机械专业英语模块化训练二

模块化训练二：句子英译汉

1.With global competition and the requirements for world-class manufacturing, corporate strategies are continually undergoing major changes. 随着全球竞争和世界级制造业发展的要求，公司策略不断经历重大的改变。

2．In a shaper the cutting tool reciprocates during the cutting motion, which in the case of a planer the work table reciprocates.2.在牛头刨床刨刀的刨削运动中，刨刀作往复运动，但在刨床中工作台作往复运动。

3．Grinding is a process carried out with a grinding wheel made up of abrasive grains for removing very fine quantities of material from the workpiece surface. 磨削工艺过程是靠用磨粒组成的砂轮从工件表面去除非常少量材料来完成的。

4．In static balancing the grinding wheel is rotated on an arbour and the balance weights adjusted until the wheel no longer stops its rotation in any one specific position.．调整砂轮的静平衡是在一个平衡支架上旋转砂轮并调整平衡铁的重量直到砂轮在任何位置都旋转而不停止。

5．However, the accuracy of the gear is dependent upon the accuracy of the dividing head as well as the profile accuracy of the cutter for the given gear.那么，齿轮的精度取决于分度头和给定的齿轮刀具的精度。

6．The size of the boring bar is dictated by the size of the hole to be bored, while its length

depends upon the geometry of the

hole. 镗杆的大小取决于所要镗空

的大小，其长度由空的几何形状决

定。

7．Heat transfer from the spark

to both the tool and the workpiece

makes the latter to melt and

partially vaporize and partially

ionize the metal in a thin surface

layer.电火花的热量传递到工具电

极和工件之间，使后者融化、部分汽

化、部分电离成一薄层细小的金属。

8．Spot facing is similar to

counter boring, but removes only

a very small portion of material

around the existing hole to

provide a flat surface square to

the hole axis.锪端面类似于沉头

镗，它只是在已有的孔周围，沿孔的

轴为轴去除非常少量材料。

9． The traveling-wire method

employs a reel of copper wire that

is slowly fed past the workpiece

and functions much the same as a

band saw except the wire is used

only once. 移动的电极丝是用成卷

铜丝旋转出来的方法，它慢慢通过工

件进给，除了只能使用一次外，功能

极象带锯。

10．The tool head has the ability

to swivel the cutting tool in any

angle while clamping the tool with

any overhang, depending the

requirement.在牛头刨床中在刀头

上，可根据需要以悬挂的方式夹紧的

刨刀，刨刀在刀头上可以任何角度旋

转。

11．The unique feature of all

machine shop operations is that

the parts are precisely formed to

the desired shape and size by

romoving metal from the workpiece

in the forms of chips.所有的车间

加工的唯一特征是以切屑的形式从

工件表面去除金属来精确形成所渴

望的形状和尺寸的工件。

12．The rang of speed and feed

rates to be provided in a given

machine tool dependes upon the

capability of the machine tool and

range of work materials that are

expected to be proceed..一台给定

的机床所能提供的切削速度和进给

速度的范围决定于机床本身的能力

和所希望加工材料的范围。

13．The lathe is one of the most

useful and versatile machine in

the workshop, and is capable of

carrying out a wide variety of

machining operation.在车间车床是

一种最有用和通用的机床之一，能够

完成一个广泛大量的机加工。

14．The means of attaching a

lathe chuck to different machine

tools have been well standardized,

so that chucks made by different

manufacturers can be easily

interchanged.不同车床所附带的卡

盘的式样已经标准化了，所以由不同

厂家制造的卡盘容易互换。

15．Initially, the gap between

the tool and the workpiece, which

consists of the dielectric fluid,

is not conductive.开始时，组成工

件和电极间的电介质是不导电的。

16．The hobbing process though

used for gears and splines more

frequently, is also suitable for

other shapes such as ratchets and

sprockets. 齿轮滚铣刀工艺尽管经常用于加工齿轮和花键，也适合于其它形状像棘齿和链轮齿的加工。

17．In the counter boring operation, the hole is enlarged with a flat bottom to provide a proper seating for the bolt head or a nut, which is flushed from the outer surface.在沉头镗加工中，孔以平底扩大为螺栓或螺母提供合适的位置，并与外表面平齐。

