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Feature-based skin mirror-image milling technology decision method

A technology of process decision-making and mirror milling, which is applied in the direction of electrical program control and digital control, can solve the problems of large dependence and achieve the effects of high degree of automation, reduced workload and reduced processing costs

Active Publication Date: 2015-02-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to divide parts according to the special requirements of skin mirror milling equipment, and then make process decisions on the divided areas. At present, process decisions rely on the experience, skills, know-how, etc. of craftsmen, and are dependent on people. A series of problems such as relatively large, invent a feature-based skin mirror milling process decision method

Method used

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  • Feature-based skin mirror-image milling technology decision method
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  • Feature-based skin mirror-image milling technology decision method

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Embodiment Construction

[0041] A skin part is selected as an example, and the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] figure 1 It is a flow chart of the feature-based skin mirror milling process decision method of the present invention. As shown in the figure, the following steps are included:

[0043]1. Input the basic information required for process decision-making, including part model information, processing feature information and racking information.

[0044] 2. Divide the processing area according to the input information. Due to the special process requirements of the skin mirror milling equipment and in order to ensure the rigidity of the parts during the processing, it is necessary to divide the skin according to the area division rules, and carry out partition processing according to the division area . The specific regional division rules are as follows:

[0045] First of all, in order to en...

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Abstract

A feature-based skin mirror-image milling technology decision method includes, firstly, inputting part information, processing feature information and bent frame information, and automatically dividing a processing area according to area division rules; secondly, performing feature reconstruction on each divided area according to recessed-surface reconstruction rules; thirdly, ranking reconstructed features, and automatically deciding processing sequence and technological parameters; fourthly, constructing a technological recessed surface according to the technological parameters; finally, automatically deciding engagement and retraction parameters and machine-tool control commands for processing features according to skin mirror-image milling programming specifications. The method has the advantages that effective information link connection during skin part numerical control programming is realized by feature-based automatic technology decisions, feature-based numerical control programming in skin mirror-image milling is realized by combining the skin mirror-image milling numerical control programming specifications, dependency of programming on human experiences is weakened, programming standardability is guaranteed, programming quality and efficiency are improved, and production schedule is guaranteed.

Description

technical field [0001] The invention relates to a feature-based skin mirror image milling process decision method, in particular to a skin mirror image milling process decision method, which belongs to the technical field of numerical control processing. Background technique [0002] With the continuous change of aircraft structure design, chemical milling, the traditional processing method of skin parts, is no longer suitable for the processing of new aluminum-lithium alloy skin due to environmental pollution. At the same time, five-axis mechanical milling cannot adapt to the new The processing of skin with weight reduction design, so a new skin CNC machining method, the skin mirror milling method, has emerged. At present, the process decision-making of the skin mirror milling method relies on the experience, skills, and know-how of the craftsman, which is relatively dependent on people, resulting in low processing efficiency and high processing costs. The quality of proces...

Claims

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Application Information

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IPC IPC(8): G05B19/18
CPCG05B19/18
Inventor 李迎光郝小忠祝小军向兵飞刘少伟周冠妍周鑫
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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