冲压模具设计毕业外文翻译 中英文翻译 外文文献翻译
冲压模具设计毕业外文翻译中英文翻译外文文献翻译毕业设计(论文)外文资料翻译
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外文出处: The Pofessional English of Design
Manufacture for Dies & Moulds
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附件1:外文资料翻译译文
冲压模具设计
对于汽车行业与电子行业，各种各样的板料零件都是有各种不同的成型工艺所生产出来的，这些均可以列入一般种类“板料成形”的范畴。板料成形(也称为冲压或压力成形)经常在厂区面积非常大的公司中进行。
如果自己没有去这些大公司访问，没有站在巨大的机器旁，没有感受到地面的震颤，没有看巨大型的机器人的手臂吧零件从一个机器移动到另一个机器，那么厂区的范围与价值真是难以想象的。当然，一盘录像带或一部电视专题片不能反映出汽车冲压流水线的宏大规模。站在这样的流水线旁观看的另一个因素是观看大量的汽车板类零件被进行不同类型的板料成形加工。落料是简单的剪切完成的，然后进
行不同类型的加工，诸如:弯曲、拉深、拉延、切断、剪切等，每一种情况均要求特殊的、专门的模具。
而且还有大量后续的加工工艺，在每一种情况下，均可以通过诸如拉深、拉延与弯曲等工艺不同的成形方法得到所希望的得到的形状。根据板料平面的各种各样的受应力状态的小板单元体所可以考虑到的变形情形描述三种成形，原理图1描述的是一个简单的从圆坯料拉深成一个圆柱水杯的成形过程。
图1 板料成形一个简单的水杯
拉深是从凸缘型坯料考虑的，即通过模具上冲头的向下作用使材料被水平拉深。一个凸缘板料上的单元体在半径方向上被限定，而板厚保持几乎不变。板料成形的原理如图2所示。
拉延通常是用来描述在板料平面上的两个互相垂直的方向被拉长的板料的单元体的变形原理的术语。拉延的一种特殊形式，可以在大多数成形加工中遇到，即平面张力拉延。在这种情况下，一个板料的单元体仅在一个方向上进行拉延，在拉长的方向上宽度没有发生变化，但是在厚度上有明确的变化，即变薄。
图2 板料成形原理
弯曲时当板料经过冲模，即冲头半径加工成形时所观察到的变形原理，因此在定向的方向上受到改变，这种变形式一个平面张力拉长与收缩的典型实例。
在一个压力机冲程中用于在一块板料上冲出一个或多个孔的一个完整的冲压模具可以归类即制造商标准化为一个单工序冲孔模具，如图3所示。
图3 典型的单工序冲孔模具
1—下模座 2、5—导套 3—凹模 4—导杆6—弹压卸料板 7—凸模 8—托板9—凸模护套 10—
11—固定板 12—凸模固定板 13—垫块 15—阶梯螺钉 16—上模座 17—模柄扇形块
任何一个完整的冲压模具都是有一副(或多副的组合)用于冲制工作的(冲压)零件组成，包括:所有的支撑件部分与模具的工作部分零件，即构成一副冲模。冲压(术语)通常将完整压制工具的凹模(母模)部分定义为模具。
导杆，或导柱，是安装在下模座上的。上模座则安装有用于导杆滑动的导套，分别装有导套与导杆的上模座与下模座组合成为木架。模架有许多规格与结构设计用于商业销售。
安装在上模座上的凸模固定装置固定两个凸模(模具中的突出部分)，这两个圆形凸模则通过插入在卸料板上的导套进行导向。套筒，或凸模护套，是用来保护冲头，以免在冲压过程中被卡住。在冲穿工件材料后，两个冲头便进入到凹模一定距离。
凹模(母模)部分，即凹模，通常是由插入模具体内的两个模具导套组成的。因为冲头的直径是被冲孔的直径所要求的，所以有一定间隙的凹模直径是大于冲头直径的。
