EP0726838B1 - Tete porte-lames - Google Patents

Tete porte-lames Download PDF

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Publication number
EP0726838B1
EP0726838B1 EP93922912A EP93922912A EP0726838B1 EP 0726838 B1 EP0726838 B1 EP 0726838B1 EP 93922912 A EP93922912 A EP 93922912A EP 93922912 A EP93922912 A EP 93922912A EP 0726838 B1 EP0726838 B1 EP 0726838B1
Authority
EP
European Patent Office
Prior art keywords
plate
support plate
toothed system
blade plate
carrier body
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
EP93922912A
Other languages
German (de)
English (en)
Other versions
EP0726838A1 (fr
Inventor
Helmut Hammer
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.)
Leitz GmbH and Co KG
Original Assignee
Leitz 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 Leitz GmbH and Co KG filed Critical Leitz GmbH and Co KG
Publication of EP0726838A1 publication Critical patent/EP0726838A1/fr
Application granted granted Critical
Publication of EP0726838B1 publication Critical patent/EP0726838B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/186—Axially elongated knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/02—Cutter blocks; Other rotary cutting tools in the shape of long arbors, i.e. cylinder cutting blocks
    • B27G13/04—Securing the cutters by mechanical clamping means
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1908—Face or end mill
    • Y10T407/1912—Tool adjustable relative to holder
    • Y10T407/1914—Radially
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1908—Face or end mill
    • Y10T407/192—Face or end mill with separate means to fasten tool to holder
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1928—Tool adjustable relative to holder

