c axis contour

[jdc]

When I make a C axis contour toolpath and try to backplot, it shows the endmill cutting the corners off. Is this a backplot issue or is this a operator issue.

[Goldorak]

back plot dont rotate the tool in rapid , it just cut into the part in a strait line

 

verify works a bit better with c-axis

[jdc]

OK, I cut the part on the machine and it looks just like the backplot. Like a hexagon balloon.

Anyone have any ideas on just what I'm doing or not doing to cause this.

[Randy Morton @ Clem Industrial]

JDC,

 

I drew up a quick hex, on the right plane and ISO view (not that the view is important). I selected Mill, Contour, tool, depth, all the normal stuff. And in Rotary Axis Control selected CAxis. It verifys & backplots correctly around the outside of the hex.

 

And just from experience and using this, at least generally, it works perfectly. I am not sure where your problem would lie except to ask if you are milling it from the correct TC Plane?

[jdc]

I am using the C axis contour Tplane:TOP

[Randy Morton @ Clem Industrial]

I dont know if it will make a difference or not, but I would try drawing your Hex in the RIGHT plane and then contouring from there...

[jdc]

Sorry maybe I should say that I am trying to cut a hex on the lathe.

[Rob Dusenbury CAD/CAM CONSULTING]

Try using Face Contour instead of C axis contour.

[jdc]

I am using a face contour path for a square on the end of the partand it works fine but I need to move toward the chuck and cut a Hex. Need to do it with a radial cutter.

[jdc]

The center of the endmill backplots right on the tool path but the leading and trailing edge cuts the corners off. what do I need to do to stop this?

[Randy Morton @ Clem Industrial]

JDC,

 

I was cutting this on a lathe Machine Def as well and as I said, didnt see any issue.

 

Since you say you are using the 'face contour' toolpath, I am just guessing that this is on the face of your part. I personally hate Mastercam's "CAxis" toolpaths. They dont seem to work very well, I have found. As a work around I use Mill/Contour instead.

 

This works for me very well and I have never had the issue you speak of doing it this way. I also always use the 'RIGHT' TC Plane to do my face contours on our live tooling lathes and Integrex machines, again without any problems.

 

If you want or are able you can send your file my way and I can try to help you out if possible, or send you and example of what it is that I am speaking of.

 

HTH

[jdc]

Got it now. Thanks

[Philcott]

How about typing up your solution so others can learn from it?

[jdc]

I did this as Randy said.