公开(公告)号：US5050089A

公开(公告)日：1991-09-17

申请号：US404796

申请日：1989-09-08

申请人： Kim A. Stelson ,  Woon-Chung Wang

发明人： Kim A. Stelson ,  Woon-Chung Wang

IPC分类号： B21D7/14 ,  B21D9/07

CPC分类号： B21D7/14 ,  B21D9/073 ,  Y10S72/702

摘要： A tube bending die rotates to cause the tube to be bent over the outer periphery of the die and uses a drive which includes a transducer for measurement of the bending moment required for bending the tube. The bending moment signal is used in conjunction with a signal indicating the total amount of bend to control the number of degrees of bending and to overbend the tube an amount which is a function of the bending moment required to bend the tube, to compensate for springback. In its simplest form, the bending die is a rotating element, and the drive for rotating the die can include a force measuring link which can be converted into bending moment required for bending is used as a measured parameter for an equation which provides a signal indicating the amount of angular overbending needed to compensate for springback in an online, real time process.

摘要翻译： 管弯曲模具旋转以使管弯曲在模具的外周上，并且使用包括用于测量弯曲管所需的弯矩的换能器的驱动器。 弯矩信号与指示弯曲总量的信号一起使用以控制弯曲度数，并且使管弯曲一定量，该量是弯曲管所需的弯矩的函数，以补偿回弹 。 在其最简单的形式中，弯曲模具是旋转元件，并且用于旋转模具的驱动器可以包括可以转换成弯曲所需的弯矩的力测量连杆作为用于提供指示的信号的等式的测量参数 在线实时过程中需要补偿角度过弯的量。

公开(公告)号：US07995777B2

公开(公告)日：2011-08-09

申请号：US11538135

申请日：2006-10-03

申请人： Xun Yu ,  Rajesh Rajamani ,  Kim A. Stelson ,  Tianhong Cui

发明人： Xun Yu ,  Rajesh Rajamani ,  Kim A. Stelson ,  Tianhong Cui

IPC分类号： H04R25/00

CPC分类号： H04R17/005 ,  B06B1/0688 ,  H04R3/00 ,  H04R31/00

摘要： A thin film acoustic transducer is formed with an electrically actuatable substantially transparent thin film. Substantially transparent conductive thin films are supported on both sides of the electrically actuatable substantially transparent thin film. The thin film transducer may be used to sense sound, or produce sound in various embodiments. In further embodiments, the film may be attached to a window, and operate as a speaker for an audio system, or may provide noise cancellation functions. In further embodiments, the film may be attached to a computer monitor, touch panel, poster, or other surface, and operate as a speaker. A method of forming carbon nanotube thin films uses a layer by layer assembly technique and a positively charged hydrophilic layer on a thin film substrate.

摘要翻译： 薄膜声换能器形成有可电致动的基本上透明的薄膜。 基本上透明的导电薄膜被支撑在可电致动的基本上透明的薄膜的两侧。 薄膜换能器可用于在各种实施例中感测声音或产生声音。 在另外的实施例中，胶片可以附接到窗户，并且用作音频系统的扬声器，或者可以提供噪声消除功能。 在另外的实施例中，胶片可以附接到计算机监视器，触摸面板，海报或其他表面，并且作为扬声器操作。 形成碳纳米管薄膜的方法是在薄膜基板上使用逐层组装技术和带正电荷的亲水层。

公开(公告)号：US4408471A

公开(公告)日：1983-10-11

申请号：US201999

申请日：1980-10-29

申请人： David C. Gossard ,  John West ,  Kim A. Stelson ,  Blair Allison ,  R. Davis Webb, Jr. ,  David Hardt

发明人： David C. Gossard ,  John West ,  Kim A. Stelson ,  Blair Allison ,  R. Davis Webb, Jr. ,  David Hardt

IPC分类号： B21D5/02

CPC分类号： B21D5/006 ,  B21D5/02 ,  Y10S72/702

摘要： An electronic adaptive control system for use with hydraulic press brakes to provide compensation for material spring back to accurately produce a desired bend angle in the work piece with a single ram stroke. Fixed input parameters associated with the press brake and material properties, together with ram position and force data are continuously input to a digital computer which calculates the precise point of punch penetration necessary to reverse ram movement in order to produce the desired bend angle in the work piece. By using in-process measurements, a significant savings in machine set-up-time can be achieved in order to produce an accurate bend angle in the work piece the first time and every time.

摘要翻译： 一种电子自适应控制系统，用于液压机制动器，以提供材料回弹的补偿，以用单个冲程行程在工件中精确地产生所需的弯曲角度。 与压力制动和材料特性相关联的固定输入参数以及柱塞位置和力数据连续输入到数字计算机，该数字计算机计算反向柱塞运动所需的冲头穿透的精确点，以便在工件中产生所需的弯曲角度 片。 通过使用过程中的测量，可以实现显着节省机器设置时间，以便在第一次和每次在工件上产生精确的弯曲角度。