,000 Nm each to the press ram through a distributor gearbox. This takes place following the tried and tested cam disc principle – that is, with optimized drive movements in all phases of the press stroke: highly dynamically in the idle stroke past the upper dead point, and in the operating range indi-vidually adapted to the respective tool and pressing. This enables up to 140 strokes per minute, is gentle on the press, and ensures long tool life, which the owner found to be a convincing argument for pur-chase.

Simple modularization by integrationWith further development, the press manufacturer has geared his automation concept to the future and relocated the tasks previously implemented on a separate process control to the programmable logic control (PLC) section of the Simotion D445 motion control system.

The most powerful variant enables a reduction of the system cycle from the previous 2 to now 1 ms. It was and is therefore no great challenge to control additional drive axes and implement functions such as press force measurement, tool locking, or cam and feed control in the motion controller, entirely

without time-consuming interface programming and adaptation. In this specifi c case, the drive of the feed unit, a converter of the modular Sinamics S120 series (AC/AC) with its own feed, is integrated. This allows the interaction of feed and ram movement to be matched very easily, fl exibly, and harmoniously by electric cams. In addition, Simotion also controls the variable-speed standard Sinamics G120 (AC/AC) drives of the reel and straightening machine.

The integration also creates the conditions for sim-plifi ed modularization of the automation. This allows programs to be created for complete press lines, including the reel, feed, and straightening unit, and for parts of it to be transferred to a low-cost single-axis D410 motion controller without any great engineering effort. The autarkically automated periphery from Burkhardt can therefore be inte-grated very easily into existing lines. The high com-puting performance also allows online calculation of

» Automatic generation of an

individual cam disk for any

tool based on relevant basic

press data at the push of a

button, only Simotion is

capable of this at present.«Stephan Seibel, Group Leader Electrical Design/Forming Technology, Burkhardt GmbH


optimized ram movements. Stephan Seibel, group leader, Electrical Design/Forming Technology, points out: “The wheat is soon separated from the chaff on the topic of cam disc calculation; there are few that can do it. Automatic generation of an individual cam disc for any tool or pressing based on appropriate basic press data at the push of a button – only the Simotion system from Siemens is capable of that at the moment, to my knowledge.” Experience shows that this enables increases in productivity of 20 percent or more.

Safety and energy effi ciencyBurkhardt is also becoming more consistent in terms of safety technology. Safety functions are imple-mented on a fail-safe Simatic S7-300F (CPU S7-317F-2 PN/DP) and via distributed Simatic ET 200S I/O modules (with high-feature head module) via Profi net and the Profi safe protocol as well as with the use of integrated basic safety functions such as Safe Stop (SS1) and Safe Torque Off (STO) of the Sinamics S120 drive system on the main drives.

The servo concept already contributes to savings elsewhere: instead of the conventional fl ywheel, a practically maintenance-free capacitor package (nine capacitor batteries with a capacity of 132 mF each) buffers the braking energy in generator operation of the motors and provides it again in the operating stroke. In this way, both main motors can be sup-plied with a nominal power of 500 kW each via a

A u t o m a t e d f o r O p t i m u m R a m C o n t r o l

To support the machine manufacturer and user, Siemens has developed SimoPress Servo, an application package for the total control of servo-presses with an integrated cam generator based on Simotion systems. With this, the press user can determine an energy- and process-optimized ram sequence very easily and individually for every tool and the corresponding transfer devices – that is, create ideal process conditions, all without any additional engineering effort or having to consult spe-cialists from the press manufacturer or the control system/drive manufacturer.

Burkhardt has adapted the cam tool to its look and feel, which is familiar in the fi eld, and has generated a simple input mask for the visualization under WinCC fl exible. This mask contains input fi elds for the most important basic data of the forming process, including tool opening and closing angles, the position and stroke before and after the lower dead point, and the nominal stroke rate. From these few basic data, the Simotion system calcu-lates the optimum ram kinematics for the tool within a split second at the push of a button, once at the initial setup and once after editing. The result is a motion profi le with smoothly fl owing transitions that are easy on the tool and material, that avoid excessive power and torque peaks, and that keep the drive power consistently

within the necessary limits. The machine-specifi c maxi-mum values defi ned in the drive design are automati-cally taken into consideration – for example, for motor speed, motor acceleration, jolt, motor power, ram speed, and acceleration, as well as the optimum forming speed.

This ensures that the permissible limits of the press and the powertrain are fully exploited but not exceeded. The fi eld-weakening range of the 1FW3 torque motor is also exploited. These motors can be operated at reduced torque up to twice their nominal speed, which makes them ideal for dynamic ram movements outside the actual operating range.

