Virtual Optical Comparator

Thompson, Greg

Kansas City Plant (KCP), Kansas City, MO

关键词: Cameras;    Computer-Aided Manufacturing;    Optical Systems;    Machine Parts;    42 Engineering;   

DOI  :  10.2172/952474
RP-ID  :  KCP-613-8517
RP-ID  :  DE-AC04-01AL66850
RP-ID  :  952474

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Virtual Optical Comparator, VOC, was conceived as a result of the limitations of conventional optical comparators and vision systems. Piece part designs for mechanisms have started to include precision features on the face of parts that must be viewed using a reflected image rather than a profile shadow. The VOC concept uses a computer generated overlay and a digital camera to measure features on a video screen. The advantage of this system is superior edge detection compared to traditional systems. No vinyl charts are procured or inspected. The part size and expensive fixtures are no longer a concern because of the range of the X-Y table of the Virtual Optical Comparator. Product redesigns require only changes to the CAD image overlays; new vinyl charts are not required. The inspection process is more ergonomic by allowing the operator to view the part sitting at a desk rather than standing over a 30 inch screen. The procurement cost for the VOC will be less than a traditional comparator with a much smaller footprint with less maintenance and energy requirements.