Coloq Btp Ppt

8/8/2019 Coloq Btp Ppt

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PART II( BTP Presentation+ Patent)

Kamble Satwatsing Gopal2007ME20607

MEC 420


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SUPERVISOR: DR. SUNIL JHA

EXAMINER: PROF. S.K.SAHA

Design and Development ofSMT Pick and Place Machine

Harshit Chaudary (2006ME20567)

Himanshu Goyal (2006ME20569)


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Objective

y Development and Design of the components of Pick

and Place machine which consists of: -

Linear Actuators

Vacuum Pump and its Assembly

Nozzle and its holding arrangement

PCB fixture frame for loading components


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WorkDone

y Methodology

Conceptualisation

Design

Procurement

Manufacturing


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Conceptualisation

y Understanding of Machine, Components and

working method

4 Linear slides

3 Stepper motors

Nozzle used to pick and place components by creating

vacuum

Printed Circuit Board (PCB) where components are placed


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Industrial Visits

y Aggressive Electronics Pvt. Ltd.

Machines too advanced

Turret nozzle was being used

y Bergen Group

Worked on a lpkf protoplace machine

Their holding design for PCB proved to be useful

y Electronics Next India Pragati Maidan


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Procurement

y Linear Actuators

Made a comparative chart and ordered actuators from Parker

Automation Ltd.

y Vacuum Pump

Ultimate Pressure 150 microns = 20 N per sq.m.

PA = Mg ; M = 4 mg, A = 2mm x 1.25mm

Required pressure = 117.6 microns = 15.68 N per sq.m.


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Manufacturing

y PCB (Printed Circuit Board )holding arrangement

Contains aluminium channels, L-angles and thick acrylic strips

Max. size of PCB = 310 mm X 520 mm (including tolerance)

y Mounting arrangement of actuators on table

Two T-sections beams were fixed to form a I-sectionbase

y Nozzle holding arrangement Made up ofL-angle aluminium

Modular design so different types of nozzle can be used


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PCB Holding Arrangement


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Modified

Outlet

Of

Vacuum

Pump


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Nozzle Holder


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Vacuum Pump Assembly


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Mounting of actuators through two T-section Beams


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Assembly of Actuators


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Mounting of VXi drive and RBC box upon tables legs


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Conclusions

y Designed and manufactured locking design for the

PCB and Nozzle holder

y Procured and assembled linear actuators and

Vacuum Pump assembly

y Future Challenges

Mounting arrangement for feeders


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Observations

y More focus on plagiarism than innovation (in thename of inspiration from different companies!!)

y Calculation mistake (Area of nozzle should have

been considered)y Incomplete

-work remaining in the assembly is the absence ofconnecting wires from RBC to actuators.

-Wires were sent late by the company, and when theywere sent, they were wrong hence resulting in delay

y Good efforts


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I N V E N T O R S :

N A K A M U R A , M A S A O ( F U K U O K A , J P )

Spot welding method, spot welding

machine and spot welding robot


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Claims

y 1.A spot welding method for welding superposed works which are clamped andpressed between a stationary electrode and a movable electrode and are fed an electricpower between the electrodes,

Comprising steps:1. prior to an actual welding operation, measuring a position of the movable electrodewhen reference works are clamped by the electrodes,

2.storing the measured value as a reference value;

3.measuring an actual position of the movable electrode at the time when the worksare clamped by the electrodes, at the time of executing the actual welding operationand before feeding the electric power between the electrodes;

4. comparing the actual position and the reference value to thereby feed the electric

power between the electrode so as to execute the welding operation,

when the position is within a predetermined range with respect to the referencevalue, and to thereby issue a warning and not to feed the electric power between theelectrodes so as to interrupt the welding operation, when the position is not within thepredetermined range.


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y 2.A spot welding apparatus for welding superposed works which areclamped and pressed by a stationary electrode and a movable electrode andare fed an electric power between the electrodes,

y the welding apparatus comprising: a storing unit measuring a position ofthe movable electrode when the reference works are clamped by theelectrodes and storing the measured value as a reference value, prior to an

the actual welding operation;y a measuring unit measuring an actual position of the movable electrode at

the time when the works is clamped by the electrodes, at the time ofexecuting the actual welding operation and before feeding the electricpower between the electrodes;

y and a comparing unit which compares the actual position and the referencevalue to thereby feed the electric power so as to execute the weldingoperation, when the position is within a predetermined range with respectto the reference value, and to thereby issue a warning and not to feed theelectric power between the electrodes so as to interrupt the weldingoperation, when the position is not within the predetermined range.


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y 3. A spot welding robot characterized in that the spotwelding apparatus as set forth in claim 2 is attachedto a leading end of an arm thereof.


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THANK YOU

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