Toolpath Question

[Namliek_J@TheeCircle™]

I have a part that I rough machined and sent out for processing and now have to finish machine.

 

There is a bore on the part that is .674 diameter and I have about .006 per side left on the bore dimension. I want to to machine the pocket by taking my tool to depth, and then spiraling inside to out with a .0005 step over.

 

I try a pocket, true spiral toolpath, but it starts at the center, and 90% of the toolpath is cutting air.

 

Is there a way to set this up? To tell it to start .01 off the wall, and spiral out from there? Something maybe like a remachining toolpath, that will start the spiral where the stock is remaining and eliminate cutting that is unneccessary?

[cobra95kev]

Try Circlemill toolpath with roughing passes turned on.

 

[Namliek_J@TheeCircle™]

Tried it, gives me the same out put as Pocket - True Spiral. There is no input for how much stock is left on stock.

[Pat-TGM]

J.

 

Offset your circle .01" + Dia of tool. Use pocket toolpath and pick two circles

 

HTH

[Namliek_J@TheeCircle™]

That wont create a toolpath becuase you are telling it that you want to pocket something and leave a boss, and the tool diameter will wipe the boos out.

 

the only way i can get exactly what i want is to create spirals.

[Pat-TGM]

J,

 

Can you try it again.

 

Tool Dia = .250"

Offset amount .260" from your circle.

 

Use pocket/true spiral/ inside to out with a .0005 step over.

 

It is working fine here. Unless you want starting at center of hole

[MLS]

I was just playing with this. If you use surface rough pocket and create a surface with the pocket you want trimmed out of the middle, then create a surface in the center that you do not want to tool to cut, then spiral inside to out it will work with true spiral.

 

You will have to play with the inside surface size to dictate the starting point on the tool.

 

HTH

[#Rekd™]

Hi,

 

Can you use circle mill and create a point instead of going off the geometry and enter the diameter of the bore and post with wear. The tool will plunge in the center. You can play with the multi pass and overlap?

 

John

[GoetzInd]

You can always draw exactly what you want and contour it with comp turned off. Perhaps taking that true spiral tool path, and saving it as geo. Primitive I know, but you will get what your looking for.

 

Mike

[Span]

You can use either the circle mill with rough passes or spiral pocket and TRIM the toolpath.

[Ocean Lacky™]

did you try Helix Bore?