EP0872314B1 - Couteau et porte-couteaux pour un appareil de traitement de matériaux en feuille - Google Patents

Couteau et porte-couteaux pour un appareil de traitement de matériaux en feuille Download PDF

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Publication number
EP0872314B1
EP0872314B1 EP19980105974 EP98105974A EP0872314B1 EP 0872314 B1 EP0872314 B1 EP 0872314B1 EP 19980105974 EP19980105974 EP 19980105974 EP 98105974 A EP98105974 A EP 98105974A EP 0872314 B1 EP0872314 B1 EP 0872314B1
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EP
European Patent Office
Prior art keywords
cutting tool
outer casing
cartridge assembly
bore
end portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19980105974
Other languages
German (de)
English (en)
Other versions
EP0872314A1 (fr
Inventor
Brian D. Phelan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gerber Scientific Products Inc
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Gerber Scientific Products Inc
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Filing date
Publication date
Application filed by Gerber Scientific Products Inc filed Critical Gerber Scientific Products Inc
Publication of EP0872314A1 publication Critical patent/EP0872314A1/fr
Application granted granted Critical
Publication of EP0872314B1 publication Critical patent/EP0872314B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member

Definitions

  • the present invention relates generally to the cutting of sheet-type work material with X-Y sheet material cutting mechanisms, and deals more particularly with a cutter cartridge assembly mounted on such mechanisms for performing cutting operations on the sheet-type work material.
  • the most relevant state of the art is described in the introductory part of US 5 094 134-A and forms the generic part of claims 1 and 13.
  • Plotters are often used to cut graphic images from sheets of elongated work material.
  • the work material is fed longitudinally of itself through the plotter and under a tool holder carrying a cutting tool mounted on a support for movement across the sheet material's width.
  • a known cutting tool used to perform cutting operations of the type described herein is referred to by those skilled in the art, as a drag knife.
  • a drag knife consists of an elongated rotatable blade having a sharpened edge, supported in a housing which in turn is carried by the tool holder.
  • the drag knife engages the work material and is pulled or dragged along its surface by the tool holder in response to commands issued from a controller.
  • the sharpened edge of the blade must align itself with the direction in which the blade is being dragged. Accordingly, the blade must pivot about its longitudinal axis in response to changes in the cutting direction.
  • US 5 094 134-A describes in its introductory part a structure for rotatably holding a cutting tool in a cylindrical holder wherein movement of the cutting tool is supported by a pivot bearing installed at the bottom part in the cylindrical holder, and an O-ring disposed in a manner fitted to the cutting tool between two bearings fitted to the opening end in the cylindrical holder, and thereby holding the cutting tool.
  • This manner of holding supports the cutting tool in the direction of its axial line.
  • the present invention solves this problem by providing a cutter cartridge assembly for use with an X-Y sheet material cutting mechanism.
  • the cutter cartridge removably receives and holds, for rotation about its central axis, an elongated cutting tool having a sharpened cutting edge at a forward end portion inclined to, and having a tip point spaced from, the central tool axis.
  • the cutter cartridge assembly comprises an outer casing having first and second ends and an axial bore extending at least part way into the outer casing from the first end. At least two radial bearings are received within the axial bore and are spaced apart to thereby define a predetermined gap between them.
  • Each of the radial bearings includes an inner bearing race rotatable about the aforementioned central axis, and a bore for removably receiving the tool, such that the forward end portion of the tool protrudes from the casing.
  • a resilient annular member is positioned in the previously described gap and is compressibly in engagement with the inner bearing races, thereby exerting a force on each of the inner bearing races.
  • the cutter cartridge assembly includes means for adjusting the amount by which the cutting edge of a cutting tool extends from the outer casing.
  • the axial bore extends through the outer casing and a shaft having a knob portion and an end portion is adjustably received in the axial bore at the outer casing's second end.
  • Means carried by the end portion of the shaft engage an end of the cutting tool opposite the front end portion, such that rotation of the knob portion causes the cutter to extend or retract relative to the first end of the outer casing.
  • the aforementioned outer casing axial bore extends only part way into the outer casing from its first end, thereby defining a bottom surface.
  • a cap is threaded onto the first end of the outer casing adjacent to the two radial bearings described above.
  • the cap includes a reference surface and also defines a bore extending from the reference surface through the cap for receiving the front end portion of the cutting tool.
  • Means are carried by the bottom surface for engaging an end of the cutter opposite the cutting edge, such that rotation of the cap causes the cutter to extend or retract relative to the cap's reference surface.
  • a plotter there shown is used for performing work operations on a sheet-type work material 12.
  • the plotter 10 includes a drive (not shown) for feeding the work material 12 back and forth in a direction longitudinal of itself, through the plotter.
