The application of numerical control technology in the processing of spiral rotor

WRITER：　SOURCE：　DATE：2019/08/07 8:25:47

The spiral rotor is the heart part of the rotor flow meter. According to the specification and application of the flowmeter, the section shape and lead of the spiral rotor are different. The section shape of helical rotor is generally composed of involute and cycloid. In the past, the processing of the spiral rotor was generally carried out on the common milling machine by the method of forming cutter and gear coupling. Due to the high price of imported machine tools from abroad, but the domestic CNC machine tools can not meet the accuracy requirements due to the limitations of manufacturing technology, and there is no effective means to detect. In the process of machining a rotor, complex programs are required to be processed in place, and the tool wear is very serious, which makes the manufacturing and processing costs very high. The spiral rotor is generally made of cast iron material, and the cutting load is small during machining, but the parts are easy to wear and corrosion in use. If steel is used instead of cast iron, the cutting load of the forming tool will increase dramatically, and it is difficult to process and improve the products.

At the beginning of 2000, a user in Shanghai put forward a variety of ideas for processing spiral rotors when purchasing CNC machine tools. After research, we have made three-dimensional modeling of the spiral rotor parts, developed a set of numerical control rotor milling machine for T-shaped rotor processing, which has greatly improved the processing accuracy, the tooth thickness and shape meet the technical requirements, the surface roughness is greatly reduced, the parts can be directly used for the assembly of the metering pump without repair, the left and right spiral rotors can be flexibly rolled, and the processing efficiency is greatly improved. In just a few months, it has created huge economic benefits for users. The spiral rotor is the heart part of the rotor flow meter. According to the specification and application of the flowmeter, the section shape and lead of the spiral rotor are different. The section shape of helical rotor is generally composed of involute and cycloid. In the past, the processing of the spiral rotor was generally carried out on the common milling machine by the method of forming cutter and gear coupling. Due to the high price of imported machine tools from abroad, but the domestic CNC machine tools can not meet the accuracy requirements due to the limitations of manufacturing technology, and there is no effective means to detect. In the process of machining a rotor, complex programs are required to be processed in place, and the tool wear is very serious, which makes the manufacturing and processing costs very high. The spiral rotor is generally made of cast iron material, and the cutting load is small during machining, but the parts are easy to wear and corrosion in use. If steel is used instead of cast iron, the cutting load of the forming tool will increase dramatically, and it is difficult to process and improve the products.