Messages

1421

General Mach Discussion / Re: What is your trade?

« on: February 28, 2009, 12:27:25 PM »

I run a CNC machining facility.

Not too big 15 CNC's from company's like Mori Seiki(3), OKK(3), Victor, Akebono(2), Okuma, Femco, Bridgeport, Focus(3) and as any true engineering company a manual Bridgeport turret mill and a Colchester lathe.

I/we do OK, I could do a lot better if common sense had not been bread out of the human race 

Graham

1422

General Mach Discussion / Re: circles are not round - need advice

« on: February 28, 2009, 12:02:33 PM »

Circles that are not round are caused by backlash or a loose gibb strip or a  loose ballscrew or some other part that is moving that should not be.

Mach outputs perfect circles so look at your machine for the problem.

Graham

1423

General Mach Discussion / Re: Anybody else having trouble with the editing on the Forum

« on: February 28, 2009, 05:29:25 AM »

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1424

General Mach Discussion / Re: newbie confused

« on: February 27, 2009, 11:05:52 AM »

What do you have your stepper drivers set to full, 1/2, 1/4, 1/8 step or what?

Is the motor 1:1 to the leadscrew?

Graham

1425

General Mach Discussion / Re: Image Editor Software For Creating Transparent Buttons?

« on: February 26, 2009, 12:08:14 PM »

I use RealDraw v4.0

Graham

1426

General Mach Discussion / Re: newbie confused

« on: February 23, 2009, 04:25:29 PM »

OK, so what is your machine doing wrong, the tool path looks fine.

Graham

1427

General Mach Discussion / Re: newbie confused

« on: February 23, 2009, 04:05:21 PM »

It looks fine to me :-

1428

General Mach Discussion / Re: newbie confused

« on: February 23, 2009, 04:00:21 PM »

We use this :-

Screenhunter 5.0

http://www.wisdom-soft.com/downloads/setupscreenhunterfree.exe

Graham

1429

General Mach Discussion / Re: newbie confused

« on: February 23, 2009, 03:27:14 PM »

Simulation and real time cutting should be the same.

Post a picture of the screen shot and also your code that way we can work out what your problem is.

It could be just a setting in your config like Inc arcs.

Graham

1430

General Mach Discussion / Re: Mach Turn Feed Per Revolution

« on: February 23, 2009, 03:19:26 PM »

If you are running in G94 feed mode then no matter what you do to the spindle speed the feed will not change when in G97 spindle mode.

If you run in G95 feed mode and G96 spindle mode then the feed and speed are locked together and the feed rate increases/decreases as the spindle speed rises and falls.

In G97 spindle mode with a feed of 1 unit per minute (G94) and a spindle speed of 1000 the feed rate is 1/1000 = .001/rev if you then drop the spindle speed to 500 rpm then the feed is still 1 unit per minute but the feed rate is .002/rev

G94 is feed per minute e.g. F1.0 = 1"  or 1 mm per minute, axis will move this distance in 1 minute.

G95 is feed per spindle revolution  e.g. F.01 = .010" or .01mm feed per rev

G96 is constant surface speed e.g. S100 = 100 feet or 100 metres/min  spindle speed, speed increases as cut diameter gets smaller.

G97 is fixed speed e.g. S1000 = 1000 revs per minute.

Graham