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

Molding process of five-meter scalloped segment of carrier rocket

A carrier rocket and forming technology, which is applied in the field of carrier rocket melon petal processing, can solve problems such as low production efficiency, low drawing speed, and complex structure, and achieve the effects of reducing production costs, improving production efficiency, and optimizing processing parameters

Inactive Publication Date: 2020-04-28
TIANJIN AEROSPACE CHANGZHENG ROCKET MFGCO
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product profile is a 5-meter-level double-curvature fitting surface, with a complex structure and many quality control points such as product surface quality and mechanical properties. At present, the 5-meter-level melon petals adopt secondary drawing technology, and the drawing rate is low. This leads to low production efficiency and seriously affects the overall production progress of the model

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
  • Molding process of five-meter scalloped segment of carrier rocket
  • Molding process of five-meter scalloped segment of carrier rocket
  • Molding process of five-meter scalloped segment of carrier rocket

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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

No PUM Login to View More

Abstract

The invention provides a molding process of a five-meter scalloped segment of a carrier rocket. A previous secondary stretch forming process is changed, the stretch forming rate is increased, and thequick primary stretching forming process is adopted. The molding process comprises the steps of blanking; quenching heat treatment; stretch forming; allowance removal and finishing; artificial aging;chemical milling; machining; surface treatment; and packaging and delivery. The stretch forming process specifically comprises the steps of pre-judging various types of stretch forming trajectories and stress and wall thickness distribution change under the stretch forming rate in advance through analog simulation, and carrying out discretization treatment on transverse and longitudinal displacement through the transverse and longitudinal small-displacement progressive stretch forming trajectories to make the transverse and longitudinal displacement uniformly distributed in the whole stretch forming process. According to the molding process, the quick one-time stretch forming technology is adopted, and machining parameters are optimized; on the premise of ensuring the machining precision and surface quality of the five-meter scalloped segment, the production efficiency of products is improved to the maximum extent, the forming time of the products is shortened from 3.5 h to 1.5 h, andthe production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of carrier rocket melon petal processing, and in particular relates to a forming process of a 5-meter-level melon petal of a carrier rocket. Background technique [0002] The 5-meter melon petal is an important sheet metal part of the launch vehicle. The product profile is a 5-meter-level double-curvature fitting surface, with a complex structure and many quality control points such as product surface quality and mechanical properties. At present, the 5-meter-level melon petals adopt secondary drawing technology, and the drawing rate is low. This leads to low production efficiency and seriously affects the overall production progress of the model. Contents of the invention [0003] In view of this, the present invention aims to propose a molding process of a 5-meter-level melon petal of a carrier rocket, by analyzing the existing melon petal production process, researching the one-time pulling shape techn...

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): B21D22/22B21C37/02
CPCB21C37/02B21D22/22
Inventor 李玉辰张下陆李继光张杰刚冯叶素胡德友王湃朱亚蓉卢润卓王斌龚立林白志刚李永胜
Owner TIANJIN AEROSPACE CHANGZHENG ROCKET MFGCO
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