Machine Vision and Part Forming

InvotecCase Study, Controls Engineering, Machine Vision Systems, Mechanical Assembly Systems

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Overview

Design and Build a system to automatically inspect and correct specified dimensional criteria on a precise metal component used in a medical device. Automatically bend to form and modify the component until it is verified to be in compliance with the dimensional specifications.

Problems We Solve 

Our customer was in need of a method to dynamically inspect and correct specified dimensional criteria on a precise metal component used in a medical device. Ideally this process would be able to automatically bend to form and modify the component until it was verified to be in compliance with the dimensional specifications.

Tools We Use

The inspection system measured the profile of a ‘clip’ at two stations to capture dimensional data in dual planes. The vision system in the first station monitored the X-axis dimensional information as a custom designed, servo controlled tooling modified the clip in small increments, repeating the process until the clip was within established specifications. The clip was then transferred to the second station where an additional vision inspection system monitored the Y-axis dimensional information as a second set of custom designed, servo controlled tooling modified the clip in small increments, repeating the process until the vision system verified the clip was within the critical tolerance before it was transferred to the manual load/unload position.

The inspection system included a Cognex Checkpoint III vision system with dual, high resolution cameras and customized lighting to enhance contrast. This was integrated with a four axis servo positioning system. The machine guarding included a safety light curtain and safety circuit and pneumatic motions which were operated with directional control valves.

Solutions We Provide

The automated vision system, integrated with component forming technology allowed the repeatability of the process to meet rigid part tolerances with 100% reliability. The new system drastically improved the process yields and productivity for our customer.

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