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GB/T 38929-2020: General requirements of mirror milling process for civil aircraft skin parts
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38929-2020 | English | 409 |
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General requirements of mirror milling process for civil aircraft skin parts
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GB/T 38929-2020
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PDF similar to GB/T 38929-2020
Standard similar to GB/T 38929-2020 GB/T 34520.8 GB/T 43376 GB/T 38825 Basic data | Standard ID | GB/T 38929-2020 (GB/T38929-2020) | | Description (Translated English) | General requirements of mirror milling process for civil aircraft skin parts | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | V18 | | Classification of International Standard | 49.040 | | Word Count Estimation | 22,290 | | Date of Issue | 2020-06-02 | | Date of Implementation | 2020-12-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38929-2020: General requirements of mirror milling process for civil aircraft skin parts---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(General requirements for mirror milling process of civil aircraft skin)
ICS 49.040
V18
National Standards of People's Republic of China
General requirements of mirror milling technology for civil aircraft skin
2020-06-02 release
2020-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General requirements 2
4.1 Personnel 2
4.2 Material 2
4.3 Equipment and Tooling 2
4.4 Security Protection 2
5 Feature definition and classification 2
5.1 Feature definition 2
5.2 Classification of Sag Features 4
5.3 Window feature classification 5
5.4 Hole feature classification 5
5.5 Classification of boss features 5
5.6 Contour feature classification 6
6 Programming method 6
6.1 General 6
6.2 Mirror milling programming of face features 7
6.3 Mirror milling programming of depressed features 7
6.4 Window feature programming 7
6.5 Milling programming of hole features 8
6.6 Contour feature milling programming 9
7 Process control 10
7.1 Process flow 10
7.2 Process preparation 10
7.3 Compiling CNC program 10
7.4 Post-processing and processing simulation 11
7.5 Preparation before skin milling 11
7.6 Actual profile acquisition and program modification 11
7.7 Skinning and milling 11
7.8 Disassembling the skin 11
8 Quality Control 11
Appendix A (informative appendix) The allowable error reference value of the geometric accuracy test item of the skin mirror milling equipment is 13
Appendix B (informative appendix) Skin mirror image structure accuracy detection method 14
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Aircraft Standardization Technical Committee (SAC/TC435).
This standard was drafted by. Jiangxi Hongdu Aviation Industry Group Co., Ltd., Nanjing University of Aeronautics and Astronautics, Xi'an Aircraft Industry (Group)
Limited liability company, China Aviation Comprehensive Technology Research Institute.
The main drafters of this standard. Xiang Bingfei, Li Yingguang, Guan Yujie, Xu Ming, Wei Minzhen, Kou Jie, Zhou Zuowen, Xiong Yong, Hao Xiaozhong, Xiong Xu, Ouyang Ping,
Liu Xu, permission.
General requirements of mirror milling technology for civil aircraft skin
1 Scope
This standard specifies the general requirements for mirror milling of skin parts, feature definition and classification, programming methods, process flow, and quality control.
This standard applies to the mirror milling of metal skin parts for civil aircraft. Other products can be implemented by reference.
2 Normative references
The following documents are essential for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 4863 Basic terminology of mechanical manufacturing process
GB/T 6477 Metal cutting machine terminology
3 Terms and definitions
The terms and definitions defined in GB/T 4863 and GB/T 6477 and the following apply to this document.
3.1
Mirror milling
The position and posture of the milling tool and the position and posture of the back support device are approximately mirror images at the same time, and synchronized and coordinated movements are completed to complete the
Leather processing, as shown in Figure 1.
Figure 1 Schematic diagram of mirror milling
3.2
Jacking device holdersystem
Follow the mirror movement of the milling spindle head, and have the function of maintaining the rigidity of the processing area, and can monitor the skin processing in real time during the processing
The thickness of the device.
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