EP1123786A2 - Tête de fraisage - Google Patents

Tête de fraisage Download PDF

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Publication number
EP1123786A2
EP1123786A2 EP20000125514 EP00125514A EP1123786A2 EP 1123786 A2 EP1123786 A2 EP 1123786A2 EP 20000125514 EP20000125514 EP 20000125514 EP 00125514 A EP00125514 A EP 00125514A EP 1123786 A2 EP1123786 A2 EP 1123786A2
Authority
EP
European Patent Office
Prior art keywords
spacer
head according
knife
contact surface
cutter head
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.)
Withdrawn
Application number
EP20000125514
Other languages
German (de)
English (en)
Other versions
EP1123786A8 (fr
Inventor
Herbert Thomas
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.)
Werkzeug- und Maschinenfabrik Stehle & Co GmbH
Original Assignee
Werkzeug- und Maschinenfabrik Stehle & Co 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 Werkzeug- und Maschinenfabrik Stehle & Co GmbH filed Critical Werkzeug- und Maschinenfabrik Stehle & Co GmbH
Publication of EP1123786A2 publication Critical patent/EP1123786A2/fr
Publication of EP1123786A8 publication Critical patent/EP1123786A8/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • Y10T407/1908—Face or end mill
    • 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
    • Y10T407/1934—Rotary cutting tool including holder [i.e., head] having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/1938—Wedge clamp element
    • 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
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9464—For rotary tool

