Oscillating spindle sander

The green spindle with sanding sleeve rotates and moves up-down at the same time.
The spindle and the blue worm shaft are connected together by a slide key joint.
The up-down motion of the spindle is made possible by a worm gear drive, orange eccentrics, yellow connecting rods, blue rocker and red sliders.
This design can be used for this machine:
https://youtu.be/qq-Xst8fcdo

STEP files of this video:
https://www.mediafire.com/file/7pydkgk2wfuyjt0/OscillatingSpindleSanderSTEP.zip/file
Inventor files of this video:
https://www.mediafire.com/file/mzpeo7fwwoknc8u/OscillatingSpindleSanderInv.zip/file

Видео Oscillating spindle sander канала thang010146