公开(公告)号：US6161408A

公开(公告)日：2000-12-19

申请号：US147585

申请日：1999-01-27

Applicant: Toshiyuki Ooenoki ,  Toshiro Ootani

Inventor： Toshiyuki Ooenoki ,  Toshiro Ootani

IPC: B21D5/02 ,  B21D5/08

CPC classification number: B21D5/02 ,  G05B2219/37403 ,  Y10S72/702

Abstract: A major object of the present invention is to compensate for variations in springback angle resulting from variations in material properties from one lot to the next, for the realization of high angle accuracy bending. Based on the difference between a workpiece actual bend angle detected during bending and an estimated bend angle of a workpiece W at an arbitrary penetration point of an upper die 5, a correction value for prestored data relating to a springback behavior under a processing condition is obtained. Based on the correction value, a final penetration point of the upper die 5 is obtained.

Abstract translation: PCT No.PCT / JP97 / 02847 Sec。 371日期1999年1月27日第 102（e）1999年1月27日PCT PCT 1997年8月15日PCT公布。 公开号WO98 / 08630 1998年3月5日发明内容本发明的主要目的是为了补偿从大量到下一个材料特性的变化而导致的回弹角度的变化，以实现高角度精度弯曲。 基于在上模5的任意贯通点处的工件实际弯曲角度与工件W的估计弯曲角度之间的差异，获得与处理条件下的回弹特性相关的预先存储的数据的校正值 。 基于校正值，获得上模5的最终穿透点。

公开(公告)号：US5836188A

公开(公告)日：1998-11-17

申请号：US826898

申请日：1997-04-09

Applicant: Clark D. Mahan ,  Ralph E. Westerburg ,  Alan W. Bass

Inventor： Clark D. Mahan ,  Ralph E. Westerburg ,  Alan W. Bass

IPC: B21D7/12 ,  B21D7/14 ,  B21B37/00

CPC classification number: B21D7/14 ,  B21D7/12 ,  Y10S72/702

Abstract: Both a method and apparatus are disclosed for forming a bend in an elongated member, such as a tube, at a predetermined target angle. The elongated member is first bent to an angle equal to the target angle plus a predetermined increment. The elongated member is then returned to the target angle and a value representative of the force necessary to maintain the elongated member at the target angle is inputted into a central processor. This inputted value is then compared with a threshold value and, in the event that the inputted value exceeds the threshold value, the predetermined increment is incremented and the above steps are repeated until the inputted value is less than the threshold value. An apparatus for performing the method of the present invention is also disclosed.

Abstract translation: 公开了用于在预定目标角度的细长构件（例如管）中形成弯曲的方法和装置。 首先将细长构件弯曲成等于目标角加上预定增量的角度。 然后细长构件返回到目标角度，并且将代表将细长构件保持在目标角度所需的力的值输入到中央处理器。 然后将该输入值与阈值进行比较，并且在输入值超过阈值的情况下，增加预定增量，并重复上述步骤，直到输入值小于阈值。 还公开了一种用于执行本发明的方法的装置。

公开(公告)号：US5829288A

公开(公告)日：1998-11-03

申请号：US602804

申请日：1996-06-24

Applicant: Wim Serruys

Inventor： Wim Serruys

IPC: B21D5/02 ,  B21D5/01

CPC classification number: B21D5/02 ,  Y10S72/702

Abstract: A method and device for folding a metal sheet to a well-defined angle, in which the sheet is deformed in the recess of a die through a punch being moved above the recess and pressing on the sheet, towards the die, until it reaches a well-defined end position. The movement of the punch is regulated as a function of the folding force and of the folding angle. The punch is moved in the direction of the die until it is in an end position Ya corresponding to: Ya=Yt-dYw-dYr in which Yt is a calculated position, dYw is determined through extrapolation of the course of the folding angle as a function of the position of the punch, and dYr is the correction of the position of the punch which is necessary to compensate for the spring-back of the sheet.

