Phil,
Who makes this 'smart torque driver' you refer to? I would like to get some
information on it.
Thanks,
Jim Kittel
-----Original Message-----
From: Phil Nutting [mailto:[log in to unmask]]
Sent: Wednesday, March 17, 2004 1:36 PM
To: [log in to unmask]
Subject: Re: [TN] Torque Stripe
Ken,
We had a similar customer request. We didn't like the extra labor of
checking the torque or having one person monitor the work of another. We
had tossed around the idea of dipping the screw driver bit in paint then
torquing the screw, but that would get messy. I looked into several
different paints and settled on Uni-Paint markers by Sanford. They are
available in many colors, are very quick drying and are the size of a
hi-lighter or other marker. Our Final Inspector tightens the screws and
marks them before the unit goes to shipping.
Then to make sure the paint was used correctly I went through the process of
creating a document outlining what constituted a good and bad marking.
The data gathering torque driver we have "learns" the typical run-in of a
screw, then when tightening 100 screws it will notify the operator when
he/she has not tightened a screw properly, assuming all screws are the same
length and started with the same length of thread exposed. If I were to
"tighten" the same screw more than once the unit would beep and display an
"error" code.
One other thing we have started using is screws that have a Nylon patch on
the threads (ND Industries, Nylok and Long-Lok are manufacturers) with a
dimpled head (six small marks in the head for easy identification). The
theory being if driven in with a torque driver to a pre determined setting
the screw would not back out and was easily identified that it had the Nylon
locking patch.
Phil
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Bloomquist, Ken
Sent: Wednesday, March 17, 2004 10:24 AM
To: [log in to unmask]
Subject: [TN] Torque Stripe
Good Morning Technetters,
We have a new program in house where the customer is asking us for torque
verification on some hardware. I was wondering if any of you have some
clever ideas to make this an easy task. The obvious solutions are adding
some paint after torque, having someone check the torque after torquing and
having a witness while torquing. All of these are sort of painful.
By the way we are torquing phillips head screws.
Thanks for any thoughts,
KennyB
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