Machine tool cutting tool monitoring system

Abstract

The invention relates to the field of numerical control machine tools, and provides a machine tool cutting tool monitoring system. The machine tool cutting tool monitoring system comprises a cutting tool load real-time monitoring unit and a model automatic evaluation unit, wherein the cutting tool load real-time monitoring unit monitors the current change amount of a machine tool spindle motor inthe machining process of a cutting tool and sends the current change amount to the model automatic evaluation unit; and the model automatic evaluation unit converts the current change amount receivedin real time into the wear amount of the cutting tool, compares the real-time wear amount with set upper and lower control values, evaluates the machining state of the cutting tool, and prompts an operator to stop and change the cutting tool if the current change amount exceeds the set upper and lower control values. According to the technical scheme, the state of the cutting tool in the whole cutting process is monitored, and the software detection mode not only avoids the influence of hardware detection equipment on machine tool transformation, but also can monitor edge chipping and breakagein real time, so that the cutting tool in an abnormal state is prevented from continuing performing machining and affecting product quality, and the quality of machined products is controllable.

Description

technical field [0001] The invention relates to the field of numerical control machine tool processing, in particular to a machine tool tool monitoring system. Background technique [0002] During the cutting process of the workpiece, the tool will be broken, chipped and damaged. The wear of the tool will cause the geometric shape of the tool to change, so that the workpiece will have dimensional deviation and affect the processing quality of the workpiece. In order to avoid excessive deviation of the workpiece and meet the machining accuracy requirements, it is necessary to monitor the wear of the tool, and determine whether the tool needs to be changed according to the monitoring results. [0003] For a long time, researchers at home and abroad have done a lot of work in the online monitoring of tool wear, and have achieved remarkable results in the fields of monitoring methods, monitoring parameter selection, and signal processing and identification. Some methods have bee...

AI Technical Summary

Problems solved by technology

The traditional tool wear status monitoring method is the direct monitoring method. The direct monitoring method mainly detects by directly measuring the average wear amount of the middle part of the flank wear zone. This method needs to stop for detection, which interrupts the production process and affects the processing efficiency. Realize online real-time monitoring; Another common method is to install hardware sensors or probe detection methods. This method is not only troublesome to install, but even needs to change the structure of the machine tool. Precision