CN102858491B - 刀具转塔 - Google Patents

刀具转塔 Download PDF

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CN102858491B
CN102858491B CN201180020606.6A CN201180020606A CN102858491B CN 102858491 B CN102858491 B CN 102858491B CN 201180020606 A CN201180020606 A CN 201180020606A CN 102858491 B CN102858491 B CN 102858491B
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capstan head
driving
driving element
cutter
output device
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CN102858491A (zh
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J·施蒂费尔
D·林德
G·席普斯
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Zefracht Co.,Ltd.
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Sauter Feinmechanik GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
    • B23B29/32—Turrets adjustable by power drive, i.e. turret heads
    • 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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/24—Tool holders for a plurality of cutting tools, e.g. turrets
    • B23B29/32—Turrets adjustable by power drive, i.e. turret heads
    • B23B29/323—Turrets with power operated angular positioning devices
    • 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
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/107—Retention by laterally-acting detents, e.g. pins, screws, wedges; Retention by loose elements, e.g. balls
    • B23B31/1075—Retention by screws
    • B23B31/1076—Retention by screws with conical ends
    • 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
    • B23Q11/04—Arrangements preventing overload of tools, e.g. restricting load
    • 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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/022—Indexing equipment in which only the indexing movement is of importance
    • B23Q16/025—Indexing equipment in which only the indexing movement is of importance by converting a continuous movement into a rotary indexing movement
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • 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
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • B23Q16/10—Rotary indexing
    • 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
    • B23Q2220/00—Machine tool components
    • B23Q2220/002—Tool turrets
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5152—Plural diverse manufacturing apparatus including means for metal shaping or assembling with turret mechanism
    • Y10T29/5154—Plural diverse manufacturing apparatus including means for metal shaping or assembling with turret mechanism tool turret
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5152—Plural diverse manufacturing apparatus including means for metal shaping or assembling with turret mechanism
    • Y10T29/5154—Plural diverse manufacturing apparatus including means for metal shaping or assembling with turret mechanism tool turret
    • Y10T29/5155—Rotary tool holder
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • 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
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2585—Tool rest
    • Y10T82/2587—Turret type holder [e.g., multiple tools, etc.]

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Insertion Pins And Rivets (AREA)
  • Manipulator (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

一种刀具转塔，带有：刀具盘（2），该刀具盘可围绕限定枢转轴（26）的支柱（32）枢转到这样的位置，在所述位置中，至少一个可固定在刀具盘（2）上的加工刀具处于加工位置；驱动装置（14），其驱动器件（8，10）通过可控制的耦联装置（18）与输出器件（20，22）连接，输出器件用于驱动所述刀具盘（2）或所述加工刀具，其特征在于，所述驱动装置（14）与驱动器件（8，10）和用于驱动加工刀具的输出器件（22）一起设置在刀具盘（2）内部，并且用于枢转驱动所述刀具盘（2）的输出器件具有在所述刀具盘（2）外部布置在所述支柱（32）上的传动装置系统（34），所述传动装置系统带有沿着支柱（32）延伸的输出轴（70）。

