Abstract: An assembly and method of forming a press cutting die that includes a cutting blade that is supported by a blade support assembly or blade support. The blade support includes a first base portion and a second base portion that are each contoured to cooperate with one another to capture a portion of the cutting blade along an interface between the first and second base portions. Preferably, one or more keys extend between the first and second base portions and traverse the geometric plane associated with the cutting blade. Such a press cutting die is particularly applicable for cutting biologically compatible materials having a desired shape from a bulk source of the biologically compatible material.

Abstract: A punch assembly includes a punch, a sleeve, a draw stud and a die. The sleeve adds rigidity to the draw stud, thereby reducing elastic deflection of the draw stud, reducing bending moment on the draw stud, reducing punching force, and extending the punch, draw stud and die fatigue life. The sleeve also aids in axial alignment of the punch, die and workpiece with a pilot hole drilled through a workpiece.

Abstract: An assembly includes a die and a punch which cut a hole in a workpiece. The die has a base wall having outer and inner surfaces and a passageway extending therethrough, and a wall extending from the base wall. The inner surface of the base wall has at least one portion which is angled relative to a central axis of the die. The punch includes a body having a bore therethrough, a leading edge on the body which is capable of piercing and cutting a workpiece, and cutting edges on the body for cutting a hole in the workpiece. The leading edge has inclined surfaces between the bore and the piercing points which engage with the portion of the inner surface of the die.

Abstract: The invention relates to a method for milling a cutout in a piece of material, the cutout having peripheral edge portions in a corner region that meet one another at an angle, and the cutout being formed using a milling cutter which during operation occupies an enveloping surface, for example a cylindrical surface, having a lateral face and an end face, the corner region being initially formed in a first orientation of the milling cutter which preferably corresponds to a longitudinal axis of the cutout, by use of the portion of the milling cutter that generates the lateral face of the, for example cylindrical, surface.

Abstract: A trimming die includes a first die base assembly, a second die base assembly, and a trimming punch. The first die base assembly includes a fixing portion; the second die base assembly is positioned opposite the first die base assembly; the second die base assembly includes a die cavity portion; the die cavity portion has a die cavity and a die cavity inner wall; the die cavity inner wall has a plurality of first slant grooves; the punch has a fixing end portion and a trimming end portion positioned opposite the fixing end portion; the fixing end portion is disposed at the fixing portion; the trimming end portion is positioned corresponding to the die cavity; a peripheral surface of the trimming end portion includes a plurality of second slant grooves. A trimming punch is also provided.

Abstract: To enable fabrication of a precise stamped product having an extremely low surface roughness. Ripples 24 having depths ranging from 10 to 100 nm are formed with periodicities ranging from 100 to 1000 nm on a stamping tool surface that comes into contact with a workpiece material. The ripples 24 have a stripe shape extending in a direction substantially perpendicular to the direction of sliding between the stamping tool (die 21) and the workpiece material (the direction of the arrow a). The ripples 24 serve as micro pools. For example, a product that is required to have a surface roughness of the order of several tens of nm or lower can be satisfactorily stamped.

Abstract: A hole punch device that reduces the force required to create a hole in papers or other sheet media. A punch element of the hole punch device includes a locally sloped or indented floor to create a bend in the sheet media as it is punched to create an enlarged, oval hole. The punch pin may include an expanding sleeve surround the pin that forms a larger diameter during the cutting stroke and springs back to a smaller diameter during a pull out stroke. A coiled torsion return spring is positioned remotely from and non-coaxially with the punch pin. A keyed pin and support frame arrangement ensures a predetermined rotational orientation of the pin for sequential cutting for reduced cutting force. A long lead-in surface in the frame helps installing sheet media into the feed slot of the punch element.

