Shuangfu Suo

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1. Introduction As industrialization continues to evolve, nations worldwide are actively advancing the modernization of industrial production and automation upgrades. Industrial robots, as the primary equipment for substituting manual labor to enhance production efficiency, have garnered extensive attention and research within industrial automated production lines.

1. Introduction In high-precision machine tool equipment, there exist numerous mechanical joint surfaces, and the contact stiffness characteristics of these joint surfaces constitute a critical weak link that affects the machining accuracy [1]. According to statistics, the stiffness of the joint surface accounts for 60%~80% of the overall stiffness of the machine tool system [2].