外文翻譯機(jī)械設(shè)計理論(存儲版)
【正文】 n need. The invention, the discovery and technical knowledge itself certainly not necessarily can bring the advantage to the humanity, only when they are applied on the product can produce the benefit. Thus, we should realize whether people do need this kind of product before carry on the design in a specific product.The mechanical design must regard as a good opportunity for the mechanical designer to use creative ability carries on product design, the systematic analysis and formulate manufacture technology of the product. Grasping the project elementary knowledge is more important than memorizing some data and the formula. Merely using the data and the formula is insufficient to pletely decide all decision in a good design. On the other hand, they should carry on all operations precisely. For example, even if place a decimal point in wrong position, also can turn the correct design to wrong.New designs can have many flaws and problems unexpected, only these flaws and the question have been solved, can new product’s superiority be manifested. Therefore, a superior product born followed a higher risk at the same time. What should emphasize is that if designs itself does not request to use the brandnew method, it is not necessary to use the new method merely for the goal for transformation. In the preliminary stage of design, should allow designer fully to display the creativity, not restraint to each kind of restraint. Even if have many impractical ideas in early time, they can also be corrected before plan blueprint. Only in this way can not stop the innovation. Usually, must propose several sets of design proposals, and then perform the parison. It is possible that some ideas have been used in the final plan which is not accepted before. The psychologist frequently discusses the causes of how could people adapt to machine which operate. A designer’s personnel39。 If no, whether has a bigger assurance all permits in the cost and the time in the limit develops one kind of new material.In the functional design and the engineering design stage, needs to make a practical feasible design. Must draw up the quite plete blueprint in this stage, chooses and determines each kind of ponents the material. Usually must make the prototype or the working model, and carries on the experiment to it, the appraisal product function, the reliability, the outward appearance and the service maintenance and so on. Although this kind of experiment possibly can indicate, enters in the product to the production base in front of, should replace certain materials, but, absolutely cannot this point take not earnestly chooses the material the excuse. Should unify the product the function, earnestly carefully considers the product the outward appearance, the cost and the reliability. Has the achievement very much the pany when manufacture all prototypes, selects the material should the material which uses with its production in be same, and uses the similar man
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