Abstract: A metal shell machining apparatus includes a cutting tool and a pressing tool. The cutting tool has a main body, at least two blade bodies, at least two enlargement portions, and at least two blade heads. The main body is a hollow cylinder, the blade bodies are formed by extending downwards from lower end of the main body, and there are at least two intervals between the blade bodies. The enlargement portions are formed by extending downwards and outwards from lower ends of the blade bodies, the blade heads are formed by extending downwards and inwards from lower ends of the enlargement portions. The pressing tool is a hollow cylinder and encircles a periphery of the cutting tool. The lower end of the pressing tool abuts the enlargement portions of the cutting tool. The apparatus can easily form oblique grooves on a metal plate, reducing manufacture cost.

Abstract: A hole punch device that reduces the force required to create a hole in papers or other sheet media. A punch element of the hole punch device includes a locally sloped or indented floor to create a bend in the sheet media as it is punched to create an enlarged, oval hole. The punch pin may include an expanding sleeve surround the pin that forms a larger diameter during the cutting stroke and springs back to a smaller diameter during a pull out stroke. A coiled torsion return spring is positioned remotely from and non-coaxially with the punch pin. A keyed pin and support frame arrangement ensures a predetermined rotational orientation of the pin for sequential cutting for reduced cutting force. A long lead-in surface in the frame helps installing sheet media into the feed slot of the punch element.

Abstract: A punch arrangement for punching holes in a moving web of a plastic film has a pivoted yoke mounted on a fixed bracket above the plastic film. An air cylinder or other actuator is mounted on the yoke and has a cutting head mounted on the rod of the cylinder. The cutting head is in registered alignment with an aperture on a support plate below the film. The film engages and swings the cutting head out in the film transport direction until the head rises out of contact with the film. Then a spring urges the yoke, actuator and cutting head back to their home position. A punch cycle can be carried out repeatedly on the film while the film is in constant motion.

Abstract: A die body includes a die hole for punching a work. A core, including a discharge hole, which is in communication with the die hole, is provided in the die body. The core is provided with a plurality of fluid injection ports through which fluid is injected downward of the discharge hole. The die body is provided with inflow ports through which compressed fluid flows into the fluid injection ports. The core is made of resin. The discharge hole is tapered toward its upper side. An outer peripheral surface of the die body is provided with a peripheral groove which is in communication with the inflow ports.

Abstract: A punch and die tooling apparatus commonly used by metal fabricators for creating holes, passages and cavities in metal plate, the die having a unique internal bore which relieves the problem of slug pulling to ensure that a slug punched out of a metal sheet is not retained on the punch face to interfere with further operation of the apparatus. The die is provided with a substantially horizontal ridge and a corresponding horizontal land and relief space formed within the bore to facilitate tipping of the slug relative to the punch and thereby break any attachment between the slug and the punch face which causes slug pulling.

Abstract: Mold apparatus for molded wood strand three-dimensionally carved articles of manufacture using at least one hole punch comprised of a base and a funnel shaped hole-defining portion having a funnel angle of 20 degrees or greater to vertical for producing molded holes at angles of 20 degrees or greater to vertical, to facilitate insertion of items such as a T nut within the molded hole in an assembly-line like fashion.

Abstract: A punch and backer plate combination is disclosed as an example of the present invention. The punch has a concave recess in its extended end. The punch may be round or have a rectangular shape in plan view and includes a backer plate having an aligned opening with a similar shape to the punch plus a clearance dimension. The aligned opening of the backer plate includes an upper portion and a lower portion, where the lower portion is enlarged in comparison to the upper portion to allow relief for a slug of material from the workpiece.

Abstract: The present invention provides a die button assembly for locating a die button relative to a body die, and for facilitating removal of the die button from the body die. The assembly includes a substantially cylindrical button having a volumetrically reduced region and a complementary, internally threaded die button extractor having a foot portion extending into the volumetrically reduced region and facilitating removal of the button from the body die via an upward force applied to the internally threaded portion.

Abstract: A manually operated corner cutter includes a base, a support and guide device, a blade post, multiple cutting tools, a press and control handle, and a press plate. The support and guide device includes an upright support post and a slide seat each secured on the base. Thus, the manually operated corner cutter may be operated easily, rapidly and conveniently. In addition, the cutting tool may be replaced easily and conveniently, thereby facilitating replacement of the cutting tool.

