[RCARCA]

I in the learning process of G code. what im trying to write is something very simple to you guys, but not for me. I cant seem to get the G02 down, can you help me write this simple rectangle for me? The dementions are 2.740in by 1.760. With the 4 conors rounded.
Thanks bob

[cncadmin]

T0 M06
G00 X0.0000 Y0.0000 Z0.0000
X6.2999 Y4.4187
G01 Z-1.0000 F0.00
G03 X6.4190 Y4.2555 I0.1190 J-0.0382
G01 X7.8361
G03 X7.9551 Y4.4187 I0.0000 J0.1250
G01 X7.2465 Y6.6249
G03 X7.0085 Y6.6249 I-0.1190 J-0.0382
G01 X6.2999 Y4.4187
G00 Z0.0000
M02

[RCARCA]

Thanks So that will do it?

[cncadmin]

OOPs, the above will make a triangle.

[cncadmin]

Here you go -

T0 M06
G00 X0.0000 Y0.0000 Z0.0000
X3.4541 Y5.8512
G01 Z-1.0000 F0.00
X5.9441
G03 X6.0691 Y5.9762 I0.0000 J0.1250
G01 Y7.4862
G03 X5.9441 Y7.6112 I-0.1250 J0.0000
G01 X3.4541
G03 X3.3291 Y7.4862 I0.0000 J-0.1250
G01 Y5.9762
G03 X3.4541 Y5.8512 I0.1250 J0.0000
G00 Z0.0000
M02

[RCARCA]

i may not know much but i new some thing was wrong with that first one.i got one more question,Whats T0 M06 on the first line mean and do. Thank you

[Schulze]

T00 = TOOL STATION NUMBER
M06 = IS PREPATORY COMMAND TO CHANGE TOOLS

how about using the R value instead of I and J

2.00" .25 radius on the corners

T1M6
G0 X-.25 Y-.25 S1500 M3
G43 H1 Z.1 M8
G1 Z-.10 F8.0
Y1.75 F16.0
G2 X.25 Y2.25
G1 X1.75
G2 X2.25 Y1.75 R.25
G1 Y.25
G2 X1.75 Y-.25 R.25
G1 X.25
G2 X-.25 Y.25 R.25

[RCARCA]

Thanks i'll try both.

[RCARCA]

Schulze- I like the R it's simpler. I tested your way out, without and material and it didnt look like a box.It looked like a 2 flat sides with 2 round sides. I could be wrong thoe.What i wanted was 4 sides with all the conors rounded, just a bit. Im am understanding it alot more thansk to you guys. Thanks again.

[Schulze]

keep in mind the R value is only good for arcs less than 180 degrees. Anything over must use I and J

[Schulze]

I goofed. the R value should be .5 not .25

[M@T]

Originally posted by RCARCA
I in the learning process of G code. what im trying to write is something very simple to you guys, but not for me. I cant seem to get the G02 down, can you help me write this simple rectangle for me? The dementions are 2.740in by 1.760. With the 4 conors rounded.
Thanks bob

How much are they rounded by. IE what are the radii of the 4 corners ??

[M@T]

And you will deffo need some kind of cutter compensation if your milling a rectangle pocket. G41 or G42 depending on which way you go round

[RCARCA]

Its not a triangle that guy messed up. The radius is .4. Can you explane what cutter compensation is? thanks

[balsaman]

Cutter comp takes into account the radius of the cutter. If you want a rectangle the size you indicate, the gcode will have to make a smaller (or larger) rectangle because of the cutter diameter. G41 and G42 do that for you. Most of the hobby controller software packages don't support it (yet). All the industrial controllers do.

Eric

[mrainey]

Check out this site - free CNC editor with backplotting. Plus, they sell a book ($39.95) designed to teach CNC programming.


http://www.betatechnical.com/

[abasir]

Easy to use software and good explanations on the G and M codes. Thanks for link

[I.C.O.N.]

Ya, cool editor. Does anyone know of an editor that will backplot macros?

[RCARCA]

I downloaded that program, and delta Cad came up when i downloaded it. Is there something wrong with the file ?

[abasir]

Nope.
I just tried the download link again just now (it a 4MB file).
Try this direct link.
http://www.betatechnical.com/misc/Au...all%20V3.0.exe