The invention relates to a bending device (2) for bending a rod-like or tubular workpiece (4), comprising a bending machine (6), which has a bending head (8), which is designed for bending the workpiece (4) in a forming process, and a control means (24), which controls the operation of the bending machine (6), a robot (10), which comprises a multi-joint arm (11) which can be adjusted by motors, having a gripper end (12), which is designed for gripping and holding the workpiece (4), and a control unit (22), which is designed to control the operation of the robot (10), wherein the control means (24) is designed to control the bending machine (6) and the robot (10) during the bending process. The control unit (22) of the robot (10) is switched, at least during the bending process, to a slave mode in which it receives control commands from the control means (24) of the bending machine (6), and the control means (24) of the bending machine (6), during the bending process, continuously issues setting specifications for the motor-adjustable multi-joint arm (11) and the gripper end (12) to the control unit (22) of the robot (10) which has been switched to slave mode and thereby controls the robot (10) to introduce the workpiece (4) into the bending head (8), to stabilize the workpiece during the forming process and to remove the workpiece from the bending head (8) after the forming process.

The invention relates to a bending device (2) for bending a rod-like or tubular workpiece (4), comprising a bending machine (6), which has a bending head (8), which is designed for bending the workpiece (4) in a forming process, and a control means (24), which controls the operation of the bending machine (6), a robot (10), which comprises a multi-joint arm (11) which can be adjusted by motors, having a gripper end (12), which is designed for gripping and holding the workpiece (4), and a control unit (22), which is designed to control the operation of the robot (10), wherein the control means (24) is designed to control the bending machine (6) and the robot (10) during the bending process. The control unit (22) of the robot (10) is switched, at least during the bending process, to a slave mode in which it receives control commands from the control means (24) of the bending machine (6), and the control means (24) of the bending machine (6), during the bending process, continuously issues setting specifications for the motor-adjustable multi-joint arm (11) and the gripper end (12) to the control unit (22) of the robot (10) which has been switched to slave mode and thereby controls the robot (10) to introduce the workpiece (4) into the bending head (8), to stabilize the workpiece during the forming process and to remove the workpiece from the bending head (8) after the forming process.

A die assembly having a bending die and a clamp die. The bending die comprises one or more movable plates and a wedge plate. The bending die includes a channel formed in one or more of the plates configured to receive a pipe or other workpiece to be formed. The movable plates are movable between a first position wherein each plate is spaced from the adjacent plate a predetermined distance and a second position wherein each plate is compressed so there is less distance between the plates. Movement of the wedge plate from the retracted position to the engaged position causes the movable plates to move from the first position to the second position. Compression of the movable plates correspondingly reduces the width of the channel to help grasp any workpiece inserted therein.

Tube bending machines configured to bend a tube at a target bend location. The tube bending machines include a frame, a bending die assembly, and an alignment stem. The bending die assembly is supported on the frame and configured to bend the tube. The bending die assembly includes a bending die, a wheel frame, and a clamp. The wheel frame is coaxially mounted to the bending die. The clamp is configured to secure the tube to the wheel frame. The bending die, the wheel frame, and the clamp cooperate to define an actual bend location where the tube will be bent by the bending die assembly. The alignment system is operatively supported on the frame and configured to align the target bend location with the actual bend location.

A NC machine for stretch bending and monitoring method for clamping force of round clamp thereof is invented, which includes a round head clamp, a hydraulic system and a clamping force monitoring device. The round head clamp includes a housing, an internal module arranged in the housing and a positioning member for positioning the internal module in the housing. The hydraulic system includes a hydraulic rod and a hydraulic ram for pushing the hydraulic rod. The clamping force monitoring device includes a sensor and a data processing module. The present invention is suitable for the workpiece of different shapes and sizes. In this invention, the clamping force can be adjusted in real time when it needs to be changed, and this not only can avoid the problems of excessive energy consumption, excessive clamping marks and damage of the workpiece, but also save energy and protect the workpiece.

The invention relates to a method for producing a rolled edge from a cylindrical edge portion (11) of a pipe. In the method, a starting zone (14) of the edge portion (11) is rolled by a forcibly controlled tool (30). A flanging die (21) then advances into the rolled edge portion (11) and flanges the rolled edge portion into a roll (12). The method according to the invention is characterized in that the starting zone (14) of the edge portion (11) is folded over by the tool (30), which comprises a folding die (37) and counterholder (34), at an angle (α) in the range from 75-105° from the axial direction (45) into a substantially radially peripheral flange (41). The invention further relates to elements, in particular in the forme of an aerosol dome, having such rolled edges.

The invention relates to a method for producing a rolled edge from a cylindrical edge portion (11) of a pipe. In the method, a starting zone (14) of the edge portion (11) is rolled by a forcibly controlled tool (30). A flanging die (21) then advances into the rolled edge portion (11) and flanges the rolled edge portion into a roll (12). The method according to the invention is characterized in that the starting zone (14) of the edge portion (11) is folded over by the tool (30), which comprises a folding die (37) and counterholder (34), at an angle (α) in the range from 75-105° from the axial direction (45) into a substantially radially peripheral flange (41). The invention further relates to elements, in particular in the forme of an aerosol dome, having such rolled edges.

A bending machine for elongated workpieces, comprising a bending tool with a bending head having a bending disc with a bending groove and two slide rails, each having a molding groove and which can be placed laterally against opposing sides of the workpiece. Each slide rail is secured to a support part and laterally supports the workpiece from where the workpiece is fed into the bending groove to a point in front of the bending groove when the slide rail is resting against the workpiece. Each support part is adjustable between a starting position, in which the slide rail does not rest against the workpiece, and a final position, in which the slide rail contacts the workpiece. Upon contacting the workpiece, the other slide rail assumes its starting position. The support parts are attached to a two-arm lever, and a slide piece rests against the workpiece in each lever position.

A clampable pipe bender is provided having a pivotable base plate coupled to a clamp. Atop the pivotable base plate is a pipe bending assembly with a pivotable holding clamp. The pivotable holding clamp is locked in place by way of a pull pin. The pipe bending assembly is comprised of at least one but preferably a plurality of channels into any of which a pipe can be inserted for bending purpose.

A die assembly having a bending die and a clamp die. The bending die comprises one or more movable plates and a wedge plate. The bending die includes a channel formed in one or more of the plates configured to receive a pipe or other workpiece to be formed. The movable plates are movable between a first position wherein each plate is spaced from the adjacent plate a predetermined distance and a second position wherein each plate is compressed so there is less distance between the plates. Movement of the wedge plate from the retracted position to the engaged position causes the movable plates to move from the first position to the second position. Compression of the movable plates correspondingly reduces the width of the channel to help grasp any workpiece inserted therein.