EP1152875A1 - Outil de fraisage destine a l'usinage par enlevement de matiere de bois, de materiaux a base de bois, de plastique ou equivalent - Google Patents

Outil de fraisage destine a l'usinage par enlevement de matiere de bois, de materiaux a base de bois, de plastique ou equivalent

Info

Publication number
EP1152875A1
EP1152875A1 EP00912380A EP00912380A EP1152875A1 EP 1152875 A1 EP1152875 A1 EP 1152875A1 EP 00912380 A EP00912380 A EP 00912380A EP 00912380 A EP00912380 A EP 00912380A EP 1152875 A1 EP1152875 A1 EP 1152875A1
Authority
EP
European Patent Office
Prior art keywords
opening
milling tool
chip
cutting edge
tool according
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.)
Ceased
Application number
EP00912380A
Other languages
German (de)
English (en)
Inventor
Roland Fischer
Michael Oertel
Klaus Rehm
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.)
Technische Universitaet Dresden
Original Assignee
Technische Universitaet Dresden
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
Priority claimed from DE19925478A external-priority patent/DE19925478C1/de
Priority claimed from DE19950722A external-priority patent/DE19950722B4/de
Application filed by Technische Universitaet Dresden filed Critical Technische Universitaet Dresden
Publication of EP1152875A1 publication Critical patent/EP1152875A1/fr
Ceased legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/006—Details of the milling cutter body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B23Q11/0046—Devices for removing chips by sucking
    • 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
    • B27G13/08—Cutter blocks; Other rotary cutting tools in the shape of disc-like members; Wood-milling cutters
    • 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
    • Y10T407/1934—Rotary cutting tool including holder [i.e., head] having seat for inserted tool with separate means to fasten tool to holder
    • Y10T407/1936—Apertured tool

