ANALYSIS OF THE DEFORMATION ON THE WORM GEAR WITH HELP OF FEM FOR THE ACCURATE DRIVED C AXIS OF THE TURNING CENTER

Abstract eng:
Main spindle where is C-axis realized is for turning operation drive with spindle motor with power 71kW. For milling and drilling operation is this main motor uncoupled through neutral position in this gear box and spindle is hydraulic coupled with worm gears, where are geared with two synchronous servomotors controlled in mode Master – slave. This mode assures to change the parameters of electrical preloading between both servomotors from the machine control. Important step for better specify of the mathematical model C axis is determine the torsion deformation and stiffness on the worm gear in relationship on the torque load. For this analysis will be create simplified 3D model ZA type of the worm gear for the calculation in FEM (Finite Element Methods). 3D model of worm and worm wheel is created in the program ProEngineer. Complete model is transferred to the program FEM concretely Ansys as volume assemble. Accuracy of the results from 3D model is compared with existing simplified 2D model. The value of the torsion deformation by more states of the loading on the worm gear is used to the calculated model of the drived C axis.

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