由于工件材料坯料或工件在冲制回程时与冲头附连在一起，所以把材料从冲头上剥离是必需的。弹压卸料板则保持冲头在冲制工件回程时缩回，使工件与工件剥离。一个冲制的工件通常是留在漏料槽内的，漏料槽是由包含整个零件外轮廓的平板组成。模座是由销钉支撑板以及其他的滑块下行程时定位的挡料块等定位的。
弯曲时一种最常见的成形工序。当我们仅将目光移至汽车或电器上的部件，或一个剪纸机或档案柜上时，就会发现许多零件都是由弯曲成形的。弯曲不仅可以用来成形法兰、接头、波纹，也可以提高零件的强度(通过增加零件的惯性矩)。
图4 弯曲术语
弯曲中所用的术语，如图4所示，应该注意的是，在弯曲中材料的外纤维是处于拉应力状态，而材料的内纤维则处于压应力状态。由于泊松比原因，在外部区域的零件(弯曲长度L)是小于原始宽度，处于内部区域的则比原始宽度大。这种现象可在弯曲一个矩形的橡胶板擦时容易观察到的。
最小弯曲半径对于不同的金属是变化的。一般而言，各种退火的金属板在没有断裂或变弱的前提下，可以弯曲成一个等同金属板厚的半径。随着R/T比值的减少(弯曲半径对厚度的比值变小)，外纤维的拉应力增加，材料最终断裂(参见图5)。
图5 泊松效应
不同材料的最小弯曲半径参考表1，他通常是按照不同板厚来表示的，诸如: 2T，3T，4T等。
表1 在室温状态下各种材料的最小弯曲半径
材料状态
软硬
铝合金 0 6T
钕青铜合金，钕合金 0 4T
黄铜，低铅 0 2T
镁 5T 13T
钢
奥氏体不锈钢 0.5T 6T
低碳钢，低合金钢，高强度铅合金 0.5T 4T
钛 0.7T 3T
钛合金 2.6T 4T
注:T——材料厚度。
弯曲容许范围，是指弯曲中的中性线(层)的长度，用来确定弯曲零件的坯料长度。然而，中性线(层)的位置是哟弯曲角度(正如在材料力学课本中所描述)来决定的。弯曲容许范围(L)的近似的公式为: b
L=α(R+kT) b
式中:L——弯曲容许范围，毫米; b
α——弯曲角度(弧度)，度;
T——金属板厚，毫米;
R——弯曲内层半径，毫米;
k ——当半径R,2T时为0.33，当半径R,2T时为0.50。
弯曲方式通常用于冲压模具。金属钢板或带料，由V形支撑，参见图6(a)在楔形冲头的冲压力作用下进入V形模具内弹簧加载压花销和零件之间的摩擦将会防止或减少零件在弯曲期间的边缘滑移。
棱边弯曲，参见图6(b)是悬臂横梁式加载方式，弯曲冲头对相对支撑的凹模上的金属施加弯曲力。弯曲轴线是与弯曲模具的棱边相平行的。在冲头接触工件之前，为了防止冲头向下行程的位移，工件则被一个弹性加载垫片加紧模具体上。
图6 弯曲方式
弯曲力的大小是可以通过对一根矩形横梁的简单弯曲的工艺过程的确定来估算。在此情况下的弯曲力是材料强度的函数，此弯曲力的计算式为: 2P=KLST/W
式中:P——弯曲力，吨(对于米制使用单位，吨乘以8.896数值以得到千牛顿单位);
K——模具开启系数:16倍材料厚度(16T)时的开启系数为1.20，8倍材料厚度(8T)时的开启系数为1.33;
L——零件长度，英寸;
S——极限张力强度，吨/平方英寸;
W——V或U形模具的宽度，英寸;
T——材料厚度，英寸。
对于U形弯曲(槽形弯曲)，弯曲力大约是V形弯曲所需要的弯曲压力的两倍，棱边弯曲则大约是V形弯曲所需要的弯曲压力的1/2。
回弹。所有金属材料均有一个固定的弹性模量，随之而来的是塑性变形，当施加在材料上的弯曲力消除时就会有一些弹性恢复(见图7)。在弯曲过程中这种恢复
称为回弹。一般而言，这样的回弹在0.5?,5?之间变化，取决于固定的弹性模量、弯曲方式、模具间隙等。磷青铜的回弹则在10?,15?之间。
图7 弯曲中的回弹
