冲压模具设计---外文资料翻译

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1、毕业设计(论文)外文资料翻译系 部： 专 业： 姓 名： 学 号： 外文出处： The Pofessional English of Design Manufacture for Dies & Moulds 附 件： 1.外文资料翻译译文；2.外文原文。 指导教师评语： 签名： 年 月 日附件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

2、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

3、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

4、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扇形块 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

5、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

6、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

7、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06T钕青铜合金，钕合金04T黄铜，低铅02T镁5T13T钢奥氏体不锈钢0.5T6T低碳钢，低合金钢，高强度铅合金0.5T4T钛0.7T3T钛合金2.6T4T注：T材料厚度。弯曲容许范围，是

8、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（Lb）的近似的公式为：Lb=(R+kT) 式中：Lb弯曲容许范围，毫米； 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R2T时为0.33，当半径R2T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

9、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：P=KLST2/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； WV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

10、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0.55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1015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，

11、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

12、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

13、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620英尺(1.86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

14、、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Stampng Die DesignThe wide variety of shee

15、t 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

16、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 conve

17、y the scale of todays 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, cro

18、pping , 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 deformatio

19、n 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 cupDrawing is observed in the blank flange as it is being drawn horizont

20、ally 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

21、formingStretching 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

22、, 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 r

23、adius, thus suffering a change in orientation. The deformation is an example of plane strain elongation and contractionA 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 pierc

24、ing 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 comp

25、lete 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 gu

26、ide pins are shown in Figure 3. Figure3 Typical single-station die for piercing hole1Lower shoe 2,5Guide bushings 3Cavity plate 4Guid pin 6Spring-loaded stripper 7Punch 8Support plate 9Punch bushing 10Fan-shaped block 11Fixed plate 12Punch-holder plate 13Backing plate 14Spring 15Stepping bolts 16Upp

27、er shoe 17ShankA 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 mate

28、rial, 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

29、 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

30、 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 merel

31、y 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

32、).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 Poissons ratio, the width of the part (bend length, L) in the outer region is smaller, and in the inner region is

33、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 decrease

34、s (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 terminologyFigure5 Poisson effect The minimum bend radius for various materials is given in Table 1 and it is usually ex

35、pressed in terms of the thickness. such as 2 T, 3 T, 4T.Table 1 Minimum bend radius for various materials at room temperatureMaterialConditionSoft HardAluminum alloys06TBeryllium copper04TBrass,low-leaded02TMagnesium 5T13TSteelsAustenitic stanless0.5T6TLow-carbon,lowalloy,HSLA0.5T4TTitanium0.7T3TTit

36、anium alloys2.6T4TNote :Tthickness 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 mech

37、anics of materials).An approximate formula for the bend allowance, Lb is given byLb= (R十kT) Where Lbbend allowance, in (mm). bend angle, (radians) (deg). Tsheet thickness, in (mm). Rinside radius of bend, in (mm). k0.33 when R is less than 2T and 0.50 when JR is more than 2T.Bend methods arc commonl

38、y used in press tool. Metal sheet or strip, supported by-V bockFigure 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 p

39、art 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-loade

40、d pad before the punch contacts the workpiece to prevent its movement during downward travel of the punch.Figure 6 Bending methodsBending 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 materi

41、al. The calculation of bending force is as follows:P=KLST2/W Where P-bending force, tons (for metric usage, multiply number of tons by 8.896 to obtain kilonewtons).Kdie opening factor: 1.20 for a die opening of 16 times metal thickness, 1.33 for an opening of 8 times metal thickness.Llength of part,

42、 in.Sultimate tensile strength, tons per square in.Wwidth of V or U die, in.Tmetal 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

43、 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 0.5to 5, depending upon finite modulus of ela

44、sticity, modes of bending, clearance of die and so on, but phosphor bronze may spring back from 10to15. 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 b

