Messages

1961

G-Code, CAD, and CAM discussions / Re: Cutter Compensation code

« on: August 16, 2007, 03:21:30 AM »

Why not run sheetcam again and post the code out for a 3mm cutter?

Or try it like this :-

N0000 (Combined L & R Fig12 Targets with offset shift)
N0010 (Post processor: Mach2.post)
N0020 (Date: 20/04/2007)
N0030 G21 (Units: Metric)
N0040 G40 G90
N0050 G43 F1
N0060 (Part: ~$Fig12RHmod001)
N0070 (Process: Outside offset 0, Mill/Router, 5 mm diameter, 5 mm Deep)
N0090 M06 T1  (Mill/Router, 5 mm diameter)
N0120 M03 S500
N0125 G00 Z40
N0130 X-325.5000 Y225.
N0150 G00 Z0.0000
N0160 Z-15.0000
N0170 G01 G42 D2 Y231.
X122.0979 F1500 etc etc . . .

Graham.

1962

G-Code, CAD, and CAM discussions / Re: Stitching G-Code Together

« on: August 12, 2007, 05:57:45 PM »

There is no reason why you could not use Sub programs,  all your subs would be the programs you use now.  You would have a new main program that calls the subs in the right sequence.

Main (bridge type 1)

M98 P0002 (CALL SUB PROGRAM NUMBER 2)
M98 P0004
M98 P0019
M98 P0005
Etc.
M30

Graham.

1963

G-Code, CAD, and CAM discussions / Re: where to start

« on: August 12, 2007, 12:28:47 PM »

Buying or building a cutting tool is only the start of many years of spending sometimes substantial amount of cash.

From my experience the best way to learn anything is to have a project,  that way you can focus on getting one thing right at a time. Set yourself a task, maybe you are into clocks, loco's, boats, aircraft, what ever.  I think its time to decide what you are going to make on the machine, then gear yourself up to achieve this goal.

Think about it this way :-

What am I going to make?

What materials will I be cutting?

What tools will I need?

Do I need 2D, or 3D code generation?

How am I going to hold the work pieces?

Do I need special measuring tools?

Once you know the answers to these questions, the next list of questions will be automatic and a path will develop

At the end of the day the G-code part is the last bit you need to worry about, and we can help you with that bit too.

Graham.
 

1964

G-Code, CAD, and CAM discussions / Re: G code for a circle

« on: August 10, 2007, 12:45:22 PM »

Try this :-

G20 G40
G00 G90 X0 Y0 S1000 M3
Z.05 M8
G01 Z-.05 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.1 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.15 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.2 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.25 F2.
X.0935
G03 I-.0935
G01 X0
G01 Z-.3 F2.
X.0935
G03 I-.0935
G01 X0
G00Z1.
M30

Graham.

1965

G-Code, CAD, and CAM discussions / Re: Prefix in edgecam

« on: August 07, 2007, 04:53:51 PM »

Use a Fanuc 6 post, it is very close to mach3.

Graham.

1966

General Mach Discussion / Re: loosing steps in one direction

« on: August 07, 2007, 04:24:53 PM »

Hi Mick,

from the test you have done I would say that it is NOT a machine error more a driving error, try a different cable and/or breakout board.

Graham.

1967

General Mach Discussion / Re: HELP pleeeeeese Z axis problem !!!!

« on: August 07, 2007, 03:43:42 AM »

Have you had the Z axis in bits to see if there is a jamming condition, if I remember correctly these machines use plain bush slides, is one contaminated?

Graham.

1968

General Mach Discussion / Re: HELP pleeeeeese Z axis problem !!!!

« on: August 06, 2007, 05:06:06 PM »

Hi,

I think you should halve the velocity and double the acceleration figures for all the axis and let it run a very long program, see if it faults,  it may be right on the limit.

Graham.

1969

General Mach Discussion / Re: loosing steps in one direction

« on: August 06, 2007, 04:48:35 PM »

Hi Mick,

if you reset your drivers to 400 steps/rev and retune mach3 to match, then run your tests again are the errors 4 times greater?

Graham.

1970

G-Code, CAD, and CAM discussions / Re: Prefix in edgecam

« on: August 06, 2007, 04:37:53 PM »

Mach3 uses .TAP extensions.

Graham.