Plural Cutting Steps Effect Progressive Cut Patents (Class 83/49)
  • Patent number: 5701251
    Abstract: A blank-figure constructing method for sheet metal work, wherein a cutting passage planned to sequentially cut a plurality of desired blanks from a sheet material is determined, utilizing a multiple figure composed of the figures of the plurality of blanks to be obtained, in the multiple figure of which the adjacent line segments of the single blank figures are combined. This method is that if the multiple figure has an even number of, four or more odd vertices at each of which an odd number of internal and external line segments of the multiple figure meet, an auxiliary line is drawn outside the multiple figure, connecting any two of the odd vertices on the outline of the multiple figure to make the total number of odd vertices be two or zero so that the cutting passage, which passes through all the internal, external line segments and auxiliary line of the multiple figure, can be determined.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: December 23, 1997
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Yukio Yoshimura
  • Patent number: 5689986
    Abstract: A plurality of successively spaced notches are formed in a side edge of a metal strip by first and second adjustably positionable dies prior to roll forming of the strip to a formed configuration. After roll forming, fingers engage selected edges of the notches to detect a notch length dimension and a full part length dimension. Sensors detect the position of the fingers and generate output signals to a controller which generates an adjustment signal based on the switch conditions to adjustably position the first and second dies to accommodate any elongation of the metal strip during roll forming.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: November 25, 1997
    Inventor: John F. Jacobs, Jr.
  • Patent number: 5691032
    Abstract: A method of making a bird repellant structure includes the steps of punching into a continuous base strip a plurality of diagonal slots, cutting into the continuous base strip at least one finger extending from each of the diagonal slots such that a leading end of each finger is formed by a portion of the diagonal edge of each respective slot, and thereafter, punching a plurality of repellant arms into the continuous base strip. The repellant arms extend longitudinally from each diagonal slot such that a leading end of each repellant arm is formed by the diagonal edge of each diagonal slot and includes the fingers cut therein.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: November 25, 1997
    Assignee: Jack B. Shaw
    Inventors: Terry L. Trueblood, Timmy J. Trueblood
  • Patent number: 5506013
    Abstract: A resilient solid foam object which has a part of its outer surface scribed with a series of connected cuts. These cuts communicate with the interior of the foam object. The cuts are arranged to allow the foam object to be turned inside out and are shaped to form a three dimensional structure within the solid foam object. The three dimensional object is displayed upon turning the solid foam object inside out. Also described is a method for making these novel foam objects.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: April 9, 1996
    Inventor: Yuris E. Lesnik
  • Patent number: 5499566
    Abstract: In a follow-up slotting tool for continuously punching workpiece (W) fed between a punch (3) and a die unit (5) at a predetermined pitch, the punch (3) is formed with a shear angle (.alpha.) at a lower end surface thereof in such a way that a front end of the punch is cut into the workpiece but a rear end thereof is not cut into the workpiece when lowered at a predetermined downward stroke; and the die unit (5) is provided with a counter member (15) for raising a residue (W.sub.A) partially cut away from the workpiece, after the punch has been lowered at the predetermined downward stroke, and with a cutting edge (21) for cutting off the partially cutaway residue (W.sub.A) raised by the counter member in cooperation with the punch, when the punch is lowered at the succeeding predetermined downward stroke.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: March 19, 1996
    Assignee: Amada Metrecs Company, Limited
    Inventors: Shigeru Endo, Fumitaka Sugizaki
  • Patent number: 5493771
    Abstract: An open mesh material for use as a high performance RF reflective antenna surface and which is formed as a Leno type weave using electrically conductive composite yarns which have a construction for avoiding loose metal-to-metal contacts which generate undesirable passive intermodulation products (PIM). The composite yarns are formed by counter-wrapping stretch resistant nonconductive strands about an insulated metal strand and a stretch resistant nonconductive filler yarn. The insulated metal strand preferably includes a beryllium-copper wire which is encapsulated within a polyamide coating. The woven mesh is coated with a RF energy transparent silicone-based paint to provide additional insulation to the plastic coated wires at the weave junctions and has a surface resistivity sufficiently low to facilitate bleed off of building electro-static charges.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: February 27, 1996
