Machining method for large cast titanium alloy diamond-shaped cabin shell

A technology for casting titanium alloys and processing methods, which is used in aircraft parts, transportation and packaging, etc., can solve the problems of inability to comprehensively detect the size of castings, uneven machining allowances, and weak product rigidity.

Active Publication Date: 2014-04-30
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The outer dimensions of the shell are large, the grid structure, the wall is thin, and the rigidity is weak;
[0006] (2) There are many coordination relationships between cabin shell dimensions;
[0007] (3) There is deformation and shrinkage in shell casting, and the profile, wall thickness uniformity, and machining allowance after casting are quite different from the theoretical state;
[0008] (4) There are defects in the casting, and repair welding is ...

Method used

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  • Machining method for large cast titanium alloy diamond-shaped cabin shell
  • Machining method for large cast titanium alloy diamond-shaped cabin shell

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Embodiment Construction

[0035] see figure 1 , a method for processing a large-scale cast titanium alloy diamond-shaped cabin shell provided by an embodiment of the present invention includes the following steps: Step 1, machining the measurement reference, leveling the rear end surface of the shell and processing it to see the light, and the light-seeing surface can reach 80%, Then align the outer four sides of the rhombus of the rear end frame, determine the center, and roughly process the four sides of the rhombus, so that each surface is exposed to 80% of the light. Step 2: Three-dimensional scanning and detection of the processed shell blank, determine the detection coordinate system according to the processed end face and the four sides of the rhombus, and use the internal shape of the shell as a reference to perform the best fitting between the shell casting model and the shell scanning model. Among them, three-dimensional scanning detects the quality of castings, and detects the internal and e...

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Abstract

The invention discloses a machining method for a large cast titanium alloy diamond-shaped cabin shell and belongs to the machining method for a complex piece. The machining method for the large cast titanium alloy diamond-shaped cabin shell includes the following steps: step 1, machining a base and measuring; step 2, carrying out three-dimensional scanning on a blank and detecting; step 3, carrying out self-adaption machining on a rough base; step 4, roughly machining the shape; step 5, detecting the size and performing three-dimensional scanning; step 6, performing heat treatment; step 7, performing three-dimensional scanning and detecting; step 8, finishing the base; step 9, finishing the shape; step 10, detecting the shell. The machining method for the large cast titanium alloy diamond-shaped cabin shell is capable of comprehensively analyzing the cast size precision and allowance, quickly determining the machining base, controlling the wall thickness uniformity and guaranteeing the shell quality, has small machining deformation, and enables the manufacturing cycle to be shortened.

Description

technical field [0001] The invention relates to a machining method for complex structural parts, in particular to a machining method for a large-scale cast titanium alloy diamond cabin shell. Background technique [0002] In the 1960s, countries around the world began to study and apply titanium alloy precision casting technology. After decades of research and application, it has been proved that titanium alloy castings are safe and reliable as aviation and aerospace components, and their performance and reliability are comparable to plastic deformation components. , and some are close to forgings, and the manufacturing cost and production cycle are significantly better than plastic deformation components. Moreover, the overall casting eliminates mechanical connections, reduces the number of components, reduces the weight of structural parts, and improves the integrity of the structure. [0003] With the upgrading of my country's aerospace products, the requirements for the...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/01
Inventor 张颖王跃强杨勇
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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