Machsupport Forum

General CNC Chat => Share Your GCode => Topic started by: 21St Century on July 09, 2013, 07:50:05 PM

Title: trying to cut a bushing but....
Post by: 21St Century on July 09, 2013, 07:50:05 PM

So i am trying to mill out a 4" circle  with a 3" circle inside but i cant write a G code to cut a Full circle. this is what i have.

g0 x0 y0
g01 z-1
g02 x1.5 y0 r-1.5

sure could use a little help here

Title: Re: trying to cut a bushing but....
Post by: RICH on July 10, 2013, 06:41:40 AM

I would suggest you use one of the wizards to create the gcode and then study the code to see how it's done.

RICH

Title: Re: trying to cut a bushing but....
Post by: Jammerm on July 10, 2013, 11:21:09 AM

The wizard works very well. I had a little problem with it cutting deeper than I wanted, I can't remember what I had to do to fix it.

Title: Re: trying to cut a bushing but....
Post by: Graham Waterworth on July 25, 2013, 04:00:33 PM

all you need to do is this :-

Rapid to the center + the circle radius + or - the radius of the cutter e.g.

G20 G40
(1/2" dia cutter and 3" hole centered around X0 Y0)
G00 G90 X1.25 (1.5-.25) Y0 Z1.
Z.05
G01 Z-1. F10.
G02 I-1.25
G00 Z1.
(Then a 1/2" cutter and a 4" boss centered around X0 Y0)
G00 X2.25 (2.0+.25) Y0 Z1.
Z.05
G01 Z-1. F10.
G02 I-2.25
G00 Z1.
M30

Title: Re: trying to cut a bushing but....
Post by: tonywads on November 24, 2014, 12:24:21 AM

i see post above has the code but no use to you as it wont cut out a pocket for your bearing to rest in with the 3 inch center now there is a wizard that will do it for you its called circular pocket in wizards i could have done it for you but dont know the depth of bearing or material used