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公开(公告)号：US3147792A
公开(公告)日：1964-09-08
申请号：US14030061
申请日：1961-09-25
申请人： HAUTAU CHARLES F
发明人： HAUTAU CHARLES F
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公开(公告)号：US20070017269A1
公开(公告)日：2007-01-25
申请号：US10570363
申请日：2004-02-27
申请人： Eiji Izumi , Katsunori Noguchi
发明人： Eiji Izumi , Katsunori Noguchi
IPC分类号： B21D9/05
摘要： In the case of bending an outer pipe, a pressure die provided just in front of a bending section is provided with a groove, wherein the shape of the groove on the side far from the bending section is semi-circular and of which the diameter corresponds to that of the outer pipe before bending, while the shape of the groove on the side near the bending section is tapered semi-elliptically. With this, the cross-sectional shape of the outer pipe is caused to change into a substantially elliptical shape in which the outside of the section to be bent is tapered. The cross-sectional shape becomes substantially circular when bending is completed.
摘要翻译： 在弯曲外管的情况下，刚好设置在弯曲部前方的压模设置有槽，其中，在远离弯曲部的一侧的槽的形状为半圆形，并且其直径对应于 与弯曲前的外管的形状相同，而在弯曲部附近的一侧的槽的形状为半椭圆形的锥形。 由此，使外管的截面形状变为大致椭圆形状，其中待弯曲部分的外侧是锥形的。 当弯曲完成时，横截面形状基本上是圆形的。
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公开(公告)号：US07032422B2
公开(公告)日：2006-04-25
申请号：US10388222
申请日：2003-03-14
申请人： Yasuji Hatano
发明人： Yasuji Hatano
CPC分类号： B21D9/07
摘要： A pipe bending processing apparatus includes a drawing and bending section for pressingly contacting a drawing and bending mold, a clamp mold with one end of a pipe P and performing drawing and bending processing, compression bending section for pressingly contacting a chuck with the other end of the pipe and performing compression bending processing, side bending section for pressingly contacting a wiper, and a side bending mold with the side of the pipe and performing side bending processing. The side bending mold provides a stopper 8 which advances and retracts from a pipe pressingly contact surface and engages with the other end of the pipe.
摘要翻译： 管弯曲加工装置具有：拉伸弯曲模具用的拉伸弯曲部分，具有管子P的一端的夹持模具，并进行拉伸和弯曲加工;压缩弯曲部分，用于将卡盘与卡盘的另一端压接; 管和执行压缩弯曲加工，用于压紧接触擦拭器的侧面弯曲部分和与管子侧面的侧面弯曲模具进行侧面弯曲加工。 侧面弯曲模具提供止动件8，其从管道紧密接触表面前进和后退，并与管道的另一端接合。
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公开(公告)号：US5036692A
公开(公告)日：1991-08-06
申请号：US598179
申请日：1990-10-15
申请人： Shizuka Tasaki , Masaaki Tarui
发明人： Shizuka Tasaki , Masaaki Tarui
摘要： A method and an apparatus for bending pipes by clamping one end of the pipe between a formed roll and a rotary base and by turning the rotary base so that the pipe may be bent along the outer periphery of the formed roll. A mandrel supported by a mandrel bar is arranged inside the pipe at a position corresponding to a position slightly behind where the pipe is clamped between the formed roll and the rotary base. The rear end of the mandrel bar is held in place by a pressurizing device so that the mandrel can be held fixed at said predetermined position inside the pipe. At the same time, a vibrating device attached to the mandrel bar causes the mandrel to continuously reciprocate in the axial direction of said mandrel bar, whereby flattening of the pipe which occurs when the pipe is bent along the outer periphery of the formed roll can be corrected by the reciprocation of the mandrel. As a result, the radius of curvature R of the pipe can be made smaller than R=3D, where D is the diameter of the pipe.
摘要翻译： 一种用于通过将管道的一端夹持在成形辊和旋转底座之间并通过转动旋转底座使得管可沿着成形辊的外周弯曲来弯曲管道的方法和装置。 由芯棒支撑的心轴配置在管道内部的位置，该位置对应于管道夹在形成的辊和旋转底座之间稍稍后方的位置。 芯棒的后端通过加压装置保持就位，使得心轴可以保持固定在管内的所述预定位置。 同时，安装在芯棒上的振动装置使心轴沿着所述芯棒的轴向连续地往复运动，由此当管沿成形辊的外周弯曲时发生的管的扁平化可以是 通过心轴的往复运动校正。 结果，管的曲率半径R可以小于R = 3D，其中D是管的直径。
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公开(公告)号：US3650136A
公开(公告)日：1972-03-21
申请号：US3650136D
申请日：1969-10-10
发明人： SINDELAR ERNEST C
摘要： In an apparatus for producing bends in tubing, including a flexible mandrel movable axially into and out of one end of tubing disposed in position on the apparatus for bending. The mandrel has a plurality of mandrel balls universally mounted in a chain whereby the mandrel balls are unsupported against gravity on the end of the mandrel. A cylindrical reload member is disposed adjacent the one end of the positioned tubing for receiving the mandrel and orienting the mandrel balls when outside of the positioned tubing to align the mandrel balls for insertion into the tubing.
