A lead screw health guarantee method based on real-time data statistics in the whole process

Abstract

The invention discloses a lead screw health guaranteeing method capable of realizing whole process real-time data statistics. The method comprises the following steps of performing data whole process real-time collection, performing lead screw position interval division, and performing interval division statistics on collected data; solving the standard deviation of each interval statistics index value of a lead screw, and representing the unbalance work condition of the lead screw by the standard deviation; and judging whether the standard deviation of each interval statistics index value is greater than the preset threshold value or not, and performing prediction judgment on the relative health state of each interval and the work condition of the lead screw. The method can be realized inside a numerical control system without adding any additional sensors and storage equipment; the external interference is avoided; the use is convenient; the unbalance work condition of the lead screw can be monitored, and the automatic warning function can be provided; the method can be used for guiding and regulating the position of a work table; and the work condition abnormity of the lead screw due to the long-period work of the work table of a machine tool in a certain position is avoided, so that the service life of the lead screw is prolonged.

Description

technical field [0001] The invention belongs to the technical fields of numerical control systems and machine tools, and more specifically relates to a method for ensuring the health of a lead screw with real-time data statistics throughout the whole process. Background technique [0002] In the feed transmission system of CNC machine tools, the worktable is driven by the screw to realize the movement of the machine table. As a key component in the feed transmission system of CNC machine tools, the working status of the screw will directly affect the transmission accuracy. If the working condition of the bar is abnormal, it will definitely affect the feed transmission accuracy of the machine tool. [0003] In fact, during the operation of the lead screw, due to the different speed and acceleration of each position of the lead screw and the magnitude of the force on the lead screw, the use of each position of the lead screw is also different. In the process, the workbench wo...

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Problems solved by technology

[0003] In fact, during the operation of the lead screw, due to the different speed and acceleration of each position of the lead screw and the magnitude of the force on the lead screw, the use of each position of the lead screw is also different. In the process, the workbench works at a certain position for a long time, so that the lead screw at this position is used for a long time, and the lead screw is in an unbalanced working state within the full stroke range.

If the lead screw is in an unbalanced working state for a long time within the full stroke range, the performance degradation of the lead screw will be accelerated, the service life of the lead screw will be reduced, and the feed transmission accuracy of the machine tool will be affected, thereby reducing the processing quality of the product and production efficiency

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