Abstract: Based on the demand for high efficiency of cylindrical gear chamfering in production, a chamfering method based on rotary parting end face chamfering is proposed. Firstly, the motion coordinate systems of gear and tool are established by combining the principle of rotary parting machining,the transformation relationship between the coordinate systems is deduced. Secondly, the initial swept surface is constructed according to the initial cutting edge and the established coordinate transformation relationship. Then, according to the tool design principle and the edge sweep surface, construct the front face to get the cutting edge and construct the back face, and establish the three-dimensional model of the tool. Finally, the simulation verification experiment is carried out by the machine tool built in the virtual simulation environment. The experimental results show that the designed chamfering cutter is able to realize the efficient chamfering requirement of gear end face profile.