Abstract: A gutter punch device is positioned over the water collecting opening of the gutter and is adapted to punch the front and rear sheet metal portions of the gutter. The punched holes are made prior to the hanging of the gutter and are used to receive the gutter fastener for securing the gutter to the fascia board of the structure. The gutter punch can be a double throw or single throw device and enables perfect alignment of the front and rear mounting holes for gutters in an easily reproducible manner.

Abstract: In a method and apparatus for rotating loose laminations in a loose lamination die, a strip is fed through the die to a rotatable blanking chamber of a blanking station. There, a punch engages with a die ring to punch a lamination free from the strip. The rotatable blanking chamber is biased in an upwardly direction. When the punch is not engaging with the die ring, the rotatable chamber is in an upward position wherein a gap develops between laminations retained at a bottom of the rotatable chamber, and those laminations lying directly below the rotatable chamber. The rotatable chamber can then be rotated without damage to the laminations at the gap because of the presence of the gap. Thereafter, a succeeding lamination can be punched after the rotation has occurred. As the punch engages the strip on top of the die ring, the rotatable chamber is pushed downwardly so that the gap at the bottom of the rotatable chamber disappears.

Abstract: In a method and apparatus for rotating loose laminations in a loose lamination die, a strip is fed through the die to a rotatable blanking chamber of a blanking station. There, a punch engages with a die ring to punch a lamination free from the strip. The rotatable blanking chamber is biased in an upwardly direction. When the punch is not engaging with the die ring, the rotatable chamber is in an upward position wherein a gap develops between laminations retained at a bottom of the rotatable chamber, and those laminations lying directly below the rotatable chamber. The rotatable chamber can then be rotated without damage to the laminations at the gap because of the presence of the gap. A finger joint having an upper and lower portion is provided below the rotatable chamber which permits the gap to develop when the rotatable chamber is biased in the upward direction.

Abstract: A method for selectively relieving sharp edges in tools used in die cutting web or sheet-type work material which includes providing a machining apparatus for supporting the tool thereon, where the machining apparatus includes a rotary cutter mounted thereon and moveable relative to the tool. The method also includes providing a controller having machine readable shape data corresponding to at least one of the tools stored therein, and operating the controller to determine, responsive to the stored shape data, locations of edge segments defined by the tool against which the work material will impinge as the work material is advanced onto the tool in a first direction.

Abstract: A female blanking die for a die cutting machine for die cutting and/or blanking a carton blank, as well as a male blanking die/female blanking die combination, and methods of producing them, and elements constituting essential integers thereof, are all provided herein. The male blanking die/female blanking die combination includes a specifically-configured male stripping die. Such male stripping die includes a template having a particularly-specified perimeter, the template including a plurality of foam plastic pads which are removably secured to the undersurface of the template, the template being accurately secured at a predetermined position to the underface of a movable upper plate of the blanking station of the die cutting machine. The male blanking die/female blanking die combination also includes a specifically-configured female blanking die.

Abstract: A precision punch and die device for punching holes in a ceramic substrate and method of assembling the device. The device comprises a punch which moves relative to a substrate for punching a hole in the substrate and a die assembly including one or more precision die plates and support plates for guiding a punch and punching a substrate.

Abstract: A novel method and apparatus for producing an endless flexible seamed belt using a punch and die is disclosed. The punch and die have patterned edges in the form of a puzzle cut pattern with extremely small nodes and kerfs. The cutting tolerances of the patterned edges make it necessary to fix the punch with respect to the die so that there is no misalignment of the punch and die between cutting operations. This is accomplished by resiliently fixing the punch to the die, rather than having the punch attached to the force generating assembly as in normal punch and die assemblies. Belt material is positioned between a stock gap between the punch and die and the force generating assembly is activated to provide the cutting force. Once the belt material is cut, the cutting force is removed and the force generating assembly returns to its retracted position. There are two cutting edges on the punch and die so that a first end of one belt and a second end of another belt are formed in a single cutting operation.

