Numerical Control Machining Strategy of Multi-axis Orthogonal High Precision Rotating Frame

This paper addresses the challenges of difficult clamping, susceptibility to deformation, and excessive coaxiality deviations in multi-axis orthogonal high-precision rotary frames. By analyzing the precision requirements and machining difficulties of structural components, it successfully achieved the machining of spherical surfaces and spatial fillets through the design of clamping methods and specialized flexible combination fixtures. The machining method and technological parameters of 5-axis surface were determined by analyzing the machining method and tool path. Based on UG software, the surface patch and the cavity groove structure of T-cutter are designed. The auxiliary blank model was established in the roughing and finishing stage, the cutting parameters, tool selection and cutting path were optimized, and the tool track simulation was carried out after CAM numerical control program was generated to avoid tool collision or interference in the process of machining, and the efficient batch machining of curved thin-walled parts was realized by using five-axis numerical control, ensured the concentricity. Two heat treatments are carried out during the processing, and the dimensional stability of the product is good.