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Selecting the Optimal Vision Equipment to Meet Automation Needs

Solving a machine vision application, whether it involves quality inspection, part verification or any number of additional tasks, requires taking several factors into consideration. The most important part of this process is analyzing the target object and its inspection environment, and then specifying the tolerance between “good” parts and “bad” parts. From this information, one can choose the optimal lighting, vision sensor and lens for the application at hand.

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Machine Vision Advances Benefit Motion Applications

Machine vision systems are playing an increasingly important role in many industrial applications, whether it is counting parts on an assembly line or examining surfaces for defects. Improvements in computing power, optics, connectivity, and software are allowing vision systems to be deployed in a wider range of applications.

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Vision Advances Improve Optical Inspection

Recent advances in motion control and machine vision technologies present tremendous opportunities for Automated Optical Inspection (AOI) systems. Thanks to recent developments in these fundamental building block technologies, today’s AOI systems can carry out inspections with a higher resolution and accuracy, and with much faster throughput than before.

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Cognex Machine Vision System Helps Meister Reduce Part Defects

The Meister Group, a Belgian industrial group supplying the automobile market, successfully deployed Cognex’s machine vision system to help its robotic assembly cell sort out defective parts. The result has been a significant decline in part defect rates and a six-month payback on investment.

Posted in: Applications, Application Briefs

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IDS Camera Automates Inspection

Until now, machine-based surface inspection methods have checked visual quality by means of direct or transmitted light in conjunction with a camera system. When it comes to the automated inspection of reflective and smooth surfaces, however, these methods involve problems. The resulting reflections need to be either eliminated or included in the measuring process. Consequently, complex lighting conditions using polarized light or fringed projection in a darkroom are required, or the objects need to be positioned with high precision and completely shock-free. Whichever solution is employed, neither permits an automated 100% in-process inspection.

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Linear Positioning Stage

The Slipstream Series from LM76 (East Longmeadow, MA) 1 linear stage features 0.2mm/300mm accuracy and 0.1mm repeatability. Available in travel lengths to 6 meters, the precision stage has T-Slots on three sides for installation and/or accessories. The linear stage is ideal for robotics, pick-and-place, assembly, packaging, sampling, testing and other precision positioning applications.

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Piezo Motor

The P-653 piezo motor from Physik Instrumente (Auburn, MA) is smaller than other miniature linear stages and provides higher velocity and resolution. The linear motor system comprises only four parts and provides speeds of up to 200 mm/sec (8in./sec).

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