Evaluation device of state information of machining process of numerical control milling machine

Abstract

The invention discloses an evaluation device of state information of the machining process of a numerical control milling machine. A machining state data collecting array device, an information storage device, a numerical control system and the like on a machine tool are connected into a semi-closed-loop control circuit through the evaluation device MCU. A machining state data collecting array collects state data of main shaft currents, feed currents, vibration, machining temperatures and the like in the machining process of the numerical control machine tool and can intelligently identify abnormal states of abrasion and breakage of a cutter, material defects of workpiece blank and the like. A communication unit can achieve real-time connection between the machining state information collecting array and the evaluation device MCU. The evaluation device MCU checks and analyzes collected machining state parameters according to a certain algorithm, generates a check report and guides the information storage device to update the optimal parameter record. Meanwhile, the evaluation device has the prejudgment function, submits alarming when meeting with problems which cannot be dealt with and meanwhile analyzes corresponding error reasons and provides proper solutions. According to the evaluation device of the state information of the machining process of the numerical control milling machine, the machining parameters of the milling machine and the state information of the machining process are checked.

Description

technical field [0001] The invention relates to state information evaluation of a numerically controlled milling machine process, and belongs to the field of numerically controlled machining control. Background technique [0002] Effective monitoring of state stability during machining is one of the key issues to improve the overall technical level of CNC. Numerical complexity, nonlinearity and uncertainty are the salient features of the NC machining process, but it is realized according to the machining instructions drawn up in advance. It is an open-loop machining method, which ignores the external factors in the machining process of the machine tool. The negative effects caused by unstable factors such as interference and the health of the machine tool itself have seriously affected the processing performance and quality of CNC machine tools. Therefore, it is very important to monitor and evaluate these factors in real time and optimize rolling during the processing proce...

AI Technical Summary

Problems solved by technology

"A CNC machine tool processing performance monitoring system" (application number 200810048524.2, application date 2008.07.25) detects the parameters and on-site processing status of multiple machine tools, analyzes the current processing performance and development trend of the machine tools, and ensures the The machining performance status data reflected in this invention are only: spindle current, feed motor current, and spindle vibration. The information describing the machining process of the machine tool is relatively simple, which is not enough to comprehensively reflect the actual machining status of the machine tool. , and the invention is mainly aimed at networked information transmission, rather than monitoring technology for specific machine tool processing processes and has not been deeply involved

The "Method and System for Adaptive Control of Turning Operation" (application number 99811978.4, application date 1999.09.02) only proposed an adaptive control method for turning, involving some simple turning processes, and the turning process It is continuous cutting, its process and mechanism are relatively simple, while the milling process is intermittent cutting, its process and uncertainty are far more complicated than the turning process

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