Static And Dynamic Characteristics Analysis And Structure Optimization Of Direct Drive NC Turntable

According to the actual working conditions, the milling force on the turntable and the hydraulic pressure and cutting torque on the brake discs of key parts are calculated. Establish a three-dimensional parametric model of the turntable and generate a finite element analysis model by reasonably simplifying the mesh; perform static analysis on the different working conditions of the brake disc and the turntable to obtain its static characteristics, so as to verify the strength and static of the brake disc and the turntable Stiffness; the accuracy of the static analysis is verified by conducting stress experiments and comparing the static analysis results.

Perform constrained modal analysis on the CNC turntable to obtain the natural frequencies and vibration modes of the turntable; on the basis of modal analysis, perform a harmonic response analysis on the turntable to determine the dynamics of the turntable table at each frequency when the milling force is loaded in different positions Response value, get the dynamic characteristics of the turntable.

The design variables of the brake disc and the CNC turntable are selected, and the design experimental points of the brake disc and the turntable are selected by the CCD center point method and the finite element analysis of each experimental point is carried out to obtain the brake disc design variables to their quality and maximum stress. The response relationship and the response of the design variables of the turntable to its maximum deformation, mass and first-order natural frequency.