Messages

7161

FAQs / Re: Upgrading an old cnc mill

« on: October 22, 2010, 10:48:10 AM »

Hi John,

I look forward to seeing some pictures and hearing about your progress with your mill conversion.

Tweakie.

7162

General Mach Discussion / Re: Electronics experts - Why wont this work?

« on: October 22, 2010, 04:39:41 AM »

Just a thought but you could take the 5V from your PC USB - this would preserve the isolation. Also increasing the 470R value would be good.

Tweakie.

7163

FAQs / Re: Upgrading an old cnc mill

« on: October 22, 2010, 04:36:13 AM »

Hi John,

A similar issue - I have converted an old Boxford by throwing out all but the spindle controller and fitting a cheap Chinese controller board bought on eBay. There are some details here which you may find of interest http://www.cooperman.talktalk.net/files/14.htm

The modern CNC controller electronics (microstep and reduced standby current etc. etc.) makes it well worth while, in my opinion, to update what is essentially a very good machine.

Hope this helps.

Tweakie.

7164

General Mach Discussion / Re: IM NEW USER FOR MACH 3 CONTROLLER

« on: October 22, 2010, 04:09:52 AM »

Hi,

It is not necessary to make multiple postings of the same subject on this forum. In fact it probably has the reverse effect to what you require.

Tweakie.

7165

General Mach Discussion / Re: Maxnc

« on: October 22, 2010, 04:05:50 AM »

Hi Guys,

I think they have done more than gone fishin'

The forum and other discussion boards with any mention of their trading status have all been erased now.

Tweakie.

7166

General Mach Discussion / Re: Electronics experts - Why wont this work?

« on: October 22, 2010, 03:57:32 AM »

Yes, re-check all your wiring.

I have one additional point of concern in that you really cannot expect to take your 5Volts from the PC parallel port - you must provide a proper supply for this. In fact this alone may be the root of your problems.

Tweakie.

7167

General Mach Discussion / Re: Xenetech CNC machine adaptation

« on: October 22, 2010, 03:30:35 AM »

Hi Marcelo,

I have sent Gerald a PM asking for the information. If he replies I will post the details of the plug interconnections etc.

Tweakie.

7168

General Mach Discussion / Re: z axis moving to far

« on: October 22, 2010, 03:18:36 AM »

Hi Bernie,

I am just guessing here but if, for example, your Z Axis has not been correctly zeroed before you start (Z Axis DRO) then this may happen. Another reason is 'safe Z' enabled (config/safe z setup) which could be incorrectly setup.

Tweakie.

7169

General Mach Discussion / Re: Electronics experts - Why wont this work?

« on: October 22, 2010, 03:07:46 AM »

As far as I can see you have a wiring error which is causing a conflict of the logic signals. If there was no conflict then the levels would switch cleanly between high and low (5V and 0V).

All I can suggest is that you re-check all your wiring.

Tweakie.

7170

General Mach Discussion / Re: 4th Axis move after feed hold

« on: October 22, 2010, 03:01:02 AM »

Hi David,

This is a weird one.

I think the correct sequence after 'feedhold' is to press 'stop' before continuing again by pressing 'start'. Have you tried this and does it still rotate your 4th axis ?

Tweakie.