B-axis rotation - shortest route

[cncguy]

We have a Mazak 630 horizontal machining center and the B-axis always rotates CW, when I would like it to rotate CCW sometime (to take the shortest route). The programmer before me said he thought it was a parameter change, but wasn't sure and can't find the parameter book. (It sure sounds like it would be a parameter change).

Anyway, I was wondering if there could be a macro written for this. I'm a rookie when it comes to writing macros so was looking for some help. It a Mazak M32+ control.

Thanks for any help.

[Stevo]

I am not up on the Mazak programming lingo so I will not be able to help you with code. However a macro will not give you what you want. If you wanted to do shortest distance without the parameter change then you would have to program a B- or B+ from the position you are at or from B0.

Now the machines that I am familiar with will have a parameter setting for this which has already been pointed out to you. I would recommend finding the parameter manual online or by other means and simply setting the parameter and no additional programing is required. I have done this for all the rotary axis machines that I have setup.

In Fanuc controls it is determined by bit RINC which will move the rotary axis in the direction that is the least movement. I have also found setting bit RDAx for the rollover function. This way the control will not go past 360deg. Once it reaches 360 it will roll back over to 0 instead of adding to the 360deg.

Stevo

[cncguy]

Yes, I want it to roll back over to 0 as well instead of adding to 360 degrees...

[Stevo]

I do not have any Mazak manuals so you will have to see if you can get your hands on one or if another member happens to know the parameter they can post it.

Stevo