EP0385133B1 - Dispositif pour découper des zones endommagées dans des pièces de caoutchouc - Google Patents

Dispositif pour découper des zones endommagées dans des pièces de caoutchouc Download PDF

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Publication number
EP0385133B1
EP0385133B1 EP90102226A EP90102226A EP0385133B1 EP 0385133 B1 EP0385133 B1 EP 0385133B1 EP 90102226 A EP90102226 A EP 90102226A EP 90102226 A EP90102226 A EP 90102226A EP 0385133 B1 EP0385133 B1 EP 0385133B1
Authority
EP
European Patent Office
Prior art keywords
socket
tool
cutting crown
cutting
carrier
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
EP90102226A
Other languages
German (de)
English (en)
Other versions
EP0385133A1 (fr
Inventor
Walter Kieninger
Ernst Füner
Herbert Hetzinger
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.)
Entwicklungszentrum fur Zerspanungstechnik & Co KG GmbH
Entwicklungszentrum fur Zerspanungstechnik GmbH and Co KG
Original Assignee
Entwicklungszentrum fur Zerspanungstechnik & Co KG GmbH
Entwicklungszentrum fur Zerspanungstechnik GmbH and Co KG
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 Entwicklungszentrum fur Zerspanungstechnik & Co KG GmbH, Entwicklungszentrum fur Zerspanungstechnik GmbH and Co KG filed Critical Entwicklungszentrum fur Zerspanungstechnik & Co KG GmbH
Publication of EP0385133A1 publication Critical patent/EP0385133A1/fr
Application granted granted Critical
Publication of EP0385133B1 publication Critical patent/EP0385133B1/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
    • B26F1/3846—Cutting-out; Stamping-out cutting out discs or the like
    • 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
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/78—Tool of specific diverse material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion
    • Y10T408/8953—Having axial, core-receiving central portion with lateral outlet

