Forming Technology of Wide Chord and Hollow Blade
A hollow blade and forming process technology, which is applied in the field of sheet metal forming, can solve the problems of poor blade profile and easy flashing, and achieve the effect of preventing local instability, reducing springback, and ensuring the required surface profile
Active Publication Date: 2022-01-04
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0003] The invention provides a forming process of wide-chord and hollow blades to solve the technical problems of easy flashing at the small rounded corners at both ends of the blades and poor blade profile obtained by the existing blade processing technology
Method used
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[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0042] figure 1 It is a schematic diagram of a certain engine vortex blade of the present invention; figure 2 It is a schematic diagram of a certain engine vortex blade A-A of the present invention; image 3 It is a schematic diagram of the closing device of the preferred embodiment of the present invention; Figure 4 It is a schematic diagram of the forming device of the preferred embodiment of the present invention.
[0043] Such as figure 2 with image 3 As shown, the preferred embodiment of the present invention provides a forming process for wide-chord and hollow blades to form space-distorted parts with small fillets in the lateral direction. The small fillets are the fillets of R1...
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Abstract
The invention discloses a forming process of a wide-chord and hollow blade, which comprises the following steps: performing round welding on the sheet material to form a tubular blank; performing closing treatment on the tubular blank on a closing device to adjust the radial dimension of the tubular blank ; Carry out the first stamping preforming of the closed tubular blank to form the first preform with small rounded corners on both sides; fill the first preform with wax and perform the second stamping preform to form the second Preform; fill the second preform with wax and carry out the third stamping preform to form the third preform; pour the low melting point alloy into the third preform to form the preform, and place the preform in the forming device Twisting angle forming is performed on the blade to obtain a shaped blade. The forming process of the wide-chord and hollow blades of the present invention avoids the problem of flashing on both sides of the torsion angle forming by closing the tubular blank, and reduces the springback of the blades after forming by pouring low-melting point alloys to ensure the profile of the blades. Contour requirements.
Description
technical field [0001] The invention relates to the technical field of sheet metal forming, in particular to a forming process of wide-chord and hollow blades. Background technique [0002] Such as figure 1 with figure 2 As shown, the vortex blade of a certain engine is made of GH4169. The characteristics of blade parts are relatively flat and not completely symmetrical on both sides, and the space is distorted, that is, there is a rotation angle of one section relative to the other section. Moreover, there are small rounded corners on both sides of the engine vortex blades. At present, the sheet metal is rolled and welded into a tubular blank, which is divided into multiple times of flattening, shaping, and wire cutting and trimming. However, there is a problem that the small rounded corners on both sides are easy to flash, and the blade profile formed is poor. Contents of the invention [0003] The invention provides a forming process of wide-chord and hollow blades...
Claims
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IPC IPC(8): B23P15/04B23H7/02B21D22/02B21D37/10B21D41/04B21D43/00
CPCB23P15/04B23H7/02B21D22/02B21D37/10B21D41/04B21D43/003
Inventor 章国斌李又春黄艳松王豪
Owner CHINA HANGFA SOUTH IND CO LTD