Online measurement method for grinding wheel arc finishing outline
A measurement method and arc technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve problems such as time-consuming and laborious, and achieve the effects of ensuring measurement accuracy, improving processing efficiency, and shortening measurement time.
Active Publication Date: 2017-05-10
SHANGHAI UNIV
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Problems solved by technology
These methods are time-consuming and labor-intensive, and are not suitable for high-efficiency and large-volume modern automobile crankshaft production lines
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[0049] Preferred embodiments of the present invention are described as follows in conjunction with the accompanying drawings:
[0050] see figure 1, The grinding wheel arc dressing profile online measurement system includes an acoustic emission sensor 1, a magnetic base 2, a preamplifier 3, an acquisition card 4, a chassis 5, and a computer 6. The acoustic emission sensor 1 is adsorbed near the dresser by using the magnetic base 2, and is as close to the dressing point as possible without interference. Its installation height is equal to the dressing point of the dresser and the axis of the grinding wheel, and the installation surface is perpendicular to the propagation direction of the acoustic emission wave. The acoustic emission signal is collected on the computer 6 through the preamplifier 3, the acquisition card 4, and the chassis 5, and the acoustic emission signal value in the trimming process can be obtained after filtering.
[0051] see image 3 , the online measur...
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The invention relates to an online measurement method for a grinding wheel arc finishing outline. According to the method, an acoustic emission sensor is utilized to perform online monitoring on the grinding wheel finishing process, and online measurement of the grinding wheel arc finishing outline based on acoustic emission signals is realized by establishing a mathematic model of acoustic emission signal feature values of all positions and actual finishing cutting-in in the grinding wheel arc finishing process. Therefore, error compensation can be performed in time through high-efficiency online measurement, and grinding wheel arc finishing outline precision control is realized. Through the method, online measurement of the grinding wheel finishing outline is realized, it is not necessary to adopt complicated offline measurement after calibration, measurement time is greatly shortened while measurement precision is guaranteed, and the method is beneficial for improving machining efficiency in a fast large-batch production line.
Description
technical field [0001] The invention relates to an on-line measurement method for the circular arc trimming profile of a grinding wheel. Background technique [0002] As the key part of the engine, the crankshaft of the automobile, the grinding accuracy of the main journal and the Bali line of the connecting rod journal (that is, the arc shape of the crankshaft journal cylindrical surface generatrix with a certain tolerance requirement) has a great influence on the performance of the engine. Because the Bali line is usually realized by grinding wheel for forming and trimming, the grinding accuracy is mainly guaranteed by the accuracy of the sand profile. Therefore, it is extremely important to detect the actual profile of the grinding wheel arc trimming. For the measurement of the actual dressing profile of the grinding wheel, the traditional methods mostly use off-line measurement: either the grinding wheel is removed after dressing for direct measurement, or the profile i...
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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/17G06F30/367
Inventor 李静高华钰沈南燕汪小露吴雨润朱凯
Owner SHANGHAI UNIV