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WO1993018880A1 - Douille hydraulique ou porte-outils avec manchons interne et externe expansibles - Google Patents

Douille hydraulique ou porte-outils avec manchons interne et externe expansibles Download PDF

Info

Publication number
WO1993018880A1
WO1993018880A1 PCT/SE1992/000194 SE9200194W WO9318880A1 WO 1993018880 A1 WO1993018880 A1 WO 1993018880A1 SE 9200194 W SE9200194 W SE 9200194W WO 9318880 A1 WO9318880 A1 WO 9318880A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
bushing
tool holder
holder
aperture
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
PCT/SE1992/000194
Other languages
English (en)
Inventor
Jan Danielsen
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.)
Spirex Tools AB
Original Assignee
Spirex Tools AB
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 Spirex Tools AB filed Critical Spirex Tools AB
Priority to AU16885/92A priority Critical patent/AU1688592A/en
Priority to PCT/SE1992/000194 priority patent/WO1993018880A1/fr
Publication of WO1993018880A1 publication Critical patent/WO1993018880A1/fr
Anticipated expiration legal-status Critical
Priority to SE9403508A priority patent/SE9403508L/xx
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
    • B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
    • B23B31/305—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck the gripping means is a deformable sleeve

Definitions

  • Hydraulic bushing or tool holder with expandable inner and outer sleeves The present invention relates to the actual tool holders in a turret to be used with a processing machine.
  • the known holder is intended to form part of a processing machine and constitute the holder for a machining tool such as a lathe shaft.
  • the holder is secured in the machine by a tool attachment which may either be permanent or be located on a unit containing several tool holders in order to enable several machining operations to be carried out one after the other.
  • the machining tool must be rather long so that machining can be performed in the hollow interior of a work piece.
  • the tool shaft has, for instance, been arranged in a cradle with several screw joints pressing the shaft against the cradle.
  • One method of reducing the undesired vibrations in the case of long machining tools is to replace mechanical attachment means by a hydraulic retention arrangement. This is achieved by providing a tool holder with an aperture to receive the shaft of the machining tool. Inside the wall of the aperture is a tubular space which can be filled with a medium such as oil or fat. If this medium is subject to pressure, the walls of the aperture will be forced inwards, thereby clamping the shaft of the machining tool extremely firmly. The force achieved in this wav exceeds anv force which can be achieved bv mechanical
  • SUBSTITUTE SHEET means. Inner sleeves or bushings having the same outer diameter as the inner diameter of the aperture, but with different inner diameters can be inserted into the aperture, thereby enabling the tool holder to be used for machine tools of different thicknesses.
  • a suitable embodiment is a bushing provided with a through-hole and a tubular part.
  • An annular space of the type described above is arranged in the bushing and inside the wall of the aperture. The sleeve is inserted into the holder aperture and medium in the annular space is thus subjected to pressure so that the tool inserted is firmly clamped, as well as the outer wall of the sleeve being firmly clamped against the wall of the aperture.
  • the bushing described is usually provided with a peripheral ring or flange which is located at the outer end of the bushing and designed to be located outside the holder aperture.
  • the flange includes means to influence the medium.
  • Figure 1 shows the end view of a bushing intended for insertion into the aperture of a tool holder
  • Figure 2 shows the bushing seen from the side
  • Figure 3 shows the bushing during insertion into a tool holder
  • Figure 4 shows a tool holder together with a machining tool in operation
  • Figure 5 shows the bushing according to the invention
  • Figure 6 shows the latter bushing together with a tool holder.
  • Figures 1 and. 2 show a sleeve or bushing 1 with tubular part 2 and an annular end portion 3. Inside the sleeve is a space 4 which communicates with a conduit 5 for the supply of medium. The conduit communicates with a means 6 for regulating the pressure of the medium inside the space 4. The pressure is regulated by a screw which can be tightened or loosened.
  • the inner sleeve or bushing shown in Figures 1 and 2 is intended to be inserted in a tool holder 7 by way of the through-hole 8 in the holder 7.
  • the tool holder is secured to a tool attachment 9 which may either be permanently secured and immovable or may be mounted on a movable member provided with several machining tools.
  • each machining tool is for each machining tool to be provided with a sleeve 2 having a peripheral space 4.
  • Each tool may be provided with such a sleeve which is permanently built in. After insertion into the aperture 8 the medium in the space 4 of the built-in sleeve in the tool is subjected to pressure and the tool is thus firmly clamped in the tool holder 7.
  • Figures 5 and 6 show a bushing 2 and 12 having a flange 12 in sector form.
  • the nozzles communicate with a pressure medium source and can be directed towards the tip of the lather shaft 10.
  • the nozzles mentioned above may also be placed on the front side of the flange 3 or 12. Sealing O-rings are arranged at the inner and outer edges on the rear of the flange, to form a peripheral channel for coolant The nozzles at the front of the flange are connected to this peripheral channel.
  • the arrangement 6 may be directed either radially or tangentially in Figure 1 and also in the other figures.
  • the first page of this prospectus shows a turret with a number of tool attachments.
  • the idea is that before tools are inserted into the tool attachments, the hollow in each tool holder shall be provided with a bushing of the type shown in Figures 1 and 2 or in Figures 5 and 6. These bushings may also cooperate with insert sleeves or various inner diameters.
  • the advantage of using the described bushing in the tool holders for a turret is that the vibration of the tool inserted will be greatly reduced and a considerable projection can be tolerated without vibrations occurring.
  • the use of the bushing described also means that the number of tool holders can be greatly reduced.
  • the use of a bushing of the type described above facilitates the adjustment of a tool and also enables first-class tool centering. Tools can also be exchanged considerably more quickly when a hydraulic bushing is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

