nick
January 3, 2019, 12:25pm
1
I think this could be the future of V wheels, having sliding blocks seem to give much greater stiffness and are more resistant to jamming from chips but they need much more callibration to work well…
I know it’s speculation, but I am pretty sure I have seen some on a few Shapeoko’s on Instagram
# Hank - medium format CNC mill
*March 2017*
*Bought parts on the left, self fabricated parts on the right*
*Hank after his first test job*
* A gantry based CNC milling machine where a substantial amount of the parts can be fabricated on a CNC mill
* Linear rails, rack, pinion and glide blocks can all be fabricated on a conventional CNC milling machine
* Based on the chamfer rail system in this repo
* Work area is 600mm x 300mm x 50mm
* The rack and pinion has 4.444444 steps per mm with a 200 step motor
**Design wins**
* It is possible to build a big machine with the chamfer rail system
* Making long rails with the chamfer rail system is easy and fast
* Combining standard proportion chamfer rails with custom machine parts *(axis plate, bed and gantry)* works great.
* Pure POM/Delrin glide blocks on aluminum rail is ok, but not optimal. Next is testing PTFE infused POM. Worst case we will have to revert to brass for glide surfaces.
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Luke
January 3, 2019, 1:01pm
2
I think I might be able to help here
The Beaver HDZ uses linear sliders and guides.
With the above design it looks very interesting, however note the need of a commercial cnc to build it…
3 Likes
system
February 2, 2019, 1:01pm
3
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