Definitions

  • the present invention relates to a device for removing damaged areas in rubber parts, in particular in rubber parts with reinforcing elements, such as steel belt tires.
  • the damaged areas are conventionally drilled out and repaired by vulcanization with a rubber plug.
  • drilling out the damaged areas is difficult, especially when the tire has reinforcing elements, such as an inserted steel belt.
  • the requirements for the tool are correspondingly different.
  • the damaged areas are removed with the help of conical rasps. It is particularly disadvantageous here that the wires of the steel belt or other inserts are not cut off cleanly, but rather are torn off. However, tearing off does not result in a smooth surface or regular round shape, which leads to the quality of the subsequently vulcanized point being greatly reduced.
  • a device on packaging machines which has a driven and rotating tool which is formed from a sleeve, the wall thickness of which tapers in the tool working direction essentially to an edge, and the outer peripheral surface of the Sleeve extends essentially parallel to its axis and the inner peripheral surface in the foremost region of the sleeve extends obliquely outwards.
  • the device of this prior art shows a cutting edge which is essentially in the form of a wave.
  • this corrugation has the disadvantage that it fails when cutting rubber parts with steel belt reinforcement. Due to the corrugation, when cutting the rubber, it will spring back due to its elastic expansion capacity, which means that a flat cut cannot be guaranteed over the entire circumferential surface. In addition, problems occur when the cutting edge hits steel belt parts. In addition, this unclean cut leads to leakage problems when screwing in prefabricated rubber repairs, since on the one hand there are spaces with free spaces whose irregularities cannot be compensated for by vulcanization, which can no longer be seen across the entire circumferential surface.
  • the device according to the invention ensures that both the tire rubber and the steel belt are exactly cut, which advantageously leads to a smooth surface of the point to be vulcanized, which also has a round shape of high quality.
  • the sleeve is formed from a cutting crown and a carrier sleeve, this advantageously results in a solution that is particularly simple in terms of tooling, since an adaptation of the Cutting crown to the geometry and material selection is easily possible.
  • the cutting crown can preferably be formed from a high-hard material, preferably hard metal, wherein the cutting crown design means that a relatively small amount of the expensive material, which also requires particularly high machining costs, is sufficient.
  • the cutting crown is fastened to the carrier sleeve, the connection being made in the simplest way by soldering.
  • the cutting crown and the carrier sleeve have soldering surfaces which are matched to one another. These soldering surfaces are preferably formed from inclined end sides of the cutting crown and the carrier sleeve, the end side of the cutting crown being designed as a conical jacket. This has the advantage that the cutting crown is guided through the soldering surface and centered itself.
  • a sawtooth profile is formed by the notches on the front edge of the sleeve or cutting crown, which can be adapted to the material to be machined both in geometry and type of cutting material, particularly good adaptability of the tool is achieved for the workpiece to be machined, so that For example, depending on the rubber compound and insert, the corresponding tool has the properties necessary for high-quality machining.
  • the carrier sleeve has a cutout, so that material which has penetrated into the cutting crown and carrier sleeve can be laterally ejected at the rear, and clogging of the cutting crown by appropriately cut out rubber plugs is avoided.
  • the recess is designed such that it begins in the vicinity of the cutting crown and extends up to an end region, whereby good guidance of the material which has been removed is made possible.
  • the carrier sleeve can be designed to be placed on a receptacle for a tool drive device.
  • it has an L-shaped recess in the region of its end opposite the cutting crown.
  • the receiving piece has at least one tool guide area for receiving the carrier sleeve, and preferably has a pin that can be brought into engagement with the L-shaped recess of the carrier sleeve. This advantageously results in a bayonet-like connection area, so that the carrier sleeve can be guided well on the one hand and can be connected and detached again in the simplest and fastest way on the other hand.
  • the receptacle has several, for example three, tool guide areas which have different diameters, so that carrier sleeves of different diameters can be adapted to produce different cutting surface sizes, each adapted to the size of the damaged area in the rubber part.
  • the receptacle piece can in turn be simply connected to the drive device, with adaptation to the conventional drive devices, for example drilling machines, being possible by means of a standardized machine receptacle area.
  • a device has a tool 1, which is formed from a cutting-crown-like sleeve 3 and a carrier sleeve 5.
  • the cutting crown 3 has notches 7, which produce a sawtooth-like profile of the tool leading edge 9.
  • the tool leading edge 9 is, as can be seen particularly clearly from FIG. 2, a tapering, knife-like edge, the cross section of the cutting crown 3 continuously increasing in the direction of the carrier sleeve 5 enlarged.
  • the cross-sectional enlargement is designed such that the outer circumferential wall 11 of the cutting crown 3 runs essentially parallel to its axis 13, so that the cut surface produced is essentially perpendicular to the plane of the workpiece.
  • the cutting crown 3 has an inner peripheral wall 15 which extends obliquely inwards from the tool front edge 9 in the direction of the axis 13.
  • the end side 17 of the cutting crown 3 opposite the upper edge 9 is designed as a beveled soldering surface.
  • the carrier sleeve 5 has a correspondingly bevelled upper edge 19.
  • the bevels are preferably chosen so that the upper edge 19 of the carrier sleeve 5 is chamfered inwards, so that the cutting crown 3 placed thereon aligns itself and is received in the carrier sleeve 5.
  • the cutting crown 3 is connected to the carrier sleeve 5 in the simplest manner by soldering, which represents a simple and robust connection. Furthermore, the soldering enables the cutting crown 3 to be detached from the carrier sleeve 5 by simple measures, for example in the event of wear of the cutting edge region, which makes it necessary to replace the cutting crown 3.
  • the notches 7 are preferably V-shaped, but the two legs of the V preferably have different angles to a plane or direction parallel to the axis 13.
  • the notches can also have a different shape, provided that there is a sawtooth effect.
  • the drive edge 23 of each notch 7 located in the direction of rotation - arrow 21 - is chamfered at an angle ⁇ with respect to the direction of the axis 13, which is greater than an angle ⁇ with which a trailing edge 25 is arranged inclined with respect to the direction of the axis 13.
  • the carrier sleeve 5 has a recess 27 which extends obliquely inwards with respect to the axis 13 of the carrier sleeve 5, which results in an enlarging opening.
  • the opening preferably extends, as can be seen from the side view according to FIG. 1, close to the axis of rotation, so that the separated rubber profiles can be brought out in this largest region.
  • the cutout 27 then ends in a region 29 that tapers again rapidly.
  • a recess 33 is formed which is provided for the connection of the carrier sleeve to a receiving piece 35 (FIGS. 5 and 7).
  • the arrangement on the circumference of the carrier sleeve 5 results from FIG. 3 and its design clearly from FIG. 4.
  • the recess 33 is L-shaped.
  • the cutout 33 enables the carrier sleeve 5 to be connected to the receiving piece 35 in a particularly simple manner.
  • the receptacle has a tool guide area 36 which, with a corresponding fit, is brought into contact with a guide surface 39 of the carrier sleeve 5, as can be clearly seen in FIG. 5.
  • the tool guide area 36 has a pin 37 protruding above it, which can be brought into engagement with the L-shaped recess 33, so that a bayonet-like connection area is created in the simplest way also offers a particularly simple and quickly detachable connection between the receptacle and the sleeve.
  • the receiving piece 35 has three tool guide areas 36, 36 ', 36' 'for receiving corresponding carrier sleeves 5, 5', 5 ''.
  • the respective corresponding parts are designated with the corresponding reference numerals, the reference numerals with 'and the larger tool with respect to the tool 1 with' 'for the smaller tool compared to the tool 1.
  • the receptacle 35 can also have a tool guide area which can be changed in its diameter continuously or stepwise, so that a corresponding adaptation to different carrier sleeve diameters and thus cutting crown diameters is possible.
  • a machine holder 41 is formed, which corresponds to the usual standard design, so that the receiving piece can be inserted into the chuck of a hand drill, for example.
  • 6 shows a top view of the machine holder 41 of the holder 35.
  • FIG. 7 shows a side view of the receiving piece 35 from FIG. 5, which is partially cut to illustrate the attachment of the pin 37. Corresponding parts of the receiving piece 35 are provided with the corresponding reference numerals.
  • damaged areas in rubber parts in particular steel belt tires, can be cleanly removed with the device according to the invention, a smooth and round cut surface being produced.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Turning (AREA)
  • Springs (AREA)
  • Tyre Moulding (AREA)

