Caution Using "Extend Contour" In 9.1

[CAM-mando]

Well I really like the Shorten part of the Extend/Shorten Contour option in the lead in / out page. I found out the hard way however that the EXTEND part of this functionality doesnt quite work the way I thought.

 

It creates a linear extention regardless of geometry. So in my case, I was milling an ID in 2 halves (ie. my lead in/out was at 3:00 and 9:00). Using extend countour on the id cuts created an undercut that wasnt noticable until the second half was cut.

 

Hopefully I can save someone else this experience.

 

It would be nice if this function could extrapolate an arc move.

 

Dave teh "Someday I'll learn to program a circle ... duh ! "

 

[ 06-30-2003, 01:31 PM: Message edited by: CAMmando ]

[Rekd™]

Ouchies!

 

Thanks, I will watch out for that!

 

'Rekd teh learn from the misfortune of others

[kkominiarek]

...it's a nice feature.......never tried it on an arc though.......now I know

[F. JAVIER]

I just found this the hard way also (same ID process as you) and came searching to check whether this was reported. Thanks for sharing and sorry I had not read your post prior to this happening.

F. Javier

[Guest CNC Apps Guy 1]

"Ever wonder if your purpose in life was to serve as a warning to others???"

Author Unknown

[mayday]

sorry Commando.

I have seen it during a dry run a while ago. I should have told you bout it

[mayday]

Hey mabe this will make ya feel better

 

one of our better Mazak doall guys thought he would do his own thread milling.

he wound up with a 120mm dia LEFT hand thread.

 

doh : whada ya mean I cant climb cut from the top down