Instead, she rotated the C-axis motor shaft by hand—a tiny, precise, agonizing turn. She used a torque wrench set to 2.5 newton-meters, and a dial indicator on the tool holder. The needle moved 0.002 inches. She stopped.
“Never forget,” Margie said, closing the manual. “Behind every fancy CAD/CAM model and every five-axis toolpath, there’s a single, lonely parameter. 1860. It’s the spine. Break it, and the whole body falls.” fanuc parameter 1860
Some high-end FANUC controls (31i-B5, 30i-B) offer an optional that bypasses the dog entirely. In that mode, Parameter 1860 is ignored. However, standard dog-type return remains the default. Instead, she rotated the C-axis motor shaft by