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Single-curvature cover machining method

A processing method and skinning technology, applied in the field of single curvature skin processing, can solve the problems of high processing cost, serious environmental pollution, low efficiency, etc., and achieve the advantages of reducing pollution, improving processing efficiency and processing accuracy, and reducing processing cost Effect

Inactive Publication Date: 2014-07-16
AVIC SAC COMML AIRCRAFT
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The existing skin forming technology, especially the manufacture of large thin skins, the traditional processing method is to perform chemical milling after rolling. The chemical milling method has serious environmental pollution, high processing cost and low efficiency, and can no longer meet the requirements of the existing batches. Requirements for rapid production

Method used

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Embodiment Construction

[0019] In large civil aircraft, single-curvature skin accounts for more than 70% of the total skin, so single-curvature skin processing plays a particularly important role in the aviation field. The invention discloses a single curvature skin processing method, comprising the following steps:

[0020] a. Blanking, blank the sheet on the shear plate machine according to the size of 200-240mm more than the edge of the skin to form a skin part; find out the arc position to be bent, and use a marker to mark the line. For simple skin, the required bending arc is the specified arc. For complex skin, such as single-curvature three-curvature skin and single-curvature thick skin, the required bending arc is smaller than the specified arc.

[0021] b Rolling, choose a CNC three-axis roller bed, wipe the rollers and skin parts, and then roll and bend, so that the three rollers of the roller bed can be driven and rotated at the same time, and the upper roller is fed in a straight line, 4-...

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Abstract

The invention discloses a single-curvature cover machining method. The single-curvature cover machining method comprises the following steps of feeding, rolling bending, flattening and milling. Secondary rolling bending is required to be performed on a single-curvature three-radian cover with high machining difficulty and a single-curvature thick cover with high machining difficulty after the single-curvature three-radian cover and the single-curvature thick cover are milled. The single curvature cover machining method can be used for machining a simple single-curvature cover or a complex single-curvature cover, chemical milling can be changed into mechanical milling, the single-curvature cover machining efficiency and the single-curvature machining precision are guaranteed, and the machining cost is effectively saved.

Description

technical field [0001] The invention relates to the field of skin processing, in particular to a single curvature skin processing method. Background technique [0002] The existing skin forming technology, especially the manufacture of large thin skins, the traditional processing method is to perform chemical milling after rolling. The chemical milling method has serious environmental pollution, high processing cost and low efficiency, and can no longer meet the requirements of the existing batches. Requirements for rapid commissioning. However, in the existing method of bending the skin first and then milling it by machine, due to the selection of the roller bed in the rolling bending process, the number of feeds and the amount of feed during the bending are not appropriate, resulting in insufficient bending of the skin parts 1. Rolling and bending cannot reach the required radian, resulting in the inability to process and scrapping the skin. During the milling process of ...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00B23P2700/01
Inventor 崔修平梁壮吴杨
Owner AVIC SAC COMML AIRCRAFT
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