4 axis simultaneous motion only

[Guess_who]

our Mori NV-5000 is a 5th axis trunion, but only 4 axis’s can move at any one time. What I was wondering is, is there a way of telling the post that only four axis’s can move at any one time?

 

I'm really just looking for a yes or no answer. I don't want to waste a bunch of time looking how to do this, when it's not possible, or if it would take a bunch of post re-writing.

 

Thanks all.

[AlbertZini]

For the multiaxis - use only 4 axis for programming in Mastercam.

If you do this in the postprocessor, the part geometry will be wrong

In the postprocessor can do this only for indexing

[MIL-TFP-41]

In most if not all 5 axis toolpaths you have the option of outputting in 4 axis via the toolpath parameters. Additionally, you can use rotary limits to limit the motion to 4 axis moves only.

[Guess_who]

Yeah, that makes sense. That's what we've been doing.

 

Thanks

[Guess_who]

OK, so now my issue is that I am limited to the Y+ direction, and when I set the Travel limits in the machine definition and in the post, it's just ignored and moves to Y+5.0 anyway. Why is this not forcing my -B- axis to reposition to keep the move inside it's travel limits?

 

 

Neither one of those methods prevent the -Y- axis from moving past it's defined limits.

 

What am I missing

 

 

 

[Colin Gilchrist]

Hi Ray,

 

The travel limits inside the Machine Definition file are not "hooked up" to the Post Processor. The Generic Fanuc 5X Mill post from CNC Software only has Rotary travel limits. There is no "linear" limit that can be set to restrict output.

 

The best you are going to get is the 'mi10$' switch in the toolpath that can temporarily restrict the secondary rotary axis. So for example, you could set it to only allow negative rotation on the secondary, and that would force the rotary to the negative side.

[Guess_who]

OK Colin, that's all I need to know.

 

I figured I'd asked the question before hunting around for hours looking for an answer that doesn't exist.

 

As always you guys saved me tons of time and stress

 

Thanks