Research on virtual manufacturing models of a new type of taper ball-end milling cutter
Based on the analysis of the difficulties in design and manufacturing and cutting edge curves of many kinds of revolving milling cutters, a design method is presented in this paper for a new type of cutting-edge. The general differential equation is given so that the cutting-edge, the three-grooves and the grinding wheel to grind can be satisfied. The actual grooves and cutting-edges of virtual manufacturing are presented. The general feeding speeds of grinding wheel used in 2-axis NC machining of the cutter were deduced. The virtual simulation of the taper ball-end cutter is carried out. It has been proved that the traditional problems in designing and manufacturing are solved successfully in this way, simultaneously the process is much simple for it can be formed only in one time elementarily.
Cutting edge curve models for equal pitch cutters and their applications
A mathematic model is established using infinitesimal geometry for the cutting edge design of special milling cutters which use equal lead helix as cutting edges; equations are given for front-end and proclitic surface of revolution of ball pillar milling cutters, ball taper milling cutters and angularly conical milling cutters;and corresponding models are established for the continuity cutting edge curves of milling cutters. Typical examples are given to illustrate the applications of mathematic models, which prove the correctness and applicability of these geometric models.
Finite Difference Modeling on the Temperature Field of Substrate in Friction Surfacing
Friction surfacing is an advanced process of great potential, especially in the field of repair and reclamation of worn and damaged components. As a kind of thermal processing technology, the temperature profile and changes of the substrate in friction surfacing are important factors to get coatings of high quality. In this paper, the temperature field of the substrate during the process is simulated by finite difference method. The results are consistent with experiments, reappearing the temperature change of the substrate during friction surfacing, allowing further study on figuration and quality of coatings.