Abstract: A novel method and apparatus for producing an endless flexible seamed belt using templates is disclosed. A first form of the template is a mask template with a template aperture in the form of a puzzle cut pattern to be used in combination with an excimer laser. The template is placed between the excimer laser source and the belt material to be cut. As the excimer laser traverses the width of the belt, the laser forms a puzzle cut pattern on the belt. A second form of the template is a punch and die having patterned edges in the form of a puzzle cut pattern with extremely small nodes and kerfs. The cutting tolerances of the patterned edges make it necessary to fix the punch with respect to the die so that there is no misalignment of the punch and die between cutting operations. This is accomplished by resiliently fixing the punch to the die, rather than having the punch attached to the force generating assembly as in normal punch and die assemblies.

Abstract: A punch and die tool for cutting a slug from a sheet of material that is retained in the opening of the die and does not adhere to or follow the punch on its upward stroke, and a method for retaining a slug in a die, are disclosed. The die is formed with one or more irregularities or grooves on the edge of the die face so that the slug cut by the operation of the punch and die will have a burr on its edge. The burr causes the slug to lodge in the inside surface of the die and prevents the slug from following the punch on its upward stroke.

Abstract: A novel method and apparatus for producing an endless flexible seamed belt using templates is disclosed. A first form of the template is a mask template with a template aperture in the form of a puzzle cut pattern to be used in combination with an excimer laser. The template is placed between the excimer laser source and the belt material to be cut. As the excimer laser traverses the width of the belt, the laser forms a puzzle cut pattern on the belt. A second form of the template is a punch and die having patterned edges in the form of a puzzle cut pattern with extremely small nodes and kerfs. The cutting tolerances of the patterned edges make it necessary to fix the punch with respect to the die so that there is no misalignment of the punch and die between cutting operations. This is accomplished by resiliently fixing the punch to the die, rather than having the punch attached to the force generating assembly as in normal punch and die assemblies.

Abstract: A novel method and apparatus for producing an endless flexible seamed belt using templates is disclosed. A first form of the template is a mask template with a template aperture in the form of a puzzle cut pattern to be used in combination with an excimer laser. The template is placed between the excimer laser source and the belt material to be cut. As the excimer laser traverses the width of the belt, the laser forms a puzzle cut pattern on the belt. A second form of the template is a punch and die having patterned edges in the form of a puzzle cut pattern with extremely small nodes and kerfs. The cutting tolerances of the patterned edges make it necessary to fix the punch with respect to the die so that there is no misalignment of the punch and die between cutting operations. This is accomplished by resiliently fixing the punch to the die, rather than having the punch attached to the force generating assembly as in normal punch and die assemblies.

Abstract: A multi-purpose hydraulic press, metal bending, and log splitting apparatus is disclosed. An hydraulic ram, having a piston cylinder for extending and retracting a piston rod driven by an hydraulic power means, is rigidly affixed to an elongated I-beam frame member, the central portion of which spans a throat area bounded on one side by the hydraulic ram and on the opposite side by a rigidly attached foot plate. The foot plate is formed of a planar steel member affixed perpendicularly to the frame member, and forms a ram extension penetration orifice within the plane of the plate in a position aligned with the piston rod. A series of functional inserts are included for placement against the foot plate or piston rod. A series of functional extension elements are also included for placement against the piston rod for extension through the ram extension penetration orifice.

Abstract: A stamping die produces gears or other parts having quality tooth forms or the like from smooth edged metal blanks. A lower portion of the die includes a trim punch, whose perimeter shape corresponds to the shape of the desired part, and a vertically moveable stripper plate surrounding the trim punch and having a recess for aligning the blank. An upper portion of the stamping die is vertically moveable with respect to the lower portion, and includes a trim die. The trim die has a bore disposed therein complementary to the trim punch. A nest plate is affixed to the underside of the trim die, and has a tapered nest opening that aligns with the die bore. A controllably biased shedder passes through the bore and opening. During operation, a blank is first placed in the recess. A press ram subsequently descends, with the blank becoming sandwiched between the shedder and the trim punch, with a portion of the blank to be trimmed being left unsupported.