减少或消除在弯曲工序中回弹方法可以根据下列工艺方法进行，如图8所示，在弯曲模具中产生的零件也可以通过等同回弹角度弯曲模上挖凹模或弹性缓冲式弯曲模而被过度弯曲来减少或消除回弹。
图8 减少或消除回弹的方法
从应用角度来说，有许多类型的压力机，诸如:闭式双点偏心轴单动机械压力机，冲压成形机，液压成形压力机，液压机，弯板机，三动式压力机，冲模回转压力机，双点压力机，双边齿轮驱动压力机，双点单动压力机，台式压力机，切边压力机，闭式单动(曲柄)压力机，肘杆式压力机，单点单动压力机，开式双柱可倾压力机，开式压力机，四点式压力机，四曲柄压力机，飞轮式螺旋压力机，摩擦传动
螺旋压力机，闭式双点单动双曲柄压力机，摇臂式压力机螺旋式压力机和上传动板料冲压自动压力机等。
双动式压力机是用于钣金零件的拉深加工。此种类型的压力机有一个外滑块(压边圈)，并且有一个切断的内滑块(冲头夹紧器)。在加工工作循环期间，压边圈首先与零件接触，然后施加压力使冲头夹紧器进行适当零件拉深(见图9)。
图9 典型通用压力机
三动式压力机具有和双动式压力机相同的内、外滑块。另外，三动式压力机床身还有另一个滑块，它可向上运动，从而在一个冲压循环中实现反向拉伸。三动式压力机应用不是很广泛。
肘杆式压力机是用于压印加工。这装置的设计是在冲压行程的末端以很高压力。此种压力机利用一个曲柄(曲柄带动违节运动，连节是由两个在上死点到下死点之间进行摆动的连杆组成，连杆摆动时间很短)(在临近冲程底部时慢速移动的滑
块具有功率很大的短距离位移。液压机主要是用于成形加工工序中，相比大多散机械式压力机，它有一个比较长的工作周期。液压机的优点足工作压力、冲程和滑块的速度均是可调的(见图10)。
图10 典型液压机
液压机属于压力限定型的成形机械，液压机的主要用途体现在沿滑块路径外力是必须保持恒定或处于精确摊制锋成形技术领域中。活塞与液压缸的驱动机构是用线性方式实现的，并且直接(连接到滑块。液压机框架结构的形式是非常类似于机械式力机。液压驱动装置易于安装在机械框架结构中。因此几种液压机驱动很容易就被制成复杂成形与切断加工(拉深、挤压、切断、模锻等)的单一机械，并且所要求的运动可以容易地定位，弯扳机除了它的长床身之外基本是与开式压力机棚同的，床身长度可为6,20英尺(1.8,6米)或更长，它基本上是用在尺寸大的钣金零件上的各种类型的弯曲加工成形，它也可以使用不同整套的刀具分别进行浅冲孔、切口与成形(见图11)。这就可以使零件仅通过把复杂的零件分成几个简单的加工工序实现由复杂设计到精确制造的过程，且没有使用昂贵的冲制刀具。此种类型加工工序用于小批量生产或试样零件。
图11 典型弯板机
使用带有简单央具的弯扳机可以容易地对钣金进行弯曲。弯板机使用一个用在机械或液压饥上的长模具，适用于小批量生产。模具简单，适于各种类型的成形加工，而且，加工工序很容易实现自动化。弯板机的模具材料可以是硬木(用于低强度材料与小批量生产)，也可以是硬质合金材料。大多数应用中，一般是使用碳钢或灰铸铁材料模具。
附件2:外文原文
Stamping Die Design
The wide variety of sheet metal parts for both the automobile and electronic industries is produced by numerous forming processes that
fall into the generic category of "sheet-metal forming". Sheet-metal forming ( also called stamping or pressing )is often carried out in large facilities hundreds of yards long.
