Numerical control quenching machine tool and quenching process for large workpieces

The invention provides a numerical control quenching machine tool for a large workpiece and a quenching process, belongs to the technical field of metal or alloy heat treatment equipment, and mainly aims to solve the technical problems that when the large workpiece is quenched in the prior art, the vertical distance between an inductive head and the workpiece needs to be continuously adjusted, and the machining cost is low. The problems that adjustment has obvious hysteresis quality and low precision, errors exist on the surfaces of large workpieces such as guide rails and the like in the machining process, and excessive heating or insufficient heating can be caused during quenching are solved, and a to-be-treated workpiece feature pre-collecting system, a quenching and walking mechanism and a quenching liquid circulating system are included. The collecting mechanism and the information processing system aiming at the relevant characteristics of the quenching surface of the workpiece are arranged, the surface