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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