Description

刀具转塔
技术领域
本发明涉及一种刀具转塔，所述刀具转塔带有刀具盘，该刀具盘可围绕限定枢转轴的支柱枢转到这样的位置，在所述位置中，至少一个可固定在刀具盘上的加工刀具处于加工位置，该刀具转塔还带有驱动装置，其驱动器件通过可控制的耦联装置与输出器件连接，所述输出器件用于驱动刀具盘或加工刀具。
背景技术
这种刀具转塔尤其应用在工业加工中，条件是：借助于共用的驱动装置除了实现枢转刀具盘以选择当前加工过程所需的加工刀具之外，也应实现旋转的加工刀具的驱动。
由US7475463B1已知一种切削的机床，共用的驱动装置根据选择用于驱动刀具盘或旋转的加工刀具，该加工刀具通过夹持装置安装在刀具盘上。在已知的解决方案中规定，通过驱动装置驱动的并且配设有两个形式为轴向相互错移布置的啮合部的驱动器件的轴为了根据选择驱动刀具盘或加工刀具移动到第一或第二轴向位置。在轴的第一轴向位置中，轴的第一驱动器件与用于驱动加工刀具的输出器件脱耦，而形式为外啮合部的第二驱动器件与通过其可以实现刀具盘的枢转的输出器件接合。在轴的第二轴向位置中，为了驱动加工刀具设置在轴上的第一驱动器件与用于驱动加工刀具的驱动器件接合，使得加工刀具可以被置于旋转运动。已知的解决方案结构较大，这以不利的方式大大限制了刀具转塔的使用可能性。
发明内容
从该现有技术出发，本发明的目的是提供一种刀具转塔，该刀具转塔的特征在于简单、紧凑并且可靠的构造方式，该构造方式在其运行中适合于在工业制造中要求的小制造公差。
按本发明，该目的通过刀具转塔实现，该刀具转塔在其整体上具按本发明的有利的特征。
按照本发明，驱动装置与驱动器件和用作加工刀具的驱动器的输出器件一起布置在刀具盘上，而用作刀具盘的枢转驱动器的输出器件具有在刀具盘之外布置在支柱上的传动装置系统，该传动装置系统带有沿着支柱延伸的输出轴，实现了包括刀具盘和支柱的刀具转塔的整个系统特别紧凑的结构。通过用于刀具盘的枢转驱动的输出器件配属有在刀具盘之外在支柱上的输出轴和传动装置系统，刀具盘可以特别紧凑地构造，尽管在其中设计有用于枢转运动的共用驱动和旋转刀具的驱动，其中，旋转刀具的驱动可以说用作加工刀具的直接驱动，而枢转驱动转移到支柱上，由此刀具盘的质量本身不再次通过枢转驱动的传动装置系统的质量加重。
以特别有利的方式，传动装置系统具有沃尔夫罗母(Wolfrom)行星齿轮传动装置。因为Wolfrom行星齿轮传动装置在最小的空间需求时确保了非常高的传动比，则在支柱方面也仅需要较小的结构空间，以便将驱动装置的驱动轴较高的转速(如其对于加工刀具的直接驱动所必需的那样)转化为设计用于枢转驱动的输出轴的相对小的转速。
在驱动器件可由驱动装置共用的驱动轴驱动时，用于根据选择与用于枢转驱动和加工刀具的驱动的驱动器件耦联的耦联装置能够通过操纵装置可控制，借助于操纵装置，相应的驱动器件可相对驱动装置的驱动轴同轴或相对驱动装置的驱动轴平行地移动。通过相应的驱动器件相对驱动轴可同轴移动的布置，一方面要求尽可能小的结构空间，此外通过同轴布置获得了驱动器件通过驱动装置的驱动轴没有间隙的直接驱动。
在优选的实施例中，第二驱动器件与第一驱动器件同轴地设置在刀具盘中的容纳腔内部。通过第二驱动器件相对第一驱动器件同轴布置实现了节约空间的构造。
在一种优选的实施例中，具有两个驱动器件的耦联装置相对驱动轴抗转动并且可轴向移动地支承在驱动轴上。通过耦联装置与驱动轴的抗转动连接确保了从驱动装置到耦联装置的扭矩传递。通过耦联装置在驱动轴上的轴向可移动性，可以为了根据选择驱动刀具盘或加工刀具规定耦联装置分别配属的轴向位置。
在优选的实施例中，耦联装置的操纵装置包括液压缸，该液压缸至少部分由驱动轴包围并且在操纵状态将驱动器件在容纳腔内部朝要驱动的加工刀具的输出轴的方向进给，而在未操纵的状态沿相反方向进给，以用于枢转驱动刀具盘。借助于液压缸实现的操纵装置有助于紧凑的结构方式。通过这种布置也确保了，对于圆柱形设计的驱动器件，可以由液压缸环形地对其施加均匀分布的进给力，使得尽可能排除了驱动器件在沿着驱动轴进给过程中的倾斜或阻碍。
在优选的实施例中设计为，借助于锁止装置可相对支柱限定地将刀具盘固定到其可预定的枢转位置中。限定地固定在可预定的枢转位置中对于高精度地加工工件是不可缺少的，因为例如在切削加工时在加工刀具上会出现非常高的力。即便在这种负荷下，借助于夹持装置固定在刀具盘上的加工刀具由于锁止装置稳定地保持在其规定位置中。以特别有利的方式，可以为锁止装置设置所谓的Hirth啮合部，其在锁止状态非常稳定地锁止时还允许刀具盘足够高的进行分开的枢转。
