Abstract: A shearing assembly and method of effecting shearing utilizing the same. Any tendency of further the edges of steel stock being cut to roll is eliminated by providing a male die cutting blade (which cooperates with a female die) having a pair of shelf members, one associated with each cutting blade side face, for engaging the edge of material being sheared during the shearing operation. An actuator element is operatively connected to the male die for moving the cutting blade in a given linear direction, the rolling preventing being accomplished by providing a control structure for positively controlling the length of the stroke of the actuator element and attached cutting blades so that at the limit of travel of the cutting blade in the given linear direction the shelf members are spaced apart from the female die a distance corresponding to the thickness of material being sheared. A plurality of die groups are mounted on a rotating wheel.

Abstract: A turret type punch press which has a plurality of strikers is disclosed. The punch press comprises a turret mechanism, a plurality of large-diametrical punches radially spaced along a main circular track of the turret mechanism, a plurality of small-diametrical punches spaced along a plurality of subtracks centering around points on the main circular track between every two adjacent large-diametrical punches, a main striker provided in the lower end of a ram to correspond with the large-diametrical punches and a plurality of substrikers provided circumferentially along the main striker to correspond with the small-diametrical punches. The main striker and the substrikers are selectively operated according to selection of the punches.

Abstract: A combined press for punching and cutting respectively trimming a plate-shaped workpiece comprises at least one punching tool including a punch reciprocable along an axis and a first dirve for reciprocating said punch, at least one cutting tool including a knife reciprocatably parallel to the punch and a second drive for reciprocating the knife, a main drive, and a transmission arrangement connected at one end to the main drive and selectively connectable to said first and second drive for reciprocating either said punch or said cutting knife.

Abstract: Centering and wear compensating means for turret bores and the like. Plugs of a suitable resilient, long wearing, self-lubricating material are equiangularly placed in bores of uniform length provided in the wall of a turret bore in which a tool holder is positioned. The plugs are made long enough to be compressed into the bores by the tool holder when the tool holder is centered in the turret bore and are spaced along the turret bore such that engagement of the plugs with the tool holder will be maintained as the tool holder is raised and lowered in the turret bore. The plugs are curved on one end to conform to the tool holder surface and are chamfered to permit easy compressibility as the tool holder is positioned in the turret bore.

Abstract: A slitter with a plurality of slitter heads mounted on a turntable to allow rotation of the heads. Each slitter head is adapted to be joined to a motor drive by means of an interconnecting arbor end portion which extends from the outboard bearing of the slitting head.

Abstract: A slitter having multiple spaced pairs of arbors carried upon a rotatable housing which is shiftable as a unit toward and away from a second housing which is adapted to support a selected pair of such arbors during the slitting operation.

Abstract: Apparatus for providing a supply of angle irons or like elongated members. A dispensing magazine includes a pair of side walls and a bottom wall, the magazine being pivotal about a horizontal axis for movement from a first operating position where the walls are generally vertical to a second loading position where the walls are generally horizontal. The angle irons in the vertical stack with the side walls in the first position are moved upwardly as the top angle iron is removed, so that the top angle iron in the vertical stack is always substantially at the same vertical level. An ejecting cylinder or the like is provided for pushing the top angle iron from the vertical stack off of the stack when the magazine is in the first position.

Abstract: A turret punch machine is disclosed having upper and lower turrets each equipped to carry a plurality of tools. The turrets carry a plurality of modules projecting from a central turret section in spoke-like fashion. The modules on the upper turret are each adapted to carry one or more punching tool assemblies and the modules on the lower turret are each adapted to carry one or more die tools. The modules are attached to and rotate with the turret by interfitting connections adjacent the modules' inner peripheries, the modules being easily detachable from the turrets to allow quick tool and/or module change.

Abstract: An assembly for automatically feeding workpieces to and from a numerically controlled turret punch. A loader magazine having an adjustable volume for receiving a stack of workpieces is disposed on one side of a turret punch, and an unloader magazine having a similar adjustable volume for receiving a stack of workpieces is disposed on the opposite side of the turret punch. An ejector associated with a loader magazine ejects the top workpiece from the loader magazine to horizontally feed it into operative association with clamps of the turret punch. The turret punch clamps are moveable with respect to the punching tools, and the punching tools are moveable and operated to effect punching of the workpiece until it has a desired finished configuration.

Abstract: A workpiece positioning assembly for a machine tool has first and second traverses mounted perpendicular to one another. The second traverse is unsupported at its ends and mounted intermediate its ends upon the first traverse for horizontal movement in a direction perpendicular to the axis of the second traverse. The second traverse has a carriage movable therealong for supporting a workpiece and effecting movement in a direction parallel to the axis of the second traverse. The workpiece positioning assembly is preferably applied to a punch press.

