公开(公告)号：US20040170401A1

公开(公告)日：2004-09-02

申请号：US10798175

申请日：2004-03-11

Applicant: NSK LTD.

Inventor： Akira Tsubouchi ,  Kiyoshi Okubo ,  Yasushi Watanabe

IPC: H04N005/781 ,  B21D022/00 ,  B21D022/21

CPC classification number: B21K1/767 ,  B21C37/155 ,  B21K1/063 ,  B62D3/126 ,  Y10S72/702 ,  Y10T29/49467 ,  Y10T29/49474 ,  Y10T29/49476 ,  Y10T74/1967 ,  Y10T74/19949

Abstract: A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slant die surfaces for canceling elastic recovering generated at the workpiece when the workpiece is removed from the first die set. At the second step, a row of rack teeth is press-formed on the flat bottom portion of the workpiece formed in the first step. The die set used at the second step is provided with a recess for releasing surplus workpiece material within the die clearance at a stroke end of the pressworking. At the third step, each of a pair of legs of the workpiece is bent in a semi-circular shape so as to be butted to each other. At this time, a mandrel is inserted between the legs of the workpiece.

公开(公告)号：US06751993B2

公开(公告)日：2004-06-22

申请号：US10320689

申请日：2002-12-17

Applicant: Katsuji Sekita ,  Tadahiko Nagasawa

Inventor： Katsuji Sekita ,  Tadahiko Nagasawa

IPC: B21D502

CPC classification number: B21D5/02 ,  Y10S72/702

Abstract: A bending method is provided for bending two sides of a workpiece to form flanges. The bending method includes measuring a bent flange to obtain a flange dimension. The bending method also includes setting a back gauge value for processing another flange, based on a measured dimension of the workpiece. The other flange is bent using the set back gauge value.

Abstract translation: 提供弯曲方法来弯曲工件的两侧以形成凸缘。 弯曲方法包括测量弯曲凸缘以获得凸缘尺寸。 弯曲方法还包括基于所测量的工件尺寸来设定用于处理另一凸缘的后测量值。 另一个法兰使用设定背压值弯曲。

公开(公告)号：US06644082B2

公开(公告)日：2003-11-11

申请号：US10300794

申请日：2002-11-21

Applicant: Brahim Chebbi

Inventor： Brahim Chebbi

IPC: B21C5100

CPC classification number: B21D5/02 ,  B21D5/006 ,  B21D5/0209 ,  Y10S72/702

Abstract: A support medium is capable of being read by a numerical control system of a bending machine. The support medium stores program instructions for searching, in a memory region storing at least one group of data, each containing bending conditions, a bend angle and at least one penetration depth, whether input data including a desired bend angle and bending conditions are stored in the memory region, in a same group of data. The support medium sends a signal to the bending machine so that the bending machine executes a bending according to the penetration depth included in the same group of data.

公开(公告)号：US20010020328A1

公开(公告)日：2001-09-13

申请号：US09803560

申请日：2001-03-09

Applicant: NSK Ltd.

Inventor： Akira Tsubouchi ,  Kiyoshi Okubo ,  Yasushi Watanabe

IPC: B21D053/00

CPC classification number: B21K1/767 ,  B21C37/155 ,  B21K1/063 ,  B62D3/126 ,  Y10S72/702 ,  Y10T29/49467 ,  Y10T29/49474 ,  Y10T29/49476 ,  Y10T74/1967 ,  Y10T74/19949

Abstract: A hollow rack shaft is manufactured through a first step, a second step and a third step. At the first step, the plate-like workpiece of substantial rectangular shape is press formed into a gutter-like shape. The first die set used at this step is provided with slant die surfaces for canceling elastic recovering generated at the workpiece when the workpiece is removed from the first die set. At the second step, a row of rack teeth is press-formed on the flat bottom portion of the workpiece formed in the first step. The die set used at the second step is provided with a recess for releasing surplus workpiece material within the die clearance at a stroke end of the pressworking. At the third step, each of a pair of legs of the workpiece is bent in a semi-circular shape so as to be butted to each other. At this time, a mandrel is inserted between the legs of the workpiece.