鉴于支柱特别紧凑的结构方式，系统可以这样设计，即，相互同轴地沿着支柱延伸的各空心轴形成Wolfrom行星齿轮传动装置的驱动轴和输出轴，该Wolfrom行星齿轮传动装置与刀具盘间隔。
附图说明
以下根据在附图中示出的实施例详细说明本发明。在附图中示出：
图1A和1B是刀具转塔的实施例的中央截面图，其中，在图1A中示出了刀具盘以及支柱的相连部分的区域，在图1B中示出了支柱的其余部段；
图2仅仅是刀具盘朝向加工刀具的夹持装置的部分以及相连的支柱相对图1略微放大示出的剖视图，其中，示出了刀具盘激活的枢转驱动的运行状态，以及
图3是刀具盘局部剖切的立体局部视图，其中，示出了激活的枢转驱动的运行状态。
具体实施方式
在附图所示的刀具转塔4的实施例中，设置有用于根据选择地枢转驱动刀具盘2和旋转地驱动至少一个加工刀具(未示出)的驱动装置14，该加工刀具可借助于夹持装置6固定在刀具盘2上。借助于可由共用的、具有驱动轴12的驱动装置14驱动的两个驱动器件8，10实现驱动。驱动器件8，10通过分别可由至少一个操纵装置16控制的耦联装置18能够与输出器件20，22连接。在此，输出器件20用于驱动刀具盘2，而输出器件22用于驱动加工刀具。驱动装置14与驱动器件8，10和用于驱动加工刀具的输出器件22一起作为整体布置在刀具盘2内部，而用于枢转驱动刀具盘2的输出器件20不直接、也就是在刀具盘2内部与刀具盘驱动连接，而是通过在刀具盘2之外布置在刀具转塔4的支柱32上的传动装置系统34与刀具盘2作用连接。该传动装置系统构造为Wolfrom行星齿轮传动装置34的形式并且与刀具盘2间隔地设置在限定刀具盘2的枢转轴的支柱32上，以下将详细说明该传动装置系统。驱动装置14与刀具盘2内部的驱动器件20，22一起设置在刀具盘2的容纳腔24内部。
借助于操纵装置16，相应的驱动器件8，10与驱动装置14的驱动轴12同轴布置。具有两个驱动器件8和10的耦联装置18抗转动但能沿耦联装置18的中间轴26相对驱动轴12轴向移动地支承在驱动轴12上。
如果借助于刀具盘的枢转运动将借助于夹持装置6固定在刀具盘上的加工刀具围绕枢转轴28调节到加工位置，则这样操纵耦联装置18，使得耦联装置18从其在图3所示的位置向右进给，以便通过将驱动器件8与输出器件22耦联驱动加工刀具。另一方面，为了枢转驱动刀具盘2，耦联装置18处于图3所示的轴向位置，该位置也在其它附图中示出。在此，在通过驱动装置14置于旋转中的耦联装置18中，通过驱动器件10向齿轮48传递旋转运动，该驱动器件在耦联装置18的该位置中与输出器件20接合。与齿轮48啮合的中间齿轮50延续驱动连接到设置在支柱32上的行星齿轮传动装置34。
从驱动轴12到耦联装置18的力传递在所示的实施例中通过耦联装置18外环周侧的啮合部42实现，这些啮合部接合到驱动轴12的凹槽中的内环周侧的啮合部44中。为了将耦联装置18移动到相应的切换或轴向位置，操纵装置16具有液压缸74。
为了向行星齿轮传动装置34传递力，中间齿轮50与齿环52啮合，该齿环位于空心轴68凸缘状展宽的凸台46上。同心地包围支柱32的空心轴68在其背对凸台46的端部通过细齿部64(见图1B)与行星齿轮传动装置34环绕的壳体部件62驱动连接，该壳体部件位于固定在支柱32上的壳体部件56内部。该固定在支柱上的壳体部件与可旋转运动的壳体部件54一起限定出用于至少一个行星齿轮40的空间，其中，壳体部件54和壳体部件56分别形成一个内啮合部36或38。与至少一个行星齿轮40啮合的内啮合部36，38具有略微不同的齿数，因此根据Wolfrom传动机构原理对于可旋转的壳体部件54得到相比空心轴68的输入转速小得多的转速。
环绕的壳体部件54与输出侧的输出轴70连接，该空心轴同轴地包围输入侧的空心轴68。能以明显下降的转速驱动的输出轴70本身与容纳盘71固定连接。所述输出轴70是空心轴。容纳盘在其朝向刀具盘2的端部76与刀具盘2连接，以便为刀具盘形成枢转驱动。为了将刀具盘2形锁合地锁止在相应限定的枢转位置中，设置有形式为锁止体的锁止装置58，该锁止体可液压地移动，以便与设置在锁止体和容纳盘71之间的端面啮合部(HirthVerzahnung)60进入接合或脱开接合。

