Centroid Community CNC Support Forum

Hello,
I am new to this board, CNC, Machining, ... well everything!

My upcoming build:
- Precision Mattews PM-30MV. Should arrive in a couple of weeks.
- DMM DYN4 & 0.75KW Servo Motor for X,Y. Arrived
- DMM DYN4 & 0.75KW Servo Motor with Braking for Z. ordered
- DMM DYN4 & 1.8KW Servo Motor for Spindle motor. Ordered
- CNC Aluminum brackets and double nut ball screws kit from ArizonaVideo99. Being made.
- DMM power and control cables
- DMM encoder cable for Spindle to Acorn
- Acorn with Pro CNC software
- Dell Touchscreen all-in one.

Spent a LOT of time on youtube. Huge thanks to Youtube's Franko, ArizonaVideo99, CNC4XR7, martyscncgararge. These guys got me gluded to youtube, so much so, that I went from knowing 1% of how to do this to may be 20%, which is a big deal. It ain't easy. So I have still 80% to go .

Right now, I am creating the wiring diagram, the hardest part for me, for now. I am getting there. I have the control cabinet and most of the components to start wiring. Major thanks to DMM's Michael Tien for helping me with the Spindle Servo Motor and cables. Major thanks also to Franko and CNC4XR7 for hooking me on DMM and for the million videos on the PM-727 CNC conversion, most helpfull series of videos for newbies. Thanks also to martyscncgararge for a great variety of CNC videos, espcially those on wiring.

Now comes the hard part, getting the PM30 in the basement and actuall doing the conversion. I also have build a base, learn welding, learn fusion 360 as well as milling, acorn, etc ... I am ecstatic and nervous at the same time.

Side note: I have ordered and received a brand new unopened Delta series M VFD (Single in/3 phase out 220 volts) and it matching braking resistor. Since I am going with Servo spindle, I don't need them anymore. Make me an offer if you want to buy them before they go on Ebay.

I also may be interested in selling the Motor that will come-off the PM30MV. It is a 2HP 3000 rpm 220V single phase DC Brushless motor. Offers welcome.

Alex.

welcome aboard...
start a photo album and keep adding photos to it as you go along..

So if I can't post photos from my computer? What public site(s) do you use to store your pictures? Can I use photos posted on Amazon drive? How do I add a photo Album?

I’m excited for you! I started from scratch as well, but on a much smaller scale. You should be able to attach pics to your posts here. Looking forward to seeing your progress!

If you have a gmail account (Free) you also get a Google Photo album but feel free to post them in your messages here as attachments.

Looking forward to following your build as well.
Marty

Thanks ScotY and Marty. I will use google drive. I have an account already.

Question to all: would you like me to post updates on everything related to the build such as welding the stand buying components, cost, unloading the PM30, taking apart and getting down to my basement, etc .... OR, only updates on wiring, bench testing, the Acorn DMM stuff?

That's up to you.....
Uses Google photos....post here

First complication to solve: Acorn and DMM z-axis with or without Holding brake

Option 1
DMM 86mm Frame DHT 0.75kW AC Servo Motor With Key

Option 2
DMM 86mm Frame, 0.75kW, medium inertia with +24VDC holding brake

The diffrence between the two is the 24Volt holding brake. I ordered both, but I am returnign one of them,

Attempting to load a picture for the first time

https://drive.google.com/open?id=12DuNd ... nnnDKtu7ed
(I have to figure out how to insert the picture in the running text, it is not working, please see the link for now)

Two Questions:
1) Do I need a holding brake on the Z-axis Servo?

2) The two DMM Servo motors have the same frame, power and wiring, except for the extra aviation plug (please see red arrow in picture). It is a 3 pin plug. How does this get wired to the Acorn board?

Describe your Z axis. The brake is used to keep the Z axis spindle head assembly from falling. Usually when the Z axis moves on linear rails and a ballscrew.

If your Z axis is on Dovetail ways, (most likely on your mill) you probably don't that need the brake.

You order the brake plug/cable from DMM a d you wire it to an output on Acorn. Choose the appropriate option in the ouput drop down in the Wizard.

Marty

The Z-axis is indeed Dove-Tail on the PM-30MV, based on the PDF. Attached.

I will follow up with DMM as you mentioned.

Link to PM30 Z-Axis
https://drive.google.com/open?id=1XdQsU ... TzN0CZOvRW