screw mechanism analysis
screw mechanism analysis
(OP)
Hi,
The product I'm am analyzing contains a screw mechanism. And I need to verify the structural integrity of this mechanism.
How do I analyze the thread? Both static strength and fatigue properties need to be assessed. I'm sure there are hand calculation methods available, but I have not been able to find any (where should I look?).
Best Regards,
hpon
The product I'm am analyzing contains a screw mechanism. And I need to verify the structural integrity of this mechanism.
How do I analyze the thread? Both static strength and fatigue properties need to be assessed. I'm sure there are hand calculation methods available, but I have not been able to find any (where should I look?).
Best Regards,
hpon
Regards,
hpon





RE: screw mechanism analysis
RE: screw mechanism analysis
Just about any machine design book should have a discussion on loading of threads. It sounds as though you are running some type of linear actuator or auger.
I suggest either:
1) Machinery's Handbook
2) Shigley & Mischke
PetieSmo
RE: screw mechanism analysis
I shall look into the literature you have suggested.
The machine is a fixture for a solid block of steel. The gripping mechanism is very forceful, and its motion is driven by the mentioned screw. My primary goals regarding the thread of the screw-mechanism, are to ensure that it is:
1) stronger than the cross-section of the bolt
2) suitable for repeated use
Any advice on how to achieve these goals would be greatly appreciated.
/hpon
Regards,
hpon
RE: screw mechanism analysis
if you keep the stress range below 6% of the UTS (taken as a max of 785MPa) fatigue of the 'bolt' won't be a problem (BS7608)
www.priamengineering.co.uk
RE: screw mechanism analysis
RE: screw mechanism analysis
hpon
Regards,
hpon
RE: screw mechanism analysis