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Non-contact online detection method for circular degree error and abrasion loss of metal based abrasion wheel and device for achieving method

A roundness error, non-contact technology, applied in the field of grinding, can solve the problems of narrow application range of grinding wheel wear, roundness error of metal-based grinding wheel, etc., and achieve the effect of wide application range, high sensitivity and high detection accuracy

Active Publication Date: 2016-01-13
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing methods for measuring the roundness error and wear amount of metal-based grinding wheels have a narrow application range, provide a non-contact metal-based grinding wheel roundness error and online detection method and realize the method installation

Method used

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  • Non-contact online detection method for circular degree error and abrasion loss of metal based abrasion wheel and device for achieving method
  • Non-contact online detection method for circular degree error and abrasion loss of metal based abrasion wheel and device for achieving method
  • Non-contact online detection method for circular degree error and abrasion loss of metal based abrasion wheel and device for achieving method

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specific Embodiment approach 1

[0015] Specific implementation mode one: combine figure 1 Describe this embodiment, a non-contact metal-based grinding wheel roundness error and wear amount online detection method described in this embodiment, the method is: the position of the eddy current sensor 1 is fixed, and the eddy current sensor 1 is used to measure the eddy current The distance between the probe of the sensor 1 and the surface of the metal-based grinding wheel 6 is calculated according to the change of the distance to obtain the change of the radius of the metal-based grinding wheel 6, and the radius of the metal-based grinding wheel 6 during the grinding process is obtained according to the change of the radius of the metal-based grinding wheel 6. For the roundness error curve, the wear amount at different positions on the surface of the metal-based grinding wheel 6 is calculated by comparing the changes in the radius of the grinding wheel at different positions before and after grinding.

[0016] T...

specific Embodiment approach 2

[0021] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation of the non-contact metal-based grinding wheel roundness error and wear amount online detection method described in Embodiment 1. In this embodiment, the method is specifically: The measuring head of the eddy current sensor 1 is fixed in the radial direction perpendicular to the middle section of the grinding wheel axis of rotation, and the distance between the measuring head of the eddy current sensor 1 and the surface of the metal-based grinding wheel 6 is measured by using the eddy current sensor 1, according to the change of the distance The change of the radius of the metal-based grinding wheel 6 is calculated, and the roundness error curve and the wear amount of the metal-based grinding wheel 6 during the grinding process are obtained according to the change of the radius of the metal-based grinding wheel 6 for one revolution; by comparing the rad...

specific Embodiment approach 3

[0022] Specific implementation mode three: combination figure 1 Describe this embodiment. This embodiment is a further limitation of the non-contact metal-based grinding wheel roundness error and wear amount online detection method described in Embodiment 2. In this embodiment, a photoelectric code disc 4 is used to detect The angular position of each point on the outer circle of the grinding wheel 6 is measured and positioned to obtain the position information of the roundness error curve of the metal base grinding wheel 6 and the wear amount of each point on the grinding wheel surface.

[0023] The photoelectric code disc is installed coaxially with the metal-based grinding wheel. The distance detected by the eddy current sensor is displayed and recorded by the LABVIEW program on the computer, and then the MATLAB program filters, calculates and draws the roundness error curve. The specific position information of the wear point and roundness error is fed back to the machine...

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Abstract

The invention discloses a non-contact online detection method for the circular degree error and the abrasion loss of a metal based abrasion wheel and a device for achieving the method and relates to the online detection technology of the circular degree error of the metal based abrasion wheel and the abrasion loss of a abrasion wheel of the abrasive machining field. The problem that the application range of an existing method for measuring the circular degree error of the metal based abrasion wheel and the abrasion loss of the abrasion wheel is narrow is solved. According to the scheme, the position of an eddy current sensor is fixed, the distance between a measuring head of the eddy current sensor and the surface of the metal based abrasion wheel is detected online through the eddy current sensor, and the change conditions of the radius of the abrasion wheel in different positions are obtained through calculation, so that a circular degree error curve for the metal based abrasion wheel to rotate one circle is obtained. The abrasion loss of different positions of the surface of the metal based abrasion wheel is obtained through calculation by comparing the changes of the radius of corresponding positions after a period of grinding time. The non-contact online detection method for the circular degree error and the abrasion loss of the metal based abrasion wheel and the device for achieving the method are capable of detecting the abrasion loss of the metal based abrasion wheel and the circular degree error of the abrasion wheel in the grinding process in a non-contact mode in real time; the detection precision is high and the application range is broad.

Description

technical field [0001] The invention relates to the on-line detection technology of the roundness error of the metal-based grinding wheel and the wearing amount of the grinding wheel in the field of grinding processing. Background technique [0002] With the rapid development of space technology, there is a higher demand for space optical systems and their devices, especially for the surface of space optical devices. At present, the materials of large-diameter space lenses mainly use SiC ceramics, optical glass, glass ceramics, etc., due to Their high hardness and brittle characteristics make ultra-precision grinding with metal-based diamond grinding wheels an important processing method for these space lenses. [0003] Due to the high hardness and brittleness of the lens material, and most of them are large-diameter lenses, the metal-based diamond grinding wheel wears a lot during the grinding process. On the one hand, it causes the roundness error of the grinding wheel and...

Claims

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Application Information

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IPC IPC(8): B24B49/10B24B49/16
CPCB24B49/105B24B49/165
Inventor 张飞虎刘忠德王凯李琛
Owner HARBIN INST OF TECH
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