Definitions

  • Milling tool for machining wood, wood-based material, plastic or the like.
  • the invention relates to a milling tool for machining wood, wood-based material, plastic or the like, according to the preamble of claim 1
  • a disadvantage of this milling tool is that the chips that are flung away have high kinetic energy and must be collected and transported away in a costly manner by complicated chip hoods with large amounts of suction air. As the cutting speed / speed increases, the suction speed and air volume required to collect the chips, derive them and existing guidelines with regard to the residual dust content of the air
  • a circular saw device in which the inside of the saw blade is open towards the circumference of the saw blade, approximately radial to the central area Suction channels running towards it are provided, which open into a collecting space provided on a frame, which is connected to a suction device
  • the object of the invention is to provide a device for removing the chips for milling tools with chip space or gap, which works with low energy and technical effort, with an impairment of the generated workpiece surface is prevented and the cutting edge wear is to be reduced
  • the object is achieved in connection with the features mentioned in the preamble of claim 1 in that the chip space or the gap is formed as an opening for chip removal, the opening is approximately perpendicular to the cutting plane formed by the cutting edge and cutting direction, the opening being one Cross-section that is larger than the projected area of a chip that is cut with the cutting edge during the cutting process >
  • the opening in the present invention is significantly larger than the corresponding gap there, where it is considered technically necessary to improve the surface quality (mimicking the pre-splitting), a very narrow gap (planer jaw principle ) to be provided in connection with a pressure element
  • the chips which are axially accelerated during the cutting process move independently along the cutting edge and the knife flap over the opening for chip discharge in the direction of the discharge opening or the end face without the aid of external energies due to their high kinetic energy.
  • the cutting takes place geometrically certain straight or profiled cutting edges
  • the cutting edge is advantageously arranged at an angle of inclination K between 60 ° and 20 °.
  • the front ejection opening can also be designed conically
  • the opening for chip removal can be designed as an opening with a constant cross-section or widening to the end wall.
  • the cross-sections are designed as slots or bores with little manufacturing effort
  • the ejection opening and the tool circumference are advantageously applied according to the setting angle.
  • the wall of the hollow tool body should be made as thin as possible. This minimizes the path of the chips in or through the tool
  • the end face of the milling tool is advantageously designed (as a pipe connection) for adapting a chip disposal device.
  • the chip disposal device can be provided with low power, which only serves to transport the milled wood chips from the tool to the chip bunker
  • the cutting attachment is loosened in such a way that an unimpeded chip flow into the tool or into the gap is made possible.
  • the cutting edge is firmly connected to the basic tool body by soldering, gluing or the like or is exchangeably fastened with a knife flap
  • a thin-walled, cylindrical to conical installation which is adapted to the inner shape of the tool and whose outer diameter is slightly smaller is provided is than the diameter of the tool cavity, the installation having at least one chip window in the area of the opening for chip removal (effective point area), the so is dimensioned so that unhindered access to the chips can take place in the remaining tool cavity
  • the milling tool consists of a rotating, thin-walled basic tool body, with at least two cutters staggered on the circumference and a gap in front of the cutters.
  • the cutting takes place by means of geometrically determined straight or profiled cutters through the chip receiving opening in the direction of the tool cavity
  • air flows against the chip movement from the gap similar to the principle of the radial centrifugal pump
  • the centrifugal force presses it outwards or against the inner wall of the tool
  • the fixed cylindrical to conical installation with a chip window prevents entrainment of the air mass in the mold cavity, so that it no longer escapes from the chip receiving openings as a result of the centrifugal force and thereby hinders the chips in their movement into the tool or even pushes them out fly unchecked through the chip window and meet an advantageously inclined guide element that guides them axially out of the tool
  • the chips can get out of the tool in several ways. On the one hand, through a gap between the tool and the motor / bearing plate.
  • the cylindrical to conical installation is on feet or it has an outlet opening in the direction of flight of the chips in the lower area of the installation.
  • the tool can be designed to be open on the side facing away from the motor.
  • the installation must be fixed to the frame or the frame by struts.
  • An axially acting suction can be attached to the tool, directly supporting the ejection opening of the pipe. It is an advantage that this suction can be operated with low power, which is just sufficient to transport the wood chips from the tool to the chip bunker
