Abstract: A variable-diameter full-support mandrel structure with a slider-type cross section for preventing a reverse rotation of a ratchet wheel includes a movable mandrel segment and a straight shank, and the movable mandrel segment and the straight shank are connected through a quick-disconnect universal joint. A rotating shaft of the movable mandrel segment is provided with a connecting rod mounting flange, a ratchet wheel, a reverse ratchet wheel, a bearing, and a limit clamp ring in sequence. An outer ring of the bearing is provided with a pawl mounting frame. The connecting rod mounting flange and the pawl mounting frame are respectively hinged to a long connecting rod and a short connecting rod, and the long connecting rod and the short connecting rod are hinged to slider components in an outer ring. The slider component has a Z-shaped structure composed of two layers of arc blocks.

Abstract: A machine tool apparatus for a press brake, folding press or punch press system includes a tool holder body having a receiving portion configured for selective engagement with a coupling end of a machine tool. The apparatus also includes a magnetic coupling assembly comprising one or more magnetic elements configured to generate a magnetic coupling adapted for the selective engagement of the tool holder body with the coupling end of the machine tool. In some embodiments, the apparatus may further include an actuator configured to manipulate at least one of the magnetic elements to modulate the strength of the magnetic coupling for selective engagement and disengagement of the tool holder body with the coupling end of the machine tool.

Abstract: A die locking device including a press having a top end, a bottom end and a plurality of channels disposed around a perimeter of the press. The device also includes a plurality of actuators, each of the plurality of actuators affixed to a first end of one of a plurality of locking arms that are each at least partially disposed in one of the plurality of channels. The device also includes a plurality of locking clips, each affixed to a second end of each of the plurality of locking arms and each affixed to one of a plurality of hinges. The plurality of hinges is configured to receive and secure a die stack to the top end of the press.

Abstract: Disclosed is a clamping device for clamping a tool, which includes a part receiving the tool, an actuated member and an engaging member to be brought into contact with the tool. The clamping device is further provided with a transmission placed between the actuated member and the engaging member. The actuated member can be pneumatically or electrically driven, and includes for instance a pneumatic jack, an electric motor or a piezoelectric element or an electromagnet. The actuated member can also be hydraulically driven. The transmission can include a wedge-shaped member or a lever. The clamping device can be self-braking.

Abstract: An oil-pressure swaging tool for rebuilding a connecting pipe includes an abutting member abutting against an oil-pressure device, a connector inserted into a connecting pipe, one end of a first axial member passing through the abutting member to connect to one end of the connector, another end of the first axial member connected to the oil-pressure device, a rebuilding member assembled to another end of the connecting pipe, a pressure collar adjacent to one end of the rebuilding member, one end of a second axial member passing through the rebuilding member to connected to the pressure collar, another end of the second axial member connected to another end of the connector. Therefore, when the opening of the connecting pipe is rebuilt by the oil-pressure swaging tool of the present invention, one end of the connecting pipe is not necessary to abut against a wall because of the abutting member.

Abstract: A press mold comprises lower mold (9), upper mold (3), working limiter (6) and rigid storing restrictor (2). The lower mold (9) and the upper mold (3) are coupled each other by guide post (1) having guiding function so that they can move relative to each other. The working limiter (6) and the rigid storing limiter (2) are located between the lower mold (9) and the upper mold (3). The press mold also includes at least one elastic storing limiter provided between the upper mold (3) and the lower mold (9).

Abstract: The invention relates to an exchangeable tool for holding in a receiving structure, the tool comprising: a safety device for preventing the tool from accidentally falling out of the receiving structure, which safety device has a tool releasing position and a tool locking position; energizable actuating means for actuating the safety device; and energizing means for energizing the actuating means, and to a method for exchanging such tool from a receiving structure.

Abstract: Disclosed is a clamping device for clamping a tool, which includes a part receiving the tool, an actuated member and an engaging member to be brought into contact with the tool. The clamping device is further provided with a transmission placed between the actuated member and the engaging member. The actuated member can be pneumatically or electrically driven, and includes for instance a pneumatic jack, an electric motor or a piezoelectric element or an electromagnet. The actuated member can also be hydraulically driven. The transmission can include a wedge-shaped member or a lever. The clamping device can be self-braking.

Abstract: Press brake tool holders suitable for releasing and securing press brake tools. Provided in certain embodiments are a press brake tool holder and a press brake tool, in combination. Methods of using press brake tool holders are also provided. In some embodiments, the tool holder has a mechanism for tool seating, such as a mechanism adapted for moving a tool generally parallel to a pressing axis of the tool holder.