Abstract translation: PCT No.PCT / BE94 / 00052 Sec。 371日期1996年6月24日 102（e）日期1996年6月24日PCT 1994年8月26日PCT公布。 出版物WO95 / 05905 日期1995年3月2日一种用于将金属片折叠到明确定义的角度的方法和装置，其中片材通过在凹部上方移动并在片材上压制的冲头在模具的凹部中变形，朝向模具 ，直到达到一个明确定义的最终位置。 作为折叠力和折叠角度的函数调节冲头的移动。 冲头沿模具的方向移动，直到它处于对应于：Y y = Y t-d Y w-d Y r的终点位置Y，其中Yt是计算的位置，dYw是通过外推折叠角度的程度来确定的 打孔位置的功能，dYr是校正冲头的位置，该位置是补偿纸张弹回的必要条件。

公开(公告)号：US5682780A

公开(公告)日：1997-11-04

申请号：US655849

申请日：1996-05-31

Applicant: Mark T. Girard

Inventor： Mark T. Girard

IPC: G11B5/48 ,  B21D7/12

CPC classification number: G11B5/4833 ,  Y10S72/702 ,  Y10T29/49037 ,  Y10T29/49041

Abstract: A system for adjusting the gram load, static attitude roll and radius geometry of a suspension with a high degree of accuracy and repeatability includes a clamp, load-engaging member, actuator, laser and control system. The mounting region of the suspension to be adjusted is releasably received and clamped by a clamp. A load beam of the suspension is engaged and supported at adjust positions with respect to the clamp by the load beam-engaging member. The load beam-engaging member is driven and positioned by the actuator. IR light from the laser is directed to the spring region of the suspension by optical fibers. The control system includes a pre-adjust input terminal, memory and a controller. Information representatives of a measured pre-adjust fly height gram load, static attitude roll and radius geometry values of the suspension are received at the pre-adjust input terminal. Adjust data representative of load beam adjust positions which will cause the suspension to have a desired post-adjust fly height gram load, static attitude roll and radius geometry values after the load beam is stressed relieved is stored in the memory. The controller is coupled to the pre-adjust input terminal, actuator, laser and memory, and controls the system by: 1) accessing the memory as a function of the measured pre-adjust fly height gram load, static attitude roll and radius geometry values to determine the load beam adjust position which will cause the suspension to have the desired fly height gram load, roll and radius geometry values after the load beam is stressed relieved, 2) actuating the actuator and causing the load beam-engaging member to position the load beam at the adjust position, 3) actuating the laser to stress relieve the spring region of the load beam while the load beam is positioned at the adjust position, and 4) actuating the actuator and causing the load beam-engaging member to release the load beam after the load beam is stress relieved.

公开(公告)号：US5528504A

公开(公告)日：1996-06-18

申请号：US293813

申请日：1994-08-22

Applicant: Harold M. Brewer

Inventor： Harold M. Brewer

IPC: C22F1/04 ,  G06F19/00

CPC classification number: C22F1/04 ,  Y10S72/702

Abstract: A method is disclosed for developing the contour of tools employed for forming members exhibiting complex shapes. The members may be precipitation, heat treatable, metals or metal alloys which are age formed, although they be of any material which exhibits a relationship between a strain applied by a forming tool, or otherwise, and a resulting strain after release of the applied strain. The resulting member may be formed to the desired contour as a result of exposure to an elevated temperature but the member may also be cold formed. The invention is particularly concerned with a methodology for simplifying the analysis of integrally stiffened structures of complex shape. The method of the invention assures proper results on the first occasion the tool is used, thereby resulting in considerable savings of labor and material.

Abstract translation: 公开了一种用于形成用于形成具有复杂形状的构件的工具的轮廓的方法。 这些构件可以是沉淀的，可热处理的，已经形成年龄的金属或金属合金，尽管它们是在成形工具施加的应变之间呈现关系的任何材料，或其他的释放后的所得应变 。 所得到的构件可以由于暴露于升高的温度而形成为期望的轮廓，但是构件也可以是冷的。 本发明特别涉及简化复杂形状的整体加强结构分析的方法。 本发明的方法在第一次使用工具时确保了适当的结果，从而大大节省了劳动力和材料。

公开(公告)号：US5471734A

公开(公告)日：1995-12-05

申请号：US249525

申请日：1994-05-26

Applicant: Michael R. Hatch ,  Stephen P. Williams ,  Jwo-Min Wang

Inventor： Michael R. Hatch ,  Stephen P. Williams ,  Jwo-Min Wang

IPC: G11B5/60 ,  G11B5/48 ,  G11B21/21

CPC classification number: G11B5/4833 ,  G11B5/4826 ,  Y10S72/702 ,  Y10T29/49025 ,  Y10T29/49036

Abstract: An optimized bump and offset along the spring section of a load beam of a head-gimbal assembly ("HGA") in the loaded state redistributes the mass and stiffness distributions of the load beam from a truly flat state, so that the mode shape of the first torsional resonance mode is changed such that the coupling between a drive actuator head arm and the head slider is essentially eliminated. A fabrication method to produce the desired bump and offset, and a characterization method to ascertain that optimized bump and offset parameters have been achieved are also disclosed. By optimizing bump and offset, the slider remains independent from any load beam first torsional vibration even at resonance and/or sway mode resonant frequency of the HGA may be increased.

