Data selection method for calculating blunt round radius of cutting edge

A technology of data selection and blunt circle radius, which is applied to measuring devices, instruments, optical devices, etc., can solve the problem that the calculation method of cutting edge blunt circle radius cannot reasonably select the data range of cutting edge blunt circle.

Active Publication Date: 2016-06-08
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] In order to solve the problem that the existing calculation method for the radius of the blunt circle of the cutting edge cannot reasonably select the range of data

Method used

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  • Data selection method for calculating blunt round radius of cutting edge
  • Data selection method for calculating blunt round radius of cutting edge
  • Data selection method for calculating blunt round radius of cutting edge

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Embodiment Construction

[0030] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0031] Taking a certain cutting edge of a double-vertex angle drill bit for drilling carbon fiber reinforced composite materials as the measurement and fitting calculation object, according to Figure 5 The operation process shown selects the data used for the calculation of the radius of the cutting edge blunt circle of the tool, based on which data is fitted to the blunt circle of the cutting edge and calculates the radius R of the blunt circle of the cutting edge of the tool. First, the ultra-depth-of-field microscope is used to observe the shape of the cutting edge of the tool by using the three-dimensional image synthesis function, and the contour of the cutting edge of the tool is intercepted by using the ultra-depth-of-field microscope software, and the data point C of the cutting edge profile of the tool is e...

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Abstract

The invention provides a data selection method for calculating the blunt round radius of a cutting edge and belongs to the technical field of the geometric feature measurement for cutting tools, which relates to a data selection method for calculating the blunt round radius of a cutting edge. According to the technical scheme of the method, firstly, the profile of the cutting edge of a cutting tool is acquired based on the microscopic measurement method, and the data point curve of the profile of the cutting edge of the cutting tool is extracted. Secondly, the fitting calculation is conducted to successively approximate the straight lines of the front and back tool surfaces of the cutting cool based on the iterative method, so that the range of the fitting data points of the blunt round of the cutting edge can be obtained. Thirdly, the blunt round radius of the cutting edge, the left distance difference and the right distance difference of the cutting edge are calculated. The above fitting calculation process is repeated for iterative computation, till the left distance difference and the right distance difference meet the iterative terminating condition. According to the technical scheme of the invention, the error, caused by the uncertain range of the fitting data points of the blunt round of the cutting edge, can be eliminated. Based on the method, the blunt round radius of the cutting edge of the cutting tool can be calculated more accurately and more really through the fitting calculation process, and the programming is easier to implement. Moreover, the measurement efficiency for measuring the passivation abrasion of the blunt round of the cutting edge of the cutting tool is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of tool geometric feature measurement, and relates to a data selection method for calculating the radius of a cutting edge blunt circle. Background technique [0002] In cutting process, tool wear is unavoidable, and tool wear will seriously affect the quality of cutting process, so it is necessary to quantitatively evaluate tool wear. At present, the flank wear zone width VB is widely used in metal processing to evaluate the wear degree of the tool. However, there are many forms of tool wear, especially for the cutting of some hard and brittle metal materials and composite materials. The main evaluation index of tool wear during machining. Especially in the processing of carbon fiber reinforced composite materials, when the cutting edge blunt circle radius is small, the fiber reinforced phase is easier to be cut off, but the tool cutting edge blunt circle radius shows a significant upward trend with the n...

Claims

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Application Information

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IPC IPC(8): G01B11/24G01B11/08
CPCG01B11/08G01B11/24
Inventor 王福吉钱宝伟贾振元白玉付饶何春伶
Owner DALIAN UNIV OF TECH
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