Machsupport Forum

G-Code, CAD, and CAM => G-Code, CAD, and CAM discussions => Topic started by: fabhund on July 02, 2013, 03:05:33 PM

Title: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: fabhund on July 02, 2013, 03:05:33 PM

Hi All.
Rather newbie to Mach3, and G-code.

Hand coded below:
Idea is to profile a 50x50 square, using climb mill, and G41 tool offset.
While doing so the toolpath is correct but rounds the corner with same Radius as the cutter.
Have tried:
Change settings to "Exact stop"
Add G61 to the init code
all gives rounded corners ?

If i change tool cutter radius to 0, I get sharp corners.

Code: [Select]

M06 T01 (Tool change #1)
G41 P5 (Left tool compensation, Radius = 5)
M03 s27000 M08 (SPINDLE AND FLOOD ON)
G00 x-5.0 y0.0 z0.0
G01 X0.0 F500.0
Z-1.0
Y50.0
x50.0
Y0.0
X0.0
G00 Z50.0
G40

M00

Where did I go wrong ?
Best Regards, Bo Andersen.

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: ger21 on July 02, 2013, 03:31:17 PM

That's how comp works. It "rolls" around the corner with a radius toolpath, but your part will still have a square corner.

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: fabhund on July 02, 2013, 03:46:31 PM

*Face-palm*
Of course it does. Only checked the tool path, in MACH 3 and I was tricked to perceive it as a rounded corner.
Thanks for a quick response.

Best Regards, Bo Andersen.

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: ger21 on July 02, 2013, 08:11:53 PM

Quote from: fabhund on July 02, 2013, 03:46:31 PM

*Face-palm*

I'm picturing the kid in the cell phone commercial explaining what  happens to a slow turtle in the road. ;)

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: Overloaded on July 03, 2013, 07:41:18 AM

 :D :D :D

Thanks ,
 ;D

"It's not complicated ..... faster is better."

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: Ya-Nvr-No on July 03, 2013, 05:22:39 PM

Quote from: Overloaded on July 03, 2013, 07:41:18 AM

"It's not complicated ..... faster is better."

women would disagree with that.

you guys watch too much TV, now get back to work.

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: budman68 on July 05, 2013, 04:47:25 AM

Quote from: Ya-Nvr-No on July 03, 2013, 05:22:39 PM

women would disagree with that.

you guys watch too much TV, now get back to work.

Apparently you haven't been with many women as they're not robots and they surely don't act all the same  ;)

Dave

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: Ya-Nvr-No on July 05, 2013, 05:30:44 AM

would that be the Budweiser and last call women?

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: budman68 on July 05, 2013, 05:43:48 AM

So you have been there  :D

Dave

Title: Re: G41 and profiling gives rounded corners with "Exact stop" ?
Post by: Tweakie.CNC on July 05, 2013, 08:39:40 AM

 ;D ;D ;D

Tweakie.