Machining small steps.

[pcsimp]

I noticed on my first project on the Bridgeport Series2 Boss9 that it would hesitate when it machined tool paths that were made up of short steps instead of machining in a smooth continous motion. Would turning off deeceleration smooth up the motion.

Thanks
Alan

[machintek]

Are you using cutter comp? This forces the control to look 5 steps ahead. It may help. I owned a BOSS 9 back in 1996 but cannot remember how I overcame the hesitation. It was not that bad for me. There is a G code that changes the feedrate automatically as the cutter goes around the inside or outside of a radius. It is used to keep a constant chipload on the cutter. You could try playing with that also.
If you are doing 3D milling with a program generated by a CAM system, then your steps are very small, the programs are long and the processing speed of a control designed in the early 80's may leave a lot to be desired.

George

[pcsimp]

The small steps are coming out of Visual Mill. I have no idea why it programmed steps into the tool path. It was a straight line only at an angle. The Visual Mill people did not see any problem. I think they are used to more modern controllers like you said.

I have been machining with a ShopBot for 3+ years. This is my first foray into the world of Gcode.

Alan

[DAB_Design]

If it is a straight line, you could just edit out all the lines except the starting point and the end point. Guess it would be a bit redundant to have to do that to every program though.

Quick and simple fix though.