EP1315603B1 - Hobelmesserkopf - Google Patents

Hobelmesserkopf Download PDF

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Publication number
EP1315603B1
EP1315603B1 EP01961507A EP01961507A EP1315603B1 EP 1315603 B1 EP1315603 B1 EP 1315603B1 EP 01961507 A EP01961507 A EP 01961507A EP 01961507 A EP01961507 A EP 01961507A EP 1315603 B1 EP1315603 B1 EP 1315603B1
Authority
EP
European Patent Office
Prior art keywords
cutting element
wall
grooves
recess
peg
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
EP01961507A
Other languages
English (en)
French (fr)
Other versions
EP1315603A1 (de
Inventor
Anders Engman
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1315603A1 publication Critical patent/EP1315603A1/de
Application granted granted Critical
Publication of EP1315603B1 publication Critical patent/EP1315603B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention refers to a planing cutter for planing of wood as described in the introductory part of claim 1, (see for example DE-A-19 818 625).
  • a planing cutter should preferably have a relatively large number of seats with cutting elements.
  • a large number of cutting elements allows larger cutting capacity, better surface smoothness of the planed faces and lower noise level.
  • each cutting element is located in a recessed seat in the cutter and clamped against one of the walls of the recess.
  • Such a clamping constitutes a force defined connection, where the defining force is a frictional force.
  • the clamping it is previously known to supplement it with a shape defined connection.
  • EP 455 196 shows in figure 1 how a cutting element is clamped to a recess in the body of the cutter by a clamping wedge.
  • the cutting element is further locked by a peg located in one wall of the recess and penetrating through a hole in the element.
  • the cutting element is then not adjustable in the radial direction.
  • this type of clamping has the disadvantage of requiring providing of a hole through the cutting element, which reduces its strength and increases its cost of manufacture.
  • WO 94/07665 describes a clamping device with a positioning device for the cutting element.
  • One wall of the recess is furthermore provided with serrations matching serrations on one wall of the cutting element.
  • the cutting element can be radially relocatod and placed in a new operative position where the serrations match again. Since this device requires that the wall of the recess as well as one side of the element are provided with serrations, it will be complicated and costly from a manufacturing viewpoint.
  • CA 2135146 describes a device where the cutting element is clamped by a tensioning element. Furthermore, one side of the cutting element is provided with a groove interacting with a groove in a support plate rigidly attached to the cutter body. The interaction is by means of a locking element protruding into the grooves of the cutting element as well as the support plate. This locks the cutter element to the recess by a shape connection.
  • the support plate has a number of grooves to let the locking element interact with an arbitrary groove of the support plate. In this way the radial position of the cutting element can be adjusted.
  • This device must also be regarded as complicated to manufacture, since the cutting element must be provided with a groove, and the support plat with a number of grooves.
  • the purpose of the present invention is to provide a planing cutter which in a simpler way than previously known will allow a stable and safe clamping of the cutting element, even at high rotational velocities, and which will permit adjustment of the radial position of the cutting element. According to the invention, this purpose is achieved when a planing cutter of the kind described in the introductory part of claim 1 is provided with the special features described in the characterizing part of the claim.
  • a safe shape defined locking of the cutting element is achieved, capable of resisting high rotational velocities without noticeable outward displacement of the cutting element. Since the cutting element has a range of grooves at each lateral edge, the radial adjustment is easily achieved. Such grooves at the lateral edges of the cutting element can be easily provided by profile grinding. Provision of pegs at the wall of the recess is also easily achieved. According to the present invention stable clamping and radial adjustability can be combined in a simpler and less costly way than in prior art.
  • the peg or pegs protrude from the wall of the recess means that they may protrude directly from the wall. It should also be interpreted so that the pegs can protrude from a separate element rigidly connected to the wall, such as a plate adjoining and attached to the wall by screws.
  • two grooves within each range of grooves each interact with a peg protruding from the wall of the recess.
  • the provision of two pegs on each side provides improved stability and safety of the clamping.
  • each peg has a circular cross-section. This allows a simple mechanical design, optimal strength and simple removal from the wall.
  • each groove has a circular arc profile. This ensures good contact between groove and peg, to spread the force over a larger surface.
  • each peg is fastened to the wall by having its end portion inserted in a drilled hole in the wall. This makes attachment of the peg to the wall very simple.
  • the clamping device comprises a clamping element in contact with one face of the cutting element and covering both ranges of grooves. With such a clamping element the risk of loosening of the pegs is eliminated.
  • FIG 1 a radial section of a planing cutter according to the invention.
  • the cutter comprises a cutter body 1 arranged to rotate in the direction of arrow A when planing.
  • a number of recesses 3 in the example shown twelve such recesses.
  • each recess is located one cutting element 7 and one clamping device 2.
  • a chip-breaker 23 made as a arcuate ditch.
  • the clamping device 2 comprises a wedge-shaped body 21 and a clamping screw 22. Their function will be further described below in connection with figure 3.
  • the wedge-shaped body keeps the cutting element 7 pressed against the front wall 4 of the recess, locking the element between the wedge-shape body 21 and the wall 4.
  • the cutting element is laterally limited by two lateral edges, and in each of those a range of grooves 14 is provided.
  • a range of grooves 14 is provided in the front wall 4 of the recess 3 .
  • holes 19,20 are provided in the front wall 4 of the recess 3 , and in each of those a peg 17,18 is located, protruding from the wall 4.
  • Each peg 17,18 interacts with one groove each 15,16 in the range of grooves.
  • FIG. 2 which is a section along the line II-II in figure 1 further explains the shape of the cutting element 7.
  • the figure shows the rear face 13 of the cutting element 7, the face oriented to the rear relative to the direction of rotation.
  • the cutting edge 8 At the upper part of the figure is the cutting edge 8 and in the bottom part the lower edge 9.
  • This figure clearly shows how each lateral edge 10,11 of the cutting element is provided with a range of grooves 14a,14b.
  • the number of grooves may of course be different, and the profile may be otherwise.
  • the profile may be V-shaped for instance.
  • FIG 2 is also indicated the front wall 4 of the recess in the cutter body.
  • the recess is somewhat broader than the length of the cutting element 7, to let an outer part of the front wall 4 extend a few mm past each lateral edge 10,11.
  • the pegs are shown as cylindrical tubes.
  • the cutting element 7 is shown in figures 1 and 2 as new, without having been re-sharpened, and its lower edge is then close to the bottom of the recess.
  • One common size of a cutting element as in the example shown is 106 x 35 mm.
  • the grooves in the range of grooves 14a,14b may have a radius of 1 mm.
  • the pegs 17a,18a,17b,18b may then have a diameter of 2 mm and a total length of 10,3 mm.
  • the centre distance between adjacent pegs 17a,18a on one side may be 4 mm.
  • FIG 3 which is similar to figure 1 but in enlarged scale the cutting element is shown in its radially outermost position, where the inner peg 18 interacts with the innermost groove.
  • a clamping element 21 covers the openings of the grooves at the rear face 13 of the cutting element.
  • the clamping element 21 has a width corresponding to the breadth of the recess.
  • the clamping element 21 is wedge-shaped and the recess3 also has a corresponding wedge shape section.
  • the clamping element is loosened or tightened with one or more clamping screws 22. By screwing them inward the clamping element 21 is pressed upward to contact against the rear wall 5 of the recess 3 and against the rear side 13 of the cutting element 7, thereby locking the cutting element 7 between the clamping element 21 and the front wall 4 of the recess.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Details Of Cutting Devices (AREA)
  • Knives (AREA)
  • Soil Working Implements (AREA)
  • Harvester Elements (AREA)
  • Shearing Machines (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Handling Of Sheets (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (6)

