Emco Mentor Mill conversion

[Ross77]

So after a long time away from anything hobby related I have finally got around to some shed time.

having learned from my drill conversion saga I hopefully have done it properly now and just bought a descent mill to convert to cnc. It is actually an EME mentor mill MM1 base with a Maximat7 mill head. 4 speed gear box and 0.25kW 415V 3 phase motor.



The main problem is that the motor is 415v and the plastic gears in the gearbox are shot. In light of this I think the best option is use a DC motor from a treadmill and convert it to belt drive giving full speed control and 2hp.

The existing motor is part of the top plate and also holds the bearing for the final drive cog. To fit a different motor would mean making a new plate. Not having a working mill does pose the problem of how to make this.



Any takers for quoting to make this part? subjec to proper dims and drawings etc.

Cheers

[Swarfing]

Ross

I'm rebuilding the head off my Arboga at the moment where the gearbox sits on top. i had to dump this to build a direct drive. I would just mount the mount up off the top plate you have already and remove all the gubbins from your box. This way you would just need a couple of pieces of Bar to raise the motor in the air to accommodate the pulleys.

[John S]

Same as Ross.
Saw the top plate off the motor, job done and everything fits and is in line.

[Ross77]

Thanks Swarfing and John. I always seem to miss the easy solutions, although I was hoping to make all mods reversible. Didnt want to hack up something that I might be able to sell. Are 415v motors for these machines worth anything?

I'll have another look and see if the end plate will come off without destroying the motor, that would be the best out come.

Thanks again

[Swarfing]

If it wires 230 - 240v delta then just wack a vfd on it and away you go :-)

[Ross77]

If it wires 230 - 240v delta then just wack a vfd on it and away you go :-)

How can I tell? motor plate says 440v and there isnt the normal terminal box for changing star or dlta configurations. will a 440v motor run on 240v not be half as slow?

Cheers

[andre13442]

my problem is a mystery to me, I have, to my knowledge, tried everything to get my running spindle motor. The spindle motor is a DC motor max. 180 volts, placed on the spindle motor is a Rotery encoder with the outputs A and B and Z (Z but I do not use). The breakout board (5-axes) is a Mach3 HG08, ordered (CNC4YOU) Axes X, Y, Z, A, work perfectly. The B input is used for the spindle motor. Inputs are: GND, Vcc, CK, CW, AND (AND not connected). The first 5 are connected to a DG2S-16035 Servo drive (with 8 inputs total) via a UTP cable. Input 1 (CK) 2 (CW) 3 (GND) 4 (NOT USED) 5/6 (VCC) 7 (external DC power) 8 (External DC gnd). Encoder input of the DG2S-16 035 is connected via a UTP cable to an encoder interface, and the encoder interface is reconnected to the Rotery Encoder on the spindle motor. summarized: I have all the wires, cables, checked for fractures, but all cables are good. The settings in Mach3 (see photos). I have to be sure all components exchanged with new components, ie, the DG2S-16 035, the External Braking Circult Connector, Encoder Interface, and even the Breakout board (HG08), the Rotery Encoder, on The spindle motor, the result was the same, no rotating spindle.

[Clive S]

Andre Welcome to the forum. This thread is over a year old now.

It might be better if you start another thread of your own so as to keep all the questions and answers in one place. and tittle it accordingly.

Can you post a picture up of the spindle as well. I am sure others will chime in with offers f help.

[andre13442]

Andre Welcome to the forum. This thread is over a year old now.

It might be better if you start another thread of your own so as to keep all the questions and answers in one place. and tittle it accordingly.

Can you post a picture up of the spindle as well. I am sure others will chime in with offers f help.

Can you send me The link to start a new thread?, thank you.

[Clive S]

Can you send me The link to start a new thread?, thank you.

Andre I see that you have this sorted now and started a new thread. Good Luck