WO2017046385A1 - Tête de broche et machine-outil - Google Patents

Tête de broche et machine-outil Download PDF

Info

Publication number
WO2017046385A1
WO2017046385A1 PCT/EP2016/072060 EP2016072060W WO2017046385A1 WO 2017046385 A1 WO2017046385 A1 WO 2017046385A1 EP 2016072060 W EP2016072060 W EP 2016072060W WO 2017046385 A1 WO2017046385 A1 WO 2017046385A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
drive shaft
machine tool
spindle head
drive
Prior art date
Application number
PCT/EP2016/072060
Other languages
German (de)
English (en)
Inventor
Heinz Stenzel
Thorsten Rettich
Original Assignee
J.G. Weisser Soehne Gmbh & Co. Kg
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 J.G. Weisser Soehne Gmbh & Co. Kg filed Critical J.G. Weisser Soehne Gmbh & Co. Kg
Publication of WO2017046385A1 publication Critical patent/WO2017046385A1/fr

Links

Classifications

    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general

Definitions

  • the present invention relates to a spindle head for a machine tool with a drivable via a first drive shaft tool holder and a machine tool for replaceable spindle heads.
  • a machine tool is known in ⁇ example from DE 41 08 038 AI.
  • spindle heads each have a tool spindle, in which a tool holder is rotatably mounted about an axis.
  • the spindle head is connected to a drive by means of a coupling.
  • such spindle heads are used to carry out drilling or milling.
  • the advantage here is that a nearly or even completely play-free coupling can be achieved.
  • At least two circumferentially spaced apart projections and / or at least two circumferentially spaced apart from each other recesses are formed at the drive end of the first drive shaft.
  • a machine tool is provided with a clutch which is arranged between a first drive shaft of a spindle head and a second drive shaft of a drive, wherein the clutch comprises a coupling part with an end face coupling surface and a counter coupling part with a front side counter coupling surface, wherein the coupling surface at least has a projection extending in the axial direction and tapering away from the coupling part, and the counter-coupling surface has at least one recess extending in the axial direction and narrowing towards the counter-coupling part, wherein the projection can be brought into engagement with the recess.
  • the configuration is such that the projections are engageable with the recesses without play.
  • the spindle head is preferably designed in this case, in particular as described above and / or according to one of the claims directed to a spindle head.
  • the at least one projection and the at least one recess are shaped complementarily to one another and can be brought into engagement with one another in a form-fitting manner.
  • the invention accordingly provides for the use of a coupling in which a coupling part has at least one projection tapering towards a free end and a counter coupling part having at least one complementarily configured receptacle.
  • the coupling is aligned on the end side or axially instead of radially. As a result, an approximately play-free positive connection can be produced.
  • the taper of the projection cooperates with the complementary shaped constriction of the recess.
  • the advantage here is that can be achieved by the taper regardless of manufacturing tolerances, that with sufficient axial adjustment a backlash-free positive connection is made.
  • the at least one projection on an end face of the drive shaft and the at least one recess are arranged on an opposite end face of a coupling element.
  • the coupling part is arranged on the tool side on the coupling and the counter-coupling part is arranged on the transmission side antr iebs dress.
  • the coupling part is arranged on the drive side of the coupling and the mating coupling part is arranged on the tool side on the coupling.
  • the coupling between the first drive shaft and the second drive shaft is direct or indirect, that is, additional between the first drive shaft and the be provided second drive shaft arranged connection or transmission parts.
  • the coupling part has a plurality of such projections, in particular distributed at regular intervals and / or along a circumference. In this way, a particularly secure positive connection can be provided.
  • four projections are provided on the coupling part and four complementary recesses are provided in the counter coupling part, wherein the projections and recesses are each arranged at uniform intervals and / or along a circumference of the coupling or mating coupling surfaces.
  • the clutch ⁇ surfaces each comprise an end face gear, in particular Hirth-type toothing. Hirth toothing is particularly easy to manufacture.
  • the invention provides a cooling fluid supply in the tool spindle and an annular transfer region in the housing of the tool spindle, which open into cooling fluid passages in the tool or tool carrier.
  • a cooling fluid supply is also referred to as a rotary feedthrough.
  • a coupling of the cooling circuit or the lubrication circuit to internally supplied tools is executable.
  • the coolant ordefizid be passed directly into the processing zone.
  • At least one shaft sealing ring is provided between the annular transfer region and a spindle bearing. This improves the sealing of the rotary implementation opposite the spindle bearing.
