外文翻译=矩形绕线机的张力控制

1、中国地质大学长城学院本科毕业设计外文资料翻译系别：工程技术系专 业： 机械设计制造及其自动化姓名：王晶轩学 号： 052083212011 年 12 月 28 日外文资料翻译译文矩形绕线机的张力控制摘要本文介绍的是设计张力控制系统的测试， 尽量减小张力的变化，其中包括流体动力占 用肌肉手臂，流体蓄电池肌肉。首先，确定该模型和现有张紧系统。之后，在模拟上进行 理论的分析。仿真结果表明，电线由于速度的变化产生的长度变化的导致循环紧张波动。 该模型的张力传感器验证了预测。成功设计的关键是消除张力的变化。我们建议增加一项 线平机，其中包括一个蓄电池和拉紧装置， 取代传统的气缸与流体供电肌肉累加器。 仿

2、真 结果表明，新的原型系统几乎增加了一倍的绕线速度和承受的张力波动的能力。关键词：张力控制： 绕线机： 矩形线圈。一. 引言每年在澳大利亚要制造数以千计的变压器， 连同电厂、变电站和电力线路，配电变压 器为全国的商业及住宅提供电能。变压器制造涉及绕组线圈生产。这些线圈通常由一对铜 线在匝数之间夹上的绝缘纸层制成。它们通常是圆形或长方形。在线圈绕组上必须保持一致的张力。线圈的形状对所采用的由拉紧产生的张力产生重 大影响。对于一个圆形线圈的张力不会变化显着， 但矩形线圈则不同。作为一个矩形线圈， 在送丝线圈上加快速度，减速的线圈会缠绕在机轴上。如图1所示，这个速度的变化是由 不断变化的线的长度导致

3、。在圆线圈的情况下这不会有问题，因为在线圈上导线的接触点 是固定的。濮转简管图1:速度的变化导致绕组上线长度变化在机器上的导线和不同的主轴负荷紧张的结果各不相同， 导致过度的力的变化和机械振动。这反过来可能会导致变化中的线圈电线交叉。当这些问题出现，纠正起来时很费时间的。此外，工厂的产能线圈，在工厂的生产能力线圈是在工厂的总体能力的制约因素， 因此任何对线圈的输出中断都会影响到全厂。当今市场上普通线材的张紧设置，是运行在约5米/秒到30米/秒之间。我们通常的绕线速度超过10米/秒，公司的目标是0.45毫米 至4毫米的线达到至少20米/秒的速度。本文进一步考察了张力的波动问题，并且在高速的绕线矩

4、形线圈取得一致的张力关系。在下面的部分问题的作了说明，为现有的可用技术做了综述。二. 背景如图2所示，现有的卷绕系统使用感受到张紧垫，阀芯的电线被安装到其住房垂直并 且该线是通过导丝、导轮，然后到绕线机。张力的控制室通过的固定或松开钳子来实现。图2:现有电线的安装和张力的设置毛毡垫是最简单，最常用的线张力控制的方法之一。图2照片显示主要组成部分和工作原理。上面的配置使用克钳套用挤压力量的感觉 垫。该线是穿过感觉垫，因此应用的感觉垫一些力也适用于电线。在操作中，运动线路迟 缓或张力的创建，对牙釉质的感觉垫丝摩擦表面的摩擦。 机器操作线程的电线通过指导和 滑轮和调整锁模力手动和直观地表现出来。其优

5、点是：简单，随时可用，便宜，适应任何 运行速度。缺点也是显而易见的。 垫磨损很快，导致紧张局势的损失，该作用力仅和一般 的速度无关，必须加强和更换频繁，直观的张力设置不允许良好的控制和没有线轴形状补 偿。三. 模型识别导线从线轴穿过的张力装置，通过机器，并上矩形线圈。该系统简化，如图1所示的 只是一个固定的馈送点，那里的张力被应用，旋转矩形代表筒子或线圈。理想的运行速度为1000转。给出了一个线速10- 30米/秒取决于在一特定时刻线圈 的大小。图3显示了由筒子长方形生产线速度的变化。线谨度变化aSO 130*S235C* c taSJ图3:线速度的变化图4显示了线加速度的变化，这也可以通过该