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventors: Ajit K. Sinha, Sandra L. Tang
  • Patent number: 5490326
    Abstract: So-called "retrofitting" of old style fluorescent lighting fixtures is carried out in a punch and die press provided with a special punch and die assembly having guide blocks positioned laterally of the punch and die for receiving pre-existing notches flanking the unnotched portion of the notched edge margin of a so-called "trougher raceway" strip portion of the old fluorescent lighting feature to be retrofitted, the punch of which assembly has cutting edges configurated for piercing the metal work strip backwardly of the notched edge thereof and at the ends of a longitudinal cut to be made and at the back ends of mutually spaced lateral end cuts to be made and for executing severing stokes along such cutting edges and thereby cutting out and removing a slug of metal exactly conforming in shape and dimension to the pre-existing guide notches.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: February 13, 1996
    Inventor: Lyman O. Nielson
  • Patent number: 5488888
    Abstract: A tamper indicating closure comprising a base wall and a peripheral skirt having an internal thread adapted to engage the threads of a container wherein a tamper indicating band is provided on the skirt by a plurality of circumferentially spaced bridges. The band includes portions adapted to engage an annular bead on the container. The bridges are formed by using a primary knife having an interrupted cutting edge to produce a circumferential score in the side wall of the closure leaving spaced connectors or bridges followed by using a secondary knife having a continuous cutting edge to provide a continuous external score line and an accurately dimensional radial thickness of the bridges. In a preferred method and apparatus, the closures engage the successive primary and secondary knives and are moved such that the closures roll relative to the knives.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: February 6, 1996
    Assignee: Owens-Illinois Closure Inc.
    Inventor: Timothy B. Kowal
  • Patent number: 5461954
    Abstract: A method of feeding portions of wrapping material, cut off a continuous strip, to a packing line, which method, for feeding each portion, includes stages consisting in making in the strip at least a first partial transverse cut by means of a first fixed blade cooperating with a movable blade; and in making in the strip at least a second partial transverse cut, aligned longitudinally with the first partial transverse cut and completing detachment of the portion, by means of a second fixed blade cooperating with the movable blade; the strip, in the course of making the second partial transverse cut, being drawn by feed elements not involving the strip portion in which the second partial transverse cut is to be made.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: October 31, 1995
    Assignee: G.D Societa' Per Azioni
    Inventors: Silvano Boriani, Alessandro Minarelli
  • Patent number: 5404778
    Abstract: A guide for use in cutting carpet and a method of joining two portions of cut carpet in edge-to-edge relationship has a base formed as a lower portion and an upper portion interengaged through a longitudinal slideway and presenting an upper ramp surface. The upper portion has a longitudinal channel along which a knife blade can pass to cut a carpet portion laid on the ramp. The lower portion has a vertical wall vertically below the channel and against which the cut edge of first carpet portion is located to abut during cutting of the second carpet portion on the ramp so that when the guide is removed the two cut edges will fall into edge-to-edge abutment for joining together.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: April 11, 1995
    Assignee: Duralay Limited
    Inventor: Jonathan Ward
  • Patent number: 5400682
    Abstract: A method of side-cutting by a turret punch press for improving working efficiency to a large extent. The method comprises a step in which a selected one (5.sub.1) of a plurality of punch chips (5.sub.1 to 5.sub.4) arranged so as to be selectively hit in a punch assembly (1) provided on the upper turret (2) is used for side-cutting a workpiece (6) and the other step in which one end of a part to be cut into a punching piece with the side cutting is cut off by another punch chip (5.sub.2).
