4th axis problems

[Robert Ouellette]

i am having problems with some simple 4th axis positioning programs. i can post A0, A90, A180 with out problems but A270, or back face when i post it out i get not A rotation and the error i get is "only single axis rotaion is allowed". i am using mc9.1 and a modified mpmaster post for a FULLAND mill with a MELDAS control. i get no errors posting front and bottom but it is the back that is not working. please help. i have managed to cheat and get the job programed but it is frustrating to edit the code every time i repost an op.

 

bob

[dprovost71]

Check all your tool planes again and make sure they're in the correct relation to the rotating axis. I sounds like your "back" its flipped the wrong way.

[ajmer]

dont use the back or bottom toolplanes. make new planes with new geometry with the x axis pointing the right direction. back and bottom have the x pointing the opposite direction

[Robert Ouellette]

how should the axis be in relation to the back? could you post a quick file to show me? my part is 3" x 3" x 24" long held on A axis along X. i face mill, drill and thread mill npt olong the 4 sides. not hard. in MC it back plots and verifies great. so i was thinking it was my post. (the person who made the post for us was not a pro and i had to fix it when he was done. ) in MC it looks good from all views.

 

bob

[John Summers]

For all toolplanes, start with TOP view, and rotate +Y. Rotations are incremental, so if you start in the top view every time, you'll know where you end up. Also, if you rotate only about Y, you know that there is no X rotation.

[excel-lent]

Has anyone had problems with planes changing when you change your views?

[robh]

excel..check your settings>config>cad settings>and there are boxes to uncheck if you don't want "update of c plane and t plane when you change your g view", also "reset c plane to top in iso view" is controlled there..hth

[excel-lent]

Thanks guys. I deselected the boxes and have been trying that out.