Thread checking

[Wraith]

Does anyone have a very reliable way for checking that holes have been fully threaded and to a proper depth.
This application would require a very short cycle time to check the hole. The holes to be checked are M6.
Could this be done with the use of an air check probe and sensing for depth with a linear traveled distance range? Proxy to proxy?


Thanks

 

[bob1371]

http://www.kamansensors.com/html/products/appnotes/threaddetectinduct.htm

http://www.zetec.com/documents/thread_insp.pdf

http://www.geninsp.com/WebPages/NCTP Press Release 10-28.html

Just a few to look at. This is done alot with camera's also.

a quick google for "thread detection" will provide numerous results.

Bob

 

[AJone]

http://personalpages.tds.net/~leitechmike/igp.htm

http://www.auto-met.com/fowler/digi-thread.html

Here are some more time consuming methods