Cutting negative pressure detection method based on ideal gas state equation

Abstract

The invention discloses a cutting negative pressure detection method based on an ideal gas state equation. At present, a measuring method especially suitable for detecting the negative pressure of a cutting edge during cutting does not exist. According to the cutting negative pressure detection method, after verification before leaving a factory, a through hole is formed in the middle of a front tool face of a cutting tool, the end, extending out of a measuring working chamber, of an inclined thin pipe is communicated with the tail end of the through hole through a guide pipe, and therefore a camera can be used for reading scales on the inclined thin pipe in the cutting process, the length value change of an air column is recognized, the pressure difference between the two ends of liquid in the inclined thin pipe is further obtained, and finally the negative pressure of the cutting edge during cutting is calculated. Therefore, the problem that the negative pressure generated by the cutting edge during cutting is measured along with the movement of the cutting tool is solved, the manufacturing difficulty is small, the principle is simple, the cost is low, configuration is greatly reduced, the detection precision is high, and the method has the advantages of being rapid in measurement, high in anti-interference capacity and high in reliability.

Description

technical field [0001] The invention relates to the detection of negative pressure at the cutting edge during cutting, in particular to an on-line measurement method for detecting negative pressure of cutting based on the ideal gas state equation. Background technique [0002] The pressure generated by cutting carries and transmits a variety of information during the operation of mechanical equipment. Monitoring and extracting useful information during the cutting process can help people better grasp the operating status of equipment, improve and maintain it in time, and maintain and improve products. Product quality plays a basic guarantee and promotion role. It is of great practical significance to study the influence of the negative pressure generated by the knife edge on the cutting efficiency during cutting. At present, the negative pressure measuring instruments on the market, the small ones are not accurate enough, and the large ones have higher accuracy, precision a...

AI Technical Summary

Problems solved by technology

At present, the negative pressure measuring instruments on the market, the small ones are not accurate enough, and the large ones have higher accuracy, precision and sensitivity in measurement, but most of the large precision instruments are not only expensive, but also require a lot of long-term maintenance costs. This type of instrument also requires skilled and high-level technical personnel to operate, which brings a huge economic burden to the enterprise.

Moreover, measuring the negative pressure generated by the cutting edge requires the probe of the negative pressure measuring instrument to follow the movement of the tool. It is difficult for existing negative pressure measuring instruments to follow the movement of the tool; of course, a high-precision following manipulator can be used to clamp the negative pressure The probe of the measuring instrument is used to follow, but the manipulator needs to be occupied all the time during the cutting process. Not only is the use cost high, but it is also easy to cause the tool to collide with the expensive manipulator, causing major economic losses. It is not a long-term solution to use the probe of the pressure measuring instrument to measure the negative pressure generated by the cutting edge

It can be seen that there is no measurement method that is particularly suitable for detecting the negative pressure of the knife edge during cutting.

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