I'm having a couple problems with my VMC15RT involving the spindle lock. First of all, strange as this may sound, I'm turning small parts in the spindle like a cnc lathe with single point tools mounted to the table. I know it requires a shift in thinking, but if you can get post the concept, the principles are exactly the same. I simply rewrote my post processor.
The first problem I'm having is with tapping. Since this is a single point tool, I'm having to "re-thread" the same thread as I'm only taking about 5 thou per pass. One day, my program was working perfectly... on multiple parts. The next day, same program, same tools, same set up and the threads aren't tracking identical with each pass. In other words, the threads are no good. I'm using G84.2 rigid tapping for the procedure.
The second problem I'm having is likely connected to the first. I was replacing a tool in an ER32 collet chuck while it was still in the spindle. In manual mode, I set M19. The spindle oriented and locked. I used the collet wrench to remove the old tool. No problem. When I retightened the collet nut on the new tool, the spindle slipped! I assume the belt is what slipped? How much torque should the spindle take before M19 slips? Is there any possibility of damage? Will this affect how the spindle orients or does something need to be re-homed? I'm guessing the belt is loose and that may be why the threads aren't coming out very nice.
A likely unrelated problem, number three, is when I first booted up my machine today, and ran my program, the machine kept "waiting" between tool changes (M1's are coded into the program there). But, the option stop was off. I checked the "options table" (typing MU during program execution). It too indicated the option stop was "off." Subsequent runs of the same program skipped the M1's as intended. Strange?
Thanks