Abstract: A novel method and apparatus for producing an endless flexible seamed belt using a punch and die is disclosed. The punch and die have patterned edges in the form of a puzzle cut pattern with extremely small nodes and kerfs. The cutting tolerances of the patterned edges make it necessary to fix the punch with respect to the die so that there is no misalignment of the punch and die between cutting operations. This is accomplished by resiliently fixing the punch to the die, rather than having the punch attached to the force generating assembly as in normal punch and die assemblies. Belt material is positioned between a stock gap between the punch and die and the force generating assembly is activated to provide the cutting force. Once the belt material is cut, the cutting force is removed and the force generating assembly returns to its retracted position. There are two cutting edges on the punch and die so that a first end of one belt and a second end of another belt are formed in a single cutting operation.

Abstract: A punch unit, in particular for making a punch for the binding comb of a ring binding is set-up of a circular shaped blade 1 and a counter die 19. The circular blade 1 is rotatably beard concerning an axis of rotation 27. At the circumference of the blade 1 cutting elements 2 are arranged. This cutting elements 2 raise over a fictive rolling circle 21. The surface of the counter die 19 is arranged perpendicular at the distance of the rolling circle radius rw, to the axis of rotation 27 of the circular blade 1 and show one or several opening in which in each case intervenes at least one cutting element 2 of the circular blade 1.

Abstract: Disclosed is a flex die punching apparatus for forming an aperture in at least one sheet of material. There is a flexible, extrudable platen which, upon exertion of a force against it, extrudes at least a portion of at least one sheet of material through an aperture of a die. The flexible, extrudable platen may have a punch feature, corresponding to the shape and position of the die aperture, which assists in the extruding of the flexible, extrudable platen through the die aperture and also in the formation of the aperture in the sheet of material. In another embodiment of the invention, there may be a second die wherein the at least one sheet of material is placed between the first and second dies to form the aperture in the sheet of material.

Abstract: Disclosed is a method of manufacturing a casing for an electronic equipment, the casing having a rib of a predetermined height and an insertion hole formed inside the rib in the width direction. The manufacturing method comprises the steps of preparing a molded article having a rib of a predetermined height and a concave portion positioned inside the rib in the width direction, the concave portion having a bottom wall portion, allowing a concave portion supporting die having a punch insertion hole formed therein to be engaged with the bottom portion so as to fix the molded article, and moving a punch from a side opposite to the bottom portion of the molded article engaged with the concave portion supporting die so as to punch the bottom portion positioned inside a punch insertion hole and, thus, to form an insertion hole.

Abstract: An apparatus cuts a substrate having first and second portions, each portion having a respectively different level. A first support surface is located at a first level. The first portion of the substrate is supported by the first support surface. A second support surface is located at a second level different from the first level. The second portion of the substrate is supported by the second support surface. The first and second support surfaces are first and second die surfaces, respectively. A punch cuts the substrate between the first support surface and the second support surface. The punch has a V-shaped cross section. A stripper plate has first and second portions. The punch is positioned between the first and second portions of the stripper plate. The first portion of the substrate is clamped between the first portion of the stripper plate and the first die surface. The second portion of the substrate is clamped between the second portion of the stripper plate and the second die surface.

Abstract: A precision punch and die device for punching holes in a ceramic substrate and method of assembling the device. The device comprises a punch which moves relative to the substrate for punching a hole in the substrate and a die assembly including one or more precision die plates and support plates for guiding the punch and punching the substrate.