Undefi ned distance or switching points can be moved with the electronic handwheel on the control panel and applied to the calculation at the push of a button, with optimized motion curves saved and read back in. This enables very easy and straightforward setup of new tools, and the production press can be used with mini-mum risk, also for the manufacture of production sam-ples. The sequence of movements is always performed with optimized [timing, process, and energy consump-tion, which leads to much greater stroke rates in the lower dead point at equal or even reduced ram speed, with constant and in many cases even better forming quality.

single feed unit with just 80 kW. The energy buffer not only considerably reduces energy and operating costs but also simplifi es the entire structure of the press and hence the maintenance and spare parts stocking.

Extended service possibilitiesThe now horizontally and vertically consistent auto-mation concept also offers advantages in terms of service and maintenance. The Simatic Panel PC 677B not only allows local inspection but also insight right up to the drive level via Internet, which makes it easier to plan service assignments on-site or to dispense with them altogether. The manufacturer can support the owner remotely with troubleshoot-ing in the event of any problems and can therefore reduce downtime. “The more automation compo-nents from Siemens we use, the more interesting the idea of a repair-service contract becomes,” Seibel says. This would allow Burkhardt to exploit the global presence of the world market leader and to contact expert personnel and/or procure spare parts quickly when required. p

info

contact



Dimeco Alipresse, France p

Effi cient Punchers

Coil feeding systems, machines, and accesso-ries for sheet metal fabrication are one particular focus in the range of products

offered by Dimeco Alipresse, based in the Besançon region of France. Another core element is fl exible, automatic systems for punching, forming, and

assembling. The most recent develop-ment for the company, which is part of the globally active Dimeco group, is the very fi rst “fully electric” punching machine, the Linapunch® MC-E. Inno-vative control and drive technology from Siemens, the preferred choice for many years, forms the backbone of this new machine.

Servo-dynamic instead of hydraulicThe main difference compared with the former design: instead of rows of hydraulic stamps, the synchronous operation of two 1FK7 servomotors controls the stroke movement of a central slide plate using toggle lever kinematics. This process achieves up to

200 strokes per minute when punching and punching forces of 2 × 200 kilonewtons. The top and bottom dead centers of the toggle lever system are adjust-able and can be confi gured freely, resulting in opti-mized power ratios with extremely short cycle times.

However, a newly developed component of the Linapunch® MC-E is crucial for ensuring the opti-mum number of strokes: punching is performed by two strikers (hammers) located between the slide plate and up to 52 tools in the machine. These strikers are operated independently of one another in the X and Y directions via servomotors and

toothed belts, located above each punching tool pre-positioned in a transverse direction above the sheet metal in order to then perform punching. This positioning of the strikers starts with the slide plate moving upward; as a result, the full return stroke is used, saving valuable cycle time. As before, the stamping tools are mounted in pairs on the sides of the assembled cassettes, which are also operated independently of one another in a transverse direc-tion via ball bearing spindles and servomotors. This enables the tools to reach almost any point on the sheet metal as it is being transported lengthways through the machine by the coil.

Motion controller for optimum dynamicsMovement is calculated and coordinated by Dimeco’s Simostar control system, which features the drive-based motion control system Simotion and a Simatic MP 377 Multi Panel with a 12-inch touch display. The centerpiece is the Simotion D435 control module, which in this design is integrated into the Sinamics S120 drive system. This drive system comprises a common supply and multiple power modules, which coordinate the positioning of a total of 13 axes. In addition to the nine servo-axes in the feeder and basic machine, four additional servo-axes are located in the customized stacking table. The motion control system also monitors the working areas of both punch heads to eliminate collisions and ensuing damage. In addition, there are various auxiliary and conjugate axes, some of which are operated by frequency converters from the Micromaster 440 series and some by motor starters in the Simatic ET 200S distributed station. A scalance switch compati-ble with Profi net connects the system to the user’s company network and enables maintenance and diagnostics to be performed on the system remotely right up to the drives.

Thanks to motion control and servomotors, the fi rst “fully

electric” punching machine produced by the French global

press manufacturer Dimeco is quick, fl exible, and effi cient

in power use when it comes to punching.

S e r v o P u n c h P r e s s e s

A drive-based Simotion controller coordinates and calculates the movements of the punch press


infocontact


With the mobile Simatic MP 377 Multi Panel con-nected to the main machine – used for program-ming, operating, and monitoring the Linapunch® and managing tool, parts, and job lists – a thin client of the same design and with an identical user inter-face is connected via Industrial Ethernet. This allows the decoiler and straightener to be installed in a user-friendly position at the infeed.

Twice the number of strokes, half the power consumption“Almost doubling the number of strokes and halving energy consumption compared to similar hydraulic machines are clear advantages for operators of our Linapunch® MC-E,” says Jean-Louis Nou, head of electrical engineering at Dimeco Alipresse. More-over, the MC-E is now much more compact. It also offers a high degree of fl exibility, as the operator can create new programs or edit existing programs while production is running, and transfer them to the control system at the push of a button. This means that even the smallest of batch sizes can be pro-cessed fl exibly. In addition, a broad range of sheet metal lengths can be processed directly from the coil, adding to the high degree of fl exibility.

