O-Ring Groove Measurement Method in CNC Machined Parts

chandaraasekar

Starting to get Involved
#1
We are using CNC lathe for machining a internal O-Ring groove. Can any one help me proposing inspection method other than digital groove caliper prior to removing the part from lathe. Size 3mmX42mm.
 
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#2
Would it be possible to use a probe head combined with a disc stylus in your machine? That would solve the problem, but may be a bit expensive unless you already have a probe head for it.
 

Eredhel

Quality Manager
#3
At the machine we use Bryant Gages a lot, ID bore gages, and ID mics. On the cheap we'll occasionally use telescoping gauges & ID calipers with a mic when we can't get a size and have to check it now. You can get ID bore gages custom made for larger IDs.
 
J

Jake in WI

#4
Several manufacturers come to mind. Try Dyer, Dorsey, Mueller, Starrett; look for I.D groove gages and you will find various configurations. There is also a device usually named "Indicating groove caliper"; some of these have contact points that can vary the range.
 

Michael_M

Trusted Information Resource
#5
Depending on the tolerances of the groove; if you would normally be able to measure with digital calipers, can you use something like: Groove Masters

I pulled the image from MSC, depending on where you live, you would have to order from someone else but....
 
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