  • a tool holder 14 is pivotally and slidably mounted on a support 16 fixed to a frame 18, such that as the work material 12 is advanced, the tool holder can traverse the width of the work material 12 in response to commands issued from a controller 13.
  • a cutter cartridge assembly 20 carrying a cutter 22 is mounted on the tool holder 14 for movement between a lowered working position where the cutter is pressed against the work material 12, and a raised non-working position perpendicular to the work material.
  • the cutter cartridge assembly 20 includes an outer casing 24 having first and second ends 26 and 28 respectively, a central casing axis 30, and an axial bore 32 extending through the outer casing.
  • a bearing sleeve 34 defining a bore 36 is preferably pressed into the axial bore 32 from the first end 26.
  • a pair of radial bearings 38 and 40 are received in the bore 36 adjacent to the outer casing first end 26 and define a predetermined gap 42 between them.
  • a resilient annular member 43 preferably in the form of an O-ring is compressively positioned in the gap 42 and in engagement with the inner races 46 of the radial bearings 38 and 40, thereby urging the inner races of the bearings away from each other and preloading the bearings.
  • a third radial bearing 44 is also received in the bore 36 and is spaced apart from the pair of bearings 38 and 40. All of the radial bearings 38, 40 and 44 have inner bearing races 46 rotatable about the outer casing central axis 30, and define bores 48 for removably receiving and retaining an elongated cutting tool 22.
  • the cutting tool 22 has a forward end portion 52 sharpened to provide a cutting edge inclined to a central tool axis 54, a tip point 56 spaced away from the central tool axis, and an opposite end portion 57.
  • the above-described resilient annular member 43 defines an aperture 45 having an inner diameter for frictionally yieldingly engaging the cutting tool 22.
  • resilient annular member 43 is described above, as an O-ring, the present invention is not limited in this regard as other resilient annular members, such as, but not limited to springs, elastomeric washers, or gaskets may be substituted without departing from the broader aspects of the present invention.
  • the cutter cartridge assembly further includes a cap 58 having a reference surface 60 and defining a bore 62 extending from the reference surface through the cap.
  • the cap 58 is positioned over the bearing sleeve 34 adjacent to the pair of radial bearings 38 and 40, and abuts the first end 26 of the outer casing 24 with the forward end portion 52 of the cutting tool 22 received within the bore 62.
  • the preferred embodiment of the present invention also includes a shaft generally designated as 64, shown in FIG. 2, having a knob portion 66 defining a knurled outer periphery 68, and an opposite end portion 70 received in the axial bore 32 of the outer casing 24 at the second end 28, and defining a recess 72.
  • a ball 74 made of a suitable material, such as, but not limited to metal, is received in the recess 72 and engages the opposite end portion 57 of the cutting tool 22.
  • the second end of the outer casing 24 includes a peripheral surface 76 defining angular indicia 78 extending there around, and the knob portion 66 includes reference mark 80 alignable with the angular indicia 78.
  • the shaft 64 moves either up or down, depending on the direction of rotation, causing the ball 74 to engage or retract away from the opposite end 57 of the cutting tool 22, thereby extending or retracting the cutting tool forward end portion 52 relative to the reference surface 60.
  • the final position of the reference mark 80 relative to the angular indicia 78 indicates the amount by which the cutting tool 22 extends past the reference surface 60.
  • the outer casing axial bore 32' rather than extending from the first end 26' through the outer casing 24', extends only part way through the outer casing, thereby defining a bottom surface 82 against which abuts the bearing sleeve 34'.
  • the bottom surface 82 instead of the shaft 64, FIG. 2, defines the recess 72' for receiving the ball 74'.
  • An adjustable cap 84 is threadedly engaged with the first end 26' of the outer casing 24' and includes a reference surface 86 that defines a bore 88 extending from the reference surface through the cap, the forward end portion 52' of the cutting tool 22' being received within the bore.
  • the outer casing 24' also includes a peripheral surface 90 defining angular indicia 92 extending there around, and the adjustable cap 84 includes reference mark 94 alignable with the angular indicia 92.
  • the cap will move toward or away from the outer casing first end 26', thereby causing the ball 74' to engage or retract away from the opposite end 57' of the cutting tool 22', extending or retracting the cutting tool forward end portion 52' relative to the reference surface 86.
  • the final position of the reference mark 94 relative to the angular indicia 92 indicates the amount by which the cutting tool 22' extends past the reference surface 86.
  • the cutting tool 22 selectively engages the work material in response to commands issued from the controller 13. Since the work material 12 is being fed back and forth longitudinally of itself as the tool holder 14 traverses its width, the cutting path of the cutting tool 22 will vary causing the cutting tool to rotate in the radial bearings 38, 40, and 44 thereby aligning the sharpened edge with the direction of cut. In addition, the engagement of the annular resilient member 43 with the cutting tool 22 as well as the inner bearing races as described above, damps vibrations induced in the cutting tool 22 resulting from the tool's interaction with the work material 12.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Knives (AREA)