  1. Hobelmesserkopf bzw. Hobel, umfassend einen zylindrischen Messerkopfkörper (1) mit Ausnehmungen (3), die an seiner einhüllenden Oberfläche zur Verfügung gestellt sind, wobei die Ausnehmungen bzw. Vertiefungen (3) durch eine vordere Wand (4), eine rückwärtige Wand (5) oder einen Boden (6) begrenzt sind, wobei jede Ausnehmung ein Schneidelement (7) mit einer Schneidkante (8), einer unteren Kante (9), zwei seitlichen Kanten (10, 11), einer vorderen Fläche bzw. Seite (12) und einer rückwärtigen Seite (13) enthält, wobei die Ausnehmungen (3) auch eine Klemmvorrichtung (2) enthalten, dadurch gekennzeichnet, daß jede seitliche Kante eines Schneidelements einen Bereich (14) von Rillen bzw. Nuten aufweist und wenigstens eine Nut (15) in jedem Bereich mit einem Zapfen (17, 18) zusammenwirkt, der von einer Wand (4, 5) der Ausnehmung bzw. Vertiefung (3) vorragt, und daß die Anzahl von Nuten (15, 16) in jedem Bereich, die mit einem Zapfen (17, 18) zusammenwirken, kleiner als die Gesamtanzahl von Nuten in dem Bereich (14) ist.
  2. Hobelmesserkopf nach Anspruch 1, dadurch gekennzeichnet, daß zwei Nuten (15, 16) in jedem Bereich mit einem Zapfen (17, 18) zusammenwirken, der von der Wand vorragt.
  3. Hobelmesserkopf nach einem der Ansprüche 1 - 2, dadurch gekennzeichnet, daß jeder Zapfen (17, 18) einen kreisförmigen Querschnitt aufweist.
  4. Hobelmesserkopf nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß jede Nut (14) einen Kreisbogenabschnitt aufweist.
  5. Hobelmesserkopf nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß jeder Zapfen (17, 18) an der Wand (4) festgelegt ist, indem ein Endabschnitt in ein Loch (19, 20) eingesetzt ist, das in die Wand gebohrt ist.
  6. Hobelmesserkopf nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß die Klemmvorrichtung (2) ein Klemmelement (21) in Kontakt mit einer Seite (13) des Schneidelements (7) umfaßt und beide Bereiche von Nuten (14) abdeckt.
EP01961507A 2000-08-21 2001-08-20 Hobelmesserkopf Expired - Lifetime EP1315603B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0002961A SE517196C2 (sv) 2000-08-21 2000-08-21 Hyvelkutter
SE0002961 2000-08-21
PCT/SE2001/001775 WO2002016095A1 (en) 2000-08-21 2001-08-20 Planing cutter

