best molded thread form for low friction
best molded thread form for low friction
(OP)
Hello!
I am looking to position something with molded threads. it's small, low load. I'd like minimum friction.
Since I am molding the threads, I have some freedom. backlash is not a big issue.
I am thinking buttress- type threads will give less friction than acme or others. it will be a very steep, 3 start thread, so the goal is back-drivability, and low stroke. regardless, I will likely make them "stub" threads.
thanks for your thoughts.
I am looking to position something with molded threads. it's small, low load. I'd like minimum friction.
Since I am molding the threads, I have some freedom. backlash is not a big issue.
I am thinking buttress- type threads will give less friction than acme or others. it will be a very steep, 3 start thread, so the goal is back-drivability, and low stroke. regardless, I will likely make them "stub" threads.
thanks for your thoughts.





RE: best molded thread form for low friction
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: best molded thread form for low friction
Consider using a double-D shape, so the parting line mismatch doesn't get near a sliding surface.
Mike Halloran
Pembroke Pines, FL, USA
RE: best molded thread form for low friction
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: best molded thread form for low friction
For female threads, interrupted threads may be useful, but flash removal can be a problem.
It may be useful to mold around a polished male threaded core and spin it out.
Mike Halloran
Pembroke Pines, FL, USA