Post for 4th Axis work on Brother Speedio (S700X2)

[abd2021]

HI.

I didn't find any useful solution to post out a working program for 4th Axis work on Brother Speedio.

If I check "Use A Axis" in NCCode it outputs with no errors. But there is nothing in the program which makes the 4th axis rotate. 

Then I edited my post processor "Brother Speedio.cps" to set 

var useMultiAxisFeatures = true; on Line 301.

I get G68.2 feature co-ordinate setting and then G53.1 Co-ordinate indexing (actually moves the 4th axis). But G68.2 is a paid option on Brother and I don't have it.

Is there no way to post out using centre off rotation as origin?

G54.2 (Rotary Fixture Offset) would be another way (IMO). I think this is similar to Dynamic Work Offsets on Haas. But again, this option is a paid one and I don't have it.

[engineguy]

@abd2021 

Can you please upload the file that is causing you a problem, I have just downloaded the latest Brother Speedio Post Processor an it seems to be working OK here on a Test program with simple indexing moves being output as what I consider expected behaviour.

To upload a file got to :-

File > Export > Select f3d format > Save to a location on your computer > Then use the "Attachments" facility below

your reply.

I have attached the .nc file, if you look at the start of each Operation there is an A axis move in the code.

[abd2021]

hi @engineguy ,

I think I understand the post process now. I see G0 A?? where it needs axis rotation.

I made a mistake where I set useMultiAxisFeatures = true; on Line 301. It is not required.

Post processor as is rotates 4th axis when required.

Only limitation I see is that the WCS for the setup needs to be the exact centre of rotation right? And that the model in the CAD environment has to exactly match the physical setup. Dynamic Work Offset would have been good to have but I don't have it as of now.

Is there any way to post out tool paths for multiple work offsets. I am thinking I can have WCS for each angle of the 4th axis.