Health degree quantitative evaluation method for rolling ball lead screw of numerical-control machine tool

Abstract

The invention discloses a health degree quantitative evaluation method for a rolling ball lead screw of a numerical-control machine tool. The health degree quantitative evaluation method comprises thefollowing steps: S1, calculating characteristic indexes after removing noises of a vibrating signal and a voltage signal generated by the rolling ball lead screw while acquiring a working state of the machine tool, and obtaining current health indexes according to a formula; S2, substituting the health indexes into a formula to solve an equation to obtain the service life of the current equationrolling ball lead screw; and S3, substituting the service life into the formula to obtain a health predicating formula of equipment. The health degree quantitative evaluation method can predicate a health condition of the machine tool rolling ball lead screw and performs quantitative display, prevents equipment faults in advance, prolongs the working period of the equipment, avoids plant economicloss caused by untimely part maintenance, can be suitable for various working environments, and is wide in applicability.

Description

technical field [0001] The invention relates to the technical field of numerical control machining and the technical field of data analysis, in particular to a quantitative evaluation method for the health degree of a ball screw of a numerical control machine tool. Background technique [0002] The ball screw is an important precision part of the machine tool. It has an obvious role in ensuring the machining accuracy during processing. Its aging and health directly affect the yield of the product. The faults caused by the ball screw are various and there is no fixed Modes, some are gradual failures, and the failures become more and more serious with the use of time; sometimes they are sudden failures, generally without obvious symptoms. These failures are caused by various unfavorable factors and the interaction of the outside world. Once a failure occurs, it will affect the quality of the product, and seriously cause the shutdown of the machine tool and the factory, which w...

AI Technical Summary

Problems solved by technology

[0002] The ball screw is an important precision part of the machine tool. It has an obvious role in ensuring the machining accuracy during processing. Its aging and health directly affect the yield of the product. The faults caused by the ball screw are various and there is no fixed Mode, some are gradual failures, and the failures become more and more serious with the use of time; sometimes it is sudden failures, generally without obvious symptoms

These failures are caused by various unfavorable factors and the interaction of the outside world. Once a failure occurs, it will affect the quality of the product, and seriously cause machine tool shutdown and factory shutdown, which will seriously affect the production of enterprises.

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