Need help with 4 axis rotary toolpath

[Mgray]

I can't get a smooth rotation with this toolpath. I am using a mazak 510 with a rotary table. The rotation is around the x axis. When the rotary table spins it is just really jerky in some places but in others it is smoother. I would use a flowline toolpath but I can't get it to do what I want.

 

I am using MC X4. Thanks in advance for any help!

[John Morris]

To help diagnose the problem try putting a 4th axis unclamp (M46 on my old Mazak) just before you start the rotary motion and re-clamp (M47) when it's finished. If this helps then what's happening is every line that does not contain and A or B it will try to re-clamp the 4th. If it does not help it may be limitation of the control to read blocks per second, in other words the code movements are show short it requires a large amount of code to move a short distance and the machine simply cannot process the data as fast as the machine is capable of moving. A very simple test of this theory is to override the feed down and see if it smooths out at any point.

[Jayson Kramer]

What path are you using?

[Mgray]

I am using a rotary 4-Axis toolpath.

[Tyler Robertson]

if you can post the part I can check it out,

 

I think John's right on the money

 

 

you may have to use point generator to give it more code

[Mgray]

I can send you the program posted out, just let me know where to send it. I would appreciate the help.

[Glenn Bouman]

Thanks for sharing the advice on the M46 command John, I had the same problem with a customer with a newer Nexus with a Matrix control with the same problem, I added M46 and it ran smooth.