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: March 28, 1995
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Satoshi Matsuura
  • Patent number: 5367928
    Abstract: The backbones of successive stacks of signatures of a series of such stacks are trimmed by a rotary implement having two annuli of substantially radially extending orbiting trimming or cutting tools. The tools of one annulus extend radially outwardly beyond the tools of the other annulus, and the tools of one annulus extend axially forwardly beyond the tools of the other annulus. The tools which extend axially forwardly beyond the other tools orbit at a higher speed. The two annuli of tools can be orbited in the same direction or in opposite directions.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: November 29, 1994
    Assignee: Grapha-Holding AG
    Inventors: Peter Geiser, Rolf Zangerle
  • Patent number: 5315905
    Abstract: A method and apparatus for shaping a solid antiperspirant stick composition. The antiperspirant composition is produced in a generally cylindrical form having an oval or elliptical cross-section and the method and apparatus disclosed herein form the exposed end of the stick into a domed shape. A shaping mechanism comprises three shaped and heated cutting edges, each of which is arcuately oscillated with respect to the end of the stick within the plane of the major axis of the oval or ellipse. One pre-cut cutting edge is oscillated in one direction and makes a cut partially into one side of the exposed end of the stick. Rough cut and finish cut cutting edges are then arcuately passed through the end of the stick in the opposite direction.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: May 31, 1994
    Assignee: Bristol-Myers Squibb Company
    Inventor: Jiva R. Karavadra
  • Patent number: 5301587
    Abstract: Method of cutting a three-dimensional shaped piece of a material having large pores out of a block by trimming the block with adjacent cuts of a predetermined width guided along planes extending tangentially to the surface of the shaped piece whereby scrap of the material is produced, and cutting kerfs into the scrap no later than the trimming along planes extending radially relative to the shaped piece surface and longitudinally substantially parallel to each other, the cutting planes being spaced from each other at the shaped piece surface a maximum distance corresponding to the predetermined width of the adjacent cuts. For this purpose, an ultrasound assembly may be used, which comprises a knife which has a shaft portion extending in the direction of vibration of the knife and a cutting portion attached to the shaft portion and extending transversely to the direction of vibration, the shaft portion and the cutting portion having cutting edges.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: April 12, 1994
    Assignee: GFM Gesellschaft fur Fertigungstechnik und Maschinenbau Aktiengesellschaft
    Inventor: Gottfried Blaimschein
  • Patent number: 5216614
    Abstract: In a machine and method for automatically cutting a length of sheet work material segment-by-segment to separate two dimensionally shaped pieces from it, registration between lines cut in adjacent segments is enhanced by the use of X and Y coordinate sensors carried by the X beam of the machine and having X and Y wheels respectively rotatably engaging the top surface of the work material to detect displacement changes between the X beam and the work material in the X and Y coordinate directions which detections are used to slave the advancement of the X beam to the advancement of the work material and to provide X and Y coordinate offset adjustments to the X and Y sets of control signals used to drive the cutter head in the X and Y coordinate directions during the cutting of the next segment of the work material.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: June 1, 1993
    Assignee: Gerber Garment Technology, Inc.
    Inventors: Richard Kuchta, Joseph R. Vivirito, Kevin A. Pearl
  • Patent number: 5214590
    Abstract: In the bite-by-bite cutting of a length of sheet material split points for pattern pieces extending between adjacent bites are assigned to bite overlap regions containing sheet material capable of being cut at the cutting station either before or after a given advancement. A method is further given for optimally locating the split points within the bite overlap regions so as to best avoid problems caused by slit notches, V-notches, sharp corners or other discontinuities located close to the split points.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: May 25, 1993
    Assignee: Gerber Garment Technology, Inc.
    Inventor: John F. Schnetzer
  • Patent number: 5172474
    Abstract: A method of cutting a ring seal, so that the ring seal may be transversely installed over a coaxial element, involves using a cutting tool to cut the seal radially and circumferentially. The cut surfaces overlap in intimate contact and maintain intimate contact to inhibit leakage between the cut surfaces when the ring seal radially expands. The cut surfaces are helicoid, each characterized by a radial generatrix that is constantly perpendicular to the axis of the seal.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: December 22, 1992
    Assignee: Charleron Enterprises, Inc.
    Inventor: Ronald C. Kurkowski
  • Patent number: 5134911
    Abstract: In the case of the cutting of a line in a quantity of sheet type work material where the cutting is interrupted before the line is completely cut, with the cutting tool being removed from the material at the point of interruption and later brought back into cutting engagement with the material at that point, complete and clean cutting along the desired line of cut is assured despite the interruption by ending the first cut which ends at the interruption point so that is continues slightly beyond that point along an end path and by starting the second cut along a start path which starts behind the interruption point so that the end path and start path overlap one another along a region of the desired line and by crossing each of the end and start paths with a line of cut to assure complete separation from one another of the portions of the material located on opposite sides of the desired line.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: August 4, 1992
    Assignee: Gerber Garment Technology, Inc.