Abstract translation: 在负载状态下，头部万向节组件（“HGA”）的负载梁的弹簧部分的优化的凸起和偏移将负载梁的质量和刚度分布从真实平坦状态重新分布，使得模型形状 改变第一扭转共振模式，从而基本上消除了驱动致动器头部臂和头部滑块之间的联接。 还公开了产生所需凸块和偏移的制造方法以及用于确定已经实现优化的凸块和偏移参数的表征方法。 通过优化凸块和偏移，即使在谐振和/或摆动模式下，滑块仍然独立于任何负载梁的第一扭转振动，HGA的谐振频率可能会增加。

公开(公告)号：US5148693A

公开(公告)日：1992-09-22

申请号：US783918

申请日：1991-10-29

Applicant: Franco Sartorio ,  Bruno Nicoletta

Inventor： Franco Sartorio ,  Bruno Nicoletta

IPC: B21D5/02

CPC classification number: B21D5/0209 ,  B21D5/006 ,  G01B13/18 ,  Y10S72/702

Abstract: A method for indirect detecting of folding angles (.beta.) of a metal sheet (4) during the folding by a folding machine (1) which has a punch (2), and a die (3) provided with a depressed seat (5) is disclosed. The folding angle (.beta.) is obtained by algebraic summing of an angle (.alpha.) formed by adjacent two walls (10, 10, 13, 13, 13a, 13b) of the punch (2) or the seat (5) and each angle (.alpha.1, .alpha.2) between a portion (7, 8, 8a) of the metal sheet (4) and the said wall. The angles (.alpha.1, .alpha.2) formed between the said portion (7, 8, 8a) and each wall (10, 13, 13a, 13b) are calculated by using the measurements of the distances (D1, D2, D3, D4) from the wall to the portion measured at desired two points on the wall. The distances are detected by a device such as differential transformers (18, 19, 20) and pneumatic gauges (50, 51, 52, 53, 54, 55) incorporated in the punch (2) or the die (3). The angle (.beta., .beta.1, .beta.2) once achieved is calculated during the folding operation after elastic restoring of the metal sheet has been caused. If the angle calculated is less than the desired, a supplementary folding is carried out to achieve a precise folding angle. The whole folding is carried out by a single folding operation without requiring a second positioning of the metal sheet.

Abstract translation: 一种在具有冲头（2）的折叠机（1）和设置有凹陷座（5）的模具（3）折叠期间间接检测金属片（4）的折角（β）的方法， 被披露。 折叠角（β）通过由冲头（2）或座（5）的相邻两个壁（10,10,13,13,13a，13b）形成的角度（α）的代数求和获得，并且每个角度 （4）的部分（7,8,8a）和所述壁之间的角（α1，α2）。 通过使用距离（D1，D2，D3，D4）的测量来计算在所述部分（7,8,8a）和每个壁（10,13,13a，13b）之间形成的角度（α1，α2） ）从墙壁到在墙壁上所需的两点测量的部分。 距离由诸如差分变压器（18,19,20）和并入冲头（2）或模具（3）中的气动计（50,51,52,53,54,55）之类的装置检测。 在金属板的弹性复原之后，在折叠操作期间计算一次实现的角度（β，β1，β2）。 如果计算出的角度小于期望值，则执行补充折叠以实现精确的折叠角度。 整个折叠通过单个折叠操作进行，而不需要金属片的第二定位。

公开(公告)号：US4979385A

公开(公告)日：1990-12-25

申请号：US341397

申请日：1989-04-21

Applicant: Jean LaFrasse ,  Jean-Paul Chastan

Inventor： Jean LaFrasse ,  Jean-Paul Chastan

IPC: B21D7/024 ,  B21D7/14

CPC classification number: B21D7/14 ,  Y10S72/702

Abstract: Process and apparatus for monitoring the backspringing of an elongated deformable elongated element while the element is bend by winding around a forming component. The element is clamped in a section located forward of the bend to be made. After the bend is made, the front section of the element remains clamped while the back section of the element is released. The backspringing value is determine by means of a sensor which makes a measurement on the back section of the element. The backspringing value is detected during a rotation of the element and the forming component around the axis of the bend by detecting when the back section reaches a predetermined position. This process makes it possible to continue bending of the element after detecting the backspringing value.

