Member postings for sam sokolik

This is the latest code for linuxcnc

**LINK**

Greenslands - replied - what control are you using?

Actual spinning encoder. (thought I put this in another video..)

Other than the spindle synced motion - the gcode is normal. You could do a pause every so far..

sam

I think I get a D for effort...

Encoder seems to work better...

Not quite... Linuxcnc is just as happy running open loop step/dir as it is running closed loop. You can even mix and max. (step/dir with feedback lets say.)

Crap explanation..

Phase 2 - Better spindle encoder..

Ok - I need to get a higher resolution encoder.. Then The surface finish will be better and I will be able to go slightly faster.... (I might have to bake in backlash comp too.... (x axis has a bit of backlash))

Broach this! (the vertical lines are the encoder resolution...)

Hmm...

A hex bolt head isn't exactly a standard.. but..

This is a simple hal component that takes the spindle posltion from the encoder and calculates where the x/y axis need to be to keep the tool tip perpendicular to the polygon. (well - to the inscribed circle.) This is done in the real-time layer of linuxcnc. So 1000 times a second it reads the spindle postion and calculates the polygon shape. I use currently the digital/analog i/o functionality in gcode to communicate with the component. I think it could be converted to remap to make it more user friendly. I don't have the gcode here at the moment but I think this is the latest hal component.

**LINK**

I also am working on the functionality of slaving the x axis to the radius of the polygon... SO you can do things like create a profile for the polygon to follow. So this is a radius into a taper..

I expanded on the work Andy did...

I decided to see if I could create a polygon shaped hole with a little math and a cnc..

 

And now in aluminum!

 

 

Edited By sam sokolik on 31/03/2020 04:16:05

BTW - it isn't like things are not getting improved.. This was less than 1 month ago... Related to spindle synced motion..

Code improvements..