Definitions

  • the invention relates to a cutter head for woodworking machines Art explained in the preamble of claim 1.
  • Such cutter heads are used, for example, for milling, profiling or planing wood and depending on the required cutting performance and the machining material with compact knives from the usual cutting steels or be equipped with hard metal inserts, backed by support plates.
  • a cutter head for woodworking machines with a carbide insert and an underlying support plate is known from EP 726 838 B1.
  • the cutting plate is adjustable. To this end has the cutting plate on its back a micro-toothing, which in a corresponding Micro toothing of the support plate engages.
  • the micro gears extend axially with respect to the flight circle and point radially to a predetermined one Distance on. If the insert has to be reground, the Pressure of the cutting plate on the support plate released and the cutting plate around a tooth of the micro toothing is offset to the outside relative to the support plate. Thereby the insert can be reground so that the cutting edge after regrinding is back on the previous flight circle.
  • the invention is therefore based on the object of being simple to produce and simple to provide knife head to be mounted, which is a good support of the Offers knife unit in the radial direction.
  • Knife unit exactly specified by the preselected spacer, but not the There is a risk that this requirement will change during the installation of the knife unit accidentally changes the recording on the carrier. Through the spacer will continue good support is achieved on the carrier.
  • These spacers are both with knife units from a compact knife from the usual cutting steels as well for knife units, consisting of a carbide insert and a Support plate can be used.
  • the Spacers are advantageously present in a set described in claim 2.
  • the radial support is improved by the measure according to claim 3.
  • the spacer can in advance on the knife unit be attached so that the assembly of the knife unit is facilitated.
  • Claim 6 describes a first, preferred way, the spacer between to arrange the cutting edge and the holder.
  • Claim 7 describes a further possibility, the spacer between the To arrange the cutting edge and the holder.
  • the measure according to claim 8 ensures the position of the spacer improved with regard to the knife unit.
  • Claim 9 describes a particularly preferred embodiment of the spacer.
  • Claim 15 describes a preferred embodiment for a set of the spacers, which are used in the cutter head according to the invention.
  • the cutter head 1 shows a cutter head 1 designed according to the invention, which in the present case Embodiment is designed as a milling cutter for woodworking.
  • the cutter head 1 contains a cylindrical support 2 which in the woodworking machine by one Rotation axis 3, which extends perpendicular to FIG. 1, rotating in the direction of arrow A. is driven.
  • Distributed at equal intervals over the circumference of the carrier 2 are four recordings 4 for one each in the present exemplary embodiment Knife unit 5 is provided.
  • Each of the receptacles 4 is like these cutter heads usual, as extending in the axial direction with respect to the axis of rotation 3 and in the circumferential direction open groove formed. The flanks trailing in direction of rotation A.
  • each of the receptacles 4 are support surfaces for the knife units 5 formed, the flanks 4a of all the receptacles 4 having the same orientation the axis of rotation 3 and the circumference of the support 2 and, when used of four knife units 5, perpendicular to each other.
  • On the flanks 4a can be arranged the usual micro toothing, in the illustrated embodiment the support against centrifugal forces in operation and as a positioning aid for Installation of the knife unit is used, and indicated in Fig. 1 by a dash-dotted line is.
  • each receptacle 4 opposite the flanks 4a are marked by passes through an opening 6 in which a fastening bolt 7 or the like.
  • a fastening bolt 7 or the like For fastening the knife unit 5 received in the carrier 2 and under the surface of the carrier 2 can be sunk.
  • each receptacle 4 contains a contact surface 4c, which is advantageous is slightly increased compared to the remaining lower boundary surface of the receptacle 4 and is exactly aligned with the flank 4a with respect to its angular position, i.e. in the present Embodiment forms a right angle with the flank 4a.
  • each knife unit 5 contains a cutting insert 8 made of hard metal with a cutting edge 8a, a support plate behind the cutting plate 8 9, one interposed between the bolt 7 and the cutting plate 8 Pressure jaws 10 and in a manner described below as an adjusting and readjusting device acting spacer 11, which is detachable by a detent spring 12 with the Support plate 9 is connected.
  • Each of the knife units 5 is arranged in its receptacle 4 so that the cutting edges 8a of all cutting plates 8 on a common flight circle F with the diameter D revolve around the axis of rotation 3.
  • the diameter D of the flight circle F should preferably also be maintained after regrinding the cutting edges 8a.
  • each knife unit 5 The components of each knife unit 5 are described below with reference to FIGS. 2 to 9 explained.
  • the support plate 9 can be used to interlock the Flank 4a contain corresponding teeth 9a, so that in addition to the contact pressure through the bolt 7 also a positive engagement between the flank 4a of the receptacle 4 and the support plate 9 results.
  • the support plate 9 On the opposite of the toothing 9a Is the support plate 9 with the support surface 9b for the Provide insert 8.
  • a recess in the support surface 9b 13 In that area of the support plate 9 which is the bottom facing the receptacle 4 is a recess in the support surface 9b 13 incorporated, which extends over the entire axial width of the support plate 9 in the direction the axis of rotation 3 extends and inwards, i.e.
  • the recess 13 is for receiving the spacers shown in FIGS. 4 to 6 11 trained.
  • the spacer 11 includes a strip-shaped base body 15 a top 15a and a also strip-shaped projection 16, which of a protrudes from the two wider sides of the base body 15 and preferably in one piece is formed with the base body 15.
  • Base body 15 and projection 16 have preferred the same axial length as the support plate 9.
  • a first contact surface 16a is formed on the top of the projection 16.
  • the bottom of tab and base body are aligned with one another and form a second contact surface 15b.
  • the top 15a of the base body 15 corresponds essentially in width and length the boundary surface 9c of the recess 13 of the support plate 9, so that the boundary surface 9c is supported on the upper side 15a when the spacer 11 is received in the recess 13, and when between the support plate 9 and the flank 4a has no teeth. If a toothing is provided, so can the two surfaces 9c and 15a have a distance from each other, the should be less than or equal to half the tooth pitch (about 0.8 mm). In both cases the projection 16 protrudes over the support surface 9b, so that the cutting plate 8 with its inwardly facing contact surface 8b on the contact surface 16a gets up.
  • the spacer 11 is provided with grooves 17 for receiving the Detent spring 12 are formed as part of a bore in plan view, i.e. undercut Have boundary surfaces.
  • FIG. 6 shows a set of six spacers 11.1, 11.2., 11.3, 11.4, 11.5 and 11.6, each of which has an identically dimensioned base body 15, but with spaced distances h (h 1, h 2, h 3, h 4, h 5, h 6 ) show between the contact surface 15b coming into contact with the contact surface 4c in the receptacle 4 and the contact surface 16a on which the contact surface 8b of the cutting plate 8 rests.
