Running state data recording and replaying method before fault of numerically-controlled machine tool

Abstract

The invention discloses a fault running state data recording and replaying method before fault of a numerically-controlled machine tool. The method comprises the following steps that running state real-time monitoring data for a plurality of channels are preset in a main control unit of the numerically-controlled machine tool before the numerically-controlled machine tool runs; in the machining process, the main control unit collects the running state real-time monitoring data to a own data buffer region in an uninterrupted manner, and judges the state of a fault triggering event in timing tasks of a machine tool numerically-controlled system; the main control unit sends a numerically-controlled system instruction, automatically stores all running state data in a certain time period before the fault occurrence moment into a data backup region from the data buffer region, and plays according to a time sequence when the situation that the fault triggering event occurs is judged. According to the pre-fault running state data recording and replaying method for the numerically-controlled machine tool, the running data information, which overall reflects the machine tool faults, can be efficiently and accurately acquired in real time under the condition that no any external equipment is additionally arranged, so that the fault source is conveniently, quickly and overall sought.

Description

technical field [0001] The invention belongs to the technical field of numerical control, and more specifically relates to a method for video recording and playback of operating state data of a numerical control machine tool before failure. Background technique [0002] After the current numerical control system breaks down, the alarm number and text display provided by the self-diagnosis system are usually used to find the source of the failure. However, due to the wide variety of faults, the cause of some faults cannot be found directly by the fault prompt of the numerical control system, which puts forward higher requirements for maintenance personnel, which is inconvenient to operate and greatly reduces maintenance efficiency. [0003] Aiming at this technical problem, some solutions have been proposed in the prior art. For example, Song Wenxue et al. proposed a remote monitoring and fault diagnosis system for the operation status of CNC machine tools (see "Micro-motor",...

AI Technical Summary

Problems solved by technology

However, further studies have shown that the above-mentioned system needs to be independently developed outside the CNC system, and corresponding hardware and storage devices must be added, the structure is complex, and the maintenance cost itself is high; Recording and playback of status data, and at the same time it is difficult to quickly analyze faults at the fault site

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