[kn6398]

I'm having problem with solidcam outputting the correct gcodes.
I built a simple part with solidwork and used solidcam12 to generate the gcodes and simulated it and everything look fine but when I load the gcode to mach3 the toolpath look nothing as I expected. The two holes are way off scale... I can't seem to find out where I could of made the mistake. It seem like when when ever I create the circle it alway off scale, alot bigger than I expected. I'm using the FANUC post processor as the default CNC controller.

Thanks in advance

Here is the pic of the actual part from soldicam.


And here is the tool path when loaded in mach3.


Here is the actaul gcode from solidcam.
DUSTCOVER.TAP.txt

[CNC_USER]

KN6398,

I'm no post expert, but it seems to me that your arc centers (IJ) are set incorrectly for your machine and Mach 3. Some machines uses “relative” and others use “absolute”. I'm betting Brakeman Bob knows for sure (I can't beleive I beat him to posting a reply, I hope he's OK). For my machine post, I worked with the new tech team at SolidCAM. It's true, they don't suck anymore.

S

[kn6398]

CNC_USER,
Your right about the "absulte and relative mode" with your information I looked up the Gcodes summary in Mach3 and found out that Mach3 use G90.1 for absolute and G91.1 for incremental mode to do intepretation of a ARC.


Just to mess around with the Gcode I replaced all my G90 to G90.1(incremental mode) the tool path came out right just like in the drawing.

I guess my next question is how do I set solidcam to use incremental mode so I don't have to manually edit the gcodes everytime I use ARC.

[kn6398]

OK, I figured it out how to change the setting in Mach3 to incremental.

CNC_USER Thanks for your help!!!