Claims (13)

  1. Ensemble de cartouche d'outil de coupe (20) destiné à une utilisation avec un mécanisme de coupe en X-Y de matériau en feuille et destiné à recevoir et maintenir de façon amovible, en vue d'une rotation autour de son axe central (54), un outil de coupe allongé (22) comportant une partie d'extrémité avant (52) affilée pour réaliser une arête tranchante inclinée par rapport audit axe d'outil central (54) et comportant une pointe d'extrémité (56) décalée par rapport audit axe d'outil central, ledit ensemble de cartouche comprenant :
    une enveloppe extérieure (24) comportant un axe d'enveloppe central (30), des première et seconde extrémités (26, 28), et un alésage axial (32) s'étendant au moins sur une certaine distance. dans ladite enveloppe extérieure (24) à partir de ladite première extrémité,
    au moins deux roulements radiaux (38, 40) reçus à l'intérieur dudit alésage axial (32) et définissant un espacement prédéterminé (42) entre ceux-ci, chacun desdits roulements radiaux (38, 40) comportant un chemin de roulement intérieur (46) pouvant être entraíné en rotation autour dudit axe central d'enveloppe (30) et comportant un alésage destiné à recevoir de façon amovible ledit outil de coupe (22), ladite partie d'extrémité avant dudit outil de coupe (22) dépassant de ladite enveloppe (24), et
    un élément annulaire élastique (43) positionné dans ledit espacement, caractérisé en ce que ledit élément annulaire (43) est en prise sous compression avec lesdits chemins de roulement intérieurs (46), en exerçant ainsi une force sur chacun desdits chemins de roulement intérieurs (46).
  2. Ensemble de cartouche d'outil de coupe (20) selon la revendication 1, caractérisé en outre par un manchon de roulement (34) positionné dans ledit alésage axial (32) et destiné à recevoir lesdits au moins deux roulements radiaux (38, 40).
  3. Ensemble de cartouche d'outil de coupe (20) selon la revendication 1 ou 2, dans lequel
       ledit élément élastique (43) définit une ouverture (45) présentant un diamètre intérieur en vue de se mettre en prise, avec un frottement peu résistant, avec ledit diamètre extérieur dudit outil de coupe (22).
  4. Ensemble de cartouche d'outil de coupe (20) selon l'une quelconque des revendications 1 à 3, caractérisé en outre par un moyen destiné à ajuster la quantité selon laquelle ladite partie d'extrémité avant dudit outil de coupe (22) dépasse de ladite première extrémité de ladite enveloppe extérieure (24).
  5. Ensemble de cartouche d'outil de coupe (20) selon la revendication 4, dans lequel ledit alésage axial (32) s'étend à travers ladite enveloppe extérieure (24) entre ladite première extrémité et ladite seconde extrémité, et dans lequel ledit moyen destiné à ajuster est caractérisé par :
    un arbre (64) comportant une partie de molette (66) et une partie d'extrémité opposée (70) reçue de façon ajustable dans ledit alésage axial au niveau de ladite seconde extrémité de ladite enveloppe extérieure, et
    un moyen porté par ladite partie d'extrémité opposée dudit arbre en vue d'une mise en prise avec une extrémité dudit outil de coupe (22) opposée à ladite partie d'extrémité avant, de sorte qu'une rotation de ladite partie de molette amène ledit outil de coupe à s'étendre ou à se rétracter par rapport à ladite première extrémité de ladite enveloppe extérieure.
  6. Ensemble de cartouche d'outil de coupe (20) selon la revendication 5, dans lequel ladite 'partie d'extrémité définit un évidement (72), et ledit moyen porté par ladite partie d'extrémité comprend une bille (74) pouvant être reçue dans ledit évidement, et dans lequel ladite extrémité dudit outil de coupe (22) est en prise avec ladite bille.
  7. Ensemble de cartouche d'outil de coupe (20) selon la revendication 6, comprenant en outre un troisième roulement radial interposé entre lesdits au moins deux roulements radiaux (38, 40) et ladite bille (74), ledit troisième roulement radial définissant un alésage en vue de recevoir, avec possibilité de rotation, ladite extrémité dudit outil de coupe (22).
  8. Ensemble de cartouche d'outil de coupe (20) selon l'une quelconque des revendications 5 à 7, caractérisé en outre par :
    une coiffe (58) reliée à ladite première extrémité de ladite enveloppe extérieure (24) adjacente auxdits au moins deux roulements radiaux (38, 40), ladite coiffe présentant une surface de référence et un alésage destiné à recevoir ledit outil de coupe (22), ledit alésage s'étendant depuis ladite surface de référence à travers ladite coiffe, et dans lequel
    ladite enveloppe extérieure comprend une surface périphérique définissant des index angulaires (78) disposés tout autour, et
