Arcing In

[Randy Morton @ Clem Industrial]

Hey all,

 

Lets say I have an circle that I want to bore out. I want to have the cutter start at XY Zero (entry point), then move straight down on Y, then arc in, in a G3 motion, cut the bore, arc out and back to XY Zero...

 

How would one accomplish this?

[Guest]

Circle Mill??

 

[billystein]

you could use a lead in/out.

the thing is that when you create a circle the endpoint is to the right at 0 degrees. you could rotate the circle -90 degrees and it will go y-. other wise it should go x+.

if you want to start and finish at the same point then specify it in the lead in/out page.

 

billy

[edmBosto]

I had done a couple undercuts in MC9 years ago.

I had lied as to what the cutter actually was. The undercut I did had an angle in it also, but it worked very well.

First I finished the bore straight down, then another path was probably a 2D contour with my form tool I had to make up (don't retract the tool yet of coarse). Then I did a lead straight back out on the Y, then let the tool retract on the Z.

If I didn't lie to mastercam it would not have allowed me to cut it on the path I had used.

This may be wrong with X2 now but the method I had used was simliar to what I am describing and the results were perfect.

 

Verify didn't show the path correctly since I had used a stepped cutter of coarse.

 

Your circumstance seems somewhat similiar to me the way I understand your post.

This is only a suggestion.

[GoetzInd]

You could just draw exactley what you want, comp off, leadin/out off