Helix Bore vs Ramp Toolpath

[JAMES GABEL]

I have been programming holes with ramp toolpath for a long time now and have been trying helix bore lately. I am having a problem with cutter comp. with helix bore. I have to bring the size in by reposting.

 

I like helix bore because it gives you a flat bottom, ramp has to even to give a flat bottom. I do not like to have to calculate the ramp to make it give a flat bottom.

 

Does anyone know why I am having a problem with cutter comp on helix bore?

[[email protected]]

I dont know why you are having trouble with helix, but with ramp there is a box to check to "Make pass at final depth" check it and you will get a flat bottom

 

HTH

[Tony35]

are you using wear comp it sounds like you are using computer for comp

 

+1 murraymold

 

HTH

[Hardmill]

Jimmy dont you have "make pass at final depth"

checked in the ramp parameters ??

 

 

PEACE

[Cad-Camr]

If I remember correctly you can check start at center and perpendicular entry to get comp to work. I typically do 2 seperate cuts 1 to rough without comp and the finish pass as mentioned above. Hope that helps

[gms1]

Only thing I hate with Helix Bore is the fact you have no control of where that toolpath ends. Using Helix bore to cut a 20" dia hole. and watching the dumb thing return to center

[Mr. Wizzard]

Your bore size may be off, depending on your geometry selection techique. If you pick the center point, you have to enter a diameter in the toolpath parameters page.

If you select "entity" and select the arc or circle that defines the bore, Mastercam sets the diameter for you. You can then adjust the size with the "x/y stock to leave" dialogue box.

Good Luck!

[JAMES GABEL]

On ramp I do have the make pass at final depth checked, but it does not give a flat bottom. You have to make it so the ramp depth per rotation can divide evenly in the distance from the top of stock to the final depth. That is the only way it gives you a flat bottom with ramp.

 

I hope I have been doing something wrong for all this time. I feel stupid asking a question on something as easy as a contour toolpath.

 

I am also using wear for my cutter comp.

 

It is the simple little things that give you a headache sometimes.