  • the shaft seal consists of a harder material than the tool spindle and / or the housing of the spindle head. This he ⁇ enables that after a short running organg a better fit of the shaft seal is achieved.
  • the invention further provides a coupling element for a machine tool of the type described above, wherein the coupling surface or the mating coupling surface is formed at a front end of the coupling element.
  • the coupling surface or the Ge ⁇ genkupplungs resonance is arranged on a separate coupling element, which is coupled on the one hand with the first drive shaft and on the other hand with the second drive shaft.
  • the coupling element may additionally have an internal toothing, in which instead of a coupling part with tapered projections, a standard coupling part with external teeth can be used.
  • a coupling part with tapered projections instead of a coupling part with tapered projections, a standard coupling part with external teeth can be used.
  • 1 shows a cross section through a machine tool according to an embodiment of the invention
  • 2 is a perspective view of a coupling with egg nem spindle head according to the invention for a machine tool according to an embodiment of the inven tion
  • FIG. 3 shows a further perspective view of the spindle head according to FIG. 2
  • FIG. 4 shows a further perspective view of the spindle head according to FIG. 2.
  • FIG. 1 to 4 are described together, whereby functionally and / or structurally similar or identical components and functional units thus provided with Densel ⁇ reference symbols and are not described separately.
  • the machine tool comprises a spindle head 1, in which a tool spindle 2 is rotatably arranged by means of a spindle bearing 3.
  • the tool spindle 2 has a tool holder 4 with a tool 5 received therein.
  • the tool spindle 2 merges at an end face into a drive shaft 6, which extends radially out of the spindle head and extends at least partially within a receiving shaft 7.
  • the drive shaft 6 has a coupling surface 14 a, which can be brought into engagement with a complementary mating coupling surface 15 a of a coupling element 8, as described below.
  • the drive shaft 6 facing away, so the drive side end face of the coupling element 8 is coupled to a second drive shaft 9 of a drive 10.
  • the drive 10 sets the second drive shaft 9 and thus the tool spindle 2 and the tool 5 received therein in rotation.
  • the coupling element 8 is arranged on the tool-side end 23 of the second drive shaft 9.
  • the invention provides a rotary feedthrough for supplying coolant into the processing zone.
  • the rotary feedthrough comprises feed channels 11 and 12 in the tool holder 4 and the tool spindle 2, can be supplied through the coolant via an annular transfer area 13 in the housing of the spindle head 1 and a cooling of the tool 5 during machining of a workpiece.
  • the annular transfer region 13 opens into the feed channel 12, which initially extends radially inwards and then axially, opens into the tool holder 4 and is connected to the feed channel 11.
  • FIGS 2 to 4 show a coupling 26 between the drive shaft 6 and the coupling element 8 according to an embodiment of the invention.
  • the coupling 26 comprises on the tool side a coupling part 14 which has a coupling surface 14a at its free end-side, drive-side end 22, and a counter-coupling part 15 on the drive side.
  • the coupling surface 14a is provided with a mating coupling surface 15a of a mating coupling part 15 on the drive side
  • the coupling part 14 forms part of the drive shaft 6 and is formed on the drive-side end 22 of the drive shaft 6, while the counter-coupling part 15 is a part of Coupling element 8 forms and on the tool-side end
  • the mating coupling part 15 can be coupled to the drive 10 or non-rotatably connected.
  • the coupling surface 14 a has a plurality of trapezoidal Vorsprün ⁇ ge 17, which are arranged along the circumference of the coupling part 14.
  • the counter-coupling surface 15a has complementary trapezförmi ⁇ ge recesses 18 along the circumference of end portion 19 of the Cylind ⁇ step counter-coupling part 15 duri ⁇ fen.
  • the trapezoidal shape causes the recesses 18 to expand in the axial direction towards the tool-side end 25 of the recesses 19.
  • the mating coupling component to a cylindrical inner wall 20 of the cylindrical end portion 19 has internal teeth 21 which with a complementary external tooth system on a further drive shaft 6 - are brought into engagement - the no projections having at ⁇ play 17 and / or is formed conventionally can.
  • the invention thus relates to a spindle ⁇ head 1 and a machine tool, with a coupling 26 which is disposed between a first drive shaft 6 of the spindle head 1 and a second drive shaft 9 of a drive 10, wherein the coupling 26 is a coupling part 14 with a front-side coupling surface 14a and a counter-coupling part 15 having an end-side counter-coupling surface 15a, wherein the coupling surface 14a has at least one extending in the axial direction and tapering away from the coupling part 14 projection 17, and the counter-coupling surface 15a at least one extending in the axial direction and the counter-coupling part 15th has narrowing out ⁇ saving 18, wherein the projection 17 is preferably engageable with the recess 18 without play.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Machine Tool Units (AREA)

