Machine tool multi-source data acquisition system and method based on NC code triggering

Abstract

The invention provides a machine tool multi-source data acquisition system and method based on NC code triggering. The machine tool multi-source data acquisition system based on the NC code triggeringincludes a numerical control system data acquisition module, an additional sensor data acquisition module, and an industrial computer; wherein an NC code monitoring module and a time registration module are installed on the industrial computer; the acquisition method includes the steps of setting an acquisition mark code, triggering an acquisition judgment, performing multi-source data acquisition, performing data time registration, and the like; and when the machine tool runs to a target processing program where the acquisition mark code is located, the acquisition system can automatically trigger the acquisition of the numerical control and additional sensor data, and perform time registration and storage on the multi-source sensor data. The machine tool multi-source data acquisition system and method based on the NC code triggering solves the problem that the time synchronization of the multi-source data is difficult to ensure due to the isolated collection of the data of the numerical control system and the additional sensor.

Description

technical field [0001] The invention belongs to the field of industrial automation and testing, in particular to a machine tool multi-source data acquisition system and method triggered based on NC codes. Background technique [0002] With the development of CNC machine tools in the direction of high precision and intelligence, relying only on the data carried by the CNC system of the machine tool itself can no longer meet the data requirements of intelligent technology research such as machine tool fault diagnosis, health warning, and energy consumption analysis. Therefore, most of the research at this stage is to expand and enrich the operation data of CNC machine tools by adding sensors to the machine tool. During the operation of the machine tool, the machine tool status data generated by the CNC system and the machine tool’s external sensors are collectively referred to as multi-source data. For the collection of this multi-source data, the current common practice is to...

AI Technical Summary

Problems solved by technology

During the operation of the machine tool, the machine tool status data generated by the CNC system and the machine tool’s external sensors are collectively referred to as multi-source data. For the collection of this multi-source data, the current common practice is to wait for the machine tool to start running. The data acquisition is carried out independently, and the data acquisition of the sensor needs to manually trigger the data acquisition system to collect the additional sensor data, which leads to the low efficiency of multi-source data acquisition of the machine tool, and poor time matching between the collected sensor data and the data of the CNC system of the machine tool , It is difficult to match the sensor data with the state of the machine tool, etc.

[0003] Chinese Patent Publication No. CN104298173A discloses a network-oriented real-time monitoring method for acquiring process parameters of CNC machine tools. The acquisition method can acquire operating data of multiple machine tool numerical control systems, and record process parameters by recording NC programs. However, the acquisition method The process fails to realize the automatic collection of machine tool CNC system data, and does not consider the collection of external sensor data

Chinese Patent Publication No. CN10256603A discloses a remote monitoring and fault diagnosis system for CNC machine tools. The system uses sensors to collect state information data of machine tools. Corresponding to the running state

This method can collect the internal and external sensor information of the machine tool at the same time, but this method needs to add a dedicated Bluetooth module to the CNC system and the collection terminal, the collection device is complex, and is limited by the type of monitoring code, and cannot accurately match the operating status of the machine tool

At the same time, none of the above patents performs time synchronization registration processing on the collected multi-sensor data

[0004] To sum up, the current acquisition device cannot realize the automatic acquisition of machine tool state data on the basis of matching the actual processing conditions of the machine tool, and the data acquisition of the numerical control system and the external sensor are isolated from each other, which is not convenient for later data processing and analysis, which limits the Application and development of big data and multi-sensor fusion technology in machine tool industry

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