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Machining method of thin-wall abnormally-shaped metal casting

A technology for special-shaped metals and castings, which is applied in the field of castings processing, and can solve problems such as out-of-tolerance contours and uneven wall thicknesses of products

Active Publication Date: 2020-06-12
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a processing method for thin-walled special-shaped metal castings, which solves the technical problems of the existing overall molding processing method for thin-walled special-shaped metal castings, such as excessive contour and uneven wall thickness.

Method used

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  • Machining method of thin-wall abnormally-shaped metal casting
  • Machining method of thin-wall abnormally-shaped metal casting
  • Machining method of thin-wall abnormally-shaped metal casting

Examples

Experimental program
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Effect test

experiment example 1

[0141] like figure 2 As shown, it is a structural schematic diagram of the end view of an aluminum alloy casting with a cross-sectional dimension of 1170×821 and an axial dimension of 1200 mm, which is integrally cast and processed from an aluminum alloy. The figure includes the end 1 of the aluminum alloy casting, the inner cavity 2 of the aluminum alloy casting and the aluminum alloy casting shell 3, wherein the end 1 of the aluminum alloy casting includes a half end face, an end face contact hole, a high-precision hole system and an end face.

[0142] like image 3 shown, for figure 2 Schematic diagram of the partial structure of the inner cavity, the figure includes: the inner cavity profile 21 of the aluminum alloy casting and the inner cavity mounting part 22 of the aluminum alloy casting, and the inner cavity profile 21 of the aluminum alloy casting has multiple inner meshes of different sizes. The lattice surface has a thickness of 2.5mm to 3.5mm.

[0143] specifi...

experiment example 2

[0187] like figure 2 As shown, it is a schematic view of the structure of an aluminum alloy casting with a cross-sectional dimension of 1170×821 and an axial dimension of 1200mm, which is integrally cast and processed from aluminum alloy. The figure includes the end 1 of the aluminum alloy casting, the inner cavity 2 of the aluminum alloy casting and the shell 3 of the aluminum alloy casting, wherein the end 1 of the aluminum alloy casting includes a half end face, an end face connecting hole, a high-precision hole system and an end face.

[0188] like image 3 shown, for figure 2 A schematic diagram of the local structure of the inner cavity of the aluminum alloy casting, which includes: the inner cavity surface 21 of the aluminum alloy casting and the inner cavity mounting part 22 of the aluminum alloy casting, and the inner cavity surface 21 of the aluminum alloy casting has multiple inner nets of different sizes Grid curved surface, its thickness is 2.5mm ~ 3.5mm.

[...

experiment example 3

[0233] like figure 2 As shown, it is a schematic view of the structure of an aluminum alloy casting with a cross-sectional dimension of 1170×821 and an axial dimension of 1200mm, which is integrally cast and processed from aluminum alloy. The figure includes the end 1 of the aluminum alloy casting, the inner cavity 2 of the aluminum alloy casting and the shell 3 of the aluminum alloy casting, wherein the end 1 of the aluminum alloy casting includes a half end face, an end face connecting hole, a high-precision hole system and an end face.

[0234] like image 3 shown, for figure 2 A schematic diagram of the local structure of the inner cavity of the aluminum alloy casting, which includes: the inner cavity surface 21 of the aluminum alloy casting and the inner cavity mounting part 22 of the aluminum alloy casting, and the inner cavity surface 21 of the aluminum alloy casting has multiple inner nets of different sizes Grid curved surface, its thickness is 2.5mm ~ 3.5mm.

[...

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Abstract

The invention discloses a machining method of a thin-wall abnormally-shaped metal casting. By the adoption of the machining method of the thin-wall abnormally-shaped metal casting, the whole thin-wallabnormally-shaped metal casting is cast and formed, and then machining operation of the appearance outline, the end and inner cavity installation parts of a casting blank is conducted according to the follow-up steps. The corresponding machining allowances are reserved in the rough machining process, the semi-finishing process and the finish machining process of the machining process, the machining standard is timely adjusted according to the wall thickness uniformity degree each time machining operation is accomplished, and the material object correction of the machining standard is accomplished on a machine tool through re-machining operation of a technological pin hole, and therefore the accumulative error, caused by the micro deviation, of the follow-up machining operation can be eliminated as much as possible in the machining process of the large-size thin-wall abnormally-shaped metal casting, the outline degree of the appearance outline can be guaranteed under the condition thatthe situation that the end and the inner cavity installation parts are machined in place is guaranteed, and the uniformity of the wall thickness can also be guaranteed.

Description

technical field [0001] The invention relates to the technical field of casting processing, in particular to a processing method of a thin-walled special-shaped metal casting. Background technique [0002] In the aerospace manufacturing industry, large-sized, thin-walled, and special-shaped parts are often encountered. For large-sized, thin-walled, and special-shaped parts, compared with the traditional skeleton + skin processing method, casting and machining are used. The overall molding method has the advantages of less material removal, pre-release of deformation, high processing efficiency, and less manual operation workload. For example, the current common thin-walled special-shaped aluminum alloy castings are firstly casted with aluminum alloys as a whole, and then the contours, end faces, assembly surfaces, and assembly holes are machined through machining to finally obtain molded products. [0003] However, there are still technical problems of unqualified contours a...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 郭玉张守明邵峰
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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