A real-time monitoring system, device and method for tool breakage during CNC machine tool machining

A technology of processing and CNC machine tools, applied in general control systems, control/adjustment systems, program control, etc., can solve the problems of lack of real-time monitoring and high sensitivity, and achieve convenient machine tool integration, high signal stability, and high judgment accuracy Effect

Active Publication Date: 2022-02-01
西安精雕精密机械工程有限公司
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a real-time monitoring system, device and method for tool breakage in the machining process of CNC machine tools, so as to solve the problem of lack of real-time monitoring and high-sensitivity monitoring tool breakage methods in the prior art. technical problem

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  • A real-time monitoring system, device and method for tool breakage during CNC machine tool machining
  • A real-time monitoring system, device and method for tool breakage during CNC machine tool machining

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Embodiment Construction

[0038] The present invention is described in further detail below in conjunction with accompanying drawing:

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be construed as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance; in addition, unless otherwise Clearly stipulated and limited, the terms "installation"...

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Abstract

The invention discloses a system, device and method for real-time monitoring of tool breakage in the machining process of a numerical control machine tool. Time-domain data is obtained by differentially processing the accumulated pulse numbers collected by a grating ruler, and the time-domain data is Fourier-transformed and converted It is the frequency domain data, extract the amplitude of the characteristic frequency from the frequency domain data, and compare the amplitude with the reference threshold to judge whether the knife is short, so as to realize the real-time and high-sensitivity monitoring of the tool breakage during the machining process. The method can monitor the current health state of the cutting tool in real time without interrupting the machining process and reducing production efficiency. The judging method is simple and reliable, and has high judging accuracy; no additional sensor is needed, the hardware cost is reduced, and it is convenient to integrate with the machine tool.

Description

【Technical field】 [0001] The invention belongs to the technical field of processing machine tools, and in particular relates to a real-time monitoring system, device and method for tool breakage during CNC machine tool processing. 【Background technique】 [0002] During the processing of CNC machine tools, due to unreasonable tool path, unstable cutting force, poor tool consistency, uneven workpiece material, tool aging, stress fatigue and other reasons, tool breakage is very easy to occur, especially in small diameter tools due to their low strength. Most common in high-speed machining. In addition, due to the small size of the tool, the small amount of cutting, and the influence of cutting fluid, it is impossible to judge whether the tool is currently in a healthy state through manual inspection, or through the change of cutting sound, which will affect the subsequent processing process and waste A lot of machining time, especially semi-finishing or finishing processes wit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4065
CPCG05B19/4065G05B2219/37616
Inventor 肖亮张亚龙刘茹顾远坤
Owner 西安精雕精密机械工程有限公司
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