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公开(公告)号：US5243902A
公开(公告)日：1993-09-14
申请号：US752506
申请日：1991-08-19
Applicant: Jean Plazenet
Inventor： Jean Plazenet
CPC classification number: B21D5/0272 , B30B15/24
Abstract: A bending press is equipped with a movable lower platen actuated by at least three hydraulic jacks, two of which are placed at the lateral ends of the movable platen and at least one of which is placed at the center along the axis of the platen. The hydraulic circuit is associated with a device for detecting the presence of any tilting torque on the movable platen, and with a comparator and computer system connected to the detection device. The jacks are connected to a common directional distributor via pressure control units controlled by the comparator and computer system. This system is capable of producing a continuous reduction in pressure exerted on the jack located on the side opposite to the direction of the tilting torque and possibly also on the jack located at the center so as to produce a torque in opposition to the tilting torque.
Abstract translation: PCT No.PCT / FR90 / 00918 Sec。 371日期1991年8月19日 102（e）1991年8月19日PCT PCT 1990年12月18日PCT公布。 第WO91 / 08894号公报 日期：1991年6月27日。弯曲压力机配备有由至少三个液压千斤顶致动的可动下压板，其中两个液压千斤顶被放置在可动压板的横向端部，并且其中至少一个放置在中心 压板的轴线。 液压回路与用于检测可动压板上任何倾斜转矩的存在以及连接到检测装置的比较器和计算机系统相关联的装置。 千斤顶通过由比较器和计算机系统控制的压力控制单元连接到公共定向分配器。 该系统能够连续地降低施加在位于与倾斜转矩方向相反的一侧的千斤顶处的压力，并且还可能产生位于中心的千斤顶，以产生与倾斜转矩相反的扭矩。
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公开(公告)号：US5199293A
公开(公告)日：1993-04-06
申请号：US795045
申请日：1991-11-20
Applicant: Alberto A. Catti , Franco Sartorio , Stefano Vergano
Inventor： Alberto A. Catti , Franco Sartorio , Stefano Vergano
IPC: B21D5/02
CPC classification number: B21D5/0272 , B21D5/02
Abstract: The press is of the type including a pair of tool holders mounted in a frame and carrying cooperating tools (die and punch). At least one of the tool holders is motor driven and is movable towards the other tool holder. According to the invention, the press includes a first driver arranged to make one of the tool holders travel a fairly long distance towards the other tool and a second driver, distinct from the first, for making this same tool holder or the other tool holder perform, a subsequent, fairly short working stroke to bend the sheet metal and to effect any coining of the bend. Preferably both of the tool holders are movable, the second driver being arranged to make the respective tool holder complete a fairly short bending stroke, and the press includes a third driver, distinct from the first and second, arranged to make the same tool holder and the other tool holder complete a vertical stroke for coining the bend.
Abstract translation: 压力机的类型包括安装在框架中的一对工具架，并承载协作工具（模具和冲头）。 至少一个工具架是电动机驱动的并且可朝向另一个工具架移动。 根据本发明，印刷机包括第一驱动器，其布置成使得一个工具夹具相对于另一个工具移动相当长的距离，以及与第一驱动器不同于第一驱动器的第二驱动器，用于使该相同的工具架或另一个工具架执行 ，随后的相当短的工作冲程，以弯曲金属板并实现弯曲的任何压印。 优选地，两个工具保持器是可移动的，第二驱动器被布置成使相应的工具架完成相当短的弯曲行程，并且压力机包括与第一和第二驱动器不同的第三驱动器，其被设置成制造相同的工具架 另一个工具架完成了一个垂直冲程，用于压弯。
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公开(公告)号：US5121626A
公开(公告)日：1992-06-16
申请号：US740679
申请日：1991-08-06
Applicant: John B. Baldwin
Inventor： John B. Baldwin
IPC: B21D5/02
CPC classification number: B21D5/0272 , B21D5/02 , B21D5/0209 , Y10T83/9478
Abstract: An adjustable support for a die of a press brake includes a mounting bracket which has first and second interconnected portions. A mounting device connects the first portion of the mounting bracket to the ram or bed of the press brake and maintains the second portion of the mounting bracket adjacent a bearing surface of the ram or bed of the press brake and from movement relative to the bearing surface. An adjustment device is provided for engaging the bearing surface of the die and maintaining the die from tipping movement relative to the bearing surface of the press brake during loading of the die. The adjustment device is connected to the second portion of the mounting bracket. The adjustable support is particularly suited for plate forming and bending operations.