    ladite partie de molette comprend un repère de référence (80) pouvant s'aligner avec lesdits index angulaires, de sorte que lorsque ladite partie de molette est entraínée en rotation, la position dudit repère de référence par rapport auxdits index angulaires indique la quantité selon laquelle ledit outil de coupe s'étend au-delà de ladite partie de référence.
  9. Ensemble de cartouche d'outil de coupe (20) selon l'une quelconque des revendications 4 à 8, dans lequel ledit alésage axial (32) s'étend sur une certaine distance dans ladite enveloppe extérieure (24) depuis ladite première extrémité, en définissant ainsi une surface inférieure (82), et ledit moyen destiné à ajuster la quantité selon laquelle ladite arête tranchante s'étend par rapport à ladite enveloppe extérieure comprend :
    une coiffe (58) en prise par vissage avec ladite première extrémité de ladite enveloppe extérieure adjacente auxdits au moins deux roulements radiaux (38, 40), ladite coiffe comprenant une surface de référence et définissant un alésage destiné à recevoir ledit outil de coupe (22), ledit alésage s'étendant depuis ladite surface de référence à travers ladite coiffe, et
    un moyen porté par ladite surface inférieure en vue de venir en prise avec une extrémité dudit outil de coupe opposée à ladite partie d'extrémité avant, de sorte qu'une rotation de ladite coiffe amène ledit outil de coupe à s'étendre ou à se rétracter par rapport à ladite surface de référence.
  10. Ensemble de cartouche d'outil de coupe (20) selon la revendication 9, dans lequel ladite surface inférieure (82) définit un évidement (72') et ledit moyen porté par ledit arbre comprend une bille (70) pouvant être reçue dans ledit évidement, et dans lequel
       ladite extrémité dudit outil de coupe (22) est en prise avec ladite bille.
  11. Ensemble de cartouche d'outil de coupe (20) selon la revendication 9 ou 10, caractérisé en outre par :
    ladite enveloppe extérieure (24) comprenant une surface périphérique définissant des index angulaires (78) disposés tout autour, et
    ladite coiffe (58). comprend un repère de référence (80) pouvant s'aligner avec lesdits index angulaires (78), de sorte que lorsque ladite coiffe est entraínée en rotation, la position dudit repère de référence par rapport auxdits index angulaires indique la quantité selon laquelle ledit outil de coupe s'étend au-delà de ladite surface de référence.
  12. Ensemble de cartouche d'outil de coupe (20) selon l'une quelconque des revendications précédentes, dans lequel ledit élément élastique (43) est un joint torique.
  13. Ensemble de cartouche d'outil de coupes (20") destiné à une utilisation avec un mécanisme de coupe en X-Y de matériau en feuille et destiné à recevoir et maintenir de façon amovible, en vue d'une rotation autour de son axe central, un outil de coupe allongé (22") présentant une partie d'extrémité avant (52") affilée pour réaliser une arête tranchante inclinée par rapport audit axe d'outil central et comportant une pointe d'extrémité (56") décalée par rapport audit axe d'outil central, ledit ensemble de cartouche (20") comprenant :
    une enveloppe extérieure (24") comportant un axe d'enveloppe central, des première (26") et seconde extrémités, et un alésage axial (32") s'étendant au moins sur une certaine distance dans ladite enveloppe extérieure (24") par rapport à ladite première extrémité (26"),
    des moyens de roulements radiaux (38", 40" ; 96, 98) reçus à l'intérieur dudit alésage axial (32") et définissant un espacement prédéterminé entre les roulements d'une paire, chacun desdits roulements radiaux (38", 40" ; 96, 98) comportant un chemin de roulement intérieur pouvant être entraíné en rotation autour dudit axe central d'enveloppe, et comportant un alésage destiné à recevoir de façon amovible ledit outil de coupe (22"), ladite partie d'extrémité avant (52") dudit outil de coupe (22") dépassant de ladite enveloppe (24"); et
    un élément annulaire élastique (43", 100) positionné dans ledit espacement, caractérisé en ce que deux paires de roulements radiaux (38", 40" ; 96, 98) sont reçues à l'intérieur dudit alésage axial (32"), et en ce que deux éléments annulaires élastiques (43", 100) sont prévus, un élément annulaire (43", 100) étant positionné dans l'espacement de chaque paire de roulements (38", 40" ; 96, 98), en prise sous compression avec des chemins de roulement intérieurs de chaque paire de roulements, en exerçant ainsi une force sur chacun desdits chemins de roulement intérieurs.
EP19980105974 1997-04-15 1998-04-01 Couteau et porte-couteaux pour un appareil de traitement de matériaux en feuille Expired - Lifetime EP0872314B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83807597A 1997-04-15 1997-04-15
US838075 1997-04-15

