Forming die and forming method for square pipe end part closing-in of diagonal bar

Abstract

The invention relates to a forming die for square pipe end part closing-in of a diagonal bar. The forming die is used for closing-in forming of the end part of a square pipe of the diagonal bar. The forming die comprises a lower punching and shearing die and an upper punching and shearing die, wherein the lower punching and shearing die comprises a cutter, the cutter comprises a body and a cutting edge which is protruded out of and is arranged on the top surface of the body, the cutting edge is arranged in the center of the top surface of the body, the cutting edge comprises a V-shaped cutting edge and two arc-shaped cutting edges, and the two arc-shaped cutting edges are connected with the V-shaped cutting edge and are respectively arranged on the two sides of the bottom of the V-shaped cutting edge; the upper punching and shearing die comprises a punching head and a punching and shearing mouth which is matched with the shape of the cutting edge; during manufacturing, the cutter stretches into the end part of the square pipe of the diagonal bar to be manufactured, and the lower punching and shearing die and the upper punching and shearing die are mutually matched to respectively form notch parts on a first side wall and a second side wall of the end part of the square pipe of the diagonal bar. The invention additionally provides a forming method for the square pipe end part closing-in of the diagonal bar by using the forming die.

Description

technical field [0001] The invention relates to the technical field of tower cranes, and in particular to a forming die and a forming method for closing ends of square tubes of diagonal braces. Background technique [0002] With the rapid development of my country's economic construction, the market demand for construction machinery, especially various cranes, is increasing. Tower crane, also known as tower crane, is a kind of full-turn rotating jib crane with tower structure. Tower crane is widely used in the field of construction engineering due to its advantages of large tonnage and high lifting height. The tower body structure of the tower crane, also known as the tower frame, is the main body of the tower crane structure. [0003] In the structural parts of tower cranes, square pipes are often butted with members with arc-shaped surfaces to form joints. For such joints, the ends of square pipes need to be made into arcs. The tower includes a plurality of standard sect...

AI Technical Summary

Problems solved by technology

[0005] However, the traditional processing technology is relatively primitive, that is, after the square tube is sawed and blanked, it is cut with a gas cutting gun to form a triangular incision 101 and an arc incision 102, and then it is formed by manual hammering to force the end to be formed, and each end Four weld zones 103 need to be welded (two weld zones 103 per sidewall)

This method of closing the diagonal brace is labor-consuming and time-consuming, and the forming effect is poor. It is difficult to ensure the uniformity of the shape and size of the formed diagonal brace 10, which affects the appearance quality and welding quality.

Images