EP0649366B1 - Outil de fraisage - Google Patents

Outil de fraisage Download PDF

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Publication number
EP0649366B1
EP0649366B1 EP93914564A EP93914564A EP0649366B1 EP 0649366 B1 EP0649366 B1 EP 0649366B1 EP 93914564 A EP93914564 A EP 93914564A EP 93914564 A EP93914564 A EP 93914564A EP 0649366 B1 EP0649366 B1 EP 0649366B1
Authority
EP
European Patent Office
Prior art keywords
tool
wall
pocket
milling
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.)
Expired - Lifetime
Application number
EP93914564A
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German (de)
English (en)
Other versions
EP0649366A1 (fr
Inventor
Josef Sperl
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 EP0649366A1 publication Critical patent/EP0649366A1/fr
Application granted granted Critical
Publication of EP0649366B1 publication Critical patent/EP0649366B1/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
    • B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting
    • B27G13/14—Cutter blocks; Other rotary cutting tools for profile cutting for cutting grooves or tenons
    • 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
    • B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/007—Combined with manufacturing a workpiece

Definitions

  • the invention relates to a milling tool for incorporating rebates in wood and rounding off the rebate edge, in particular in the case of doors or windows, with a milling head which has an essentially cylindrical peripheral surface and which, preferably on this peripheral surface, has at least one knife for producing the rebate.
  • an indexable insert knife and on its side surface normal to the axis of rotation carries at least one plate-shaped tool, preferably an indexable insert, which is separate from this knife and rounds off the edge of the fold produced by the knife, which is arranged in a pocket on the side surface and on a wall of the Bag lies flat and is clamped to this wall, this wall of the pocket extends to the circumferential surface of the milling head and is inclined to the axis of rotation of the milling tool and to the radial plane through the axis of rotation, and wherein a screw is used to clamp the tool, the screw Eye head is accessible from the side surface of the milling head which has the pocket.
  • Such a milling tool is known (AT-A 381.059) and has the advantage that inexpensive cutting inserts can be used while maintaining the essentially circular shape of the milling head and with a small footprint, the risk of accidents being reduced and the noise generated during the rotation of the milling tool being reduced becomes.
  • the object of the invention is to further improve such a milling tool with regard to the rounding of the folded edges cut by the knife and with regard to the fastening of the tool to the milling head, this fastening being intended to be easily accessible in order to be able to change the tool quickly if required, be it when the tool is worn or when changing to another rounding type.
  • the attachment should make it possible to compensate for the manufacturing tolerances of the tools.
  • the milling tool should be designed so that even large depths of fold can be machined.
  • the invention solves this problem in that provided on the fold corner and the fold edge, curved cutting edges provided tool with the cutting edge acting on the folding edge protrudes slightly beyond the circumferential surface of the milling head, and that the tool by one on another wall of the pocket by means of Screwed screwed, with its side edge against the tool clamping plate is clamped, the screw penetrating the clamping plate.
  • This not only rounds off the fold edge, as in the known one described at the beginning Device, but also a rounding of the fold corner, which is often desired for various reasons.
  • the clamping of the tool at the bottom of the pocket compared to the screwing used in the known construction results in an at least limited adjustment in the direction of the floor level, so that manufacturing tolerances of the tools can be compensated.