Claims (17)

  1. Dispositif pour découper des zones endommagées dans des pièces de caoutchouc, y compris dans des pièces armées comme des pneus à carcasse métallique, avec un outil entraîné et rotatif (1, 1', 1'') qui est formé d'un manchon dont l'épaisseur diminue, dans la direction de travail de l'outil, en une arête (9) en forme de couteau, la surface circonférentielle extérieure (11) du manchon s'étendant essentiellement parallèlement à son axe (13) et la surface circonférentielle intérieure (15) s'étendant, dans la zone la plus avant du manchon, de façon oblique vers l'extérieur, des encoches (7) étant formées dans l'arête avant de l'outil (9) de façon à couper l'arête (9), les encoches (7) présentant respectivement une profondeur axiale et une surface circonférentielle qui suffisent à déterminer une multiplicité de segments qui s'étendent le long de la circonférence.
  2. Dispositif selon la revendication 1, caractérisé en ce que le manchon est formé d'une couronne coupante (3, 3', 3'') et d'un manchon support (5, 5', 5'').
  3. Dispositif selon la revendication 2, caractérisé en ce que la couronne coupante (3, 3', 3'') est construite en un matériau très dur, de préférence un métal dur.
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que la couronne coupante (3, 3', 3'') est fixée au manchon de support (5, 5', 5,''), la liaison étant effectuée de préférence par brasage.
  5. Dispositif selon la revendication 4, caractérisé en ce que la couronne coupante (3, 3', 3'') et le manchon de support (5, 5', 5'') comportent des surfaces de brasage (17, 19) qui sont adaptées l'une à l'autre.
  6. Dispositif selon la revendication 5, caractérisé en ce que les surfaces de brasage (17, 19) sont formées d'extrémités obliques de la couronne coupante (3, 3', 3'') et du manchon de support (5, 5', 5''), l'extrémité (17) de la couronne coupante (3, 3', 3'') étant en forme d'aire latérale de cône.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que les encoches (7) sur l'arête avant (9) du manchon de la couronne coupante (3, 3', 3''), forment un profil en dents de scie qui peut être adapté aux matériaux à traiter, aussi bien en ce qui concerne sa géométrie qu'en ce qui concerne son type de matière de coupe.
  8. Dispositif selon l'une des revendications 2 à 7, caractérisé en ce que le manchon de support (5, 5', 5'') présente un évidement (27, 27', 27'').
  9. Dispositif selon la revendication 8, caractérisé en ce que l'évidement (27, 27', 27'') commence à proximité de la couronne coupante (3, 3', 3'') et s'étend en s' agrandissant jusqu'à une zone terminale (29).
  10. Dispositif selon l'une des revendications 2 à 9, caractérisé en ce que le manchon de support (5, 5', 5'') peut être placé sur une pièce de logement (35) d'un dispositif d'entraînement.
  11. Dispositif selon l'une des revendications 2 à 10, caractérisé en ce que le manchon de support (5, 5', 5'') présente un évidement en forme de L dans la zone de son extrémité opposée à la couronne coupante (3, 3', 3'').
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce que la pièce de logement (35) possède au moins une zone de guidage de l'outil (36, 36', 36'') qui est destinée à loger le manchon de support (5, 5', 5'').
  13. Dispositif selon la revendication 12, caractérisé en ce que la zone de guidage de l'outil (36, 36', 36'') possède un tenon (37, 37', 37'') faisant saillie sur sa circonférence, tenon qui peut être mis en prise avec l'évidement en forme de L (33, 33', 33'') du manchon de support (5, 5', 5'').
  14. Dispositif selon la revendication 12 ou 13, caractérisé en ce que la pièce de logement (35) possède plusieurs, de préférence trois, zones de guidage de l'outil (36, 36', 36'') qui sont de différents diamètres afin de pouvoir loger des manchons de support (5, 5', 5'') de différents diamètres.
  15. Dispositif selon l'une des revendications 10 à 14, caractérisé en ce que la pièce de logement (35) possède, à son extrémité opposée à la zone de guidage de l'outil, une zone de logement pour la machine (41).
  16. Dispositif selon la revendication 1, caractérisé en ce que l'outil est constitué d'un manchon comportant une couronne coupante (3, 3', 3'').
  17. Dispositif selon la revendication 16, caractérisé en ce que la couronne coupante est constituée d'un manchon très dur (3, 3', 3'').
EP90102226A 1989-02-17 1990-02-05 Dispositif pour découper des zones endommagées dans des pièces de caoutchouc Expired - Lifetime EP0385133B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8901906U 1989-02-17
DE8901906U DE8901906U1 (de) 1989-02-17 1989-02-17 Vorrichtung zum Entfernen beschädigter Stellen in Gummiteilen