The French company has always implemented com-plex automation solutions such as these without any outside assistance. Dimeco was one of the first manufacturers of punching machines to introduce Simotion as soon as it came onto the market. So today you can build on the experience gained from more than 250 systems in the fi eld. The next stage in development will be an even better, dynamically regulated method of coordinating the decoiler, straightening machine and punching machine, to eliminate the loop that is currently commonly seen. “We rely on Siemens, because as a global company we are happy to benefit from the presence of a prestigious provider in all our markets,” says manag-ing director Laurent Deschamps. “By doing this, we have quick access to all of the components and expertise it offers. And that is something our cus-tomers value too.” p

With 1FK7 servomotors, the Linapunch® MC-E punching machine achieves the optimum number of strokes and high punching forces

» We rely on Siemens,

because as a global

company we are happy to

benefi t from the presence

of a prestigious provider in

all our markets.«Laurent Deschamps, Geschäftsführer

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Raster-Zeulenroda Werkzeugmaschinen GmbH, Germany p

Transfer to Success

Highly productive transfer forming automatic presses of the PAUSt series (Presse Automat Umformen in Stufen) with nominal forces of

160 to 5,000 kN are among the heavyweights in the portfolio of Thuringia’s Raster-Zeulenroda Werkzeug-maschinen GmbH. A well-known supplier placed an order for a transfer forming automatic press for man-ufacturing fi lters for the automotive industry. With a stroke of 630 mm, this order exceeded all previously built dimensions by far. The required nominal press-ing force was 260 t. Except for the large crankshaft, the machine manufacturer implemented the two-piston-rod press with an external cutting stage and eight forming stages in-house – including a modern control and drive solution from Siemens.

A forming process with a high cycle rateFor the manufacture of drawn parts on the transfer forming automatic press, a 600- to 800-mm-wide metal strip is straightened from the coil and cut into

blanks. These are placed onto the transport belt using a vacuum suction device moved vertically by means of a pneumatic cylinder. The transport belt moves the blanks into the work room, where they are taken over by a gripper and transfer system that is mechanically coupled to the crank movement of the machine. It transports the blanks by one forming station in each press cycle. Ejectors ensure that the blanks are pushed out of the dies. The large press stroke allows drawn parts with a length of up to 300 mm to be manufactured. At the end of the forming process, these parts are transferred to the lattice box pallets in a controlled fashion using two-axis han-dling. At a cycle rate of 40 strokes per minute, the automatic press delivers a fi nished drawn part every 1.5 seconds.

Safety includedThe complex forming process is precisely controlled, driven, and monitored with automation technology

Renowned press manufacturer Raster designed its largest

transfer forming automatic press to date with a coordinated

automation and drive package using fail-safe standard

components from one source.

M u l t i - S t a g e T r a n s f e r P r e s s

With a stroke of 630 mm, this PAUSt 260 transfer forming automatic press is one of the largest in the history of Thuringia’s Raster-Zeulenroda company

PAUSt transfer forming automatic presses manufacture complex sleeve- or cup-shaped drawn parts in a particularly effi cient and cost-effective manner

Phot

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Ras

ter


infocontact


from Siemens that is already standard on the smaller presses of the Thuringian company and that was in this case specifi ed by the operator. The use of a fail-safe Simatic S7-300F, with the CPU S7-317F-2 DP in this case, was a fi rst for the machine manufac-turer and automotive supplier. This controller con-trols the entire process sequence, including the safety-oriented functions, making a separate safety controller unnecessary.

“The main advantage is the greatly reduced wiring effort, which saves several days of work on machines of this size,” declares Dipl.-Ing. (FH) Holger Schwab, electrical planner and application developer at Raster-Zeulenroda. Standard and fail-safe periphery modules from the ET 200S product line communi-cate with the fail-safe CPU using the same Profi bus cable and Profi safe profi le.

The prefabricated Simatic press safety modules make the engineering easier. They are certifi ed according to EN 954-1 category 4, EN 61508 SIL3 (Safety Integrity Level), DIN EN 62061, and EN ISO 13849-1 PL e. They can also be easily combined with each other and quickly lead to an executable and clear safety program – saving time, effort, and cost.

The planning procedure was further simplifi ed by the safety functions implemented directly in the Sinamics S120 drive system. This also saves on safety hardware and contributes to very short reac-tion times, creating the highest possible degree of safety. The modular drives with servomotors on the main drive, transport, and ejectors are also new. The generational change is made clear by a 142 kW compact asynchronous servomotor from the 1PH7 series on the main drive with high speed stability. It ensures constant conditions during the entire form-ing process. The precise and dynamic drive control via Sinamics S120 makes a signifi cant contribution to this. The drive assembly consists of four CU320 control units, a common power supply, and power modules that are connected to each other using the

Drive-Cliq digital system bus. The motors are auto-matically recognized by the associated control unit based on their electronic rating plates.

