A multifunctional rod cold drawing die set and cold drawing method

Abstract

A multifunctional rod cold drawing die set and cold drawing method, wherein the cold drawing die set includes a straight groove drawing die composed of an installation cylinder one and at least one straight groove drawing part arranged on the inner wall of the installation cylinder one, And, the angle drawing mold composed of the installation cylinder two and the angle drawing part arranged on the inner wall of the installation cylinder two for bending the straight groove drawn from the straight groove drawing wall; the angle drawing mold The manufacturing part includes a first bending surface connected to the inner wall of the second installation cylinder, a second bending surface, and a connecting surface connecting the first bending surface and the second bending surface, the first bending surface and the second bending surface Bend to the inner wall of the second installation cylinder. The present invention can cold-draw the cold-drawing die set and the cold-drawing method of the multifunctional rod with good structural strength, strong deformation resistance, smaller wall thickness, more material saving, cost saving, and convenient installation of external equipment. Secondary cold drawing, low pipe rupture rate, high forming rate, and higher manufacturing efficiency.

Description

technical field [0001] The invention relates to the field of rod manufacture, in particular to a multifunctional rod cold drawing die set and a cold drawing method. Background technique [0002] At present, the design structure of most steel rods is a smooth cylindrical shape, and it is troublesome to install some external equipment on the steel rod. Therefore, the method of designing grooves on the steel rods is gradually introduced, and the external equipment is installed on parts. However, the design structure of the groove is also different. In order to ensure the portable installation and removal of the external equipment and the steel rod, the shape and position of the groove designed on the steel rod are also extremely important. [0003] The application number is 201820302520.1 for a portable street light pole structure. This patent also leaves grooves running through the upper and lower ends on the side wall of the street light pole. The opening end of the groove h...

AI Technical Summary

Problems solved by technology

[0005] In addition, at present, it is a common choice to manufacture rods by cold drawing steel pipes, and most of the rods manufactured by cold drawing are smooth cylindrical steel structures, and the rods are all cold drawn in one time. Forming, drawing force is large, drawing control is difficult, the shape and precision of the rod are difficult to be accurately controlled, and quality defects such as tube wall rupture or strain are prone to occur during cold drawing

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