Thread Checker

To All:
    Here's what seems to be a neat device shown in Production Machining magazine.
====================================================http://tinyurl.com/ygau27z
Hand-Held Thread Verification Unit Posted on: 11/4/2009
    New Vista Corporation has developed a hand-held thread verification unit for the rapid inspection of internal or external threads in production parts. The TVU-HH powers a thread gage into and out of (or onto and off of) the part. The unit reverses automatically when the correct thread depth is reached. “Go” gaging, “no go” gaging, and combination gaging are all possible. Three models will inspect thread sizes M3 to M50.
The unit is designed for applications where there can be a variety of part types and thread sizes. Threads are checked successively using a variable speed motor, which is powered by a battery pack; most all thread inspections take no more than 3 seconds. Gage changes are accomplished by using a quick-change toolholder. ====================================================    You'd probably have to check a LOT of threads to make this puppy pay for itself. But it might come in handy for those aerospace jobs that require a 100% inspection of EVERY part.
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I wonder how it will compare with normal gauges at the customer-end of things. :-o
Later,
Charlie
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Charlie Gary wrote:

Charlie:
    Here's a video from their Web-site.
http://www.newvistacorp.com/tvu-hh.html
    But you know, I'm not sure now if they are using pitch diameter thread gages, or are just checking the thread depth.     I imagine you could put any type of thread gage in their holders you want. The device would have to have some sort of slip clutch so you don't "squeal" your thread gage in a tight hole and jam it.
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BottleBob wrote:

Charlie:
    OK, here's a little more info from one of their different models (not the hand held one). I suppose you'd have to call them to make sure the handheld one has the same features.
==========================================================http://www.newvistacorp.com/tvu_1.htm
    Quickly and automatically checks threaded holes (or external threads) by powering a probe (or ring gage) into and out of the part. GO gaging, NO GO gaging, and combination gaging are all possible.
    Sensitive high speed drive allows the GO probe to stop in case of missing or improperly formed threads. This registers a fault, creating a "reject" signal.
    Will check blind holes accurately for thread depth.
    Will not jam or stick in undersize (reject) threads. In automated applications, rejects can be separated out without stopping the process.
    Does not subject the part (or the TVU) to high force or torque levels.even with a reject. ==========================================================    Checking 0-80, 2-56, or 4-40 holes with the hand held unit seems like it might be a little "ify". LOL
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