45、ending die are also overbent through an angle equal to the springback angle with an undercut or relieved punch.Figure8 Methods of reducing or eliminating springbackFor the applications, there are many types of the presses, such as the single-action straight-slide eccentric mechanical press, punch pr

46、ess, hydro-former press, hydraulic press, press brake, triple-action press, turret press, two-point press, twin-drive press, two point single-action press, watch press, trimming press, closed-type single-action crank press, knuckle-lever press, one-point single-action press, open-back inclinable pre

47、ss, open-side press, four-point press, four-crank press, flywheel-type screw press, friction screw press, straight-side single-action double-crank press, rocker-arm press, screw press and top-drive sheet-metal stamping automatic press and so on. A double-action press is used for large, or deep drawi

48、ng operations on sheet metal parts. This type of press has an outer ram ( blank holder ) and a section inner ram ( punch holder ) . During the operating cycle, the blank holder contacts the material first and applies pressure to allow the punch holder to properly draw the part (Figure 9).Figure9 Typ

49、ical versatile press A triple-action press has the same inner and outer ram as the double-action press, but a third ram in the press bed moves up allowing a reverse draw to be made in one press cycle. The triple-action press is not widely used.A knuckle press is used for coining operation. The desig

50、n of the drive allows for very high pressures at the bottom of the ram stroke. This type uses a crank, which moves a joint consisting of two levers that oscillate to and from dead center and results in a short, powerful movement of the slide with slow travel near the bottom of the stroke. A hydrauli

51、c press is used basically for forming operations and has a slower operating cycle time than most mechanical presses. The advantages of hydraulic presses are that the working pressure stroke, and speed of the ram are adjustable (Figure 10). Hydraulic presses belong to the force-constrained type of fo

52、rming machines . Their main use is found in those areas of forming technology where the force along the path of the ram must remain constant or under accurate control. The drive mechanism of piston and cylinder acts in a linear manner and is directly connected to the ram. The form of frame construct

53、ion of hydraulic presses is largely similar to that of mechanical presses. The hydraulic drive units are easily accommodated in the machine frame. Consequently, several hydraulic drives can readily be built into a single machine for complicated forming and cutting operations (drawing, extruding, cut

54、ting, swaging, etc.), and the required motions may be easily coordinated. A press brake is essentially same as a gap-frame press except for its long bed from 6 to 20 feet (1.86m) or more. It is used basically for various bending operations on large sheet metal parts. It can also be used with a serie

55、s of separate sets of press tools to do light piercing, notching, and forming (Figure 11). This allows parts of a complex design to be accurately made without a high-cost press tool by simply breaking the complex part down into several simple operations. This type of operation is used on low-run or

56、prototype parts.Figure 10 typical hydraulic press Figure 11 Typical press brake Sheet metal can be bent easily with simple fixtures using a press brake. This press brake utilizes long dies in a mechanical or hydraulic press and is suitable for small production runs. The tooling; is simple, and it is

57、 adaptable to a wide variety of shapes, furthermore, the process can be easily automated. Die materials for press brakes may range from hardwood (for low-strength materials and small production runs) to carbides. For most applications, carbon-steel or gray-iron dies are generally used.1. 基于C8051F单片机

58、直流电动机反馈控制系统的设计与研究2. 基于单片机的嵌入式Web服务器的研究 3. MOTOROLA单片机MC68HC（8）05PV8/A内嵌EEPROM的工艺和制程方法及对良率的影响研究 4. 基于模糊控制的电阻钎焊单片机温度控制系统的研制 5. 基于MCS-51系列单片机的通用控制模块的研究 6. 基于单片机实现的供暖系统最佳启停自校正（STR）调节器7. 单片机控制的二级倒立摆系统的研究8. 基于增强型51系列单片机的TCP/IP协议栈的实现 9. 基于单片机的蓄电池自动监测系统 10. 基于32位嵌入式单片机系统的图像采集与处理技术的研究11. 基于单片机的作物营养诊断专家系统的研究