    Inventors: Theodore J. Busky, Robert J. Pomerleau
  • Patent number: 5044238
    Abstract: A cutting and punching apparatus for sheet material, designed to be movably mounted on an automatic cutting machine, having a cutting tool and a punching tool, wherein said apparatus comprises means for vibrating said cutting tool, means for vertically displacing said cutting tool, means for rotating said cutting tool, means for sharpening said cutting tool, means for vertically displacing said punching tool, means for rotating said machine tool, and a supporting base on which are grouped in a compact manner all said means, which means being operable both simultaneously and independently of each other.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: September 3, 1991
    Assignee: Lectra Systems
    Inventors: Jean Etcheparre, Bernard Etcheparre
  • Patent number: 5042339
    Abstract: In a method and apparatus for cutting sheet material wherein the material is cut in bites or segments by bringing in stepwise fashion successive lengthwise segments to a cutting station incomplete cutting of a line or pattern piece when the line or pattern piece is continued from one segment to another is avoided by a retracing of the line of cut in the vicinity of the line's or pattern piece's transition from one segment to another. Therefore, when the cutting tool, following the advancement of the material to bring a fresh segment to the cutting station, is returned to the vicinity of a previously cut point it retraces a portion of the previously cut line to promote complete separation of the desired material from the waste material despite possible relaxation or other shifting or mispositioning of the material between the times of the cutting tool's first and second arrivals at the transition point.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: August 27, 1991
    Assignee: Gerber Garment Technology, Inc.
    Inventor: H. Joseph Gerber
  • Patent number: 5029502
    Abstract: The present invention is drawn to a method an an apparatus for cutting a sheet member embedded with wires for use in tire, having the following characteristics. That is, a wire-embedded member is cut with a rotatable cutter at the middle of the member in a width-wise direction thereof while applying a pushing force, effected by a high pressure, on the cutter. The cutter is shiftably and rotatably mounted on a frame so as to be movable in a shifting direction while rotating. The cutter movement may also deviate in a direction orthogonal to the shifting direction thereof. The completion of the cutting at the middle of the member is detected by an electrical connection between the cutter and a support member, which connection is confirmed by a confirmation control mechanism. The cutter is shifted by a pushing mechanism from the middle to one side edge of the sheet member under a pushing force, effected by a pressure lower than that of the high pressure, so as to carry out a first half of a cutting operation.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: July 9, 1991
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventor: Nobuhiko Irie
  • Patent number: 5025609
    Abstract: A sheet separator device for side-by-side parallel sheet articles being handled and conveyed in sheet handling machines comprises first and second endless belt arrangements for conveying sheet articles in nips between belts, wherein first and second belt arrangements are divergently disposed in relationship to one another so that sheet articles entering respectively thereinto in a common plane in side-by-side parallel relationship are conveyed thereby along respective divergent paths. Sheet articles exiting from divergent first and second endless belt arrangements, respectively, are farther conveyed in a common plane along side-by-side parallel paths which are separated by a larger distance than the original distance between sheet articles entering the first and second endless belt arrangements.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: June 25, 1991
    Assignee: Bell & Howell Phillipsburg Co.
    Inventors: James R. Moser, Gerald D. Warden, Thomas E. Bieber
  • Patent number: 5019314
    Abstract: A process for die cutting a sheet of thermoplastic material imprintd with information or data of limited spatial displacement therebetween wherein the data is sequentially die cut in alternating rows and lines in a plurality of registered die cutting stations until all such pieces have been die cut generally in like sizes or pieces and wherein each piece is in residual attachment to the sheet of thermoplastic material.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: May 28, 1991
    Assignee: Almetek Industries, Inc.
    Inventor: Albert A. Burlando
  • Patent number: 4991478
    Abstract: The excess covering material is trimmed from a workpiece using a blade assembly having side by side blade segments with cutting edges aligned with the contour to be cut. A rubber roller applies a longitudinal cutting force to the blade segments in sequential fashion by rolling across the blade segments ends opposite the cutting ends. The blade segments are returned to the noncutting position by a tension wire threaded through a notch in the shaft of each of the blade segments. Cutting pressure is adequate to cut through at least three layers of covering material without scoring the substrate. The rubber roller provides certain resiliency which helps control the cutting pressure.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: February 12, 1991
    Assignee: Reflex Trim, Inc.
    Inventor: Wayne F. Riley
  • Patent number: 4981058
    Abstract: An apparatus and a method are disclosed, in which a shear and die set is adapted to be used in a numerically-controlled turret punch press for separating adjacent portions of a workpiece along predetermined parting lines, the shear and die set having a lower shearing or cutting edge on a vertical side of the shear portion of said set which is reciprocated vertically in shearing proximity to an upper cutting or shearing edge of a vertical wall of the die portion of said set, so that only a partial shear is effected for any reciprocation, and advancing the workpiece during the reciprocation so that a stepwise cut is effected along the entire length of said predetermined parting line and separation of the workpiece along said predetermined parting line is obtained.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: January 1, 1991
    Assignee: Lear Siegler, Inc.
