WO1999041044A1 - Dispositif de decoupage a elements de coupe tournant dans des directions opposees - Google Patents

Dispositif de decoupage a elements de coupe tournant dans des directions opposees Download PDF

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Publication number
WO1999041044A1
WO1999041044A1 PCT/EP1999/000196 EP9900196W WO9941044A1 WO 1999041044 A1 WO1999041044 A1 WO 1999041044A1 EP 9900196 W EP9900196 W EP 9900196W WO 9941044 A1 WO9941044 A1 WO 9941044A1
Authority
WO
WIPO (PCT)
Prior art keywords
separating
separating elements
elements
separating device
holding
Prior art date
Application number
PCT/EP1999/000196
Other languages
German (de)
English (en)
Inventor
Gerd Münnekehoff
Original Assignee
Powertools International Gmbh
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 Powertools International Gmbh filed Critical Powertools International Gmbh
Priority to AT0901799A priority Critical patent/AT501266B8/de
Priority to DE19980213T priority patent/DE19980213D2/de
Priority to AU27169/99A priority patent/AU2716999A/en
Publication of WO1999041044A1 publication Critical patent/WO1999041044A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/34—Devices for securing a plurality of circular saw blades on a single saw spindle; Equipment for adjusting the mutual distance

Definitions

  • the present invention relates to a cutting device, in particular a circular saw, with two circular disk-shaped, parallel, coaxially counter-rotating separating elements, in particular circular saw blades.
  • this is achieved by mechanical holding means for the separating elements designed in such a way that a friction-preventing gap distance is inevitably ensured in the assembled state between the separating elements. According to the invention, there is consequently no need to generate a pressure cushion between the separating elements. Instead, the friction-preventing gap distance is guaranteed solely by the mechanical mounting of the separating elements via the holding means according to the invention.
  • the holding means are expediently designed to match the dimensions, in particular the thickness, of the separating elements in such a way that, in the assembled state, the gap distance between the separating elements - especially in the area of cutting elements (for example teeth) arranged on the outer circumference - has a clear width of at least 2/100 mm to a maximum of about 1/10 mm.
  • the minimum distance of about 2/100 mm ensures that there is practically no friction between the separating elements during operation.
  • the maximum distance of 5/100 to a maximum of 1/10 mm prevents material parts (chips) from being pressed between the separating elements during the cutting process and then being pushed apart by the wedge effect.
  • 3 is a plan view of a holding flange
  • FIG. 5 shows a basic illustration of a preferred embodiment of a drive device of the separating device according to the invention
  • FIG. 6 is a view analogous to FIG. 1 in an alternative embodiment of the holding means according to the invention.
  • Fig. 7 is a view analogous to Fig. 2, i.e. 6 shows a section VII -VII according to FIG. 6,
  • FIG. 8 is an enlarged view of area Y in FIG. 6.
  • a cutting device is designed in particular as a double circular saw with two circular disk-shaped, parallel cutting elements 2, 4 which can be driven coaxially in opposite directions, in particular circular saw blades.
  • mechanical holding means 6 are provided for the separating elements 2, 4 in such a way that, in the assembled state, a gap distance A is necessarily guaranteed between the separating elements 2 and 4, for which reference is made in particular to FIGS. 4 and 8.
  • the holding means 6 essentially consist of two coaxial, axially spaced-apart holding flanges 8 and 10, which can be detachably connected between them on their mutually facing end faces, each with one of the separating elements 2, 4.
  • the separating element 2, 4 with a central opening 9 for exact centering is placed on a correspondingly adapted shoulder 11 of the holding flange 8, 10 (FIGS. 1 to 3).
  • each separating element 2, 4 can be screwed to the associated holding flange 8, 10.
  • several, as shown, for example, three screws 12, distributed uniformly over the circumference, are screwed in each case from the center between the flanges 8, 10 through screw holes 14 of the respective separating element 2 or 4 into threaded bores 16 of the associated holding flange 8 or 10 .
  • there are in particular countersunk screws 12 which must be arranged with their heads completely countersunk in the countersinks of the separating elements 2, 4 in order to ensure the gap distance A in this area as well.
  • the holding means 6 are designed according to the invention in such a way that the gap distance A between the separating elements 2, 4 - especially in the area of cutting elements or teeth 18 arranged on the outer circumference - is in the range from 2/100 mm to about 1/10 mm.
  • the two holding flanges 8, 10 are also spaced apart from one another by a gap distance A '.
  • a drive unit is illustrated very schematically in FIG. 5.
  • the one separating element 2 is connected to the associated holding flange 8.
  • the other holding flange 10 can be removed in order to be able to connect the one separating element 2 to the holding flange 8 in this state.
