Messages

31

General Mach Discussion / Re: Swapaxis and Spindle Relays

« on: November 13, 2011, 12:32:40 AM »

Well I solved the problem another way and imroved the whole thing along the way. I decided to go to an AC servo for the spindle. Lots of benefits other than fixing this issue.

32

General Mach Discussion / Re: Opinions For Spindle HP

« on: November 13, 2011, 12:29:40 AM »

So I went ahead and picked up the DSD-020-SE, Active shunt and a 4050 motor. Got good deals on them all and hope they all work out. The project may take a while however as I need to convert to a Smoothstepper from my current PP setup. Been wanting to do that anyway and will need it now for sure. I've blown my budget for a while here however so that will have to wait. If anyone has one they want to let go cheap I'm all ears. Should give me time to figure out mounting, gearing and the software for the driver anyway. Thanks again for the help.

33

General Mach Discussion / Re: Opinions For Spindle HP

« on: November 12, 2011, 04:19:10 PM »

Perfect I can figure it out from there. I knew that degree in Electronics would come in handy some day.

34

General Mach Discussion / Re: Opinions For Spindle HP

« on: November 12, 2011, 03:55:03 PM »

Yes the shunt, I'll see what I can find. Sorry AC servos are new to me.

On another note I noticed in one of your other posts talking about line drivers for the DSD drives. What levels are they looking for on STEP and DIR? Do you have a sample schematic of your solution?

35

General Mach Discussion / Re: Opinions For Spindle HP

« on: November 12, 2011, 03:41:20 PM »

Is there a particular unit you recommend? Or a rating that is required?

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General Mach Discussion / Re: Opinions For Spindle HP

« on: November 12, 2011, 03:27:49 PM »

Could you explain the active shunt to me? Save me a bunch of research time. Thanks

37

General Mach Discussion / Re: Opinions For Spindle HP

« on: November 12, 2011, 03:13:29 PM »

What size driver does the F4050 require?

38

General Mach Discussion / Opinions For Spindle HP

« on: November 12, 2011, 02:40:33 PM »

So I have an old Lagun mill that I've converted to CNC. It works great but I am considering using an AC servo for the spindle. The current setup uses a 5hp 3phase motor at 1750 rpm. It has a variable belt clutch setup that is easy for speed changes but still a manual process. Plus I'd like to get rid of the 3 Phase if possible. So here's the question. What would you consider as a minimum HP or KW rating for the new motor? My thought would be if I pickup max RPM to say 4000 I could lose some HP and keep the cost down. I'd eliminate the adjustable clutch and drive the 2 speed gear box directly.  That way I still could have good slow speed torque if needed.

This is a home system so production is not an issue. I don't mind cutting slower but I don't want to cripple the machine either.

39

General Mach Discussion / Re: Allen Bradley Guru's

« on: November 12, 2011, 02:32:09 PM »

Great thanks for the info.

40

General Mach Discussion / Re: Allen Bradley Guru's

« on: November 12, 2011, 10:29:11 AM »

Thanks for the information. The drive I was looking at is the DSD drive. I don't see the STEP and DIR for SE model listed in the manual. So are you saying that if I disable the SERCOS option then the pin out changes to the non-SE version and STEP and DIR will be available?