基于工艺尺寸路径图的工艺路线优化

发布时间：2018-05-13 04:09

本文选题：工艺尺寸路径图 + 还原规则　；参考：《太原科技大学》2011年硕士论文

【摘要】：工艺路线优化对保证零件加工精度、提高劳动生产率和降低制造成本有重要作用。在零件加工方法和工序内容确定后,工艺路线的多样性主要体现在基准和加工顺序的可变性上,传统的工艺路线优化方法对基准和加工顺序的研究只是基于一些基本原则,缺乏一种有效、直观的基准与加工顺序的描述方法。工艺尺寸路径图是一种能较好解决此问题的方法。在零件加工阶段,影响零件的设计尺寸及余量精度的因素都可归结为两点:一是它们在加工过程中的形成路径,二是路径中的相关尺寸精度。目标尺寸的形成路径取决于基准的选择和加工顺序的安排,将这些问题抽象为工艺尺寸路径图。本文通过工艺尺寸路径图对基准与加工顺序进行研究,首先介绍了工艺尺寸路径图的建立方法及应用,以直观的表达每一个目标尺寸的形成路径,通过分析说明尺寸路径图还可描述全部基准和加工顺序,判断工艺路线优劣,对工艺尺寸路径图进行优化,并还原成更合理的工艺路线。从尺寸路径图中还能获取到完整的尺寸模型,在全体设计尺寸及余量的驱动下,自动生成其相应阶段的相关尺寸及公差,从而形成一套“尺寸路径优化与尺寸公差计算”为一体的设计方法。
[Abstract]:The optimization of process route plays an important role in ensuring the machining accuracy of parts, increasing labor productivity and reducing manufacturing cost. After the determination of parts processing methods and working procedure contents, the diversity of process routes is mainly reflected in the variability of datum and processing sequence. The traditional process route optimization method studies the datum and processing sequence only based on some basic principles. There is a lack of an effective and intuitive description of the reference and processing sequence. The process size path diagram is a good method to solve this problem. In the process of machining, the factors that affect the design size and margin accuracy of the parts can be attributed to two aspects: one is their formation path in the process of machining, the other is the relative dimensional accuracy in the path. The formation path of the target size depends on the selection of the datum and the arrangement of the processing sequence. These problems are abstracted as the process dimension path diagram. In this paper, the datum and the processing sequence are studied through the process dimension path diagram. Firstly, the method and application of the process dimension path diagram are introduced, which can express the formation path of each target dimension intuitively. By analyzing and explaining that the dimension path diagram can also describe all the datum and processing sequence, judge the quality of the process route, optimize the process size path diagram, and restore it to a more reasonable process route. A complete dimension model can also be obtained from the dimension path diagram. Driven by all design dimensions and margins, the relevant dimensions and tolerances of the corresponding stages can be automatically generated. Thus, a design method of dimension path optimization and dimension tolerance calculation is formed.
【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】：TH162.1

【参考文献】