Abstract: The present disclosure relates to a duct cutting and forming apparatus for elbow duct manufacturing machine, the apparatus including a rotation housing that is provided with a seating groove in a first direction; an eccentric housing that is provided with a cutting roller and a forming roller at both ends, and that is slidably seated inside the seating groove; a rotation drive for applying rotation driving force to the rotation housing; and an eccentric drive for applying driving force for reciprocating the eccentric housing, wherein the eccentric drive reciprocates the eccentric housing as it rotates in both directions within a range not exceeding 180 degrees.

Abstract: A tool for forming an attachment pad on a sheet material includes an anvil supported on a housing and defining a working axis for forming the pad. A slide block is supported on the housing for movement at least along the working axis, and a die block is supported opposite the slide block and is movable in directions along the working axis to cooperate with anvil to form the pad. At least one actuator on the housing biases the slide block in a direction toward the die block. The actuator is operable in a first mode wherein the slide block is movable toward and away from the die block, and a second mode wherein the slide block is locked against movement in a direction away from the die block. A selectively adjustable counterbalance device cooperates with the actuator to counterbalance a force applied to the slide block by the actuator.

Abstract: A notching tool for notching a workpiece, the notching tool having a notching punch and a die having an inner surface. The notching punch includes first and second punch portions, the first punch portion has a punch plane intended to hit the workpiece in a notching operation. The second punch portion protrudes from the punch plane in a direction which is substantially perpendicular to the punch plane, and is intended to contact the inner surface of the die when the notching punch hits the workpiece. The disclosure further provides a use of this notching tool and a method of notching which involves the operation of such a notching tool.

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: A selection plate (39) is provided on a punch device (1) for activating or deactivating individual punch holding bars (13, 14). The plate has a coupling device (40) associated with a positive-locking coupling between a punch holding bar (13, 14) and the selection plate (39). Associated with the positive-locking coupling is an edge of the selection plate (39), that is provided with a recess (42), an extension (43) of the punch holding bar (13, 14) that extends around said edge, and/or a rib (41), which is located on the underside of the selection plate (39) and is associated with the punch holding bar (13, 14). As a result, it is possible to selectively establish or eliminate a positive-locking connection between the punch holding bar (13, 14) and the selection plate (39). Via the rib (41), the punch stroke of the selection plate (39) is merely transmitted to the punch holding bar (13 or 14), which is in positive-locking engagement with the lateral edge or the projections of the selection plate (39).

Abstract: A sheet metal punching apparatus 1 includes: an upper die holder 2 which is raised and lowered by a hydraulic ram and the like; a pressing plate 3 secured to the upper die holder 2; a pressing pad 5 suspended from the upper die holder 2 through a resilient member 4; a punch holder 7 secured to the pressing pad 5; a lower die 9 on which sheet metal 8 to be subjected to punching is placed; and a die 10 embedded in the lower die 9.

Abstract: A sheet punching device includes a first blade, a first die into which the first blade is fitted from a first surface of a sheet to form a punch hole in the sheet, a second blade, and a second die into which the second blade is fitted. The second blade is inserted into the punch hole formed by the first blade from a second surface of the sheet and fitted into the second die.

Abstract: A tool is disclosed, for use with a punching press for punching holes in workpieces. A punch body is provided, elongated in an axial direction. A first punch head is formed on an end of the punch body, and has a first radial diameter, perpendicular to the axial direction. A second punch head has a second radial diameter, also perpendicular to the axial direction. The second punch head is substantially spaced from the first punch head. A neck is formed between the first and second punch heads, having a uniformly tapered diameter less than the first and second radial diameters.

Abstract: A method and apparatus for forming attachment pads in an inner body panel for the precise attachment of an outer body panel thereto. The apparatus positions a fixed anvil at a predefined net reference position while a face plate simultaneously “finds” the panel and is mechanically locked into position. Thereafter, the apparatus forms the inner body panel between a forming die and the fixed anvil. The face plate maintains the location of the surface metal around the die, resulting in the formation of a raised pad the outermost surface of which is at the predefined net reference position. A single such apparatus can form raised pads having different predefined net reference positions for different attachment locations. A reciprocating punch having a variable stroke length selectively provides either a hole or a slot in the raised pad.

Abstract: An improved cutting fixture for heat-shrink film sleeve labeling machines comprised of a mounting frame disposed around the outer periphery of the center guide post in a sleeve labeling machine that secures a plurality of blade assemblies at equal intervals apart. Each blade assembly is positioned on a drive plate by means of an inserted eccentric shaft to maintain synchronous operation. The eccentric shafts of the blade assembly are driven into reciprocal rotation by a power structure, each eccentric shaft causing the blades at their lower extents to alternately project and retract for cutting heat-shrink film at a required travel and time to effectively shorten the period involved and thereby increase production efficiency. Each cutter shaft is restrained by a check plate and anchoring screws to prevent 360-degree free rotation, which not only results in safer blade replacement, but at the same time also prolongs the service life of the transmission and structural components.

Abstract: To manufacture orifice disks, polygonal workpieces are prefabricated and oblique holes are punched successively by positioning the polygonal workpieces in different angular positions between lateral stops on an inclined bearing surface of a fixed punch die. The workpiece is removed after punching a hole, arranged in the following angular position and positioned between the lateral stops in order to punch the following hole. The removal and positioning of the workpiece in different angular positions is repeated to provide the required arrangement of punched holes. A device for manufacturing orifice disks includes a punch, lateral stops, and an inclined bearing surface of a fixed die. Accordingly, the series production of orifice disks of multiple-orifice nozzles for fuel-injection engines is accomplished.

