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Push and Pull a Rotating Shaft from a Fixed Position

Push and Pull a Rotating Shaft from a Fixed Position

(OP)
I have done a little searching and can't seem to find info on means and methods about pushing and pulling rotating shafts. I am working on an electronically controlled CVT for the application.

One-half of the pulley is fixed to the driving shaft. The other is driven by roller bearings which transfer the torque to the second pulley. The roller bearings allow torque to be transmitted while the 2nd pulley half can translate axially along the shaft. I want to be able to control the 2nd pully's axial position with an isolated stepper or servo motor. The stepper motor is fixed and rotates a small amount controlling the translation movement while the 2nd pulley is rotating at 3800 rpm. I am not sure how to push an pull this second pulley with a fixed motor while allowing the pulley to rotate.

Does anyone have any recommendations where to look? I have not seen this in industry or text books and am not sure where to look.

Cheers!

RE: Push and Pull a Rotating Shaft from a Fixed Position

Link

je suis charlie

RE: Push and Pull a Rotating Shaft from a Fixed Position

Have you ever repaired a clutch?

RE: Push and Pull a Rotating Shaft from a Fixed Position

You want a yoke with thrust bearings mounted on a servo powered linear axis.

RE: Push and Pull a Rotating Shaft from a Fixed Position

The age of automatic transmissions...

RE: Push and Pull a Rotating Shaft from a Fixed Position

Not the exact mechanism, but a couple useful ones are shown:
https://youtu.be/wCu9W9xNwtI

RE: Push and Pull a Rotating Shaft from a Fixed Position

(OP)
Thanks for the Suggestions. I have not worked with more than simple gear trains before. To use thrust bearings, I would have to use two of them for to both push and pull. I have not seen thrust bearings used in such a manner. I have not had to repair a clutch before. From what I am finding, I am probably going to have to use either taper rollers or something similar to a throw out bearing as they are not meant to be constantly loaded. Is there a mechanism similar to a throwout bearing which can constantly be loaded? @gruntguru Your link doesn't illustrate any mechanism about axially moving shafts from non-rotating parts.

RE: Push and Pull a Rotating Shaft from a Fixed Position

For loading in both directions there are often two bearings mounted back-to-back.
There are bearings designed to be used like this, often they have a common inner race.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

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