dynamic rest mill bug of mastercam X8

[yestwp]

I have got 2 very similar toolpath setttings of dynamic rest mill.

 

But the mastercam give me a totally different result of them.

 

it confuse me all day long, i think it's a bug of mastercam X8.

 

 

T.mcx-8

t2.mcx-8

[The Cathedral]

Just by looking at the pictures I can tell the picture on the left has an error in your geometry. Maybe an overlap or a gap; either way it's not a closed/ complete arc. Either that or you selected another entity that you can't see. Double check your geometry and selection.

[MadPickinSkills]

For whatever reason, it doesn't like the plane you created. Specifically,  It's failing because of the YUANDIAN2 plane being used in the drilling operation you're using as the rest material definition in the milling operation. If you change the plane to TOP (wcs, tool plane and constr plane) and regenerate the operations it seems fine. I don't know why. 

 

btw, It looks like your using a drilling routing to make clearance for you endmill to enter. If it was me I would use a helix entry. It's probably faster than a drill op and toolchange at the machine. I added an example.

t2b.mcx-8

[rickcact1]

I shut off rest material and it worked. Not sure why it would matter, but t worked.

[ajmer]

you could have used a circle the size of the drill and used that as air region if you wanted.

this way you wouldn't have to use rest machining