Aluminum Die-Cast Motor Mounting Flange With Internal Splines

Transmitting torque from a drive unit to a mechanical load requires a rigid interface that maintains strict concentricity between the shaft and the housing. This mounting flange features a central cylindrical hub with precision-machined internal splines, serving as the primary coupling point for micro gear motors or servo actuators. The surrounding bracket extends into a multi-directional support structure, integrating threaded ports and positioning holes to secure the assembly against vibration and rotational forces.

Cold chamber die casting establishes the near-net shape of the aluminum body, balancing structural mass with thin-walled sections to optimize weight without compromising stiffness. The critical manufacturing challenge lies in the secondary CNC machining of the internal spline profile and the coaxial alignment of the mounting face relative to the bore axis. Tight control over these datums prevents binding during rotation and ensures smooth power transmission, while the external surfaces are finished to provide clean mating interfaces for equipment frames.

Our facility supports this component through an integrated workflow combining high-pressure die casting with multi-axis CNC milling, utilizing Toshiba and Ube machines for consistent material density. Quality validation includes CMM inspection for spline geometry and positional tolerances, ensuring each batch meets the rigorous standards required for robotics and industrial automation applications. Submit CAD files specifying spline module, pitch diameter, and mounting hole patterns to initiate a DFM review and receive a tailored quotation based on volume and surface treatment needs.