Definitions

  • the invention relates to a cutter head which has the features of the preamble of claim 1. Knife heads of this type are preferably used for circumferential milling.
  • the support plate which is provided on its front side with a toothing with which a corresponding toothing provided on the rear side of the knife plate engages, for a positive locking against one Offset in the radial direction relative to the support body on a projection which forms two legs projecting perpendicularly from the support plate.
  • These legs receive between them a reduced-diameter middle section of a pin which is located in a bore of the support body which extends parallel to the direction of offset and which is provided with an internal thread with which an external thread of the one end section engages.
  • the two end sections of the pin secure the legs and thus also the support plate against displacement in the displacement direction.
  • the position of the support plate depends on the position of the pin in the bore receiving it, ie how far the pin is screwed into this bore. Thanks to the toothing on the front of the support plate and the back of the knife plate, the latter can be adjusted radially outwards tooth by tooth in order to be able to set the correct flight circle diameter again, for example after regrinding. As a rule, however, it is usually essential to position the support plate using the pin. This positioning not only increases the effort required to prepare the tool for use. It also presupposes that the person carrying out the preparation of the tool works reliably.
  • the invention is therefore based on the object of providing a cutter head in which not only are the cutter plates positively fixed in the radial direction, but also makes it possible to carry out the setting of the trajectory diameter simply and without errors. This task is solved by a cutter head with the features of claim 1.
  • the toothing on the back of the support plate which is in engagement with a corresponding toothing of the flank of the support body forming the contact surface for the support plate, positively secures the support plate against an offset in the radial direction relative to the support body.
  • the groove-like depression provided in this flank between the inner end of its toothing and the base of the receptacle and the material part of the pressure plate engaging in it not only form an additional form-fitting securing but also ensure that despite the presence of the toothing on the flank and the back of the support plate the latter can only be arranged in a single radial position in the receptacle and therefore an adjustment or control of the radial position of the support plate is not necessary.
  • the knife plate can be displaced in the radial direction relative to the support plate to the outside thanks to the toothing on its rear side, the knife plate only needs to be displaced radially outward to resharpen the knife plate. This simplifies regrinding to a constant flight circle diameter, because only the hard metal of the knife plate needs to be ground, which can be done with a normal hard metal grinding wheel.
  • the support plate only needs to be profiled during its manufacture, which is possible with a normal corundum disc and can be carried out quickly. Since the support plate does not need to be reground, it remains fully functional and can also be used together with a new knife plate.
  • the solution provided in the knife head according to the invention has the advantage that even very hard types of hard metal that can no longer be soldered can be used. Furthermore, as with soldered knives, there is no longer any risk of crack formation during grinding and re-profiling. Since a pure carbide wheel can be used for regrinding, a far higher grinding quality is possible on the back of the knife plate than can be achieved with a combination grinding wheel.
  • a form-fitting securing against axial displacement of the knife plate relative to the pressure plate is also advantageous. Inadvertent incorrect positioning of the knife plate in the axial direction cannot then occur. Since the toothing can only come into engagement with the toothing of the support plate within the radial adjustment range of the knife plate, there is a clearly visible gap between the knife plate and support plate when the knife plate is positioned outside the radial adjustment area, which indicates to the user that the knife adjustment area has been exceeded. However, it is also possible to provide a positive limitation of the radial offset of the knife plate relative to the pressure plate in order to avoid an excessive radial offset of the knife plate.
  • the pressure plate has a pin protruding beyond its front side, which engages with a slot of the knife plate extending transversely to the longitudinal extension of the teeth, because here, with very simple means, both form-fitting securing against axial displacement and is also achieved against an excessive radial offset of the knife plate relative to the pressure plate.
  • a profile cutter head for circumferential milling has a support body 1 which is provided with a central through-bore 2 for receiving a shaft. From the outer lateral surface, four identical receptacles 3 penetrate into the supporting body 1, which are evenly distributed over the circumference and have the shape of grooves which extend with a constant profile over the entire axial length of the supporting body 1.
  • these grooves have flat flanks which run parallel to one another and which in the exemplary embodiment are inclined relative to a radial plane in such a way that the outer edge leads over the inner edge.
  • the flank 4 lagging in the direction of rotation is provided with micro toothing 5 over almost its entire surface, the teeth of which run parallel to the longitudinal axis of the supporting body 1.
  • a groove-like depression 8 penetrating into the trailing flank 4 is provided.
  • the longitudinal axis of each of these threaded bores 9 forms with the trailing flank 4 an acute counter the groove base 6 pointing angle.
  • a set screw 10 which is sunk in it and whose end section projecting into the receptacle 3 is thread-free in the exemplary embodiment.
  • the grub screws 10 lie against the base of a groove with a triangular cross section, which is provided in the side face of a pressure jaw 11, which extends over the entire axial length of the support body 1.
  • the pressure jaw 11 has a rectangular cross-sectional profile.
  • a knife plate 12 and a support plate 13 are arranged between the side surface of the pressure jaw 11 facing the trailing flank 4 and the trailing flank 4, which, like the pressure jaw 11, extend over the entire axial length of the support body 1.
  • the support plate 13 which rests on the trailing flank 4, is provided on its rear side with a micro toothing 14 which engages in the micro toothing 5 of the trailing flank 4. Following the inner end of the micro toothing 14, the support plate 13 has a strip-shaped material portion 15 which projects beyond the micro toothing 14 and engages in the recess 8 and thereby precludes any adjustment of the support plate 13 radially outward relative to the trailing flank 14.
  • the support plate 13 is also provided in the lower end zone of its front side facing the leading flank 7, against which the rear side of the cutter plate 12 rests, with a micro-toothing 16, the teeth of which extend in the axial direction over the entire axial length of the support plate 13.
  • the micro toothing 16 projects beyond the front side of the support plate 13 so that a micro toothing 17 can engage in it, which is provided in the lower half of the rear side of the knife plate 12 and extends over its entire surface extends axial length.
  • the width of the zones having the micro-toothings 16 and 17 is corresponding to that desired adjustment range selected.
  • the knife plate 12 and the support plate 13 are clamped together in the receptacle by pressing the pressure jaw 11 against the trailing edge 7 by means of the threaded pins 10.
  • the micro-toothing 14 of the support plate 13 is held in play-free engagement with the micro-toothing 5 of the trailing edge 4 and the micro-toothing 17 of the knife plate in play-free engagement with the micro-toothing 16 of the support plate.
  • the tension is released so far that the knife plate 12 can be displaced radially outward from one tooth relative to the support plate 13.
  • the support plate 13 is profiled only during its manufacturing process. It therefore retains its original shape and can therefore also be used together with a new or a different cutter plate 12, which may be made of a different material.
  • the knife plate 112 is provided on its rear side with a toothing 117 corresponding to the toothing 17 of the first exemplary embodiment, the teeth of which extend over the entire axial extent of the knife plate 112.
  • the toothing 117 ends at a distance from the radially inner edge of the rear of the knife plate 112.
  • the toothing 117 is completely recessed in the rear of the knife plate 112, as shown in FIG. 7. Because of the small dimensions of the tooth profile, the toothing 117 can also be referred to as micro toothing.
  • the toothing 114 of the support plate 113 which cooperates with the toothing 117, as shown in FIG. 8, projects substantially completely beyond the front of the support plate 113.
  • the number of teeth of the toothing 116 is smaller, in the exemplary embodiment half as large as the number of teeth of the toothing 117.
  • the knife plate 112 can therefore be adjusted in the radial direction by half the number of teeth of the toothing 116, which can also be seen in FIG 9 results, which shows the knife plate 112 in the position at the inner end of the adjustment range.
  • the back of the support plate 113 is provided on its back with a toothing 114 which engages with the toothing 105 with which the flank 104 lagging in the direction of rotation is provided with one of the grooves 103 which the supporting body 101 has.

