Messages

381

General Mach Discussion / Re: Denford Micromill convert to Mach

« on: February 26, 2011, 12:57:28 PM »

it's pretty easy even with limited electronic experience.

382

General Mach Discussion / Re: Denford Micromill convert to Mach

« on: February 26, 2011, 06:20:59 AM »

Ok, with the most basic conversion you're looking at getting it going for about £50, or with a reasonable opto isolated breakout board you'll be looking at about £80 ish. The Denford control board can be removed easily and you then have a 3 axis drive board that will run directly of a breakout board. It's basically as easy as that, pm me if you require a guide through.

383

General Mach Discussion / Re: Denford Micromill convert to Mach

« on: February 26, 2011, 05:16:41 AM »

there is another option, and that's to just add a breakout board and a analogue spindle board (if not already in the breakout) and keep the Denford drives, steppers and power supply which probably work well.

384

General Mach Discussion / Re: Mach 3 for Lathe

« on: February 18, 2011, 12:55:00 PM »

do you have the mach3 loader icon

385

General Mach Discussion / Re: Denford starturn

« on: February 09, 2011, 07:54:22 PM »

could it be done with two inputs to mach, with a microswitch for tool position one, and eight positions on another micrswitch for the tool positions. You call tool position one first then it knows where it is and can go from there.

is that possible to control

386

General Mach Discussion / Re: Denford starturn

« on: February 09, 2011, 03:10:52 PM »

this may help

http://www.denfordata.com/bb/viewtopic.php?f=43&t=1464&p=10777&hilit=starturn+5#p10777

387

General Mach Discussion / Re: Denford starturn

« on: February 09, 2011, 02:52:40 PM »

yes the motor is powered forward by 24v, and when the relay is off the motor is reversed and supplied with 12v. I believe this 12v may have been lowered on newer models.
The logic side is called greycode, and i'll try to find a better link for info.

388

General Mach Discussion / Re: Denford starturn

« on: February 09, 2011, 02:28:34 PM »

the motor stays powered but at a lower voltage, holding it on the pawl. The optical switches look like they are reflective and are OPB 704 and there are three of them.

389

General Mach Discussion / Re: Denford starturn

« on: February 09, 2011, 01:54:37 PM »

using the denford logic is the better way to guarantee the movement of the toolpost.
The motor is automatically reversed to lock.

390

General Mach Discussion / Re: Denford starturn

« on: February 09, 2011, 07:45:48 AM »

I think I got it but it sort of came across as way over my head. If it is wired to mach3 now on the button I have can this just be told to rotate untill it is at the tool post I want?

Yes, just call the coolant on and use a pause for the time it needs to be on, then call coolant off. So it would be

M8
g04p?
M9

Set the time in place of the ?

M8 starts the toolchange, g04p? sets the time it has to rotate to get past the ratchet, and M9 cancels the toolchange.

When the toolchange is cancelled by the M9 command the toolpost reverses and locks in position, then use multiple commands to move the changer more than one position, or work out the time it takes to move to 2,3 or more changes and enter that time.

There are people working on the code/vb script needed to use the denford control of the toolpost but i don't think anything has appeared yet.