  • clamping rings can be attached to the open side of the tool.
  • FIG. 3 shows a perspective illustration of the basic tool body according to FIG. 2
  • FIG. 5 shows a perspective illustration of the basic tool body according to FIG. 4
  • Fig. 6 is a perspective view of the variant with the chip ejection between
  • FIG. 7 shows a perspective illustration of the variant with the chip ejection to the open side of the tool facing away from the motor with a section of the basic tool body
  • FIG. 8 shows a cross section through the milling cutter according to FIG. 7
  • the chip is separated from the workpiece by means of the cutting edge 1. It moves over the cutting edge 1 and the cutting attachment 5 through the opening 2 for chip removal into the tool cavity 11. The chip becomes compressed on the cutting edge 1 and consequently curls up a little so that the chip can enter the tool cavity 11 unhindered, the cross section (W x H) of the chip receiving opening 2 is made larger than the projected area (b s xh s ) of the cutting edge 1 Cut chips During the cutting process, the chip receives an acceleration / impulse through the cutting edge 1 and moves on a chip trajectory 15 through the tool cavity 11
  • FIG. 2 shows a milling tool with a conical ejection opening 3 (conical tool cavity 11).
  • Two cutting edges 1 are arranged opposite one another on the milling tool at a setting angle K of 45 °.
  • an opening 2 for chip removal In front of each cutting edge 1 there is an opening 2 for chip removal, which leads to the ejection opening 3
  • the opening 2 is tapered towards the ejection opening 3 and is designed as a slot on the front side 4
  • Opening 2 is a profiled cutting edge 1 by means of a cutting attachment 5 (knife flap) so that the selected free cross-section of the opening 2 is not restricted.
  • a clamping ring 6 comprising the end face 4 is also provided, which overlaps the slotted opening 2, and so for Increasing the rigidity of such a thin-walled milling tool contributes
  • the clamping ring 6 is dimensioned so that it can be shrunk onto the milling tool
  • the chips separated and accelerated with the cutting edge 1 are passed through the opening 2 in front of the cutting edge 1 to the ejection opening 3.
  • the opposite end of the tool is closed and serves to receive the drive shaft.
  • the chips come out of the tool independently with low power can be attached to the discharge opening 3 in order to transport the chips over a greater distance to a chip bunker
  • FIG. 3 shows in perspective a milling tool corresponding to the representation in FIG. 2
  • FIG. 3 only the rotationally symmetrical basic body without the attached cutting edge 1 with cutting edge attachment 5 and clamping ring 6 is shown.
  • the design of the opening 2 and the ejection opening 3 can be clearly seen.
  • the opening 2 here extends to the end face 4 of the tool.
  • the opening 2 has a constant round cross section over its length, whose axis is perpendicular to a cutting plane formed by the cutting edge and the cutting direction
  • FIG. 5 shows the milling tool according to FIG. 4 in a perspective view. The position of the openings 2 on the end face 4 of the milling tool is shown. At the center of the end face 4 is a bore for a drive shaft
  • the cutting edge 1 lies obliquely in front of the circular opening 2.
  • the cutting edge 1 is fastened here by soldering or gluing
  • FIG. 6 is a perspective view of the variant with chip ejection between the tool and the motor / bearing plate with a section of the basic tool body 10 6 pushes the chips separated with the cutting edge 1 through an opening 2 lying in front of the cutting edge 1 and the chip window 8 of the stationary cylindrical to conical installation 7 located behind it in the effective point area (in relation to the chip trajectory 15) into the tool cavity 11
  • the installation 7 is cylindrical or tubular, in order to obtain a good adaptation to the inner shape of the tool and the largest possible remaining tool cavity 11.
  • the chips are flung onto a guide element 9 on the inner wall of the tubular installation 7 , the chips almost axially from the tool cavity 11, through the gap between the tubular installation 7 and the motor / bearing plate 14, formed by placing the tubular installation 7 on several feet 13, and through the gap between the basic tool body 10 / clamping ring 6 and Motor / bearing plate 14 leads to the ejection opening 3
  • Fig. 7 shows a perspective view of the milling tool with the ejection opening 3 facing away from the motor, which is located above the basic tool body 10 and the clamping ring 6.
  • a suction hose can be connected directly to this to remove the chips.
  • the tubular installation 7 is via a lever mechanism 17 or Feet 13 (not shown here) attached to the frame
  • Fig. 8 the cross section through the milling cutter according to Fig. 7 is shown.
  • the chip window 8 is aligned so that it covers the effective point area. With large changes in the cutting engagement depth, an adjustment of the position of the chip window 8 is necessary.
  • the positioning of the chip window 8 to the effective point area takes place via a Lever mechanism 17, which is connected to an adjustable stop / table 16.
  • the edge of the chip window 8, which lies in the direction of flight of the chips, is applied in order to hinder the chip movement as little as possible Reference list