Abstract: Press brake tool holders suitable for holding press brake tools for punching and/or otherwise deforming workpieces, such as sheet metal. Provided in some embodiments is a press brake tool holder. Some embodiments provide the tool holder in combination with a press brake tool. Methods of using press brake tool holders are also provided. In certain embodiments, the tool holder has a tool-seating mechanism adapted for moving a tool parallel to a pressing axis of the tool holder.

Abstract: The invention relates to an exchangeable tool having a tool body with a receiving end for holding the tool in a receiving structure, wherein a connector is arranged in the tool body for providing a substantially non-rotatable connection with a manipulator for manipulating the tool into and out from the receiving structure, to a combination of such tool with a manipulator for manipulating the tool into and out from a receiving structure, and to a method for manipulating such tool into and out from a receiving structure.

Abstract: A system for quickly clamping asymmetric bending tools with either a rear or front orientation using front side and rear side clamping bars on opposite sides of a support body. The clamping system includes front and rear side intermediate bars that are unbalanced as to a clamping screw that passes there so as to hang down adjacent to opposed front and rear sides of the support body. Thus, the intermediate bars on the front side of the support body or the intermediate bars on the rear side of the support body can be independently engaged and swung up by a tool surface on that same side of the support body when the tool is inserted into the clamping system on that same side. The unbalanced intermediate bars that are not engaged by an inserted support surface of the tool remain in the unbalanced state on the opposite side.

Abstract: A die clamp mechanism includes: a plunger that protrudes from a lower side of a carrier when the carrier on which a bolster is mounted is separated from a bed of a press machine and plunges into the lower side of the carrier when the carrier is grounded on the bed; a biasing member that biases the plunger downward: and an engaging member that engages a die with the bolster in accordance with an axial movement of the plunger when the plunger plunges into the lower side of the carrier.

Abstract: The invention provides press brake technology. In more detail, the invention involves a press brake tool holder having a thermally-responsive actuator. In certain embodiments, the actuator comprises a thermally-expandable polymer and/or a shape-memory alloy.

Abstract: Continuous extrusion apparatus includes a rotatable wheel, the rotatable wheel including a circumferential groove. Continuous extrusion apparatus includes a shoe including an arcuate tooling bounding a radially outer portion of the groove provided with an exit aperture in a die body and an abutment displaced in the direction of rotation from the exit aperture. The shoe includes a heater body assembly including an electrical induction heating coil assembly arranged to be energisable to co-act with a magnetisable element to effect electrical induction heating thereof; and an element is provided to thermally induce movement of co-acting members for one of expanding and contracting to adjust clearances between the rotatable wheel and the abutment and the shoe within requisite limits.

Abstract: A press brake tool and tool holder. The tool has a body terminating downwardly in a workpiece-engaging surface and a tang extending upwardly from the body and adapted for reception in a tool holder, the tang having a first wall defining a vertical surface and a second wall on the opposite side of the tang having a recess formed therein having a contact surface. The tool holder has an opening therein for reception of the tool tang, a vertical surface engagable with the vertical surface of the tang, and a clamping pin movable transversely of the opening for clamping the tool in the holder. The pin has a camming surface configured to engage the contact surface of the tang in line contact to exert a force on the tang having vertical and horizontal components, the ratio of the vertical component to the horizontal component desirably changing as the clamping pin clamps against the contact surface of the tang.

Abstract: A pressing apparatus includes a lower die (24) fixed to a lower plate (11), and first and second plate (11), and first and second upper die punches (33 and 34) capable of being lifted and lowered along with an upper plate (12). The first upper die punch (33) supported by a spring (49) is capable of being lifted and lowered relative to the second upper die punch (34). The upper plate (12) is lifted and lowered, while intermittently feeding a band-shaped work (W) one pitch by one pitch from the right to the left along an upper surface of the lower die (24), thereby pressing the work (W) to form grooves in the work (W) continuously. When the groove is formed in the work (W) by pressing the work (W) by the second upper die punch (34), the groove formed at the last time by pressing the work (W) by the second upper die punch (34) is retained and positioned between the first upper die punch (33) and the lower die (24).