Process transparency in all stagesFor setting up, operating, and monitoring the auto-matic forming presses, the Thuringian company developed an interface for a Simatic Multi Panel MP377 with button operation, based on the Simatic WinCC fl exible visualization system.

A great deal of importance was attached to exten-sive diagnostic options. Thus, there are 1,400 messages that lead the operator as quickly as possi-ble to the source of the problem in the event of a fault. This keeps downtime to a minimum and helps maintain high productivity. In especially tricky or urgent situations, a specialist from the machine manufacturer can dial in from the offi ce and provide support to the operator: a CP343-1 Lean communi-cation processor from the Simatic Net product line creates a secure tunnel using a virtual private net-work and the higher-level host computer. During ordinary operation, the press and host computer exchange order specifi cations and current produc-tion data over the CP.

“Getting everything from one source ensured that all control and drive components would be optimally tailored to each other,” explains Schwab. “Siemens has given us comprehensive support in the handling of new products and processes, allowing us to implement this large project on time and with the required quality.” p


The wheel disks for wheel sets of railroad cars were previously pressed onto the axis one side at a time, one after the other – with a corre-

sponding time loss. The world’s fi rst hydraulic simul-taneous wheel set press to be tried and tested in three-shift operation, manufactured by Hegenscheidt-MFD GmbH & Co. KG, puts an end to this. It delivers a complete wheel set approximately every six minutes – a time savings of three to four minutes compared to previous machines, which means a great increase in productivity in continuous operation.

In order to press the wheel disks against each other at the same time, an extremely powerful controller was needed for highly dynamic control of the hydraulic axes in particular. The developers found it

in the PC-based version of the Simotion P350-3 motion control system. “What was particularly convincing was the continuous real-time communi-cation between the controller and the hydraulic and electric drive axes using Profi net with isochronous real time [IRT] and the integration of motion control, control, and HMI functionality in one unit,” explains Jürgen Winnertz from the electrical design team of the machine manufacturer.

Dynamically regulatedOn both sides of the press, one cylinder sits concen-trically in each of the press cylinders. These can be operated both in themselves and laterally indepen-dent of each other on a travel- and force-controlled basis. This allows a dynamic and precise pressing

H y d r a u l i c W h e e l S e t P r e s s

The productive wheel set press with a patented hydraulic concept benefi ts from the high level of regulating dynamics of the Simotion P350-3 motion controller

Hegenscheidt-MFD GmbH & Co. KG, Germany p

A Leap ForwardWith the Simotion P350-3 PC-based motion

control system, the world’s fi rst hydraulic

wheel set press to work simultaneously from

two sides made a giant leap forward.


infokontakt


process that can be exactly reconstructed when used in conjunction with a high-resolution mea-suring system.

The process calls for the wheels to be centered within the press and the axis to be clamped and centered between the quills (hollow shafts for the transmission of torque) of the centering cylinder. In this clamping process, the wheels are carried along with the centering equipment until just in front of the press fit on the axis. Then the press cylinders press the wheel disks simultaneously into the speci-fi ed position on the axis.

Various roughness depths and dimension tolerances lead to various press forces that must be recorded continuously and quickly compensated for. A partic-ular challenge was the fast and seamless switching between position and force regulation that was required during the clamping and centering of axes of various lengths.

Pure performance thanks to Profi net with IRTThe PC-based Simotion P350-3, complemented by an MCI-PN communication board, functions here as a

Profi net I/O controller and enables easy setup of indi-vidual bus topologies. With fast peripheral modules from the Simatic ET 200S HS series in the machine, real-time communication is possible via Profi net with IRT with bus and servo cycle times of 250 micro-seconds. The motion control specialists from the Siemens application center in Cologne developed specifi c modules for demanding hydraulic regulation and other functions. They also provided support during initial commissioning.

The 1FK7 series servomotors are supplied with power using a converter of the modular Sinamics S120 drive family, which is optimized for operation with Simotion controllers. All components are con-nected with each other using the fast Drive-Cliq

digital system bus and integrated into the Profi net network as Profi net I/O devices using a CBE20 com-munication board. This allows all components involved in the press process to continuously com-municate with each other in real time, something that simplifi es the engineering and makes diagnos-tics easier during operation.

PLC and HMI functionality includedThe PC-based Simotion variant also integrates the entire process control and the linking of the press with the local periphery and upstream and down-stream plant parts. These are connected using

interface module IM154-4 PN or DP/DP couplers. Simotion P350 can be used in nearly any software program capable of running under Windows XP and can thus also take on demanding visualization tasks. Hegenscheidt decided to use the Simatic WinCC fl exible HMI system and developed a multilanguage user interface for a Simotion panel front with a 15-inch touchscreen. For the process-oriented setup of wheel centering equipment and transport carts, a portable mini handheld control unit from the Sinumerik portfolio is used.

