Abstract: A vertical position of a ram is directly detected by a ram position detector. A first speed arithmetic operating portion determines a first ram moving speed on the basis of a change of the detected position. A second speed arithmetic operating portion determines a second ram moving speed on the basis of a rotational number of a servo motor which is determined by a servo motor rotational number detector. A comparing portion compares the first ram speed with the second ram speed, and when a difference is equal to or more than a predetermined amount, a judging portion judges that an abnormality exists so as to immediately stop the servo motor and stop an operation.

Abstract: A method using high interior pressure to reshape structural section of continuously bounded overall cross-section, whereby the overall cross-section can be provided with extra walls or chambers and a stopper is forced radially against each end of the piece. The object is to reduce wear on the stopper while ensuring that any walls or chambers in addition to its overall crosssection will buckle or bulge only at their ends.

Abstract: A chain lock for high-strength steel chains has two lock parts that are the same and can be joined together in a rotation-symmetry arrangement with one another, in the longitudinal direction. Each lock part has a longitudinal stay having arc segments that follow it at both ends. There are two coupling elements that are configured complementary to one another and are assigned to the two arc segments of each lock part. One of the elements is configured as a locking stay that follows the longitudinal extension of the lock part, and the other element is configured as a stay accommodation. The locking stay of the one lock part engages in the stay accommodation of the other lock part and rests against the complementary coupling surface of the stay accommodation with its coupling surface formed by the face end in the joining direction. The coupling surfaces comprise a coupling surface segment having a defined width, which has no curvature or only an insignificant curvature pointing in the joining direction.

Abstract: A method of forming an elongated metal blank into a structural component having a predetermined outer configuration. The method includes providing a shape imparting cavity or shell section formed from a rigid material which includes an inner surface defining the predetermined shape, placing the metal blank into the cavity or shell section, and forming the metal blank into the component by heating axial portions of the metal blank and forcing a fluid at a high pressure into the metal blank until the metal blank at least partially conforms to at least a portion of the inner surface of the cavity or shell section to form the structural component.

Abstract: A fastening tool draws a mandrel (5) to allow a caulking portion of the mandrel to deform a stem of a rivet (2) so that workpieces are fastened together. The fastening tool used in this process includes a nosepiece having a protrusion. During caulking, the protrusion of the nosepiece applies a force on a flange of the rivet to form a recess in the rivet flange and thereby peel a coating of the workpieces. As a result, electrical conductivity between the workpieces and the rivet is obtained.

Abstract: The invention provides press brake and press brake tooling technology. Certain embodiments of the invention provide a press brake tool that has an elongated, retractable safety key. In certain embodiments, the invention provides click-in/slide-out press brake tools. In some of these embodiments, the tool has a safety key defining a flat (i.e., a planar wall section/planar surface) that is adapted for sliding along a surface of a tool holder when the tool is dismounted from the holder by moving the tool horizontally out of the holder. In certain embodiments, the flat has a longitudinal length of at least about 0.008 inch (in some cases, at least about 0.010 inch, at least about 0.015 inch, or at least about 0.020 inch), ranging up to the full longitudinal length of the tool. In certain embodiments, the invention provides a press brake tool and a tool holder in combination. Finally, the invention in some embodiments provides methods of press brake operation.

Abstract: The distortion-free removal of a heat softened sheet metal part from a heated forming surface is enabled by the elevation of lift pads in the forming surface. Strategically located and sized pads are recessed in the forming surface of the hot forming tool and the pads are part of the forming surface. At the completion of the stretch forming, or other hot forming, of a sheet metal blank on the forming surface, the pads are lifted in unison, without rotating them, on lift posts by a suitable lift mechanism to carefully and uniformly strip the flexible part from the hot forming surface.

Abstract: Pneumatic door skins tool that uses air power to bend an automobile door skin edge with little effort. The tool is fully adjustable and has manual controls to allow a person to complete the task in a minimum amount of time with a minimal amount of effort.

Abstract: Bending press comprising: a stationary support structure (11), a first and a second toolholder unit (12, 13) movable relative to each other between an open position and a closed position, actuator means (14) able to command the relative motion between the toolholder units (12, 13) and to apply a bending force between the stationary structure (11) and at least one of said toolholder units (12, 13). At least one of said toolholder units (12, 13) comprises: a reaction structure (15), a precision structure (17) destined to bear a bending tool, and elastic means (198) positioned between the precision structure (17) and the reaction structure (15) and able to allow a movement of the precision structure (17) relative to the reaction structure (15) under the action of the bending load.

Abstract: The invention herein illustrates a tool and method for use in joining pipes or other tubular fittings having different diameters in a telescopic type joint. The preferred tool provides a pair of dimples or marks on one of the pipes to obstruct insertion as one pipe is slid into another. The obstruction thus provides a uniform overlap of the pipes to ensure sufficient surface area for the material used in the joining process, such as a brazing metal. Overlapping uniformity provides a strong, durable joint. The tool includes a pair of jaws which can be closed along the wall of the tubular member to form for example, a pair of dimples therein. In an alternate embodiment of the pipe fitting tool only one dimple is formed in the pipe wall from a single ram.

Abstract: A cable or the like protection and guide device, which can prevent rubbing damage or the production of wear powders in a cable or the like is disclosed. Link bodies (11) are articulably connected to each other in the longitudinal direction with a cable or the like (12) inserted. Each link body (11) comprises a pair of link plates (13) spaced on both sides of the cable or the like (12), connecting plates (14, 15), which are bridged on the articulation outer circumferential side and the articulation inner circumferential side of the link plate, and a partitioning plate (31) supported on at least articulation inner circumferential side connecting plate, which faces the link plates.

Abstract: The linked bracelet, in particular for a watch, comprises a metal hinged chain passing through a series of ornamental tubular links (4) made of ceramic material, each ornamental link (4) having at least one longitudinal passage (20), in which a metal link and a hinge associated with it are housed and can rest against an inside surface (26) of the base (27) of the ornamental link in the region of the hinge, when the hinge is in a folded position. A front face (23) of each ornamental link (4) has at least one raised section (34) located in the same region of the width of the ornamental link as said inside surface (26) where the hinge or the metal link rests, this raised section being arranged to abut against the opposite front face (24) of the adjacent ornamental link when the hinge is in said folded position. This arrangement balances the vertical force (F) exerted by the chain on the base (27) of the ornamental link at the right place and thus prevents any risk of fracture by transverse bending.

Abstract: The present invention relates to a toothed chain comprising plates interconnected on chain joints, in particular tooth plates, each of the chain joints comprising a pin bolt and at least two substantially directly adjacently arranged tooth plates whose aligned joint openings surround a respective pin bolt. The wear characteristics of such a toothed chain shall be improved. To this end, the edge portions of the joint openings are rounded at the opposite sides of at least the outer ones of the adjacently arranged tooth plates for a wear-reducing nestling of the pin bolt in case of load. Furthermore, the invention relates to a method of producing a toothed chain.

Abstract: A process for the production of tubular structural parts fabricated from PGM materials and having circumferential undulating bulges by forming from smooth-walled tube pieces. A smooth-walled tube piece (1) is inserted into a cylindrical forming die (2) with an internal diameter that corresponds substantially to the external diameter of the tube piece and that has radial undulating recesses (3). This die is provided at both axial ends with a press tool (4,5) that tightly seals the tube ends. The space that is thus formed is completely filled with an hydraulic fluid (6), and an hydraulic internal pressure is then produced by exerting an axial compression via the press tools (4,5) in such a way that under simultaneous shortening of the tube piece bulges (7) are formed in the wall of the latter that correspond to the recesses (3) of the forming die (2).

Abstract: A forming tool (1) for hydromechanically deep-drawing workpieces from sheet metal blanks (2), the tool comprising a water tank (3), which acts as a lower tool and can be filled with a liquid active medium (8), thus forming the drawing die. The tool is also provided with a drawing ring (10), which is located in the upper section of the water tank (3) and is sealed against a volume of the active medium lying below. The boundary of the ring aperture (11) of the drawing ring (10) forms a drawing edge for the workpiece (2). The forming tool also comprises a drawing punch (9), which can be displaced with the sheet metal blank (2) interposed, through the ring aperture (11) of the drawing ring (10) into the section containing the active medium (8), whereby the sheet metal blank is pressed onto the drawing punch (9) using a reaction pressure as the application pressure, by means of a targeted displacement of the active medium (8).

Abstract: A bending tool is disclosed for bending rebar, rod, pipe, tubing and/or any other suitable material, comprising: at least one base, and; at least one lever-handle further comprising a user-end and a pivot-end and; a pivotal means for connecting the base and the pivot-end of the lever-handle with rotational freedom, and; a means for bending disposed on the pivot-end of the lever-handle. Optionally, a pre-measure base and protractor or angle indicator may be also used. The lever-handle may be removed and used independently as a pry-bar to reposition protruding rebar from hardened concrete in the wrong location and for other prying-type uses.

Abstract: A super-plastic forming tool for forming aluminum sheets is provided that includes a seal bead that is configured to facilitate removal of the aluminum sheet from the seal bead after a super-plastic forming operation. Contraction of the aluminum sheet at a faster rate than the super-plastic forming tool facilitates removal of the aluminum sheet due to the specific geometry of the seal bead. The seal bead has a more shallowly sloped outer surface than its inner surface and may be provided in different configurations including flat, convex, concave shapes.

Abstract: Several methods of forming links for use with the creation of rope chains is disclosed, whereby the outer peripheries of such links are contoured prior to assembly into rope chains. In one embodiment, the wire used in the formation of intertwinable links is contoured and then cut into individual, pre-contoured links. In another embodiment, the outer periphery of non-contoured links are individually contoured prior to the intertwining of such links to form actual rope chains. In another embodiment, individual links are collectively contoured, preferably after arrangement on a support such as a mandril. Such contouring can be accomplished by hand, machine or the like.

Abstract: A portable devic for bending and cutting rebar, reinforcing rod, and the like. For cutting, a shaft assembly is movable along a first longitudinal axis (A—A) between a retracted and an extended position. A movable cutting head carried by the shaft assembly coacts with a fixed cutting head to shear rebar disposed between the cutting heads when the shaft assembly is moved to the extended position. For bending, a push rod movable along a second longitudinal axis (C—C) parallel to the first axis (A—A) couples movements of the shaft assembly through a clevis to a crankshaft such that longitudinal movements of the shaft assembly cause rotational movements of the crankshaft about an axis substantially perpendicular to axis (A—A). A first driven wheel, mounted for rotation with the crankshaft, has one or more bending blocks attached to the wheel by a radial arm.

Abstract: A means and method for inserting drivers into a surgical stapling cartridge, including a pallet that holds the cartridge firmly. The pallet has a central slot and laterally positioned lip members that are biased toward the slot. The cartridge is positioned in the slot and the lip members are released to extend their lips over the lateral flanges on the cartridge, thereby holding the cartridge in position. A finger extends into a recess formed at one end of the cartridge, thereby positively positioning the cartridge in the slot. The cartridge is released for removal by a tongue inserted between the lip members, thereby separating them by displacement.