EP0449896B1 - Machine d'enlevement de copeaux - Google Patents

Machine d'enlevement de copeaux Download PDF

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Publication number
EP0449896B1
EP0449896B1 EP90900760A EP90900760A EP0449896B1 EP 0449896 B1 EP0449896 B1 EP 0449896B1 EP 90900760 A EP90900760 A EP 90900760A EP 90900760 A EP90900760 A EP 90900760A EP 0449896 B1 EP0449896 B1 EP 0449896B1
Authority
EP
European Patent Office
Prior art keywords
cutter
channel
radially
fact
removing machine
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
EP90900760A
Other languages
German (de)
English (en)
Other versions
EP0449896A1 (fr
Inventor
Justus Lamprecht
Wolfgang Nagel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0449896A1 publication Critical patent/EP0449896A1/fr
Application granted granted Critical
Publication of EP0449896B1 publication Critical patent/EP0449896B1/fr
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 invention relates to a cutting machine according to the preamble of claim 1.
  • a knife holder for a planing machine is already known, in which the knife is clamped in a U-shaped groove by means of two profile parts.
  • the profile parts do not completely close the groove in the knife shaft so that chips can get caught in the gaps. Since these hinder the planing work, they are usually removed by hand. There is a risk that the user injures himself on the sharp planing knives. It is also unfavorable that the screws for tensioning the knife can only be operated with an open-end wrench, which has to be implemented several times when tightening.
  • the cutting machine according to the invention with the characterizing features of claim 1 has the advantage that the chip flow is improved and no chips can get caught in the knife carrier and that noise is reduced.
  • the knife cutting device is very simple from only two profile parts constructed, the dimensional accuracy of which does not require any high requirements. The same also applies to the groove in the knife carrier, which, due to its rounded shape which is favorable in terms of production, weakens the knife carrier only minimally, as a result of which only very low tensions are caused in the knife carrier.
  • FIG. 1 shows a cutting machine designed as a planer
  • FIG. 2 shows a knife carrier in the form of a plane shaft
  • FIG. 3 shows a cross section through the knife carrier according to line III-III in FIG. 2
  • FIG. 4 also shows a cross section through a second exemplary embodiment Knife holder.
  • the electrically driven planer 1 has a support surface 2 for abutment against a workpiece, over which a planer shaft 3 projects with the knives 4 inserted (see FIG. 2).
  • the plane shaft 3 rotates in the direction of the arrow and consists of a knife carrier 5, at least one radially further outward designed as a support bar 6 Profile part, a radially outer profile part designed as a clamping strip 7 and a knife 4 designed as a turning knife.
  • the three parts 5, 6, 7 are to be manufactured as drawn profile parts, the knife carrier 5 preferably made of aluminum and the profile parts 6, 7 made of steel .
  • the terminal block 7 has three threaded bores 8 and two through holes 9 arranged in its end regions.
  • the knife carrier 5 preferably has two grooves 12 running in its axial direction, which have mutually facing side walls 13, 14, so that the groove 12 narrows outwards (see FIG. 3).
  • the side walls 13, 14 merge into fillets 15, 16 with a large diameter into the base area 17 of the groove 12.
  • the side wall 14 has a projection 18 with a rounded surface at the end of the groove in order to avoid sharp edge pressures.
  • the L-shaped support bar 6 inserted into the groove 12 has two legs 20, 21.
  • the leg 20 bears on the one hand on the side wall 13 and on the other hand on the knife 4.
  • a raised bar 22 facing the knife 4 on the leg 20 engages in a recess 23 of the knife 4.
  • the support strip 6 has an indentation 24 and then a bulge 25.
  • In the leg 21 there are two threaded bores 26, into which Allen screws 27 can be screwed for setting the flight circle diameter.
  • the screws 27 are supported against the base surface 17 of the groove 12.
  • Furthermore, in the leg 21 there are three depressions 28 which correspond to the threaded bores 8, but which are not absolutely necessary for the function of the clamping device 30 between the support strip 6 and the clamping strip 7.
  • the terminal block 7 has a cuboid-like shape with an inwardly curved surface 32 that is closed except for the bores 8, 9.
  • the terminal block rests on the one hand on the side wall 14 of the groove 12 and on the opposite side on the knife 4. Below the knife 4 the terminal strip 7 has a projection 33 which engages in the indentation 24 of the support strip 6.
  • the flight circle diameter of the knife edge 4 can be set independently of its clamping by means of the screws 27.
  • the screws 31 are screwed against the support bar 6, so that the clamping bar 7 is pivoted about an axis located in the region of the projection 33.
  • the strip 7 is pressed on the one hand against the knife 4 and on the other hand against the projection 18, a closed surface between the knife 4 and the side wall 14 of the groove 12 always being retained.
  • the support bar 6 is simultaneously pressed against the side wall 13 of the groove 12, the side wall 13 giving way under certain circumstances if the material of the knife carrier has a high elasticity, as in the exemplary embodiment.
  • the side wall 13 is inclined more inward by a small angle ⁇ than corresponds to the outside of the leg 20.
  • the side wall 13 and the leg 20 then lie seamlessly against one another.
  • the second exemplary embodiment according to FIG. 4 differs from the first in other clamping and adjusting devices.
  • the same reference numbers have therefore been used for the same parts and reference numbers increased by 100 for similar parts.
  • the support strip 106 has in its leg 121 an externally open bore 135 extending in its longitudinal direction.
  • this bore 135 there is a rod-shaped eccentric 136 with a hexagon recess 137 for the tool engagement.
  • the eccentric 136 is supported in a recess 138 in the groove 12 and is used to adjust the flight circle diameter of the knife edge 4.
  • the terminal block 107 has a longitudinal bore 140 corresponding to the bore 135.
  • a rod-shaped eccentric 141 with hexagon recesses 142 at the ends is likewise inserted into this.
  • the eccentric 141 is mounted in a trough 143 in the support bar 106.
  • a rounded projection 118 is arranged here on the terminal strip 107.
  • the function of the second embodiment corresponds exactly to that of the first, with the only difference that for clamping and adjusting with the tool, the screw heads are not engaged from the surface 32, but in the axial direction to the knife carrier 105 from the side.

