Bending tool assembly for multi-type metal profile and bending processing method

Abstract

The invention relates to the technical field of metal profile processing, in particular to a bending tool assembly for a multi-type metal profile and a bending processing method. The bending tool assembly comprises an upper die and two lower dies, which are used in a coordinated manner; each of the upper die and the lower dies is formed by symmetrically overlaying and splicing two annular metal pieces; contact parts matched with the section of the metal profile in shape are arranged on the circumferential surfaces of the two spliced annular metal pieces; the two annular metal pieces are detachably connected; and when the bending tool assembly is in the use state, the metal profile is matched with the contact parts on the circumferential surfaces of the upper die and the lower dies, and issubjected to bending forming under the action force of the contact parts. By using different combinations between the upper die and the lower dies, the bending processing of metal profiles with different section shapes can be realized, the processing, mounting and maintaining of the bending tool assembly are very simple, the production processes are greatly simplified, the processing precision isensured, the product quality is improved, and the bending tool assembly is suitable for batch production.

Description

technical field [0001] The invention relates to the technical field of metal profile processing, in particular to a bending tool assembly and a bending processing method for multi-type metal profiles. Background technique [0002] In daily production, it is very common to use the mechanical and physical properties of the profile's unique cross-sectional shape. For example, some metal profiles of various shapes (such as etc. Corner aluminum profile) as the reinforcement of the tank body. However, due to the mechanical and structural characteristics of the metal profile itself, when it is necessary to bend or even roll the ring (circle) along a certain direction of the metal profile, the operation becomes more difficult. [0003] In the prior art, there are mainly the following methods for bending metal profiles: (1) By heating the metal profiles and bending them in sections, this method easily leads to wave deformation and warping, uncontrollable shrinkage and high temperatu...

AI Technical Summary

Problems solved by technology

However, due to the mechanical and structural characteristics of the metal profile itself, when it is necessary to bend or even roll the ring (ring) along a certain direction of the metal profile, the operation becomes more difficult

[0003] In the prior art, there are mainly the following methods for bending metal profiles: (1) By heating the metal profiles and bending them in sections, this method easily leads to wave deformation and warping, uncontrollable shrinkage and high temperature. Changes in the metallographic structure inside the metal profile lead to quality problems such as brittle fracture and cracks (especially for aluminum profiles) in the subsequent use of the bent metal profile without warning, causing product safety hazards; (2) through the The inner side of the metal profile is partially removed, and then bent section by section to achieve a ring structure (see Figure 7 ), this method has the defects of complicated processing procedures, large cutting and welding deformation, and inconsistent arcs after welding, which inevitably produces "hot working" deformation, and the more complex the cross-sectional shape, the greater the deformation, and the more difficult it is to cut / weld. The more difficult it is to guarantee product quality, the adjustment of semi-finished products will also bring unfavorable factors, and the product accuracy will drop sharply; (3) Through the processing method of sheet metal cutting and tailor welding, that is, sheet metal parts are first cut into single parts, and then tailor welded out For the required structural parts, the processing procedure is complicated, and there are also problems such as large welding deformation, inconsistent arcs after welding, and difficulty in ensuring processing accuracy, bloated structure, increased self-weight, and unsightly appearance; , or partial cutting of profiles to remove materials and then welding, or sheet metal tailor welding, when the size, shape tolerance and appearance need to be guaranteed, not only special tooling must be used for clamping, but also the bending techniques of workers, The requirements for welding technology are also high, the production is time-consuming and laborious, and the product consistency is poor. These processing methods are not suitable for mass production and cannot meet the needs of modern enterprises for mass production.

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