  • the latter advantage has an effect on indexable inserts, in which the conditions in the two possible use situations often differ from one another, sometimes even considerably.
  • the tool Due to the accessibility of the screw head of the screw used to fasten the tool from the side of the milling head, the tool can be easily assembled or disassembled, for example to replace the tool in the event of wear or when changing to a different depth of fold. It is advantageous that the arrangement of two separate tools, one of which cuts the fold and the other rounds the fold corner and fold edge, also enables the processing of very deep folds.
  • Another known wood milling tool (EP-A 205 884) is used for another purpose, namely for the production of decorative profiles.
  • a knife is inserted into a circumferential groove of the milling head, with which the desired profiling can be achieved, this knife being clampable in the groove by means of a wedge and a stud screw.
  • the stud has its axis approximately tangential to the circumference of the milling head and its head is accessible from a further circumferential groove offset in the circumferential direction relative to the groove receiving the knife.
  • This construction is not suitable for the incorporation and rounding of folds, in particular not for larger fold depths, and moreover has the disadvantage that the stud screw used for clamping the knife is difficult to access.
  • Another disadvantage is that two circumferential grooves are required in the milling head for clamping and inserting the knife, whereas the milling tool according to the invention for this purpose with a single pocket gets along.
  • the production of the milling head according to the invention is therefore considerably less complex than the known milling head.
  • the arrangement is such that the insert is secured with pins on the wall of the pocket against displacement in the direction of the plane of this wall, the pins sitting with play in the openings receiving them.
  • the pins preferably sit on the wall of the pocket and engage in openings in the indexable insert. This is cheaper than the reverse construction, in which the pins are attached to the indexable insert, since the indexable insert is thereby easy to manufacture and saves space.
  • FIG. 1 shows the milling head acting on the workpiece in the working position in the viewing direction normal to the axis of rotation of the milling head.
  • Fig. 2 shows the milling head in the direction of its axis of rotation.
  • Fig. 3 is a section along the line III - III of Fig.2. 4 shows an embodiment variant of FIG. 1.
  • a workpiece 1 made of wood e.g. to mill a window or a door, a fold 2, the fold edge 3 and the fold corner 3 'of which are to be rounded.
  • a milling tool 4 is used for this purpose, which is driven about an axis of rotation 5 for rotation in a known manner.
  • the milling tool 4 has a milling head 10 with an essentially cylindrical circumferential surface 6 (FIG. 2), on which an indexable knife 8 is clamped in a small recess 7 and is used to produce the fold 2.
  • Two or more such insert knives 8 are expediently arranged on the circumferential surface 6 at equal distances from one another.
  • a pocket 11 (FIG. 2, 3) is provided on the side surface 9 of the milling head 10 which is normal to the axis of rotation 5 and which forms a depression in the side surface 9.
  • the pocket 11 has the cross section shown in FIG. 3, seen in a radial plane with respect to the axis of rotation 5 of the milling head 10.
  • This cross section is delimited by a flat wall 12 on which the tool 13 acting on the folding edge 3 and the folding corner 3 'of the workpiece 1 is fastened.
  • This wall 12 is inclined to the direction of the axis of rotation 5 of the milling head 10 at an angle ⁇ (FIG. 3), this angle ⁇ preferably being 10 ° to 25 °.
  • this wall 12 is also inclined at an angle ⁇ to a radial plane 14 through the axis of rotation 5, which angle ⁇ is preferably between 10 ° and 30 °.
