Big problem with a crankshaft

[Blackknight]

Hi everyone !

 

At first, Im so sorry for my english, but I'll try tell you what I mean with this problem...

 

So.. I must project processing a crankshaft in MasterCAM X3... I choose a Lathe with mill toolpaths (I mean 4axis machine).

 

When I'm trying cut material by Crank with 5axis toolpath I'm choosing a Flat Endmill 20mm cutting tool and i have a problem the same in the picture below... The tool is cutting some counterbalance... I ticked this area... I don't know how I can change that, in order to will good and won't cut my counterbalance...

 

I chose this toolpath because in this toolpath I can change plunge cutting (I mean going down by 10mm or different depths.. sorry if this is not understanding.. but I hope You understood that)... In rotary axis (for 4axis) toolpath i cant change that plunge cutting and second big problem with this different toolpath is this, that i can use only BALL TOOL :/... i must have smooth surface on crank...

 

Maybe the collision option will think out my problem ? But I don't know how I must configure this...

 

Of course I have problems with all three crank, but i give you toolpath with one of them.

 

I will be very very very grateful for your help... this is my project so this is very important for me...

 

I send you picture with my problem and .mcx file in mastercam x3... if anyone can change my mcx file and send me with good toolpath that will be great!

 

Thank You very much !

 

http://speedy.sh/ravmQ/CRANKSHAFT.MCX