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Method of manufacturing double-distortion arc box body structure

A technology of box structure and manufacturing method, which is applied in the direction of arched structure, dome structure, arched beam, etc., can solve the problems of low production efficiency, large space occupation, inaccurate manual segmental sampling, etc., and achieve the external dimension precise effect

Active Publication Date: 2007-11-28
CHINA 22MCC GROUP CORP
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a combination of computer blanking and planar CNC flame cutting machine cutting, which can be used on the AUTOCAD platform to solve the shortcomings of the prior art, such as inaccurate manual segmental sampling, large occupied space, and low production efficiency. Directly obtain accurate blanking data, which is directly cut by CNC machine tools

Method used

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  • Method of manufacturing double-distortion arc box body structure
  • Method of manufacturing double-distortion arc box body structure
  • Method of manufacturing double-distortion arc box body structure

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Embodiment Construction

[0031] The following is an example of the production of the entrance gate of Caofeidian in Tangshan.

[0032] 1. Blanking and cutting. Referring to attached drawing 2, first draw the four outer edges of the double-twisted arc-shaped box structure on the AUTOCAD platform according to the design requirements. As shown in Figure 3, according to the differential principle, any curve can be regarded as a small straight line segment with different slopes, and any straight line segment and a point outside the straight line determine a surface, so the spiral surface can be regarded as composed of a large number of triangles. See accompanying drawing 4, read out the vertices of each spatial triangle, merge each small triangle into a plane figure in the plane, read the triangle data in the plane into the plane CNC flame cutting machine, and the plane CNC flame cutting machine The data draws the cutting trajectory for cutting.

[0033] Please refer to Figure 1 for the specific process:...

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Abstract

The invention relates to a manufacturing method for double-twist arc box structure, belonging to the steel structure field, comprising material cutting aided by computer, cutting, fabricating for clamping fixture of box-sectioned beam and assembly of box-sectioned beam so on. The method makes use of computer to assisted lofting, cutting, designing for space clamping fixture and assembling for space clamping fixture. It can solve the problem very well that when material cutting of complicated-component spiral box structure is carried out in fabrication of metal structure, the dimension of material cutting is not accurate and assembly is not easy. Component with relative accurate figuration dimension is fabricated. It takes a higher guiding role for fabrication of similar engineering in future.

Description

Technical field: [0001] The invention relates to the field of building steel structures, in particular to a method for manufacturing a double-twisted arc-shaped box structure. Background technique: [0002] The blanking of the double-twisted arc-shaped box structure adopts manual lofting to take points in sections, adopts a one-to-one method to display each size on the floor, and then draws the actual figure of each size on the felt paper; the assembly adopts a special assembly For the platform, assemble in sections on the platform. Its disadvantages are; [0003] 1. Not accurate. The limited number of points for manual segmentation results in too few fitting points, and there is a large error between the fitting line and the theoretical spiral curve. [0004] 2. Heavy workload. Since there is no special drawing tool, a large number of points must be taken for manual fitting. [0005] 3. Occupy a large space. In order to reduce the error, the overall stakeout must be a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/32E04B1/24E04C3/40B23K7/00
Inventor 吴海
Owner CHINA 22MCC GROUP CORP
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