Aircraft assembly fixture made of materials with different expansion coefficients
A technology based on thermal expansion and aluminum is applied in the field of aircraft assembly frames based on materials with different expansion coefficients. It can solve the problems of thermal expansion difference and achieve low manufacturing cost, short manufacturing cycle, and simple and reliable structure.
Inactive Publication Date: 2012-10-03
XIAN AIRCRAFT IND GROUP
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[0006] The purpose of this application is to provide an aircraft assembly frame based on materials with different expansion coefficients, which can solve the problem of thermal expansion difference between steel materials and aluminum materials in large-scale aircraft assembly frames, and can not only ensure product accuracy requirements, but also effectively Taking into account the cost of process equipment and work efficiency
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Embodiment Construction
[0020] Embodiment selects the assembly frame of aircraft wing wing box assembly for use, as figure 1 As shown, the assembly frame is composed of a steel support frame 1 and an aluminum frame 2. The steel support frame 1 is a large-scale frame structure welded by multiple steel beams and steel longitudinal beams, and its main function is to carry and support aluminum The quality frame 2 and the wing box of the aircraft wing, the aluminum frame 2 is a frame for directly positioning the wing box of the aircraft wing, including an upper beam 9 and a lower beam 10 . In order to ensure the consistency of the measurement datum, the ends of the upper beam 9 and the lower beam of the aluminum frame are respectively fixed on the steel support frame 1 through the fixed support 3, such as figure 2 , image 3 shown. In practice, due to the relatively large size of the wing box of the aircraft, the upper beam and the lower beam are respectively formed by butt joints of multi-section beam...
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The invention provides an aircraft assembly fixture made of materials with different expansion coefficients, aiming to solve the problems that the steel material and the aluminum material for making the large-size aircraft assembly fixture have low coefficient of thermal expansion. One end of the steel material of a first structure and one end of the steel material of a second structure are fixed relatively; the first structure and the second structure are connected in a sealing way by a mounting surface; and the other end of the first structure and the other end of the second structure can expand respectively. Due to the structure and the process, the product precision requirement can be met, and the equipment cost and the work efficiency can be guaranteed effectively.
Description
technical field [0001] The invention relates to the design and manufacture of an aircraft product assembly frame, and is particularly suitable for the aircraft assembly frame composed of materials with different expansion coefficients. Background technique [0002] During the manufacturing process of the aircraft, the assembly of components, parts and large parts of the aircraft is carried out on the assembly frame; therefore, the shape and position tolerance of the assembly frame will directly affect the assembly accuracy of the aircraft. [0003] In order to ensure that the rigidity and shape tolerance of the assembly jig are as consistent as possible with that of the aircraft body, the design and manufacture of the jig and the selection of its material are very important. If the jig is made of all steel, it cannot In use, if the all-aluminum frame method is adopted, the material cost is several times that of the steel material, and the cross-section is corresponding to th...
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IPC IPC(8): B25B11/00B23P21/00
Inventor 郝巨蒋馨孙朝辉惠增胜刘德刚
Owner XIAN AIRCRAFT IND GROUP