18．The vapor of the metal is quenched by the dielectric medium when the arc is terminated by the electric pulse and thus the wear debris is always spherical in nature.当电脉冲结束电弧后金属汽化被工作液电解质淬火，因此蚀处除的碎屑自然呈小球状。

19．Counter sinking is also similar to counter boring, expect that the additional machining done on a hole is conical to accommodate the counter sunk machine screw head.除了加工孔成锥形配合机制螺丝头的锥形外，锪锥孔类似于沉头镗。

20．Selection of a particular manufacturing process, or a sequence of processes, depends not only on the shape to be produced but also on other factors pertaining to material properi es. 某一制造工艺或一系列工艺的选择不仅取决于要加工的形状，而且取决于与材料有关的因素。

1．正如全文所述，每个制造工艺

有它的优点和局限性，也有各自的生

产率和产品成本。As described

throughout this text, each

manufacturing process has its own

advantages and limitations, as well

as production rates and product

cost.

2．镗削用一个一端带有刀刃的镗刀

的主要问题是镗杆缺乏稳定性。The

major problem of boring with a

boring bar with a single point

turning tool is the lack of rigidity of

the boring bar

3．在制造机器的车间的工作是把

每个零件加工成要求的形状和尺寸。

The work of the machine shop in

building machines is to make each

part to the required shape and size.

4．那么与其它的传统金属切削加

工相比，磨削加工效率较低。Thus the

grinding process is a very inefficient

one compared to the other

conventional metal cutting

processes.

5．夹具是一种将工件夹紧和定位，

并为刀具导向的装置。A jig is a

device that holds and locate a work

piece but also guide the cutting tools.

6．齿轮能够用具有齿轮齿状的成形

铣刀切削（而成）。Gears can be cut

using a form milling cutter, which

has the shape of the gear teeth.

7．在加工中工件的夹紧的重要作

用是会影响到可获得精度。Work

holding in machining is an

important function which affects the

gained accuracy.

8．滚齿是一个不断去除多余材料

回到齿轮形状加工运动的工艺。Gear

hobbing is a continuous process

eliminating the unproductive return

motion of the gear shaping

operation.

9．在卡盘中所有的卡爪可一起移

动自动定心，主要用于圆形工件的夹

持。Chucks in which all the jaws

move together are self centering and

are used primarily for round work.

10．因此以齿轮形状修正的刀具称为

滚刀，其中齿条像蜗杆一样以螺旋结

构在外圆周围包络。It therefore is

modified in the form a gear cutter

called hob, where the rack is wound

round the cylinder in a helix like a

worm.

11．铣削加工可分为两大类：圆周

铣削和端面铣削。Milling operations

can be classified into two broad

categories called peripheral milling

and face milling.

12．信息技术领域的迅速发展能提供

有助于迎接全球重大挑战的工具。

The rapidly growing field of

information technology (IT) can

provide the tools to help meet these

major global challenges.

13．拉力机构的动力和拉削运动通常

是由液压系统提供。The power for

the pulling mechanism and the

movement of the broach is generally

provided by a hydraulic fluid

14．一个典型工艺系统由四部分组

成：机床、刀具、夹具和工件。A

typical processing system consists of

four parts: machine tools, metal

cutting tool, jig and fixture, and

workpiece

15．为获得砂轮的正确的表面可根据

其外形或同心度使用砂轮修正金刚

石工具。To obtain a true surface of the grind wheel in terms of either the form or concentricity a diamond dressing tool can be used.

16．在机床上需要提供的不同种类的运动是切削运动和进给运动。The various motions that need to be provided in the machine tool are cutting speed and feed.

17．垂直轴刀具类似于端面铣刀在齿形上有切削刃。The vertical axis cutters are similar to end mills with the tooth profile on the cutting edge.

18．根据不断的进步和可能性，一些专家已经预见到未来的工厂。In view of these continuing advances and their potential, some experts have envisioned the factory of the future.

19．而且工件安装在立轴上旋转，在切削加工中与成形刀具相啮合。The workpiece is also mounted on a vertical spindle and rotates in mesh with the shaping cutter during the cutting operation.

20．毫无疑问，更多的平面是通过铣削生产的而不是通过任何其它的加工工艺。

Unquestionably, more flat surfaces are produced by milling than by any other machining process.