Machined motor end cover with a stepped central bore, flange holes and internal ribs

CNC Machining for Aluminum EV Motor Housings

Electric Vehicle Startup, USA, Texas

Aluminum EV motor housing machining focused on bearing bores, mounting interfaces, workholding, and inspection against the controlled drawing.

Account owner: PiPrecision Engineering Team

The Challenge

The aluminum motor housing required control of the bearing bores and the interfaces used to assemble the motor. Machining the housing involved more than achieving an individual bore diameter: the drawing also needed to define the relationships between the relevant mounting and locating features. Workholding, machining sequence, and access for measurement were therefore central to the process review. Production quantity and inspection coverage needed to be planned for the actual housing geometry and order requirements.

Our Solution

The machining approach used fixturing suited to the motor housing geometry, with inspection focused on the critical dimensions identified from the drawing. The review connected the machining setups to the locating features used during acceptance inspection. For repeat production, any request for process-capability data needs a defined feature, sampling plan, and reporting period. The requested evidence is agreed before production so that the report corresponds to the actual bore or locating feature being controlled.