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)

Abstract

Machine d'enlèvement de copeaux à système de serrage des lames. Dans une machine d'enlèvement de copeaux, notamment un rabot, on veut réduire le risque de blessure lors du retrait de copeaux coincés dans l'arbre de rabotage et faciliter le montage de la lame, tout en réduisant le bruit. A cet effet, on serre au moyen d'un dispositif de serrage (30) deux pièces profilées (6, 7) dans une rainure (12) du porte-lame (5), la lame (4) étant simultanément retenue. Les pièces profilées (6, 7) forment dans la rainure (12) une surface fermée sans lacunes. Un réglage ajustable au moyen de vis (27) indépendamment du dispositif de serrage (30) permet d'ajuster le diamètre du cercle de rotation de la lame (4). On peut utiliser ce système de serrage de la lame pour toutes machines d'enlèvement de copeaux, telles que rabots ou fraises, dans lesquelles il faut serrer des lames.

Claims (7)

  1. Machine d'enlèvement de copeaux, notamment rabot à main pour le travail du bois, comportant un porte-outil (5) entraîné en rotation autour d'un axe de rotation, qui présente à sa périphérie, au moins une rainure à section en forme de U (12) dont l'ouverture diminue radialement vers l'extérieur, et qui loge un couteau (4) entre chaque fois deux pièces profilées (6, 106, 7, 107) serrées l'une par rapport à l'autre et formant une articulation commune (24 ; 33), et, pour bloquer le diamètre de la trajectoire des pièces profilées (6, 106, 7, 107), en commun avec le couteau (4) et à l'aide d'une vis de réglage (27, 137) qui s'appuie au fond de la rainure, sont réglables radialement de manière continue, caractérisée en ce que les deux pièces profilées (6, 106, 7, 107) forment un organe à levier coudé à deux bras et, entre les branches dirigées radialement vers l'extérieur (20, 121, 7', 107') des pièces profilées (6, 7), se trouve serré le couteau (4) tandis qu'en même temps le corps de levier coudé à deux branches est pressé sur deux lignes dirigées axialement, chacune sur une pièce profilée (6, 7), par une vis (27), entre le levier coudé situé radialement à l'intérieur (6, 106) et le fond de rainure (17, 138) contre les bords extérieurs en regard de la rainure (18) allant en se rétrécissant, et partant du fond de la rainure, entre la paroi de rainure (13) et une paroi extérieure (20) dirigée radialement de la pièce profilée (6, 106) située radialement à l'intérieur, il y a suivant l'angle (α) un intervalle et la paroi de rainure (13) correspondante est disposée tangentiellement par rapport à la ligne de contact entre l'autre pièce profilée (7, 107) et l'autre paroi de rainure (14, 18, 118).
  2. Machine d'enlèvement de copeaux selon la revendication 1, caractérisée en ce que les deux pièces profilées sont réalisées sous la forme de corps à levier coudé à deux bras, placés l'un dans l'autre (6, 106, 7, 107) dont l'articulation commune (24, 33) se situe au niveau de son arête intérieure ou extérieure et dont les branches alignées de manière essentiellement tangentielle par rapport à l'axe de rotation, sont écartées l'une de l'autre par un dispositif de serrage (30, 31, 141) pour induire le passage des efforts entre le couteau (4) et les branches dirigées essentiellement de manière radiale par rapport à l'axe de rotation des corps en forme de levier coudé à deux bras (6, 106, 7, 107), pour arriver simultanément avec chaque fois des lignes situées radialement à l'extérieur, dirigées axialement, sur chaque corps de levier coudé à deux bras (6, 106, 7, 107), à une transmission des efforts sur les bords situés radialement à l'extérieur et appartenant à la rainure (12).
  3. Machine d'enlèvement de copeaux selon l'une des revendications précédentes, caractérisée en ce que la pièce profilée (6, 106) située à l'intérieur est réglable radialement à l'aide d'un élément d'ajustage, notamment d'une vis (27) ou d'un excentrique (136) par rapport au porte-couteau (5, 105).
  4. Machine d'enlèvement de copeaux selon l'une des revendications précédentes, caractérisée en ce que les têtes des vis (27, 31) ou l'excentrique (136, 141) sont réglables dans leur direction axiale à l'aide d'un outil, notamment d'une clef alène ou d'une clef que l'on enfonce.
  5. Machine d'enlèvement de copeaux selon l'une des revendications précédentes, caractérisée en ce que la pièce profilée (6, 106), située à l'intérieur, a une forme sensiblement en L et s'appuie par le côté extérieur de l'une (20) de ses branches contre une paroi latérale (13) de la rainure (12) et par le côté intérieur de cette branche (20) contre le couteau (4).
  6. Machine d'enlèvement de copeaux selon la revendication 5, caractérisée en ce que la première pièce profilée (6, 106) présente dans ses coins une cavité (24) dans laquelle vient prendre une partie en saillie (33) de la pièce de profilé (7, 107) située à l'extérieur.
  7. Machine d'enlèvement de copeaux selon l'une des revendications précédentes, caractérisée en ce que le porte-couteau (5, 105) est en aluminium et les pièces profilées (6, 106, 7, 107) sont en un matériau ayant une élasticité moindre.
EP90900760A 1988-12-23 1989-12-14 Machine d'enlevement de copeaux Expired - Lifetime EP0449896B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3843466A DE3843466A1 (de) 1988-12-23 1988-12-23 Zerspanungsmaschine
DE3843466 1988-12-23
PCT/DE1989/000768 WO1990007405A1 (fr) 1988-12-23 1989-12-14 Machine d'enlevement de copeaux