Une tourelle pour machine-outil est fournie d'une quantité de porte-outil (7) pour outils (11). Avec les porte-outils connus (7), il est difficile de parvenir à maintenir l'outil (11) fixement.On parvient à éliminer cette difficulté, selon la présente invention, en insérant une douille hydraulique dans l'ouverture recevant l'outil (8) de chaque porte-outil (7), la surface du manchon externe de la douille (1) étant ainsi pressée contre la paroi interne de l'ouverture (8) dans le porte-outil (7), et la surface du manchon externe de la douille (1) étant pressée contre la surface du manchon externe de l'outil (11).
PCT/SE1992/000194 1992-03-26 1992-03-26 Douille hydraulique ou porte-outils avec manchons interne et externe expansibles Ceased WO1993018880A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU16885/92A AU1688592A (en) 1992-03-26 1992-03-26 Hydraulic bushing or tool holder with expandable inner and outer sleeves
PCT/SE1992/000194 WO1993018880A1 (fr) 1992-03-26 1992-03-26 Douille hydraulique ou porte-outils avec manchons interne et externe expansibles
SE9403508A SE9403508L (sv) 1992-03-26 1994-10-14 Anordning till verktygsmallar till ett revolverhuvud ingående i en berbetningsmaskin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1992/000194 WO1993018880A1 (fr) 1992-03-26 1992-03-26 Douille hydraulique ou porte-outils avec manchons interne et externe expansibles

Publications (1)

Publication Number Publication Date
WO1993018880A1 true WO1993018880A1 (fr) 1993-09-30

Family

ID=20385103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1992/000194 Ceased WO1993018880A1 (fr) 1992-03-26 1992-03-26 Douille hydraulique ou porte-outils avec manchons interne et externe expansibles

Country Status (2)