6、行或图形的速度衍生斜坡看到0.5h晝线加速度变化图4:线加速度变化线路路径长度的变化，从固定的馈点到缠线点，如图5所示一粗艮塊的泛化图5:线长度的变化四.原型系统设计图6中的系统集成了一个相对较新的气动装置称为流体肌肉。流体肌肉由无纺布和柔性材料制造而成，在空气压力下运作，在膨胀的压力下向横向和纵向扩展。预置压力决定的最高和最低的力量也将适用于特定的收缩。 肌肉非常类似于传统的气缸,除了它有一个非常快速的反应，并没有什么不同高度动态弹簧。它还行为紧张和不压缩,可以适用于除传统的气缸相同直径的10倍以上的力量。肌肉控制舞蹈手臂的动作，并采取了释放导线的力道。这种压力设置适应所需的电线一系列张力变

7、化。旋转简管枢轴点阖电燃送点ill图6:流体动力舞蹈手臂肌肉图7:流体动力蓄电池肌肉肌肉的流体动力蓄电池原型系统如图7所示的气缸使用的蓄电池，是与肌肉所取代， 操作大致是相同的。信号以mV显示，张力范围大概在75N到85N之间，用于测试的线直径为1.5mm在 信号嘈杂的情况下，张力的变化可以清楚地观察到。五.实验结果及分析实验使用上述反应构建原型系统进行了观察。流体技术舞蹈手臂肌肉：低速的手臂最初有反应，但在时间过长便急剧抽搐，如预期 的一样不均匀地运动。导线似乎比没有手臂肌肉震动更剧烈。 第一层的绕组已经从最初的 地方向内约300毫米。在高速时手臂没有回应，只是均匀的立场振动。流体肌肉蓄电池

8、技术：动力蓄电池的肌肉试验得出了以下结果： 在低速累加器根本没 有回应。变压力没有显着差异；在高速时累加器没有回应。由于没有从蓄电池整个系统的 振动响应，使电线和增加穿越振动。在用张力传感器搜集数据之前，蓄电池如图8所示。最大和最小张力分别约为62 N和 46 N。洩：荷累徘的X* 1包电衣纨水力去彳匕6弓123 斗 57 县 O TO 111314151617SO 21图8:没有累加器的张力传感器的输出有累加器的1. 18曜來绻张力变化田3634135791113157192123252729样品图9:有累加器的张力传感器的输出张力传感器在使用时收集的累加器数据如图9所示。最高和最低张力分别

9、约为43 N和 37 No六.结论矩形线圈是配电变压器的重要组成部分。由于线圈形状，线圈的绕组线张力产生波动。这些波动导致电线破损，线圈尺寸不一致，多余的机器磨损，限制对卷绕速度和变压器故 障。从我们现有张力系统的研究，虽然发现流体肌肉累加器是最合适的选择， 但是不是非 常满足我们的要求。由于目前的张力系统，不是一个合适的补偿接口，决定向扁平丝机的 基础上进行实验和仿真。因此，平线中使用的气瓶发生肌肉的机器成为可行性建议。新的绕线机将增加几乎一倍当前卷绕速度， 估计每台机器每年可节省约59100美元。新的张力 系统，可以达到到500 N的恒张力，而不会产生大量的热量，从而克服了当前摩擦的相关

10、问题。外文原文Tension Con trol of a Win di ng Mach ine forRecta ngular CoilsABSTRACTAbstract-This paper in troduces the desig n and testi ng of tension con trol prototype systems to mini mise these tension variations, which includes a fluidic muscle powered take up arm, a fluidic muscle wire accumulator an