It is hard to imagine the scope and cost of these facilities without visiting an automobile factory, standing next to the gigantic machines, feeling the floor vibrate, and watching heavy duty robotic manipulators move the parts from one machine to another. Certainly, a videotape or
television special cannot convey the scale of today's automobile stamping lines. Another factor that one sees standing next to such lines is the number of different sheet-forming operations that automobile panels go through. Blanks are created by simple shearing, but from then on a wide variety of bending, drawing, stretching, cropping , and trimming takes place, each requiring a special, custom-made die.
Despite this wide variety of sub-processes, in each case the desired shapes are achieved by the modes of deformation known as drawing, stretching, and bending. The three modes can be illustrated by considering the deformation of small sheet elements subjected to various states of stress in the plane of the sheet. Figure 1 considers a simple forming process in which a cylindrical cup is produced from a circular blank.
Figure 1 Sheet forming a simple cup
Drawing is observed in the blank flange as it is being drawn horizontally through the die by the downward action of the punch. A sheet element in the flange is made to elongate in the radial direction
and contract in the circumferential direction, the sheet thickness remaining approximately constant Modes of sheet forming are shown in Figure 2.
Figure2 Modes of sheet forming
Stretching is the term usually used to describe the deformation in which an element of sheet material is made to elongate in two perpendicular directions in the sheet plane. A special form of stretching, which is encountered in most forming operations, is plane strain stretching. In this case, a sheet element is made to stretch in one direction only, with no change in dimension in the direction normal to the direction of elongation but a definite change in thickness, that is, thinning.
Bending is the mode of deformation observed when the sheet material is made to go over a die or punch radius, thus suffering a change in
orientation. The deformation is an example of plane strain elongation
and contraction
A complete press tool for cutting a hole or multi-holes in sheet material at one stroke of the press as classified and standardized by a large manufacturer as a single-station piercing die is shown in Figure3.
Any complete press tool, consisting of a pair( or a combination of pars ) of mating member for producing pressworked (stmped)parts,
including all supporting and actuating
elements of the tool, is a die. Pressworking terminology commonly defines the female part of any complete press tool as a die.
The guide pins, or posts, are mounted in the lower shoe. The upper shoe contains bushings which slide on the guide pins. The assembly of
the lower and upper shoes with guide pins and bushings is a die set. Die sets in many sizes and designs are commercially available. The guide
pins are shown in Figure 3.
Figure3 Typical single-station die for piercing hole
1—Lower shoe 2,5—Guide bushings 3—Cavity plate 4—Guid pin 6—Spring-loaded
stripper 7—Punch 8—Support plate 9—Punch bushing 10—Fan-shaped block 11—Fixed
plate 12—Punch-holder plate 13—Backing plate 14—Spring 15—Stepping bolts
16—Upper shoe 17—Shank
A punch holder mounted to the upper shoe holds two round punches (male members of the die) which are guided by bushings inserted in the stripper. A sleeve, or quill, encloses one punch to prevent its buckling under pressure from the ram of the press.
After penetration of the work material, the two punches enter the
die bushings for a slight distance.
The female member, or die, consists of two die bushings inserted in the die block. Since this press tool punches holes to the diameters required, the diameters of the die bushings are larger than those of the punches by the amount of clearance.
Since the work material stock or workpiece can cling to a punch on the upstroke, it may be necessary to strip the material from the punch. Spring-loaded strippers hold the work material against the die block until the punches are withdrawn from the punched holes. A workpiece to be pierced is commonly held and located in a nest (Figure 2-3) composed of flat plates shaped to encircle the outside part contours. Stock is
positioned in dies by pins, blocks, or other types of stops for locating before the downstroke of the ram.
