Abstract:
In a resonating assembly, a beam having a pickup thereon is positioned proximate to a magnet which passes across the pick up at a predetermined frequency. The passage of the magnet across the pick up establishes an alternating magnetic field that in turn causes the beam and pick up to vibrate. A blade is mounted on the beam and vibrates therewith so that when the blade is brought into engagement with a layer of sheet type work material the vibratory amplitude of the blade causes the blade to cut through the material as it is moved in engagement therewith.
Abstract:
In an apparatus for cutting pattern pieces and creating apertures in sheet-type work material a frame has a support surface mounted thereon for carrying at least one layer of the work material. A carriage is coupled to the frame for movement back-and-forth there along a first coordinate direction in response to commands issued from a controller. A cutting head is mounted to the carriage and moves in a second coordinate direction along the carriage approximately perpendicular to the first coordinate direction. A rotary die is coupled to the cutting head and at least one cutting tool is mounted to the rotary die. The cutting tool includes a shaped cutting portion corresponding to the shape of an aperture to be formed in the work material. During operation the rotary die is movable between a working position wherein the cutting tool engages the work material and a non-working position wherein the rotary die is positioned away from the work material.
Abstract:
A progressive plotter (10) for working on successive segments of an elongated web of sheet material (P) extending across a work surface (14) has a pen (24) supported to move in marking relation to material (P) on the work surface (14) in response to command signals received from a programmable controller. The machine includes a supply roll (20) for paying-off sheet material (P) and a take-up roll (22) for receiving material (P) from the supply roll (20). Each roll (20,22) has a cylindrical tubular cardboard roll core (C) extending throughout its axial length. The rolls (20,22) are supported by flanged hub assemblies (12), each including a cylindrical hub member (48) having a rough generally cylindrical peripheral surface (54) and a diameter smaller than the inside diameter of the smallest roll core (C) to be supported by the machine. The hub members (48) rotate in rolling engagement with the inner peripheral surfaces of the roll cores (C) to drive and/or support the rolls (20,22). Each hub assembly (12) has an axially inwardly open recess (60) defined by the hub member (48) and its associated flange (50) for receiving an end portion of a roll core (C) which extends beyond the radially disposed end face of the sheet material (P) wound thereon.
Abstract:
A dancer bar (42) including a plurality of segments (60,74) flexibly linked together is provided. Preferably, the segments (60,74) are selectively connectable to provide a dancer bar (42) having a length which substantially equals the width of an associated web (22) of sheet material. A sheet material feed mechanism (25) including the segmented dancer bar (42) and an apparatus (10) for performing a work operation on sheet material including the feed mechanism (25) are also provided.
Abstract:
In a resonating assembly, a beam having a pickup thereon is positioned proximate to a magnet which passes across the pick up at a predetermined frequency. The passage of the magnet across the pick up establishes an alternating magnetic field that in turn causes the beam and pick up to vibrate. A blade is mounted on the beam and vibrates therewith so that when the blade is brought into engagement with a layer of sheet type work material the vibratory amplitude of the blade causes the blade to cut through the material as it is moved in engagement therewith.
Abstract:
A progressive plotter (10) for working on successive segments of an elongated web of sheet material (P) extending across a work surface (14) has a pen (24) supported to move in marking relation to material (P) on the work surface (14) in response to command signals received from a programmable controller. The machine includes a supply roll (20) for paying-off sheet material (P) and a take-up roll (22) for receiving material (P) from the supply roll (20). Each roll (20,22) has a cylindrical tubular cardboard roll core (C) extending throughout its axial length. The rolls (20,22) are supported by flanged hub assemblies (12), each including a cylindrical hub member (48) having a rough generally cylindrical peripheral surface (54) and a diameter smaller than the inside diameter of the smallest roll core (C) to be supported by the machine. The hub members (48) rotate in rolling engagement with the inner peripheral surfaces of the roll cores (C) to drive and/or support the rolls (20,22). Each hub assembly (12) has an axially inwardly open recess (60) defined by the hub member (48) and its associated flange (50) for receiving an end portion of a roll core (C) which extends beyond the radially disposed end face of the sheet material (P) wound thereon.
Abstract:
A dancer bar (42) including a plurality of segments (60,74) flexibly linked together is provided. Preferably, the segments (60,74) are selectively connectable to provide a dancer bar (42) having a length which substantially equals the width of an associated web (22) of sheet material. A sheet material feed mechanism (25) including the segmented dancer bar (42) and an apparatus (10) for performing a work operation on sheet material including the feed mechanism (25) are also provided.
Abstract:
In a resonating assembly (30, 130, 230), a beam (34, 134) having a pickup (36, 136) thereon is positioned proximate to a magnet (46, 146) which passes across the pick up at a predetermined frequency. The passage of the magnet across the pick up establishes an alternating magnetic field that in turn causes the beam and pick up to vibrate. A blade (48, 148) is mounted on the beam and vibrates therewith so that when the blade is brought into engagement with a layer of sheet type work material (16) the vibratory amplitude of the blade causes the blade to cut through the material as it is moved in engagement therewith.
Abstract:
A computer-controlled machine and variations thereof are disclosed for cutting shapes of material with a cutting tool, including a sensor for sensing or estimating a knife offset during cutting to provide feedback for reducing cut shape error caused by the knife being offset from its ideal position. An exemplary embodiment includes a proximity sensor, a knife, such as a reciprocating knife, and circuitry and/or computer readable instructions for separating the output signal of the proximity sensor into a tangent signal corresponding to the tangent offset and a normal signal corresponding to a normal offset. The reciprocating knife can include a temperature sensor which is positioned to measure the temperature of the reciprocating knife near the point of contact between the knife and the material being cut. The temperature sensor is preferably a non-contact temperature sensor such as an infrared thermometer which operates under the principle of measuring thermal radiation emitted from an object.
Abstract:
In a resonating assembly (30, 130, 230), a beam (34, 134) having a pickup (36, 136) thereon is positioned proximate to a magnet (46, 146) which passes across the pick up at a predetermined frequency. The passage of the magnet across the pick up establishes an alternating magnetic field that in turn causes the beam and pick up to vibrate. A blade (48, 148) is mounted on the beam and vibrates therewith so that when the blade is brought into engagement with a layer of sheet type work material (16) the vibratory amplitude of the blade causes the blade to cut through the material as it is moved in engagement therewith.