Messages

1621

General Mach Discussion / Re: Boxford 160TCL

« on: May 02, 2008, 07:54:23 PM »

I run mine at 2250/min X&Z @ 45Kz the turret runs at 500.

Graham.

1622

G-Code, CAD, and CAM discussions / Re: Are 'I' and 'J' parameters modal?

« on: April 25, 2008, 03:50:33 AM »

Hi Mike,

you need to look at the EdgeCAM post, it will have to be set so that IJK's are not modal, or to output commands of equal values.

If you are stuck send me the post.

Graham.

1623

General Mach Discussion / Re: DC Spindle drive question, What to do with it!

« on: April 13, 2008, 04:43:44 AM »

Hi Jim,

thanks for the information, the job was finished in November 2006, I think its SimonD that needs the info.

Regards

Graham.

1624

G-Code, CAD, and CAM discussions / Re: Help with G-code

« on: April 09, 2008, 12:42:09 PM »

You could turn your main program into a sub program and then write a main program using G52 to step the parts along an axis, something like this :-

NOTE  you can only have a G54 in the main program.

%
O0001 (MAIN PROGRAM)

G54 G00 G90 G43 X0 Y0 Z0 S1000 M3
M98 P0002  (RUN SUB PROGRAM)
G52 X5.       (SHIFT ORIGIN BY 5.)
M98 P0002   (RUN SUB PROGRAM)
G52 X0        (CANCEL SHIFT)
G52 X10.     (SHIFT ORIGIN BY 10.)
M98 P0002
etc........
M30

O0002 (SUB PROGRAM)
G00 X... Y...
(ALL YOUR EXISTING PROGRAM)
G00 X... Y...
M99
%

Graham.

1625

G-Code, CAD, and CAM discussions / Re: Simple G-Code Loop Question

« on: April 04, 2008, 12:10:38 PM »

You could do it like this :-

O0001
G00   X20
M98 P2 L10 (call sub 10 times)
M30

O0002
G00   Z-2.5
G00   Y29
G00   X8
G00   Z-5
G00   Y0
G00   Z0
G00   X0
M99

Graham.

1626

General Mach Discussion / Re: Why do large files cause lost steps?

« on: April 03, 2008, 04:06:53 AM »

If you go to the Diagnostics, page just above the reset button you can turn off the toolpath.

It should help.

Graham.

1627

G-Code, CAD, and CAM discussions / Re: Help with G-code

« on: April 02, 2008, 04:48:54 AM »

Put this on the last line of your code


This will make the machine home them stop

G28 X0 Y0 Z0 (go to axis home)
M30 (end)

Or

This will make the machine loop for ever or until you select optional stop

M1  (optional stop)
M47 (run from start)

Graham.

1628

G-Code, CAD, and CAM discussions / Re: [GCode] Newbie question, Thanks

« on: April 01, 2008, 07:51:54 PM »

Hi,

Machines work from a datum point, this can be set anywhere within its working envelope, you can then work in absolute movements or incremental moves.

Absolute (G90) commands work from the datum point to the commanded position.

Incremental (G91) commands work from the current point and move the commanded amount.

E.G. to move in a 2" square using absolute the code would look like this :-

G20 G40
G00 G90 X0 Y0
G01 X2. F10.
Y-2.
X0
Y0
M30

And the same in incremental :-

G20 G40
G00 G90 X0 Y0
G91
G01 X-2. F10.
Y-2.
X2.
Y2.
M30

I hope this helps.

Graham.

1629

General Mach Discussion / Re: Help!!!!!

« on: April 01, 2008, 07:19:52 PM »

G03X3.2480Y1.0313I-0.1250J0.0000 Q0.1250

Mach dose not support the Q command in G03's

You need to amend the post processor to remove the Q's

Graham.

1630

General Mach Discussion / Re: Feed Rate

« on: April 01, 2008, 07:15:05 PM »

I must agree with Hood, the only safe way is to stop the machine, you can not send it to home as you have no idea what the safe path to home is at any given point.

You could make the spindle switch latch a relay that cuts the power to the spindle and the axis drives.

Graham.