Stock collision while removing stock - should I ignore?

[Metals and materials]

So in a dynamic OptiRoughing, to remove stock from inside the part, while removing the stock, the endmill is colliding with stock! (In mastercam verification), which anyways have to be removed (as it is stock). Should I just ignore that?

I have 0.2362" ball endmill with flute length of .75 and I am using about .36 inches of flute length. with radial stepover of 20% as it is 4 flute. My plunge parameter is helix. 

[Jake L]

Shooting in the dark without a file...

Usually I'll see this collision when the tool hits the stock while plunging in preparation for the entry motion.

Try increasing z clearance on the entry motion and see if that fixes it.

[AHarrison1]

3 minutes ago, Jake L said:

Shooting in the dark without a file...

 

^^^this^^^ ..preach it to the people..

[gcode]

are the collisions happening on flat surfaces?

do you have micro lift enabled?

a file was posted here a couple of months ago with collisions using dynamic mill and a ball endmill

what was happening was that the ball endmill was leaving cusps on horizontal surfaces

and the endmill was rapiding through the crests of the cusps during backfeed motion

enabling microlift with a lift value higher than the cusps, eliminated this issue. 

 

 

 

[Metals and materials]

 

5 hours ago, Jake L said:

Shooting in the dark without a file...

I didnt realize, but here are they...

 

4 hours ago, gcode said:

what was happening was that the ball endmill was leaving cusps on horizontal surfaces

this is what hapeening, though not all the times. 

Attaching couple pictures here. Sometimes, it's on the surface, sometimes, it's on the wall....

[Metals and materials]

THe last second picture above is while doing equal scallop for finishing the floor

 

5 hours ago, gcode said:

enabling microlift with a lift value higher than the cusps, eliminated this issue. 

It did went away. what to do for equal scallop. It does not have microlift (last second pic)