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Messages - Pete92

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1
General Mach Discussion / Logicnc RCNC
« on: June 18, 2015, 07:50:52 AM »
Hello,

Does anyone know if Logic CNC are still trading? I would like to buy there RCNC controller but need a shipping cost to the UK.

Thanks,

Pete

2
General Mach Discussion / Need to get this Emco finished.. HELP
« on: June 14, 2015, 06:15:20 AM »
Hello folks. For the last year or so I have been converting a Emco Compact 5 MK1 to run on Mach 3 Software. I basically removed all the original steppers and control boards and built up a new unit using a kit from 'CNC 4 U'. I know probably not the best quality stuff but for what I'm doing it should be fine. http://www.cnc4you.co.uk/CNC-Kits/Stepper-Motor-Kits/Nema23-Stepper-Motor-Kit-4Nm-x-3-Axis

I got that up and running fairly easily getting both axis moving using the trial version of Mach 3.

Then it came to the spindle, which is where I am now stuck. I would like to control the spindle using Mach 3. The original Emco motor is an odd voltage so I am going to swap it out and use a motor I have from a college project: http://www.hobbyking.com/hobbyking/store/__37213__Turnigy_Aerodrive_SK3_6374_149kv_Brushless_Outrunner_Motor_UK_Warehouse_.html?strSearch=149kv I will run this with a 24v power supply.

My first question is how do I get the breakout board connected with the motor? From what I can gather reading other topics its to do with PWM. What components do I need and how do I connect them up to get the computer to run the spindle.

The next issue is once I have got the spindle sorted, how do I wire in the spindle rotary encoder. The lathe has the original encoder still attached, can I use this or do I need to swap it out for something more compatible?

Hopefully if someone can help me out with this lot then I can have my lathe up and running soon. Many thanks in advance.

Another little niggle is that there are no limit switches on the machine. Are these required or is there a setting in Mach3 to stop the axis when it has reached the end of its travel?

Many thanks,

Peter



3
General Mach Discussion / Re: Compact 5 Mach3 conversion
« on: December 02, 2014, 03:46:11 PM »
Many thanks for the advice chaps! That unit looks good. Im quessing instead of having the switch there I can wire that to the Spindle relay on the BOB?

Do I need to buy a transformer to run this unit? If so any advice on which one to get?

Cheers,

Pete

4
General Mach Discussion / Compact 5 Mach3 conversion
« on: November 30, 2014, 07:19:54 AM »
Hello Folks.

For a few months now I have been modernizing a old EMCO Compact 5 MK1 CNC lathe. I have built a new control system using a kit from CNC4You (Probably not the best parts out there but it will do the job for now). I have also replaced the stepper motors as the originals couldn't pull the skin off a rice pudding.

All that works fine now, so I am on to figuring out how to run the spindle... this is what I cant figure out. The lathe has a 180vDC 3 amp motor. Could anyone on here tell me the method to which to connect this to the BOB and the mains. From reading other posts on this subject, it looks like I need one of these:

http://www.ebay.co.uk/itm/5A-Motor-Speed-Driver-Controller-MACH3-Spindle-Governor-PWM-Speed-Control-AC-DC-/321376265778?pt=UK_BOI_Industrial_Automation_Control_ET&hash=item4ad384a632

But after that I am stuck. How do I connect this to the Mains and to the Breakout board? I am not an electrical person really, so any help and advise people can give me would be great.

Many thanks,

Peter Dawson

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