Abstract: Disclosed is a flex die punching apparatus for forming an aperture in at least one sheet of material. There is a flexible, extrudable platen which, upon exertion of a force against it, extrudes at least a portion of at least one sheet of material through an aperture of a die. The flexible, extrudable platen may have a punch feature, corresponding to the shape and position of the die aperture, which assists in the extruding of the flexible, extrudable platen through the die aperture and also in the formation of the aperture in the sheet of material. In another embodiment of the invention, there may be a second die wherein the at least one sheet of material is placed between the first and second dies to form the aperture in the sheet of material.

Abstract: An apparatus for sticking a film to a lead frame has a punch moving up and down for punching a film, a die for placing the film to be punched, and a heating plate for heating a lead frame. A punched film with a predetermined shape is applied on the lead frame and thermally compressed and adhesively attached on a lead portion of the lead frame. The die is additionally provided with a buffer layer on the top plane of the die for relaxing compressing stress but increasing tensile stress put to the film at the punching step so that a punched film is prevented from producing cracks on the cutting end thereof.

Abstract: Pin insertion holes 25, and 26 are adjustable relative to each other and are arranged such that one is on a die holder 6 which is mounted on an alignment plate 7 of a lower turret 2 and the other one is on the alignment plate 7 itself. A mounting pin 11 is inserted through the die holder 6 and through both pin insertion holes 25, 26. This mounting pin 11 is capable of increasing and decreasing in diameter when inserted in the pin insertion holes 25, 26. The mounting pin 11 is charged with a pressure medium 22 such as oil or the like and this diameter increase is carried out by the pressurization of the pressure medium 22 by the screwing of a pressure application screw 23 or the like.

Abstract: Disclosed is a flex die punching apparatus for forming an aperture in at least one sheet of material. There is a flexible, extrudable platen which, upon exertion of a force against it, extrudes at least a portion of at least one sheet of material through an aperture of a die. The flexible, extrudable platen may have a punch feature, corresponding to the shape and position of the die aperture, which assists in the extruding of the flexible, extrudable platen through the die aperture and also in the formation of the aperture in the sheet of material. In another embodiment of the invention, there may be a second die wherein the at least one sheet of material is placed between the first and second dies to form the aperture in the sheet of material.

Abstract: A tool retention apparatus for retaining a cutting tool in a tool holder which has a wedged shaped securing arrangement to hold the cutting tool against a pair of precision ground supports. The securing member provides both a vertical securing force and a radial location of the cutting tool to facilitate installation and removal of the cutting tool from a machine.

Abstract: A method of cutting, slicing or perforating photographic imaging elements using certain cutting tools is disclosed. The cutting tool material includes zirconia and yttria at a molar ratio of yttria to zirconia from about 0.5:99.5 to about 5:95. The cutting tool is essentially a tetragonal crystal phase grain for the interior in a surface of cubic crystal phase grain or monoclinic crystal phase grain. This provides a hard, tough outer surface with a tough core. The cutting tool material can also be a composite of zirconia-alumina with or without surface modification.

Abstract: The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold member. The movable key travels along an inclined path as the mold members close on a preheated thermoplastic sheet to form a container.

Abstract: A method of shearing a thin metal sheet having a thickness of approximately 0.1 mm or less so as to be separated into a product and scrap by a pair of dies. A chamfer or a round having a size of approximately from 5 to 10 times greater than the thickness of the thin metal sheet is arranged at the lip of a first die which presses one portion of the thin metal sheet which is to be scrap. A chamfer or a round is not substantially arranged at the lip of a second die which presses the other portion of the thin metal sheet which is to be a product. A backing material and the thin metal sheet are overlapped so as to be a laminate. The backing material has a thickness of approximately 2 times or more greater than that of the thin metal sheet and is formed of a flexible material having a very small elongation and is soft enough not to substantially prevent the thin metal sheet from being sheared, such as, for example, paper.

Abstract: A die assembly for driving a pierce nut which comprises an annular coining portion provided on the top of a die body, the inner surface of the annular coining portion being continuous with a center aperture of the die body. An annular projection is provided at the upper portion of the center aperture for surely and temporarily holding punched debris in of the die body, near the annular coining portion, the center aperture. It is therefore possible to provide an inexpensive nut-driving die assembly with improved durability, and which can prevent debris, punched by shearing between a pierce nut and a metal panel and remaining at the upper portion of the center aperture, from being lifted up when the metal panel is lifted from the die body, thereby ensuring a continuous driving work.

