DISKUS Double-Face-Grinding-Machines

Series:

DDS 457 XRDDS 600 XR

DDS 750 XR

DDS 457 • 600 • 750 XR

Three grinding methods meeting different production problems:

1. Through-feed grinding

For large mass-production >2000 parts per hour and accuracy requirements of 0,002 to 0,020 mm

for workpiece dimensions withMachine size: DDS 457 XR DDS 600 XR DDS 750 XRGrinding size: 1,0 to 20 mm 2,0 to 20 mm 5,0 to 30 mmGrinding area: 8,0 to 80 mm 30 to 120 mm 30 to 180 mm

3. Plunge-cut grinding with controlled rotation of the workpieces

For medium size production and small batches, high stock removal and high accuracies

for workpiece dimensions withMachine size: DDS 457 XR DDS 600 XR DDS 750 XRGrinding size: 2,0 to 80 mm 2,0 to 80 mm 5,0 to 80 mmGrinding area circle: max. 205 mm max. 250 mm max. 300 mm

2. Through-feed plunge-cut grinding

For medium size production of about 600 to 2000 parts per hourand accuracy requirement of <0,005 mm

for workpiece dimensions withMachine size: DDS 457 XR DDS 600 XR DDS 750 XRGrinding size: 1,0 to 20 mm 2,0 to 20 mm 5,0 to 30 mmGrinding area: 8,0 to 80 mm 30 to 120 mm 30 to 180 mm

CBN- and Diamond-Wheels Grinding rings together with back up plates

DKS-Grinding segments

All grinding methods working with grinding wheels, rings, segments of conventional grits or CBN- or Diamond-wheels:

Workpiece handling with 6-axis-robot

Rotating buffer for ground parts

... vibration transport ... stack feeder system

DDS 600 XR DDS 600 XR DDS 750 XR

Two machines DDS 600 XR for pregrinding of stamps and finish grinding of thesegear parts after hardening, and one machine DDS 750 XR for flexible productionof conrods.

Different handling systems depending on workpiece shape and size, and on production requirements, can be added! The machinetype DDS ... XR is an ideal design for automatic loading/unloading. Our Engineering-Team can advice on the connection of themachines to existing production lines.

The machines DDS ... XR with vertical grinding spindles are specially designedfor the grinding of thin flat workpieces on both parallel sides without clamping.Work pieces of a greater grinding area and high stock amounts can be ground inone step to tight tolerances of thickness, parallellity, flatness and surface rough-ness.

• Circumferential speed of grin-ding wheels, max. 63 m/s

• Coolant supply through spindle center

• Grinding spindle bearings pre-loaded, lifetime grease lubrication,air pressure seal

Controls

• SIEMENS 840 D

• Siemens Safety Integrated

• Easy changeover of control para-meters to meet the production requirements

• Monitor display by Siemens Easy Mask

• Workpiece data storage by Siemens Easy Trans (option)

• Different languages stored

• Siemens SPS - S7

DISKUS Measuring Device IONIC(detailed leaflet available)

• Special design of DISKUS for highest accuracies and produc-tion rates

• Measuring increments 0,00025 mmavailable (option)

• Measuring probes in direct contact with the workpieces

• Electronic Zero-shifting (option)

• Holder for measuring probes of low thermal variation

• Additional monitors can be connected for remote control (option)

• Interface for parallel and serial connection

DDS 457 • 600 • 750 XR

Details of the machines:

Machine Base

• Welded construction

• Tilting points in grinding plane

Workpiece Transport:

• Infinitely variable infeeds

• Short change over

• Easy connection of loading/un-loading devices

• The three grinding methods are available in one machine (option)

Grinding Spindles

• Two motorspindles of 23 or

48 KW

• Motorspindles temperature sta-bilised

• Infinitely variable rotational speeds to adjust grinding wheel speed in relation to workpiece conditions

Machine concept

The machines are built in 3 sizes inrelation to grinding wheel diametersas DDS 457 XR, DDS 600 XR undDDS 750 XR.

• Machine base FEM-designed

• High axial and bending rigidity

• 2 vertical grinding motorspindles

• Infinitely variable grinding speeds (up to 63 m/s)

• Infinitely variable infeed of the grinding wheels

• Preloaded slide rails for the grind- ing motor spindles

• Electronic sound control for wheel contact

• 3 free accessible tilting points

• Infinitely variable speeds and feeds of the dresser unit

• Reconditioning systems for the different grinding wheel materials

• Built for easy maintenance

• Fully enclosed working area

DISKUS-Know How for different production fields

The workpieces shown can be ground on DDS-machineswith the different grinding methods in relation to productionrequirements.

Picture 2: Flat parts for gear boxes, hydraulic and pneumaticvalves, textile machinery, piston rings.

Picture 3: Parts of the production of injection pumps andhydraulic pumps.

Picture 4: Workpieces of ceramics, carbon alloys, tungstencarbides, brass and other, used for the precision engineering,watchmaking and electronic systems.

Additional: To the machines are available the necessaryperiphery systems such as: Measuring devices, coolant supplyand filter systems, workpiece loading/unloading, grindingtools and the service for the whole field of DISKUS-Double-Face-Grinding.

Picture 1: Samples of the motor industry and roller bearingproduction.

Measuring with Ionic IONIC 17A/4 control and display IONIC monitor

DDS 457 • 600 • 750 XR

DISKUS developed the measuring system IONIC for the quality assurance purposes of Double-Face-Grinding.This gives your production unmistakeable readout, clear records - ”Controlled Quality“!

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DISKUS WERKE Schleiftechnik GmbHRobert-Bosch-Str. 11 • D-63128 Dietzenbach-Steinberg

Phone: ++49 (0) 60 74 / 4 84 02 - 0Fax: ++49 (0) 60 74 / 4 84 02 - 36

E-mail: Diskus_Werke_Vertrieb@t-online.deInternet: diskus-werke.de and diskus-werke.com

Technical Data

DDS 457 XR DDS 600 XR DDS 750 XRThrough-feed Through-feed/ Plunge-cut Through-feed Through-feed/ Plunge-cut Through-feed Through-feed/ Plunge-cutgrinding plunge-cut grinding grinding plunge-cut grinding grinding plunge-cut grinding

grinding grinding grinding

Grinding size mm 1,0 - 20 1,0 - 20 2,0 - 80 2,0 - 20 2,0 - 20 2,0 - 80 5,0 - 30 5,0 - 30 5,0 - 80

Grinding area mm 8,0 - 80 8,0 - 80 max. 205 30 - 120 30 - 120 max. 250 30 - 180 30 - 180 max. 300

Grinding wheel Ø mm 457 600 750

Grinding wheel dimensions DDS R mm 457 x 75 x 76.2 600 x 75 x 150 750 x 75 x 250

DDS L mm — 600 x 75 x 20 —

Drive capacity per grinding spindle kW 23 48 48

Workpiece feed speed mm/s 20 - 240 20 - 240 20 - 240

Cutting speed, max. m/s 63 63 63

Net weight of machine kg 7.000 11.000 12.000

Total gross weight kg 9.000 13.000 14.000

(seafreight)

Machine space required approx. L mm 4.700 4.900 4.900

B mm 4.200 5.000 5.000

H mm 3.000 3.000 3.000

Layout of DDS

(Change of data due to technical improvements reserved)