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Square storage box forming method

A storage box and square technology, applied in the field of sheet metal, welded sheet forming and deformation control, and overall assembly, can solve problems such as low production efficiency, poor assembly accuracy, and difficult control of welding deformation, so as to improve size and shape accuracy, The effect of less machine addition and overcoming secondary thermal deformation

Active Publication Date: 2012-11-21
中国航天科工集团第二研究院二一〇所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In order to overcome the shortcomings of the prior art such as low production efficiency, difficult control of welding deformation and poor assembly accuracy, the invention provides a square tank forming method, which can control welding deformation, control skin bending accuracy, and improve welding quality

Method used

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Examples

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Comparison scheme
Effect test

example 1

[0084] This product has a total length of 7000mm, a height of 1111mm, and a width of 1068mm. The skin is made of 5A06-0 type II 5mm thick aluminum plate. It is a fully welded structure, and the total length of the weld is about 50m. It is required that the total length of the product be controlled within ±2mm, and the tolerance of the width and height of the box can be controlled within 0.5mm. The front and rear guide rails are installed inside the cabinet, and the height difference of the guide rails is guaranteed to be 163±0.1mm, and the symmetry is ±0.2mm.

[0085] Through the sheet metal forming process, first determine the bending coefficient, calculate the unfolded length according to the external dimensions, add 9.7mm to each bending, and control the length accuracy within ±0.5mm, smooth the burrs, and use the two ends of the following material as Bend the base edge, and bend it into a U shape at the same height.

[0086] The 5mm thick Al-Mg series 5A06-H112 aluminum a...

example 2

[0098] The total length of this product is 8000mm, the height is 1351mm, and the width is 1200mm. The skin is made of 5A06-0 type II 6mm thick aluminum plate. It is a fully welded structure, and the total length of the weld is about 55m. It is required that the total length of the product be controlled within ±2mm, and the tolerance of the width and height of the box can be controlled within 0.5mm. The front and rear guide rails are installed inside the box, and the height difference of the guide rails is guaranteed to be 174±0.1mm, and the symmetry is ±0.2mm.

[0099] Through the sheet metal forming process, first determine the bending coefficient, calculate the unfolded length according to the external dimensions, add 11.8mm to each bending, and control the length accuracy within ±0.5mm, smooth the burrs, and use the two ends of the following material as Bend the base edge, and bend it into a U shape at the same height.

[0100] The 6mm thick Al-Mg series 5A06-H112 aluminum...

example 3

[0110] The total length of this product is 5500mm, the height is 952mm, and the width is 865mm. The skin is made of 5A06-0 type II 4mm thick aluminum plate. It is a fully welded structure, and the total length of the weld is about 48m. It is required that the total length of the product be controlled within ±2mm, and the tolerance of the width and height of the box can be controlled within 0.5mm. The front and rear guide rails are installed inside the box, and the height difference of the guide rails is guaranteed to be 98±0.1mm, and the symmetry is ±0.2mm.

[0111] Through the sheet metal forming process, first determine the bending coefficient, calculate the unfolded length according to the external dimensions, add 7.9mm to each bending, and control the length accuracy within ±0.5mm, smooth the burrs, and use the two ends of the following material as Bend the base edge, and bend it into a U shape at the same height.

[0112] The 4mm thick Al-Mg series 5A06-H112 aluminum all...

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Abstract

The invention discloses a square storage box forming method. The method comprises the following steps: accumulating the thickness of a covered plate to the spread length of the covering flat before blanking; with the two ends of the blanking as the bending reference sides, bending at equal height to obtain U shape; welding the I-shaped welding groove with an inert gas protection welding method, wherein spot welding is performed in turn on two symmetric welding lines, and X radiographic inspection is performed on the welding joint after the welding; then eliminating the welding stress by stable thermal treatment and performing mechanical processing on the box body according to the divided horizontal and vertical geometric centre lines of the box body; and finally assembling all parts of the box body. Through the invention, the defect of local sinking of the front box section after welding is well controlled, the welding deformation is prevented, the reserved processing allowance of thesolid frame is reduced, the welding precision, welding quality and production efficiency are improved, and the cost is lowered.

Description

technical field [0001] The invention relates to the technical field of sheet metal, welded sheet forming, deformation control and overall assembly, in particular to a box forming method. Background technique [0002] The square storage box is usually made of thin plates through bending and welding to make a square cylindrical product, and the two ends are processed into a frame with reserved connection holes, which can be used to put the two end frames of the products that need to be stored into the storage box. The square storage box is equipped with two solid frames in the middle, which can complete the hanging of the upper end of the box and locking of the lower end, which is convenient for transportation. In order to prepare a square storage tank, the prior art generally includes the following steps: [0003] 1. Parts processing, including the following: [0004] 1. Sheet metal forming [0005] The forming method of large-scale sheet metal parts is the shape shearing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
Inventor 李碧芳张云燕刘江赵征史永禄李成禄
Owner 中国航天科工集团第二研究院二一〇所
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