Claims (9)

1.一种刀具转塔，带有：刀具盘(2)，所述刀具盘可围绕限定枢转轴(26)的支柱(32)枢转到下述的位置，在所述位置中，至少一个可固定在刀具盘(2)上的加工刀具处于加工位置；驱动装置(14)，该驱动装置的第一驱动器件(8)通过可控制的耦联装置(18)与第一输出器件(22)连接，且驱动装置的第二驱动器件(10)通过可控制的耦联装置(18)与第二输出器件(20)连接，所述第二输出器件用于驱动所述刀具盘(2)，且所述第一输出器件用于驱动所述加工刀具，其特征在于，所述驱动装置(14)与第一驱动器件(8)以及第二驱动器件(10)和用于驱动加工刀具的第一输出器件(22)一起设置在刀具盘(2)内部，并且用于枢转驱动所述刀具盘(2)的输出器件具有在所述刀具盘(2)之外布置在所述支柱(32)上的传动装置系统(34)，所述传动装置系统带有沿着支柱(32)延伸的输出轴(70)。
2.如权利要求1所述的刀具转塔，其特征在于，所述传动装置系统具有沃尔夫罗姆行星齿轮传动装置。
3.如权利要求1或2所述的刀具转塔，其特征在于，所述第一驱动器件(8)和第二驱动器件(10)由所述驱动装置(14)的共用的驱动轴(12)驱动。
4.如权利要求1或2所述的刀具转塔，其特征在于，所述耦联装置(18)可通过操纵装置(16)控制，借助于操纵装置，相应的第一驱动器件(8)或第二驱动器件(10)可相对驱动装置(14)的驱动轴(12)同轴地移动或相对驱动装置的驱动轴平行地移动。
5.如权利要求4所述的刀具转塔，其特征在于，第二驱动器件(10)与第一驱动器件(8)同轴地设置在所述刀具盘(2)中的容纳腔(24)内部。
6.如权利要求5所述的刀具转塔，其特征在于，具有第一驱动器件(8)和第二驱动器件(10)的耦联装置(18)相对驱动轴抗转动并且轴向可移动地支承在所述驱动轴(12)上。
7.如权利要求3所述的刀具转塔，其特征在于，耦联装置(18)的操纵装置(16)包括液压缸，所述液压缸至少部分由驱动轴(12)包围并且在操纵状态将第一驱动器件(8)和第二驱动器件(10)在容纳腔(24)内部朝要驱动的加工刀具的第一输出器件(22)的方向进给，而在未操纵的状态沿相反方向进给，以用于枢转驱动刀具盘(2)。
8.如权利要求1或2所述的刀具转塔，其特征在于，借助于锁止装置(58)可相对支柱(32)限定地将刀具盘(2)固定在其可预定的枢转位置中。
9.如权利要求2所述的刀具转塔，其特征在于，相互同轴地沿着支柱(32)延伸的各空心轴(68)形成沃尔夫罗姆行星齿轮传动装置的驱动轴和输出轴，所述沃尔夫罗姆行星齿轮传动装置与所述刀具盘(2)间隔。
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