I'm running a Bridgeport Series II w/ Heidenhain TNC155b and I'm doing a circular pocket mill program. In the cycle def 5.1 it calls for the set-up clearance which I want at +.125, however when I place a + sign in the program it gives me a error as wrong sign programmed. If I place a - it will work. so the question is were do I set the Z axis spindle?? At zero or at +.125 or somewhere else? It seems that the Z spindle will sometimes go too deep and not the programmed depth of .448.
Help me please understand.
Also sometimes the spindle will just stop turning while milling a program. Not all the time, but sometimes. Any suggestions on this problem??
Thanks in advance for your assistance.
Ben Herr