机械设计专业英语文章
二十一世纪的前十年是工程机械、机电设备行业繁荣发展的十年,这十年的黄金时间也带动了机械市场的大规模建设。下面小编整理了机械设计专业英语文章，希望大家喜欢!
Machine Tool Technology for NC
数控车床技术
Each of the five machining processes is carried out on a machine tool designed to perform that process. Turning is performed on a lathe, drilling is done on a drill press, milling on a milling machining, and so on.
每种加工过程都可以在设计的专门车床上来实现加工。在车床上车削,在钻床上钻,在铣床上加工。
There are severAl different type of grinding operations with a corresponding variety of machines to perform them.
有几种类型的磨削方法也要有相应种类的磨床。
numerical control machine tools have been designed for nearly all of the machining processes. The list includes:
被设计的数控磨床可以进行下列加工包括:
Drill presses
钻加工
Milling machines, vertical spindle and horizontal spindle
铣床立式和卧式主轴
Turning machines, both horizontal axis and vertical axis
车床卧式主轴和立式主轴
Horizontal and vertical boring mills
卧式和立式镗床
Profiling and contouring mills
仿形铣床
Surface grinders and cylindrical grinders
平面磨和圆柱磨
机械设计专业英语文章鉴赏数控车床技术(2)
In addition to the machining process, NC machine tools have also been developed for othermetalworking processes. These machines include:
除了上述几种机械加工方法，数控机床可用于其他金属加工过程包括
Punch presses for sheet metal hole punching
用于薄片板的金属板上冲孔的冲压机
Presses for sheet metal bending
用于薄片金属弯曲的折弯机。
The introduction of numerical control has had a pronounced influence on the design andoperation of machine tools.
数控技术的介入到机加工对机床的设计和运用有着显著的影响。
One of the effects of NC has been that the proportion of time spent by the machine cuttingmetal under program control is significantly greater than with manually operated machines.
数控影响之一在程序控制下切削金属的时间与传统手动机床大得多。
This causes certain components, such as the spindle, drive gears, and feed screws, to wearmore rapidly. These components must be designed to last longer on NC machines。
所以对于一些零件如主轴驱动主轴丝杠磨损更快，这些零件要设计成持续时间长的。
Second, the addition of the electronic control unit has increased the cost of the machine,therefore requiring higher equipment utilization.
第二，增加电子控制单元后设备成本也随之增加，因此需要更高的利用率。
Instead of running the machine on only one shift, which was the convention with manuallyoperated machines, NC machines are often operated two or even three shifts to obtain therequired payback.
取代传统手工操作的一班制数控机床通常采用两班或三班制来获得更多的回报。
Also, the NC machines are designed to reduce the time consumed by the non-processingelements in the operation cycle, such as loading and unloading the workpart, and changingtools.
数控机床的设计中减少了非操作过程的时间如装卸工件和换刀时间。
Third, the increasing cost of labor has altered the relative roles of the operator and themachine tool. Consider the role of the human operator.
第三，增加的劳动成本由人工成本变为设备成本。
机械设计专业英语文章赏析数控车床技术(3)
Instead of being the highly skilled worker who controlled every aspect of the part production,the tasks of the operator have been reduced to part loading and unloading, tool changing, chipclearing, and the like. In this way, one operator can often run two or three automatic role and functions of the machine tool have also changed.
考虑到人工操作的角色,角色由技术熟练的工人控制,工件生产的每一个过程变为只控制装卸换刀和清除碎屑和类似的操作,这样一个工人可以同时操作两台或三台车床,机床的角色和功能也改变了
NC machines are designed to be highly automatic and capable of combining several operationsin one setup that formerly required several different machines. These changes are bestexemplified by a new type of machine that did not exist prior to the advent and development ofnumerical control: the machining center. 数控需要设计成高度自动化具有需要在不同车床加工
几种操作联合在一起一定加工的能力,这些变化是通过一种新型车床在数控技术存在之前是不存在的,他丰富了数控加工中心
The machining center, developed in the late 1950s, is a machine tool capable of performingseveral different machining operations on a workpart in one setup under program control.
加工中心是在20 世纪50 年代发展起来的具有在程序控制下在一个工件上一次裝夹完成几种不同的加工能力的机床。
The machining center is capable of milling, drilling, reaming, tapping, boring, facing, and similaroperations.
加工中心能完成铣,钻,铰屑,攻丝,镗,车端面及一些类似机加工工作。
