Abstract: A pipe bending machine with bending mandrel having a load bearing structure which is particularly resistant to working stresses, comprises an extractor (2) which is fixed in a rear portion of the pipe bending machine, and mandrel rod (13) which extends with its longitudinal axis (g), from the extractor beyond a front portion of the machine, where a bending head (7) which is provided with a die (8) stresses a pipe (T) to be bent, which is inserted in a mandrel (12), by a traction resultant force that is transmitted along the mandrel rod (13) to the extractor (2) that counteracts with a resultant restraining reaction. The pipe bending machine comprises a load bearing structure (1) having a profile such that it contains inside the longitudinal axis (g) of the mandrel rod (13), in such a way that the load bearing structure (1) is subjected mainly to compression stresses.

Abstract: A bending brake includes a rotating carrier that is rotatable about a rotation axis. The carrier has first and second upper jaws connected thereto at different angular locations about the rotation axis. A locking mechanism for preventing rotation of the carrier during operation of the bending brake includes an endplate forming a pocket, the endplate disposed adjacent to a distal end of the carrier. A latch having a trigger portion is pivotally connected to the endplate and located within the pocket such that the trigger portion protrudes from the pocket. A toothed cam wheel rotating with the carrier has at least one tooth formed thereon that engages the trigger portion of the latch to prevent rotation of the carrier in one direction at preselected angular positions corresponding to the first and second upper jaws.

Abstract: A bending brake assembly for manually bending pieces of sheet metal material including a base supporting a plurality of c-shaped members presenting opposing clamping surfaces for receiving the sheet metal material. An extension extends away from the clamping surfaces with a socket connection rotatably supporting a bending member on the base for bending the sheet metal material disposed between the clamping surfaces. The socket connection includes a male portion and a female portion in sliding engagement with one another as the bending member moves between a pre-bending position, a first operating position, and a second operating position. A finger extends from the male portion and defines a gap between the finger and the extension when in the pre-bending position with the finger maintaining the gap as the finger moves from the pre-bending position to the first operating position and the finger engaging the extension when in the second operating position.

Abstract: The invention relates to a method and a bending press for bending the boundary edge of a planar sheet for shaping into an open seam tube, with an upper tool shaped to correspond to the bend radius to be achieved and an opposed lower tool which may be displaced vertically, between which the boundary edges of the sheet which is clamped in place in the press frame may be bent into the desired boundary contour. The lower tool is provided with a straight working surface and mounted to pivot about a rotational axis whereby the pivot range is at least so large that a permanent planar contact between the working surface of the lower tool and the bottom face of the boundary edge is possible during the bending.

Abstract: A method for making a razor blade having a bent portion is disclosed. The method includes: providing an elongated strip of stainless steel that can be 0.076 mm thick; hardening the strip; providing a cutting edge along an edge of the strip and providing coating(s) on the cutting edge. The stainless steel has a carbon content preferably between 0.45% and 0.55% by weight. The strip is separated lengthwise into discrete razor blades. The bent portion of the razor blade is then formed using a swivel bending process. When the razor blade is bent to define an included angle of 90 degrees between planar regions adjacent the bent portion and an inner surface having a radius about 0.3-0.35 mm, the outer surface of the bent portion is free from macro-cracks.

Abstract: A system for folding a ribbon stock, the system including: a transferring unit; a guide member having a passage for guiding the ribbon stock, the passage defining a longitudinal axis; a folding means supported to revolve and move in a direction substantially transverse to the longitudinal axis for applying a force against the ribbon stock passing through the guide member; a driving means; a supporting frame; a fixing body having a predetermined length and a guide entrance operatively connected with the guide member, wherein ends of the fixing body are rotatably fixed to the supporting frame, the fixing body having a guide slot formed therein for insertably receiving the folding means; and a pair of rotary bodies rotatably connected to the ends of the fixing body for revolving the folding means, the pair of rotary bodies configured to insertably receive the folding means.

