Calculation method for unfolding and blanking of y-shaped symmetrical crescent-rib steel bifurcation pipe

A calculation method and symmetrical technology, applied in the direction of complex mathematical operations, geometric CAD, special data processing applications, etc., can solve problems such as many calculation parameters, complex calculation process, and many calculation steps, so as to simplify the calculation process, reduce calculation steps, The effect of improving blanking accuracy

Active Publication Date: 2022-05-03
DONGFANG ELECTRIC MACHINERY
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Problems solved by technology

The traditional unfolding and blanking calculation is carried out in the asymmetric bifurcation pipe model, which has many calculation parameters, many calculation steps and needs to be transformed back and forth in multiple coordinate systems, and the calculation process is extremely complicated

Method used

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  • Calculation method for unfolding and blanking of y-shaped symmetrical crescent-rib steel bifurcation pipe
  • Calculation method for unfolding and blanking of y-shaped symmetrical crescent-rib steel bifurcation pipe
  • Calculation method for unfolding and blanking of y-shaped symmetrical crescent-rib steel bifurcation pipe

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] like Figure 4 As shown, the Y-symmetrical crescent-ribbed steel branch pipe passes through a main cone 1 and two branch cones 2, and a crescent plate 3 is welded between the two branch cones 2, the main cone 1, branch cones 2 and the crescent plate 3 are jointly welded to form a Y-shaped tubular structure, which has the following two structural characteristics, namely: 1) the steel branch pipe is completely symmetrical about the vertical plane where the bisector of the support cone angle is located; 2) the main cone and the support cone It has a co-cutting sphere whose intersecting line i...

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Abstract

The invention provides a Y-shaped symmetrical crescent rib steel bifurcation pipe expansion and blanking calculation method, including establishing a coordinate system; establishing the cone surface equation of the main cone pipe in the coordinate system of the main cone pipe and the cone surface equation of the branch cone pipe in the coordinate system of the branch cone pipe ; Respectively obtain the coordinates of the intersection point of the main cone pipe and the branch cone pipe in the coordinate system of the main cone pipe and the branch cone pipe coordinate system; obtain the intersection equation of the plane where the main cone pipe and the intersecting line are located; obtain The intersection equation of the plane where the branch cone and the intersecting line are located; find the equation of the plane of the crescent plate in the coordinate system of the branch cone; solve the main cone tube blanking and calculate and solve the cone element line family equation of the main cone; Tube blanking solution and calculation to solve the conical line family equation of the branch cone tube; error analysis and compensation for the missing tip point of the branch cone tube blanking, the beneficial effect of the present invention is that the complex coordinate transformation process is avoided, and the calculation process is simple and The blanking accuracy is high, and the blanking error is compensated to avoid the risk of material shortage.

Description

technical field [0001] The invention relates to the technical field of water turbine design, in particular to a Y-shaped symmetrical crescent-rib steel bifurcated pipe expansion and blanking calculation method. Background technique [0002] Water diversion steel bifurcation pipe is an important hydraulic component in water diversion power station. In pumped storage power station, due to the high water head and complicated two-way operation conditions of the unit, the water diversion steel bifurcation pipe is particularly important and occupies a large share of the project cost. . Key manufacturing technologies such as blanking, forming, and welding of water diversion steel branch pipes are also where a pumped storage power station can gain a favorable position in market competition. The traditional unfolding and blanking calculation is carried out in the asymmetric bifurcated pipe model, which has many calculation parameters, many calculation steps and needs to be transform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F17/12
CPCG06F17/12G06F30/17
Inventor 熊欣李小兵
Owner DONGFANG ELECTRIC MACHINERY
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