Device and method for thin wall stainless steel pipe double-cutter symmetric planetary automatic cutting

Abstract

The invention discloses a device and a method for thin wall stainless steel pipe double-cutter symmetric planetary automatic cutting. According to the invention, cutting cutters are fixed on autorotation motors; the autorotation motors and the cutting feed adopt servo motors to achieve step-less speed regulation of cutting rotating speeds and a feed speed; rotating cutter discs are connected with the servo motors controlling the autorotation of the milling cutters by adopting guide rails to achieve the functions of cutting feed guiding and wound tube rotating cutting; through the arrangement that the two cutters are symmetric, in the cutting process, the cutting efficiencies of the two cutters are improved, the abrasion speed of the cutters is lowered, cutting force for a tube is symmetrical, the plastic deformation is relatively uniform, and the notch verticality is improved; through the adoption of PLC control, the problems of electric wire winding is solved through automatic regulation of autorotation and revolution of the cutters and cutting speed of cutting feed according to a cutting material, the size of the tube diameter, and the thickness of the tube; meanwhile, the problems of poor contact, abrasion, oxidation, short service life and the like caused by the form of adopting a carbon brush are solved.

Description

technical field [0001] The invention belongs to the field of mechanical equipment and relates to a device and method for cutting thin-walled stainless steel pipes, in particular to a device and method for symmetrical planetary automatic cutting of thin-walled stainless steel pipes with a wall thickness of about 1 mm. technical background [0002] With the vigorous development of industries such as automobiles, aviation, aerospace, petroleum, chemical and food, stainless steel pipes have been widely used. Compared with general steel, the strength and hardness of stainless steel are not high, but because stainless steel contains a large amount of C r , N i , M n And other elements, good toughness, high thermal strength, low thermal conductivity, large plastic deformation during cutting, severe work hardening, high heat generated by cutting, difficult heat dissipation, etc., when cutting stainless steel tubes, it is easy to cause cutting at the cutting edge High temperature,...

AI Technical Summary

Problems solved by technology

This type of equipment has low cutting efficiency, unbalanced feed, poor centering accuracy, and the claws are easily stuck by iron filings. Some pipes are even cut on a lathe. In the early 1980s, the domestic research and development of special hydraulic pressure Although the pipe cutting machine has made a step forward in clamping and knife feeding technology, it also has weaknesses such as poor knife balance and low pipe cutting efficiency, and is not suitable for cutting thin-walled pipe fittings.

Moreover, there is currently no planetary automatic pipe cutting machine specially used for cutting thin-walled stainless steel pipes in China.

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