Abstract: A bending brake assembly for manually bending pieces of sheet metal material including a base supporting a plurality of c-shaped members presenting opposing clamping surfaces for receiving the sheet metal material. An extension extends away from the clamping surfaces with a socket connection rotatably supporting a bending member on the base for bending the sheet metal material disposed between the clamping surfaces. The socket connection includes a mate portion and a female portion in sliding engagement with one another as the bending member moves between a pre-bending position, a first operating position, and a second operating position. A finger extends from the male portion and defines a gap between the finger and the extension when in the pre-bending position with the finger maintaining the gap as the finger moves from the pre-bending position to the first operating position and the finger engaging the extension when in the second operating position.

Abstract: A sheet metal bending brake having a frame with a sheet metal support surface. A clamping jaw is movable relative to the frame support surface to clamp the sheet metal between the clamping jaw and the frame. The clamping jaw has a linear front edge. An elongated bending arm is pivotally mounted to the frame by an elongated flexible strap having spaced apart edges. One edge of the strap is secured to the bending arm while the other edge of the strap is secured to the frame such that the bending arm extends parallel to and closely adjacent the clamping jaw front edge.

Abstract: An indexer is used on or in combination with a sheet bending brake to cut or bend a piece of sheet metal at a predetermined location without having to make pre-measurements and marks. The indexer comprises a scale and a rotable shaft having a handle. A first bending arm with a gauge and opposed second and third bending arms are connected to the shaft. Second and third arms each have a stop that positions the sheet metal to make a cut or bend at the predetermined location. An example of a method of using the indexer is also discussed.

Abstract: The present invention relates to a press die set for forming a flange that bends an edge of a part, such as a door panel and a hood panel, at a right angle in a press-forming direction and bends an edge adjacent to the edge at a negative angle, and a flange forming method. The press die set for forming a flange according to the present invention can accomplish the flange formation described above in one step, has a simple structure, and is easy to maintain.

Abstract: A device for machining the flange part of a wheel arch, wherein a machining mechanism includes, as general-purpose drive parts, first to third cylinders, and the work bending mold for bending the flange part of the wheel arch, work receiving mold, and work guide of the machining mechanism are replaceable with those of the other types. When a dedicated mold is replaced according to the shape of a work, the entire part of the machining mechanism must not be replaced, but merely the work bending mold, work receiving mold and work guide may be replaced with those of the other types.

Abstract: Vise pliers with duck bill jaws and a brake attached thereto, having utility as a vise pliers tool and/or as a handheld sheet metal brake.

Abstract: A sheet metal bending brake having a frame with a sheet metal support surface. A clamping jaw is movable relative to the frame support surface to clamp the sheet metal between the clamping jaw and the frame. The clamping jaw has a linear front edge. An elongated bending arm is pivotally mounted to the frame by an elongated flexible strap having spaced apart edges. One edge of the strap is secured to the bending arm while the other edge of the strap is secured to the frame such that the bending arm extends parallel to and closely adjacent the clamping jaw front edge.

Abstract: A hemming machine is provided with a frame, a hemming tool support structure and a swinging drive structure. The hemming tool support structure is rotatably coupled to the frame to rotate about a center rotation axis. The hemming tool support structure includes a hemming tool disposed at a first location such that the hemming tool moves towards and away from an edge part of a workpiece that is supported on a die upon rotation of the hemming tool support structure. The swinging drive structure transmits a rotational driving force to the hemming tool support structure via a releasable connection located on a side of the center rotation axis that is opposite of the hemming tool. The releasable connection is configured to release the swinging drive structure to allow further rotational movement of the hemming tool away from the die.

Abstract: A device and method for bending a metallic strip are described, particularly for manufacturing die cutting blades, wherein the bending tools are capable of being rotated about a common axis and wherein each tool is further capable of being rotated about its own axis of rotation which is different from the others.

