公开(公告)号：US06722181B2

公开(公告)日：2004-04-20

申请号：US10195524

申请日：2002-07-16

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D1122

CPC classification number: B21D5/02

Abstract: A method for bending a work of a plate shape by moving a die with the work being butted against a butting member, and an apparatus for executing the method are provided. The bending apparatus is provided with an input unit for inputting data on bending conditions including respective target values of a bending angle and a bending dimension, as well as respective measured values of a bending angle and a bending dimension of the work obtained in trial bending. A control device installed in the apparatus executes an initial computation for computing an operation amount of the die when the data on bending conditions are inputted. Further, the control device executes computation for a correction value for an operation amount of the die and computation for an estimated value of a bending dimension when the respective measured values of the bending angle and the bending dimension obtained in trial bending are inputted. This way, the control device controls a reciprocating mechanism to correct the position of the butting member according to the estimated value of a bending dimension, and to move the die according to the corrected operation amount.

Abstract translation: 提供了通过将工件对准对接构件移动的模具来弯曲板形的工件的方法，以及用于执行该方法的装置。 弯曲装置设置有用于输入弯曲条件的数据的输入单元，包括弯曲角度和弯曲尺寸的各个目标值以及试验弯曲中获得的工件的弯曲角度和弯曲尺寸的各自的测量值。 安装在装置中的控制装置执行初始计算，用于当输入关于弯曲条件的数据时计算模具的操作量。 此外，当输入弯曲角度和试验弯曲中获得的弯曲尺寸的各个测量值时，控制装置执行针对模具的操作量的校正值的计算和用于弯曲尺寸的估计值的计算。 这样，控制装置根据弯曲尺寸的估计值来控制往复运动机构来校正对接构件的位置，并根据校正后的操作量移动模具。

公开(公告)号：US6032509A

公开(公告)日：2000-03-07

申请号：US251523

申请日：1999-02-17

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D5/02 ,  B21J13/03 ,  B30B15/02

CPC classification number: B21D5/0272

Abstract: A press brake comprising a bed for supporting a lower mold on the upper surface thereof, a ram for supporting an upper mold in opposition to said lower mold a driver for causing either the ram or the bed to move for bending a workpiece between the upper and lower molds, and a distance adjusting device for adjusting the distance between the upper and lower molds via operation of a wedging unit and a pair of reciprocating units. The wedging unit is disposed either between the ram and the upper mold or between the bed and lower mold, and comprises a pair of movable wedges vertically disposed and a stationary wedge disposed between the movable wedges in contact with the movable wedges. Each of the contacting surfaces of the wedges is formed by a plurality of inclined planes having different angles of inclination. The reciprocating units are connected to the movable wedges to move the movable wedges along the length of the molds. By shifting the movable wedges a predetermined distance in correspondence with actual length of the workpiece, the wedging unit is displaced corresponding to a deflection curve of the bed and the ram, and the workpiece bent at a proper bending angle throughout the whole length thereof.

Abstract translation: 一种压制机，包括用于在其上表面上支撑下模具的床，用于支撑与所述下模相对的上模的冲头，用于使所述冲头或所述床移动以将工件弯曲在上和 下模具，以及用于通过楔形单元和一对往复单元的操作来调节上模和下模之间的距离的距离调节装置。 楔形单元设置在冲头和上模之间或床与下模之间，并且包括一对垂直设置的可动楔形件和设置在与可动楔形体接触的可移动楔块之间的固定楔形件。 楔的每个接触表面由具有不同倾斜角度的多个倾斜平面形成。 往复运动单元连接到可动楔形件，以沿着模具的长度移动可动楔形件。 通过将可动楔形物与工件的实际长度相对应的预定距离移动，楔形单元相应于床和冲头的偏转曲线移动，并且工件在其整个长度上弯曲成适当的弯曲角度。

公开(公告)号：US5865056A

公开(公告)日：1999-02-02

申请号：US884757

申请日：1997-06-30

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D5/02 ,  B21D5/00 ,  B21D11/22

CPC classification number: B21D5/002

Abstract: A method and an apparatus for executing a bending process on a workpiece plate is provided wherein a rear edge of the workpiece plate is place in contact with stop members of a back gauge unit. Simultaneous with input of target value of bending dimensions, a controller provides drive units of the stop members with operative amounts for achieving front/rear directional positioning of the stop members and a gradient angle of a horizontal surface a stop surface corresponding to the target value. In response to the effective value of the operative amount, the drive units are activated to cause stop members to be moved to predetermined positions. After executing a trial bending of a workpiece plate, bending dimensions at two arbitrary bent portions of the processed workpiece plate are measured. When the measured values differ from the target value are input, based on the input values and the target value, the controller computes corrective values for operative amounts of the drive units in order that the stop members can correctively be positioned based on the corrective values, and executes corrective positioning of the stop members based on the calculated values.