59、12. 基于单片机的交流伺服电机运动控制系统研究与开发 13. 基于单片机的泵管内壁硬度测试仪的研制 14. 基于单片机的自动找平控制系统研究 15. 基于C8051F040单片机的嵌入式系统开发 16. 基于单片机的液压动力系统状态监测仪开发 17. 模糊Smith智能控制方法的研究及其单片机实现 18. 一种基于单片机的轴快流CO,2激光器的手持控制面板的研制 19. 基于双单片机冲床数控系统的研究 20. 基于CYGNAL单片机的在线间歇式浊度仪的研制 21. 基于单片机的喷油泵试验台控制器的研制 22. 基于单片机的软起动器的研究和设计 23. 基于单片机控制的高速快走丝电火花线切割机

60、床短循环走丝方式研究 24. 基于单片机的机电产品控制系统开发 25. 基于PIC单片机的智能手机充电器 26. 基于单片机的实时内核设计及其应用研究 27. 基于单片机的远程抄表系统的设计与研究 28. 基于单片机的烟气二氧化硫浓度检测仪的研制 29. 基于微型光谱仪的单片机系统 30. 单片机系统软件构件开发的技术研究 31. 基于单片机的液体点滴速度自动检测仪的研制32. 基于单片机系统的多功能温度测量仪的研制 33. 基于PIC单片机的电能采集终端的设计和应用 34. 基于单片机的光纤光栅解调仪的研制 35. 气压式线性摩擦焊机单片机控制系统的研制 36. 基于单片机的数字磁通门传感器

61、 37. 基于单片机的旋转变压器-数字转换器的研究 38. 基于单片机的光纤Bragg光栅解调系统的研究 39. 单片机控制的便携式多功能乳腺治疗仪的研制 40. 基于C8051F020单片机的多生理信号检测仪 41. 基于单片机的电机运动控制系统设计 42. Pico专用单片机核的可测性设计研究 43. 基于MCS-51单片机的热量计 44. 基于双单片机的智能遥测微型气象站 45. MCS-51单片机构建机器人的实践研究 46. 基于单片机的轮轨力检测 47. 基于单片机的GPS定位仪的研究与实现 48. 基于单片机的电液伺服控制系统 49. 用于单片机系统的MMC卡文件系统研制 50.

62、基于单片机的时控和计数系统性能优化的研究 51. 基于单片机和CPLD的粗光栅位移测量系统研究 52. 单片机控制的后备式方波UPS 53. 提升高职学生单片机应用能力的探究 54. 基于单片机控制的自动低频减载装置研究 55. 基于单片机控制的水下焊接电源的研究 56. 基于单片机的多通道数据采集系统 57. 基于uPSD3234单片机的氚表面污染测量仪的研制 58. 基于单片机的红外测油仪的研究 59. 96系列单片机仿真器研究与设计 60. 基于单片机的单晶金刚石刀具刃磨设备的数控改造 61. 基于单片机的温度智能控制系统的设计与实现 62. 基于MSP430单片机的电梯门机控制器的研制

63、 63. 基于单片机的气体测漏仪的研究 64. 基于三菱M16C/6N系列单片机的CAN/USB协议转换器 65. 基于单片机和DSP的变压器油色谱在线监测技术研究 66. 基于单片机的膛壁温度报警系统设计 67. 基于AVR单片机的低压无功补偿控制器的设计 68. 基于单片机船舶电力推进电机监测系统 69. 基于单片机网络的振动信号的采集系统 70. 基于单片机的大容量数据存储技术的应用研究 71. 基于单片机的叠图机研究与教学方法实践 72. 基于单片机嵌入式Web服务器技术的研究及实现 73. 基于AT89S52单片机的通用数据采集系统 74. 基于单片机的多道脉冲幅度分析仪研究 75. 机器人旋转电弧传感角焊缝跟踪单片机控制系统