Search found 237 matches

by Upnorth
Thu Aug 04, 2022 9:59 am
Forum: Centroid Acorn CNC Controller
Topic: Swapping from permanent magnet motor to servo question
Replies: 7
Views: 816

Re: Swapping from permanent magnet motor to servo question

My lathe is a Hercus Compulathe. It's small. The chuck is 4" (100mm). Current spindle motor is 500 watts. Material I want to drill is 0-1 and A-2 tool steel. I would like to use the C axis to engrave a part number with one live tool, and drill a center hole. Maximum drill will be .129" dia...
by Upnorth
Thu Aug 04, 2022 9:22 am
Forum: Centroid Acorn CNC Controller
Topic: Swapping from permanent magnet motor to servo question
Replies: 7
Views: 816

Re: Swapping from permanent magnet motor to servo question

Lol ok that's a lot bigger and more expensive than I was hoping for.

I guess maybe I should abandon that idea. New question is how big of a servo do I need if I just want to replace the motor and use it as a spindle motor only.
by Upnorth
Thu Aug 04, 2022 8:22 am
Forum: Centroid Acorn CNC Controller
Topic: Swapping from permanent magnet motor to servo question
Replies: 7
Views: 816

Re: Swapping from permanent magnet motor to servo question

Unfortunately it will be worse than 1:1 when in high speed range.
by Upnorth
Thu Aug 04, 2022 7:27 am
Forum: Centroid Acorn CNC Controller
Topic: Swapping from permanent magnet motor to servo question
Replies: 7
Views: 816

Swapping from permanent magnet motor to servo question

The recent discussion about the C axis lathe got me thinking it might be interesting to try on my lathe. I currently have a 180VDC 500 Watt permanent magnet (3/4 horsepower) motor powering my spindle. My question is how to choose a replacement spindle motor. I think it's likely that I can't just swa...
by Upnorth
Fri Jul 22, 2022 3:12 pm
Forum: Centroid Acorn CNC Controller
Topic: C-Axis for lathe (construction in progress)
Replies: 50
Views: 10366

Re: C-Axis for lathe (construction in progress)

Very nice. I was wondering if it was possible to do engraving in a lathe. Now I know it can be done.
by Upnorth
Fri Jul 22, 2022 1:29 pm
Forum: Centroid Acorn CNC Controller
Topic: Novakon M200 w/steppers
Replies: 14
Views: 2627

Re: Novakon M200 w/steppers

Ok I also have a Novakon NM-200 converted to acorn and I did not use the resistors on my proximity sensors.
by Upnorth
Tue Jul 19, 2022 6:06 pm
Forum: Centroid Acorn CNC Controller
Topic: Novakon M200 w/steppers
Replies: 14
Views: 2627

Re: Novakon M200 w/steppers

Do you have mechanical or proximity sensors for your limit switches?
by Upnorth
Mon Jul 18, 2022 2:51 pm
Forum: Centroid Acorn CNC Controller
Topic: Lathe-ATC 4bit-grey-code_1-output not working, can someone help me?
Replies: 19
Views: 2581

Re: Lathe-ATC 4bit-grey-code_1-output not working, can someone help me?

If I type M6 T3 in my MDI line nothing happens. For me to change a tool the format to make the turret move is T303 then I press cycle start to execute the tool change.
by Upnorth
Mon Jul 18, 2022 1:26 pm
Forum: Centroid Acorn CNC Controller
Topic: Lathe-ATC 4bit-grey-code_1-output not working, can someone help me?
Replies: 19
Views: 2581

Re: Lathe-ATC 4bit-grey-code_1-output not working, can someone help me?

What exactly are you typing to activate a tool change in the MDI line?
by Upnorth
Mon Jul 18, 2022 1:24 pm
Forum: Centroid Acorn CNC Controller
Topic: New Rebuild on Sherline Chucker Lathe & New build on 5400 mill
Replies: 227
Views: 26090

Re: New Rebuild on Sherline Chucker Lathe & New build on 5400 mill

I think the increment on mine is .0005". A complete rotation of the needle is .030". I looked them up, probably worth having one at at some point. thanks for the input on these I did not know they existed. They have many uses but in my case are most often used to align the fixed vise jaw ...