基于知识的弧齿锥齿轮CAD系统的设计与研究

发布时间：2019-07-09 06:32

【摘要】：随着科学技术的发展,现代化的工业机械正朝着大型化、自动化、信息化方向发展,同时,机械传动向大功率、高速重载、运转平稳、低噪声、高效率方向快速增长。弧齿锥齿轮是实现相交轴运动传递的基础元件,由于具有重合度大、传动平稳、承载能力高等优点,被广泛应用于各种机器设备的相交和交错轴传动,如汽车、工程机械、旋翼推进的直升机、机床等。弧齿锥齿轮具有复杂的数学模型和几何外形,其设计过程中涉及大量的设计标准、公式、经验系数等因素,导致在传统设计方法中,从参数设计到图纸绘制的每一个阶段都需要查询大量的设计手册,依靠丰富的设计经验,重复大量相似的工作,严重影响了设计的效率和质量。本文针对弧齿锥齿轮设计过程中工作量大、设计知识不能共享、专业依赖严重等系列问题。将知识工程技术、数据库管理技术和参数化绘图技术引入弧齿锥齿轮设计过程。首先,对弧齿锥齿轮设计过程进行了仔细地分析,明确了影响设计效率和质量的因素,提出了基于知识的弧齿锥齿轮CAD系统体系结构。然后,根据设计过程中领域知识的特点,建立了由基于面向对象表示的案例库和基于CLIPS规范的规则库组成的弧齿锥齿轮设计知识库,并在此基础上,建立了基于数据库和特征矩阵的CBR与基于CLIPS的RBR构成的CBR-RBR混合推理机制以及基于AutoCAD二次开发的参数化绘图模型,通过算例的求解分析,验证基于知识的弧齿锥齿轮CAD设计系统在弧齿锥齿轮设计中的优越性。最后,基于AutoCAD利用Microsoft Visual2005、ObjectARX、CLIPS等开发工具,开发了一个弧齿锥齿轮CAD设计系统,详细介绍了系统的目标、系统的功能结构、系统数据库设计与软件设计本文的研究工作有助于减少弧齿锥齿轮设计工程中的工作量,减少对设计人员专业知识的依赖；有助于设计经验的继承和共享,提高设计的效率和质量。
[Abstract]:With the development of science and technology, modern industrial machinery is developing in the direction of large-scale, automation and information. At the same time, mechanical transmission is growing rapidly in the direction of high power, high speed and heavy load, stable operation, low noise and high efficiency. Spiral bevel gear is the basic element to realize the motion transmission of intersecting axle. because of its advantages of large coincidence, stable transmission and high bearing capacity, it is widely used in intersecting and staggered shaft transmission of various machinery and equipment, such as automobile, construction machinery, rotor propulsion helicopter, machine tool and so on. Spiral bevel gear has complex mathematical model and geometric shape, and a large number of design standards, formulas, empirical coefficients and other factors are involved in the design process, which leads to a large number of design manuals need to be queried at every stage from parameter design to drawing, relying on rich design experience and repeating a lot of similar work, which seriously affects the efficiency and quality of design. This paper aims at a series of problems, such as heavy workload, unable to share design knowledge and serious professional dependence in the design process of spiral bevel gear. Knowledge engineering technology, database management technology and parametric drawing technology are introduced into the design process of spiral bevel gear. Firstly, the design process of spiral bevel gear is analyzed carefully, the factors that affect the design efficiency and quality are clarified, and the CAD system architecture of spiral bevel gear based on knowledge is put forward. Then, according to the characteristics of domain knowledge in the design process, a knowledge base of spiral bevel gear design is established, which is composed of case base based on object-oriented representation and rule base based on CLIPS specification. On this basis, the mixed reasoning mechanism of CBR based on database and feature matrix and RBR based on CLIPS, as well as the parametric drawing model based on AutoCAD secondary development are established. The superiority of knowledge-based spiral bevel gear CAD design system in spiral bevel gear design is verified. Finally, based on AutoCAD, a CAD design system of spiral bevel gear is developed by using Microsoft Visual2005,ObjectARX,CLIPS and other development tools. The goal of the system, the functional structure of the system, the research work of system database design and software design are helpful to reduce the workload in spiral bevel gear design engineering and reduce the dependence on the professional knowledge of designers. It is helpful to inherit and share design experience and improve the efficiency and quality of design.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41

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