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A Subassembly Extraction Method Based on Interference and Connection Relationship

A technology of sub-assembly and connection relationship, applied in the field of sequence planning in precision assembly, can solve problems such as not considering the interference between all parts, achieve high practical value and improve assembly efficiency

Inactive Publication Date: 2020-09-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interference detection methods used in these literatures are all interference relationship detection between related parts, without considering the interference between all parts, and the sub-assemblies are not all shown as ring structures in the connection diagram

Method used

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  • A Subassembly Extraction Method Based on Interference and Connection Relationship
  • A Subassembly Extraction Method Based on Interference and Connection Relationship
  • A Subassembly Extraction Method Based on Interference and Connection Relationship

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Embodiment Construction

[0035] Taking the extraction of sub-assemblies in diesel engine oil pump sub-components as an example, the specific implementation manner of the present invention will be described in detail in combination with technical solutions and accompanying drawings.

[0036] figure 1 For the diesel engine oil pump sub-components, the interference matrix between parts is established according to the spatial position relationship of the parts in the diesel engine oil pump sub-components ( figure 2 ) and connection matrix ( image 3 , taking the current orientation as the assembly orientation). Select part 11 as the first assembly part, and then analyze the assembly sequence related to part 1. Add part 11 to the pre-assembly part collection of part 1, and find I by traversing the interference matrix 11，1 |I 3，1 =11111, make part 3 a post-assembly part of part 1, and make part 1 a pre-assembly part of part 3. By analogy, after multiple traversals, the sequence relationship between pa...

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Abstract

The invention belongs to the field of sequence planning in precision assembly, and relates to a sub-assembly body extraction method based on an interference and support relation, in particular to a method capable of separating ion assembly bodies according to interference and support conditions of a to-be-assembled part. The method comprises: an interference matrix and a support matrix capable ofreflecting the spatial position relation between parts are established according to the position relation between the parts; Obtaining the sequence which must be obeyed among the parts through the interference matrix; According to the sequence and the support matrix, a conflicting part set is found, and a sub-assembly body capable of enabling assembly to be feasible is found; And according to thesupport matrix, finding the sub-assembly body with the characteristics of high cohesion and low coupling. According to the invention, the reasonable assembly process flow is convenient to customize, the assembly equipment is quickly set up, parallel assembly is realized during assembly, and the assembly efficiency is improved, so that the practical value is very high.

Description

technical field [0001] The invention belongs to the technical field of sequence planning in precision assembly, relates to a method for extracting subassemblies based on interference and connection relations, and is a method capable of separating subassemblies according to the interference and support conditions of parts to be assembled. Background technique [0002] In actual production, for the assembly of tiny devices, it is often faced with the situation of small production batches, short development cycles and continuous upgrading and improvement. Correspondingly, the assembly system requires the ability to quickly form equipment for production while ensuring assembly accuracy and efficiency. At present, the method of sequential assembly is usually adopted, and a large number of hardware modules are required to participate in the assembly in a small assembly space, which makes the structure of the assembly equipment complex and the reliability is reduced. Therefore, pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06F30/17
Inventor 任同群王晓东刘钰谯珊徐向东王晓飞钱志龙
Owner DALIAN UNIV OF TECH
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