  • the user only has that Take the knife unit 5 out of the receptacle 4, if necessary already used spacer 11 by releasing the detent spring 12 from the support plate 9 separate the spacer of the next dimension, for example the spacer 11.2 to attach again to the support plate 9 via the detent spring 12 Insert the cutting plate 8 and tighten the bolts 7 again in the holder 4 to attach. Then the cutting edges 8a can follow and the predetermined flight circle diameter D are ground again.
  • the spacers 11 are large enough to include a clearly visible label can to facilitate the replacement work and ensure that always use the spacer of the immediately next dimension, so that an unintentional raising of the cutting plate can no longer occur.
  • the cutting plate 8 has two parallel, grooves 18 extending in the direction of rotation of the axis of rotation 3, which at one point the cutting plate 8 are arranged, which are within the receptacle 4 and Pressure jaws 10 is opposite, even if the cutting plate 8 on the the last possible measure was reground. It is not absolutely necessary that the Grooves 18 are made true to size and exactly as the toothing between the support plate 9 and the flank 4a.
  • the pressure jaw 10 contains the cutting plate 8 facing surface 10a a projection 19 which is dimensioned so that it in the Grooves 18 can immerse while the surface 10a presses against the cutting plate 8.
  • the projection 19 also extends over the entire axial length of the pressure jaw 10th
  • the surface 10a there is an engagement surface 10b on the pressure jaw 10 the Bolzen.7 provided that flat, straight and in the radial direction to the flight circle F so is long that the bolt 7 finds a variety of points of attack.
  • the target 10b and the surface 10a are inclined to each other by an acute angle ⁇ , wherein the location with the greatest distance between surfaces 10a and 10b radially with respect of the flight circle F is arranged on the inside.
  • the angle ⁇ is dimensioned that the surface 10b in the installed state of the pressure jaw 10 essentially extends in the direction of the diameter D of the flight circle F about the axis of rotation 3.
  • the pressure jaw 10 can thus be engaged by its projection 19 in one of the two grooves 18 beforehand in its position with respect to the cutting plate 8 and support plate 9 are positioned so that the insertion is much easier becomes.
  • the radially outer one or the radially inner groove for a positive engagement of the projection 19 selected the point of attack of the bolt 7 on the surface 10b continuously is changeable.
  • the support plate 109 differs from that Support plate 9 by the arrangement and configuration of a recess 113 which in This embodiment is designed as a groove that extends over the entire extends axial length of the support plate 109.
  • the recess 113 contains a radial one inward-facing contact surface 109c and a radially outward-facing contact surface 109d.
  • the support plate 109 can also have a back toothing 109a be provided.
  • the radially inward-facing side of the Support plate 109 below the recess 113 with a further contact surface 109e be provided with which the support plate 109 on a contact surface 4c of the receptacle 4 supports.
  • the support plate 109 has a screw guide 114 provided to screw on the spacer 111.
  • the screw guide 114 can a slider, not shown, be added by a support plate 109 and a screw opening 117 in the spacer 111 penetrating screw in the predetermined position is set.
  • Each of the spacers 111 has the same, strip-shaped base body 115 on whose dimensions are selected so that it is received in the recess 113 is, with the outward and inward facing boundary surfaces 115a and 115b of the base body 15 on the inwardly and outwardly facing contact surfaces Strike 109c and 109d of the support plate 109.
  • the base body 115 On the side facing the cutting plate 8, the base body 115 has a strip-shaped projection 116 provided on its radially outwardly facing Side carries the contact surface 116a for the contact surface 8b of the cutting plate 8. This Projection 116 protrudes beyond the support surface 109d of the support plate 9.
  • Analogous to the first exemplary embodiment is a set of spacers 111 (111.1, 111.2 .... 111.6) in different dimensions, ie with different distances h (h 1, h 2 ⁇ h 6 ) between the contact surface 116a and the contact surface 115b.
  • FIG. 14 shows a further exemplary embodiment of a cutter head 101 in a representation 1, but which contains the knife unit according to FIGS. 10 to 13.
  • the support plate 109 is provided with a back toothing 109a, which in one Back teeth 104a engages a slightly modified receptacle 104.
  • a pin 120 is provided, which is in the base of the receptacle 104 to extends under the radially inner surface 109e of the support plate 109, but one Distance to the surface 109e, which is less than or equal to half the tooth pitch of the Teeth 109a and 104a is and thus in embodiments with back teeth serves as an assembly aid that the insertion of the knife unit 105 to the predetermined Depth relieved.
  • the support plate 109 and the body 102 of the cutter head 101 carry one from the outside Visually visible line marking 121, through which the correct position of the support plate 109 is marked in the recording 104.
  • This embodiment is based on thus the cutting plate 8 with its lower edge 8b on the contact surface 116a of the spacer 111 and this over the surfaces of the recess 113 and the back teeth 109a on the toothing 104a of the receptacle 104 in the carrier 102.
  • the marking 121 that the support plate 109 is always is in the same radial position in the receptacle 104, no matter which of the Spacers 111.1 to 111.6 is used.
  • Fig. 14 also shows a modified pressure jaw 110, the bolt 107 facing surface 110a is arranged in a recess 122 which in Direction on the axis of rotation 3 of the carrier 102 is open and radially outward through a Paragraph 122a is limited.
  • the recess 122 is arranged so that the surface 110a again runs essentially radially.
  • the invention is a modification of the exemplary embodiments described and drawn not only applicable to hard metal inserts, but for example also for knives from the usual cutting steel (HS, HSS), in which case the Contact surface for support on the spacer on the knife body directly arranged is.
  • the invention is furthermore not only applicable to milling cutters, but can, for example can also be used for planer knives.
  • the structural design is also the spacers are not limited to the illustrated embodiments.
  • the support plate is conceivable to be provided with a large number of parallel groove receptacles into which one and the same Spacer can be inserted at different heights.
  • the spacer can also be used 4 to 6 are screwed to the support plate or the knife body.
  • Both the strip-shaped projection 16, 116 on the spacer 11, 111 as well the grooves 18 in the cutting plate 8 can only be used as partial supports in the axial direction e.g. B., be designed for a two-point support.
  • This shape of the grooves can without any problems even with the sintered metallurgical production of the insert be molded in so that a cutting that is only possible with special tools Familiarization is not necessary.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Details Of Cutting Devices (AREA)
EP20000125514 2000-02-08 2000-11-21 Tête de fraisage Withdrawn EP1123786A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10005467 2000-02-08
DE2000105467 DE10005467A1 (de) 2000-02-08 2000-02-08 Messerkopf

