基于知識(shí)的弧齒錐齒輪CAD系統(tǒng)的設(shè)計(jì)與研究
發(fā)布時(shí)間:2019-07-09 06:32
【摘要】:隨著科學(xué)技術(shù)的發(fā)展,現(xiàn)代化的工業(yè)機(jī)械正朝著大型化、自動(dòng)化、信息化方向發(fā)展,同時(shí),機(jī)械傳動(dòng)向大功率、高速重載、運(yùn)轉(zhuǎn)平穩(wěn)、低噪聲、高效率方向快速增長;↓X錐齒輪是實(shí)現(xiàn)相交軸運(yùn)動(dòng)傳遞的基礎(chǔ)元件,由于具有重合度大、傳動(dòng)平穩(wěn)、承載能力高等優(yōu)點(diǎn),被廣泛應(yīng)用于各種機(jī)器設(shè)備的相交和交錯(cuò)軸傳動(dòng),如汽車、工程機(jī)械、旋翼推進(jìn)的直升機(jī)、機(jī)床等。 弧齒錐齒輪具有復(fù)雜的數(shù)學(xué)模型和幾何外形,其設(shè)計(jì)過程中涉及大量的設(shè)計(jì)標(biāo)準(zhǔn)、公式、經(jīng)驗(yàn)系數(shù)等因素,導(dǎo)致在傳統(tǒng)設(shè)計(jì)方法中,從參數(shù)設(shè)計(jì)到圖紙繪制的每一個(gè)階段都需要查詢大量的設(shè)計(jì)手冊,依靠豐富的設(shè)計(jì)經(jīng)驗(yàn),重復(fù)大量相似的工作,嚴(yán)重影響了設(shè)計(jì)的效率和質(zhì)量。 本文針對(duì)弧齒錐齒輪設(shè)計(jì)過程中工作量大、設(shè)計(jì)知識(shí)不能共享、專業(yè)依賴嚴(yán)重等系列問題。將知識(shí)工程技術(shù)、數(shù)據(jù)庫管理技術(shù)和參數(shù)化繪圖技術(shù)引入弧齒錐齒輪設(shè)計(jì)過程。首先,對(duì)弧齒錐齒輪設(shè)計(jì)過程進(jìn)行了仔細(xì)地分析,明確了影響設(shè)計(jì)效率和質(zhì)量的因素,提出了基于知識(shí)的弧齒錐齒輪CAD系統(tǒng)體系結(jié)構(gòu)。然后,根據(jù)設(shè)計(jì)過程中領(lǐng)域知識(shí)的特點(diǎn),建立了由基于面向?qū)ο蟊硎镜陌咐龓旌突贑LIPS規(guī)范的規(guī)則庫組成的弧齒錐齒輪設(shè)計(jì)知識(shí)庫,并在此基礎(chǔ)上,建立了基于數(shù)據(jù)庫和特征矩陣的CBR與基于CLIPS的RBR構(gòu)成的CBR-RBR混合推理機(jī)制以及基于AutoCAD二次開發(fā)的參數(shù)化繪圖模型,通過算例的求解分析,驗(yàn)證基于知識(shí)的弧齒錐齒輪CAD設(shè)計(jì)系統(tǒng)在弧齒錐齒輪設(shè)計(jì)中的優(yōu)越性。最后,基于AutoCAD利用Microsoft Visual2005、ObjectARX、CLIPS等開發(fā)工具,開發(fā)了一個(gè)弧齒錐齒輪CAD設(shè)計(jì)系統(tǒng),詳細(xì)介紹了系統(tǒng)的目標(biāo)、系統(tǒng)的功能結(jié)構(gòu)、系統(tǒng)數(shù)據(jù)庫設(shè)計(jì)與軟件設(shè)計(jì) 本文的研究工作有助于減少弧齒錐齒輪設(shè)計(jì)工程中的工作量,減少對(duì)設(shè)計(jì)人員專業(yè)知識(shí)的依賴;有助于設(shè)計(jì)經(jīng)驗(yàn)的繼承和共享,提高設(shè)計(jì)的效率和質(zhì)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.
【學(xué)位授予單位】:廣東工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:TH132.41
[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.
【學(xué)位授予單位】:廣東工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類號(hào)】:TH132.41
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