rotary in vmc

[Mark C]

Good morning all,

My problem is: I need to drill and tap a hole in a .63 dia part in an A axis inn a Haas vmc at 0 deg and do some engraving centered at what would be minus 90 deg. The engraving comes out centered at the 0 deg area. I have tried changing tool planes (top and front) and doing the engraving then transform/rotate the toolpath + and - 90 deg. Nothing. The a axis is about +50 deg to about -50 deg when I need it at -40 t0 -140. Bucause of the location of the part in the a axis I need to start it at 0 where the hole is

Sorry for the long winded post

 

Thanks in advance

 

Oh yeah V8.1.1 MPMaster post

 

[ 12-18-2002, 11:11 AM: Message edited by: Mark C ]

[Allan Brown]

If you are using rotary substitution style toolpaths, the issue may be related to the location of your unrolled geometry, which you may need to shift +/- in Y by Pi*D/4. The CW vs. CCW selection may also factor in.

 

Placing your file on cadcam's FTP may help us get to the bottom of this.

[Mark C]

Thanks for your reply Dave

I put it on the FTP site in the mc8 folder. It is called Rotary.

I did remove the part# cuz of our non-disclosure agreement with this company, but there are still 3 lines of text there.

 

Thanks again

[MACHINEMASTERG]

how about doing the engraving under a differnt work offset?? maybe g56 and in the offset page tell it a axis is-90. then it will give you code as if it is at a0 but you told it in the offset page to be at a-90 ????

[Mark C]

Yeah Iguess I could try a different offset.

Or I could even try drilling the hole at +90 deg and engrave at the zero area, but the setup will more difficult (ie: more chances to make a mistake)

MasterCam should do what I want it to. Sometimes I just get kinda anal about letting the technology do the work

[ROB]

have you try using a different level for

the geometry only?

hope this helps!

[cam-eleon]

You could put the lettering on a different layer, change colours and use xform, roll, to place the geo on OD. Then go into the side view and rotate the rolled letters about the origin to place them in the exact spot-- ultimate control. Then contour, window rolled letters, axis sub, unroll.

[MasterNick]

Hi, I looked at your file, and saved a file in the ftp as rotoryrev1. Is this what you wanted? I rotated the engraving to be able to see it in the Front Gview. Then I changed the t/c planes to Front View in your operations. Check it out. I hope it helps.

Nick

[MasterNick]

sorry, I reread your initial post, I see that you've done that.

[Allan Brown]

Looking at the file, I think the answer was in my first reply. Xform, Translate, Rectang, all of your engraving text by Y(3.141592654*.63/4). That will shift the angles by 90 deg, where the full 360 circumference is Pi*D (so 90 deg is Pi*D*(90/360).

 

The posted angles in my post look fine. If you your rotary sign has been flipped, add a negative sign to your translate distance.

 

[ 01-08-2003, 04:36 PM: Message edited by: Dave Thomson ]

[Mark C]

Thank you Dave,

I didn't understand your first post, but now I understand whats going on. I had tried all sorts of things and no luck. I will try it later

 

Thanks again

 

Mark Coates