Landscapes

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

Abstract

L'invention concerne un outil de fraisage destiné à l'usinage par enlèvement de matière de bois, de plastique ou équivalent. Cet outil de fraisage est doté d'au moins une lame (1), d'un espace à copeaux placé dans le sens de rotation juste en amont de la lame (1) et destiné à recevoir les copeaux ou d'une fente qui est reliée à une cavité (11) pratiquée dans l'outil et qui présente, à son tour, une ouverture d'éjection (3) axiale destinée à l'évacuation des copeaux. L'outil de fraisage est caractérisé en ce que l'espace à copeaux ou la fente aboutissent dans un orifice (2) destiné à la dérivation des copeaux, l'orifice (2) étant approximativement perpendiculaire au plan de coupe formé par le tranchant et le sens de coupe. L'orifice (2) a une section (B x H) supérieure à la surface projetée (b x h) d'un copeau enlevé par la lame (1) lors de l'opération de coupe.
EP00912380A 1999-02-19 2000-02-18 Outil de fraisage destine a l'usinage par enlevement de matiere de bois, de materiaux a base de bois, de plastique ou equivalent Ceased EP1152875A1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19907230 1999-02-19
DE19907230 1999-02-19
DE19925478A DE19925478C1 (de) 1999-06-03 1999-06-03 Fräswerkzeug zur spanenden Bearbeitung von Holz, Holzwerkstoff, Kunststoff o. dgl.
DE19925478 1999-06-03
DE19950722A DE19950722B4 (de) 1999-02-19 1999-10-19 Fräswerkzeug zur spanenden Bearbeitung von Holz, Holzwerkstoff, Kunststoff o. dgl.
DE19950722 1999-10-19
PCT/DE2000/000453 WO2000048802A1 (fr) 1999-02-19 2000-02-18 Outil de fraisage destine a l'usinage par enlevement de matiere de bois, de materiaux a base de bois, de plastique ou equivalent

Publications (1)

Publication Number Publication Date
EP1152875A1 true EP1152875A1 (fr) 2001-11-14

Family

ID=27218987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00912380A Ceased EP1152875A1 (fr) 1999-02-19 2000-02-18 Outil de fraisage destine a l'usinage par enlevement de matiere de bois, de materiaux a base de bois, de plastique ou equivalent

Country Status (3)

Country Link
US (1) US6752184B1 (fr)
EP (1) EP1152875A1 (fr)
WO (1) WO2000048802A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1190812B1 (fr) * 2000-09-25 2004-02-25 Ledermann GmbH Procédé et dispositif pour l'usinage de pièces par enlèvement de copeaux
DK200201996A (da) * 2002-04-25 2003-10-26 Herramientas Preziss S L Anordning til forbedret skæring
FR2892650A1 (fr) * 2005-10-28 2007-05-04 A O B Soc Par Actions Simplifi Perfectionnement aux outils d'usinage rotatifs en forme generale de disque
DE102013100420A1 (de) * 2013-01-16 2014-07-17 Rehau Ag + Co Verfahren zur Herstellung eines polymeren Kfz-Bauteils
CN110744346B (zh) * 2019-11-07 2020-09-25 合肥学院 一种数控铣床工作台
CN110842632B (zh) * 2019-11-07 2020-10-16 合肥学院 数控车床在线检测装置及检测方法

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE301957C (fr)
SE333856B (fr) * 1968-07-12 1971-03-29 Sandvikens Jernverks Ab
US3732907A (en) * 1970-06-12 1973-05-15 Pitea Maskin Industri Device for separating small pieces from a work piece of material
DE3043146A1 (de) 1980-11-15 1982-07-08 Thomas-Werkzeuge, 5600 Wuppertal Messerkopf
DE3120343C2 (de) 1981-05-22 1984-10-18 Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen "Kreissägenvorrichtung"
US4645383A (en) * 1985-05-22 1987-02-24 Lindsay Harold W End milling cutter and method of making same
DE3602419A1 (de) * 1986-01-28 1987-07-30 Joerg Flemming Walzfraeser fuer verbundwerkstoffe
SE460346B (sv) * 1988-06-16 1989-10-02 Sandvik Ab Fraesverktyg och kassett daerfoer
DE3837200C1 (fr) 1988-11-02 1990-04-19 Inter-Wood-Maschinen Gmbh & Co Kg, 8923 Lechbruck, De
DE19509933C1 (de) * 1995-03-18 1996-05-23 Univ Dresden Tech Fräswerkzeug zur spanenden Bearbeitung von Holz, Kunststoff o. dgl.
DE19711938C2 (de) * 1997-03-21 2001-02-22 Fette Wilhelm Gmbh Fräser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0048802A1 *

Also Published As

Publication number Publication date
WO2000048802A1 (fr) 2000-08-24
US6752184B1 (en) 2004-06-22

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