According to the movement characteristics and process requirements of the grinding machine, there are the following requirements for electric drive and control: 1. The rotational movement of the grinding wheel generally does not require speed regulation, but can be driven by a three-phase asynchronous motor, and only requires unidirectional rotation. In case of large capacity, Y-triangle step-down starting can be adopted. 2. In order to ensure the machining accuracy, make it run smoothly, and ensure that the inertia of the worktable is small and there is no impact when reversing its reciprocating motion, hydraulic transmission is used to realize the reciprocating motion of the worktable and the transverse feed of the grinding wheel box.