Method for synchronously controlling lives of spindle parts of numerical-control machine tool

Abstract

The invention discloses a method for synchronously controlling lives of spindle parts of a numerical-control machine tool. The method includes fitting transient life parameters of the spindle parts according to running parameters of a spindle of the numerical-control machine tool, and building transient life models of the spindle parts of the numerical-control machine tool; computing fixed-cycle life synchronous-moment transient failure probabilities of the spindle parts according to the transient life models of the spindle parts of the numerical-control machine tool, dynamically selecting quasi-failure spindle parts with potential failure hazards according to quasi-failure part criteria, distributing life synchronous control measures and eliminating the potential failure hazards of the spindle parts; and correcting the operating lives of the spindle parts of the numerical-control machine tool according to life synchronous correction models of the parts so that the working lives of the spindle parts are synchronous and the working lives of the spindle parts and the designed working life of the spindle of the numerical-control machine tool are synchronous. The method is specifically utilized for solving problems caused by inconsistency of working lives of various parts in a running procedure of a spindle of a numerical-control machine tool, and has the advantages of simplicity, convenience and high applicability, universality and expandability.

Description

technical field [0001] The invention relates to a method for equipment operation maintenance and management, in particular to a method for synchronously controlling the life of a spindle part of a numerically controlled machine tool. Background technique [0002] High-speed and high-precision have become the development direction of machine tools today, and the main shaft is the most complex part with a high failure rate. The working life of the spindle system is directly related to the service life and working performance of the entire CNC machine tool. Due to the wear and tear of its component parts, the change of the clearance or friction of the kinematic pair, etc., the sudden failure of the spindle system will lead to the failure of the whole machine, and finally make the CNC machine tool unable to reach its specified working life. For example, the excessive wear and gap increase of the gears of the main shaft system lead to a large amount of wear of the working tooth ...

AI Technical Summary

Problems solved by technology

This method lacks the judgment of the life state of the spindle parts, resulting in excessive maintenance or insufficient maintenance of the parts, that is, the parts that need to be adjusted cannot be repaired or replaced, and the parts that do not need to be adjusted are repaired or replaced, resulting in an increase in the potential failure of the CNC machine tool spindle. , which reduces the utilization rate of the CNC machine tool, increases the maintenance cost and reduces the service life

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