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1.工业手板知识普及（1., industrial knowledge popularization）.doc

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1.工业手板知识普及（1., industrial knowledge popularization）

1.工业手板知识普及（1., industrial knowledge popularization） Basic knowledge of industrial hand What is in the end, many people do not know, do not know what is in the end of the representative, I did a test, there are more than 90% people have not heard of her plate, especially from the college students, because no contact and heard. Heres a brief introduction: 1, what is the hand board? In the process of product design, we completed the design drawings, the one thing that most want to do is to want to know their own design is what kind of things made in kind, appearance and their design is consistent, the structural design is reasonable. Hand made is the product of this demand. Popular point of view, the board is in the absence of open mold under the premise, according to product appearance, structural drawings made of one or more, used to check the appearance or structure of the reasonableness of the function of the model. On the other hand, with the increasingly fierce social competition, the product development rate has gradually become the main contradiction of competition, and the hand made manufacturing can effectively improve the speed of product development. It is in this case, the hand manufacturing industry will come to the fore and become a relatively independent industry and flourish. 2, the classification of the hand: Early hand due to various conditions, the main performance is completed by hand in most of its work, make the hand of long period and difficult to strictly meet the appearance and structure of the size of the drawings, so check the appearance or structure rational functional discount. With the progress of science and technology, the rapid development of CAD and CAM technology provides better technical support for the manufacturing industry, which makes the accuracy and manufacturing speed of the hand board higher and higher. 3, according to the means of production, the hand can be divided into manual hand and CNC hand board: 1) hand hand board: i