    Inventor: Andrew G. Gavrun, III
  • Patent number: 4957026
    Abstract: A food preparation appliance for cutting generally spherical food items into two portions, with the complimentary cut edges being of a fanciful design. The appliance adjustably supports the food item with respect to a cutting head, such that the cutting head may be moved toward and into the food item to cut it at a desired location. A drive mechanism is provided to rotate the food item in response to the cutting head being moved toward the food item, after being retracted therefrom, such that successive cuts will normally form a continuous cut around the food item to separate the food item into two portions, each of which has a fanciful cut edge.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: September 18, 1990
    Inventor: Jack R. Butterbaugh
  • Patent number: 4945796
    Abstract: The present invention is a method for removing material from a sheet of material with a press having a movable upper platen, a stationary lower platen, and a cutting tool secured to the upper platen. The method includes the steps of establishing a reference point at the surface of the material with the cutting tool and moving the upper platen and cutting tool away from the lower platen a predetermined distance once the reference point is established. The steps also include moving the upper platen and cutting tool toward the lower platen the predetermined distance plus a percentage of the thickness of the material to displace material to be cut with the cutting tool. The steps further include repeating the latter two steps a plurality of times until the material to be cut is removed from the remainder of the material.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: August 7, 1990
    Inventor: Wayne F. Riley
  • Patent number: 4945795
    Abstract: An apparatus for cutting soft sheetlike material, such as a fabric material, which is subject to elongation due to effect of tensile force. The apparatus has a driving device for supplying a layered severable material in an intermittent step-like manner from an upper position to a lower position. A cutting device cooperates with the layered severable material, when in a stationary vertically-suspended condition, for forming cutting lines of basic configuration therein along the elongate direction thereof, with such cutting lines being repeatedly formed following each advancing step of the material to create cutting lines which extend substantially continuously along the severable material. Devices are also provided for removing non-wanted portions of the severable material so as to leave only the essential portion. The severable material includes, superimposed sheets of flexible soft material and thin flexible backing, which sheets are separated and independently wound following the cutting step.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: August 7, 1990
    Assignee: Kokusan Kogyo Kabushiki Kaisha
    Inventor: Hideo Tone
  • Patent number: 4934237
    Abstract: The invention relates to a severing appliance for dividing especially deep-frozen fish. The severing appliance consists of several disc-shaped severing blades 3 which are arranged parallel and next to one another above the supporting surface 6 of a platform 1 and the peripheral margin 5 of which is arranged at such a short distance from the supporting surface 6 that the blocks 15 fed by forward-pushing means 16, 17 are for the greater part severed, with the exception of thin webs 19. For the severing of the webs 19, the severing blades are followed by severing elements 8 arranged in a stationary manner and perfectly aligned with the severing blades 3. Even in blocks of differing local hardness, such an appliance carrying out the severing operation in two stages ensures faultless transport of the severed smaller units.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: June 19, 1990
    Inventor: Heinz Nienstedt
  • Patent number: 4916990
    Abstract: So that the path (BB, V1 to V7) for a rotable polygonal punching tool (WZ) can be determined easily, the workpiece contour (K), the dimension of the tool (x, y), the position of the axis of rotation (x/2, y/2) and the sense of direction of the machining are set by the operator into a numerical control (ST). An equidistant track (BB) is therefrom determined by the control (ST), such as is customary for milling operations. This track (BB), however, is corrected in the vicinity of corner of the workpiece contour (K) by the control (ST) in such a manner that punching optimized with respect to distance and time and with high contour fidelity is made possible.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: April 17, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stefan Dolansky, Guenter Broemer, Volker Reetz
  • Patent number: 4869141
    Abstract: A punch press has a ram assembly with a lower portion which is rotatable and reciprocatable about a vertical axis and, a die holder which is rotatable about the same axis. A gear mechanism is coupled between a drive motor and the lower portion of the ram assembly and the die holder to effect simultaneous rotation thereof, which effects reorientation of the tooling relative to the X and Y axes of the punch press. In this fashion, rotation of the tooling will enable a single set of tooling to effect cutouts of different orientation in a workpiece relative to the X and Y axes, and movement of the sheet material along the X and Y axes together with such rotation of the tooling enables complex configurations to be nibbled or cutout with a limited number of sets of tools.