  • the radial plane 14 is expediently placed through that region of the wall 12 which is adjacent to the curved cutting edge 15 of the tool 13 and which cutting edge acts on the folded edge 3. This results in a suitable rake angle for the tool 13 in a simple manner with an appropriate design of the same.
  • This plate-shaped tool 13 lies flat against the flat wall 12 of the pocket 11 and extends with a rounded cutting edge 16 acting on the folding corner 3 'of the workpiece 1 beyond the cylindrical peripheral surface 6 of the milling head 10, but only slightly so that just the desired effect on the folding corner 3 'can be achieved.
  • the tool 13 of the wall 12 is fastened by clamping the tool 13 to this wall 12.
  • a clamping plate 17 is used, which rests on an adjacent wall 18 (FIG. 3) of the pocket 11 and is screwed onto this wall 18 by means of a screw 19 which passes through the clamping plate 17 and whose head 30 lies on the side surface 9 of the milling head 10 which has the pocket 11.
  • the clamping plate 17 has a bevelled side surface 20 (FIG. 3) which presses on the top surface of the tool 13.
  • the clamping plate 17 expediently has a recess 21 on its rear wall, which causes the side face 20 of the clamping plate 17 to be pressed securely against the tool 13 when the screw 19 is tightened.
  • the tool 13 is secured against displacement in the direction of the plane of the wall 12 on the one hand by the fact that its edge adjacent to the wall 18 bears against this wall 18 (FIG. 3).
  • the above-mentioned securing against displacement takes place by means of two pins 22 which are stuck in bores in the wall 12 and engage with their ends projecting over the wall 12 in openings 23 of the tool 13 with play.
  • This game serves to accommodate tolerances in the position and at a mutual spacing of the openings 23 in the tool 13, which tolerances are due to the production.
  • the tool 13 is designed as an indexable insert which has two pairs of cutting edges 15, 16, so that the indexable insert is in two positions on the in a manner known per se Milling head 10 is mountable.
  • the axis of the screw 19 expediently runs parallel to the axis of rotation 5, which on the one hand facilitates the production of the threaded bore 24 receiving the screw 19, on the other hand the assembly or disassembly of this screw 19.
  • the tool 13 is problem-free detachable from the wall 12 or the heads of the pins 22 and exchangeable for another tool 13 or - if the tool 13 is an indexable insert - can be used again in a position offset by 180 °.
  • the pocket 11 expediently has a third wall 25 (FIG. 3) which runs parallel to the axis of rotation 5 and thus parallel to the axis of the screw 19.
  • This wall 25 supports the clamping plate 17 in the radial direction with respect to the axis of rotation 5, so that the clamping plate 17 cannot deflect outwards when the screw 19 is tightened and the screw 19 is thus free of shear forces.
  • the tool 13 need not necessarily be an indexable insert, although this embodiment is particularly advantageous.
  • the free ends of the pins 22 are set back slightly with respect to the top surface of the plate of the tool 13 in order to enable the clamping plate 17 to lie snugly against the top surface of the tool 13 in the region of the openings 23 .
  • the wall 18 in the area which is adjacent to the tool 13 has an angle 27 which widens the recess 21 in the area of the tool 13. If the tool 13 is not an indexable insert, it can have on its side 26 (FIG. 1) facing away from the cutting edges 15, 16 a side surface which is normal to the plane of the insert which forms the tool 13. This side surface then lies flat against the bend 27 of the wall 18.
  • the aforementioned bend 27 can have a further recess which receives the tooth-like projection 28 (FIG. 3) of the indexable insert, which forms the cutting edge 15.
  • two or more screws 19 can also be used.
  • the axes of the screws are expediently parallel to one another.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Milling Processes (AREA)

