计算机辅助精度设计技术研究

发布时间：2018-07-11 21:31

本文选题：计算机辅助 + 精度设计　；参考：《太原科技大学》2011年硕士论文

【摘要】：在现代机械产品设计中,机械精度的确定是机械设计完整与否的重要判断指标。机械精度的选定不仅仅对机械产品的后期使用效果有着决定性的作用,他也对机械产品生产与制造中所引起的成本有着不可磨灭的联系。在当今计算机辅助机械制造设计技术领域不断的进步与发展中,计算机在辅助机械精度设计方面还处于人工设计与开发的初级水平。机械精度设计是控制机械产品的整个装配系统精度与可靠性的核心技术。但是这样的现状使得计算机辅助精度设计无法与现在CAD/CAM的发展情况相适应。尤其是在冶金等粗放型工业设计中,流水生产线设备在设计和生产定型时候都需要配套的尺寸链计算说明书。如何有效的运用计算机软件进行机械精度设计,并生成尺寸链计算说明,成为提高冶金机械研发能力,缩短研发周期必须得到解决的重要问题。本文论述了计算机辅助精度设计的总体方案,针对装配尺寸链分析计算中的问题,研究了尺寸链自动生成等关键技术,并开发了使用AutoCAD与Visual Studio 2005为设计软件的机械精度分析与设计系统,本论文主要的研究方向与内容是: 1在国内外学者研究成果的基础上,研究符合现代制造产品质量控制科学体系的计算机辅助精度设计系统模型。 2研究了尺寸链自动生成技术,包括尺寸链各环的自动生成、主要计算方法等相关内容。以我国冶金设备粗放型设计生产为例,深入探讨最新的机械精度设计、检测和保证方法及质量控制技术。 3分析与设计出计算机辅助机械精度查询与设计数据库总体方案,并且建立可以满足设计人员设计需要和方便使用的软件系统。 4深入研究讨论公差设计计算软件的一些关键模块例如形位公差模块,详细阐述了用ACCESS软件与VB6.0软件相结合开发的形位公差自动查询的机械精度数据库。开发了借AutoCAD2004为绘图软件平台,在AutoCAD中实现形位公差的自动标注。开发出的能够初步使用的模块,为软件的近一步开发完善打下基础。开发完成后的软件可在CAD的绘图中自动形成菜单栏并自动完成查询、标注功能。使用户更加方便的完成精度设计。
[Abstract]:In modern mechanical product design, the determination of mechanical precision is an important index to judge whether the mechanical design is complete or not. The selection of mechanical precision not only plays a decisive role in the later use of mechanical products, but also has an indelible connection to the costs caused by the production and manufacture of mechanical products. With the continuous progress and development in the field of computer-aided manufacturing design technology, the computer is still in the primary level of manual design and development in the field of mechanical precision design. Mechanical precision design is the core technology to control the accuracy and reliability of the whole assembly system of mechanical products. However, the current situation makes computer aided precision design unable to adapt to the development of CAD / CAM. Especially in the extensive industrial design such as metallurgy, the specification of dimension chain calculation is needed in the design and production of production line equipment. How to effectively use computer software to design mechanical precision and generate dimension chain calculation instructions has become an important problem that must be solved to improve the R & D capability of metallurgical machinery and shorten the R & D cycle. In this paper, the overall scheme of computer-aided precision design is discussed. In view of the problems in the analysis and calculation of assembly dimension chain, the key technologies such as automatic generation of dimension chain are studied. A mechanical precision analysis and design system based on AutoCAD and Visual Studio 2005 is developed. The main research directions and contents of this paper are as follows: 1 based on the research results of scholars at home and abroad, The computer aided precision design system model, which accords with the scientific system of quality control of modern manufacturing products, is studied. 2 the automatic generation technology of dimension chain, including the automatic generation of each ring of dimension chain, is studied. Main calculation methods and other related content. Taking extensive design and production of metallurgical equipment in China as an example, the latest mechanical precision design is discussed in depth. Testing and assurance methods and quality control techniques. 3. The general scheme of computer aided mechanical precision query and design database is analyzed and designed. And build a software system that can meet the design needs and convenient use of designers. 4 deeply study and discuss some key modules of tolerance design calculation software, such as shape and position tolerance module, The mechanical precision database of automatic querying of shape and position tolerance developed by access software and VB6.0 software is described in detail. Using AutoCAD 2004 as the drawing software platform, the automatic marking of shape and position tolerance is realized in AutoCAD. The module which can be used initially lays the foundation for the further development and perfection of the software. The developed software can automatically form menu bar in CAD drawing and automatically complete query and mark function. Make the user more convenient to complete the precision design.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH122;TP391.7

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