  • the other separating element 4 is then attached to the associated holding flange 10 and the latter is then mounted.
  • Each holding flange 8, 10 is then connected to one of two drive shafts 20, 22 which can be driven in opposite directions.
  • One drive shaft 22 is guided as an inner shaft coaxially within the other drive shaft 20, which is designed as a hollow shaft.
  • the inner shaft 22 extends axially beyond the area of the holding flange 8 connected to the hollow shaft 20 and can be detachably connected, preferably screwed, to the other holding flange 10 at its free shaft end 24.
  • the type of connection between the holding flange 10 and the drive shaft 22 in adaptation to the other holding flange 8 and the separating element 2 connected therewith ensures the gap distance A according to the invention.
  • the drive shafts 20, 22 are each connected to one of two gear wheels 26, 28. These two gear wheels 26, 28 have mutually opposing toothings with which a common drive pinion 30 is connected. Rotation of the drive pinion 30 consequently drives the two gear wheels 26, 28 in opposite directions.
  • each separating element 2, 4 can be releasably connected to the associated holding flange 8, 10 via a type of bayonet connection 32.
  • each separating element 2, 4 preferably has a plurality of, as shown, three keyhole-like holding openings 34 oriented in the direction of rotation, while each holding flange 8, 10 has a corresponding number of pin-shaped or bolt-shaped holding elements 36 in a corresponding arrangement.
  • the holding elements 36 are preferably spring-loaded in such a way that they pull the separating element 2 or 4 against the holding flange 8 or 10.
  • Each holding opening 34 consists of an enlarged lead-through area 34a for a holding section 36a of the associated holding element 36 which is designed as a countersunk head, and of a narrower holding slot area 34b which has a chamfer 34c for the recessed holding of the holding section 36a (see in particular FIGS. 7 and 8).
  • spring elements 38 which are arranged between the respective holding flange 8, 10 and the holding elements 36 which are mounted so as to be relatively movable, are used to generate the spring preload.
  • the circular-disk-shaped separating elements 2, 4 can also be advantageous to design the circular-disk-shaped separating elements 2, 4 to be very slightly conical, whereby stiffening is achieved, so that the gap distance A can be kept practically constant even during use.
  • the Curvature between the center of the pane and the outer circumference is, for example, approximately 1/10 to 3/10 mm (measured perpendicular to the plane of the pane).
  • the invention is not limited to the exemplary embodiments shown and described, but also encompasses all embodiments having the same effect in the sense of the invention. Furthermore, the invention has not yet been limited to the combination of features defined in claim 1, but can also be defined by any other combination of certain features of all the individual features disclosed overall. This means that in principle practically every single feature of claim 1 can be omitted or replaced by at least one single feature disclosed elsewhere in the application. In this respect, claim 1 is only to be understood as a first attempt at formulation for an invention.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Drilling Tools (AREA)
  • Sawing (AREA)

Abstract

L'invention vise à créer un dispositif de découpage assurant un fonctionnement pratiquement sans usure et insensible aux défaillances, à l'aide de mesures simples, sur le plan de la conception, et économiques. A cet effet, des éléments de retenue mécaniques (6) destinés aux éléments de coupe sont conçus de façon à garantir inévitablement un espace (A) antifriction entre les éléments de coupe (2, 4) à l'état monté. Ainsi, il n'est plus nécessaire de produire un coussin de pression entre les éléments de coupe. Les éléments de retenue (6) sont conçus pour être adaptés à l'épaisseur des éléments de coupe, de sorte que, à l'état monté, l'écart entre les éléments de coupe, en particulier dans la zone des éléments coupants (par ex. des dents) placés à la périphérie extérieure, présente un diamètre intérieur compris entre 1/200 mm et 1/10 mm. Grâce à cet espace minimal, il ne se produit pratiquement aucune friction entre les éléments de coupe, même pendant le fonctionnement. L'écart maximal compris entre 5/100 et au maximum 1/10 mm permet d'empêcher que des parties de matériau (copeaux) exercent une pression entre les éléments de coupe pendant l'opération de découpage, et puissent écarter ces derniers par un effet de coin.
PCT/EP1999/000196 1998-02-16 1999-01-15 Dispositif de decoupage a elements de coupe tournant dans des directions opposees WO1999041044A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT0901799A AT501266B8 (de) 1998-02-16 1999-01-15 Trenngerät mit gegenläufigen trennelementen
DE19980213T DE19980213D2 (de) 1998-02-16 1999-01-15 Trenngerät mit gegenläufigen Trennelementen
AU27169/99A AU2716999A (en) 1998-02-16 1999-01-15 Separating device with separating elements turning in opposite directions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29804220U DE29804220U1 (de) 1998-02-16 1998-02-16 Trenngerät mit gegenläufigen Trennelementen
DE29804220.7 1998-02-16