Abstract: A piercing apparatus for forming partially overlapped small holes in upper and lower layers of lining material includes upper and lower piercing stands having piercing members affixed thereto respectively. The upper and lower piercing members have engaging cut-out portions corresponding to a shape of the overlap desired between the holes. When holes are formed for a first layer of lining material, the material is positioned between upper and lower stands mounting the piecing members and the lower piercing member is driven up to cut-out the shape of the opening for the first layer except for the overlap area. Then as the lower piercing member is driven up further, the leading edge of its cut-out portion engages the trailing edge of the corresponding cut-out portion of the upper piercing member. At this time the shape of the overlap portion is cut from the first layer of lining material.

Abstract: A film re-shaping device for orienting and re-shaping the end of a filmstrip in a desired configuration having, a base, an alignment post mounted on the base, an elongated metal lower die plate with an guide hole for positioning the die plate over the alignment post, formed in the desired end-of-filmstrip configuration, a film guide mounted on the die plate for aligning an edge of the filmstrip, a film edge spring for keeping the filmstrip against the film guide, a spring loaded roller attached to the base for bearing on the filmstrip and flattening the filmstrip against the die plate surface, and an elongated metal upper punch plate having an guide hole for positioning the punch plate over the alignment post and aligning the plates accurately with each other, formed at the film re-shaping end in the desired end-of-filmstrip configuration, whereby the filmstrip is captured between the upper and lower plates, is described.

Abstract: In contrast to typical machines though, the present invention discloses a device which allows the plate to "float" within the mechanism, so that any inaccuracies in dimensional tolerances between plate and knife are absorbed in a damping of the plate or bed of the mechanism. In this situation, the depth of the cut of the score line can be very reliably controlled, which results in the repeatable manufacturing of a child resistant, yet senior effective package. There is used a spring pre-load for this plate, which is such that cutting takes place yet, as the tool closes, the plate and package come in "metal to metal" contact, assuring "near perfect" cuts of the blister package. Extremely high tolerances are maintained, assuring packages which pass all levels and types of QA testing.

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 punch comprises peripheral cutting edges and lateral cutting edges. The peripheral edges cut a slug in the desired shape, for examples, rectangular, square, oval, trapezoidal, D and double D-shaped, etc. while the lateral edges cut transversely from one peripheral edge to an opposite peripheral edge, thereby splitting the slug. Lateral cutting edges provide a dividing line across the working face. Surfaces and cutting edges on each side of the dividing line are similar and canted at opposite angles. Lateral cutting edges and peripheral cutting edges at their juncture provide pyramidal cutting sections which initially pierce the workpiece and initiate lateral slug splitting. This split grows from the slug periphery toward the center. Splitting is complete before a substantial portion of the slug periphery is cut.

Abstract: An improved punching tool having a long wearing characteristic and characterized in having at least first and second punching edges disposed on the leading end of the punch body wherein these punching edges are separated by an annular groove and wherein the trailing punching edge is slightly smaller in diameter than the leading punching edge.

Abstract: The punch includes a working end with multiple working surfaces of special configuration to reduce the force required to effect punching and improve stripping action from the workpiece.

Abstract: A male punch member is disclosed for use with a female die member to remove a slug in two pieces from a sheet metal workpiece. The working end of the punch member is specially configured to enable punching and splitting of a slug into two pieces from a wide range of materials such as 10-gauge, type 304 stainless steel while providing acceptable punch life.

Abstract: A method of producing a stator yoke of a motor such as an inner rotor type stepper motor, the yoke having a multiplicity of polar teeth. The method has the steps of forming an intermediate blank which has an outer cylindrical portion and an inner cylindrical portion projecting in the same direction, effecting a shearing on the outer peripheral surface of the inner cylindrical portion to cut out a multiplicity of polar teeth arranged at a constant pitch, and effecting a punching to deepen and widen portions between the bases of adjacent polar teeth.

Abstract: A tool assembly for use with a prime mover, such as a bench press, to prepare a flat cable for its termination in a mass termination connector. The assembly includes upper and lower supports, at least one of which is adapted for attachment to the prime mover, for reciprocal movement relative to one another. The assembly further includes punch means carried by one of the supports, cutter means carried by one of the supports and selectively operable stop means for limiting relative movement of the supports. The punch means forms a series of windows in the cable insulation between adjacent conductors of the flat cable, the windows being aligned in a row extending transversely of the longitudinal direction of the cable. The cutter means severs the conductor of the flat cable adjacent the windows. The punch means extends further toward the support which does not carry the punch means than the cutter means extends toward the support which does not carry the cutter means.

Abstract: Apparatus for use with a pair of thermoplastic strips of the type illustrated in U.S. Pat. No. 3,608,117 wherein one strip is formed with studs longitudinally spaced at intervals and a second strip apertured and counterbored at the same intervals is used to bind sheets apertured at the same intervals at locations spaced inward from one marginal edge is described. A pressure bar is first manually moved to operative position and a handle compresses the strips together by exerting a controlled force on the pressure bar. The handle then initiates movement of a support for a knife consisting of a length of metallic ribbon material having spaced horizontal stretches in horizontal alignment with excess stud lengths of the first strip projecting through the second strip, the ribbon being under tension to hold such stretches taut. As the support moves toward the studs a current is passed through the ribbon, heating it so that the ribbon functions to cut off the excess stud length slightly below the second strip.