基于计算机辅助设计的尺寸精度研究

发布时间：2018-06-08 05:43

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

【摘要】：尺寸精度设计,是机械精度设计中的一项重要工作。它对提高产品的性能、质量以及降低生产成本都有重要影响。随着计算机应用技术的发展,计算机辅助尺寸精度设计在国内外已经受到越来越广泛的重视,成为当前学术界和工程界研究的热门技术之一。合理选用尺寸的极限与配合,既要深入地掌握极限与配合的国家标准,又要对产品的技术要求、工作条件以及生产制造条件等进行全面分析,同时还要通过生产实践和科学实验不断积累经验,这样才能合理设计尺寸精度。本课题研究的目的是提高产品装配成功率,降低成本,缩短产品开发周期。通过综合分析产品设计要求、制造装配要求、制造成本等多种因素,应用公差优化理论,进行公差优化设计,以获得最佳的尺寸精度设计。 AutoCAD软件虽然能实现手册查询、标准查询和公差标注等功能,但是使用复杂,设定麻烦,缺乏一种简单便捷的尺寸精度快速查询和标注的功能。为了方便设计人员,提高设计效率,本文提出了改进的思想,设计了一种尺寸精度自动查询与标注的新软件。通过Visual Basic.NET编程实现尺寸公差的自动查询和快速标注,克服了机械设计人员反复查表和多次进行参数设定的不足,具有省时、准确、高效等特点,也使机械设计智能化、设计手册电子化,提高了绘图和设计的效率,同时增强了AutoCAD的应用功能,具有一定的实用价值。
[Abstract]:Dimensional precision design is an important work in mechanical precision design. It has an important effect on improving the performance and quality of the product and reducing the production cost. With the development of computer application technology, computer aided dimensional precision design has been paid more and more attention at home and abroad. It is not only necessary to thoroughly grasp the national standards of limit and cooperation, but also to make a comprehensive analysis of the technical requirements, working conditions and manufacturing conditions of the products, and at the same time to continuously accumulate experience through production practices and scientific experiments. Only in this way can the dimension accuracy be reasonably designed. The purpose of this research is to improve the success rate of product assembly, reduce the cost and shorten the product development cycle. Through the comprehensive analysis of product design requirements, manufacturing assembly requirements, manufacturing costs and other factors, the tolerance optimization theory is applied to optimize the tolerance design to obtain the best dimensional precision design. The functions of standard query and tolerance marking are complicated and difficult to set, and it lacks a simple and convenient function of quick query and marking of dimension precision. In order to facilitate designers and improve design efficiency, this paper presents an improved idea and designs a new software for automatic query and marking of dimension precision. The automatic query and fast marking of dimension tolerance are realized by Visual basic .NET programming, which overcomes the shortcomings of repeated table searching and parameter setting by mechanical designers. It has the characteristics of saving time, accuracy, high efficiency and so on. It also makes the mechanical design intelligent. The electronic design manual improves the efficiency of drawing and design, and enhances the application function of AutoCAD, which has certain practical value.
【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

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