Development of control system to automate the PCB pin insertion process

This thesis describes the development of the control system that runs the automated pin insertion machine in a surface mount technology assembly line. The control system is divided into 2 subsystems viz. pin sorting and pin insertion. The detailed design of the control system and its components is discussed, along with the programming of the Programmable Logic Controller for both subsystems. The development of the machine vision application used to sort the right pin types is described, with an emphasis on the image processing tools used. Applicability and robustness of these tools in the context of the pin insertion machine is described. The developed application can capture images and process them in 92 ms, significantly lower than the maximum allowable time of 500 ms. The vision system could totally eliminate the incidence of a wrong pin being passed on to the insertion head. Among the right pins, 98% of the right pins in the right orientation and 100% the pins in the wrong orientation were detected.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Mechanical Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2012

Author dc:creator

• Isaac, Rejin

Advisor dc:contributor.advisor

• David E. Hardt.

• Mechanical Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/78164

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/78164