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how to calculate the spiral shaft 2
- Thread starter windihaps
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MikeHalloran
Mechanical
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
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
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1
- #3
WhiteTiger
Mechanical
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.
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