Bending is one of the most common forming operations. We merely have to look at the components in an automobile or an appliance-or at a paper clip or a file cabinet-to appreciate how many parts are shaped by bending. Bending is used not only to form flanges, seams, and corrugations but also to impart stiffness to the part ( by increasing
its moment of inertia ).
The terminology used in bending is shown in Figure 4. Note that, in bending, the outer fibers of the material are in tension, while the inner fibers are in compression. Because of the Poisson's ratio, the width of the part (bend length, L) in the outer region is smaller, and
in the inner region is larger than the original width. This phenomenon may easily be observed by bending a rectangular rubber eraser.
Minimum bend radii vary for different metals, generally, different annealed metals can be bent to a radius equal to the thickness of the metal without cracking or weakening. As R/T decreases (the ratio of the bend radius to the thickness becomes smaller), the tensile strain at the outer fiber increases, and the material eventually cracks (Figure 5).
Figure 4 Bending terminology
Figure5 Poisson effect
The minimum bend radius for various materials is given in Table 1 and it is usually
expressed in terms of the thickness. such as 2 T, 3 T, 4T. Table 1 Minimum bend radius for various materials at room temperature Material Condition
Soft Hard
Aluminum alloys 0 6T
Beryllium copper 0 4T
Brass,low-leaded 0 2T
Magnesium 5T 13T
Steels
Austenitic stanless 0.5T 6T
Low-carbon,lowalloy,HSLA 0.5T 4T
Titanium 0.7T 3T
Titanium alloys 2.6T 4T
Note :T——thickness of material
Bend allowance as shown in Figure 4 is the length of the neutral axis in the bend and is used to determine the blank length for a bent
part. However, the position of the neutral axis depends on the radius and angle of bend (as described in texts on mechanics of materials).An approximate formula for the bend allowance, Lb is given by L= α(R十kT) b
Where L——bend allowance, in (mm). b
α——bend angle, (radians) (deg).
T——sheet thickness, in (mm).
R——inside radius of bend, in (mm).
k——0.33 when R is less than 2T and 0.50 when JR is more than 2T.
Bend methods arc commonly used in press tool. Metal sheet or strip, supported by-V bock[Figure 6(a)],is forced by a wedge-shaped punch into the block. This method, termed V bending, produces a bend having an included angle which may be acute, obtuse, or 90?.Friction between a spring-loaded knurled pin in the vee die and the part will prevent or reduce side creep of the part during its bending.
Edge bending [Figure 6(b)] is cantilever loading of a beam. The bending punch forces the metal against the supporting die. The bend axis is parallel to the edge of the die. The workpiece is clamped to the die block by a spring-loaded pad before the punch contacts the workpiece to prevent its movement during downward travel of the punch.
Figure 6 Bending methods
Bending Force can be estimated by assuming the process of simple bending of a rectangular beam. The bending force in that case is a function of the strength of the material. The calculation of bending force is as follows:
2P=KLST/W
Where P-bending force, tons (for metric usage, multiply number of tons by 8.896 to obtain kilonewtons).
K——die opening factor: 1.20 for a die opening of 16 times metal thickness, 1.33 for an opening of 8 times metal thickness.
L——length of part, in.
S——ultimate tensile strength, tons per square in.
W——width of V or U die, in.
T——metal thickness, in.
For U bending (channel bending) pressures will be approximately
twice those required for V bending, edge bending requires about one-half those needed for V bending.
Springback in that all materials have a finite modulus of elasticity, plastic deformation is followed, when bending pressure on metal is removed, by some elastic recovery (see Figure 7). In bending, this recovery is called springback. Generally speaking, such a springback varies in sheet from 0.5?to 5?, depending upon finite modulus of elasticity, modes of bending, clearance of die and so on, but phosphor bronze may spring back from 10?to15?.
Figure 7 Springback during bending
Methods of reducing or eliminating springback in bending operations can be made according to the following operations, shown in Figure 8,
and parts produced in bending die are also overbent through an angle equal to the springback angle with an undercut or relieved punch.
