3-D Contor

[RStuart]

I realize this should be really simple. The problem I am having is I have a plain that is at a .69 degree angle with a hub on the left hand side of it. I need to mill around that hub and try to keep the plain angled around the hub. Of course theoretically this can not be done. Although I happen to have a part here in front of me and judging from the tool marks, the programmer before me, did just that. Unfortunately I do not have the luxury of having the old program or MC8 file. I have tried just about everything. Is it possible? Mill level 1!!! Version 8.1.1.

[Flycut]

I'm just a rooky around here but what I would try, if you haven't already, is...

 

Select your contour with plane mask off

and and keep your parameter depth at incremental.

 

HTH, let me know.

[RStuart]

tried that, didn't work. After looking at the existing part more closly, I see to the far left of the hub the taper is not correct front to back, but is side to side with the taper. Which would be fine if I could reproduce that.

[Flycut]

Can you put your file on the FTP site?

[RStuart]

i put a bitmap in the pictures folder titled socom.bmp

[Matt Berube at Ferron Mold]

It seems like a job for mill level 3 but it's hard to tell from the .jpg you posted.

 

Is there any other way you can fixture the part so your angled plane is flat in the machine ? Then just a 2-d contour around the hub ?

[Thad]

RStuart,

 

:Looking at picture: Are you saying that there is a constant .69 degree taper between those 2 chains?

 

If so, I think it's impossible.

 

Edit: With Mill Level 1, maybe a wireframe (or series of wireframe) toolpath(s) will get it done?

 

Thad

[RStuart]

The outside chain is the plane that is at a constant .69 of a degree. The hub is not at an angle. I do not have the luxury of mill level 3, and they have done this before with level one. i will try the wireframe toolpaths. Unfortunately I can not fixture it any other way due to the fact there are hole that have to go in it for screws that have to be straight.

[camguy]

RStuart, does your cad file have surfaces?, if not can they be created easily? You can do a lot with projecting curves-offset with Level 1 mill. If you can email the file to me i'd be happy to take a look at it

 

Steve

[RStuart]

I have tried projecting curves onto surfaces and off-setting contours all I can come up with are cycle times that are way too long to achieve a decent surface finish. Thanks alot though.