how to calculate the spiral shaft 2

[windihaps]

I want to know how to calculate the spiral shaft intend to tranlation velocity. where will i get the reference for the calculation and all about spiral shaft?

 

[MikeHalloran]

Imagine a piece of paper in the shape of a right triangle.

Imagine that it's special paper, of zero thickness.

If you hold one square edge parallel to the axis of a cylinder, and wrap the other square edge around the cylinder, the hypotenuse will form a helix.

Assume the cylinder is of the pitch diameter of the spiral shaft.

Now, the problem has been unwrapped into a wedge; you can probably figure the kinematics from there.



Mike Halloran
Pembroke Pines, FL, USA

 

[WhiteTiger]

http://www.roton.com

is the website of a manufacturer of motion screws, and the site has a lot of handy and pertinent formulae for these calculations, as well as a beta version of a calculator program and a glossary of terms.