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: September 26, 1989
    Assignee: Trumpf GmbH & Co.
    Inventor: Hans Klingel
  • Patent number: 4858505
    Abstract: A means and method for applying a stabilizer ply to a tire building drum and more particularly a means and method for cutting and applying the stabilizer ply material and specifically means for cutting the stabilizer ply material between cords disposed therein and correcting for variations of the cord angles during the application process in order to provide an improved splice between the leading and trailing edges of the stabilizer ply material.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: August 22, 1989
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Donald O. Still, Hubert T. Hovance, George J. Burley
  • Patent number: 4841826
    Abstract: A method and apparatus for shaping a solid body of soft material wherein the body is notched on one side, a rough cutter moves inwardly through the other side of the body to enter the closed end of the notch and sever body material without breaking, and a finish cutter than removes relatively little material to produce a finish cut.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: June 27, 1989
    Assignee: Precision Automation Co., Inc.
    Inventor: John Smith, III
  • Patent number: 4819529
    Abstract: A method, and in particular an automatic method, of cutting parts out from sheet or plate material, the method comprising the steps of: placing templates (1, 2) having the shapes and sizes of the said parts upon said sheet or plate of material; recognizing the respective shapes, sizes, orientations, and positions of the templates on the material by means of distinctive signs characteristic of the shapes and sizes of the respective templates; and cutting out parts from said sheet or plate material along outlines defined by said templates; the method including the improvement of a further step in which any overlaps (3) between templates are detected and the lines of cut where the templates overlap are modified either by cutting along a straight line (6) interconnecting the points of intersection (4, 5) between the outlines of the overlapping templates, or by cutting along an average line (9) equidistant from the outlines of the templates between the points of intersection of the outlines of the overlapping temp
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: April 11, 1989
    Inventor: Jean-Marc Loriot
  • Patent number: 4796498
    Abstract: A method for dimple free guillotine cutting of multiple wall tube which involves first cutting a transverse notch substantially completely through the outermost tube wall and secondly cutting a notch through the path of the first notch but of greater depth to extend partially through the innermost tube wall. The cutoff function is then finalized by means of a guillotine blade which enters through the coextensive notches. Both pull-across and thrust blades for carrying out the method are disclosed.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: January 10, 1989
    Assignee: Alpha Industries, Inc.
    Inventor: John J. Borzym
  • Patent number: 4787282
    Abstract: A method and apparatus for forming planar parts (WA) by progressively punching out the shape of the part (WA) from a piece of sheet material (W) in which the part (WA) is automatically removed from the remaining sheet material (W), by a hinged trap door section (37) in a work supporting table (33), one end lowered to form a chute. The punching process is carried out primarily in a first punching station (A), where punch and die set magazines (18, 19) may be mounted, but connecting sections (WC) are left to be removed in a second punching station (B) where the trap door section (37) is located. The separated parts (WC) are deposited on a conveyor system (36) located beneath the table 33, and detector unit (59, 61) enables shut down of the press if a part fails to move after each punching operation.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: November 29, 1988
    Assignee: The Warner & Swasey Company
    Inventors: Kenji Okachi, Sadaharu Ishihara
  • Patent number: 4785696
    Abstract: A method and apparatus for presenting a serial succession of cut sheet portions to a work station. The sheet portions are cut from a continuous webbing which is processed by a cutting station and a web-breaking station. The cutting station partially severs the web downstream of its leading free end so as to define a first sheet portion between that free end and the point of cutting, with the first sheet portion connected to the web by one or more tab connectors. The webbing is then advanced downstream to the tab-breaking station where the tabs are broken to free the first sheet portion for independent movement further downstream. A vacuum belt engages the webbing, and particularly the downstream edge adjacent the partial severing, with a vacuum belt. The vacuum belt engages the webbing by bridging the partially-severed cut portion, so as not to interfere with the downstream tab-breaking apparatus.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: November 22, 1988
    Assignee: Kraft, Inc.
    Inventor: Michael L. Martiny
  • Patent number: 4785695
    Abstract: The excess covering material is trimmed from a workpiece using a blade assembly having side by side blade segments with cutting edges aligned with the contour to be cut. A rubber roller applies a longitudinal cutting force to the blade segments in sequential fashion by rolling across the blade segments ends opposite the cutting ends. The blade segments are returned to the noncutting position by a tension wire threaded through a notch in the shaft of each of the blade segments. Cutting pressure is adequate to cut through at least three layers of covering material without scoring the substrate. The rubber roller provides ceertain resiliency which helps control the cutting pressure.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: November 22, 1988
    Assignee: Reflex Trim, Inc.