Abstract translation: 用于压制机的模具的可调节支撑件包括具有第一和第二互连部分的安装支架。 安装装置将安装支架的第一部分连接到压制机的冲头或床，并将安装支架的第二部分保持在压制机的压头或床的支承表面附近，并且相对于支承表面运动 。 提供了一种调节装置，用于接合模具的支承表面，并在模具加载期间保持模具相对于压制机的支承表面的倾翻运动。 调节装置连接到安装支架的第二部分。 可调节支架特别适用于板材成型和弯曲操作。
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公开(公告)号：US5092151A
公开(公告)日：1992-03-03
申请号：US459292
申请日：1989-12-29
Applicant: Alberto A. Catti , Franco Sartorio , Stefano Vergano
Inventor： Alberto A. Catti , Franco Sartorio , Stefano Vergano
IPC: B21D5/02
CPC classification number: B21D5/0272 , B21D5/02
Abstract: The press is of the type including a pair of tool-holders mounted in a frame and carrying cooperating tools (die and punch). At least one of the tool-holders is motor-driven and is movable towards the other tool-holder. According to the invention, the press includes first drive means arranged to make one of the tool-holders travel a fairly long distance towards the other tool and second drive means, distinct from the first, for making this same tool-holder or the other tool-holder perform a subsequent, fairly-short working stroke to bend the sheet metal and to effect any coining of the bend. Preferably both of the tool-holders are movable, the second drive means being arranged to make the respective tool-holder complete a fairly short bending stroke, and the press includes third drive means, distinct from the first and second, arranged to make the same tool-holder and the other tool-holder complete a virtual stroke for coining the bend.
Abstract translation: 压力机的类型包括安装在框架中的一对工具架，并承载协作工具（模具和冲头）。 至少一个工具架是电机驱动的，并且可以朝着另一个工具架移动。 根据本发明，压机包括第一驱动装置，其布置成使得一个工具架能够相对于另一个工具移动相当长的距离，而与第一驱动装置不同的第二驱动装置用于制造该相同的工具架或另一个工具 持有人执行随后的相当短的工作冲程以弯曲钣金并实现弯曲的任何压印。 优选地，两个工具保持器都是可移动的，第二驱动装置被布置成使得相应的工具架完成相当短的弯曲行程，并且压力机包括不同于第一和第二驱动装置的第三驱动装置，以使其相同 工具架和另一个工具架完成了一个虚拟冲程，用于压弯。
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公开(公告)号：US5067340A
公开(公告)日：1991-11-26
申请号：US345675
申请日：1989-05-03
Applicant: Donald C. MacGregor
Inventor： Donald C. MacGregor
IPC: B21D5/02
CPC classification number: B21D5/0272
Abstract: A bending press comprising a lower frame member, an upper frame member mounted above the lower frame member, tool holding means positioned in operative association with one of the frame members for holding bending tool means, die holding means positioned in operative association with the other of the frame members for holding die means, a plurality of first hydraulic rams mounted in laterally spaced relationship to be operative between the tool holding means and the associated frame member, a plurality of second hydraulic rams mounted in laterally spaced relationship to be operative between the die holding means and the associated frame member, the first hydraulic rams being adapted to be hydraulically connected together during use for hydraulic fluid to distribute a load applied to a workpiece during use evenly between the first hydraulic rams and provide compensation for frame member deflection during use, and the second hydraulic rams being adapted to be hydraulically connected together during use for hydraulic fluid to distribute a load applied to a workpiece during use evenly between the second hydraulic rams and provide compensation from frame member deflection during use.
Abstract translation: 一种弯曲压力机，包括下框架构件，安装在下框架构件上方的上框架构件，工具保持装置，其定位成与框架构件中的一个可操作地关联，用于保持弯曲工具装置，模具保持装置定位成与另一个 用于保持模具装置的框架构件，以横向间隔开的关系安装的多个第一液压柱塞，以在工具保持装置和相关联的框架构件之间操作;多个第二液压柱塞，其以横向间隔的关系安装，以在模具之间操作 保持装置和相关联的框架构件，第一液压柱塞在使用期间被液压地连接在一起用于液压流体，以在第一液压柱塞期间均匀地分配施加到工件上的载荷，并且在使用期间提供对框架构件偏转的补偿， 并且第二液压柱塞适于被液压地连接到齿条 在使用期间液压流体在使用期间均匀地分配施加到工件上的负载在第二液压柱塞之间并且在使用期间从框架构件偏转提供补偿。
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Patent Agency Ranking
公开(公告)号：US4672831A
公开(公告)日：1987-06-16
申请号：US651754
申请日：1984-09-18
Applicant: Tsuneo Kogure , Yuji Tsuchiyama , Tadashi Amano , Hideaki Takahashi , Katsuji Sekita , Ichio Akami
Inventor： Tsuneo Kogure , Yuji Tsuchiyama , Tadashi Amano , Hideaki Takahashi , Katsuji Sekita , Ichio Akami
IPC: B21D5/02
CPC classification number: B21D5/0272
Abstract: A vertical, hydraulic bending press has a ram which is connected with the hydraulic cylinder so that an even and uniform sectional modulus is applied over the full length of the ram to decrease stress concentration of the ram during bending of the workpiece. The press frame includes means for guiding the ram. Additionally, a load detection device is provided on either side of the ram so that the ram may be stopped when misloading of the ram is detected.
