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所在平台: Udemy |
课程主页: https://www.udemy.com/course/toleance-stack-ups-for-mechanical-engineers-with-six-sigma/
课程评论：没有评论
**课程名称：** 机械工程师公差堆叠与六西格玛 **课程简介：** 本课程专注于机械设计中的公差堆叠与设计，旨在提升产品质量，减少零件废品率。通过学习，您将掌握二维（2D）中的加减公差堆叠概念，从而能够评估装配体并提出改进建议以满足关键需求。尽管存在复杂的3D公差分析软件，但本课程强调2D分析的重要性，因为许多问题可以通过更简化的2D方法解决，为公司节省宝贵资源。 **课程内容：** * **基础知识：** 名义值、公差、标准差、正态分布的定义，以及公差分析在机械设计中的重要性。 * **公差堆叠图的绘制：** 学习如何创建用于公差分析计算的“回路”草图，并通过实践练习掌握此过程。 * **线性公差堆叠的三种方法：** * **最坏情况法 (Worst Case):** 适用于不允许任何废品的情况，成本最高，但用于关键应用。 * **统计法 (Statistical):** 允许一定的废品率，通过接受少量缺陷来降低成本。 * **六西格玛法 (Six-Sigma):** 综合考虑工艺分布、工艺能力以及性能损失等复杂因素，在不同质量水平下优化设计。 * **实践应用：** 课程为每种方法提供五个不同需求的装配体实例，要求学员运用所学概念，找到满足质量水平和解决关键间隙的合适设计。将提供Excel模板辅助计算。 **适用范围：** 本课程主要涵盖**加减公差**，但所学的知识也可应用于**几何公差**。 **课程特色：** 本课程基于讲师十年在航空航天行业的实践经验，涵盖了日常工作中与客户沟通设计变更、寻找合适供应商以及降低制造成本等方面的实用方法。
Stack up and Tolerance Design is all about quality, or in other words, the allowable parts to be rejected during the process. In escence, this results in an iterative process between the design department, manufacturing and the customer. In this course you will learn the concepts to master plus/minus tolerance stack ups in 2D. At then end, you will become a valuable member for your company because you will be capable to assess assemblies and propose changes to meet critical requirements. Although currently there are several software which run complex tolerance analysis in 3D, in my experience, most of the times you can simplify the problem with a 2D analysis, so as mechanical designer YOU MUST be capable of performing 2D analysis in order to save valuable resources to the company.First, you will learn the basics: The definition of nominal value, tolerance, standard deviation, normal distribution and the importance of tolerance analysis in mechanical design. Then. you will learn how to create the sketch (loop) to follow in the calculation of tolerance analysis. Several exercises will be provided so you can practice this process.Next you will Learn how to perform a linear stack ups with three approaches: Worst Case: When no rejections are allowed. This apporach results in the most expensive, but it is used in critical applications.Statistical: Some rejections are allowed. The costs are reduced because some defects will always be presented.Six-Sigma: Complex considerations such as process distributions, process caapability and loss of performance are taken into account to improve the design at different quality levels. Finally, for each approach I will provide you five assemblies with different requirements. You will need to apply the concepts to find the suitable design which meet the quality levels and solve the critical clearances. A template in excel will allow you to perform these calculations.Please note: We will cover ONLY plus/minus tolerances. But the knowledge is also applicable for geometric tolerances.This course is based in my own experience as designer in the aerospace industry for 10 years. I used this methods everyday to discuss initial changes with customer, find a suitable provider and reduce costs with manufacturing.
