Analysis and Research on the Clamping Force Characteristics of Hydraulic Power Compensation Chuck
Hydraulic power chuck is the core functional component of CNC machine tools,and its design and application level di-rectly affect the machining quality of the workpiece.Based on the structure and working principle of hydraulic power compensation chuck,force analysis was conducted,and theoretical calculation models for static and dynamic clamping forces were derived.It was found that the main factors affecting static and dynamic clamping forces were wedge surface inclination angle,friction coefficient and cylinder thrust,machine speed,chuck and workpiece stiffness.Based on the finite element simulation analysis platform,the dynamic clamping process of the chuck was simulated using displacement load instead of input force.The comparison between the clamping force simulation and theoretical results under different working conditions shows that:the two values are similar,the maximum error is 6.2％,verifying the correctness of the established dynamic clamping force theoretical calculation model.
hydraulic power compensation chuckclamping forcecomputation modelnumerical simulation
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