Figure8 Methods of reducing or eliminating springback
工业设计专业英语英文翻译
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工业设计外文翻译
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(完整版)冲压类外文翻译、中英文翻译冲压模具设计
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拉深是从凸缘型坯料考虑的，即通过模具上冲头的向下作用使材料被水平拉深。一个凸缘板料上的单元体在半径方向上被限定，而板厚保持几乎不变。板料成形的原理如图2所示。 拉延通常是用来描述在板料平面上的两个互相垂直的方向被拉长的板料的单元体的变形原理的术语。拉延的一种特殊形式，可以在大多数成形加工中遇到，即平面张力拉延。在这种情况下，一个板料的单元体仅在一个方向上进行拉延，在拉长的方向上宽度没有发生变化，但是在厚度上有明确的变化，即变薄。 图2 板料成形原理 弯曲时当板料经过冲模，即冲头半径加工成形时所观察到的变形原理，因此在定向的方向上受到改变，这种变形式一个平面张力拉长与收缩的典型实例。 在一个压力机冲程中用于在一块板料上冲出一个或多个孔的一个完整的冲压模具可以归类即制造商标准化为一个单工序冲孔模具，如图3所示。
模具毕业设计外文翻译(英文+译文)
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DESIGN and ENVIRONMENT Product design is the principal part and kernel of industrial design. Product design gives uses pleasure. A good design can bring hope and create new lifestyle to human. In spscificity,products are only outcomes of factory such as mechanical and electrical products,costume and so on.In generality,anything,whatever it is tangibile or intangible,that can be provided for a market,can be weighed with value by customers, and can satisfy a need or desire,can be entiled as products. Innovative design has come into human life. It makes product looking brand-new and brings new aesthetic feeling and attraction that are different from traditional products. Enterprose tend to renovate idea of product design because of change of consumer's lifestyle , emphasis on individuation and self-expression,market competition and requirement of individuation of product. Product design includes factors of society ,economy, techology and leterae humaniores. Tasks of product design includes styling, color, face processing and selection of material and optimization of human-machine interface. Design is a kind of thinking of lifestyle.Product and design conception can guide human lifestyle . In reverse , lifestyle also manipulates orientation and development of product from thinking layer.
土木工程外文文献及翻译
本科毕业设计 外文文献及译文 文献、资料题目：Designing Against Fire Of Building 文献、资料来源：国道数据库 文献、资料发表（出版）日期：2008.3.25 院（部）：土木工程学院 专业：土木工程 班级：土木辅修091 姓名：武建伟 学号：2008121008 指导教师：周学军、李相云 翻译日期： 20012.6.1
外文文献: Designing Against Fire Of Buliding John Lynch ABSTRACT: This paper considers the design of buildings for fire safety. It is found that fire and the associ- ated effects on buildings is significantly different to other forms of loading such as gravity live loads, wind and earthquakes and their respective effects on the building structure. Fire events are derived from the human activities within buildings or from the malfunction of mechanical and electrical equipment provided within buildings to achieve a serviceable environment. It is therefore possible to directly influence the rate of fire starts within buildings by changing human behaviour, improved maintenance and improved design of mechanical and electrical systems. Furthermore, should a fire develops, it is possible to directly influence the resulting fire severity by the incorporation of fire safety systems such as sprinklers and to provide measures within the building to enable safer egress from the building. The ability to influence the rate of fire starts and the resulting fire severity is unique to the consideration of fire within buildings since other loads such as wind and earthquakes are directly a function of nature. The possible approaches for designing a building for fire safety are presented using an example of a multi-storey building constructed over a railway line. The design of both the transfer structure supporting the building over the railway and the levels above the transfer structure are considered in the context of current regulatory requirements. The principles and assumptions associ- ated with various approaches are discussed. 1 INTRODUCTION Other papers presented in this series consider the design of buildings for gravity loads, wind and earthquakes.The design of buildings against such load effects is to a large extent covered by engineering based standards referenced by the building regulations. This is not the case, to nearly the same extent, in the