Abstract: A bending brake includes a rotating carrier that is rotatable about a rotation axis. The carrier has first and second upper jaws connected thereto at different angular locations about the rotation axis. A locking mechanism for preventing rotation of the carrier during operation of the bending brake includes an endplate forming a pocket, the endplate disposed adjacent to a distal end of the carrier. A latch having a trigger portion is pivotally connected to the endplate and located within the pocket such that the trigger portion protrudes from the pocket. A toothed cam wheel rotating with the carrier has at least one tooth formed thereon that engages the trigger portion of the latch to prevent rotation of the carrier in one direction at preselected angular positions corresponding to the first and second upper jaws.

Abstract: A sheet metal bending brake having a frame with a sheet metal support surface. A clamping jaw is movable relative to the frame support surface to clamp the sheet metal between the clamping jaw and the frame. The clamping jaw has a linear front edge. An elongated bending arm is pivotally mounted to the frame by an elongated flexible strap having spaced apart edges. One edge of the strap is secured to the bending arm while the other edge of the strap is secured to the frame such that the bending arm extends parallel to and closely adjacent the clamping jaw front edge.

Abstract: The present invention provides bending apparatuses and methods that can form lithographic plates having different radii, such as for different printing press configurations, without the need to remove and replace the anvils on a bending apparatus. More particularly, the present invention provides bending apparatuses having integrated changeable anvils useable for forming bends having different radii.

Abstract: A gutter cap forming tool is provided for use in a method of forming a gutter cap from a sheet stock blank. A flange of the gutter cap is initially formed by a bending brake or a flange bender. A roll forming operation is performed to form a reversely-turned arcuate bend in the gutter cap. The gutter cap is installed with either an extruded bracket or a molded bracket that secures the gutter cap to a building and a gutter.

Abstract: A guide mechanism for use with a sheet bending brake has a clamping member having a lower leg extending therefrom, a pivot arm and a guide mechanism. The pivoting arm being pivotally supported by and extending from the clamping member to define a clamping area with the lower leg. The guide mechanism reacts between the clamping member and the pivoting arm for moving the pivoting arm between an open position and a closed position.

Abstract: A hemming system and method is taught. The system and method employs tool platen assemblies comprising an anvil and one or more beam assemblies which are configured on the tool platen assembly and which tool platen assembly can be removed and replaced in the hemming system without the need for reconfiguration of the tool platen components. This allows for relatively rapid change over for the hemming system to hem different components. Further, the lift table of the hemming system includes a lift plate which moves the anvil through a predefined constant vertical stroke, but the start and end positions of that constant stroke length can be changed by inserting and removing a set of spacers from the anvil lift path. When the spacers are in the lift path, the lowered position and the raised position of the anvil are both higher than the corresponding lowered position and raised position when the spacers are removed from the lift path.

Abstract: A method and apparatus for creating joints in sheet metal which includes a stationary member, a slidable center member and slidable rear member with surfaces between the members including z-shaped male and female dies and flat surfaces. The first and second slidable members are compressed to cause the male and females z-shaped die to create a uniformly crimped sheet metal edge, which is further compressed between the flat edges of the stationary and center slidable members to form a joint.

Abstract: A method and apparatus for folding of sheet materials for forming a three-dimensional structure from a substantially two-dimensional sheet material includes a restraint assembly for restraining a work piece from movement in one direction, a low flange assembly movably mounted on the frame for biasing the work piece against the restraint assembly and effecting folding along the low-flange fold line, a high flange assembly movably mounted on the frame to effect folding along the high-flange fold line, and a control assembly for sequentially operating the low flange assembly and the high flange assembly. A method of using the method and apparatus for folding of sheet materials, and the structure created thereby, is also disclosed.

