Due to the limitations of various conditions, most of the work of the early handboards is done by hand, which makes the handboards have a long construction period and it is difficult to reach the size requirements of appearance and construction drawings strictly, so the function of checking the appearance or construction rationality is greatly discounted. With the development of science and technology, the rapid development of CAD and CAM technology provides better technical support for the manufacturing of handboards, which makes the accuracy of handboards possible.
On the other hand, with the increasingly fierce social competition, the speed of product development has become the main contradiction of the competition, and the handmade can effectively improve the speed of product development. It is in this situation that the handboard manufacturing industry stands out and flourishes as a relatively independent industry.
According to the manufactured wrists, the hand board can be divided into manual hand board and numerical control hand board:
(1) handmade board: the main work is done by hand.
(2) CNC hand board: the main work is done with CNC machine tools.
According to the different equipment used, it can be divided into RP (rapid prototyping) hand plate and CNC hand plate.
A: RP hand board: mainly the hand board consumed by laser rapid prototyping technology.
B: CNC hand board: mainly the hand board consumed by the processing center.
Compared with CNC hand board, RP hand board has its own advantages: the advantages of RP hand board mainly show its rapidity, but it is mainly formed by stacking technology, so RP hand board is generally relatively rough, and it has certain requirements for the product wall thickness, for example, the wall thickness is too thin to be consumed.
The advantages of CNC hand board are that it can accurately reflect the information expressed in the drawing, and the appearance quality of CNC hand board is high, especially after the surface spraying and screen printing, even more glorious than the products consumed after opening the mold. As a result, CNC hand board manufacturing is becoming more and more the mainstream of the hand board manufacturing industry. According to the data used in manufacturing, it can be divided into plastic hand board and metal hand board:
(1) plastic hand board: the original material is plastic, mainly the hand board of some plastic products, such as television, display device, telephone, etc.
(2) metal handboards: the original materials are aluminum magnesium alloy and other metal materials, mainly handboards of some high-end products, such as notebook computers, advanced single player, MP3 player, CD player and so on.
The necessity of making handboards:
(1) inspection of appearance design
The hand board is not only visible, but also touchable. It can be very intuitive with real objects.
The method reflects the designer's creativity, and prevents the malpractice of "beautiful painting but not beautiful making". Therefore, hand board manufacturing is essential in the process of new product development and product shape grinding.
(2) inspection of structural design
Because the hand board can be assembled, it can directly reflect whether the structure is reasonable or not and the level of difficulty and ease of the device. It is convenient to find and deal with problems as early as possible.
(3) prevent the risk of directly opening the mold
Due to the high cost of mold manufacturing, compared with the large mold value of hundreds of thousands or even millions, if the unreasonable structure or other problems are found in the process of opening the mold, its loss is incredible. Hand plate manufacturing can prevent this kind of loss and reduce the risk of mold opening.
(4) make the product come to the market much earlier
Due to the advanced manufacturing of handboards, you can use handboards to publicize products before the mold is developed, and even prepare for sales and consumption in the early stage, so as to occupy the market as soon as possible.
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