Numerical-control machine tool retracting protection method

Abstract

The invention discloses a numerical-control machine tool retracting protection method. The method mainly comprises the following steps of: if a power module detects that the voltage of a DC bus is toolow, outputting a DC bus voltage low signal to a servo driving device; if the power module detects that a power supply is power down, outputting a power supply power-down alarm signal to the servo driving device; if a numerical-control system detects that a bus is abnormal, outputting a bus abnormity alarm signal to the servo driving device; and receiving a retracting protection function triggering signal by the servo driving device according to a time priority sequence and starting subsequent retracting protection process by taking the signal as a triggering source. Three retracting protection modes such as a stop mode, a rollback mode and a kinetic energy regeneration mode are provided. By utilizing the method, the servo driving device is capable of automatically completing the retracting process after the retracting protection function triggering signal is triggered, so as to effectively protecting machine tool equipment.

Description

technical field [0001] The invention relates to the technical field of automatic control of numerical control machine tools, and more specifically relates to a method for protecting a tool retraction of a numerical control machine tool. Background technique [0002] With the proposal of "Made in China 2025", the modernization level of intelligent manufacturing equipment industry and basic industry has been significantly improved. As a core industry, CNC machine tools are guided by market development and are constantly developing in the direction of high precision, high efficiency and high reliability. . At the same time, it has been widely used in aerospace, military, medical and other fields. Processing parts with special materials and uses also put forward higher requirements for the accuracy and reliability of CNC machine tools. [0003] However, in the process of CNC machine tool processing, there may be factors such as sudden power failure or machine tool failure, whic...

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Problems solved by technology

[0003] However, in the process of CNC machine tool processing, there may be factors such as sudden power failure or machine tool failure, which may cause the processing process to be interrupted, and the unretracted tool continues to move along the processing direction due to inertia. At this time, the CNC machine tool is in an abnormal In a controlled state, it is very easy to cause damage to the tool itself, and even cause irreparable damage to the processed parts, resulting in huge economic losses

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