Publications (2)

Publication Number Publication Date
EP0385133A1 EP0385133A1 (fr) 1990-09-05
EP0385133B1 true EP0385133B1 (fr) 1995-05-03

Family

ID=6836160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102226A Expired - Lifetime EP0385133B1 (fr) 1989-02-17 1990-02-05 Dispositif pour découper des zones endommagées dans des pièces de caoutchouc

Country Status (4)

Country Link
US (1) US5054971A (fr)
EP (1) EP0385133B1 (fr)
AT (1) ATE121984T1 (fr)
DE (2) DE8901906U1 (fr)

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CN110519932A (zh) * 2019-09-03 2019-11-29 沈雪峰 一种基于走线圈导电的电路板钻孔装置

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JP2009537343A (ja) * 2006-05-22 2009-10-29 ソシエテ ド テクノロジー ミシュラン ゴム製品を穴あけする装置及び方法
WO2008058329A1 (fr) * 2006-11-14 2008-05-22 Kym John Keightley Scie-cloche avec des lames de coupe interchangeables
US9884373B2 (en) * 2006-11-14 2018-02-06 Kym John Keightley Hole saw with interchangeable cutting blades
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US20110052340A1 (en) * 2009-08-28 2011-03-03 Combined Products Co. #1 Inc. Adjustable Depth Hole Saw Assembly
EP2745965A1 (fr) * 2012-12-21 2014-06-25 HILTI Aktiengesellschaft Trépan doté d'une section de coupe interchangeable
CN113289934B (zh) * 2021-06-21 2023-04-07 沈阳斯达特电子科技有限公司 冷喂料金属剔除设备
CN114559495A (zh) * 2022-03-28 2022-05-31 中船黄埔文冲船舶有限公司 一种用于加工护舷轮胎的开孔刀具及其使用方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110519932A (zh) * 2019-09-03 2019-11-29 沈雪峰 一种基于走线圈导电的电路板钻孔装置
CN110519932B (zh) * 2019-09-03 2021-10-01 何翔鹤 一种基于走线圈导电的电路板钻孔装置

Also Published As

Publication number Publication date
DE8901906U1 (de) 1989-05-24
ATE121984T1 (de) 1995-05-15
EP0385133A1 (fr) 1990-09-05
DE59008989D1 (de) 1995-06-08
US5054971A (en) 1991-10-08

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