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A method of laser bending and forming of knife switch knife holder seat

A knife switch and bending forming technology, which is applied to forming tools, metal processing equipment, manufacturing tools, etc., to achieve the effects of reducing manufacturing costs, saving copper consumption, and shortening the research and development cycle

Active Publication Date: 2021-09-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the problem that the laser beam is blocked during the process of laser forming the knife holder, resulting in laser interference, the present invention proposes a method for laser bending and forming of the knife switch knife holder

Method used

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  • A method of laser bending and forming of knife switch knife holder seat
  • A method of laser bending and forming of knife switch knife holder seat
  • A method of laser bending and forming of knife switch knife holder seat

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Embodiment

[0032] Embodiment: The process of laser bending and forming the sample of the knife switch knife holder seat of the copper-steel laminate.

[0033] (1) Use laser to cut 1mm thick copper-steel laminate into 68mm for S1, 13.5mm for S2, 16mm for S3, 7.5mm for R, 3mm for H1, 7.5mm for H2, 15mm for H3, the diameter of 4 holes d is 4mm, and its size distribution is as follows figure 1 shown. The path distribution of the sample is the same as figure 2 , where paths L1 and L2 are 11mm from both ends, paths L3 and L4 are 9mm from paths L1 and L2, paths L5 and L8 are 13.2mm from paths L3 and L4, paths L5~L7 are connected with paths L8~ The distance between L10 is 0.8 mm, and the path L11 and the path L9 are located at the same position.

[0034] (2) Clamp the clamping part in the middle of the rough plate 2 with the clamp 4, and place it horizontally on the laser processing workbench.

[0035] (3) Adjust the position of the laser head 1 to find the scanning reference point A; set t...

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Abstract

The invention provides a method for laser bending forming of a blade switch blade holder, which can be used for rapid bending forming of the blade switch blade holder without a mold. First, based on the temperature gradient mechanism, when the laser scans the metal sheet, the laser scanning line area will generate uneven thermal stress due to the temperature gradient, causing the sheet to bend toward the laser beam, and at the same time, the scanning area will generate new residual stress and strain distribution. Secondly, based on the buckling mechanism, the laser scanning is performed on the pre-bending back position, and the plate is bent away from the laser beam due to the influence of the residual stress and strain generated by the pre-bending. When laser forming the sample of the tool holder, by changing the laser parameters and the number of laser scans of each path, combined with appropriate path planning, high-precision laser rapid bending of tool holders of different sizes and shapes can be realized.

Description

technical field [0001] The invention belongs to the field of laser bending forming of thin metal plates, in particular to a method for forward bending a copper-steel laminate based on a temperature gradient mechanism, and a method for performing laser reverse bending on a pre-bent plate based on a buckling mechanism, specifically a gate The method of laser bending forming of the knife switch tool holder is based on the path planning according to the geometric characteristics of the tool holder, which can be used to realize the mold-free flexible forming of closed workpieces such as the knife switch tool holder. Background technique [0002] Knife switch knife holder is a part of fixed blade, its shape is complicated, it is usually produced by mold in mass production, and the design cycle is long. Compared with the traditional mold processing method, laser bending forming is a flexible, moldless, no external force, non-contact rapid prototyping technology, which is easy to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D31/00B21D37/16
CPCB21D31/005B21D37/16
Inventor 王续跃尤泉孙涛
Owner DALIAN UNIV OF TECH
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