4-axis positioning not center of rotation

[H_Cam]

Hello everybody

I got a question about 4-axis hope somebody could shed some lights.  At my work our 4-axis works are programed off a face plate, our programmers been doing this for years and they work great. The face plate is permanently bolted to rotary, it has a flat at A0, XY0 is the bore of that hole for Work offsets (G54-G57) for 4 sided parts, Z0 all tool lengths are 1" Gage block off that flat.  I've tried doing 4-axis this way and it didn't turned right, A0 side  seemed OK, but other sides tool kinda look buried into the work. 

[JParis]

Be best to share a file some someone can take a look at how your toolpaths are all set up

[Leon82]

I always program z from the center. 

 

But you can do it that way, just have to rotate your planes so z stays at the flat height and force all work offset to 0 if you want g54

[H_Cam]

Hello Leon82, thanks for the reply, could you please give more detail about rotating planes? Its not moving WCS origin to the top of FLAT right?

[#Rekd™]

Can you share the file? It will take the guesswork out of this.

[H_Cam]

Here it is #Rekd,  I think i might got it. But let me know if there is a better way to approach it. Thanks

4axis_test_part_with_faceplate.mcam

4axis_test_part_with_faceplate.NC

[#Rekd™]

I had a quick look at it and I would have the model set up so the point of rotation is in the middle of the model. This will make it easier to program and setup on the machine.

[Newbeeee™]

PlanesPlanesPlanes!

Do a search in the main forum for "Horizontal programming" and the preferred methods will come up