[zaebis]

I need an example of G code that allows me to repeat the same part but shifting coordinate system over X so that I can use the same subroutine that cuts the part.

Example of pseudo code I have in mind;

( -- Init --- )
G00 G49 G40.1 G17 G80 G50 G90
G20

(--- Set coord system to 0,0 ---)
G??? X0 Y0

(--- execute part cutting ---)
M98 P0002 L1

(--- Set/Shift coord system to 2.7,0 ---)
G??? X2.7 Y0

(--- execute part cutting ---)
M98 P0002 L1


(--- Set/Shift coord system to 5.4,0 ---)
G??? X5.4 Y0

(--- execute part cutting ---)
M98 P0002 L1


(-- Reset coord system back to 0,0 --)
G?? X0 Y0


M5
M9
M30 (-- end of program/rewind -- )

(-- Cutting Subroutine here --)
O0002

G0 ...
G1 ...
G0 ...
G1 ...

(-- Return from sub --)
M99



--------------------------------------------------------

Please help me out with ??? commands. What am I missing here? G52 doesn't seem to work.

[whateg01]

I'm no expert in programming, so this may not be the right way, but I used a G92 to define a new work offset. I haven't mastered the use of subroutines yet. I understand what they do, but implementing them isn't part of my skillset yet.

N100 G54 G0 X2.201 Y1.140
N110 G1 moves...
N120 G0 X0 Y2.517

N190 G92 X0 Y-0.35
N200 G54 G0 X2.201 Y1.140
...


Dave

[mariojl]

There are always more than one way to do it, but to make it simple I would suggest:

Program your subroutine in G91 ( incremental) as in:

N002 G91 G1 X2.3 Y 0 Z-.1 F2. (Beguining of a rectangular 2.3 x 3.2 profile milling)
N003 Y3.2
N004 X-2.3
N005 Y-3.2 (Back to start point)
N006 M99 (Return)

( -- Init --- )
G00 G49 G40.1 G17 G80 G50 G90
G20

(--- Set initial coord to 0,0 ---)
G55 X0 Y0

(--- execute part cutting ---)
M98 P0002 L1

(--- Set coord to 2.7,0 ---)
G90 G55 X2.7 Y0
M98 P0002 L1
G90 G55 X5.4 Y0 ( set coord to 5.4,0 )
M98 P0002 L1
G90 G55 X8.1 Y0
M98 P0002 L1
and so on...
And also You can use variables to set the incremental values of X and Y.
Or program the whole thing in G91
Mario