Precision milling system for fuselage skin

A fuselage skinning and milling technology, which is applied in the mechanical field, can solve problems such as large size, skewed skin incision, and mismatched joint surface size, so as to improve quality and stability, ensure product accuracy requirements, and ensure accurate manufacturing degree of effect

Inactive Publication Date: 2018-06-01
李福来
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AI Technical Summary

Problems solved by technology

Among them, because the skin of the aircraft fuselage has become a cylindrical structure, which has the characteristics of large size and low rigidity, ordinary CNC milling machines cannot meet the requirements of milling at all. method, relying on manual modification to complete
Due to the large workload, high production cost, long cycle and low efficiency of manual milling and modification, and the modification effect varies greatly depending on the work experience of the workers, it often cannot meet the accuracy requirements of the product (end surface flatness <1.6mm)
At the same time, the manual milling process is prone to problems such as skin incision skew, joint surface size mismatch, and local deformation in the milling area, which affects subsequent assembly quality

Method used

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  • Precision milling system for fuselage skin

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with drawings and embodiments.

[0014] like figure 1 , The milling system guide rail module and the milling end effector are composed of pneumatic control. The aircraft fuselage passes through the center of the guide rail horizontally, and the milling end effector feeds along the guide rail for one week to complete the skin cutting.

[0015] The guide rail module is placed vertically on the ground through the frame plate, and the whole is circular. It mainly includes double V-shaped guide rails and chain drive guide rails. The cutting end effector performs milling work along the normal direction of the fuselage skin. Ensure that each section of double V-shaped guide rail is within the required range through CNC machining, and at the same time set multiple OPT detection points on the upper surface of each double V-shaped guide rail. During installation, each OPT point is measured one by one by laser ...

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Abstract

The invention provides a precision milling system for fuselage skin. By means of installation, debugging and field application verification, the function of cutting the fuselage skin is realized whilesafety is guaranteed. With the adoption of the system, milling work of the fuselage skin can be completed efficiently and accurately, and manufacturing accuracy of an airplane product is guaranteed.Product precision requirements can be effectively met, product quality and stability are improved, labor intensity of an operator is reduced, and working efficiency is improved. Meanwhile, a supporting technology and experience are provided for allowance cropping of tube workpieces of the fuselage.

Description

technical field [0001] The invention relates to a precision milling system for fuselage skin, which is suitable for the mechanical field. Background technique [0002] In the aircraft assembly process, in order to ensure the accuracy of the final assembly, there will be a certain margin in the parts provided by the previous process. Therefore, after the butt joint of the fuselage panels is completed, in order to meet the matching requirements of the joint surface in the assembly process, it is necessary to perform milling modification on the fuselage skin. Among them, because the skin of the aircraft fuselage has become a cylindrical structure, which has the characteristics of large size and low rigidity, ordinary CNC milling machines cannot meet the requirements of milling at all. The method relies on manual modification to complete. Due to the large workload, high production cost, long cycle and low efficiency of manual milling and modification, and the modification effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00F15B11/16F15B13/06
CPCB23C3/00B23C2215/04F15B11/16F15B13/06
Inventor 李福来
Owner 李福来
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