Automated internal thread gaging
Automated internal thread gaging
(OP)
I have recently quoted a high production job for the automotive industry. One of the part features is an internal M10 x 1.5 thread that requires 100% inspection of Major, minor, and pitch diameters, as well as lead error. The gage must also be capable of outputting the dimensions electronically. Does anyone know of a gage that can check all these characteristics, and, hopefully be adaptable to automated checking. We will be running these parts on a twin spindle turn/mill center with gantry part loading and unloading. We can program the gantry to stop and place the piece on a fixture, or drop the piece on a shuttle to be carried to the gage if necessary. Upon completion of the inspection the gantry would pick up the piece and carry it to the conveyor.
Thank you for any and all responses to this thread.
Thank you for any and all responses to this thread.





RE: Automated internal thread gaging
Is it possible for the design to change to a stud so that you could have external threads to work with? I shudder to think at what happens if the internal threads are wrong. Especially if it is a key feature to the part (sounds like it is given the 100% inspection requirement). Would the whole thing get scrapped or would it be reworkable?
Good luck, hopefully others will have better ideas.
RE: Automated internal thread gaging
I am going to look more closely at Johnson Gage, as it seems to have at least most of what we require, and looks like it may be relatively quick to check the part if properly fixtured. From the pics on their website, it looks as though it is fitted with dial indicators. If it can be fitted with digital indicators, and output to spc, it may satisfy our customers requirements.
Thank you for your response, and if anyone else has any ideas I would appreciate hearing from you.
RE: Automated internal thread gaging
RE: Automated internal thread gaging
No, I don't think it is a stupid thing. It's something I hadn't thought of. I will have to give it some though to see if it is feasible to inspect the tool. It may be diificult, as the cutting tool is either a carbide tap, or forming tap (haven't decided yet).
Thanks for your input. I have to study that one a while.
RE: Automated internal thread gaging
I don't think it is a thing to say. It is certainly something I hadn't thought of. I will have to do a little studying to see if it is feasible to check the tool. It may be difficult as the cutting tool is either a carbide tap, or forming tap, (haven't decided yet) and not a lot of available time within the manufacturing cycle.
Thanks for your input.
RE: Automated internal thread gaging
RE: Automated internal thread gaging
http://www.ndttechinc.com/20_ghp2x.htm
They use a probe that measures the eddy currents to measure the threads. We have several of them in house.
RE: Automated internal thread gaging
RE: Automated internal thread gaging