Abstract: An upper die supporting section for supporting an upper die is provided to a lower portion of a holder body 7, a pressing section for pressing the upper die against the upper die supporting section is provided to a lower portion of an upper die clamp 11 supported to the holder body 7 in a rocking manner with a vicinity of a center in a vertical direction being as a supporting point. A locking member which freely locks into a drop-proof groove provided to the upper die is provided to a lower portion of the upper die clamp 11, and it is biased towards the upper die supporting section. Clamping force applying means 13 for pressing an upper portion of the upper die clamp 11 so as to apply a clamping force for clamping the upper die using the upper die clamp 11 is provided.

Abstract: Safety tool for supporting and holding an interchangeable utensil, which includes a holding clip, hinged to the utensil support body joined to the beam, the said clip being pushed on one side, while on the other side there are teeth facing the utensil support body, and of which a tooth is used for holding a safety hook and a lower tooth presses against the outer side of a spring for lifting the hook. The safety hook, being positioned between the holding clip and the utensil support body, has a seat on one side, along which the said first tooth of the holding clip is inserted, while on the other side, there is a hooking terminal with a leading plane, that is inserted inside a groove, preferably of the type for utensils with a standard shank.

Abstract: Press brake tool holders suitable for releasing and securing press brake tools in response to applied fluid pressure. One press brake tool holder includes a horizontally elongated body having a cam shaft bore disposed longitudinally therethrough, and receiving a slidably and sealingly mounted cam shaft therein. The cam shaft can have at least one axial camming surface, having a large outer diameter region axially tapered to a small outer diameter region, and in contact with a cam follower pin slidably disposed in a cam follower pin bore transversely disposed through the body. The cam follower pin can bear against a pivotally mounted clamp disposed about the body. In response to applied fluid pressure, the camming surface can slide axially, thereby increasing the effective outer diameter as seen by the cam follower pin, thereby urging the cam follower pin outward and against the upper portion of the pivotally mounted clamp, and closing the lower clamp portion about a press brake tool.

Abstract: Press brake tool holders suitable for releasing and securing press brake tools in response to applied fluid pressure. One press brake tool holder includes a horizontally elongated body having a cam shaft bore disposed longitudinally therethrough, and receiving a slidably and sealingly mounted cam shaft therein. The cam shaft can have at least one axial camming surface, having a large outer diameter region axially tapered to a small outer diameter region, and in contact with a cam follower pin slidably disposed in a cam follower pin bore transversely disposed through the body. The cam follower pin can bear against a pivotally mounted clamp disposed about the body. In response to applied fluid pressure, the camming surface can slide axially, thereby increasing the effective outer diameter as seen by the cam follower pin, thereby urging the cam follower pin outward and against the upper portion of the pivotally mounted clamp, and closing the lower clamp portion about a press brake tool.

Abstract: Safety tool for supporting and holding an interchangeable utensil, which includes a holding clip, hinged to the utensil support body joined to the beam, the said clip being pushed on one side, while on the other side there are teeth facing the utensil support body, and of which a tooth is used for holding a safety hook and a lower tooth presses against the outer side of a spring for lifting the hook. The safety hook, being positioned between the holding clip and the utensil support body, has a seat on one side, along which the said first tooth of the holding clip is inserted, while on the other side, there is a hooking terminal with a leading plane, that is inserted inside a groove, preferably of the type for utensils with a standard shank.

Abstract: A modular tool support element in sheet metal bending brakes which includes an intermediary member fixed to the respective toolplate and having a lower channel for receiving the tool shank provided with a groove along its entire length, support elements for supporting the shank in the channel while leaving it free to slide along the channel, and a clamping element for clamping the shank in the channel, wherein the modular element includes at least one lower channel which has a lateral wall which is a movable jaw rotatable about a fixed shaft rigid with the body of the intermediary member, there being provided a device for causing the jaw to rotate in the tool clamping direction, and movable abutments disposed on said jaw which are able to be positioned in front of or moved away from said rotation-causing device.

Abstract: The quick tool clamping system relates to a cornice brake in which there are rows of punches and dies and modular units consisting of intermediates and clamping jaws for the intermediates and jaws for clamping punches, with the latter being operated by actuators driven by pneumatic cylinders, and is characterized in that: a) in the intermediates and the jaws clamping the intermediates to the cursor of the press there are channels for feeding of the fluid under pressure to the actuator cylinder; b) said channels lead to at least one hole opening onto the opposing surfaces of each pair of intermediates and associated clamping jaw; and c) on at least one of the two opposing surfaces of each pair of intermediates and associated clamping jaw the associated hole opens onto a groove running horizontally in the surface and positioned at the same level as the hole opening onto the opposing surface, and in the circuit for supplying the fluid under pressure to every intermediate a valve is inserted designed to intercept