Search found 42 matches

by francoCNC
Fri Nov 24, 2017 11:09 pm
Forum: Centroid Acorn CNC Controller
Topic: encoder suitability
Replies: 59
Views: 20189

Re: encoder suitability

That's pretty slick but ouch on the price. :shock: Hi Scot - I think I know what you are looking for. I'm working on a solution: Capture.PNG I just put this on my G0765 mini-lathe but I haven't wired up the encoder - I'll do that tomorrow. I'm not sure how smooth the gears will run. This approach w...
by francoCNC
Fri Nov 24, 2017 9:17 pm
Forum: Centroid Acorn CNC Controller
Topic: Replacing a Potentiometer on a DC Motor Speed Controller
Replies: 13
Views: 5515

Replacing a Potentiometer on a DC Motor Speed Controller

Many of the small machines made in Asia have DC motor controllers with a Potentiometer labeled P1, P2 and P3. See image. P1P2P3.PNG Since the Acorn has a 0-10V analog output, I'm thinking it should be easy to "override" the potentiometer and have the Acorn control spindle speed. Would I si...
by francoCNC
Thu Nov 23, 2017 2:01 am
Forum: Centroid Acorn CNC Controller
Topic: What CAD program for wiring are you using?
Replies: 17
Views: 6360

Re: What CAD program for wiring are you using?

What do you think about SchemeIt from DigiKey?

https://www.digikey.com/schemeit/project/

It's free and it seems to work pretty good.
by francoCNC
Wed Nov 22, 2017 7:16 pm
Forum: Centroid Acorn CNC Controller
Topic: OMRON E6B2-CWZ1X Encoder Unboxining and Overview
Replies: 22
Views: 9824

Re: OMRON E6B2-CWZ1X Part 3?

Yep, I pulled the cover off to take a peek at the inside of the encoder. I also got a message from the Ebay seller. See what surprising info I got out of our discussion... https://youtu.be/OI-4-1K2q_A Hi Marty. Question: I'm told that when it comes to spindle encoders, it is possible to have too ma...
by francoCNC
Wed Nov 22, 2017 7:13 pm
Forum: Centroid Acorn CNC Controller
Topic: OMRON E6B2-CWZ1X Encoder Unboxining and Overview
Replies: 22
Views: 9824

Re: OMRON E6B2-CWZ1X Encoder Unboxining and Overview

I only have to find a way to mount the encoder on my machine. I run a small Optimum BF20L mill in the attic. I replaced the origional motor with a Sangmutan BLDC motor, also from China, running very well the last 1.5 years, and I installed a belt drive from desktopprecision. I run the machine in hi...
by francoCNC
Wed Nov 22, 2017 7:10 pm
Forum: Centroid Acorn CNC Controller
Topic: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion
Replies: 18
Views: 7689

Re: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion

Hi. You sound like you have some interesting projects going on. I like the idea of the G0678 conversion, but I'd like to use the table as the Z-axis and that does present some challenges. I'm still mulling it all over. I'm also thinking about the G0722. Decisions, decisions...
by francoCNC
Wed Nov 22, 2017 7:06 pm
Forum: Centroid Acorn CNC Controller
Topic: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion
Replies: 18
Views: 7689

Re: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion

Franco, did you see this thread about the PM 727? http://centroidcncforum.com/viewtopic.php?f=60&t=1105&sid=469200d86837ad92e63caf178d12c6b0 Hi. Yes I did. There is so much good information moving back and forth, it's hard for me to keep tabs on it all. :shock: Dumb question: Is there a way...
by francoCNC
Tue Nov 21, 2017 10:04 am
Forum: Centroid Acorn CNC Controller
Topic: CNC12 for Acorn vs Centroid industrial system software
Replies: 7
Views: 3250

Re: CNC12 for Acorn vs Centroid industrial system software

Thanks Marty - you are in the know. I think people who are used to using Mach3 find it hard to believe that something as good as Centroid CNC12 can be available to the DIY guys. I think they are afraid to make a change.

-Franco
by francoCNC
Sun Nov 12, 2017 9:32 am
Forum: Centroid Acorn CNC Controller
Topic: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion
Replies: 18
Views: 7689

Re: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion

Thanks Guys - I appreciate your input. Let me tell you how I got on this knee mill kick. I've done a few conversions on bench top style bed mills and I've determined they all suffer from the same weakness: the slot in between the Z-axis dovetails. Capture.JPG The slot allows the ball screw to lift t...
by francoCNC
Sat Nov 11, 2017 8:41 am
Forum: Centroid Acorn CNC Controller
Topic: Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion
Replies: 18
Views: 7689

Grizzly G0678 - 8" x 30" Variable-Speed Vertical Mill CNC Conversion

Hi. I'm thinking about doing an Acorn CNC conversion on a 8x30 milling machine. I want something more rigid than a bench top machine and these 8x30 mills appear to be the biggest machines I can still move with my 2-ton engine hoist. I'd appreciate any insights you guys are able to provide. I want to...