Automating Circuit Board Assembly

Details

Components:

Actuators, ML

Retrofit or OEM:

OEM

Industries:

Electronics
Factory Automation
Semiconductor

Problem:

Assembling printed circuit boards requires repeatable performance and extremely subtle precision is usually too expensive for educational and small business markets. 

Solution:

The ML series of linear acutator is equipped with state-of-the-art components for accurate linear positioning; such as a ‘dove-tail’ style carriage comprising 14 plain bearing surfaces for high rigidity and smooth travel, all at a price that is affordable.

Over the course of a year, Professor Silverman incorporated product assistance from PBC Linear application engineers to come up with a working solution. Three PBC Linear ML series mini-actuators were assembled in a 12 x 14 inch XYZ system, and utilized to automate the surface mount assembly process. Two ML actuators would accurately determine the XY position while the third moved a vacuum needle, or part-grabber, up and down.

A server was also added to allow rotation of the part. In addition, the gripper assembly was outfitted with a small camera to locate loose parts and give feedback to the user utilizing software designed by Ken Silverman. The camera compares images of assembled circuit boards to identify where all the pieces need to go and signals the gripper to re-align if adjustment is necessary. The system can also be switched over to manual control for special assembly projects.

Circuit Board Assembly Figure 1

Testimonial

Overall, Professor Silverman was very pleased with the low cost PBC Linear ML solution and its ability to perform the required tasks at hand.

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