Abstract: A vent plate for supporting a finger having a rivet portion is disposed intermediate adjacent core laminations in a dynamoelectric machine. A plurality of finger members secured to the vent plate cooperate with the core laminations to define a ventilation duct for circulation of a cooling gas through the core. The vent plate has a plurality of slot openings arranged to receive the rivet portions of each finger. The vent plate slots are characterized by a bow-tie outline defined by intersecting planar and curved side surfaces which permits variable orientation of rivet portions through a predetermined angular range.

Abstract: A stamping or nibbling machine has upper and lower tool carriers, upper and lower tool magazines arranged respectively above and below the displacement range of a workpiece and rotatable about an axis of rotation which is substantially parallel to the longitudinal axis of movement of a male die in the upper tool carrier, tool carriers in each magazine, and a tool exchanger operable to move a tool from each magazine into a tool carrier and vice versa. All the tools in each magazine, except the tool to be exchanged, are arranged completely above and/or below the displacement range of the workpiece, and the tool to be exchanged is lifted by a lifting device, relative to its magazine, into a transfer plane for movement into the working position in the machine. All the tools in each magazine, except the tool to be exchanged, are covered by a cover plate , and the plates define the boundaries of the displacement plane of the workpiece and prevent engagement of the workpiece with tools in the magazines.

Abstract: A machine tool, such as a turret punch, having one or more individual tools positioned in a tool holder member attachable to the turret and easily removable therefrom whereby tools are changed by changing turret tool holder members rather than by changing the individual tool.

Abstract: A blanking die comprises a relatively thin die plate having a cutout into which the punch of the press, upon blanking operation, forces the material to be cut to form the required part blank. A holder of sturdy construction is provided onto which the thin die plate is removably mounted. Slidably positioned within the holder is a reciprocating support block which, upon blanking operation, underlies the thin die plate in order to reinforce it against the impact of the punch. After the blanking cycle, the support block is moved either to eject the part blank or to allow the latter to fall through an opening in the holder.

Abstract: A relatively rigid horizontally extending supporting surface supports a layup of sheet material to be cut. Air is evacuated from between the sheets in the layup, and a sheet of air impervious material covers the layup to aid in compacting the layup. One of several blanking dies in a turret is adapted for vertical movement in a carriage mechanism, which is movable in at least one coordinate direction across the layup. Relative movement in the other coordinate direction is also provided for, and the turret is rotatable on a vertical axis normal to the supporting surface for orienting the die to be used. The blanking die turret is also indexable about a horizontal axis in order to locate its various dies for the blanking motion and thereby minimize waste from the layup of sheet material.

Abstract: A rotary turret numerically controlled punch press is provided with a discharge station at 90.degree. from a punching station. A part is clamped in the turret, separated from a larger workpiece and then rotated with the turret to the discharge station. A transfer arm is slaved to the NC punch press and engages the part at an exact attitude and position relative to a reference point on the part and transfers the part to a rotary chuck. The part is placed in the chuck at an exact attitude and with the reference point at the axis of rotation of the chuck.Four rotary chucks are provided on a rotary turret contouring apparatus. The turret is rotated 90.degree. to position the part at a cutting station.A band saw is provided with rotary guides for changing the angle of the saw. While the part is rotated and linearly translated toward and away from the saw by the contouring apparatus, the saw cuts a peripheral shape on the path with the blade changing its angular attitude where necessary.

Abstract: Each chuck of the capstan is peripherally integral with a rim made from a relatively elastic material which defines, facing each indexing bore for the formation of a shock absorber/stop member, an orifice whose outlet cross-section is substantially the same as the inlet cross-section of the said bore and, in the vicinity of the indexing pin a cross-section which, at least in the direction of travel of the chuck, is larger than the cross-section of the end fitting of the said pin, each orifice having a sloping wall which converges towards the central area of the said chuck.The improvements forming the object of the invention are applicable to capstan tool holders for punching machines.

Abstract: A punch holder and stripper assembly is shown in which a punch holding body is provided with a reduced outer diameter boss section projecting therefrom terminating in an end face which has a bore opening thereinto which receives the punch, the punch projecting from the reduced diameter section of the holder and terminating in a punching face. An elastomeric stripper, preferably of a type of urethane rubber, is attached to and carried by the punch holder. The stripper has an inner diameter received around the reduced diameter portion of the holder and extending beyond the holder in radially spaced relationship with the projecting portion of the punch. The stripper either terminates adjacent the punching face or is equipped with an end cap terminating adjacent the punching face.

