Method for acquiring temperature of first deformation area and second deformation area in high-speed cutting

Abstract

The invention relates to the technical field of high-speed cutting, and discloses a method for acquiring the temperature of a first deformation area and a second deformation area in high-speed cutting. The method includes: firstly, acquiring a temperature history of a tool measurement point during cutting through a manual thermocouple method; using the cutting temperature corresponding to any time point as the temperature of the tool measurement point and obtaining a temperature curve of the measurement point in a corresponding time duration in the condition of a stable cutting temperature according the temperature history; establishing a three-dimensional heat transfer model of a tool, and performing simulation and obtaining a heat analysis result; obtaining the temperature of the tool measurement point and the temperature of the second deformation area through analysis, acquiring a corresponding relationship between the temperature of the tool measurement point and the temperature of the second deformation area, and acquiring a temperature curve of the second deformation area according to the temperature curve of the measurement point; establishing a two-dimensional cutting simulation model, and acquiring a cutting simulation result; and acquiring a corresponding relationship between the temperature of the first deformation area and the temperature of the second deformation area in the condition of the stable cutting temperature through analysis, and then acquiring a temperature curve of the first deformation area. The method is simple, reliable, and is wide in application.

Description

technical field [0001] The present invention relates to the technical field of high-speed cutting, and more specifically relates to a method for obtaining the temperature of the first and second deformation zones of high-speed cutting. Background technique [0002] High-speed cutting uses high-strength tools to improve material removal rate, machining accuracy and surface quality by increasing cutting speed and feed rate. It is an advanced manufacturing technology with high efficiency, high quality and low cost. [0003] In view of the advantages of high-speed cutting, it is of great significance to study the mechanism of high-speed cutting in depth. Cutting temperature is an important part of the mechanism of high-speed cutting. Cutting temperature has always been a vague concept: cutting heat is distributed in the form of fields on the workpiece, on the tool, on the chip and in the cutting zone, but each temperature is collectively referred to as the cutting temperature. ...

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Problems solved by technology

[0005] For the acquisition of cutting temperature, common methods include natural thermocouple method, artificial thermocouple method, and thermal radiation method. Subdivision; the artificial thermocouple method can only obtain the temperature of the workpiece or tool measurement point, but cannot obtain the temperature of the first and second deformation zones; the thermal radiation method can obtain the temperature field, but because the cutting area is small, it cannot finely distinguish the high gradient of the micro-area Temperature Field

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