Surface machining device and method aiming at bending metal pipes of small specifications

Abstract

The invention provides a surface machining device and method aiming at bending metal pipes of small specifications and relates to the field of metal pipes. The surface machining device aiming at bending the metal pipes of the small specifications is used for bending pipe bodies and comprises a working table, a placing groove, a bending mechanism, a supporting rod, a cable and multiple polishing mechanisms. The placing groove is formed in the working table. The bending mechanism is arranged on one side of the placing groove. According to the surface machining device aiming at bending the metalpipes of the small specifications, by means of cooperation of the cable, a fixing sleeve, a tiny electric pushing rod and a scraper, the whole polishing mechanism extends into the metal pipes to be bent. The function of filler is achieved, and the interiors can be stressed uniformly when the pipes are bent. After the pipes are bent, the cable is pulled to drive the scraper on the polishing mechanism to move while the scraper makes contact with pipe walls. Thus wrinkles generated on the inner walls of bent portions of the pipes are milled flatly, the effect of polishing the inner walls of the metal pipes of the small specifications is achieved, and the situation that due to existence of the wrinkles, the use effect of the pipes is influenced.

Description

technical field [0001] The invention relates to the technical field of metal pipes, in particular to a surface processing device and method for bending small-sized metal pipes. Background technique [0002] Metal pipes are commonly used accessories, and metal pipes need to be processed according to actual needs before use. [0003] For example, the "Bending Device and Bending Method for Pipe Fittings Based on Ultra-Low Temperature Ice Self-lubrication" has been disclosed on the China Patent Network, and the patent number is 201911133471.9. The above-mentioned device is provided with a guide mechanism, a propulsion mechanism, a bending die, a pressing mechanism and the like. When the above-mentioned device is in operation, the metal pipe will enter the bending die through the guide mechanism to bend the metal pipe. [0004] However, during the bending process, the outer and inner sides of the metal pipe are shortened by tangential compressive stress, making the inner pipe w...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a surface processing device and method for bending small-sized metal pipes, which solves the problem that the small-sized metal pipes in the above-mentioned background technology have small diameters, and the grinding mechanism cannot extend into the interior. The problem that it is impossible to grind the inner wall folds at the bends of small-sized metal pipes

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