Country Link
AU (1) AU1688592A (fr)
WO (1) WO1993018880A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026247A1 (fr) * 1994-03-25 1995-10-05 Spirex Tools Ab Dispositif de refroidissement d'une machine outil retenue dans une plaque revolver
DE29614727U1 (de) * 1996-08-23 1996-10-02 Fritz Schunk GmbH Fabrik für Spann- und Greifwerkzeuge, 74348 Lauffen Dehnspannfutter
US8992139B2 (en) 2009-05-26 2015-03-31 Gkn Aerospace Sweden Ab Holder for a cutting tool, a cutting tool and a cutting insert
JP2020183031A (ja) * 2019-05-02 2020-11-12 ハイマー・ゲーエムベーハー 液圧でクランプ可能なツールホルダ／工作物ホルダ
DE102019123665A1 (de) * 2019-09-04 2021-03-04 Johannes Wissing Pendelhalter-Spannhülse
JP2021065976A (ja) * 2019-10-24 2021-04-30 アイシン機工株式会社 工具ホルダ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743530C (de) * 1941-02-16 1943-12-28 Hans Hofer Vorrichtung zum loesbaren Verbinden zweier Teile, insbesondere Spanndorn oder Spannfutter fuer Werkzeugmaschinen
DE2719655A1 (de) * 1977-05-03 1978-11-09 Howema Werkzeuge Wittenborn & Arbeitswelle mit werkzeugspannvorrichtung
DE3046094A1 (de) * 1980-12-06 1982-06-09 Präzisions-Werkzeug- und Spanntechnik GmbH, 7300 Esslingen "spannelement"
DE3148677A1 (de) * 1981-12-09 1983-07-21 Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München Vorrichtung zum loesbaren radialen und axialen spannen eines mit einer mittigen bohrung versehenen werkzeugs oder werkstuecks auf einem dorn od. dgl.
SE467299B (sv) * 1990-10-17 1992-06-29 Spirex Tools Ab Verktygshaallare foer laangstraeckta bearbetningsverktyg foersedd med medel foer kylmedietillfoersel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743530C (de) * 1941-02-16 1943-12-28 Hans Hofer Vorrichtung zum loesbaren Verbinden zweier Teile, insbesondere Spanndorn oder Spannfutter fuer Werkzeugmaschinen
DE2719655A1 (de) * 1977-05-03 1978-11-09 Howema Werkzeuge Wittenborn & Arbeitswelle mit werkzeugspannvorrichtung
DE3046094A1 (de) * 1980-12-06 1982-06-09 Präzisions-Werkzeug- und Spanntechnik GmbH, 7300 Esslingen "spannelement"
DE3148677A1 (de) * 1981-12-09 1983-07-21 Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München Vorrichtung zum loesbaren radialen und axialen spannen eines mit einer mittigen bohrung versehenen werkzeugs oder werkstuecks auf einem dorn od. dgl.
SE467299B (sv) * 1990-10-17 1992-06-29 Spirex Tools Ab Verktygshaallare foer laangstraeckta bearbetningsverktyg foersedd med medel foer kylmedietillfoersel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995026247A1 (fr) * 1994-03-25 1995-10-05 Spirex Tools Ab Dispositif de refroidissement d'une machine outil retenue dans une plaque revolver
DE29614727U1 (de) * 1996-08-23 1996-10-02 Fritz Schunk GmbH Fabrik für Spann- und Greifwerkzeuge, 74348 Lauffen Dehnspannfutter
US6179530B1 (en) 1996-08-23 2001-01-30 Schunk GmbH & Co. KG Fabrik f{umlaut over (u)}r Spann - und Greifwerkzeuge Expansion clamping chuck
US8992139B2 (en) 2009-05-26 2015-03-31 Gkn Aerospace Sweden Ab Holder for a cutting tool, a cutting tool and a cutting insert
JP2020183031A (ja) * 2019-05-02 2020-11-12 ハイマー・ゲーエムベーハー 液圧でクランプ可能なツールホルダ／工作物ホルダ
DE102019123665A1 (de) * 2019-09-04 2021-03-04 Johannes Wissing Pendelhalter-Spannhülse
JP2021065976A (ja) * 2019-10-24 2021-04-30 アイシン機工株式会社 工具ホルダ

Also Published As

Publication number Publication date
AU1688592A (en) 1993-10-21

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