Abstract translation: 通过第一步骤，第二步骤和第三步骤制造空心齿条轴。 在第一步骤中，大致矩形的板状工件被压制成沟槽状。 在该步骤中使用的第一模具设置有倾斜的模具表面，用于抵消当从第一模具组移除工件时在工件处产生的弹性恢复。 在第二步骤中，在第一步骤中形成的工件的平坦底部上压制一排齿条齿。 在第二步骤中使用的模具设置有用于在冲压加工的冲程端处释放模具间隙内的多余工件材料的凹部。 在第三步骤中，工件的一对腿中的每一个被弯曲成半圆形以便彼此对接。 此时，心轴插入工件的腿部之间。

公开(公告)号：US5797289A

公开(公告)日：1998-08-25

申请号：US795069

申请日：1997-02-05

Applicant: Masaki Hoshino

Inventor： Masaki Hoshino

IPC: B21D7/025 ,  B21D7/024 ,  B21D7/12 ,  B21D7/14 ,  B21D7/04

CPC classification number: B21D7/14 ,  B21D7/024 ,  Y10S72/702

Abstract: A tube bending system for bending all tubes in a preset manner effectively from the beginning of works by detecting a degree of bending of a tube which varies during a bending process in high precision by a displacement sensor and by accurately comparing the detected value of the degree of bending of the tube detected by the displacement sensor with a control value written in advance in a program in a memory. The displacement sensor is disposed so as to be able to detect the position of the tube to be bent on the side of a reaction receiving section between a gripper and the reaction receiving section. The displacement sensor is composed of a detecting section and a transducing section. A value which indicates the position of the tube to be bent detected by the detecting section is transduced to a degree of bending of the tube to be bent by the transducing section and the transduced degree of bending is transmitted to a controller during repetitive operation for bending the tube so that the degree of bending approaches to the predetermined degree of bending.

Abstract translation: 一种管弯曲系统，用于通过检测通过位移传感器以高精度在弯曲过程中变化的管的弯曲程度，并且通过精确地比较检测到的度数 由存储器中的程序预先写入的控制值由位移传感器检测到的管的弯曲。 位移传感器被设置成能够检测在夹持器和反应接收部之间的反应容纳部侧的弯曲管的位置。 位移传感器由检测部和换能部构成。 表示由检测部检测到的弯曲管的位置的值被转换部分转换成弯曲管的弯曲程度，并且在弯曲的重复操作期间将转换的弯曲度传递到控制器 使得弯曲度接近预定弯曲度的管。

公开(公告)号：US5461893A

公开(公告)日：1995-10-31

申请号：US69614

申请日：1993-05-28

Applicant: Arthur W. Tyler

Inventor： Arthur W. Tyler

IPC: B21D5/01 ,  B21D5/04 ,  B21D7/022 ,  B21D7/12

CPC classification number: B21D37/205 ,  B21D5/042 ,  Y10S72/702

Abstract: An apparatus and method is provided for the automated bending of continuous reels of metal strips, particularly for the bending of sharpened metal strip into steel rule dies. A sequence of steps is provided to perform a number of bends in the strip, at various positions on the strip, and of various magnitudes, in order to approximate the shape desired. Data containing the shape to be produced is introduced into a programmable computation and control system, which also contains data regarding the physical characteristics of the metal strip. An optical detection system is used to detect the shape produced at every step, and an electrical signal is fed back from the detection system into the computation and control system to compensate for any errors, particularly those errors caused by springback of the metal strip.

Abstract translation: 提供了一种用于自动弯曲金属条的连续卷轴的装置和方法，特别是用于将尖锐的金属条弯曲成钢规定模具。 提供了一系列步骤以在条带中，在条带上的各个位置以及各种大小上执行多个弯曲，以便近似所需的形状。 包含要生产的形状的数据被引入到可编程的计算和控制系统中，该系统还包含关于金属带的物理特性的数据。 光检测系统用于检测每一步产生的形状，并将电信号从检测系统反馈到计算和控制系统中，以补偿任何错误，特别是由金属带回弹引起的错误。

