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所在平台: Udemy |
课程主页: https://www.udemy.com/course/engineering-drawing-part-iii/
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课程名称：工程制图第三部分 课程概述：本课程专注于学习技术/工程制图的基本要素。正如一句话所说，一张图片胜过千言万语，而一段动画则胜过千张图片。在课程结束时，您会发现从动画中学习是多么简单。这不仅仅是一个供消耗的学科，而是一种语言，允许各个工程领域的工程师进行交流。本课程在全球大多数学府中作为第一年的必修课程，适用于机械、土木、电气和计算机科学等所有工程学科。在工程制图第三部分中，我们将深入探讨以下主题： 1. 实体剖面：实体的剖面是通过沿特定平面切割或切割实体所得到的二维表示。它提供了对实体内部特征、尺寸和关系的清晰详细视图，这些在外部视图中可能不易显现。剖面特别适合说明复杂形状、隐藏特征和组件，使工程师能够有效分析、评估和传达设计意图。 2. 空心实体表面展开：空心实体，例如圆柱体、锥体、金字塔和球体，通常具有难以在二维图纸中准确表示的曲面。通过展开这些物体的表面，工程师可以获得一个可以轻松测量、制造和组装的平面表示。这种技术在钣金加工、木工、塑料成型和管道制造等行业中起着至关重要的作用。 3. 等轴测图：等轴测投影是一种轴测投影，在这种投影中，物体的所有三个维度都是以相同的比例和角度表示。等轴测投影中，物体在两个垂直轴周围以特定角度（通常为30度）旋转，形成一个清晰显示物体长度、宽度和高度的三维表示。 4. 透视投影：与等轴测投影不同，透视投影模拟了人眼在现实生活中感知物体的方式。它考虑到透视的概念，物体在远离观察者的方向上看起来会更小、更紧凑。通过在工程图中复制这种效果，透视投影提供了更准确的视觉体验表示。 通过本课程，学员将掌握工程制图的核心概念和技能，增强与他人沟通设计意图的能力。
This course is all about learning the elements of Technical / Engineering Drawing. A picture is worth a thousand words and an animation is worth a thousand pictures. And by the end of this course, you will realize how easy it gets to learn stuff from animations. This is not merely a subject to consume, but it's a language which allows engineers across various disciplines to communicate. This course is relevant across all disciplines of Engineering be it Mechanical, Civil, Electrical or Computer Science. This is a mandatory first year course in most of the universities globally. In Part III of Engineering Drawing, we will be covering the following topics in depth:1. Section of Solids: A section of a solid is a two-dimensional representation obtained by cutting or slicing the solid along a specific plane. It provides a clear and detailed view of the internal features, dimensions, and relationships within the solid, which may not be readily apparent from external views alone. Sections are particularly useful in illustrating complex shapes, hidden features, and assemblies, enabling engineers to analyze, evaluate, and communicate design intent effectively.2. Development of Surfaces of Hollow Solids: Hollow solids, such as cylinders, cones, pyramids, and spheres, often possess curved surfaces that are challenging to represent accurately in two-dimensional drawings. By developing the surfaces of these objects, engineers can obtain a flat representation that can be easily measured, manufactured, and assembled. This technique plays a crucial role in industries such as sheet metal fabrication, carpentry, plastic molding, and pipe manufacturing.3. Isometric Drawings: Isometric projection is a form of axonometric projection, which means that all three dimensions of an object are represented at the same scale and with equal angles. In isometric projection, the object is rotated at specific angles (usually 30 degrees) around two perpendicular axes, resulting in a 3D representation that shows all three dimensions-length, width, and height-equally and clearly.4. Perspective Projection: Unlike isometric projection, which maintains equal scales and angles for all three dimensions, perspective projection mimics the way the human eye perceives objects in real life. It takes into account the concept of perspective, where objects appear smaller and closer together as they recede into the distance. By replicating this effect in engineering drawings, perspective projection provides a more accurate representation of the visual experience.