Upon the request of the customer, the machine manufacturer also installs powerful tools for teledi-agnosis and telemaintenance right into the drive level.

The customer can choose Web functions that are directly integrated into the motion control system and accessible over Industrial Ethernet or Profi net and the WinCC fl exible/Sm@rtService option for diagnosis, maintenance, and remote control via the Internet. With this universal accessibility for diagnos-tics, the machine manufacturer is also making a leap forward in terms of service quality by being able to quickly recognize and rectify faults (or import updates) from a central location. This avoids time and cost-intensive service visits as well as downtime and the associated lost production. p

» What was particularly convincing

was the continuous real-time

communication between the

controller and the hydraulic and

electric drive axes.«Jürgen Winnertz, Electrical Design, Hegenscheidt-MFD GmbH & Co. KG

Simotion controls and monitors the pressing process and archives important parameters during the joining of the safety-relevant wheel sets; the press curve shows the deviations at a glance


Ford Motor Company, Belgium p

Making Old into New

With a press force of 6,200 t, the transfer press of a major press manufacturer was the largest press in the world when it was

fi rst commissioned in 1992. For body production at Ford’s site in Genk, Belgium, it is still the most impor-tant production unit for the processing of sheets with dimensions of up to 3,800 mm by 1,700 mm.

The conversion needed to ensure the spare parts supply and technical support for the drive system in the long term – fundamental requirements for con-tinuing high availability of the transfer press. Ford found these guarantees at Siemens as well as an adequate replacement for obsolete drive system. Ford contracted the outfi tter’s drive specialists for

With a water-cooled drive system and two powerful

asynchronous motors, Ford has secured the long-term

availability of the most important large press at the

company’s body manufacturing site in Genk, Belgium.

R e t r o f i t

Sheets with dimensions of 3800 mm by 1700 mm are processed on the enormous transfer press

On the main press of the body production line, Ford makes sides and doors for the Ford Mondeo, among other things

All

ph

oto

s: F

ord


infocontact


all the tasks from planning and confi guring to dis-assembly and assembly to commissioning, trial running, and operator training.

All requirements and requests were met in just three weeks, thanks to close collaboration between the customer and the supplier as well as exhaustive tests and preparations. The interface to the existing press control was simulated and the new Sinamics S120 drive system was replaced by a model. This made it possible to test the control, operation, and regula-tion prior to installation. Acceptance by Ford ensured that no later modifi cations needed to be made in commissioning.

Restricted installation spaceOne of the great challenges was the installation space on the control cabinet platform, which was restricted to a width of 4 m. The space previously occupied by one of the two converters alone was enough for the entire fi rst water-cooled version of the modular Sinamics S120 LC drive system. The standing space was therefore more than halved, and at the same time a higher degree of protection was achieved for the cabinets.

Under the management of the Press Group Head-quarters of Ford Cologne, a modular drive unit in the form of a Sinamics S120 Cabinet Module (CM) was implemented together with the experts from Siemens. The most important components of the new cabinet system are a Line Connection Module (LCM) with all the network-side components for connection to the plant-side 690 V network, an Active Interface Module (AIM), an Active Line Mod-ule (ALM) for the energy feeding and the generator feedback into the network, and two motor modules that feed the two 720 kW motors of the 1LA8 series.

All the power components are cooled directly with a low-maintenance fl uid cooling system. A separate recooling unit dissipates the heat losses from the closed water circuit to the factory water system.

State-of-the-art drive controlThe main task of the modular drive unit is the pre-cisely coordinated synchronization of one fl ywheel each at the inlet and outlet of the 40 m long transfer press over the motors, belts, and hydraulic clutch/brake units. The two fl ywheels are connected almost rigidly together by a longitudinal shaft and multiple disc clutches, and drive six press rams. The Simotion D425 motion control system implements the syn-chronized running of the two asynchronous motors and the load sharing to the fl ywheels in the form of a combined speed-torque control. The slip is detected by sensors and controlled in a highly dynamic man-ner by adapting the speed of the torque-controlled motor. In addition, the motion controller acts as a link to the previously used Simatic press control system.

The integration of various functions reduces hard-ware components and consequently interfaces while at the same time improving the performance and increasing the speed. Engineering time is shortened and systemwide communication simplifi ed, either via the Profi bus connection to the master process control or via the Drive-Cliq bus system that inter-connects all the drive components.

The new drive is rounded off by two Simatic Multi Panels MP277 with graphic visualization under Simatic WinCC fl exible, which supply the operator with additional process information. The clear dis-play of service data and the variety of information provided simplify maintenance and improve moni-toring quality.

