A supersonic low-temperature airflow generating device for cooling in cutting process

Abstract

The invention discloses a supersonic speed low-temperature airflow generator for cooling in a cutting machining process. The generator comprises a high pressure gas cylinder or an air compressor, wherein the output pipeline of the high pressure gas cylinder or the air compressor is sequentially connected with a pressure reducing valve, a solenoid valve, a flow valve, a pressure gauge, a temperature regulator and a check valve; the check valve is connected with an injection component through a metal hose; the injection component comprises an injection adapter substitute and a contracting and expanding type nozzle; the contracting and expanding type nozzle comprises a nozzle contracting section, a nozzle throat part and a nozzle expanding section. The generator has the characteristics of being capable of acquiring the low-temperature airflow of which the outlet speed is supersonic speed, and being high in injection speed; the cutting thermal convection efficiency is improved; the high speed injection has excellent subsidiarity on chip-breaking and chip-removing of a material. Compared with other cooling methods, the generator has the advantages that the cost is reduced, the consumption article is the high pressure gas with low cost, the acquiring method is simple.

Description

technical field [0001] The invention relates to the technical field of cutting processing, in particular to a supersonic low-temperature air flow generating device used for cooling in the cutting processing process. Background technique [0002] Efficient and clean machinery manufacturing is the future development direction of the manufacturing industry. There are many efficient and clean cutting methods in the field of cutting processing. One of the important methods is to use low-temperature gas instead of cutting fluid as the cooling medium for cutting processing. As we all know, cutting fluids are serious environmental pollution, endangering the health of operators, and some materials are difficult to break and remove chips. The use of low-temperature gas cooling cutting is of great significance especially for high-speed cutting and ultra-high-speed cutting. Due to the short life of high-speed cutting and ultra-high-speed cutting tools, more cutting heat is generated, an...

AI Technical Summary

Problems solved by technology

Its core technology lies in the development of low-temperature gas generators. At present, the commonly used methods mainly include: indirect refrigeration using low-boiling point media. Since low-boiling point media such as liquid nitrogen are prepared externally, the operating cost of the entire system is high and it is not practical; indirect refrigeration with cycle compression , the refrigeration procedure is complicated and the cost is high; the vortex tube directly refrigerates, and the refrigeration efficiency is low

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