Abstract: A stamping and forming machine positively prevents slug pulling by stripping the slug off of the end of the punch as the punch is being withdrawn from the die opening after a blanking operation. This is accomplished by providing a die insert support in supporting contact with the die insert having an opening that is identical to the opening in the die insert, but that is rotationally or laterally displaced therefrom by a small amount. As the punch pushes a slug through the opening in the die insert, the slug encounters the displaced opening in the die insert support and is shifted slightly as it is forced into that opening by the punch. As the punch is withdrawn from the die insert opening, the shifted slug cannot return through the opening and is stripped off of the end of the punch.

Abstract: A stamping and forming machine is disclosed having two operating modules, each of which has a unique scrap removal system. The machine includes a punch assembly and a mating die assembly that reciprocate horizontally toward and away from each other for performing stamping and forming operations. The die assembly includes a die plate having openings for mating with punches in the punch assembly, a die backup plate having scrap receiving openings, and a ram for effecting the reciprocating motion. An adapter is disposed between the die backup plate and the ram and is carried thereby. Horizontally disposed openings are formed in the adapter in corresponding alignment with the scrap receiving openings. Vertically disposed openings are formed in the bottom surface of the adapter and extend upwardly to intersect the horizontal openings. A conveyer is arranged vertically under these vertically disposed openings and leads to a position outside of the machine.

Abstract: The present invention contemplates an outfeed lift ramp (24) for use with a male (19) and female (18) combination of blanking dies for separating a diecut paper box blank (21) from an attendant web portion (20). Outfeed lift ramp (24) is appended to the leading edge (33) of female die member (18) adjacent to blanking through holes (32) at preselected points corresponding to a series of naturally occurring or benign box blank slots (31). During the blanking operation, the diecut and partially stripped sheet (17) is interposed over the die through holes and the upper arcuate portion of the lift ramp (38) extends through the through slots (31) of the sheet to be blanked thereby permitting the sheet to lie flush against the female die surface. After blanking, box blanks 21 are forced through female die through holes (32) and all that remains on the female die surface is a flexible and flimsy web (20).

Abstract: A first tool assembly includes a punch holder assembly and a circuit board clamp and a second tool assembly includes a die for receiving punches held and driven by the punch holder assembly. A circuit board has holes formed by the punches and is clamped by the clamp to the die. The circuit board and die are aligned to the punch assembly by an alignment pin secured to the punch assembly operated independently of the operation of the punch assembly. The punch assembly and the clamp are independently controlled by actuators with a convex distortion of the punch assembly and clamp during punching to provide an improved clamping and punching action.

Abstract: The object of the invention is to reduce the number of the producing processes of an IC lead frame.In the present invention, a plurality of punches 17 are provided protruding from the base 16 in such a manner that their surfaces are disposed approximately radially, and the reinforcing punch 23 which connects the cutting blades 18 of the punches 17 with each other, is provided between the cutting blades 18, and protruding from the base 16.The punches 17 are integrated by the reinforcing punch 23, so that the strength of each punch 17 is improved and the number of punched holes in one process can be increased.

Abstract: Stamping die for use with a punch to produce holes in strip material with the resulting production of a slug has a camming rib in the die opening. The rib prevents slug pulling when the punch returns from its extended position to its retracted position. The camming rib causes the slug to become wedged in the die opening and is effective to move the slug laterally in its own plane across the leading edge of the punch thereby overcoming any surface tension or other forces which might cause the slug to adhere to the face of the punch. The camming rib can be straight and extend parallel to the axis of the die opening if the die opening is not tapered. If the die opening has a slight taper, the camming rib is inclined thereby to cause movement of the slug across the face of the punch as the punch moves into the die opening.