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所在平台: Udemy |
课程主页: https://www.udemy.com/course/form-und-lagetoleranzen-kurs/
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课程名称: GD & T 基础知识 2024：初学者完全指南 课程概述：技术图纸通常不完整且不清晰，而清晰的图纸是确保工件功能得以实现、避免昂贵的修改或返工的重要保障。实现这一目标的重要工具就是所谓的“几何尺寸与公差”（Geometric Dimension and Tolerancing, GD&T）。几何尺寸与公差是以技术图纸为基础，清晰且功能性地规范零部件和装配体。通过使用各种公差，描述与工件或装配体功能相关的几何形状。本课程将介绍几何尺寸与公差的基础知识、意义和相较于过时方式（如加减公差或公差链）的优点。您将学习到各类公差类型的规则和符号，包括形状、方向、位置和跳动公差，并懂得如何将其应用于工件。课程结束后，精准应用理论上准确的尺寸（即TEDs）和功能基准及基准系统将成为您的强项。此外，本课程还将涵盖各种尺寸特征和维度元素的使用，您将学习如何用符合ISO 22081的新通用公差替代传统的距离和加减公差。
Technical drawings are often incomplete and unclear. Only clear drawings can ensure that the functions of a workpiece are fulfilled and that expensive revisions or reworking are avoided. An important tool for achieving this goal is the so-called "Geometric Dimension and Tolerancing". Geometric Dimension and Tolerancing build the basis for a clear and functional specification of components and assemblies with the help of technical drawings. The geometries of a workpiece or assembly relevant to its function are described with the aid of various tolerances. Geometric Dimension and Tolerancing are part of the standard system, the so-called Geometric Product Specification (ISO GPS).In this course, you will learn the basics, meaning and advantages of Geometric Dimension and Tolerancing compared to older procedures, such as plus-minus tolerances or tolerance chains. You will learn the rules and symbols of the separate tolerance types, such as form, orientation, location and run-out tolerances, and how to apply them to workpieces. The correct application of theoretically exact dimensions (so-called TEDs) and the specification of functional datums and datum systems will no longer be a problem after the course. This course also covers the use of various features of size and dimensional elements. You will also learn how to replace old-fashioned distances and plus-minus tolerances with the new general tolerance according to ISO 22081
