Automobile covering part sheet metal forming technology optimizing method based on STL grid feature recognition

A technology for automobile panels and grid features, which is applied in the field of sheet metal stamping process optimization for automobile panels, can solve the problems of low standardization, difficulty in obtaining structural features, low efficiency of stamping process design, etc., and achieves increased stability and consistent pattern. , The effect of improving process design efficiency and quality

Active Publication Date: 2017-04-26
WUHAN UNIV OF TECH
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of difficult acquisition of structural features, low stamping process design efficiency, and low degree of standardization in the existing stamping process design of automobile panel panels, the present invention p

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
  • Automobile covering part sheet metal forming technology optimizing method based on STL grid feature recognition
  • Automobile covering part sheet metal forming technology optimizing method based on STL grid feature recognition
  • Automobile covering part sheet metal forming technology optimizing method based on STL grid feature recognition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] In a preferred embodiment of the present invention, a method for optimizing the sheet metal stamping process of automobile panels based on STL grid feature recognition, such as figure 1 shown, including the following steps:

[0034] S1. Convert the vehicle panel solid model into an STL file composed of triangular meshes through CAD software, read the STL file, import the triangular mesh model of the part, and obtain the vertex coordinates and exterior of each triangular mesh according to the description method of the file field normal vector coordinates;

[0035]S2. Use the triangle grid c...

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 discloses an automobile covering part sheet metal forming technology optimizing method based on STL grid feature recognition. The method comprises the following steps: firstly reading a part STL grid model to obtain part curve information, obtaining part shape features through the curve information, constructing a part feature tree according to a feature topological relation, classifying the features according to feature processing categories, and determining respective sheet metal forming technology for different features. According to the method, a process knowledge database is taken as a core, optimization for the part sheet metal forming technology is finally completed depending on the obtained feature tree and the sheet metal forming technology route of each feature parameter decision-making part under the mechanism support of knowledge reasoning, the features can be extracted from the automobile covering part sheet STL model automatically, and the sheet metal forming technology routes are designed, so that a large amount of repeated work of technologists can be reduced, the work efficiency is effectively improved, and the technology preparation time is shortened.

Description

technical field [0001] The invention belongs to the technical field of CAD / CAPP, and relates to a stamping process design of complex thin-plate parts such as automobile panels, in particular to a method for optimizing stamping process of automobile panels based on STL grid feature recognition, which can be obtained from CAD The structural features of the parts that affect the forming process design are extracted from the model and the stamping process design is quickly completed. Background technique [0002] The vast majority of automotive panels are formed by stamping. The forming process is often completed by a combination of drawing, punching, bending, flanging, and shaping. The process design process is very complicated. The traditional stamping process design of automobile panels is mostly completed by process designers relying on their own experience. Due to the different levels of process designers, it is often difficult to guarantee the design quality, and even the ...

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
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20G06F30/333G06F2119/18
Inventor 宋燕利华林兰箭路珏吕祝星
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap