Abstract: A method of controlling the clamping movement of a single action drawing press having a fluid actuated pressure member wherein movement of the pressure member is interrupted by stops after a predetermined range of movement toward the base of the press. The apparatus for carrying out the method includes one or more stops, carried by the base, and dimensioned to engage the pressure member and overcome the pressure normally urging it toward the base after the predetermined range of movement.

Abstract: The disclosure relates to a novel shell such as used in the manufacture of can ends, and to a method and tools for making such a shell. A non-circular blank having rounded corners is cut from thin metal. The blank is oblong in a direction transverse to the grain of the metal. A first set of tools separates the blanks and forms a substantially flat central panel and an upward-extending chuck wall about the edge of the panel to produce a partially formed shell. The junction area between the panel and the chuck wall has a relatively large radius of curvature at this time. A second set of tools forms in the blank a lip extending outward from the upper end of the chuck wall and generally parallel to the panel; then the panel and the chuck wall are separately gripped, followed by relative movement between the panel and the chuck wall while wrapping the junction area around a forming punch to form a panel wall in the junction area extending upward from the inner part of the chuck wall.

Abstract: Disclosed is a method and apparatus for feeding a material to a hot forging machine in a forging line in which a coiled material is uncoiled, straightened, fed intermittently by pinch rollers through a heating device, cut by a cutting device and then fed into a hot forging machine. The method has the steps of preparing a driving device which drives the pinch rollers mechanically independently from the hot forging machine; picking up the timing of forging conducted by the hot forging machine as an electric signal, and controlling the driving device in accordance with the electric signal.

Abstract: A method of controlling the spacing between a material forming punch and a complemental die includes advancing a punch shell and a pressure sleeve into engagement with the material and holding the material with the sleeve and blanking it with the punch shell. The material is then preliminarily formed by clamping the periphery between the pressure sleeve and a die core ring and advancing a punch core past the top of the die core ring and clamping the material against a die core to establish the desired dimension. The material is then finally formed by further advancement of the punch core with the die core and die core ring moving together. The apparatus includes a die core and die core ring which are concentrically arranged and independently supported but movable into engagement with each other after a predetermined amount of travel so as to move together through any further travel caused by movement of a punch core against the die core.

Abstract: The present invention relates to a spur gear automatic production process wherein spur gears are cold-press formed. The invention provides a top and bottom table with stock fed therebetween in sequential operation with the vertical stroke of the press machine, stamping a disk-shaped gear workpiece by means of top and bottom die sets in the first section which are positioned for integrated movement, thereafter moving said gear workpiece to the second section by means of an unobstructed feed, stamping thereon the tooth profile by means of the vertical stroke of top and bottom die sets positioned in said second section, and ironing said gear workpiece in the reverse direction to the stamping process.

Abstract: A method of controlling the clamping movement of a single action drawing press having a fluid actuated pressure member wherein movement of the pressure member is interrupted by stops after a predetermined range of movement toward the base of the press.

Abstract: A module type forming machine having a central driving wheel gear rotatable about a horizontal axis and disposed behind a working table extending in a vertical plane, and a plurality of slide units including slides which are arranged radially around the central driving wheel gear and which carry forming tools at their radially inner ends, the slides being linearly slidable in the radial directions by the operation of the respective pinions meshing with the central driving wheel gear. The forming machine further has a base detachably attached to a lateral side of the frame of the forming machine, the base carrying an upper shaft and a lower shaft and a plurality of working units adapted to be driven by the upper or the lower shaft so as to perform linear vertical working motions and arranged in a side-by-side fashion.

Abstract: Disclosed is a method and apparatus for feeding a material to a hot forging machine in a forging line in which a coiled material is uncoiled, straightened, fed intermittently by pinch rollers through a heating device, cut by a cutting device and then fed into a hot forging machine. The method has the steps of preparing a driving device which drives the pinch rollers mechanically independently from the hot forging machine; picking up the timing of forging conducted by the hot forging machine as an electric signal, and controlling the driving device in accordance with the electric signal.

Abstract: A method of forming a container end panel having a countersink radius and a chuckwall including preforming the radius and the chuckwall so that the chuckwall includes a straight wall portion tangent to the radius and reforming and reducing the radius without tooling restraint while holding pressure against the straight wall area. Apparatus for performing the method includes a punch core and a cooperating die core ring having complimental geometry for forming the chuckwall and radius configuration. The article formed by the method and apparatus includes an end panel having a straight wall portion between the normal tapered wall portion and countersink radius.

Abstract: A method of forming container end panels includes first forming the bottom outer panel and then preliminarily forming the chuckwall and countersink radius by pulling material from the peripheral edge area with a punch core. The countersink radius is finally formed by partially retracting the punch core from the radius while holding the chuckwall to wrap some of the material in the radius upwardly. The apparatus includes an outer punch core with a tapered nose which preliminarily forms the chuckwall and countersink radius and then is retractable from the radius while holding the wall during final forming of the radius.

Abstract: Methods and apparatus are disclosed for fabricating from ductile sheet metal a can body with integral side and bottom walls. A rounded non-circular blank is formed from the sheet metal, the blank having a greater width across the grain of the metal than along such grain. The blank is formed into a cup-shaped receptacle having a bottom and an upstanding wall of not less than the desired internal size of the can body. The wall has a length substantially less than the desired depth of the can body and is substantially thicker than the thickness desired in the finished can body. The wall is then thinned to the desired thickness so as to lengthen the wall to at least the desired depth of the can body.

Abstract: A separable die block contains a cavity for shaping a part from a slug of cylindrical malleable metal and a cylindrical injector for injecting the slug of metal into the die block cavity, the injector having an outer sleeve and a coaxial inner pin which are axially moveable with respect to one another for forming an opening or a recess in the part. As a further feature, a moveable plunger in the die block is in communication with the die block cavity for further altering the shape of the formed part, if desired.

Abstract: Method and apparatus for forming or reforming the shell of a two-piece container includes forming a cup shaped member in an upside down condition, reverse drawing the shell to form an over length chuckwall loosely holding the shell while pulling the excess material from the chuckwall into the bottom panel of the shell. The apparatus comprises tooling incorporated into a double acting press and including a punch core carried by the inner ram and an opposed die core carried by the bottom platen, a first pressure member carried by the outer ram and a die core ring fluidly supported on the bottom platen opposed to the pressure member and a punch shell carried on the inner ram. A second fluid pressure sleeve means is carried on the bottom platen in opposed relationship to the punch shell and a knockout piston is also carried by the lower platen opposed to the punch core and encircling the die core.

Abstract: A method and apparatus for forming end panels of uniform thickness for use with two-piece containers. The method includes the steps of engaging the stock under fluid pressure and blanking it; wiping the periphery of the stock against the blanking die to form a lip extending in a direction substantially normal to the planar surface of the blank. While still maintaining pressure on the blank, further steps involve drawing the blank to form an edge area that extends above the top planar surface of the blank and has a cross-sectional configuration resembling an inverted letter J, and finally completing forming of the end panel by reverse drawing the central body portion of the blank in an upward direction to set a chuckwall between the central body portion and the edge area. The apparatus includes tooling for a double action shell press which is capable of engaging and holding down the work piece under fluid pressure while performing the blanking and drawing operations.

Abstract: The disclosure relates to method and tools for making shells used in the manufacture of can ends. A first set of tools makes blank pre-forms having a substantially flat central panel and an upward-extending chuckwall about the edge of the panel. The junction area between the panel and the chuckwall has a relatively large radius of curvature at this time. A second set of tools forms on the blanks a lip extending outward from the upper end of the chuckwall and generally parallel to said panel; then the panel and the chuckwall are separately gripped, followed by relative movement between the panel and the chuckwall while wrapping the junction area around a forming punch to form a panel wall in the junction area extending upward from the inner part of the chuckwall. Then the lip is formed into a curl edge section which ends in an inner curl diameter that is round and concentric with the chuckwall.

Abstract: A method and apparatus for forming shells for use as can ends is disclosed. A sheet of thin metal is supplied to a first station within a ram press, at which a generally circular blank is separated from the sheet and partially formed into the shell. The partially formed shell is transferred from the first station along a predetermined path to a second station within the same press by striking a blow edgewise of the shell and thereby directing it edgewise to the second station. The shell is captured and located at the second station, whereupon the shell is further formed to make the completed shell.

Abstract: A method and apparatus for forming end panels or shells for two-piece cans includes incorporation of the tooling necessary to form the panel within a double acting press. The tooling includes a fluid actuated hold down sleeve, carried by the outer slide of the press, which is capable of being moved into holding engagement with the metal from which the panel is formed. The inner slide of the press carries a punch which is movable into forming engagement with the metal and the outer slide carries tooling which is capable of blanking the metal against a cut edge carried by the fixed lower platen of the press. The chuck wall of the end panel is then preliminarily formed by the action of the punch drawing the blank around the fixed radius of a die core member fixedly carried by the bottom press platen.

Abstract: A press includes a frame, a flywheel, a motor for driving the flywheel, and a shaft. A clutch and brake assembly is provided which is actuable for engaging and disengaging the shaft to the flywheel. An eccentric is journaled upon the shaft and rotates therewith. The eccentric rotates in a block which is slidably mounted in a head to permit the block to move laterally within the head. The head is vertically movable in response to vertical movements of the block. The press also includes an upper die which is mounted on the head and a lower die which is resiliently supported upwardly on a base. Movement of the head engages and disengages the upper die and lower die. One embodiment of the press includes a second set of dies mounted to the head for cutting a continuous sheet of material into a predetermined shape.

Abstract: A method and apparatus is described for use in combination with a machine for corrugating a continuous strip of flat sheet material which prepares the sheet material for separation into sections after it has been corrugated. A platform is located upstream of the corrugating machine. The platform is intermittently advanced in the direction of travel and at the speed of the sheet material so that the platform is stationary relative to the sheet material. A scoring device is located on the platform. The scoring device moves across the width of the sheet material as the platform moves with the sheet material to form a spanwise weak point in the material. After the material passes through the corrugating machine, it can readily be separated into sections at the weak points formed in the material by the scoring device. Depth of scoring can be varied also so that substantial/total separation can also occur within the corrugator though it would not separate the flat strip before it entered the corrugator.

Abstract: A metal sealing member comprising a metal cylindrical member, one end thereof being adapted to be soldered to another member to form a hermetic sealing structure is manufactured by squeezing a metal plate into a cup-shaped member, forming an annular recess at an opening of the cup-shaped member or forming a circular projection at a bottom thereof, and cutting the annular recess or a portion surrounding the circular projection.

Abstract: A mandrel jaw and a process for forming it from a strip of steel including the steps of forming a shape, bending portions of the shape and then stamping the bent body into the configuration of the jaw.

Abstract: A method and apparatus is described for use in combination with a machine for corrugating a continuous strip of flat sheet material which prepares the sheet material for separation into sections after it has been corrugated. A platform is located upstream of the corrugating machine. The platform is intermittently advanced in the direction of travel and at the speed of the sheet material so that the platform is stationary relative to the sheet material. A scoring device is located on the platform. The scoring device moves across the width of the sheet material as the platform moves with the sheet material to form a spanwise weak point in the material. After the material passes through the corrugating machine, it can readily be separated into sections at the weak points formed in the material by the scoring device. Depth of scoring can be varied also so that substantial/total separation can also occur within the corrugator though it would not separate the flat strip before it entered the corrugator.

Abstract: Method of forming profiled reed blades by stamping from a metal strip, in which method the reed blades are processed while the ends thereof are still a part of the metal strip, with a final stamping out of the ends to complete the formation of the reed blades.

Abstract: A fineblanking press having two groups of elements, the first group including an interchangeable die set having an upper die member, a lower die member and guide posts with the second group including a support plate, guide pins and an ejector element, the separate groups providing improved interchangeability, maintenance and stability.

Abstract: A method of producing blanks and shaped articles therefrom from sheet material comprises the steps of supporting the sheet material on a blanking die having a substantially cylindrical entrance aperture, an exit aperture and an inwardly converging transition zone extending from the entrance aperture to the exit aperture. A blank is punched from the sheet using a blanking punch having a cross-sectional area less than the extent of the entrance aperture, the blank being punched out by displacing the blanking punch into the entrance aperture. The blank is formed into a shaped article by means of a second punch and die assembly wherein the exit aperture can serve as a blank holder.

Abstract: Press mounted apparatus is disclosed for shearing a blank from a metal sheet and for drawing the blank to a cup-shaped configuration. The apparatus includes a fixed annular drawing die mounted on the press bed and having a drawing surface extending radially from the die opening and terminating in a circular cutting edge, and a movable tool assembly mounted on the press slide and including a draw pad and a cutter member. The draw pad is mounted on the slide for reciprocating movement relative thereto and to the cutter member. The cutter member is cooperable with the cutting edge on the fixed die to sever a blank from a sheet of material therebetween, and the draw pad has a drawing surface opposite the drawing surface of the fixed die. The two drawing surfaces engage opposite sides of the blank, and the drawing surfaces are spaced apart a predetermined distance related to the thickness of the sheet material by opposed pins carried respectively by the draw pad and fixed tool assembly.

Abstract: The skeleton discharge mechanism receives the leading edge portion of scrap skeleton sheets one at a time from a press at an entrance portion of a support surface exactly positioned by the press relative to a pick-up station and transversely spaced pairs of engagement members move partially upwardly through the support surface on a timed basis to engage the sheet leading edge through press formed part openings. The engagement members are secured to chains constantly moving over sets of sprockets along closed paths and after engaging the sheet leading edge move longitudinally along the support surface to a surface exit portion pulling or dragging the sheet through the mechanism.

Abstract: A method for manufacturing a bottom valve seat for use in a hydraulic damper is provided including the steps of: punching out a circular blank from a flat plate of a given thickness to prepare a circular blank having given dimensions; drawing the blank into a cup-shaped work having a circumferential flange portion; forming a cylindrical wall in the cup-shaped work thus provided, with the wall having a given length; and pressing the central portion of a bottom portion of the cup-shaped work downwards or internally, thereby forming an annular flat portion along the circumferential edge of the bottom portion; cutting the flange portion into given dimensions; and punching a through hole in the flange portion. In this bottom valve seat, the flange portion has a flat surface and at least one oil passage is provided in the portion of the valve seat, which is opposite to the bottom portion.

Abstract: A method of forming a friction disc having projecting teeth including load bearing edge faces, in which one or more surfaces of the disc is indented to reform the edge faces while confined within a die cavity.

Abstract: In order to overcome the limitations on availability of suitable steel strip or bars in widths to suit all diameters of agricultural discs, a method of manufacturing such discs comprises cutting blanks from rolled steel strip or bar having a thickness greater than the thickness of the finished discs and a width less than the diameter of the finished disc, the blanks having a length substantially equal to the diameter of the finished discs, rolling each blank in the direction of its width until that dimension has increased to not less than the diameter of the finished discs, and blanking out from each rolled blank a disc with a diameter not less than the diameter of the finished discs and with a central hole, the cross-rolling of the strip or bar necessary to achieve the required increase in width and reduction in thickness having the beneficial result in affording quality comparable with that of discs formed from cross-rolled plate or sheet.