Need Help!- V22 Facing ?'s

[bink]

I have a part that is "u" shaped that I need to take about .03 off the top of. I want my cutter path to follow the "u" shape of the part. When i use the "mill 2 axis facing" command, it just wants to mill straight across the part as if it were square. Is there another way to do this, or am i just doing something wrong?

Thanks

Bink

[BurrMan]

When you say U shaped do you mean it is concave in the Z direction? Or are you wanting the facing to be constrained by a boudry instead of just do a full facing patern around an object

[bink]

part is flat on the table. yeah, i just want the face op to be restricted to the u shape boundary. was thinking i could draw a box around my part and say that my u shape is a pocket, maybe trick it that way.....

[moldmker]

Here's 2 ways:

First is a Pocket op with zero depth.

Second is Profile with zero depth and large stock remaining number (multi passes) and right angle leadin long enough to plunge down off of part.

I recall reading that boundaries in 2d facing was in the works for later release.

moldmker

[bink]

Thanks, the second way you described is what i am looking for. what did you use in each of the fields to get that tool path, i am pluggin in something wrong. havent been able to quite get it.

[ryansuperbee]

Hi Bink, I have bobcad V22. It sounds like you don't want to face it at all. Being you want to take .03 off the top of a shape sounds more like a "pocket" operation. Have you thought about doing it like this yet?

[moldmker]

Originally Posted by bink Thanks, the second way you described is what i am looking for. what did you use in each of the fields to get that tool path, i am pluggin in something wrong. havent been able to quite get it.

These values are based on the leg of the U being 1" wide.

I think Bobcad kinda screwed up the naming of the Stock remaining and Spring passes, but that's my opinion. If you take the Stock and divide by Spring pass, that's your approx. stepover amount.

The neg. Side allowance lets the tool overlap the edge of the part.

Play around with the numbers and recompute and you'll see how they work.

Only use the Rough tool, leave the Finish tool at 0 dia..

Good luck,
moldmker

[bink]

Thanks!