Abstract translation: 提供了一种用于在工件板上执行弯曲加工的方法和装置，其中工件板的后边缘与后测量计单元的止动构件接触。 与输入目标值的弯曲尺寸同时，控制器提供止动构件的驱动单元具有用于实现止动构件的前/后定向定位的操作量和水平表面与目标值对应的止挡面的倾斜角。 响应于操作量的有效值，激活驱动单元以使止动构件移动到预定位置。 在执行工件板的试弯之后，测量经处理的工件板的两个任意弯曲部分处的弯曲尺寸。 当测量值与目标值不同时，基于输入值和目标值，控制器计算驱动单元的操作量的校正值，以便基于校正值校正定位停止构件， 并基于计算值执行停止构件的校正定位。

公开(公告)号：US5497647A

公开(公告)日：1996-03-12

申请号：US259599

申请日：1994-06-14

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D5/02 ,  B21D5/00

CPC classification number: B21D5/02 ,  Y10S72/702

Abstract: A method and equipment for bending a work to the extent of a target bending angle, including a first process of bending to bend a work with a ram driven by a two-shaft system having a pair of right and left drive mechanisms to the extent of the quantity of motion for each shaft corresponding to the target bending angle, a measurement process to measure the bending angles at both ends of the work bent in the first process of bending, a correction process to correct the quantity of motion for each shaft according to each error between the target bending angle and the respective bending angles at both ends of the work measured in the measurement process, and a second process of bending to bend the work with the ram driven by the two-shaft system in which each shaft is actuated by each drive mechanism to the extent of the quantity of motion for each shaft corrected by the correction process, all of the above processes being performed in series.

Abstract translation: 一种用于将工件弯曲到目标弯曲角度的方法和设备，该方法和设备包括弯曲工件的第一过程，所述第一工艺是由具有一对左右驱动机构的两轴系统驱动的压头弯曲工件， 对应于目标弯曲角度的每个轴的运动量，测量在第一弯曲过程中弯曲的工件的两端处的弯曲角度的测量处理，校正根据每个轴的运动量，根据 目标弯曲角度与在测量过程中测量的工件两端的相应弯曲角度之间的每个误差，以及第二个弯曲工作，其中弯曲工作与由每个轴致动的双轴系统驱动的柱塞 通过每个驱动机构到通过校正过程校正的每个轴的运动量的程度，所有上述处理都是串联执行的。

公开(公告)号：US06240758B1

公开(公告)日：2001-06-05

申请号：US09334514

申请日：1999-06-21

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D500

CPC classification number: B21D5/02 ,  B21J9/12 ,  B21J9/20 ,  B30B1/323 ,  B30B15/161

Abstract: A hydraulic machine for operation such as for pressurizing a workpiece and molding products from materials by using a reciprocation mechanism comprising a hydraulic cylinder unit. The cylinder unit comprises two types cylinder chambers having different cross-sectional areas, and a third or plural cylinder chambers. Hydraulic oil sent out from a hydraulic pump driven by a servo motor, is fed through a hydraulic circuit into the cylinder unit. The shifting position of the reciprocation movement is detected, and path switching in the hydraulic circuit and revolving operation of the servo motor are controlled on the basis of the detected shifting position. In case the reciprocation movement is used for pressurizing a workpiece by a die, the hydraulic oil is fed to the cylinder chamber for forward of small cross-sectional area until slightly before the die comes into contact against the workpiece, and the die shifts at high speed relative to a workpiece. Subsequently, the path switching is done to lead the hydraulic oil into the cylinder chamber of large cross-sectional area, and the die moves at a low speed relative to the workpiece.

Abstract translation: 一种用于操作的液压机，例如用于对工件进行加压并且通过使用包括液压缸单元的往复运动机构从材料模制产品。 气缸单元包括具有不同横截面积的两种气缸室，以及第三或多个气缸室。 从由伺服电机驱动的液压泵发出的液压油通过液压回路进入气缸单元。 检测往复运动的移动位置，根据检测到的换档位置来控制液压回路中的路径切换和伺服电动机的回转运转。 在往复运动用于通过模具对工件进行加压的情况下，液压油在小截面积前进到气缸室，直到模具接触到工件之前略微移动，并且模具高度移动 相对于工件的速度。 随后，进行路径切换以将液压油引导到具有大横截面积的气缸室中，并且模具相对于工件以低速移动。

公开(公告)号：US4498328A

公开(公告)日：1985-02-12

申请号：US487370

申请日：1983-04-21

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D5/02 ,  B21D37/00

CPC classification number: B21D5/0209 ,  B21D5/0236

Abstract: A press includes a table for receiving a lower mold and a movable ram which moves up-and-down relative to the table, the ram being provided with a holder for supporting the upper mold utilizing an adapter mounted in alignment on the lower edge of the ram, the adapter being provided with an eccentric shaft member which is operable to adjust the vertical position of the holder relative to the ram by rotating the eccentric shaft member.

Abstract translation: 压力机包括用于接收下模的工作台和相对于工作台上下移动的活动压头，所述压头设置有用于使用适配器来支撑所述上模的保持器，所述适配器安装在所述下模具的下边缘上 转接器设置有偏心轴构件，该偏心轴构件可操作以通过旋转偏心轴构件来调节保持器相对于压头的垂直位置。