Reading the mechanical pattern is to correctly imagine the shape of the machine according to the pattern, that is, to understand the mechanical picture, which is the imaging process from plane to space. In this process, the cultivation of spatial imagination is very important, because in practice The objects in production are all three-dimensional, and the problem-solving thinking activities occur and develop in three-dimensional space. Therefore, the teaching of drawing courses must focus on strengthening the cultivation of spatial thinking ability. AutoCAD not only has powerful two-dimensional drawing function but also convenient three-dimensional solid modeling. Auto-CAD is easier to convert between plane and three-dimensional. Using this software can better cultivate students' spatial imagination. One is to use a Boolean operation, that is, a joint intersection difference operation, to simulate a spatial imagination with a computer. The so-called union, that is, the two objects are combined; the intersection, that is, when the two objects overlap, only the common part is retained, and the remaining parts are removed; the difference is that the first object is subtracted from the second object. section. In the AutoCAD drawing software, use the mouse to sketch the outline of the object, and then stretch it to appear the three-dimensional shape. After the above three operations, objects with more complex shapes can be formed. These functions of AutoCAD will be faster. Improve students' spatial imagination and interest in learning. Second, AutoCAD can generate axonometric drawings and the software has a "sketch" function, which makes the axonometric images appear realistic with grayscale display. In addition, the software can adjust the observation point and observe the model from different angles. That is to say, after drawing an object with a computer, it can automatically generate any one to observe the isometric view of the object. The axonometric map has the characteristics of strong stereoscopic effect and clear structure, so drawing axonometric map is one of the important means to cultivate spatial imagination. Drawing axonometric drawings with AutoCAD is much more convenient than drawing axonometric drawings manually, which helps save students' drawing time and improve learning efficiency. Drawing mechanical drawings and AutoCAD integration The mechanical pattern is used to correctly express the shape of the machine, that is, the ability to draw engineering drawings, that is, the ability to express graphics, is another important content that should be mastered in the drawing class. The graphic expression ability of the drawing class refers to the comprehensive application ability of the theoretical knowledge of the graphics, including the expression of the shape and size of the part structure, the expression of the working principle of the assembly, the skill and skill of drawing. It is closely related to spatial thinking ability. It is a kind of theory and practical ability to analyze and solve problems. Especially drawing skills is a basic skill of drawing. For students majoring in numerical control technology, drawing ability should be Basic ability. According to the development trend of engineering drawings and the actual needs of enterprises, the integration of mechanical drawing and AutoCAD is very necessary. Drawing computer graphics as a must-have, and using it as an important means of reforming traditional mechanical drawings and a powerful measure to compress time. Traditional mechanical drawing is to improve drawing skills and drawing quality through a large number of manual instrument drawing. Although it is an effective method, it does not meet the actual needs of current business students. Thanks to the modern and advanced means of computer graphics, the training of manual instrument drawing can be greatly reduced, and the hand-drawn drawing and computer graphics can be enhanced, so that part of the time can be compressed to adapt to the current high-level two-year numerical control technology. The actual situation of professional drawing lessons. Ending the development level and application level of computer science and technology has become an important symbol of the degree of social modernization. At the same time, whether or not computer application knowledge and ability has become an important indicator of the qualification of younger generation of scientific and technological personnel in modern society. Develop new compound teaching methods in teaching, integrate mechanical drawing with AutoCAD drawing software, stimulate students' interest in learning, improve learning efficiency, ensure teaching quality in case of less time and content, and combine CAD skill level Exams will improve the overall quality of students and lay a solid foundation for their further development in the future to meet the needs of future scientific and technological progress. (Finish) Reflective Piping,Stretch Jersey Fabric ,Knit Fabric Online ,Cotton Jersey Knit Fabric Reflective Safety Clothing Co., Ltd. , http://www.nbreflectivetape.com