Parsons recommended a method of automatic machine control that would guide a milling cutter to produce a "thru-axis curve" in order to generate smooth profiles on work pieces.
Objective to develop an improved adjustable bilateral aiming device to substitute the old single-side one to guide lateral arch screw insertion ofaxis.
目的针对单侧可调式枢椎椎弓螺钉定位器的不足,研制改进出一种双侧可调式侧方椎弓定位器。
3
The hydrostatically guide C-axis sleeve is located at the front of the ram.