Fast support response“The commissioning and optimization of the new drive system was faster and easier than all compara-ble previous projects,” says Patrick Verreth, who is responsible for equipment and service engineering. “That is mainly due to the many diagnostic possibili-ties of the Simotion Scout engineering system.” To keep the availability of its press high, the owner has signed a service contract with the supplier that ensures a maximum response time of two hours when assistance is needed. But the transfer press has run trouble-free so far. p

Only a modular drive unit of the Sinamics S120 LC series fi ts in the confi ned installation space


Audi AG, Germany p

More Productive with Servo-Transfers

The press shop of Audi AG in Ingolstadt, Ger-many, wanted to increase its yield to meet future demand by modernizing three 800 t

transfer presses (built in 1980) used for approxi-mately 80 body interior parts. For this purpose,

almost the entire electrical installation was renewed with state-of-the-art Siemens components, and the rigid, mechanical bar transfer was replaced with fl exibly programmable units moved by electronically connected single drives.

To minimize labor and costs, standard and safety-related communication were for the fi rst time imple-mented by a single programmable logic controller (PLC), thus reducing the number of bus systems used. Audi’s partners in the retrofi t project were FMI systems GmbH in Kassel, which specializes in press conversions and served as the general contractor,

and GPA-Jakob Pressenautomation GmbH, a provider of tailor-made press transfer systems in Karlsruhe.

High performance and fl exibilityThe heart of the solution is the electronic transfers developed by GPA-Jakob. They were equipped for the fi rst time with the drive-based Simotion D445 motion control system; adapted drives of the modu-lar Sinamics S120 series; and individually driven, electronically connected 1FK7 servomotors. Now the movements in all transfer axes can be freely pro-grammed by two electronically connected servomo-tors each, linked in any conceivable constellation and operated as desired. Whereas the cycle times used to be determined by the transfer, the distances and thus the cycle times can now be adapted to the respective tool or pressing exactly to the millimeter by decoupling the press and transfer movement.

With electronic transfers, the stroke rates can be increased from 14–16 to up to 20 cycles per minute, which means an increase of 30 percent on average. In order to have enough reserves for this, the current converters were replaced by devices of the Simoreg DC-Master (6RA70) series in the 130 kW press main drives. Like the Sinamics converters of the transfers, these are capable of feedback, which also has an effect on the energy budget in the long term. Provid-ing that suitable tools are used, the increased stroke rates enable the pressing of a wider range of parts, allowing Audi to plan production more fl exibly.

Integrated process and safety controlThe press shop owner is entering new territory in terms of safety technology. FMI systems imple-mented a fail-safe Simatic S7-400F PLC (CPU 416F) on an Audi press for the fi rst time. It controls and monitors both the “normal” process and the safety devices. A separate safety control is no longer

The replacement of mechanical part transfers by electronic, motion

controlled part transfers improves the yield of three presses of the

automobile manufacturer Audi by an average of 30 percent.

R e t r o f i t

Depending on the tool and component, the modernized presses supply 30 percent more body interior parts on average, for Audi’s entire model range


infocontact


required, which reduces the hardware and wiring expense. Matching up several controllers is now also superfl uous. Standard and safety-oriented communi-cation on just one Profi bus cable and the Profi safe profi le are a proven, economical, and fl exible alter-native to the previous fi xed wiring, also on presses.

Prefabricated, certifi ed press safety components for Simatic PLCs support and speed up the programming of the safety program. The integrated safety func-tions of the Sinamics S120 drive system, with which effective protection for persons and machines can be implemented very easily and effi ciently without additional hardware, were also used at Audi.

Easy operation and engineeringThe part transfers can be set up by portable Simatic Mobile Panel MP177s on every press and are linked by pluggable Profi bus connections. The setup techni-cian can therefore go directly to the scene of the action and have a complete overview when he or she operates the transfer at reduced speed in jog mode. Every press also has a stationary Simatic Multi Panel MP377 with a graphical user interface under Simatic WinCC fl exible for intervention in the event

of faults, among other things. Each of the networked presses has its own Simatic programming unit in the control room. This ensures that the right software versions, projects, and circuit diagrams in PDF for-mat are always immediately available when switch-ing on.

Siemens supported the retrofi t specialists from FMI systems and GPA-Jakob in their introduction to the new technologies of Safety Integrated and Simotion, allowing the three presses to be converted and put into operation sequentially in just six weeks each. They have been running without faults and with a higher yield ever since. “The collaboration of all the people involved worked perfectly. Everyone demon-strated the fl exibility and motivation essential for such a project,” says Franz Weber, head of central machine technology in the Press Shop division at Audi Ingolstadt. p

The intelligence of the Simotion D445 motion controller integrated into the Sinamics S120 drive system ensures a highly dynamic response and smooth, harmonious movements

Electronic transfer

Main operator panel Cellar

Loader

Discharge belt

Cellar Ram

Head unit

Head unit

Press control Main drive

SinumerikEncoderwidthadjustment

SinumerikEncoderlengthadjustment

SinumerikEncoderheightadjustment

SinumerikEncodercenteradjustment

SinumerikEncoderadjustmentdoublesheet control

SimaticDP-DPCoupler

SinumerikEncoder on cam switchgear

SinumerikEncoderadjustment

SimaticMobile Panel

SimaticMulti PanelMP377-15"