Publications (2)

Publication Number Publication Date
EP0449896A1 EP0449896A1 (fr) 1991-10-09
EP0449896B1 true EP0449896B1 (fr) 1995-05-17

Family

ID=6369993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90900760A Expired - Lifetime EP0449896B1 (fr) 1988-12-23 1989-12-14 Machine d'enlevement de copeaux

Country Status (5)

Country Link
EP (1) EP0449896B1 (fr)
JP (1) JP2935560B2 (fr)
BR (1) BR8907849A (fr)
DE (2) DE3843466A1 (fr)
WO (1) WO1990007405A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT216U1 (de) * 1994-08-29 1995-05-26 Sperl Josef Sperl Josef Scheibe fuer die schlitz- und zapfenbearbeitung zur holz-fensterfertigung und messer fuer eine solche scheibe
FI96288C (fi) * 1995-04-20 1996-06-10 Kone Wood Oy Laite terän kiinnittämiseksi hakun pyöritettävään kiekkoon
JP3197476B2 (ja) * 1995-12-28 2001-08-13 兼房株式会社 植刃式フライス
AT2192U1 (de) * 1997-07-22 1998-06-25 Aigner Werkzeuge Ges M B H Messerkopf für eine fräsvorrichtung
CA2368297C (fr) * 2002-01-17 2011-04-12 Andritz Ab Couteau a travailler le bois polyvalent et dispositif de serrage
DE102006015692A1 (de) * 2006-03-29 2007-10-04 Michael Weinig Ag Maschine zum Bearbeiten von Werkstücken aus Holz, Kunststoff und dergleichen sowie Werkzeug zum Einsatz in einer solchen Maschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE318815C (de) * 1918-02-19 1920-02-12 Alexander Klehe Vorrichtung zum Nachstellen von Messern bei Messerkoepfen und aehnlichen Werkzeugen
US1490745A (en) * 1922-11-27 1924-04-15 Johnston Thomas Rotary planer head
DE1291887B (de) * 1963-08-03 1969-04-03 Lang Edmund Messerwelle oder Messerkopf fuer Holzbearbeitungsmaschinen
US3644050A (en) * 1970-04-02 1972-02-22 Waukesha Cutting Tools Inc Cartridge-type cutting tool with insert lock
DE2509304C2 (de) * 1975-03-04 1977-04-28 Karl Hertel Vorrichtung zum spannen eines schneidmessers, z.b. an messerkoepfen fuer die holzzerspanung
GB1500556A (en) * 1976-10-12 1978-02-08 Wickman Wimet Ltd Milling cutters
ATE5640T1 (de) * 1980-06-12 1984-01-15 Black & Decker Inc. Schneidmessermontage fuer eine kraftangetriebene hobelmaschine.
EP0048303B1 (fr) * 1980-10-07 1985-06-26 Black & Decker Inc. Porte-outil pour robot à main mû par un moteur

Also Published As

Publication number Publication date
EP0449896A1 (fr) 1991-10-09
WO1990007405A1 (fr) 1990-07-12
DE58909238D1 (de) 1995-06-22
JP2935560B2 (ja) 1999-08-16
BR8907849A (pt) 1991-10-01
JPH04502432A (ja) 1992-05-07
DE3843466A1 (de) 1990-06-28

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