Abstract: A folding brake includes a frame having a pair of vertically disposed and spaced side members and a lower clamp member rigidly attached to each side member and disposed in a horizontal plane. An upper clamp member is pivotally positioned in relationship to the lower clamp member for selectively clamping a workpiece positioned thereon. A first drive member generates a clamping force and selectively moves the upper clamp member. A pivotally mounted bend rail is engageable with a portion of such workpiece protruding beyond a front edge of the lower clamp member. A second drive member generates a bending force and selectively pivots the bend rail in a first direction to apply the bending force to such workpiece and in a second direction to disengage the workpiece. A controller is provided for operating the first and second drive members.

Abstract: A bending brake assembly for manually bending pieces of sheet metal material including a base supporting a plurality of c-shaped members presenting opposing clamping surfaces for receiving the sheet metal material. An extension extends away from the clamping surfaces with a socket connection rotatably supporting a bending member on the base for bending the sheet metal material disposed between the clamping surfaces. The socket connection includes a mate portion and a female portion in sliding engagement with one another as the bending member moves between a pre-bending position, a first operating position, and a second operating position. A finger extends from the male portion and defines a gap between the finger and the extension when in the pre-bending position with the finger maintaining the gap as the finger moves from the pre-bending position to the first operating position and the finger engaging the extension when in the second operating position.

Abstract: A detachable support for a workpiece, and in particular a bending brake, includes a workpiece support and a clamp pivotally attached to the workpiece support. The clamp further comprises a lever that pivots about a pivot axis relative to the workpiece support between an unclamped position and a clamped position, the clamp being biased toward the clamped position. In operation, a user pivots the clamp into an unclamped position, places the detachable support structure into positional engagement with the workpiece, and then releases the clamp into clamping engagement with the workpiece.

Abstract: Plant (10) for bending metallic flat elements (11) including a bending machine (13) provided with a support plane (21) on which the metallic flat element (11) to be bent is positioned, a bending group (19) which bends, upwardly or downwards, a section of the metallic flat element (11), and a sucker feeding group (22) associated with the support plane (21) for selectively feeding the metallic flat element (11) to the bending group (19). The feeding group includes one or more sucker organs (22) aligned in a direction substantially transverse to the metallic flat element (11) to be bent and placed, in the rest position, below the support plane (21), to lift the metallic flat element (11) of a given height (D) from the edge of the support plane (21), after the bending has been carried out.

Abstract: A bending brake for sheet material includes frames; an upper jaw and a lower jaw that cooperate to hold the sheet material a bending surface pivotally connected to the lower jaw to bend the sheet material against an anvil of the upper jaw; an interlocking unit connected to the frame and having a cam surface which has having a locking position; and an elongated pipe assembly for rotation by a user. The elongated body bears against the cam surface and rests in the locking position to clamp the sheet material with reduced freedom of play.

Abstract: In order to improve a material-working machine for flat material parts, comprising a machine frame, processing tools held on the machine frame, a supporting unit, on which the flat material part can be placed for feeding to the processing tools in at least one main feed direction, and a controller for controlling a processing sequence using the processing tools, in such a way that it can be operated in an ergonomically favorable manner, it is proposed that the supporting unit extends in the main feed direction from a region toward the tool to a region remote from the tool and that the extent between the region toward the tool and the region remote from the tool is variably adjustable.

Abstract: An indexer is used on or in combination with a sheet bending brake to cut or bend a piece of sheet metal at a predetermined location without having to make pre-measurements and marks. The indexer comprises a scale and a rotable shaft having a handle. A first bending arm with a gauge and opposed second and third bending arms are connected to the shaft. Second and third arms each have a stop that positions the sheet metal to make a cut or bend at the predetermined location. An example of a method of using the indexer is also discussed.

Abstract: A low-inertia flat surface tilting device including a selectably positionable flat surface element assembly defining a flat surface element having a flat surface and a pivot location portion, the pivot location portion being generally centered with respect to the flat surface, a pivot support element pivotably engaging the pivot location portion, an electromagnet, fixed with respect to the pivot support element and arranged for application of magnetic force in a direction generally perpendicular to the flat surface thereby to pivot the flat surface element about the pivot support element, a sensor for sensing the position of the flat surface element and feedback circuitry operative in response to an output of the sensor to govern operation of the electromagnet.