Publications (2)

Publication Number Publication Date
EP1123786A2 true EP1123786A2 (fr) 2001-08-16
EP1123786A8 EP1123786A8 (fr) 2001-10-31

Family

ID=7630181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000125514 Withdrawn EP1123786A2 (fr) 2000-02-08 2000-11-21 Tête de fraisage

Country Status (3)

Country Link
US (1) US6378578B2 (fr)
EP (1) EP1123786A2 (fr)
DE (1) DE10005467A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800008191A1 (it) * 2018-08-27 2020-02-27 Twt Srl Dispositivo di fissaggio degli inserti taglienti di frese da taglio

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10234030A1 (de) * 2002-07-26 2004-02-05 Widia Gmbh Schneidwerkzeug für die spanabhebende Bearbeitung
EP1888282A1 (fr) * 2005-01-06 2008-02-20 Safety Production Plaquette de coupe a glissiere de cadrage
CH709488A1 (de) 2014-04-14 2015-10-15 Oertli Werkzeuge Ag Werkzeugkopf und Verfahren zum Einsetzen und Spannen einer Schneidplatte, sowie Schneidplatte.
CH713020A1 (de) * 2016-10-10 2018-04-13 Oertli Werkzeuge Ag Messerkopf und Messerkopfsystem, insbesondere für eine Holzbearbeitungsmaschine.
CN107803892B (zh) * 2017-11-24 2023-06-09 福建省富尔邦自动化设备有限公司 一种双头自动斜榫机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444233A (en) * 1982-05-17 1984-04-24 Dorothy W. Miller Knife holder in woodworking machine
US4658875A (en) * 1986-03-24 1987-04-21 Bosko Grabovac Knife holder
EP0345570A1 (fr) * 1988-06-07 1989-12-13 HAPRO GmbH Dispositif pour le fixage amovible de couteau en métal dur sur têtes tournantes pour travailler le bois ou matériel similaire
WO1997013627A1 (fr) * 1995-10-12 1997-04-17 Bmh Wood Technology Ab Dispositif et procede concernant une machine hache-bois
EP0726838B1 (fr) * 1992-10-07 1997-11-26 Gebruder Leitz Gmbh & Co Tete porte-lames

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751006A (en) * 1951-12-12 1956-06-19 United States Steel Corp Knife-clamping means for rotary shear
EP0156934A1 (fr) * 1984-04-02 1985-10-09 Fritz Vogelmann Outil pour l'usinage de pièces non-métalliques
PT86371B (pt) * 1987-12-15 1994-07-29 Abreu Alfredo Ferreira De Ferramenta para aplainar para uma maquina para trabalhar a madeira
US6189584B1 (en) * 1998-08-12 2001-02-20 Douglas Scott Cayce Disposable carbide blade assembly for universal rotary cutter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444233A (en) * 1982-05-17 1984-04-24 Dorothy W. Miller Knife holder in woodworking machine
US4658875A (en) * 1986-03-24 1987-04-21 Bosko Grabovac Knife holder
EP0345570A1 (fr) * 1988-06-07 1989-12-13 HAPRO GmbH Dispositif pour le fixage amovible de couteau en métal dur sur têtes tournantes pour travailler le bois ou matériel similaire
EP0726838B1 (fr) * 1992-10-07 1997-11-26 Gebruder Leitz Gmbh & Co Tete porte-lames
WO1997013627A1 (fr) * 1995-10-12 1997-04-17 Bmh Wood Technology Ab Dispositif et procede concernant une machine hache-bois

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201800008191A1 (it) * 2018-08-27 2020-02-27 Twt Srl Dispositivo di fissaggio degli inserti taglienti di frese da taglio
WO2020044382A1 (fr) * 2018-08-27 2020-03-05 Twt S.R.L. Dispositif de blocage de couteaux de coupe d'un moulin à couteaux

Also Published As

Publication number Publication date
US6378578B2 (en) 2002-04-30
DE10005467A1 (de) 2001-08-16
US20010017170A1 (en) 2001-08-30
EP1123786A8 (fr) 2001-10-31

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