Abstract

Outil de fraisage pour réaliser des rainures dans le bois, en particulier pour des portes ou des fenêtres, comportant une tête de fraisage (10) sur la surface périphérique de laquelle est fixé au moins un couteau (29) pour la réalisation de la rainure. Sur sa surface latérale (9) normale à l'axe de rotation (5), la tête de fraisage (10) comporte au moins un outil (13) qui est pourvu d'arêtes coupantes recourbées (15, 16) servant à arrondir l'arête (3) et l'angle (3') de la rainure. Cet outil (13) est logé dans une poche (11) de la surface latérale (9) et s'étend sur une faible longueur au-delà de la surface périphérique (6) de la tête de fraisage (10). Il est disposé contre une paroi (12) de la poche (11) et il est fixé à cette paroi par une plaque de fixation (17) qui est vissée sur une autre paroi (18) de la poche (11). La vis (19) utilisée à cet effet traverse la plaque de fixation (17) et sa tête (30) est accessible depuis la surface latérale (9), comportant la poche (11), de la tête de fraisage (10).

Claims (4)

  1. Outil de fraisage pour façonner des rainures en bois et pour arrondir l'arête (3) de la rainure, particulièrement aux portes ou fenêtres, qui comprend une tête de fraisage (10) ayant une surface périphérique essentiellement cylindrique, quelle tête porte, de préférence à cette surface périphérique, au moins une lame (8) pour produire la rainure, en particulier une lame à plaquette réversible, et qui porte à sa face latérale (9) perpendiculaire à son axe de rotation (5) au moins un outil (13) en forme de plaque, séparée de cette lame (8) et arrondissant l'arête (3) de la rainure (2) produite par la lame (8), de préférence une plaquette amovible, qui est logé dans une poche (11) de la face latérale (9) et s'applique de manière plane à une paroi (12) plaine de la poche (11) étant serrée contre cette paroi (12), ladite paroi (12) de la poche (11) s'étendant jusqu'à la surface périphérique (6) de la tête de fraisage (10) et étant inclinée par rapport à l'axe de rotation (5) de l'outil de fraisage ainsi qu'à la plaine radiale à travers l'axe de rotation (5), une vis (19) servant pour la serrage de l'outil, le tête de vis (30) de laquelle étant accessible de la face latérale (9) du tête de fraisage (10), qui comprend la poche (11), caractérisé en ce que l'outil (13) prévu d'arêtes coupants (16 et 15) curvilignes, qui agissent au coin (3') de la rainure et à l'arête de la rainure, saillit légèrement avec son arête coupant agissant au coin (3') de la rainure au delà de la surface périphérique (6) de la tête de fraisage (10), et en ce que l'outil (13) est serré par une plaque de serrage (17) vissée par la vis (19) à une autre paroi (18) de la poche (11), dont l'arête latéral (20) est appliqué à l'outil (13), la vis (19) pénétrant la plaque de serrage (17) .
  2. Outil de fraisage selon la revendication 1, caractérisé en ce que l'outil (13) est bloqué par des chevilles (22) à la paroi (12) de la poche (11) contre un déplacement en direction de la plaine de cette paroi (12), les chevilles (22) étant logées avec une marge dans les ouvertures (23), qui les reçoivent.
  3. Outil de fraisage selon la revendication 2, caractérisé en ce que les chevilles (22) sont fixées à la paroi (12) de la poche (11).
  4. Outil de fraisage selon une quelconque des revendications 1 à 3, caractérisé en ce que l'axe de la vis (19) servant à la fixation par vis de la plaque de serrage (17) s'étend parallèlement à l'axe de rotation (5) de la tête de fraisage (10).
EP93914564A 1992-07-06 1993-07-05 Outil de fraisage Expired - Lifetime EP0649366B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0138192A AT397367B (de) 1992-07-06 1992-07-06 Fräswerkzeug
AT1381/92 1992-07-06
PCT/AT1993/000112 WO1994001258A1 (fr) 1992-07-06 1993-07-05 Outil de fraisage

Publications (2)

Publication Number Publication Date
EP0649366A1 EP0649366A1 (fr) 1995-04-26
EP0649366B1 true EP0649366B1 (fr) 1996-10-16

Family

ID=3512656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93914564A Expired - Lifetime EP0649366B1 (fr) 1992-07-06 1993-07-05 Outil de fraisage

Country Status (4)

Country Link
EP (1) EP0649366B1 (fr)
AT (1) AT397367B (fr)
DE (1) DE59304210D1 (fr)
WO (1) WO1994001258A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE539961C2 (sv) 2016-06-15 2018-02-13 Kvarnstrands Verktyg Ab Wood cutting tool and an arrangement for using said tool

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504012A1 (de) * 1964-10-30 1975-10-16 Oertli Werkzeuge Ag Fraeser, insbesondere falz- oder nutenfraeser mit wendeschneidmesser
EP0157157B1 (fr) * 1984-04-06 1988-05-18 Oertli Werkzeuge Ag Fraise à rainure pour le façonnage du bois ou du plastique
AT381059B (de) * 1984-04-11 1986-08-25 Sperl Josef Fraeswerkzeug zur einarbeitung von faelzen in holz
DE8514057U1 (de) * 1985-05-13 1985-06-20 Pela AG Werkzeugfabrik, Galgenen Holzfräswerkzeug
GB8910077D0 (en) * 1989-05-03 1989-06-21 Wadkin Public Ltd Co Joint shaping machine

Also Published As

Publication number Publication date
WO1994001258A1 (fr) 1994-01-20
DE59304210D1 (de) 1996-11-21
AT397367B (de) 1994-03-25
ATA138192A (de) 1993-08-15
EP0649366A1 (fr) 1995-04-26

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