Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for numerical control machining of large aircraft rib parts

A technology for parts and aircraft, applied in the field of CNC machining of large aircraft rib parts, can solve the problems of low processing efficiency, large deformation, increased deformation, etc., and achieve the effect of efficient processing

Active Publication Date: 2014-03-05
XI'AN AIRCRAFT INTERNATIONAL
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially with the large-scale development of aircraft, rib parts are gradually becoming larger and more complex, and some new manufacturing problems have emerged, mainly manifested in large deformation, difficult clamping, severe cutting chatter, and low processing efficiency.
Especially when the width of the rib is greater than 1 meter and the length is greater than 4 meters, the overall deformation increases, especially the arching deformation in the middle of the part seriously affects the reliability of the clamping; at the same time, the edge plates on both sides and the connected web belt There is a wide range of gaps, which greatly reduces the rigidity of this part, causing cutting chatter and greatly increasing the difficulty of manufacturing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for numerical control machining of large aircraft rib parts
  • Method for numerical control machining of large aircraft rib parts
  • Method for numerical control machining of large aircraft rib parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] This embodiment describes a method for CNC machining large-scale aircraft rib parts. The processing equipment is a large-scale five-coordinate high-speed gantry milling machine, and the machine tool has a general platform. The wool material is aluminum alloy pre-stretched plate, the width is greater than 1 meter, the length is greater than 4 meters, and the thickness is 70mm; the thickness of the web of the part is 1-3mm, and the thickness of the vertical rib and edge plate is 2-3mm. The processing method is carried out according to the following four stations:

[0022] The first surface for rough machining is the cavity surface, see figure 1 , figure 2 . Clamping adopts two-side pressing method, without special tooling. Before rough machining, the upper and lower planes and positioning holes 3 (through holes) at both ends should be prefabricated. Make some bolt holes 2, the positions are distributed on the passage holes on the parts web, the gaps of the edge plate...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A method for numerical control machining of large aircraft rib parts comprises a rough machining stage and a finish machining stage and is finished through four machining stations. The first rough machining face is a groove cavity face, rough machining of all of groove cavities is performed in a layer priority mode, and enough allowances are reserved at the bottoms of the groove cavities. The second rough machining face is a rib datum plane, and even rough machining allowances are reserved at all of positions. The finish machining face is a rib datum plane, positioning holes at two ends are re-adjusted after finish machining is finished, the second finish machining face is a groove cavity face, and finally process connecting plates at the gap positions of two-side edge plates and through hole positions of a web plate are separated.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a numerical control machining method for large aircraft rib parts. Background technique [0002] Rib parts are a type of typical parts on the aircraft, generally distributed on the wings, with complex structures and large numbers, and are one of the main parts of the aircraft wings. Rib parts generally have a double-sided structure, one side is the rib reference plane, which has a simple structure; Hyperbolic edge panels with steeply angled notches. [0003] Efficient and reliable manufacturing of rib parts is very important for aircraft development. Especially with the large-scale development of aircraft, rib parts are gradually becoming larger and more complex, and some new manufacturing problems have emerged, mainly manifested in large deformation, difficult clamping, severe cutting chatter, and low processing efficiency. . Especially when the width of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P13/02
Inventor 赵丽君李护航王欣萍佘敏娟
Owner XI'AN AIRCRAFT INTERNATIONAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com