Sinamics S120

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimaticET 200M

SimoregDC-Master

SimaticS7-416F + CP

SitransDiagnosisrepeater

SitransDiagnosisrepeater

SimaticS7-315-2 DP

Industrial Ethernet

Profibus/PROFIsafe


Lasco Umformtechnik GmbH, Germany p

Retrofi tted for the Future

The machine tool plant Lasco Umformtechnik GmbH in Coburg, Germany, modernizes the electrical, control, and drive technology of

its own forming and other machines as well as machines of other manufacturers worldwide. The control, drive, and visualization systems from

Siemens are constants here – because the reliability and functionality are right, but also because the components are quickly available worldwide. Martin Metallverarbeitung GmbH, an automobile industry supplier in Ebersdorf, Germany, also counted on

Lasco as a fl exible and competent partner for the modernization of several mechanical punch presses. With the support of Siemens, an individually adapted concept was developed and implemented in a maxi-mum of three weeks for each press.

Components matched to each otherA fail-safe SPS Simatic S7-300F performs both the safety-oriented and the standard control tasks. Compact drive technology from the Sinamics S120 modular family is used in conjunction with a 1PH7 asynchronous servomotor for the main press drive and a 1FT7 servomotor for the roller feed.

A Simatic Multi Panel MP277 and a Touch Panel TP177 are used for setting up, operating, and moni-toring the press and straightening machine. All components are tailored to each other. Safety-rele-vant and standard communication between the controller, drives, and decentralized Simatic ET 200S periphery occur over the same Profi bus lines and Profi safe profi le.

With the new automation solution, the presses can be run in two operating modes. In addition to the roller feed, the new main drive for the stroke adjust-ment can also be moved precisely in positioning mode during setup, allowing the press ram to be more easily brought into any desired position. The newly added “safely reduced speed” safety function also takes effect. In speed-controlled automatic mode, the “safe stop” function provides for con-trolled switch-off. The main drive can also be oper-ated with a variable speed profi le so that the kinetic energy fed into the fl ywheel can be easily and effi -ciently increased via the speed. In this way, more energy can be introduced in the forming phase in a targeted manner, allowing larger parts to be manu-factured. Conversely, it is possible to reduce the ram speed outside the forming phase in the profile, adjusting it to the cycle times of the transfer equip-ment in use. This allows the operator to get the most from the pressing process.

The retrofi t makes setup, operation, and monitoring of the presses much easier. Supported by a graphical user interface developed by Lasco under Simatic WinCC fl exible, new tools can now be easily set up and optimized, and the setting parameters can be saved and read back in at any time. p

Using individually tailored automation

packages, a renowned German press

manufacturer makes older machines

ready for the future – at a fraction of

the cost of new investment.

R e t r o f i t

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With the newest control and drive technology, Lasco has made the punch presses at Martin more effi cient and ready for the future

Lasc

o


Automatic Feed Co. of Napoleon, Ohio, engineers and refurbishes handling equip-ment that uncoils the steel and converts it

to stacks of defect-free blanks. It supplies automo-bile plants on nearly every continent. When Auto-matic Feed retrofi tted the controls of a plant line in Russia, it used Siemens’ services. The result was a solution its customer can rely on. The blanks line includes seven components that must work together in precision. Tim Barry, senior engineer at Automatic Feed, says, “Siemens helped us engineer a drive solution without any major problems. We had almost zero failures and were able to meet our original ship date.”

“SMART” Engineering For the automation of the line Siemens’ Totally Integrated Automation (TIA) was used. Automatic Feed uses modular technology through its Standard-ization and Modularization Action Resource Team (SMART). This includes a Distributed Device Architec-ture (DDA) rather than centralized control. This speeds communication and reduces cabling costs and points of failure. The Automatic Feed team also leveraged the Simotion D motion controller, which integrates control capabilities directly into the drives to yield a compact, highly scalable system. The

processing power and memory in the Sinamics S120 drives provided the performance necessary to sup-port the distributed architecture. Drive-Cliq technol-ogy offered further benefits for the engineering team and customer alike. An Ethernet-like backplane based on a 100 Mb/s serial interface, Drive-Cliq automatically validates components and captures nameplate data, simplifying integration and replace-ment.

More for the money The Siemens solutions reduced space requirements in the enclosures by as much as 25 percent. That is a signifi cant benefi t in the factory environment, where space is always in short supply. Another benefi t was the ability to switch languages on displays “Other projects had signifi cant cost associated with convert-ing screens,” says Barry. “With the multi-language support built into the Siemens HMI, we can create a Russian database to mirror our English database, and switch between the two languages with the touch of a button.” Automatic Feed has become a believer in Siemens. Says Barry, “We established a strong level of comfort with Siemens very early on in the project. We are using their solutions more, especially off-shore.” As to the retrofi t, they could not be happier with the results. “The major benefi t is that it is more of an open architecture, which makes it easier for us and the end-user to maintain and troubleshoot,” says Barry. p

Modular, distributed design combined with an

easy-to-engineer motion solution and global

support yields reliable, high-performance

retrofi t of steel-handling equipment.