Abstract translation: 用于监测细长可变形细长元件的后端的过程和装置，同时元件通过缠绕成形部件而弯曲。 元件被夹紧在位于要制造的弯头前面的部分中。 在弯曲之后，元件的前部保持夹紧，而元件的后部被释放。 通过在元件的背部进行测量的传感器来确定后退值。 通过检测背部到达预定位置的时间，在元件和成形部件围绕弯曲轴线的旋转期间检测到后退值。 该过程使得可以在检测到反向值之后继续弯曲元件。

公开(公告)号：US4864509A

公开(公告)日：1989-09-05

申请号：US102484

申请日：1987-09-29

Applicant: Gordon R. Somerville ,  D. Bruce Thomas

Inventor： Gordon R. Somerville ,  D. Bruce Thomas

IPC: B21D5/02 ,  G05B19/401

CPC classification number: B21D5/02 ,  B21D5/004 ,  G05B19/401 ,  G05B2219/37403 ,  G05B2219/41318 ,  G05B2219/45143 ,  Y10S72/702

Abstract: A method and related system for operating a computer controlled press brake system to form a requested bend angle in a workpiece are described. According to the disclosed method, values corresponding to geometrical characteristics of the press brake and a first workpiece are stored, as is a value for the requested bend angle. A ram of the press is operated in a first direction, relative to the die, to a first selected position to bend the first workpiece and to hold the first workpiece to a restrained bend angle. The ram is thereafter operated in a second direction to release the first workpiece to an unrestrained bend angle. The difference between the restrained and unrestrained bend agles of the first workpiece is calculated. Using the values for geometrical characteristics and the requested bend angle, a correction factor is calculated. In accordance with the correction factor, the unrestrained and requested bend angles, the ram is set to travel to a corrected position. The ram is operated to the corrected position to bend a second workpiece, substantially identical to the first workpiece, to bend the second workpiece to the requested angle.

Abstract translation: 描述了一种用于操作计算机控制的压制系统以在工件中形成所请求的弯曲角度的方法和相关系统。 根据所公开的方法，存储对应于压制机和第一工件的几何特性的值，以及所请求的弯曲角度的值。 冲压机的冲头相对于模具沿第一方向操作到第一选定位置，以弯曲第一工件并将第一工件保持在约束的弯曲角度。 此后，压头在第二方向上操作以将第一工件释放到无限制的弯曲角度。 计算第一工件的受限制和无限制弯曲刀片之间的差异。 使用几何特征值和所请求的弯曲角度，计算校正因子。 根据校正因子，无限制和请求的弯曲角度，柱塞被设置为行进到校正位置。 压头操作到校正位置以弯曲与第一工件基本相同的第二工件，以将第二工件弯曲到所请求的角度。

公开(公告)号：US4797831A

公开(公告)日：1989-01-10

申请号：US932107

申请日：1986-11-18

Applicant: Paul A. Dressing ,  John L. Macdonald

Inventor： Paul A. Dressing ,  John L. Macdonald

IPC: B30B15/20 ,  B30B15/24 ,  G05B19/23 ,  G06F15/46 ,  B21D5/02

CPC classification number: G05B19/231 ,  B30B15/20 ,  B30B15/24 ,  Y10S72/702

Abstract: An electronic control system for operating the hydraulic cylinders associated with a press brake wherein independent control of each of the hydraulic cylinders is achieved to insure that the cylinders track against a fixed reference to insure more accurate forming of the workpiece. The cylinder tracking is under computer control which also establishes a creep speed slower than the normal forming speed near the point of ram reversal. A plurality of press brake may be operated simultaneously from the same tracking reference.

Abstract translation: 一种用于操作与压制机相关联的液压缸的电子控制系统，其中实现了对每个液压缸的独立控制，以确保气缸跟踪固定的参考，以确保更精确地形成工件。 气缸跟踪处于计算机控制之下，其也建立了在接近反冲点附近的正常成形速度下的蠕变速度。 多个压制机可以从相同的跟踪参考同时操作。