Toolpath finishing problem

[Bruce]

Hi all,

 

MC 8.1 mill.

I have a Surface toolpath-finishing problem. The pocket has vertical sides, the base is V shaped and all corners have been blended/filleted

· I have created the pocket using ruled surfaces for the vertical sides

· Flat boundary surfaces for the base

· Fillets/blends for all corners

 

When I rough the pocket with the "rough pocket toolpath" no problem, but when I try to finish the pocket with any of the surface finishing toolpaths I encounter problems.

When the toolpath get to the corner areas of the pockets it machines the inside but also the outside surface. This is not constant at each corner and tends to be only a few tool path lines.

 

Any suggestions on what is causing this.

 

PS- Can you attach a picture file to a topic as a picture can make to problem much clearer.

[c.mercer]

Bruce,

 

Can you upload your part to the FTp site/ I'm sure you will get some valuable feedback there.

[cadcam]

Bruce What version of MC are you using .

that sounds like a good path for Surface Project Blend.(in V9 only)

[BernieT]

Bruce, I find this to be a common problem with vertical surfaces. Apparently they are not 'perfectly' vertical. I almost always do a backplot to see where the tool cuts on the wrong side, then 'Create-Line-Multi' (F8) and draw a tool containment boundry thru the bad places. Go to parameters, check the tool boundry box, and regen. Always works.

 

BerTau

[Bruce]

BerTau,

 

Your method worked fine but I was unable to regen the toolpath to make it work.I had to delete that toolpath opperation and redo it with the boundry containment. It looks fine now.

[BernieT]

Did you go into 'Geometry' and chain the boundry? Then 'regen'?

I forgot to mention that, sorry.

 

BerTau