Tool Change

[cdb0ewm]

I have an M3. I was wondering the proper method to do a tool change in the middle of a job, i.e., going from an end mill to a ball mill and keep the x, y, and z locations straight.

[rowiac]

This is how I do it:

First of all, make sure you have separate gcode files for each tool. Using a GRBL post-processor in your CAM software pretty much forces that, but I mention it just to be sure. After running the gcode for your first tool, typically the machine will go back to X=0, Y=0 and Z will go to a clearance height set in your gcode, say +10mm or +0.5" or whatever you set it to be. If not, move it to X=0, Y=0. Using the UGS jog controller, raise the Z enough to be able to remove the tool and put the new one in. Since the Z zero will no longer be the same after the tool change, you will need to re-zero it. Lower the Z until it is zeroed (using the piece of paper method or Z-probe or whatever you use for zeroing) and then reset zero in UGS. This resets X,Y and Z zeroes, but X and Y didn't change, so only Z should be different from before. Now jog the Z up to give a bit of clearance and run the next gcode file.

With the stepper motors powered up, they hold really well, so you shouldn't have an issue with X and Y moving while you change the tool. If you think they did move while you were wrenching on the collet, you can always re-home the machine in UGS and then jog back to X=0, Y=0 and then zero your Z.

Hope that helps.

[cdb0ewm]

PERFECT ..I'll give it a try
Thank you

[cdb0ewm]

PERFECT ..I'll give it a try
Thank you