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前言 在目前激烈的市场竞争中，产品投入市场的迟早往往是成败的关键。模具是高质量、高效率的产品生产工具，模具开发周期占整个产品开发周期的主要部分。因此客户对模具开发周期要求越来越短，不少客户把模具的交货期放在第一位置，然后才是质量和价格。因此，如何在保证质量、控制成本的前提下加工模具是值得认真考虑的问题。模具加工工艺是一项先进的制造工艺，已成为重要发展方向，在航空航天、汽车、机械等各行业得到越来越广泛的应用。模具加工技术，可以提高制造业的综合效益和竞争力。研究和建立模具工艺数据库，为生产企业提供迫切需要的高速切削加工数据，对推广高速切削加工技术具有非常重要的意义。本文的主要目标就是构建一个冲压模具工艺过程，将模具制造企业在实际生产中结合刀具、工件、机床与企业自身的实际情况积累得高速切削加工实例、工艺参数和经验等数据有选择地存储到高速切削数据库中，不但可以节省大量的人力、物力、财力，而且可以指导高速加工生产实践，达到提高加工效率，降低刀具费用，获得更高的经济效益。 1.冲压的概念、特点及应用 冲压是利用安装在冲压设备（主要是压力机）上的模具对材料施加压力，使其产生分离或塑性变形，从而获得所需零件（俗称冲压或冲压件）的一种压力加工方法。冲压通常是在常温下对材料进行冷变形加工，且主要采用板料来加工成所需零件，所以也叫冷冲压或板料冲压。冲压是材料压力加工或塑性加工的主要方法之一，隶属于材料成型工程术。 冲压所使用的模具称为冲压模具，简称冲模。冲模是将材料（金属或非金属）批量加工成所需冲件的专用工具。冲模在冲压中至关重要，没有符合要求的冲模，批量冲压生产就难以进行；没有先进的冲模，先进的冲压工艺就无法实现。冲压工艺与模具、冲压设备和冲压材料构成冲压加工的三要素，只有它们相互结合才能得出冲压件。 与机械加工及塑性加工的其它方法相比，冲压加工无论在技术方面还是经济方面都具有许多独特的优点，主要表现如下； (1) 冲压加工的生产效率高，且操作方便，易于实现机械化与自动化。这是
模具设计与制造外文翻译
The mold designing and manufacturing The mold is the manufacturing industry important craft foundation, in our country, the mold manufacture belongs to the special purpose equipment manufacturing industry. China although very already starts to make the mold and the use mold, but long-term has not formed the industry. Straight stabs 0 centuries 80's later periods, the Chinese mold industry only then drives into the development speedway. Recent years, not only the state-owned mold enterprise had the very big development, the three investments enterprise, the villages and towns (individual) the mold enterprise's development also rapid quietly. Although the Chinese mold industrial development rapid, but compares with the demand, obviously falls short of demand, its main gap concentrates precisely to, large-scale, is complex, the long life mold domain. As a result of in aspect and so on mold precision, life, manufacture cycle and productivity, China and the international average horizontal and the developed country still had a bigger disparity, therefore, needed massively to import the mold every year . The Chinese mold industry must continue to sharpen the productivity, from now on will have emphatically to the profession internal structure adjustment and the state-of-art enhancement. The structure adjustment aspect, mainly is the enterprise structure to the specialized adjustment, the product structure to center the upscale mold development, to the import and export structure improvement, center the upscale automobile cover mold forming analysis and the structure improvement, the multi-purpose compound mold and the compound processing and the laser technology in the mold design manufacture application, the high-speed cutting, the super finishing and polished the technology, the information direction develops . The recent years, the mold profession structure adjustment and the organizational reform step enlarges, mainly displayed in, large-scale, precise, was complex, the long life, center the upscale mold and the mold standard letter development speed is higher than the common mold product; The plastic mold and the compression casting mold proportion increases; Specialized mold factory quantity and its productivity increase;