Abstract translation: 垂直液压弯曲压力机具有与液压缸连接的冲头，使得在冲头的全长上施加均匀且均匀的截面模数，以减少冲头在工件弯曲期间的应力集中。 压框包括用于引导压头的装置。 此外，负载检测装置设置在压头的任一侧，使得当检测到压头的错误加载时，压头可能停止。
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公开(公告)号：US4449389A
公开(公告)日：1984-05-22
申请号：US384662
申请日：1982-06-03
Applicant: Pierre Cros
Inventor： Pierre Cros
CPC classification number: B21D5/0272 , Y10T409/309744
Abstract: This device for bending the tool holder of a folding press comprises structure for controlling the deformation of the wedge secured at either end, in the form of a hollow screw engaged in a socket rigid with the tool holder so that it can accomplish movements of translation within this socket, a member for fastening the screw to the wedge, a sprocket mounted coaxially to the screw on the screw-threaded shank thereof for causing the translation of the screw in the socket, and a single driving system for controlling the rotation of the set of sprockets acting at different thrust points disposed at spaced intervals along the wedge, this single wedge having a relatively great length and being therefore easily deformable under the control of the single control system.
Abstract translation: 用于弯曲折叠式压力机的工具架的该装置包括用于控制固定在两端的楔形变形的结构，其形式为与工具架刚性连接的插座中的中空螺钉的形式，使得其能够实现 该插座，用于将螺钉紧固到楔块的构件，与螺丝杆上的螺钉同轴地安装的链轮，用于使螺钉在插座中的平移，以及用于控制组件的旋转的单个驱动系统 的链轮作用在沿着楔形件间隔设置的不同推力点处，该单个楔形件具有相对较大的长度，因此在单一控制系统的控制下容易变形。
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公开(公告)号：US3965721A
公开(公告)日：1976-06-29
申请号：US552193
申请日：1975-02-24
Applicant: Gerald V. Roch
Inventor： Gerald V. Roch
CPC classification number: B21D5/0272 , B21D37/04 , B21D5/02
Abstract: A die holder frame receivable in the die plate or bed of a press brake has a die holder bar mounted thereto supported on a plurality of adjustable wedges, the forming die itself being mounted in the die holder bar. Wedges are individually adjustable to provide a crown along the length of the die holder bar, and are adjustable as a group to provide various desired heights of the die holder bar.
Abstract translation: 可压接在压制机的模板或床中的模座架具有安装在其上的模座，支撑在多个可调节的楔形件上，成形模本身安装在模座中。 楔形件可单独调节，以沿模具座的长度提供冠部，并且可以作为组来调整，以提供模具座的各种期望的高度。
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公开(公告)号：US3702558A
公开(公告)日：1972-11-14
申请号：US3702558D
申请日：1971-09-09
Applicant: NIAGARA MACHINE & TOOL WORKS
Inventor： SWENSON DONALD G , TRAUTMAN GEORGE H JR
CPC classification number: B30B15/007 , B21D5/01 , B21D5/0272 , B21D37/10
Abstract: Apparatus for eliminating faulty bends in press brakes due to deflection between the ram and bed of a press brake which is greatest at the mid point. A compressible polyurethane member is interposed between the die and bed of the press brake and is of such thickness that it compresses to a degree approximately one order of magnitude greater than the total deflection of the bed and ram at the mid point. The polyurethane member is of substantially the same length and in registry with the bend line of the workpiece. Means are also provided for readily lifting the die member to provide polyurethane inserts of a total length to match the bend line of the workpiece.
Abstract translation: 用于消除由于在中点处最大的压力制动器的压头和床之间的偏转而引起的压制机中的弯曲弯曲的装置。 可压缩的聚氨酯部件被夹在压制机的模具和床之间，并且具有如此厚度，其压缩比在中点处的床和冲头的总偏转大约一个数量级的程度。 聚氨酯部件具有基本上相同的长度并且与工件的弯曲线对准。 还提供了用于容易地抬起模具构件以提供总长度以与工件的弯曲线匹配的聚氨酯嵌件的装置。
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公开(公告)号：US3550425A
公开(公告)日：1970-12-29
申请号：US3550425D
申请日：1968-07-24
Applicant: PROMECAN SISSON LEHMANN
Inventor： CAILLOUX PAUL
CPC classification number: B23D15/14 , B21D5/0272 , B30B15/245 , B30B15/281
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