機械設計專業英語文章
二十一世紀的前十年是工程機械、機電設備行業繁榮發展的十年,這十年的黃金時間也帶動了機械市場的大規模建設。下面小編整理了機械設計專業英語文章，希望大家喜歡!
Machine Tool Technology for NC
數控車牀技術
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.
每種加工過程都可以在設計的專門車牀上來實現加工。在車牀上車削,在鑽牀上鑽,在銑牀上加工。
There are severAl different type of grinding operations with a corresponding variety of machines to perform them.
有幾種類型的磨削方法也要有相應種類的磨牀。
numerical control machine tools have been designed for nearly all of the machining processes. The list includes:
被設計的數控磨牀可以進行下列加工包括:
Drill presses
鑽加工
Milling machines, vertical spindle and horizontal spindle
銑牀立式和臥式主軸
Turning machines, both horizontal axis and vertical axis
車牀臥式主軸和立式主軸
Horizontal and vertical boring mills
臥式和立式鏜牀
Profiling and contouring mills
仿形銑牀
Surface grinders and cylindrical grinders
平面磨和圓柱磨
機械設計專業英語文章鑑賞數控車牀技術(2)
In addition to the machining process, NC machine tools have also been developed for othermetalworking processes. These machines include:
除了上述幾種機械加工方法，數控機牀可用於其他金屬加工過程包括
Punch presses for sheet metal hole punching
用於薄片板的金屬板上衝孔的衝壓機
Presses for sheet metal bending
用於薄片金屬彎曲的折彎機。
The introduction of numerical control has had a pronounced influence on the design andoperation of machine tools.
數控技術的介入到機加工對機牀的設計和運用有着顯著的影響。
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.
數控影響之一在程序控制下切削金屬的時間與傳統手動機牀大得多。
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。
所以對於一些零件如主軸驅動主軸絲槓磨損更快，這些零件要設計成持續時間長的。
Second, the addition of the electronic control unit has increased the cost of the machine,therefore requiring higher equipment utilization.
第二，增加電子控制單元後設備成本也隨之增加，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.
取代傳統手工操作的一班制數控機牀通常採用兩班或三班制來獲得更多的回報。
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.
數控機牀的設計中減少了非操作過程的時間如裝卸工件和換刀時間。
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，增加的勞動成本由人工成本變爲設備成本。
機械設計專業英語文章賞析數控車牀技術(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.
考慮到人工操作的角色,角色由技術熟練的工人控制,工件生產的每一個過程變爲只控制裝卸換刀和清除碎屑和類似的操作,這樣一個工人可以同時操作兩臺或三臺車牀,機牀的角色和功能也改變了
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. 數控需要設計成高度自動化具有需要在不同車牀加工
幾種操作聯合在一起一定加工的能力,這些變化是通過一種新型車牀在數控技術存在之前是不存在的,他豐富了數控加工中心
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 世紀50 年代發展起來的具有在程序控制下在一個工件上一次裝夾完成幾種不同的加工能力的機牀。
The machining center is capable of milling, drilling, reaming, tapping, boring, facing, and similaroperations.
加工中心能完成銑,鑽,鉸屑,攻絲,鏜,車端面及一些類似機加工工作。