R e t r o f i t

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The design in steel handling line leverages Simotion machine controllers and Sinamics drives for a distributed control architecture

that minimizes wiring

Automatic Feed Company, USA p

A “Smart” Choice

JLK

Ph

oto

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Complete package for servo-presses p

Productive and Flexible Presses

An integrated, individually applicable package solution for servo-

presses brings together precise mechatronics design, intelligent

motion control, powerful torque motors, and effi cient energy

management.

M e c h a t r o n i c s

Servo-presses combine the high productivity of conventional presses with

the fl exibility of hydraulic aggregates

W. G

eyer


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Decreasing lot sizes, an increasing number of different products, and the need to manu-facture these products cost-effectively are

the great challenge in forming technology. An ideal solution is provided by servomotor-driven mechani-cal presses, which combine the productivity of conventional presses with the fl exibility of hydraulic presses. What is required is that all the components of the drive train be carefully tailored to the mechan-ics and kinematics of the respective press design.

A universally applicable solution for servo-presses from Siemens makes this possible. The consistent hardware basis is formed by the Simotion motion control system, the Sinamics S120 modular drive family, and 1FW3 complete torque motors. The PC-based Simotion variants or robust operator pan-els and industrial PCs from the Simatic line provide visualization and order management.

Optimized processing conditionsUpon request, Siemens provides support to the machine manufacturer in designing the drive sys-tems of its presses. Using an algorithm integrated in Simotion, the user can calculate the optimal move-ment sequences of the press ram, creating tailored processing conditions for every die and formed part.

The Siemens Mechatronic Support service depart-ment fi rst analyzed the mechatronics and kinematics of presses as well as the pressing process in regard to mechatronics. A team of specialists from a wide variety of fi elds converted the results into a mathe-matical model and from it generated a simulation tool for press design. This allows the entire drive train consisting of converter, servomotor, and gears to be safely dimensioned – that is, to be precisely tailored to the mechanics of the press and the speci-fi cations of the machine manufacturer.

The OACAMGEN (curve generator) software module for Simotion is an enhancement to the simulation tool. It allows individual, energy-optimized ram operation profi les to be calculated for any Simotion-controlled servo-presses and dies. OACAMGEN is a component of the SimoPress Servo application package for the overall control of a servo-press. SimoPress Servo also has an input screen that allows the motion control of the servo-press to be visual-ized under WinCC fl exible.

From the key data of the forming process entered, Simotion calculates in seconds the energy-optimal ram kinematics for the die in use. The result is an operation profi le with transitions that are smooth fl owing and gentle to the die and material and that avoid excessive power and torque peaks. This reduces the drive power that needs to be installed. The machine-specifi c maximum values defi ned during the drive design (e.g., motor speed and

acceleration, ram speed and acceleration, optimal forming speed) are taken into account in the curve calculation. This allows the permissible limits of the press and drive train to be maxed out but not exceeded. The fi eld-weakening range of the torque motors is used systematically in the process. They can run at up to twice their rated speed at constant power.

If specifi c waypoints or switching points are not known, they can be moved using the electronic handwheel and applied in the calculation. This allows production presses to be used in test mode in order to set up a new die. Optimized operation curves can be saved to the system and read back in if needed. Thanks to the energy-optimized motion control, the number of strokes per minute at the same or reduced forming speed can be greatly increased with forming quality that is at least con-stant, but that in many cases is even better.

Banks of capacitors as energy storesFor servo-presses of the medium power class, banks of capacitors are advantageous as energy stores. They allow energy that is collected during braking to be relatively easily and cost-effectively stored in the intermediate circuit and released during forming or acceleration.

The capacitor banks consist of six modules with a capacity of 132 mF each – that is, almost 800 mF per cabinet. Users can couple up to three of these capacitor cabinets together and greatly increase the storage capacity of the intermediate circuit.

This energy management system reduces the load on the power supply. The connection power can thus be dimensioned and planned to be signifi cantly lower from the outset. Where the energy require-ment is higher, the user can still use a traditional fl ywheel as a kinetic energy store.

For the safety of personnel and machines, Siemens has a variety of proven solutions in its product line – from drive-integrated safety functions in the Sinamics converters (such as safe torque-off) to power-scalable, fail-safe Simatic S7 300F con-trollers. p

Just a few entries instead of protracted engineering: the standard input screen of Simotion SimoPress Servo under WinCC fl exible

Siem

ens

AG

1FW3 torque motors – well-proven, strong and with increasedvibration resistance – guarantee optimum performance at any time.

Answers for industry.

How do you improve your stroke in the press shop?

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