Publications (2)

Publication Number Publication Date
EP1315603A1 EP1315603A1 (de) 2003-06-04
EP1315603B1 true EP1315603B1 (de) 2006-02-15

Family

ID=20280744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01961507A Expired - Lifetime EP1315603B1 (de) 2000-08-21 2001-08-20 Hobelmesserkopf

Country Status (8)

Country Link
EP (1) EP1315603B1 (de)
JP (1) JP4903348B2 (de)
AT (1) ATE317752T1 (de)
AU (1) AU2001282768A1 (de)
CA (1) CA2420223C (de)
DE (1) DE60117275T2 (de)
SE (1) SE517196C2 (de)
WO (1) WO2002016095A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005040128B3 (de) * 2005-08-25 2007-05-03 Erhophal Maschinenmesser Gmbh Befestigungsvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703610B1 (fr) * 1993-04-06 1995-07-07 Aob Plaquette de coupe et outil équipé de telles plaquettes .
DE9415111U1 (de) * 1994-06-20 1994-12-08 TIGRA Hartstoff GmbH, 86405 Meitingen Vorrichtung zur lösbaren Halterung von Hartmetallschneidplatten an Messerköpfen
JPH1110434A (ja) * 1997-06-24 1999-01-19 Mitsubishi Materials Corp スローアウェイ式転削工具
SE514591C2 (sv) * 1997-10-15 2001-03-19 Sandvik Ab Fräsverktyg
DE19818625A1 (de) * 1998-04-25 1999-10-28 Utensilea S A S Messerhaltevorrichtung in Messerköpfen für die Holzbearbeitung

Also Published As

Publication number Publication date
JP2004506544A (ja) 2004-03-04
CA2420223A1 (en) 2002-02-28
WO2002016095A1 (en) 2002-02-28
EP1315603A1 (de) 2003-06-04
SE517196C2 (sv) 2002-05-07
SE0002961L (sv) 2002-02-22
AU2001282768A1 (en) 2002-03-04
DE60117275T2 (de) 2006-10-12
DE60117275D1 (de) 2006-04-20
ATE317752T1 (de) 2006-03-15
SE0002961D0 (sv) 2000-08-21
JP4903348B2 (ja) 2012-03-28
CA2420223C (en) 2009-11-10

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