    Inventor: Wayne F. Riley
  • Patent number: 4771663
    Abstract: To eliminate defects such as burr, rollover, sags, scar, etc. from cut-off surfaces of a workpiece in a turret punch press, for instance, a novel height-different punch formed with a lower front edge, an upper rear edge, and an intermediate edge extending between the two edges is used for the punch press. While feeding the workpiece on a horizontal plane in a predetermined direction, the punch is struck by a striker at a first stroke so that the lower front edge thereof cuts off the workpiece partially in cooperation with a die; at the succeeding strokes so that the intermediate edge thereof cuts off the workpiece mincingly and curls refuse within a recess of the die; and at the last stroke so that the upper rear edge thereof cuts curled refuse away from the workpiece to complete a multistroke punching operation.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: September 20, 1988
    Assignee: Amada Company, Limited
    Inventors: Kinshiro Naito, Yoshio Imamura
  • Patent number: 4738173
    Abstract: A method for shearing a plate-like workpiece using a punch press includes providing a punch having two adjacent blades disposed at a specified angle with respect to one another and a die having two blades corresponding to the blades of the punch. The punch and die are adjusted so that one of the blades on one of the punch and die will not mate with the corresponding blade on the other of the punch and die, and the other blade on one of the punch and die will mate with the corresponding blade of the other of the punch and die. The punch and die are brought together to shear the workpiece between the mating, corresponding blades of the punch and die. In one embodiment the blades of the punch are fixed on the base of the punch so as to be fixed with respect to one another. In a second embodiment, the punch is divided into two parts by a sliding surface which bisects the specified angle between the blades of the punch, so that the blades of the punch are longitudinally slidable with respect to one another.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: April 19, 1988
    Assignee: U.S. Amada Limited
    Inventor: Yoshinori Kiuchi
  • Patent number: 4726804
    Abstract: A method and apparatus for fabricating continuous envelopes for use in connection with electronic data processing printers or the like is disclosed. The method and apparatus includes the steps of severing an advancing web along longitudinally spaced-apart transverse lines to provide straight completely severed segments and a non-severed medial segment. In a distinct step, the web is severed along non-linear lines adjacent to the transverse lines, with each non-linear line including a severed longitudinal segment and a severed bridging segment which extends in an oblique direction between the transverse line and the outer end of the associated longitudinal segment to provide a generally triangular cut-out which, when both are removed, yields an envelope backing panel having a tapered closure flap.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: February 23, 1988
    Assignee: Wesley Business Forms
    Inventor: Robert S. Stitcher
  • Patent number: 4715847
    Abstract: Blanks (10) for producing folding boxes, etc., are severed from an advancing sheet (11), conveyed continuously, at a constant speed by first drawing rollers specifically by partial severing cuts (cutting lines 33, 34) supplementing one another and made in successive work cycles. The blanks (10) are severed from the sheet (11), with the exception of residual connections (35), and are separated completely from the sheet (11) by tearing as a result of a higher speed of additional drawing roller located downstream of the first rollers.
    Type: Grant
    Filed: January 3, 1986
    Date of Patent: December 29, 1987
    Assignee: Focke & Co.
    Inventors: Heinz Focke, Jurgen Focke
  • Patent number: 4696211
    Abstract: A punch press has a punch support and die support which are rotatable about a common vertical axis, and a drive mechanism for rotating and effecting the reorientation of the tooling relative to the X and Y axes of the punch press. In this fashion, rotation of the tooling will enable reorientation of single cutting surface, and location of various of the differently contoured cutting surfaces at the desired cutting position to effect cutouts of different contours or angular orientation in a workpiece relative to the X and Y axes. The punch has a cutting portion which is of a cross section providing at least one arcuate cutting surface A.sup.1 defined by the radius R.sup.1 and at least one rectilinear cutting surface A.sup.2. In accordance with one embodiment, the punch tooling is desirably of elongated cross section with a length L in its elongated axis and a width W in its transverse axis which is less than 1/2 L.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: September 29, 1987
    Assignee: Trumpf GmbH & Co.
