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Method for molding double hyperbolic streamlined bridge pier coping circular arc section space surface

A molding method and a streamlined technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems that the profiling method cannot be used, achieve accurate unfolding, and improve the molding quality

Active Publication Date: 2010-01-06
CRRC TANGSHAN CO LTD
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Problems solved by technology

Therefore, the traditional profiling method and the modern mold method cannot be used

Method used

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Embodiment Construction

[0012] The present invention is described in detail below in conjunction with embodiment.

[0013] The method for forming the space curved surface of the hyperbolic streamlined bridge pier pier cap circular arc section described in the present embodiment is carried out as follows:

[0014] ①Reasonable segmentation: In AutoCAD, using the principle of "substituting straightness for curvature", the entire 2750mm height of the pier cap arc is divided into 14 parts.

[0015] The division method of equal height is beneficial to the production of tooling and the simplicity of construction calculation. The maximum distance of 200mm makes the maximum distance between the arc and its corresponding chord is 1.5mm, which satisfies the complete approximation of the entity and is conducive to the smooth transition of the surface of the entity space.

[0016] ②Segmented flattening of spatial surfaces: use the basic spatial dimensions of each segmented surface obtained in AutoCAD to establis...

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Abstract

The invention relates to a shaping method of a space curved surface of a hyperbolic streamline shape bridge pier template; the shaping method includes the following steps: in AutoCAD, the radian of the space curved surface along the height direction is replaced by a segmented chord, and the maximum gap between a segmented arc and a corresponding chord is not larger than 1.5mm; a three-dimensional space model is established in Pro / E, and refining and flattening are carried out to obtain a precise expanded view of the space curved surface; the expanded view in Pro / E is transformed into a CAXA formatted file, proper kneading is carried out on the border splines of the expanded view to obtain an optimized expanded view of the curved surface, the optimized expanded view of the curved surface is transformed into program codes which are sent to a numerical control under water plasma cutting machine to finish cutting; a three-axis roller is adopted for arc rolling according to the radius of the arc corresponding to each segmented curved surface to shape the space curved surface; each shaped segmented space curved surface is treated with welding shaping on a clamping fixture from two sides to the middle to finish the manufacturing of the space curved surface. The shaping method of the invention can improve the shaping quality of the space curved surface, enhance work efficiency and reduce material waste in cutting.

Description

Technical field: [0001] The invention relates to a processing method of a hyperbolic streamlined formwork, in particular to a method for forming a space curved surface of a hyperbolic streamlined pier cap arc section. Background technique: [0002] The hyperbolic streamlined pier formwork is the most complicated pier formwork at present, and the biggest difficulty in its production lies in the shaping of the space surface of the arc section. The traditional blanking method of profiling gas welding cutting has a large error, which makes the quality of the overall curved surface forming very poor. The one-time press-fit molding method of the mold is only suitable for small-sized spatial surfaces. Therefore, the traditional profiling method and the modern mold method cannot be used. Invention content: [0003] The present invention aims to solve the above problems, and provides a method based on mathematical principles to rationally divide the entire space surface, and then...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/24G06F17/50
Inventor 雷贯标
Owner CRRC TANGSHAN CO LTD
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