Claims (6)

  1. Tête porte-lames, dont le corps de support (1;101) possède des logements (3;103) répartis uniformément sur sa périphérie et qui se présentent sous la forme de rainures, qui s'étendent dans la direction axiale du corps de support (1;101) et s'ouvrent vers l'extérieur et sont prévus pour une plaque formant lame respective (12;112) réglable dans une direction radiale et qui s'applique en étant bloquée contre un déplacement axial, contre la face avant d'une plaque de support (13;113), avec laquelle elle peut, au moyen d'une mâchoire de serrage (11) située sur le côté avant de lame ainsi qu'à l'aide d'au moins une vis (10), qui engrène avec un perçage taraudé du corps de support (1;101), qui débouche dans un flanc de la rainure, être serrée contre l'autre flanc, et dans laquelle
    a) la plaque de support (13;113) comporte, au niveau de sa face avant, une denture (16;116), qui est constituée de plusieurs dents parallèles à l'axe longitudinal du corps de support (1;101), et la plaque formant lame (12;112) comporte sur son côté arrière une denture correspondante (17;117), et les deux dentures (16,17; 116,117) peuvent être amenées en prise moyennant un décalage radial pouvant être sélectionné de la plaque formant lame (12;112) par rapport à la plaque de support (13;113); et
    b) des moyens (8,15) sont prévus pour réaliser un blocage par formes complémentaires de la plaque de support (13; 113) contre un décalage dans une direction radiale par rapport au corps de support (1;101),
    caractérisée en ce qu'il est prévu, comme moyens (8,15) pour réaliser un blocage par formes complémentaires de la plaque de support (13;113) contre un décalage dans la direction radiale par rapport au corps de support (1;101), le flanc (4;104), qui forme la surface d'application de la face arrière de la plaque de support (13;113) et comporte une denture (5;105) qui possède des dents, qui s'étendent parallèlement à l'axe longitudinal du corps de support (1;101) et avec lesquelles engrène une denture correspondante (14;114) située sur la face arrière de la plaque de support (13;113), et que le flanc (4;114) situé entre l'extrémité intérieure de la denture (5;105) et le fond (6) du logement (3;103) comporte un renfoncement (8) en forme de rainure, qui s'étend dans la direction des dents, et que la plaque de support (13;113) comporte, à la suite de l'extrémité intérieure de sa denture (14;114) située sur sa face arrière, une partie de matière (15) qui engrène avec le renfoncement en forme de rainure (8).
  2. Tête porte-lames selon la revendication 1, caractérisée par un blocage (18,19) par formes complémentaires s'opposant à un déplacement axial de la plaque formant lame (12) par rapport à la plaquette de support (13).
  3. Tête porte-lames selon la revendication 1 ou 2, caractérisée par une limitation (18,19) par formes complémentaires du décalage de la plaque formant lame (12) par rapport à la plaque de support (13).
  4. Tête porte-lames selon la revendication 3, caractérisée en ce que la plaque de support (13) possède une tige (18) qui fait saillie au-delà de sa face avant et qui s'engage dans une fente (19) de la plaque formant lame (12), qui s'étend transversalement par rapport à l'étendue longitudinale des dents de la denture (17) de la plaque formant lame (12).
  5. Tête porte-lames selon l'une des revendications 1 à 4, caractérisée en ce que la denture (17;117) de la plaque formant lame (12;112) se termine à distance du bord, intérieur du point de vue radial, de sa face arrière.
  6. Tête porte-lames selon l'une des revendications 1 à 5, caractérisée en ce que la denture (117) de la plaque formant lame (112) est disposée complètement en renfoncement dans cette plaque et que la denture (116), qui coopère avec cette denture, de la plaque de support (113) est complètement en saillie sur la face avant de cette plaque.
EP93922912A 1992-10-07 1993-10-06 Tete porte-lames Expired - Lifetime EP0726838B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9213466U DE9213466U1 (fr) 1992-10-07 1992-10-07
DE9213466U 1992-10-07
PCT/EP1993/002729 WO1994007665A1 (fr) 1992-10-07 1993-10-06 Tete porte-lames

Publications (2)

Publication Number Publication Date
EP0726838A1 EP0726838A1 (fr) 1996-08-21
EP0726838B1 true EP0726838B1 (fr) 1997-11-26

Family

ID=6884525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93922912A Expired - Lifetime EP0726838B1 (fr) 1992-10-07 1993-10-06 Tete porte-lames

Country Status (8)

