Back on CNC mill

David G

Well-known Member
I am getting back to working on the CNC mill.

The x and y axis motors are mounted.

I am working on the parts for the control cabinet and have posted pictures.

The power supplies and stepper drivers shown in the picture will be mounted on plates and slide vertical into the cabinet.

I have a large plate to mount the CPU and its power supply on.

Plan for today is get plates drilled and painted with gloss white so they can harden up.
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My SCSU department has a Dyna Myte 3 axis mill. It was conversational programming, and we changed it to G Code. New Steppers and drives. We are using Mach 3 running on Windows 10 to run the steppers. It seems operational and, as we fine tune the controller, accurate. Yours looks like it is going to be as good or better than can be purchased from any manufacturer. Jim
 
The drive screw backlash compensation can be an issue solved with software. I often remind my self and students that center sections of both screws may have 3 times the backlash that the ends of travel have. (assumes non ball screw drives). Jim
 
Yup, non ball screw drives, also figure that will be my biggest issue, thinking about putting linear encoders on after I get this working.
 
This is my home shop CNC when I got it about 5 years ago.

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Very fun and handy to make things on. It had been surplussed from a shop and sat in their warehouse for ~9 years before they decided to get rid of it. It would not run when they powered it up to sell so instead of spending money getting it running, they let it go cheap.


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