Abstract: A bending tool system is provided for forming a three-dimensional structure from a two-dimensional sheet material which includes a predetermined fold line. The system includes a tool base for receiving and supporting the sheet material in a work plane, a clamp for engaging against the sheet material to secure a portion of the sheet material relative to the tool base, a locator for positioning the sheet material relative to the tool base such that the clamp extends through the clamping aperture, and a bending arm located adjacent the clamp, the bending arm movable from an initial position located below the work plane to an upper position in order to apply an upward force against an unsecured portion of the sheet metal to effect bending of the sheet material about the fold line. A method of using the tool system for bending sheet materials is also described.

Abstract: A straightening tool for straightening an elongate angled member of an angled tissue cutting instrument in which the elongate angled member has a proximal length portion and an initial bend connecting the proximal length portion to a distal length portion extending from the bend to a distal end. The straightening tool comprises a positioning block attached to a handle, an unbending channel in the positioning block configured to effect straightening of the elongate angled member and a guide template corresponding to the unbending channel. The guide template comprises a guide slot having a longitudinal profile corresponding to the longitudinal profile of a forward aspect of the elongate angled member extending from the distal end proximally of the bend.

Abstract: The invention concerns a bending machine comprising a machine frame, and upper bar and a lower bar mounted on the frame and mutually mobile, a bending bar mounted on the frame, a bending bar mounted on the frame and mobile relative to the frame, to the upper bar and to the lower bar, said bending bar being provided with a support and a bending tool pressing on said support via a bending device actuated by a control unit. The invention aims at making the bending adjustment faster and more accurate. Therefor, said bending device is equipped with an adjusting device capable of being used during a bending operation; the adjusting device, which is actuated by the control unit, can be controlled during a bending operation; at least one sensor associated with the control unit enables detection, through the adjusting device of an adjustment performed by the control unit.

Abstract: A guide mechanism for use with a sheet bending brake has a clamping member having a lower leg extending therefrom, a pivot arm and a guide mechanism. The pivoting arm being pivotally supported by and extending from the clamping member to define a clamping area with the lower leg. The guide mechanism reacts between the clamping member and the pivoting arm for moving the pivoting arm between an open position and a closed position.

Abstract: A sheet metal bending brake having a frame with a sheet metal support surface. A clamping jaw is movable relative to the frame support surface to clamp the sheet metal between the clamping jaw and the frame. The clamping jaw has a linear front edge. An elongated bending arm is pivotally mounted to the frame by an elongated flexible strap having spaced apart edges. One edge of the strap is secured to the bending arm while the other edge of the strap is secured to the frame such that the bending arm extends parallel to and closely adjacent the clamping jaw front edge.

Abstract: A notching, shearing, and hemming tool constructed with a table which receives the roofing panel, at least two notching devices (notchers), a pan shear pivotally mounted on the table, and a hemming tool pivotally mounted on the table. To prepare a finished end piece of roofing panel, the roofing panel is placed in a panel alignment section at a first end of the tool. Each of the notching devices is movable, so that the relative position of the two notchers is variable. After notching, the roofing panel is moved to the pan shear, which is set at the proper angle by movement of a lever mechanism connected to the notchers. The roofing panel is sheared along a center line of the notched area. This cut leaves a tongue of the flat pan of the roofing panel exposed on each cut piece. Following the shearing operation, the user is left with two cut panels, each having an exposed tongue section an inch-and-a-half long extending from the pan section.

