Tailor-welding method for stand columns of pressure machine tool

Abstract

The invention relates to the technical field of forging equipment, and particularly relates to a tailor-welding method for stand columns of a pressure machine tool. The tailor-welding method comprisesthe following steps that 1, U-shaped boxes are spliced, the splicing size of the stand columns is reserved, and reserved side plates and guide rail plates at the openings of the U-shaped boxes are not installed; 2, the U-shaped boxes are paired in pairs, and every two U-shaped boxes are welded together in a back-to-back mode through a plurality of connecting iron plates; 3, the interior of each U-shaped box is welded; 4, the connecting iron plates are removed, the paired U-shaped boxes are separated, and the reserved side plates and the guide rail plates are welded to each U-shaped box to form the stand columns; and 5, stress relief annealing is conducted on the stand columns. By the adoption of the tailor-welding method, the problems that in the prior art, after each stand column is welded, the corresponding reserved side plate is laterally bent and deformed, manual flame leveling is needed, a large amount of time is wasted, the stand columns are laterally bent and twisted to be deformed, the stand columns are shrunk in the length direction, and consequently the machining allowance is insufficient can be solved.

Description

technical field [0001] The invention relates to the technical field of forging equipment, and the specific field is a tailor welding method for a column of a press machine tool. Background technique [0002] The press belongs to a kind of forging equipment, which is widely used in many fields such as automobile manufacturing, engineering machinery, aerospace, etc. Among them, the large press adopts a combined body, which is composed of an upper beam, a column, a base, and a slider. [0003] For the columns of large presses, the cross-sectional form is mainly a box-shaped structure close to a square, and the number is designed to be 4 or 2 in pairs. The columns are thin and long, and most of them are larger than 4 meters. The support plate of the bolt is also long, and most of them are welded with thick plate opening groove, which causes a large amount of welding and affects the deformation of the column, so it is very important to choose a reasonable tailor welding method. ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a tailor welding method for the column of a press machine tool to solve the side bending deformation of the reserved side plate after welding of a single column in the prior art, which requires manual flame leveling, wastes a lot of time, and the side bending and twisting deformation of the column , the length direction shrinks, leading to the problem of insufficient machining allowance

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