Country Link
US (1) US5658101A (fr)
EP (1) EP0726838B1 (fr)
JP (1) JP2813604B2 (fr)
AT (1) ATE160527T1 (fr)
DE (2) DE9213466U1 (fr)
DK (1) DK0726838T3 (fr)
ES (1) ES2110631T3 (fr)
WO (1) WO1994007665A1 (fr)

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EP1123786A2 (fr) * 2000-02-08 2001-08-16 Stehle GmbH & Co. KG Werkzeug- und Maschinenfabrik Tête de fraisage

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FR2745222A1 (fr) * 1996-02-26 1997-08-29 Mecaniques De Savigneux Atel Dispositif de fixation de modules porte-outils sur un disque plateau pour le travail du bois
DE29615408U1 (de) * 1996-09-04 1998-01-08 Schrammel Helmut Dipl Ing Fh Werkzeugeinheit
DE29615412U1 (de) * 1996-09-04 1998-01-08 Schrammel Helmut Dipl Ing Fh Messer für einen Messerkopf
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DE19807111A1 (de) * 1998-02-20 1999-08-26 Will E C H Gmbh & Co Messertrommel für Maschinen zum Querschneiden von Materialbahnen
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US6189584B1 (en) 1998-08-12 2001-02-20 Douglas Scott Cayce Disposable carbide blade assembly for universal rotary cutter
US6173637B1 (en) * 1998-08-17 2001-01-16 Lrh Enterprises, Inc. Molding cutter head
SE514028C2 (sv) 1998-10-27 2000-12-11 Sandvik Ab Skär för roterbara skärverktyg
SE514029C2 (sv) * 1998-10-27 2000-12-11 Sandvik Ab Verktyg för spånavskiljande bearbetning
US6119741A (en) * 1999-02-10 2000-09-19 Rowe; David G. Rotary cutter head
DE19942461C1 (de) * 1999-09-06 2000-10-19 Tigra Hartstoff Gmbh Anorndung zum Einspannen von Hartmetallmesserplatten in Messerköpfen
US6811362B2 (en) 2000-10-25 2004-11-02 E. W. Tooling, Inc. Constant dimension insert cutting tool with regrindable profiled inserts
SE520997C2 (sv) * 2001-01-09 2003-09-23 Sandvik Ab Vändbart frässkär med rillförsedd kopplingsyta mot hållaren och centralt materialparti för fästorgan
DE10124653A1 (de) * 2001-05-18 2002-11-21 Hapro Holzbearbeitungs Werkzeu Formschlußverbindung zwischen Messerplatte und Rückenplatte oder Druckstück in Messerköpfen für die Holzbearbeitung
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US6702526B2 (en) * 2002-04-29 2004-03-09 Kennametal Inc. Cutting tool
US7237586B2 (en) * 2002-10-22 2007-07-03 Moulder Services, Inc. Rotatable cutting tool
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US7789598B2 (en) * 2005-07-12 2010-09-07 Kyocera Corporation Surface coated cutting tool
US7429150B2 (en) * 2006-05-31 2008-09-30 Kennametal Inc. Tool holder with spherical contact points
US7300231B1 (en) * 2006-12-04 2007-11-27 Hsing Chao Liu Cutting tool carrying device for machine tool
US20090071223A1 (en) * 2007-09-19 2009-03-19 Rogers Bryan L Staged Tooling Technology
CA2660209C (fr) * 2008-03-28 2017-04-25 Outils Gladu S.E.N.C. Tete de coupe rotative universelle avec dispositif de retro-serrage, dimensions de coupe constantes et pieces rapportees a poids constant pouvant etre meulees de nouveau
US9095854B2 (en) * 2011-06-06 2015-08-04 David Roy Chipper striker assembly
CN103231123B (zh) * 2013-05-08 2015-01-28 王洪国 一种刮渣机下刀套及刮渣机
CN103433092B (zh) * 2013-08-28 2015-08-19 湖南万通科技有限公司 给料破碎机、破碎齿辊及其破碎齿总成
CN103406182B (zh) * 2013-08-28 2016-07-06 湖南万通科技股份有限公司 破碎齿总成及其齿座
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1123786A2 (fr) * 2000-02-08 2001-08-16 Stehle GmbH & Co. KG Werkzeug- und Maschinenfabrik Tête de fraisage

Also Published As

Publication number Publication date
JPH08501989A (ja) 1996-03-05
DE59307750D1 (de) 1998-01-08
ES2110631T3 (es) 1998-02-16
WO1994007665A1 (fr) 1994-04-14
ATE160527T1 (de) 1997-12-15
JP2813604B2 (ja) 1998-10-22
EP0726838A1 (fr) 1996-08-21
DK0726838T3 (da) 1998-08-10
US5658101A (en) 1997-08-19
DE9213466U1 (fr) 1993-01-07

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