Messages

391

General Mach Discussion / Re: Mach3 turn atc

« on: September 14, 2012, 11:59:38 AM »

That's bad news. That macro won't work then. You have to move in absolute then. Consider the macro that Hood suggested you at the beginning.

Dan

392

Show"N"Tell ( Your Machines) / Re: Conect 121 lathe retro

« on: September 14, 2012, 09:29:02 AM »

Hood,

And will you just make a new A type spindle nose and permanently attach it to the current spindle? Or will you make new the whole spindle with the nose?

Dan

393

Show"N"Tell ( Your Machines) / Re: Conect 121 lathe retro

« on: September 14, 2012, 02:23:08 AM »

I too don't like the threaded spindle on my 9x20 and had the same problem with the chuck tightening up while I was tuning the servo. Took some serious effort and fair extension to the keys to unthread it. Have also been thinking of making a new spindle for it, but haven't yet decided how I want it. If you have ideas would be interesting.

Dan

394

General Mach Discussion / Re: Mach3 turn atc

« on: September 14, 2012, 02:13:51 AM »

It shouldn't. The moves are incremental.

If you want to reset the A axis after a tool change, just add this line to the end of the macro:

SetOEMDRO 803,0


Dan

395

General Mach Discussion / Re: Mach3 turn atc

« on: September 13, 2012, 01:36:14 PM »

Only reason I can think of is mechanical. Could be that the motor locks the turret so tight that when you command the next tool it loses steps trying to accelerate. Try decreasing the speed and acceleration of the A axis in motor tuning to some real low values ( I would say at least 1/10 of the current values) and see what happens.

Dan

396

General Mach Discussion / Re: Mach3 turn atc

« on: September 13, 2012, 01:13:39 PM »

What happens if you keep it tight and index from tool 1 to 8?

Dan

397

General Mach Discussion / Re: Mach3 turn atc

« on: September 13, 2012, 01:00:16 PM »

I don't quite understand. Can you please be more specific and give more details about what is happening.

Dan

398

General Mach Discussion / Re: Mach3 turn atc

« on: September 13, 2012, 12:04:54 PM »

Movement is incremental so lost steps should have no effect. May be you Steps per Unit setting is marginal. Try increasing it a bit.

Dan

399

General Mach Discussion / Re: Mach3 turn atc

« on: September 11, 2012, 01:33:39 PM »

Do not use the turret angle under Tool Table. You have to play with the Steps/Per in motor tuning till you get one index per one unit of A axis move. Enter in the MDI the following line:

G91 G0 A1

And play with the motor tuning till the above line advances the turret just the right amount. Also, change the reverse move line as I mentioned earlier.

Dan

400

General Mach Discussion / Re: siemens turning software

« on: September 11, 2012, 02:35:21 AM »

As long as you have the right postprocessor that will output Gcode compatible with Mach3 you're fine.

Dan