Abstract: A cutting assembly (20) is removably supported on a sheet bending brake (24) for cutting a work piece (22). The cutting assembly (20) includes a cutter body (32), and a first (42) and a second cutting disk (48), each having an outer periphery defining a primary (44) and a complimentary cutting edge (50) respectively. The first (42) and second cutting disks (48) are rotatably supported by the cutter body (32) and rotate about a first axis (46) and a second axis (52) respectively. An adjustment mechanism (60) interconnects the second cutting disk (48) and the cutter body (32) for axially adjusting the complimentary cutting edge (50) with respect to the primary cutting edge (44) without having to remove the second cutting disk (48) from the cutter body (32). The cutting assembly (20) includes a locking device (82) for preventing movement of the adjustment mechanism (60) relative to the cutter body (32).

Abstract: Bending machine (10) to obtain shaped elements from pre-cut profiles (11), equipped with a drawing assembly (14) which draws the profiles (11), first shearing means (13) arranged downstream of the drawing assembly (14) and bending means (12) arranged downstream of the first shearing means (13). Downstream of the bending means (12) are arranged second shearing means (15) to eliminate the terminal segments of the profiles (11) corresponding to the difference between the linear development of the shaped element to be produced and the length of the pre-cut profiles (11).

Abstract: The invention concerns a bending machine comprising a machine frame, an upper bar equipped with a tool and a lower bar likewise equipped with a tool, the upper bar and the lower bar being mounted mutually mobile on the frame. The machine comprises at least one drive means for moving the tools of the lower and upper bars towards each other, so as to shape a plate-shaped part to be machined located between said tools. The invention aims at providing that the force exerted by the tools of the lower and upper bars should be the highest possible, at the least possible cost.

Abstract: The present invention provides a plate material processing machine with a bending function which enables even a bending piece with two or more bending portions to be bent and which enables materials to be bend so as to have different bending directions, dimensions, angles, or the like using the same tools. An upper tool 21 and a lower tool 22 are provided which fix a plate material W by sandwiching it between themselves. An upper tool-side bending tool 23 and a lower tool-side bending tool 24 are provided on sides of the upper tool 21 and lower tool 22, respectively, so as to elevate and lower freely. The upper tool-side bending tool 23 and the lower tool-side bending tool 24 perform elevating and lowering operations relative to the upper tool 21 and the lower tool 22 to bend a plate material piece Wa of a plate material W sandwiched between the upper tool 21 and the lower tool 22.

Abstract: The subject invention presents a sheet bending brake assembly and a measuring device for the sheet bending brake assembly. The assembly includes a support. First and second clamping members are mounted on the support for movement between open and closed positions. The clamping members have respective clamping surfaces that extend in a parallel and opposing relationship to each other in the closed position to clamp a sheet of material between the surfaces. The measuring device is for measuring the sheet of material relative to the clamping members. The measuring device includes a base and an elongated arm pivotally connected to the base at a pivot. The elongated arm extends from the pivot to a distal end for pivotal movement about the pivot between a retracted position and an extended measuring position for overlying the sheet of material.

Abstract: The apparatus is a support assembly for attaching a heavy tool on the side of a truck and for unfolding it from a storage position into a horizontal work position. At least one foldable support assembly is constructed from two channels, an extension channel pivoting down from within a mounting channel on the side of the truck, using a pivot located near the bottom of the mounting channel and near one end of the extension channel. A tool support pivots around the opposite end of the extension channel to form a support for a horizontal tool, but the entire assembly folds up flush against the truck. The folded size is minimized by each of the parts fitting within the adjacent part. An energy storage device such as a spring is also located within the support assembly and counteracts the weight of the support assembly and the tool to ease folding and unfolding the apparatus. A latch holds the assembly securely folded.

Abstract: A method, a front gauge and a sheet bending brake with a front gauge providing a scale for gauging a workpiece of sheet material, and optionally also for supporting the workpiece and/or squaring or angling the workpiece relative to a bending anvil of the brake. Mounting, either front mounting on a bending member or under-mounting below the brake, connects the scale to the brake, preferably removably and repositionably, such that the scale extends in front of the brake and under the workpiece, thereby enabling simple and efficient one-operator use without interfering with brake operation. The mounting also provides means for removably and repositionably attaching accessories such as a workpiece support and a workpiece rack.

