machine design

Mechanical design, according to the requirements of the use of the machinery of the working principle, structure, movement, force and energy transfer mode, the various parts of the material and shape size, lubrication methods conceived, analyzed and calculated and translated into specific description As a manufacturing basis for the work process.
Mechanical design is an important part of mechanical engineering, mechanical production is the first step, is to determine the mechanical properties of the most important factor. The goal of mechanical design is to design the best machinery under a variety of limited conditions, such as material, processability, theoretical knowledge, and computational tools, ie, to optimize the design. Optimal design requires comprehensive consideration of many requirements, typically: best performance, minimum manufacturing cost, minimum size and weight, reliability in use, minimum consumption, and minimal environmental pollution. These requirements are often contradictory, and the relative importance of them varies according to the type and use of the machinery. The designer's task is to weigh the severity of the situation, take into account, so that the design of machinery has the best comprehensive technical and economic effects. In the past, design optimization relied primarily on the designer's knowledge, experience, and vision. With the basic theory of mechanical engineering and the development of new disciplines such as value engineering and systems analysis, the accumulation of technical and economic data of manufacture and use, and the popularization and application of computer, optimization gradually abandon subjective judgment and rely on scientific calculation.
The design of industrial machinery, especially the whole and the whole system of mechanical design, must be attached to the relevant industrial technology and difficult to form an independent discipline. So the emergence of agricultural machinery design, mining machinery design, pump design, compressor design, turbine design, internal combustion engine design, machine tool design and other professional mechanical design disciplines.