4th axis output problem

[Santa Fe]

I'm using a 4th axis fanuc generic post for this program and the part I'm making is a tombstone like. Now the firs face to machine is at 30 deg from the front face and I set it to be G54 in the WCS. The second face to machine is at 90 degres from the front face and I set it to be G55 in the WCS, and so on with the rest of the faces ( 5 total ). Now when I post this file it ouputs G54 B30.0 and for G55 it outputs B90.0

The question is how can I make MC to output the correct G54 B0. for the first face and G55 B0 for the second face and so on with the rest of the faces.

 

 

Seems like MC outputs B with respect to the front face and not B acording to the WCS set up.

 

Note: All X,Y and Z are correct with respect to their selected work offseet #s.

 

[Guest]

If they faces are rotated how can they all be B0?

[Santa Fe]

you set each individual face to be zero on the machine control.

 

G54

X3.4565

Y4.6461

Z2.1651

B30.0 <<< this are machine numbers so what for the machine is B30. my code will show B0 and it will be correct.

 

G55 will be B90.0 machine number and so on. This is a way to do it and to have control over each face in case adjustments are needed.

[bogusmill]

I've had a similar problem. When I want to machine something on a 4th axis (A) if the first cut is at A0 MC doesnt put that in the code. Just starts cutting where ever the rotary head is, then makes an A output for the rest of the cuts.

[crazy^millman]

Jeal how did you set-up the WCS for each face? Did you set the WCS to be new for each fixture offset at each face or did you use only one WCS and then use C-T planes to control the indxing. If so then you need to go back and make sure you have a new WCS for each face of the part and then when you select each one you are getting that Correct WCS and the right hand rule is in effect for how your corrdinates are set-up for each one was well.

 

HTH

[Santa Fe]

Yes I did select a new origen for each of the faces and they come out well in the output, only the angles are wrong.

 

What I find funny is that when you pick a new origen for a specified face of the part or fixture plate MC grabs only ( or probably shows only ) the X,Y and Z location but not the location angles of the face (The B coordinate).

All this under WCS>>view manager>> --Origen (in view coordinates)--

[Santa Fe]

MC is outputing angles based on the location of the machined face with respect to the front face. In other words my right side face instead of been B0 as it should be (per new WCS view C/T planes set to equal) is B90. But all the X,Y and Z output coordinates are correct.

 

[speedybass]

You should try first enabling the 30 degree plane from the planes menu, then go back to planes & choose rotate. Use the dialog ot rotate the xyz vectors to match the way you want them, and then name & save that plane. Go back to your ops manager and select that new plane you created and regen. That should ouput B the way you want it.

[Tim Johnson]

jleal

 

Reread the millman's posting. You have to set the WCS along with setting the c/t planes.