机械设计毕业论文英文翻译

Modern various machine and equipment are more than on the gear reducer, generally USES bearing hole processing, and currently 1ta series boring coordinates are in single points, so in mass production to ensure its hole spacing tolerance, and low fine molding machine is a special machine, when using a series of molding method. Once processed clamping workpiece, hole spacing in design, and when the machine has two of the coaxial when spindle box, while processing by rail, which not only ensures the transmission distance between accuracy, but also guarantee the hole, and greatly improve the coaxial tolerance of machining efficiency. Can realize automation, production line. It meets the modern production accuracy and paper introduced a series of molding machine structure, working principle and control method, and automatic assembly line control principle and realization : a large series boring

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IntroductionMachining aims to generate the shape of work-piece form a solid body,or to improve the tolerances and surface finish of a previously formed work-piece,by removing excess materials in the form of chips. Machining is capable of creating geometric configurations,tolerances, and surface finishes often unobtainable by any other , machining removes materials, which has already been paid for, in the form of relatively small particles that are more difficult to recycle and are in greater danger of becoming mixed. Therefore,developments often aim at reducing or-if at all possible-eliminating machining, especially in mass these reasons, machining has lost some important markets, yet, at the same time, it has also been developing and especially having captured new markets with the application of numerical feel for the important of machining may be gained from the observation that in 1983 there were about 2 million metal-cutting machine tools in the unite states ( of which some 5% were numerically controlled ) and that labor and overhead costs amounted to $125 billion, or 3% of the GNP.

滚珠丝杠传动中最常用的高速加工机床,因为他们的高刚度,它允许精确定位的工具,切削力。带宽的环路是一种重要的因素,而设计的控制器? uences高速定位精度。带宽可扩大了增加反馈收益,直到结构谐振所激动。此外,非线性行为的存储卡螺母和干扰,如外部切削力、非线性摩擦、转矩波动影响运动精度。在这篇文章中,由于结构振动问题,非线性摩擦、转矩波动,和其他外部干扰都在一个系统化的方式。

The design of Block entitled rocker shaft technology and equipment design and CAD / CAM. From Chaoyang Diesel Engine Company is designed to complete the 195-seat rocker shaft diesel engine mold design, Rocker Shaft Tower card processing routes and the development process, some special fixture design modeling software Pro / E into the mold of its design, including: the construction of a module with parts and blank parts of the solid model; on the part of the investment casting mold design, including sub-surface, injection system, pushing pieces of bodies, punch and die, mold base, etc., with engineering drawings and CAXA electronic board module to complete the mold assembly drawings. Order to develop machining technology, including process selection, process development line, the determination of machining allowance, and then calculated according to the technical point of order parameters and the appropriate technology to produce the card. Special milling fixture design, 2 sets of special drilling jig 1 set: the analysis, selection and design, the use of CAXA electronic drawing board to complete its work design of the difficulties is the fixture and die, in the access to a wealth of information and very good teachers under the guidance of the final settlement of these issues, the successful completion of the design.