|Project by oldnovice||posted 12-31-2015 08:29 PM||1497 views||0 times favorited||11 comments|
This is a jack screw I made for another project that I cannot post as the owner is not ready for prime time.
The wooden pieces are 1/2” MDO with a 1/4”×20 screw, a custom screw traveler, spring (not visible), and an old instrument knob.
This assembly mounts on a T Slot extrusion with the two top 1/4”×20 bolts/nuts and the roller bearing fits into the bearing pocket.
The red line is an indicator for nominal location and the screw/know allows a total +/- .25” adjustment, at 0.05” per turn, from nominal.
I hope to be able to post the entire project soon!
Added two CAD views.
-- "I never met a board I didn't like!"