2024-08-29

Last modified: 2024-08-29 14:24:33

• CNC machine
• Spindle tramming

CNC machine

I finished tapping the holes in the plate, deburred both sides, draw-filed both sides, and put the plate back on the machine:

That was a lot more work than I expected, but done now.

Still wants:

• tram the spindle - I'm thinking I shim the X carriage instead of the gantry, easier to do and less contact area to cover
• cable management in tub
• grblHal
• probably actual hose clamps instead of cable ties
• automatically run the spindle coolant pump when the VFD is powered

Spindle tramming

I put an indicator in the spindle and rotated it across the (now presumed flat) table surface.

By loosening the screws on the spindle clamp and tapping it around, I now have it so that the indicator shows the table is about 0.04mm low on the left hand side compared to the right, at a diameter of about 180mm.

And I don't have easy adjustment forwards/backwards, but it showing that the table is about 0.02mm high at the back, at the same diameter.

That sounds... basically perfect? At the diameter of a 6mm end mill that is a difference of barely more than 1 micrometer across its diameter. So why does the machined surface look like it is not trammed anywhere near this well?

I think I'll leave it for now and revisit after I've made some more parts.