公开(公告)号：US5275031A

公开(公告)日：1994-01-04

申请号：US893714

申请日：1992-06-05

Applicant: James A. Whiteside ,  Billy W. Morgan

Inventor： James A. Whiteside ,  Billy W. Morgan

IPC: B21D7/024 ,  B21D7/14 ,  B21D7/04

CPC classification number: B21D7/024 ,  B21D7/14 ,  Y10S72/702

Abstract: A bend correction apparatus for bending a workpiece subject to springback, the apparatus having a pressure die for holding a workpiece, a radius die for providing a radius form about which the workpiece is bent, and a clamping die for engaging and bending the workpiece relative to the pressure die and about a portion of the radius die. A microprocessor moves the clamping die between a bend angle position in which the workpiece is bent about the radius die to a predetermined angle relative to the clamping die and a relieved position in which the clamping die is not bending the workpiece. A sensor, movable conjointly with the radius die, engages the workpiece in a springback position upon rotation of the radius die toward the workpiece and sends a signal to the microprocessor upon contact with the workpiece. The microprocessor then determines a rebend angle to achieve the desired degree of bend in the workpiece and moves the clamping die means and radius die to the rebend angle to bend the workpiece to that angle and storing the rebend angle for bending subsequent workpieces.

Abstract translation: 一种用于弯曲回弹的工件的弯曲修正装置，具有用于保持工件的压力模具的装置，用于提供工件弯曲的半径形式的半径模具和用于相对于工件弯曲的夹紧模具 压模和大约一半的半径模具。 微处理器将夹持模具移动在弯曲角度位置，其中工件围绕半径模具弯曲到相对于夹紧模具预定的角度，并且夹紧模具不在其中弯曲工件的释放位置。 与半径模具结合运动的传感器在半径模具朝向工件旋转时在回弹位置接合工件，并在与工件接触时向微处理器发送信号。 然后，微处理器确定再生角度以实现工件中期望的弯曲程度，并将夹紧模具装置和半径模具移动到重新形成角度，以将工件弯曲成该角度并存储用于弯曲后续工件的重新变形角度。

公开(公告)号：US5099666A

公开(公告)日：1992-03-31

申请号：US612574

申请日：1990-11-14

Applicant: Franco Sartorio ,  Bruno Nicoletta

Inventor： Franco Sartorio ,  Bruno Nicoletta

IPC: B21D5/02

CPC classification number: B21D5/0209 ,  Y10S72/702

Abstract: A method and a device 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 alebraic 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 achieve 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）折叠期间间接地检测金属片（4）的折叠角（β）的装置，以及设置有凹座的模具（3） （5）。 折叠角（β）通过由冲头（2）或座（5）的相邻的两个壁（10,10,13,13,13a，13b）形成的角度（α）和每个角度 （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后的折叠操作期间，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：US5050089A

公开(公告)日：1991-09-17

申请号：US404796

申请日：1989-09-08

Applicant: Kim A. Stelson ,  Woon-Chung Wang

Inventor： Kim A. Stelson ,  Woon-Chung Wang

IPC: B21D7/14 ,  B21D9/07

CPC classification number: B21D7/14 ,  B21D9/073 ,  Y10S72/702

Abstract: 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.

Abstract translation: 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：US4969345A

公开(公告)日：1990-11-13

申请号：US306161

申请日：1989-02-06

Applicant: Louis M. Zonneveld ,  Friedrich W. Thoolen

Inventor： Louis M. Zonneveld ,  Friedrich W. Thoolen

IPC: B21D19/04

CPC classification number: B21D19/043 ,  Y10S72/702

Abstract: An upstanding collar is formed around a hole in a sheet metal blank by means of a converter tool which converts an edge region bordering the hole into the collar, while the blank is rotated relative to the converter tool. This method comprises (i) in a first stage, converting a portion of the blank into a first turned-up rim, (ii) after the first stage, converting a further portion of the blank into a second turned-up rim, (iii) in at least one further stage repeating step (ii) successively converting each time a further portion of the blank into another turned-up rim, until the whole of the edge region has been converted, wherein (a) in at least one of the stages the conversion takes place on free air, and (b) in all these stages the conversion takes place in the same direction relative to the blank. A converter tool increasing stepwise in diameter may be used.