A 2D online detection method for high-precision tool wear

A technology for tool wear and detection methods, applied in measuring devices, instruments, etc., can solve the problems of low detection accuracy, difficult detection steps, disassembly of tools or workpieces, etc., to achieve simple principles and operation steps, high-precision wear measurement, The effect of improving processing efficiency

Active Publication Date: 2021-10-08
DALIAN UNIV OF TECH
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Problems solved by technology

[0005] Although the above tool detection method can reflect the wear of the tool to a certain extent, when the radius of the blunt circle of the cutting edge is in the same order of magnitude as the radius of the CMM probe, the probe radius has a significant impact on the measurement results, and the detection accuracy Not high; there are still some problems such as difficult to realize the detection steps, slow detection speed, need to disassemble the tool or workpiece during measurement, and cannot measure online

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  • A 2D online detection method for high-precision tool wear
  • A 2D online detection method for high-precision tool wear
  • A 2D online detection method for high-precision tool wear

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Embodiment 1

[0045] Such as Figure 1-5 As shown, the steps of the 2D detection process of tool 1 wear under the condition that the radius of the blunt circle of the tool 1 is smaller than the radius of the probe 5 of the contact profile measuring device using the method of the present invention are as follows:

[0046] A. Take two pieces of soft metal 4, grind and polish their upper and lower surfaces by mechanical polishing, after reaching a surface roughness of less than 100 nanometers and a flatness of less than several microns, clean them with deionized water, and dry them for later use.

[0047] B. Trial machining a groove with a length of 10mm with unworn tool 1, and predict the radius R of the blunt circle of tool 1 according to the surface morphology of the groove t Size, by comparison, tool 1 blunt circle radius R t Smaller than the radius R of the contact profilometer probe 5 p size, it is necessary to remove the influence of the radius of the probe 5 of the measuring device to ...

Embodiment 2

[0062] Such as Figure 1-5 As shown, using the method of the present invention, the tool 1 wear 2D detection process steps under the condition that the radius of the blunt circle of the tool 1 is much larger than the radius of the probe 5 of the contact profile measuring device are as follows:

[0063] A. Take two pieces of soft metal 4, grind and polish their upper and lower surfaces by mechanical polishing, after reaching a surface roughness of less than 100 nanometers and a flatness of less than several microns, clean them with deionized water, and dry them for later use.

[0064] B. Trial machining a groove with a length of 10mm with the unworn tool 1, and predict the radius R of the blunt circle of the cutting edge according to the surface morphology of the groove t , and then with the radius size R of the probe 5 used by the contact profilometer p Comparing that, we get R t much larger than R p . Therefore, direct measurement of the dents left on the soft metal 4 bef...

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Abstract

The invention discloses a high-precision tool wear 2D on-line detection method, which comprises the following steps: pretreating the soft metal surface; predicting the radius of the blunt circle of the cutting edge of the tool; determining the measurement path; pressing the tool into the soft metal; Dent profile; Measuring the dent profile after tool wear; Tool wear analysis. The invention innovatively re-engraves the tool to leave marks on the soft metal, and obtains the radius of the blunt circle of the re-engrave by fitting the scanning point data of the dent, and indirectly obtains the wear condition of the tool. The present invention determines whether to perform compensation according to the relationship between the probe radius of the contact profile measuring device and the radius of the blunt circle of the cutting edge of the tool, so that the coordinate data of the scanning points before and after the tool wear can be accurately obtained, and the size of the fitting circle radius before and after the wear can be compared to help We intuitively understand the wear condition of the tool and achieve higher precision wear measurement. The invention can realize the on-line monitoring of tool wear and is beneficial to improve the processing efficiency.

Description

technical field [0001] The invention belongs to the field of tool wear detection, in particular to a high-precision 2D online detection method for tool wear. Background technique [0002] Ultra-precision machining is a key technology for the development of modern high-tech warfare, high-tech industry and cutting-edge technology. Diamond tools can well meet the requirements of ultra-precision cutting. Therefore, the evaluation and measurement technology of diamond tool wear is an important supporting technology for ultra-precision cutting , has great application prospects. The wear of the tool will lead to the deterioration of its cutting performance, which will reduce the machining accuracy of the workpiece to be processed, increase the surface roughness of the workpiece, and seriously cause vibration in the cutting process, affect production efficiency, and even cause safety accidents. The detection of tool wear and avoiding the use of excessively worn tools is an effectiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/20G01B21/10
CPCG01B21/10G01B21/20
Inventor 蔡引娣郭江赵勇冯健侯飞
Owner DALIAN UNIV OF TECH
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