What is the manufacturing process and gear processing flow of differential gear? The following brief introduction:

　　1. Processing process: qualified precision forging blank → cold trimming → shot blasting → drilling → turning inner hole → turning spherical surface and back cone → heat treatment → grinding inner hole → grinding spherical surface.

　　2. It is not difficult to see the hot pre and post processing technology of gears. There are many processes in the process flow, and the positioning datum occasionally changes or has been positioned between the tooth shape and the inner hole, which results in more equipment, more manpower and more clamping of semi-finished products during the machining process. The quality is not easy to control, and the form and position tolerance is seriously out of tolerance due to the positioning phenomenon in the final finishing process.