4 axis rotation question

[MasterCAM Rulez]

i get a signal these --->"ONLY SINGLE AXIS ROTATION IS ALLOWED ANGLE MAYBE INCORRECT."

i want to toolpath the pocket on the "FRONT" CPLANE. this is how i toolpath a 4 axis rotation i'm not sure if i'm do it right.

I press "Alt + C" to open up CVIEW from CHOOKS, from the "CVIEW" scene i pick "CROSS" and "Perpendicular" option.then i press "SELECT" button then i pick the pocket that i want to toolpath. then press display to make sure that the tool is perpendicular to the pocket. the result is "0" Degree (Tplane: 3) so i set my CPLAN: 3. then i pick the pocket i that i want to toolpath. everything look ok on the scene when i backplot it. but when i run the post.

i get a signal these --->"ONLY SINGLE AXIS ROTATION IS ALLOWED AND ANGLE MAYBE INCORRECT".

but when i draw the part CPLANE:TOP,then i

TRANSFORM and rotate the -90 degree. by the this i got no signal when im running the post.

any1 out there know why?

please show me how to modified MPFAN post.

Thanx in advance :

[Michael Reynolds]

Yup, ya gotta tell your post that your using a horizontal machine. I suggest (if you can use mpmaaster post), change the post from a VMC to a horizontal MC). If ya can't use mpmasterpost, you still have to go into mpfanpost and tell it you're using a horizontal MC.

More later...

Mike R.

[MasterCAM Rulez]

but i'm vertical machine

what do i do in these case?

Thank

[cadcam]

Do you mind putting the geo on the FTP & what version are you running sir?

[MasterCAM Rulez]

i found a mistake already.

thanx

[P_Scott]

MasterCAM Rulez,

One thing you should keep in mind is that the Tplane and Cplane #3 is the BACK plane. This plane is the complete opposite of the Front plane. The positive X is going in the opposite direction from the positive X of the Front plane. The error you are getting is because the post is designed to output for 4-axis moves but not 5-axis moves. If you try to use the Back plane, Mcam sees that as another axis of rotation (5th axis) and will not output the code correctly. The easiest way to perform a multi-axis position move you are describing is to Transform-Rotate the toolpath from the Top or Front, using the Origin on the Side View. That's if you want to use the X-axis as your rotary axis. If you are trying to Chain geometry that already exists on the Front plane, you will need to change the plane accordingly in the T/C Plane button of the operation.

[MasterCAM Rulez]

Thanx Peter.