Method for predicting comprehensive performances of motorized spindle

Abstract

The invention discloses a method for predicting comprehensive performances of a motorized spindle. The method comprises: motorized spindle temperature information, a rotating speed, a torque, a power,noise information corresponding to the rotating speed, vibration information corresponding to the rotating speed, and motorized spindle axial runout information are collected; an upper computer processes the collected information and relational expressions between all parameters are established simultaneously; according to the relational expressions between all parameters, an optimal motorized spindle performance equation is established; an motorized spindle service life prediction model is established; the upper computer calculates conditions that need to be met by decision-making variablesin integrated motorized spindle testing and service life prediction and optimization according all collected parameters and the optimal motorized spindle performance equation; and a complete expression for integrated motorized spindle performance and service life prediction is constructed by using performance maximization and motorized spindle service life consumption minimization as optimizationobjectives, and a Pareto solution is obtained by using an NSGA-II algorithm. The prediction result obtained by the method is accurate and reliable and is close to the actual performance of the motorized spindle.

Description

technical field [0001] The invention relates to a method for predicting the comprehensive performance of an electric spindle. Background technique [0002] The electric spindle is the core component of the high-speed CNC machine tool, and its performance directly determines the high-speed machining performance of the machine tool. The electric spindle rotates at high speed during the working process, which requires high acceleration and deceleration performance, which puts higher requirements on the heat dissipation, lubrication and precision control of the electric spindle. At the same time, during the high-speed operation of the spindle, due to the heat generated by the spindle bearing and the built-in motor, it will cause a series of problems such as thermal deformation, vibration, and noise of the spindle, which will affect the machining accuracy. [0003] During the operation and working process of the electric spindle, there will be a certain amount of noise. In the i...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a comprehensive performance prediction method of the electric spindle, which solves the problem that the performance of the electric spindle in the prior art depends on workers using the traditional single vibration or noise as the evaluation reference, which cannot be comprehensively and accurately Technical Issues in Evaluating the Real Performance and Operating Conditions of Electric Spindle

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