EP0872314A1 - 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
EP0872314A1
EP0872314A1 EP98105974A EP98105974A EP0872314A1 EP 0872314 A1 EP0872314 A1 EP 0872314A1 EP 98105974 A EP98105974 A EP 98105974A EP 98105974 A EP98105974 A EP 98105974A EP 0872314 A1 EP0872314 A1 EP 0872314A1
Authority
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.)
Granted
Application number
EP98105974A
Other languages
German (de)
English (en)
Other versions
EP0872314B1 (fr
Inventor
Brain 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
Original Assignee
Gerber Scientific Products Inc
Priority date (The priority date 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 date listed.)
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.
  • 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.
  • prior art drag knives have attempted to employ mechanisms to reduce the radial clearance in the bearing by shifting the bearing ' s inner bearing race relative to its outer race, thereby forcing the races against the rolling elements, and reducing or eliminating the above-described radial clearance.
  • This technique is referred to by those familiar with the manufacture of bearings, as preloading a bearing.
  • radial bearings in drag knives have been preloaded by placing a stationary spring or other resilient member between the bearing's inner race and a non-rotating surface or bearing seat.
  • this method produced an inordinate amount of friction between the bearings inner race and the resilient member severely restricting the ability of the blade to align itself with the direction of cut.
  • 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 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.
  • 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)
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)

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

Family

ID=25276190

Family Applications (1)

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

Country Status (4)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557246A2 (fr) * 2004-01-22 2005-07-27 Graphtec Kabushiki Kaisha Table traçante équipée d'un dispositif de coupe, dispositif de contrôle pour une telle table, feuille support pour un objet à découper, objet à découper, outil de coupe, procédé de fabrication d'un produit en papier et procédé de génération de données de coupe
CN108406917A (zh) * 2018-02-01 2018-08-17 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

Families Citing this family (6)

* 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
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
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

Citations (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

Patent Citations (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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 096, no. 006 28 June 1996 (1996-06-28) *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 008 30 August 1996 (1996-08-30) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557246A2 (fr) * 2004-01-22 2005-07-27 Graphtec Kabushiki Kaisha Table traçante équipée d'un dispositif de coupe, dispositif de contrôle pour une telle table, feuille support pour un objet à découper, objet à découper, outil de coupe, procédé de fabrication d'un produit en papier et procédé de génération de données de coupe
EP1557246A3 (fr) * 2004-01-22 2006-10-11 Graphtec Kabushiki Kaisha Table traçante équipée d'un dispositif de coupe, dispositif de contrôle pour une telle table, feuille support pour un objet à découper, objet à découper, outil de coupe, procédé de fabrication d'un produit en papier et procédé de génération de données de coupe
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
CN108406917A (zh) * 2018-02-01 2018-08-17 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
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

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
EP0872314B1 (fr) 2001-06-20

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