【正文】 chieve the work piece handling, steering, transmission or operation of brazing, spray gun, wrenches and other tools for processing and assembly operations since, which has more and more attracted our attention. Machine hand is to imitate the manual part of the action, according to a given program, track and requirements for automatic capture, handling or operation of the automatic mechanical devices. 濟南大學畢業(yè)設計外文資料翻譯 2 In real life, you will find this a problem. In the machine shop, the processing of parts loading time is not annoying, and labor productivity is not high, the cost of production major, and sometimes manmade incidents will occur, resulting in processing were injures. Think about what could replace it with the processing time of a tour as long as there are a few people, and can operate 24 hours saturated human right? The answer is yes, but the machine hand can e to replace it. Production of mechanical hand can increase the automation level of production and labor productivity。 particularly in the hightemperature, high pressure, low temperature, low pressure, dust, explosive, toxic and radioactive gases such as poor environment can replace the normal working people. Here I would like to think of designing a machine hand to be used in actual production. Why would a machine hand designed to provide a pneumatic power: pneumatic machine hand refers to the pressed air as power sourcedriven machine hand. With pressuredriven and other energydriven parison have the following advantages: 1. Air inexhaustible, used later discharged into the atmosphere, does not require recycling and disposal, do not pollute the environment. (Concept of environmental protection) 2. Air stick is small, the pipeline pressure loss is small (typically less than asphalt gas path pressure drop of onethousandth), to facilitate longdistance transport. 3. Compressed air of the working pressure is low (usually 4 to 8 kg/per square centimeter), and therefore moving the material ponents and manufacturing accuracy requirements can be lowered. 4. With the hydraulic transmission, pared to its faster action and reaction, which is one of the advantages pneumatic outstanding. 5. The air cleaner media, it will not degenerate, not easy to plug the pipeline. But there are also places where it flies in the ointment: 1. As the pressibility of air, resulting in poor aerodynamic stability of the work, resulting in the implementing agencies as the precision of the velocity and not easily controlled. 2. As the use of low atmospheric pressure, the output power cannot be too large。 exception of a few outside the working procedures are generally fixed, and therefore special. Main features First, mechanical hand (the upper and lower material machine hand, assembly machine hand, handling machine hand, stacking machine hand, help machine hand, vacuum handling machines, vacuum suction crane, laborsaving spreader, pneumatic balancer,etc.) Second, cantilever cranes (cantilever crane, electric chain hoist crane, air balance the hanging, etc.) Third, railtype transport system (hanging rail, light rail, single girder cranes, doublebeam crane) Four, industrial machinery, application of hand Manipulator in the mechanization and automation of the production process developed a new type of device. In recent years, as electronic technology, especially puter extensive use of machine hand development and production of hightech fields has bee a rapidly developed a new technology, which further promoted the development of machine hand, allowing machine hand to better achieved with the bination of mechanization and automation. Although the machine hand is not as flexible as staff, but it has to the continuous duplication of work and labor, I do not know fatigue, not afraid of danger, the power snatch weight characteristics when pared with manual large, therefore, mechanical hand has been applied widely, for example: a) Machining the work piece loading and unloading, especially in the automatic lathe, bination machine too