Publications (2)

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EP0872314A1 EP0872314A1 (fr) 1998-10-21
EP0872314B1 true EP0872314B1 (fr) 2001-06-20

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EP19980105974 Expired - Lifetime EP0872314B1 (fr) 1997-04-15 1998-04-01 Couteau et porte-couteaux pour un appareil de traitement de matériaux en feuille

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EP (1) EP0872314B1 (fr)
JP (1) JP3217748B2 (fr)
DE (1) DE69800951T2 (fr)
ES (1) ES2160380T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100579884B1 (ko) * 2003-11-29 2006-05-15 케이그라스(주) 채색유리용 절삭장치
US8156852B2 (en) 2004-01-22 2012-04-17 Graphtec Kabushiki Kaisha Cutting plotter, cutting plotter driving control device, cut target medium supporting sheet, cut target medium, cutting pen, method of manufacturing paper product, and method of generating cut data
US7930958B2 (en) * 2005-07-14 2011-04-26 Provo Craft And Novelty, Inc. Blade housing for electronic cutting apparatus
JP5913891B2 (ja) * 2011-10-03 2016-04-27 グラフテック株式会社 カッティングペン、ジグおよびカッティングプロッタ
JP6439458B2 (ja) * 2015-01-22 2018-12-19 ブラザー工業株式会社 加工装置及びカートリッジ
US9993008B2 (en) * 2016-11-04 2018-06-12 Marel, Inc. Peeler carriage with knife assembly
CN108406917B (zh) * 2018-02-01 2023-11-17 河南凯邦电机有限公司 一种用于切割电机绕组胶纸的刀具
DE102020127951A1 (de) 2020-08-03 2022-02-03 NTS electronic and components GmbH Schleppmesserhaltevorrichtung
CN112976110B (zh) * 2021-02-02 2022-04-05 浙江得马智能装备有限公司 一种应用于雕刻机的振动刀旋转机构

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094134A (en) * 1990-06-08 1992-03-10 Roland Dg Corporation Cutting pen
JPH0852685A (ja) * 1994-08-09 1996-02-27 Roland D G Kk カッティングペン
JPH0890486A (ja) * 1994-09-28 1996-04-09 Roland D G Kk カッティングペン

Also Published As

Publication number Publication date
ES2160380T3 (es) 2001-11-01
DE69800951D1 (de) 2001-07-26
DE69800951T2 (de) 2002-03-28
JPH10315197A (ja) 1998-12-02
JP3217748B2 (ja) 2001-10-15
EP0872314A1 (fr) 1998-10-21

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