drawoh
Mechanical
- Oct 1, 2002
- 8,912
I am examining somebody's custom torsion spring and I want to make suggestions about their drawing. What I want is for the drawing to call up spring rate and maxiumum rotation. This is inspectable for us, as opposed to verifying the specific alloy and heat treatment (which they did not call up).
If I were concerned about metal fatigue, is there a crude rule of thumb that lets me specify an extension in excess of required that would allow for fatigue? For example, if my spring must exert 0.05N.m torque at 90[°], can I specify 0.1N.m torque at 180[°], and assume that anything that passes is safe?
--
JHG
If I were concerned about metal fatigue, is there a crude rule of thumb that lets me specify an extension in excess of required that would allow for fatigue? For example, if my spring must exert 0.05N.m torque at 90[°], can I specify 0.1N.m torque at 180[°], and assume that anything that passes is safe?
--
JHG
