Anyone experience this

[mboydraska]

I was running a program with 3 tool changes. (CAM used VisualMill), everything was running great until the last tool change. Start cutting when cut speed tripled, cut speed set at 50ipm. Has anyone experience change of speeds?

Thanks,
Mike

[Hood]

Did your code have the F50 in it? Did you possibly accidently increase the FRO?
Hood

[mboydraska]

The code had the speed and feed that I had set for that specific tool. I ran another program generated from VisualMill again the tool ran faster than it was programmed to do. Never had problems with other CAM software. I will contact Mecsoft about this issue.

Thanks for the reply,
Mike

[RICH]

The  gcode provides the feedrate value in the program. Have a look at the  gcode and see where they are applied.
RICH
 

[mboydraska]

I don't think it is a Mach problem with the speed changing. It has to do with VisualMill, I did not get answers from them, it only changes the feed and speeds on the final MOps which is perimeter pass. Perimeter pass speed is set at 50.0ipm but prior to that it has 100ipm but I removed that, did not help was cutting at full speed (1000ipm)

[rrc1962]

If it's cutting at full speed (the speed you have set in motor tuning), then it sounds like you have a rapid move (G0) were a feedrate move (G1) should be.  Those commands are modal, so if you make a rapid move with the G0 word, then make a feedrate move, you have to use the G1 word.

Post some of the offending G-Code.  Sounds like VM post issue.

[mboydraska]

That was it, G0 rapid moves,  every time I would generate code from VisualMill I would do all MOps in one code with tool changes. My machine does not have ATC but VM allows different tools in one code with tool change position. So when it comes to do the very last machining operation, perimeter, it will generate G0 rather than G1. Should have picked up on this been doing this kind of work for quite a few years - getting too relaxed with it.

Thanks,
Mike