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

A Construction Method of Assembly Tolerance Network

A technology of assembly tolerance and construction method, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems that affect the quality and efficiency of complex mechanical product design, and difficulty in coordination of tolerance design

Inactive Publication Date: 2017-03-29
XIJING UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of mature assembly tolerance design tools in the market, this makes the coordination of tolerance design difficult and affects the design quality and efficiency of complex mechanical products

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
  • A Construction Method of Assembly Tolerance Network
  • A Construction Method of Assembly Tolerance Network
  • A Construction Method of Assembly Tolerance Network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0048] The invention mainly solves the design problem of assembly tolerance of complex assemblies, and is used to realize the design of assembly tolerance and tolerance zone type, the construction of assembly tolerance network and the comprehensive optimization design of size and geometric tolerance with the minimum processing cost as the objective function.

[0049] see figure 1 As shown, it is a flow chart of the assembly tolerance design system of the present invention, the realization of the tolerance design system of the present invention builds the three-dimensional assembly model of the product based on the CAD system, and its design process includes:

[0050] Step a, deduce the assembly tolerance type and its corresponding tolerance zone type.

[0051] Firstly, the assembly constraint information of...

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 relates to a fitting tolerance network establishing method. The fitting tolerance network establishing method includes extracting fitting information of products from a three-dimensional model of the CAD (computer-aided design) system, generating fitting sequences of the product, and establishing a VGC (viscosity gravity constant) network on the basis of the VGC theory; reasoning to generate three fitting tolerance types via the corresponding relation of the VGC and the tolerance types and tolerance type information input from the step a, adding the fitting tolerance types to the VGC network and establishing a fitting tolerance network; displaying fitting sequence generated in the step b, the VGC network and the fitting tolerance network on the CAD system, and outputting the tolerance network information for tolerance optimization and design. The fitting tolerance design system is established on the CAD system platform, and comprehensive design of fitting dimensional tolerance and geometric tolerance is realized by means of information acquired from a product entity model.

Description

technical field [0001] The invention relates to a design method for mechanical assembly tolerances, in particular to a method for constructing an assembly tolerance network. Background technique [0002] In the prior art, tolerance design is an important task of product development, an important link between product functional requirements and manufacturing costs, and involves all stages of product life cycle. Assembly tolerance is an important part of tolerance design, which not only determines the assembly ability and quality of the product, but also affects the manufacturing cost and service life of the product. In the past decades, research on tolerance design has made great progress. In some CAD systems, it is already possible to specify dimensional tolerance values ​​for individual parts. However, there is no standard on how to realize the assembly tolerance design of assemblies, let alone a widely used method. Therefore, how to realize the automatic generation of a...

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 Patents(China)
IPC IPC(8): G06F17/50
Inventor 张毅程明科
Owner XIJING UNIV
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