Publications (1)

Publication Number Publication Date
WO1999041044A1 true WO1999041044A1 (fr) 1999-08-19

Family

ID=8053889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/000196 WO1999041044A1 (fr) 1998-02-16 1999-01-15 Dispositif de decoupage a elements de coupe tournant dans des directions opposees

Country Status (5)

Country Link
AT (1) AT501266B8 (fr)
AU (1) AU2716999A (fr)
CH (1) CH694011A5 (fr)
DE (2) DE29804220U1 (fr)
WO (1) WO1999041044A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043910A1 (fr) * 2000-12-02 2002-06-06 Robert Bosch Gmbh Machine-outil portative comportant deux meules de decoupage tournant en sens contraire directement de maniere adjacente et des elements pour monter les meules de decoupage pour une telle machine-outil portative
WO2002092296A2 (fr) * 2001-05-16 2002-11-21 Nord Center I Kalmar Ab Systeme de moyeu

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010509080A (ja) 2006-11-09 2010-03-25 ツインブレード、テクノロジーズ、ホールディング、スウェーデン、アクチボラグ ハブ装置
US9774232B2 (en) 2011-05-10 2017-09-26 General Electric Technology Gmbh Cutting device
CN102922566B (zh) * 2012-10-24 2015-09-16 深圳市鑫运祥精密刀具有限公司 一种铣削双贴面板的加工方法及可调式组合预铣刀

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1565396A (fr) * 1967-12-15 1969-05-02
FR2192483A5 (fr) * 1972-07-07 1974-02-08 Giraud Leone
US4784029A (en) * 1985-04-02 1988-11-15 Gebelius Sven Runo Vilhelm Sawing method, and a device for utilization of the method
DE29504233U1 (de) * 1995-02-25 1995-06-08 Ledermann & Co Ritzwerkzeug für eine Kreissägemaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1565396A (fr) * 1967-12-15 1969-05-02
FR2192483A5 (fr) * 1972-07-07 1974-02-08 Giraud Leone
US4784029A (en) * 1985-04-02 1988-11-15 Gebelius Sven Runo Vilhelm Sawing method, and a device for utilization of the method
DE29504233U1 (de) * 1995-02-25 1995-06-08 Ledermann & Co Ritzwerkzeug für eine Kreissägemaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043910A1 (fr) * 2000-12-02 2002-06-06 Robert Bosch Gmbh Machine-outil portative comportant deux meules de decoupage tournant en sens contraire directement de maniere adjacente et des elements pour monter les meules de decoupage pour une telle machine-outil portative
US6938532B2 (en) 2000-12-02 2005-09-06 Robert Bosch Gmbh Hand machine tool comprising two cutting disks, which rotate counter and immediately adjacent to one another, and means for chucking the cutting disks for a hand machine tool of this type
WO2002092296A2 (fr) * 2001-05-16 2002-11-21 Nord Center I Kalmar Ab Systeme de moyeu
WO2002092296A3 (fr) * 2001-05-16 2007-11-22 Nord Ct I Kalmar Ab Systeme de moyeu

Also Published As

Publication number Publication date
AU2716999A (en) 1999-08-30
CH694011A5 (de) 2004-06-15
DE29804220U1 (de) 1999-06-17
AT501266B8 (de) 2007-02-15
AT501266B1 (de) 2006-08-15
AT501266A5 (de) 2006-08-15
DE19980213D2 (de) 2001-02-15

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