Machining Theory of Forming Complex Inner Helicoid and Numerical Algorithm to Design Contour of the Disc-Mill Cuter
The inner helicoid of the PDM’s stator is a kind of typical inner surface that is complex and tenuous. This paper studies the theory to form the inner helicoid in the screw stator which has a large lead and whose cross-section is composed by convex and concave curves using disc milling method. According to the varieties of the curve types of workpiece’s cross-section, a numerical method was proposed to calculate the theoretical contour shape of the disc milling cutter using coordinates of the fewer points on the workpiece’s cross-section. The manufacturing test confirmed the correctness of the design algorithm of the cutter’s profile and feasibility of this milling forming method.
Hun Guo, Taiyong Wang, Zeyu Weng, Weidong Jin, Shaoze Yan, Xuda Qin, Guofeng Wang, Qingjian Liu and Zijing Wang
K. Wang et al., "Machining Theory of Forming Complex Inner Helicoid and Numerical Algorithm to Design Contour of the Disc-Mill Cuter", Applied Mechanics and Materials, Vol. 141, pp. 339-343, 2012