Study On Profiling Method And Tools Of Hard Scraping Shaper Cutters

More and more hardened face gears are used widely. Shaping hardened face gear with high precision is one of the key developments of gear cutting technology at present. The traditional conical hard shaper cutter can't machine hardened face gear with high precision, because of the invincible antiomy between its shaping precision and cutting edge's angles to exert cutting performance. In this paper , a new profiling method of hard scraping shaper cutter is introduced successfully , which can make hard scraping shaper cutter have not only high profiling precision but also proper cutting edge's angles.In this paper , the precise cutting-edge curve model of the shaper cutter is constructed. The mathematical model of the rake face of the new profiling hard shaper cutter is established, which has proper rake angles, by using principle of envelope of differential geometry and motion theory. The distributions of hard shaper cutter's profiling errors and rake angles are analyzed. The theory basis for shaping grinding wheel is perfected . The cam used in the process of grinding hard shaper cutter rake face is designed and manufactured according to the corresponding theory. At last ,two kinds of new profiling hard shapper cutters are designed , and one is manufactured successfully due to the new profiling method, detection is made to test the result of the experiment.