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A method for processing aircraft skin sag features

A technology for aircraft skins and processing methods, applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve the problems of low CNC milling efficiency and pollution of the environment, so as to improve the service life, avoid environmental pollution, and improve processing efficiency. Effect

Active Publication Date: 2018-07-31
JIANGXI HONGDU AVIATION IND GRP
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the polluted environment of characteristic milling of aircraft skin sag and the low efficiency of CNC milling, the invention proposes a method for processing aircraft skin sag characteristics, which can effectively reduce the number of times of tool entry and exit, and improve processing efficiency

Method used

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  • A method for processing aircraft skin sag features
  • A method for processing aircraft skin sag features
  • A method for processing aircraft skin sag features

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Embodiment Construction

[0032] The present invention is further illustrated below in conjunction with the accompanying drawings and examples.

[0033] Select a typical sagging feature of aircraft skin (such as figure 1 Shown) as an example, the technical method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] The described skin sag feature processing method comprises the following specific steps:

[0035] Step 1. According to the design requirements, determine the milling tool parameters (such as figure 2 shown):

[0036] (1) Determine the radius r of the bottom corner of the tool according to the bottom angle surface Bottom_Angle of the skin depression, that is, the radius r of the bottom corner of the tool is equal to the radius of the bottom corner surface of the depression.

[0037] (2) Determine the tool radius R according to the design step tool difference requirements 1 , the specific method is as follows:

[0038] a. Calc...

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Abstract

The invention provides a method for processing aircraft skin sag features, which is characterized in that it comprises the following specific steps: Step 1, according to the design requirements, calculate the step tool difference of the skin sag features, and obtain the milling tool radius R1; Step 2, Determine the milling step distance Dis; step 3, determine the milling trajectory of the tool according to the shortest milling path, first, determine the milling trajectory of the sunken bottom corner surface, and secondly, determine the milling trajectory of the sunken bottom surface; step 4, set the milling trajectory of the sunken bottom corner surface and the sunken bottom surface The tool entry point and the tool retraction point complete the processing of a single sunken feature; step 5, according to the principle of the shortest milling path, complete the processing of multiple sunken features according to the zigzag route from bottom to top; step 6, processing and detection of skin sunken features. The invention can effectively reduce the number of times of cutting in and out, improve processing efficiency, and reduce vibration impact.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a method for processing aircraft skin sag features. Background technique [0002] At present, chemical milling is generally used in the precise manufacturing of skin sag features, but chemical milling has disadvantages such as environmental pollution, high energy consumption, and the consumed aluminum cannot be recycled. A small number of skin sag features are processed by numerical control, and the program generally uses helical milling. The number of feeds and retracts and empty strokes are large, and the processing efficiency is low. During the processing, the processing performance of the equipment is not stable enough, and there are sudden changes in feed speed and direction. If the situation, impact on the tool and the spindle, affecting the service life of the tool. Contents of the invention [0003] Aiming at the polluted environment of characteristic mil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/00B23Q17/20
Inventor 向兵飞黄晶徐明周造文蒙志凌张欢刘彤廖翔王建军
Owner JIANGXI HONGDU AVIATION IND GRP