Pros/Cons of Multi-start Threads
Pros/Cons of Multi-start Threads
(OP)
I know that multi-start threads have a greater lead than single-start threads of equal pitch length, but are there any other differences in function? Is there any difference in strength between a single-start and a two-start thread with the same pitch?
Thank-you
Thank-you





RE: Pros/Cons of Multi-start Threads
Thread stress area would be almost identical, I suppose.
The advantage of multi-start threads is simply a faster lead in a shallower form depth. This could certainly improve the stiffness, and consequently critical speed of a lead screw used for motion control. Luer components, I imagine, use the thread form because of its shallow radial depth requirements and quick connect/disconnect abilities.
There are others on this forum who are more knowledgeable than I and they may correct me on a point or two...
RE: Pros/Cons of Multi-start Threads
I tell a local plastic molder that he wouldn’t be making multi lead threads without the computer and CNC machines. It used to be a bear to generate multi leads so we always fell back on the interrupted thread.
RE: Pros/Cons of Multi-start Threads
Funnelguy's point about load sharing is well made.
Cheers
Greg Locock