11、d felt pad. First the model and their limitati ons for exist ing tensioning systems are ide ntified. Then, they are theoretically an alysed in simulati ons. The simulatio n results show that the accelerati on and decelerati on of the wiredue to the changing wire path length causes a cyclic tension f

12、luctuation. An online tension sensor verified the predict ions of the model. The key for a successful desig n is to remove tension variati ons. We propose to add a wire flatte ning mach ine which in cludes an accumulator and tensioning device, and replace the conven ti onal pn eumatic cyli nder powe

13、ri ng the accumulator with a fluidic muscle. The simulati on shows that the new prototype system almost doubles the winding speed with a tolerable tension fluctuatio n.Keywords Tension control, : Winding Machine, :Rectangular Coil。I. INTRODUCTIONThousa nds of tran sformers are manu factured each yea

14、r in Australia. I n conj unction with power stati ons, substati ons, and power lin es, the distributi on tran sformers provide power to both commercial and reside ntial applicati ons right across the coun try. The manufacture of tran sformers in volves the product ion of windings or coils. These coi

15、ls are gen erally made up of a nu mber of turns of copper wire in betwee n layers of in sulati on paper. They are usually either round or recta ngular.During coil winding a con siste nt tension is required on the wire. The shape of the coil being wound has a sig ni fica nt impact on the quality of t

16、he tension applied by the tensioner. For a round coil the tension does not vary significantly during one revolution, but a rectangular coil causes the wire tension to fluctuate. As a recta ngular coil is being wound, the speed of the wire feedi ng onto the coil accelerates and decelerates as the coi

17、l tur ns on the winding mach ine shaft. This is show n in figure 1 below. This speed variati on is due to the con sta ntly cha nging wire path len gth. In the case of a round coil this is not a problem because the point of con tact of the wire on the coil is fixed.Rotating BobbinFigure 1: Accelerati

18、on due to changing wire path length during windingThe varying tension results in the loading on the machine traverse and main shaft to vary, leading to excessive forces and machine vibrations. This in turn can cause wire cross overs and variations in the coil. When these problems occur, it is a time

19、 consuming task to remedy .In additi on, the coil product ion capacity of the plant is the limiting factor in the plant s overall capacity, so any interruptions to the output of coilslimits the whole factory. Common wire tensioning devices on the market today, only operate at around 5 m/s for heavy

20、wire gauges and up to 30 m/s for very fine wire. Our regularly winds in excess of 10 m/s and is aiming to achieve at least 20 m/s for the en tire wire range of 0.45 mm to 4 mm.This paper further in vestigates the tension fluctuati on problem and to achieve a con siste nt wire tension while winding a

21、 recta ngular coil at high speed. In the follow ing secti on issues of the winding processes are described, and the available tech niq ues for tensing are reviewed.II. BACKGROUNDThe existi ng winding system show n in figure 2 uses felt pads for tensioning. The spool ofwire to bewound is moun ted int

22、o its hous ing vertically and the wire is fed up through the wire guide and felt pads, over the guide pulley and then to the winding machine. The tension is varied by tightening or loosening the large g-clamp.Figure 2: Existing wire mounting and tension setupFelt pads are one of the simplest and mos

23、t com monly usedwire tensioning methods.The photo in figure 2 shows the main components and principle of operation. The configuration shown above uses a g-clamp to apply a squeez ing force to the felt pads. The wire is passed through the felt pads and hence some of the force applied to the felt pads

24、 is also applied to the wire. In operation, the wire travels through these felt pads and the retardation or tension force is created by the friction of the surface of theen amel coated wire rubb ing on the felt pads. The mach ine operator threads the wire through the guides and pulleys and adjusts t

25、he clamping force manually and intuitively. The advantages are: simple and readily available; in expe nsive; adaptive to any operati ng speed. The disadva ntages are also obvious. The Pads wear out quickly leadi ng to loss of tension, the applied force is only gen erally in depe ndent of speed, n ee

