Characteristics of the grinder: According to the motion characteristics and process requirements of the grinder, there are the following requirements for electric drag and control: 1. The rotating movement of the grinding wheel generally does not require speed regulation. It can be dragged by a three-phase asynchronous motor, and only one-way rotation is required. When the capacity is large, a Y-triangle buck can be used to start. 2. In order to make the machining accuracy, so that it can run smoothly, the inertia is small and no impact when the reciprocating movement of the worktable is reversed, so the hydraulic transmission is used to realize the reciprocating movement of the worktable and the horizontal feed of the grinding wheel box.