摘要翻译： 在用于在管道中产生弯曲的装置中，包括可轴向移入和移出设置在用于弯曲的装置上的适当位置的管道的一端的柔性心轴。 心轴具有通常安装在链条中的多个心轴球，由此心轴球不支撑在心轴的端部上的重力。 圆柱形重新加载构件邻近定位的管的一端设置，用于容纳心轴并在定位的管的外部定向心轴球，以对准心轴球以插入管中。
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公开(公告)号：US11969779B2
公开(公告)日：2024-04-30
申请号：US17590927
申请日：2022-02-02
发明人： Shohei Tamura , Hidehiro Arita
CPC分类号： B21D9/07 , F16L43/001 , B21D9/05
摘要： A mandrel 10 for producing a thin-walled bent tube having a bending portion with high strength and a small radius of curvature by rotary draw bending without either cracks in an outside of bend or wrinkles and buckling in an inside of bend occurring includes a shank 14, a connection mechanism 15 and a mandrel ball 16. In a cross-section orthogonal to an axial direction of the mandrel ball 16 at a central position in the axial direction of the mandrel ball 16, the mandrel ball 16 has a first position 19 and a second position 20 at which a first straight line m that passes through a mandrel ball center 17 meets an outer periphery 21 of the mandrel ball. Further, a ratio (L1/L2) between a dimension L1 from the mandrel ball center 17 to the first position 19 and a dimension L2 from the mandrel ball center 17 to the second position 20 is in a range of 0.915 to 0.976.
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公开(公告)号：US20050016239A1
公开(公告)日：2005-01-27
申请号：US10618245
申请日：2003-07-11
申请人： Frank Schmauder , Winfried Richter
发明人： Frank Schmauder , Winfried Richter
摘要： A pipe bending machine (1) includes a bending tool (3), a pipe feed unit (9) and a mandrel retractor (19). A pipe holder (8) of the pipe feed unit (9) and a mandrel bar support (24) of the mandrel retractor (19) are guided in the longitudinal pipe direction (12) by a common linear guide system (16) on the machine base. Alternatively or in addition thereto the pipe holder (8) and the mandrel bar support (24) can be moved in the longitudinal pipe direction (12) by a common drive system (15) on the machine base.
摘要翻译： 管道弯曲机（1）包括弯曲工具（3），管道进给单元（9）和心轴牵开器（19）。 管道供给单元（9）的管座（8）和心轴牵开器（19）的芯棒支撑件（24）通过公共线性引导系统（16）在纵向管道方向（12）上被引导 机基。 或者或另外，管保持器（8）和芯棒支撑件（24）可以通过机器基座上的公共驱动系统（15）沿纵向管道方向（12）移动。
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公开(公告)号：US20040011106A1
公开(公告)日：2004-01-22
申请号：US10388222
申请日：2003-03-14
发明人： Yasuji Hatano
IPC分类号： B21D009/05
CPC分类号： B21D9/07
摘要： A pipe bending processing apparatus includes a drawing and bending section for pressingly contacting a drawing and bending mold, a clamp mold with one end of a pipe P and performing drawing and bending processing, compression bending section for pressingly contacting a chuck with the other end of the pipe and performing compression bending processing, side bending section for pressingly contacting a wiper, and a side bending mold with the side of the pipe and performing side bending processing. The side bending mold provides a stopper 8 which advances and retracts from a pipe pressingly contact surface and engages with the other end of the pipe.
摘要翻译： 管弯曲加工装置具有：拉伸弯曲模具用的拉伸弯曲部分，具有管子P的一端的夹持模具，并进行拉伸和弯曲加工;压缩弯曲部分，用于将卡盘与卡盘的另一端压接; 管和执行压缩弯曲加工，用于压紧接触擦拭器的侧面弯曲部分和与管子侧面的侧面弯曲模具进行侧面弯曲加工。 侧面弯曲模具提供止动件8，其从管道紧密接触表面前进和后退，并与管道的另一端接合。
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公开(公告)号：US07082798B2
公开(公告)日：2006-08-01
申请号：US10618245
申请日：2003-07-11
申请人： Frank Schmauder , Winfried Richter
发明人： Frank Schmauder , Winfried Richter
IPC分类号： B21D9/05
摘要： A pipe bending machine (1) includes a bending tool (3), a pipe feed unit (9) and a mandrel retractor (19). A pipe holder (8) of the pipe feed unit (9) and a mandrel bar support (24) of the mandrel retractor (19) are guided in the longitudinal pipe direction (12) by a common linear guide system (16) on the machine base. Alternatively or in addition thereto the pipe holder (8) and the mandrel bar support (24) can be moved in the longitudinal pipe direction (12) by a common drive system (15) on the machine base.
摘要翻译： 管道弯曲机（1）包括弯曲工具（3），管道进给单元（9）和心轴牵开器（19）。 管道供给单元（9）的管座（8）和心轴牵开器（19）的芯棒支撑件（24）通过公共线性引导系统（16）在纵向管道方向（12）上被引导 机基。 或者或另外，管保持器（8）和芯棒支撑件（24）可以通过机器基座上的公共驱动系统（15）沿纵向管道方向（12）移动。
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