I did not come into contact with the plastic design, to understand the mechanical design and traditional design of plastic parts and fittings of the (metal material) are different, from what kind of material, design, drawing standards, labeling etc.. Please engage in plastic design industry heroes pointing!
The design of plastic parts is quite different from metal parts. First of all, a wide range of plastic products, plastic parts, injection molding and other processing methods, suitable for mass production. Secondly, the plastic parts of the connection, using bayonet and so on, if the strength is not enough, auxiliary metal insert connection. Rarely threaded directly. Plastic parts should be considered demoulding, shrinkage, cooling variant, etc., consider equal thickness. Experience is more important than computation.
The difference between plastic parts design and mechanical design:1: Material: mechanical design is mainly involved in metal materials, plastic is non-metallic, the performance is very different.2, standard: plastic parts with a metal parts of different implementation standards, accuracy is relatively poor, with the relative precision, tolerance range selection is different, marking basically the same, slightly characteristic.3: Connection: plastic parts connection and metal parts connection, compared with its characteristics, generally used: card, buckle connection, insert connection, thread connection, deformation, connection, etc..4 and other: the most important parameters in the design of plastic parts are shrinkage calculation and deformation control, as well as the determination of taper and slope parameters for injection molding.
Material selection, according to experience, can not, then check the mechanical manual, drawing standards are also divided into metal box, plastic? Without distinction. In fact, the plastic design and metal design, the key lies in what is their manufacturing process! I don't see how long your mechanical design of metal has been done!I hope my answer will help you. Thank you for taking it
You send the amount of plastic parts should refer to the use of injection molding mold design, injection molding parts need to know the relevant knowledge of mold structure, mold design or you out of difficult processing, or even can be processed but need to increase the cost a lot of plastic design with rubbing wear and broken, less inclined to top. That will increase the cost of.
Different materials of plastic properties vary greatly, to take into account the relatively soft plastic, high shrinkage, not good to step up, fine machining difficult. There is no obvious difference between the drawings, mainly because of the different processing techniques.
