Remachining settings question

[SScnc]

Hi,

With X3 I'm having some problems with remachining. I do a pocket with a .125 em then a remachining of it using a .0469 em and it make allot of wasted moves machining air ! By air I mean areas that the .125 already removed all material.

It also leaves some material it should remove.

In the pocket dialog box I select remachining and make sure that "stock to leave" is "0". When I click the Remachining button... below the pocket type drop down it opens with the following checked:

Compute remaining stock from:
The previous operation

Clearance is set at 50%

Apply entry/exit curves to rough passes
Display stock

Are these the best settings to use ? It seems to me that it would do a better job and take less time to just do another pocket with the smaller endmill even though it will be cutting a lot of air.

I must be doing something wrong with the remachining op but I don't know what and need some advice if you will.

Thanks,

Steve

[Superman]

Hi Steve,
Remachining paths can be testy at the best of times.

Your method is sound, but could be taken a little further.

select all the operations before this re-machining op. and run it thru verify.
create an STL file of the stock while still in verify.
take this file and use it in the remachining operation
- use STL, ( not previous operation or tool dia. )

What you end up with is the same sort of paths as before but any paths that cut nothing are deleted.

This method is good for other strategies that can have a CAD button on the drive surfaces dialog ( ie surfacing and HSM )

Steve

[SScnc]

Thanks Steve,

I understand how to create the STL but I don't see a choice for "use STL" in the remachining box.

[cnc-king]

click on the advanced radio button and set your remachining tolerance. i normally have mine set between .001 to .005 some times i have to make it even smaller

[Superman]

Apologies, you are in the 2D_contour operation.
The paths are calculated from "Top of Stock" to "Depth" range only, and yes, it gives a lot of air cuts

Try using a "surface rough restmill", or the "HSM"-Rough-Rest Roughing
They have the ability to adjust paths fron remaining stock

Steve