Abstract: A turret press has a bed on which a table is rotatably supported, there being a series of pairs of coactive tools supported on said table, each pair of tools including one tool which extends to the central portion of the table where the same is operatively connected to a power actuator which includes a cylinder which is slidable in a table bore and a piston having a rod directed downwardly for engaging a reaction surface.

Abstract: This disclosure relates to a punching apparatus for perforating sheet materials, and comprises a multiple tool holding unit mounted on a press table beneath a vertically movable press ram. The tool holding unit includes a horizontally extending upper arm having a horizontally swingably journalled holding member disposed at the free end thereof. The punch holding member is provided with a plurality of punch holding bores which may be selectively positioned beneath the press ram whereby holes of different diameter may be punched in the sheet material. The punching unit further includes a lower arm disposed beneath the horizontally extending upper arm, and includes a die holding bore having the configuration of two half circles connected with each other by two parallel lines running in the same horizontal direction as the lower arm and is further provided with a horizontally movable clamping member.

Abstract: The apparatus of the present invention comprises at least one hole-punching device operated by a pneumatic cylinder for driving a punch rod through the peripheral surface and radially to the center of a roll of roofing sheet material. The method of the invention provides for the steps of preparing the sheet roofing material, winding the sheet into a roll, and punching a plurality of perforation holes in the roll from the surface to the center thereof.

Abstract: A modification to an apparatus for trimming thermoplastic material surrounding the bordering edge of an article formed in a die or mold from a sheet of pliable thermoplastic material such as glass arranged over the die or mold which is supported by a mold or die carrier, such apparatus including a trimmer having a lower cutting edge and disposed above the die with the center of the trimmer in vertical axial alignment with the center of the die and cooperative with a trimming edge of the die when the trimmer is lowered for trimming of the article formed in the die. A pressurized hydraulic fluid cylinder vertically actuates the trimmer.

Abstract: A turret worktable for a turret punch machine tool with the table aligned adjacent to the top of the die turret, the dies extending below the table top. The top has a section thereof extending from an edge of the table to the edge of the lower die turret, which is pivotable through an arc from an operating position adjacent to the die turret and plainer with the remainder of the table to a die removal position located below and to the side of the dies in the lower die turret. The segment forms a worktable top when in the die changing position.

Abstract: A punching and nibbling press with a rotatable turret comprised by an upper and a lower horizontal plate vertically spaced apart, and each formed with housings which in the upper plate receive punch members and in the lower plate receive die members corresponding with the punch members. Each set of housings is arranged in a ring shaped array about the axis of rotation of the turret. The housings are of large, medium and small relative sizes so that large, medium and small punch members can be fitted in the respective housings in the upper plate, and large, medium and small die members in the housings in the lower plate. When at least one of the large punch members is not required and additional small punch members are needed, a large punch member is removed from its housing and is replaced by an intermediate member formed with two small housings to receive two small punch members.

Abstract: A rotary turret numerically controlled punch press is provided with a discharge station at 90.degree. from a punching station. A part is clamped in the turret, separated from a larger workpiece and then rotated with the turret to the discharge station. A transfer arm is slaved to the NC punch press and engages the part at an exact attitude and position relative to a reference point on the part and transfers the part to a rotary chuck. The part is placed in the chuck at an exact attitude and with the reference point at the axis of rotation of the chuck.Four rotary chucks are provided on a rotary turret contouring apparatus. The turret is rotated 90.degree. to position the part at a cutting station.A band saw is provided with rotary guides for changing the angle of the saw. While the part is rotated and linearly translated toward and away from the saw by the contouring apparatus, the saw cuts a peripheral shape on the part with the blade changing its angular attitude where necessary.

Abstract: A louver cutter comprising a body having a pair of spaced arms, the lower arm defining a base and the upper arm overlying the base. A lower die pad is rotatably mounted on the base for rotation about a vertical axis and is lockable in any adjusted position. A lower die block is fastened to the lower die pad such that the lower die pad has a portion projecting upwardly and spaced from the lower die block. A piston is slidable for vertical movement in said upper arm and means are provided for moving the piston toward and away from the lower die block. An upper die block is mounted on the piston and has an opening into which the piston extends. A fastener holds the upper die block on the piston. The upper die block has a vertical surface and a horizontal surface engaging the vertical and horizontal surfaces of a cutter blade.

Abstract: A puching press with a very strong main swanneck frame having an upper arm carrying a punching head equipped with an actuating slide, and a lower arm provided with an anvil. A rotary turret is provided with a plurality of punches engageable selectively with the actuating slide by rotation of the turret, and the turret is also provided with a plurality of punching dies each corresponding to a punch and locatable over the anvil by synchronous rotation with the punches. The turret is mounted on a second swanneck frame disposed outside of the slot of the first swanneck frame.