    Inventor: Hubert Bitzel
  • Patent number: 4674373
    Abstract: A punch press has a punch support and die support which are rotatable about a common vertical axis, and a drive mechanism for rotating and effecting the reorientation of the tooling relative to the X and Y axes of the punch press. In this fashion, rotation of the tooling will enable reorientation of a single cutting surface, and location of various of the distinctly contoured cutting surfaces, at the desired cutting position to effect cutouts of different contour or angular orientation in a workpiece relative to the X and Y axes. The punch has a cutting portion which is of a cross section providing at least two cutting surfaces of different contours with at least at least two arcuate cutting surfaces. In accordance with one embodiment, the punch is desirably of elongated cross section with a length L along its elongated axis and a width W in its transverse axis which is less than 1/2 L.
    Type: Grant
    Filed: October 16, 1984
    Date of Patent: June 23, 1987
    Assignee: Trumpf GmbH & Co.
    Inventor: Rudi Kuppinger
  • Patent number: 4671150
    Abstract: An apparatus and method for cutting a pipe into a multiplicity of small pieces are provided wherein the pipe is fed by rotating the pipe about its longitudinal axis and simultaneously moving the pipe in a direction generally parallel to the longitudinal axis of the pipe, and wherein individual pieces are sequentially cut from an end of the pipe as it is being fed.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: June 9, 1987
    Assignee: Phillips Petroleum Company
    Inventor: Michael R. Harris
  • Patent number: 4667553
    Abstract: A compact notching device comprises a single piston and cylinder assembly including a piston rod, a shaft axially and rotatably mounted within the piston rod, and means for longitudinally coupling the shaft to the piston rod such that when the piston rod reciprocates, the shaft reciprocates, means for attaching an instrument in fixed relation to the shaft, means for rotating the shaft and the instrument, and a presser foot assembly mounted in fixed relation to and carried by the piston rod or the shaft.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: May 26, 1987
    Assignee: Gerber Scientific, Inc.
    Inventors: Heinz J. Gerber, Claude LeBlond
  • Patent number: 4653365
    Abstract: A punching method and apparatus for forming through holes by punching in a ceramic green sheet for use as a material of a laminated substrate. Not only the positioning of the work but also the driving of the upper die set are conducted by of servomotors with the speed and timing of operation of the servomotors being controlled in accordance with a prestored program in a microcomputer, so as to attain a high speed and efficiency of operation. In addition, a hole clearing operation is conducted immediately after the punching so that the chip remaining in the punched through hole, if any, is forced out from the through hole by the same punch used in the punching operation.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: March 31, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuhiro Takasaki, Hiroya Murakami
  • Patent number: 4631997
    Abstract: A method and apparatus for simultaneously cutting a plurality of picture frame mats with picture display windows in a single operative procedure by initially arranging the mats in a reverse and inverted order and cutting them with an apparatus mounting a plurality of cutters, one for each mat, at an angle to the planes of the mats and thereafter separating and rearranging the mats to frame the picture in their desired picture frame array.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: December 30, 1986
    Inventor: David D. Sobel
  • Patent number: 4628783
    Abstract: A method of making a suction catheter having grooves and suction holes in the grooves is disclosed which includes the step of clamping a tube to effect a bulge and moving a knife longitudinally of the tube to skive the outer portion of the bulge to form a groove after clamping pressures are removed. Holes are formed in the bottom walls of the grooves. Skiving apparatus is disclosed which includes a clamping device for positioning and bulging a tube adjacent one end, and a knife relatively movable longitudinally of the tube to skive the bulge.
    Type: Grant
    Filed: December 19, 1984
    Date of Patent: December 16, 1986
    Assignee: Sherwood Medical Company
    Inventors: Richard G. Brownell, Sr., James L. Fehl
  • Patent number: RE34602
    Abstract: To eliminate defects such as burr, rollover, sags, scar, etc. from cut-off surfaces of a workpiece in a turret punch press, for instance, a novel height-different punch formed with a lower front edge, an upper rear edge, and an intermediate edge extending between the two edges is used for the punch press. While feeding the workpiece on a horizontal plane in a predetermined direction, the punch is struck by a striker at a first stroke so that the lower front edge thereof cuts off the workpiece partially in cooperation with a die; at the succeeding strokes so that the intermediate edge thereof cuts off the workpiece mincingly and curls refuse within a recess of the die; and at the last stroke so that the upper rear edge thereof cuts curled refuse away from the workpiece to complete a multistroke punching operation.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: May 10, 1994
    Assignee: Amada Company, Ltd.
    Inventors: Kinshiro Naito, Yoshio Imamura