Abstract

L'invention concerne une tête de broche (1) et une machine-outil, comprenant un accouplement (26) disposé entre un premier arbre d'entraînement (6), associé à la tête de broche (1), et un second arbre d'entraînement (9), associé à un moteur (10), ledit accouplement (26) comprenant un élément d'accouplement (14) qui présente une surface d'accouplement terminale (14a) et un élément d'accouplement homologue (15) qui présente une surface d'accouplement terminale homologue (15a), la surface d'accouplement (14a) présentant au moins une saillie (17) axiale se rétrécissant dans la direction opposée à l'élément d'accouplement (14), et la surface d'accouplement homologue (15a) présentant au moins un évidement (18) axial se rétrécissant en direction de l'élément d'accouplement homologue (15), la saillie (17) pouvant coopérer, de préférence sans jeu, avec l'évidement (18).
PCT/EP2016/072060 2015-09-19 2016-09-16 Tête de broche et machine-outil WO2017046385A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015012265.7 2015-09-19
DE102015012265.7A DE102015012265A1 (de) 2015-09-19 2015-09-19 Spindelkopf und Werkzeugmaschine

Publications (1)

Publication Number Publication Date
WO2017046385A1 true WO2017046385A1 (fr) 2017-03-23

Family

ID=57103968

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/072060 WO2017046385A1 (fr) 2015-09-19 2016-09-16 Tête de broche et machine-outil

Country Status (2)

Country Link
DE (1) DE102015012265A1 (fr)
WO (1) WO2017046385A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503522A2 (fr) * 1991-03-13 1992-09-16 DÖRRIES SCHARMANN GmbH Machine-outil, munie des têtes de travail interchangeables
WO2004001249A1 (fr) * 2002-06-19 2003-12-31 Asterika Limited Connecteur entre les elements d'une machine
US20110158744A1 (en) * 2009-12-29 2011-06-30 Dornfeld Michael S Face coupling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206168A1 (de) * 2002-02-14 2003-08-21 Guehring Joerg Kupplung für mudular aufgebaute Werkzeughalterarme
JP2004293637A (ja) * 2003-03-26 2004-10-21 Kayseven Co Ltd 軸継手
DE102007008837A1 (de) * 2007-02-23 2008-08-28 Esa Eppinger Gmbh Kupplungseinrichtung für Werkzeughalter oder Werkstückspanneinrichtungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503522A2 (fr) * 1991-03-13 1992-09-16 DÖRRIES SCHARMANN GmbH Machine-outil, munie des têtes de travail interchangeables
WO2004001249A1 (fr) * 2002-06-19 2003-12-31 Asterika Limited Connecteur entre les elements d'une machine
US20110158744A1 (en) * 2009-12-29 2011-06-30 Dornfeld Michael S Face coupling

Also Published As

Publication number Publication date
DE102015012265A1 (de) 2017-03-23

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