Numerical computation of tooth profile of noncircular gear

A simple and accurate numerical method for tooth profile of noncircular gear was proposed. According to the theory and real process of tooth profile generating, a pick up of the figure boundary was adopted in the method instead of the complicated deduction and solution of meshing equations. With a given pitch of noncircular gear, parameters of shape cutter and shape process data, tooth profile of the noncircular gear were computed accurately and quickly. Once the tooth profile data of noncircular gear was synthesized, the measurement and the incision process of noncircular gear can be conducted flexibly. The tooth undercutting and pointed tooth on noncircular gear were also investigated based on the tooth profile. And the method is successfully used in computing incision data of noncircular gear recently.