Cognex Blogs

Vision sensor measurement tools in action


In-Sight 视觉系统


Machine Vision

Manufacturers can speed production, minimize defects and reduce costs with machine vision technologies

Bob Tremblay, 07-23-2013

One of the principal differentiators that Checker vision sensors have over photoelectric sensors and even other vision sensors is their ability to determine dimensions of parts and deliver simple pass/fail results. This is really important in the inspection example I give here – verifying component thickness after the machining of an automotive part component.

In this example an automotive part component comes down a belt, is machined on the production line, and moves to the inspection station.  The part can be in any position on the belt because Checker is always looking for the part so there is no need for the part to be fixtured precisely.  This means that you don’t have to adjust the sensor constantly (like you do with photoelectric sensors). Once the part is found, the width, height and diameter measurement tools quickly measure the part and produce a pass/fail result.

                          Correct thickness                                             Incorrect thickness


In this example, Checker is performing part inspections that human eyes and photoelectric sensors simply cannot.  The result for the user is 100% defect detection, more quality control, and lower production costs.