A kind of online detection method and system of micro wear amount of superhard material grinding wheel

Abstract

The invention relates to a superhard material grinding wheel micro wear quantity on-line detection method and system. According to the superhard material grinding wheel micro wear quantity on-line detection method and system, when a grinding wheel performs idling on a machine tool, light beams emitted by a laser displacement sensor are made to be irradiated in the direction perpendicular to the grinding surface of the grinding wheel, the laser displacement sensor is made to perform constant-speed moving in the direction parallel to the grinding surface of the grinding wheel, and in the movingprocess, preliminary sampling data are obtained; envelope curve extracting is performed after pretreatment is performed on the preliminary sampling data, and first and second envelope curve data are formed; two-time jumping change points are seeked from the difference between the first and second envelope curve data, and the first envelope curve data between the two points are taken as the data ofan area wherein the grinding surface of the grinding wheel is in; a reference surface average value is obtained according to the data after the pretreatment; the height data of grinding surface of the grinding wheel are obtained according to the data of the area wherein the grinding surface of the grinding wheel is in and the reference surface average value; and the height data of the grinding surface of the grinding wheel before grinding and the height data of the grinding surface of the grinding wheel after the grinding are obtained, so that the grinding wheel wear quantity is obtained. Bymeans of the superhard material grinding wheel micro wear quantity on-line detection method, the detection precision of the grinding wheel wear quantity is improved.

Description

technical field [0001] The invention relates to an on-line detection method and system for the tiny wear amount of a superhard material grinding wheel, and belongs to the field of precision ultraprecision machining and precision testing technology. Background technique [0002] In the dressing and grinding process of the grinding wheel, the grinding wheel itself will inevitably have a certain amount of loss (that is, the amount of wear). Dressing loss directly affects the service life of the grinding wheel, and grinding loss is an important factor affecting the machining dimensional accuracy. In the CNC grinding process, the amount of grinding wheel wear is detected for compensation and correction. In the grinding performance test or cost accounting of the grinding wheel, the wear amount of the grinding wheel needs to be detected to complete the calculation of the grinding ratio, service life and other indicators. Therefore, it is often required in engineering applications a...

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Problems solved by technology

[0009] The object of the present invention is to provide an on-line detection method for the micro-abrasion of super-hard material grinding wheels, which is used to solve the problem that there is no method for detecting the micro-abrasion of super-hard material grinding wheels in the prior art. The on-line detection system for the micro-abrasion of the hard material grinding wheel is used to solve the problem that there is no system for detecting the micro-abrasion of the super-hard material grinding wheel in the prior art

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