SAL518 CNC vertical lathe for machining (160-225) national standard and non-standard motor casing, designed a special hydraulic fixture. It greatly improves the processing efficiency and reduces the labour intensity of workers. Moreover, it can realise the machining of upper and lower plane of motor casing, stop and core in one cut (divided into roughing and finishing). There is a great improvement on the precision and noise of the motor assembly in the later stage. The electrical components in the electrical cabinet adopt Schneider brand, and the special cooling air-conditioner for the electrical cabinet is used for cooling and dehumidification, so that the machine tool has a safe, stable and reliable power control system.