26、d to be tightened and replaced frequently, intuitive tension setting does not allow good quality control and no compe nsati on for bobb in shape.III. MODEL IDENTIFICATIONThe wire travels from the spool through the tensioning device, over the mach ine traverse, and onto the rectangular coil. The syst

27、em was simplified as shown in figure 1 to just be a fixed feed point, where the tension is applied, and a rotati ng recta ngle represe nting the bobb in or coil.The desired operati ng speed is 1000 RPM. This gives a wire speed of 10 - 30 m/s depe nding on the coil size at a particular instant in tim

28、e. Figuer3 shows the variation of the wire velocity produced by the recta ngular shape of the bobb in.Figure 3: The wire velocity variationFigure 4 shows the variation of the wire acceleration, which can also be seen by the slope of the line or derivative of the velocity graph.Figure 4: The wire acc

29、eleration variation*The wire path length variation, from the fixed feed point to the wind on point, is shown in figure 5 below.Figure 5: The wire length variationIV. PROTOTYPE SYSTEM DESIGNThe system in figure 6 in corporates a relatively new pn eumatic device called a fluidic muscle. The muscle is

30、made of a woven, flexible material and operates under air pressure. Under pressure it expands laterally and con tracts Ion gitudi nally. A preset pressure determ ines the maximum and minimum forces it will apply for a specific contraction. The muscle is very similar to a conventional pneumatic cylin

31、der, except it has a very fast response and is highly dynamic, not unlike a spring. It also acts in tension and not compression, and can apply 10 times more force than a conventional pneumatic cylinder of the same diameter. The muscle con trols a dancing arm which moves to take up and release the sl

32、ack in the wire. This pressure is set to accommodate the range of wire tensions required.aFtcrt art En-rvi tiFigure 6: Fluidic muscle powered dancing armFigure 7: Fluidic muscle powered accumulatorThe fluidic muscle powered accumulator prototype system is shown in figure 7, where the pneumatic cylin

33、der used in the accumulator is replaced with a muscle, otherwise the operation is the same as outlined previously.While the signal was noisy, the tension variations can be clearly observed. The signal shown is in mV, which tran slates into a tension range of approximately 74 N to 83 N for the 1.5 mm

34、 wire used in the test.V EXPERIMENT RESULT AND ANALYSISThe tests were carried out to observe the resp onse using the above con structed prototype system.Fluidic Muscle Powered Dancing Arm: At low speed the arm responded initially but operated in long sharp jerks, not smooth side to side movements as

35、 expected. The wire appeared to vibrate more with the dancing arm, than without. At the end of winding one layer the resting position of the arm moved from its in itial positi on in ward approximately 300 mm. At high speed the arm did not resp ond, but just vibrated about a mean positi on.Fluidic Mu

36、scle Powered Accumulator: The trial of a large muscle powered accumulator gave the following results:At low speed the accumulator did not appear to resp ond at all. Varying the pressure made no sig ni fica nt differe nee, other tha n pull the wire through the felt pads. At high speed the accumulator

37、 did not resp ond. With no resp onse from the accumulator the whole system vibrated, mak ing the wire and traverse vibrations in crease.The tension sen sor data collected before the accumulator was used is show n in figure 8. The maximum and minimum tension is approximately 62 N and 46 N respectivel

38、y.T ension Variation for 1.1B mm Wire With outAccumulator6560RE.1234567 fi 10 11 12 13 14 IS 16 17 18 19 20 21Samplo1Figure 8: Plot of tension sensor output without the accumulatorThe tension sen sor data collected whe n using the accumulator is show n in figure 9. The maximum and minimum tension is approximately 43 N and 37 N respectively.Figure 9: Plot of tension sensor output with the accumulator去-百s示一VI. CONCLUSIONSRectangular coils are important part of distribution transformers. W