Most have a hand crank, this one was converted, you do not lose Z zero ref as the reference is at the quill extreme up position, so the table is just moving away, the only thing it will affect is the Z work co-ordinate, so some way has to be established to overcome this, you could either move the knee a known number of steps and reset the tool offset or I just usually re-zero the Z part zero, but I'm not a machinist!
Al.
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |