Abstract: A rolling tool (5) has a basic body (6) for fastening the rolling tool (5) in a rolling machine (1) and a profiled part (7) for the shaping treatment of a workpiece (2) to be rolled. The basic body (6) and the profiled part (7) are of multi-piece design. The basic body (6) and the profiled part (7), in their interconnected position, are mounted movably relative to one another in a plane perpendicular to the rolling direction (23). The basic body (6) of the rolling tool (5) can also be part of the rolling machine (1).

Abstract: Cold-forming equipment configured as a high precision thread rolling assembly utilizing racks, guide rails, a bearing assembly including rolling element linear motion bearings and a gear reduction assembly.

Abstract: The invention relates to a self-tapping screw with a head and an outer thread support. The core cross-section of the outer thread support has the shape of a rounded n-sided polygon, n being a prime number>3.

Abstract: The invention relates to an apparatus (100) for positioning a tool (21) in a profile rolling machine, comprising a base (10) and at least one spindle (30) extending in a first bore (17) of the base as abutment for the tool (21). A retraction rod (25) serves as connection between the base and the tool (21). A tractive force for the retraction rod (25) is generated by an actuator (50) and the tool is pulled by the retraction rod (25) against a tool stop (23). The first bore (17) is locally expanded to form a cylinder chamber (12). A piston (40) is mounted in an axially displaceable manner in the chamber (12). A pressure medium (M) is introduced via a pressure connection (46) into the base (10) into the cylinder chamber (12) between the base and the piston (40) for applying a force (F1) on the piston (40).

Abstract: A roll die for use with a thread roiling apparatus for roll forming threads on a part is disclosed. The roll die generally comprises a stationary roll die having a first predetermined thread on one surface thereof. The roll die also comprises a moving roll die having a second predetermined thread on a first predetermined portion of a surface thereof and a third predetermined thread on a second predetermined portion of the surface of the moving roll die. The moving roll die also includes at least one ramp arranged between a second predetermined thread and a third predetermined thread. The roll die may be capable of roll forming multiple threads on a fastener or threaded blank or part in a single pass.

Abstract: A universal bell housing which may be adapted to a variety of automotive engine and transmission combinations and method of making the same is disclosed. The bell housing is made by spin forming a sheet of steel and welding a transmission plate onto the cone. The cone and transmission plate are indexed to mount to a specified engine-transmission combination.

Abstract: The invention relates to a profile-rolling machine for rolling a profile in a blank, wherein the profile-rolling machine has a first and a second profile-rolling jaw. The second profile-rolling jaw (126) is guided—held by a carriage (124)—in a guide track (130) relative to the first profile-rolling jaw (110) for the purpose of rolling the profile into the blank. The carriage (124) has a carriage slide plate (122) and the guide track (130) has a guide slide plate (132). The two slide plates together form a sliding pairing and slide on each other. In order to render said sliding pairing less susceptible to dirty lubricant and less susceptible to wear, it is proposed according to the invention to manufacture the guide slide plate (132) and/or the carriage slide plate (122) at least partially from ceramic or from a non-metallic material or to coat the same with such materials.

Abstract: An automatic rolling machine with flat chasers, comprising a motionless plate and a movable plate. The movable plate is fixed to a supporting structure that has a reciprocating motion actuated by means of a spindle, crank and linkage, the spindle being supported by a base. The base comprises a first motionless part, which is rigidly coupled to the frame of the machine, and a second movable part, which constitutes the support for the spindle, the position of the movable part with respect to the motionless part being adjustable by a means for varying the position of the movable part with respect to the motionless part.

Abstract: A new and improved thread rolling die for forming a new and improved threaded fastener, and a new and improved method or technique of manufacturing the new and improved threaded fastener, is disclosed wherein the new and improved threaded fastener comprises a first, primary thread lead, and a pair of second, auxiliary thread leads alternatively interposed between successive threads of the first, primary thread lead. As a result of the provision of the pair of second, auxiliary thread leads being interposed between successive ones of the threads of the first, primary thread lead, not only is additional axial reinforcement provided for the threaded fastener, but more importantly, the lateral or transverse distance through which the material comprising the blank member must be displaced or moved in order to form the successive threads of the first, primary thread lead is substantially reduced.

Abstract: A thread rolling machine is provided with a structure for adjusting a fixed mold seat of the machine. The structure comprises a first slide plate, a second slide plate mounted slidably on the first slide plate, and a fixed mold angle adjusting mechanism mounted on the second slide plate for adjusting the inclination angle and the blind angle of the fixed mold. The adjusting mechanism comprises an inclination angle adjusting block and a blind angle adjusting block. The blind angle adjusting block is actuated by an adjustment rod to engage in a horizontal displacement, whereas the inclination angle adjusting block is actuated by an adjustment rod to engage in a longitudinal displacement. The fixed mold is so adjusted that it is in an appropriate thread rolling position relative to the movable mold of the thread rolling machine.

Abstract: A hand held tool for crimping a stent onto a balloon of a catheter is disclosed. The stent crimping tool is operated in one hand by squeezing two plates together while simultaneously displacing the plates linearly to crimp and roll the stent held between the plates. Specifically, the crimping tool includes a base plate with two bosses through which respective pins pass linking the base plate to a compression plate. The compression plate has elongated diameter openings at opposite sides thereof to receive the pins. With the elongated diameter openings, the compression plate can pivot at the pins and translate linearly relative to those pins thus enabling the rolling action during the crimping process. A compression profile pad and a tapered profile pad are attached to the crimping areas of the plates to grip and together apply pressure to the uncrimped stent held therebetween. The pads may include specific contours in order to impart a desired profile to the crimped stent.

Abstract: A machine and method for knurling an end portion of a cylindrical workpiece including a hypodermic needle or biopsy needle. The machine includes a base to which a reciprocating mechanism and a serrated block are attached. A pressure bar is positioned above the base and has a second serrated block attached thereto. The pressure bar is reciprocated back and forth, each movement comprising a stroke. A pair of lobes are attached to the top surface of the pressure bar. A pair of roller blocks are also attached to the base, each roller block having a rectangular opening and a roller located therein. The pressure bar passes through the rectangular openings. As the pressure bar is reciprocated back and forth and the lobes come into contact with the rollers, the pressure bar is biased toward the base whereby a knurl is formed in a workpiece placed between the two serrated blocks. A method for knurling an end portion of a cylindrical workpiece is also disclosed.

Abstract: A thread rolling machine in which the dies are monitored for a mismatch condition by a proximity sensor responsive to displacement of the moveable die in a direction parallel to the axis of the workpiece. This displacement, which occurs when a mismatch condition exists, is permitted by the running clearances in the slide carrying the moveable die. When more than a negligible displacement occurs, corrective action can be taken to reject out of specification workpieces and to adjust the relative positions of the dies to maintain them in a matched condition.

Abstract: A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Abstract: Disclosed is a machine for re-sizing spent ammunition cartridges, such as spent brass cartridges for hand guns. A pair of forming rails which move with respect to one another to roll the cartridge between the rails in order to restore the cartridge to the original cylindrical specifications. The forming surface of one of the forming rails includes an inclined step which lengthens the cartridge as the bulge is rolled out of the cartridge neck.

Abstract: A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Abstract: A method and apparatus for manufacturing a masonry fastener having a helical portion. A workpiece is positioned between a pair of tools mounted for relative movement. Both tools have faces defining a plurality of raised and recessed portions that extend generally diagonally thereacross. A frame supports the tools such that the face of one tool generally opposes the face of the other tool face. Relative movement of the tools causes the workpiece to rotate and move across the faces where it is deformed by the interaction of the respective raised and recessed portions of each tool. The result is a masonry fastener having at least a portion of its body formed into a substantially helical shape.

Abstract: A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Abstract: A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Abstract: A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Abstract: An abrading tool and method of manufacture wherein a non-uniform abrading surface is formed on the tool by multiple passes of dies having similar non-uniform surfaces.

Abstract: A process and die unit for fabricating stepped nails wherein a top portion of a blank is pressed into a rough slender tip portion at the first step of the process, and a shank portion of the blank is pressed in the second step of process so as to have threads on the peripheral surface thereof, and the rough slender tip portion is simultaneously pressed for correction so as to refine into a finished slender tip portion.

Abstract: The stationary die of a flat die thread rolling machine is supported on a series of stacked members which may be automatically unclamped, automatically adjusted and then automatically re-clamped to hold the stationary die in a precisely adjusted position relative to a reciprocating die. Fastener blanks from a supply hopper are fed to the dies along a set of parallel rails and are captivated by an upper hold-down rail, there being means for automatically and simultaneously adjusting the elevation of the hopper and the parallel rails and there further being means for independently adjusting the angle and elevation of the hold-down rail. Adjacent blanks in the parallel rails are separated from one another by a catcher which enables a pusher to insert the blanks between the dies in a smooth and trouble-free manner.

Abstract: A device is described for straightening rotationally symmetrical, cold-deformable workpieces, wherein these workpieces are deflected between bearing and straightening points as far as the plastic stress region. The workpieces are simultaneously set in rotation and then, during the rotational movement, the deflection is continuously removed again. The invention is characterized in that the workpieces are guided between a stationary bearing surface and stationary upper rails, the workpieces being gripped between pairs of rollers which form a prismatic gripping device and roll on the bearing surface, the workpieces simultaneously travelling in the pairs of rollers and along the upper rails and thereby being simultaneously deflected. It can be acheived in a very short time because a plurality of pairs of rollers, each of which grips one particular workpiece, are continuously guided in one direction between the bearing surface and the upper rails behind one another with a spacing therebetween.

Abstract: A thread rolling monitoring system in which one or more signal generating devices is provided in the mounting system of the stationary die of a pair of thread rolling dies. A sensor develops a signal which is a function of the reaction forces in a direction substantially parallel to the axis of the workpiece being threaded. The signal provides a running indication of the match or mismatch of the dies, as well as other conditions of improper operation. The signal is used to control the operation of the machine and to separate improperly formed parts as they are produced.

Abstract: The stationary die of a flat die thread rolling machine is supported on a series of stacked members which may be automatically unclamped, automatically adjusted and then automatically re-clamped to hold the stationary die in a precisely adjusted position relative to a reciprocating die. Fastener blanks from a supply hopper are fed to the dies along a set of parallel rails and are captivated by an upper hold-down rail, there being means for automatically and simultaneously adjusting the elevation of the hopper and the parallel rails and there further being means for independently adjusting the angle and elevation of the hold-down rail. Adjacent blanks in the parallel rails are separated from one another by a catcher which enables a pusher to insert the blanks between the dies in a smooth and trouble-free manner.

Abstract: A machine for cutting and threading bicycle spokes (11) comprising a cradle (15) for receiving a spoke, a cutter mechanism (17) positioned to intersect and cut off the spoke at a predetermined point, and a thread rolling apparatus (56) positioned adjacent the cutter. By turning a handle (41) the cutter mechanism is actuated by an eccentric (54) and cam (32) to actuate a lever (24) and move a shear (20) past a stationary shear (19) and sever the spoke. Further turning of the handle causes a feed lever (66) to shift the spoke to a position to be contacted by a movable die (61) to complete the cutting and threading process.

Abstract: An apparatus and method are provided for roll sizing the periphery of cylindrical workpieces to finish and size the workpiece to a close tolerance diameter. The method and apparatus can also be used to prefinish and presize cylindrical workpieces in preparation for subsequent forming of spline teeth or gear teeth and the like on the workpiece periphery.

Abstract: A mill for cross rolling, comprising a detachable housing (1) inside which there are disposed parallel plates (4) and (5) provided with wedge-shaped deforming tools (9) and (10). On upper and lower portions (2) and (3) of the housing (1) there are provided projections (13) having through coaxial openings whereinto are introduced rotary pins (14) and (15) having cylindrical and shaped portions (16) and (17). The rotary pins (14) and (15), while being in one position, rigidly connect the portions (2) and (3) of the housing (1) and, when turned by an angle of 180.degree., allow the load to be operatively removed from a seizured billet.

Abstract: A self-tapping screw of the type including a head, a depending cylindrical portion, a tapered point and a thread running continuously from the cylindrical portion onto the tapered point and a method of making same are disclosed. A screw blank is formed with a constant diameter cylindrical shank, the lower end of which includes a depression or concavity. Cooperating, relatively moving dies including opposed faces defining a tapered slot within which the blank is received cut a continuous thread into the blank. The concavity in the blank permits the metal to flow more readily resulting in crisp threads and a significant increase in the life of the thread rolling dies.

Abstract: A significantly simplified, rugged attachment is provided for a standard thread rolling machine for quick and easy re-rolling of threaded parts for producing high quality threads. A pressure foot is mounted between an open end of a feed chute and the starting end of a fixed die and is biased toward a confronting movable die for urging a threaded part into mesh with the die surface of the movable die when it is moving toward a rear limit position. Such mesh between the threaded part and movable die is effected before the threaded part is pushed by a starter blade into matched rolling position against a starting end of the fixed die and thereafter the moving die reverses its direction of movement to stroke into a forward limit position to effect precision re-rolling of the previously threaded part to produce a high quality finished part.

Abstract: The stationary die of a thread rolling machine is mounted in a holder which enables the stationary die to be tilted relative to the movable die about an axis which coincides with the upper edge of the thread forming face of the stationary die. The upper edge of the die thus stays stationary when the die is tilted and remains in a fixed position relative to a track which guides fastener blanks between the dies.

Abstract: A transverse wedge forming machine is mainly designed for producing (forming) bodies of revolution, such as stepped shafts.The transverse wedge forming machine of the present invention comprises a housing wherein two parallel plates: a movable and a fixed one, are mounted opposite to each other. The movable plate is mounted in longitudinal slideways of said housing. Each of said plates mounts a composite-in-length wedge-shaped forming tool, the components of each of said forming tools being arranged in a single row in a direction normal to said longitudinal slideways so that the tops of the adajcent components are directed at the opposite sides. The machine comprises also a device adapted for adjusting reciprocating displacement of a part, being formed, from one component of the forming tool disposed on the fixed plate to its next component.

Abstract: By forming a plurality of substantially parallel grooves in the peripheral surface of a cylindrical spark wheel blank, and then rolling the grooved spark wheel blank between at least two cooperating dies, an inexpensive, unique spark wheel is rapidly and efficiently formed having a multitude of ramp top surfaces terminating in raised sharp cutting edges and burrs throughout its outer peripheral surface. The spark wheel blank must rotate between the dies sufficiently to impart the desired abrasive characterisic to the spark wheel surface. The dies employed in the process of this invention must incorporate either a plurality of cutting edges which are spaced closely enough to prevent the spark wheel from bottoming out on the die during the rolling step or relief channels at the base of each cutting surface which prevent destruction of the abrasive spark wheel surface.