Study on Milling Technology of Screw Motor Stator's Inner Helicoid and Calculation Method of Milling Cutter Contour

摘要

Aiming at the slender hole of the screw motor stator which has a large lead and whose cross-section contour composed by convex and concave curve, the article proposed a processing method using finger milling cutter within a continuous inner helicoid and studied the formed theory about the movement of the tool relative to the workpiece. A new method was proposed to calculate the contour of the tool using limited point data of the contour of workpiece and the related software programs was designed. By designing and implementing of computer simulation, the correctness and feasibility of the processing technology are verified.