According to the new profiling characteristic of carbide pinion cutter with convex curved rake face, the machining process of convex curved rake face is designed, the special grinding equipment is designed and developed. Tool presetting and detecting equipment is developed by using laser sensor. It can be used to locate the initial location of grinding wheel precisely when convex curved rake face is machining. The tool path for CNC machining is solved. The grinding experiment is done for convex curved rake face of pinion cutter with 21teeth and 5modulus , different process parameters are established. The ideal surface roughness is obtained. The experiment result shows that the grinding equipment and tool presetting equipment are proper for machining requirements of convex curved rake face of pinion cutter.