Abstract: A plate-processing device intended for bending and cutting of bending and bendable plate-like objects. A bending and cutting tool is arranged to be moved by actuators. At least two tube sectors, which are arranged within each other and move relative to each other, of which the tube sector that revolves around the axis of revolution has a bending or cutting tool. The mutual movement of the tube sectors is brought about by actuators acting between the tube sectors and expandable by means of pressure of a medium.

Abstract: A sheet metal bending brake having a frame with a planar work supporting surface and a plurality of spaced frame members extending over the work support surface. Each frame member has a throughbore and these throughbores are aligned with each other. A plurality of elongated pivot arms are pivotally secured at one end to the frame for movement toward and away from the work supporting surface. Each pivot arm also includes a generally rectangular opening aligned with the frame member throughbores. A block is longitudinally slidably mounted in each pivot arm opening and this slide block is constrained against movement in a direction perpendicular to the work support surface. Each block furthermore includes a trapezoidal opening with spaced apart and parallel top and bottom surfaces and outwardly flared side surfaces. An elongated shaft extends through and is rotatably mounted to the frame member throughbores and this shaft also extends through the trapezoidal openings in the pivot arms.

Abstract: A mechanical bending device (8) for bending flat workpieces (6) has at least one bending tool assembly (9) which includes at least one tool part that can move by means of a bending tool drive (27). When acted on by the tool part that moves, the workpiece can be bent along a bending line (11). The movable tool part is comprised of a multiplicity of adjacent segments disposed in the direction of the bending line (11), which segments can be selectively connected to the bending tool drive (27) to provide the desired operational length for the bending tool assembly. The machine tool incorporating the mechanical bending device can also include a mechanical cutting device so that workpiece parts can be both bent and machine cut in the same machine tool.

Abstract: The invention concerns a brake (1) comprising at least a platen (2) co-operating with a press (3) for immobilizing a blank section to be bent, the platen (2) being extended by a table (4) hinged to the platen (2) via a hinge. The brake (1) is characterized in that part of the hinge consists of a cage having in transverse section a profile with a cylindrical segment (6B) prolonged by a retaining lip (6C) defining with the segment an opening (6D) of the cage (6A), the cage (6A) being designed to receive by simple sliding the other hinge part, the hinge part having a generally winding conchoidal shape exhibiting in transverse section a profile with a cylindrical segment prolonged by a retaining lip. The invention is useful for bending blanks.

Abstract: A sheet metal bending tool for bending materials, such as flat metal sheets is disclosed. The tool has a restraining base for receiving and cooperatively holding a sheet metal workpiece and the tool has a bending component that is rotatably mounted to the restraining base, the workpiece is held, cooperating with the restraining base component, and the clamp bar for stabilizing the workpiece while the workpiece is held and bent by the rotating action of the bending component. In the preferred embodiment, the workpiece is restrained by a template comprising a pattern of holes drilled, a hole receiving a peg or means of stop, the stops (pegs) constraining the workpiece from movement while being bent act like a jig for measuring and predetermined incumbents. Holes are also drilled in restraining base and in the bending component at spaced intervals along lines that are run parallel to the line defined by the intersection of the bending component and the restraining base.

Abstract: The subject invention provides a sheet bending brake assembly for securing a work piece. The sheet bending brake assembly includes a clamping member having a lower leg extending therefrom and a pivoting arm pivotally supported by and extending from the clamping member. The pivoting arm defines a clamping area with the lower leg. A base supports the clamping members and provides support to the assembly while moving the pivoting arm between the open position and the clamped position. A guide mechanism reacts between the clamping member and the pivoting arm for moving the pivoting arm between the open position and the clamped position. The guide mechanism has a guide slot with a detent positioned within the guide slot between the first and the second ends for positioning the pivoting arm in an intermediate position to allow for precisely aligning the work piece.