Manufacturing method of nonlinear curved empennage
A manufacturing method and a nonlinear technology, applied in the manufacturing field of nonlinear arc tail fins, can solve the problems of excessive surface quality of the arc surface, difficult to guarantee the processing quality, insufficient rigidity, etc., so as to ensure the processing quality, improve the processing efficiency, avoid the The effect of positioning cumulative error
Active Publication Date: 2020-07-31
SHANGHAI RADIO EQUIP RES INST
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Problems solved by technology
Since the curved surfaces on both sides of the curved tail are extremely complex nonlinear curved surfaces, the processed curved surface cannot be completely consistent with the pre-designed curved surface, and because the curved tail is a thin-walled part, there will still be The problem of insufficient rigidity, the vibration generated during the processing will cause the surface quality of the arc surface to be out of tolerance, making it difficult to guarantee the processing quality
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[0028] The following combination Figure 1 to Figure 5 , the technical content, structural features, achieved goals and effects of the present invention will be described in detail through preferred embodiments.
[0029] The manufacturing method of the nonlinear curved empennage provided by the present invention comprises the following steps:
[0030] S1. Grinding the blank material to form a rectangular parallelepiped blank shape, which is used as a processing positioning reference for subsequent processes;
[0031] S2. Make a tooling that matches the shape of the blank in S1, as a position reference and a pressing device in the subsequent process; and assemble the shape of the blank on the tooling, and the tooling plays the role of clamping and positioning;
[0032] S3. Use a five-axis CNC machining center to rough-machine the upper and lower sides (the first side and the second side) of the blank shape, and initially form an arc-shaped tail;
[0033] S4, finishing the fir...
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Abstract
The invention relates to a manufacturing method of a nonlinear arc-shaped empennage. The manufacturing method comprises the steps that S1, a workblank material is ground and machined to form a cuboidworkblank appearance; S2, the workblank appearance is assembled on a tool matched with the workblank appearance; S3, a five-axis numerical control machining center is used for carrying out rough machining on a first side face and a second side face of the workblank appearance, and the arc-shaped empennage is preliminarily formed; S4, finish machining is carried out on the first side face of the arc-shaped empennage; S5, the first side face of the arc-shaped empennage is fixed to the tool, and finish machining is carried out on the second side face of the arc-shaped empennage; S6, a wire cut electrical discharge machining method is used for carrying out slotting, hole forming and cutting-off treatment on the arc-shaped empennage; and S7, a drill jig is used for positioning the arc-shaped empennage, side face through holes are drilled in the arc-shaped empennage, and the machined arc-shaped empennage is acquired. By means of the manufacturing method, five-axis linkage machining of a thin-wall nonlinear arc complex structure can be achieved, the machining quality is ensured, the machining efficiency is improved, and high efficiency and reliability are achieved.
Description
technical field [0001] The invention relates to a method for manufacturing a nonlinear arc-shaped empennage, which belongs to the technical field of thin-wall and nonlinear arc surface processing. Background technique [0002] As one of the key components of the aircraft, the curved tail is a complex structural part with thin walls and nonlinear arc surfaces. The blank material of the curved tail is TC4 forging. At present, there are two problems in the processing and manufacturing of the curved tail: 1. The two sides of the part are thin-walled and nonlinear curved surfaces with large angles, which is extremely difficult to process; 2. Since the part is a thin-walled part, the thickness of the thinnest part of the part is only 0.0028mm, so it is difficult to guarantee the processing stability and vibration resistance. [0003] At present, the production method for the curved tail is: use the ball end cutter of the three-axis CNC milling machine to process the curved surfac...
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IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/01
Inventor 何辰佳吴杰梁石
Owner SHANGHAI RADIO EQUIP RES INST