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Designing Test Joint - 500 ft lbs
Hi all,
[B][U]Problem[/U][/B]
I'm working on designing a test joint to test torque output of various power tools: impact wrenches, direct drive tools, click wrenches, etc. The joint must be able to withstand thousands of rundowns at max torque of 500 foot pounds.
[B][U]Design
[/U][/B]
[IMG]http://www.engineersedge.com/engineering-forum/attachment.php?attachmentid=1267&stc=1[/IMG]
The TJ will be designed similar to my drawing, a bolt that threads into an outer sleeve component, with washers to soften the joint (I.E. more cushion).
I'm thinking an ASTM A193B8 Bolt will work. 1 inch diameter, 3 inches long
My main question is this...
How do I determine the type and quantity of washers to be used? The operator will be able to remove washers as necessary in order to harden the joint, but I want to make sure that I can get it soft enough.
Thanks,