Analysis of new energy vehicle motor casing processing technology

In recent years, new energy vehicles have become the focus of the development of the global automobile industry, of which pure electric vehicles account for the highest proportion.

Without engines and complex transmissions, batteries, motors and electronic control become the core key components of pure electric vehicles. Due to the "three electric" parts in the structure of traditional fuel vehicles have a different, therefore, the processing technology is also different.

Take the motor, the motor is mainly composed of shell, front and rear end caps, shaft, stator, rotor and wiring harness. Among them, the performance of the shell, front and rear end caps, shaft, stator and rotor is closely related to the level of processing.

The machining of the motor casing, the machining of the rear end cover and the machining of the motor shaft mainly involves boring and grinding. 

The drive motor shell of pure electric vehicles is usually made of aluminum alloy to meet the requirements of automotive lightweight, and its center hole diameter generally exceeds 250mm. 

Its machining difficulties mainly include: first, large-diameter holes, IT6 tolerance grade; second, the main hole and bearing hole shape and position tolerance requirements are high; the shell is a thin-walled parts, easy to produce deformation and vibration.