CN102756282B - 机床的工作台单元 - Google Patents
机床的工作台单元 Download PDFInfo
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
- B23Q1/522—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair which is perpendicular to the working surface
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/48—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs
- B23Q1/4852—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single sliding pair followed perpendicularly by a single rotating pair
- B23Q1/4857—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs and rotating pairs a single sliding pair followed perpendicularly by a single rotating pair followed perpendicularly by a single rotating pair
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
- B23Q1/5406—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair
- B23Q1/5425—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed perpendicularly by a single rotating pair followed perpendicularly by a single sliding pair
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- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
- B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
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- 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
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
- Y10T408/561—Having tool-opposing, work-engaging surface
- Y10T408/5614—Angularly adjustable surface
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- 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
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/304536—Milling including means to infeed work to cutter
- Y10T409/305544—Milling including means to infeed work to cutter with work holder
- Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
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- 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
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/304536—Milling including means to infeed work to cutter
- Y10T409/305544—Milling including means to infeed work to cutter with work holder
- Y10T409/305656—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation
- Y10T409/305824—Milling including means to infeed work to cutter with work holder including means to support work for rotation during operation with angular movement of work
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- 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
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/306664—Milling including means to infeed rotary cutter toward work
- Y10T409/307448—Milling including means to infeed rotary cutter toward work with work holder
- Y10T409/307504—Indexable
Abstract
本发明提供一种机床的工作台单元,使倾斜工作台的平衡良好以减小绕水平轴线的回转半径和惯性矩。AC轴单元(6)包括被保持成能够在基座(10)上绕A轴回转分度的耳轴(11)、和被设置成能够在所述耳轴(11)上绕与A轴正交的C轴旋转分度的旋转工作台(12),其中,将设于耳轴(11)内并驱动旋转工作台(12)旋转的马达(22)以马达轴的轴线(P)位于由A轴和C轴形成的平面上的方式进行配置。
Description
技术领域
本发明涉及机床的工作台单元,所述机床的工作台单元具备:倾斜工作台,所述倾斜工作台被保持成能够绕水平轴线回转分度;和旋转工作台,所述旋转工作台被保持成能够在所述倾斜工作台上绕与水平轴线正交的垂直轴线旋转分度。
背景技术
例如在立式加工中心中,在底座上设有作为工作台单元的耳轴单元(AC轴单元)。该耳轴单元具备:作为倾斜工作台的耳轴,其被保持成能够在可借助底座上的Y轴引导面向Y轴移动的基座上绕与X轴平行的水平轴线即A轴回转分度;和旋转工作台,其被保持成能够在所述耳轴上绕与A轴正交的垂直轴线即C轴旋转分度(例如参考专利文献1)。
并且,作为这种工作台单元的驱动装置,已知如专利文献2所公开的结构:采用内设于基座的马达和齿轮进行倾斜工作台的回转驱动,并且,使一对齿轮与在倾斜工作台内与旋转工作台同轴地设置的齿轮部啮合,并通过马达利用带和带轮等使两个齿轮同步旋转,来进行旋转工作台的旋转驱动。
专利文献1:日本特开2007-319951号公报
专利文献2:日本特开平10-118867号公报
在专利文献2的驱动装置中,倾斜工作台内的马达在倾斜工作台处于水平姿势的俯视图中相对于水平轴线向Y轴方向偏移设置,因此倾斜工作台处于不平衡状态,绕水平轴线的回转半径增大从而惯性矩也增大,使得所需的驱动力增大。
发明内容
因此,本发明的目的在于提供一种机床的工作台单元,能够使倾斜工作台的平衡良好以减小绕水平轴线的回转半径和惯性矩,能够以小的驱动力驱动。
为了达成上述目的,本发明的第一方面的特征在于,将设于倾斜工作台内并驱动旋转工作台旋转的马达以使马达轴的轴线位于由水平轴线和垂直轴线形成的平面上的方式进行配置。
本发明第二方面的特征在于,在第一方面的结构中,倾斜工作台在基座上被双臂式支承,马达在以垂直轴线为中心的点对称位置配置有一对。
本发明第三方面的特征在于,在第一方面的结构中,倾斜工作台在基座上被单臂式支承。
本发明第四方面的特征在于,在第一至第三方面中的任一方面的结构中,在旋转工作台与马达之间介入有减速器。
根据本发明,能够使倾斜工作台的平衡良好以减小绕水平轴线的回转半径和惯性矩。由此能够以小的驱动力进行驱动。特别是对倾斜工作台进行双臂式支承并配置有一对马达的话,即使是比较小的马达也能够得到大的驱动转矩,并且能够使齿轮的齿隙相互抵消,能够得到紧凑且精度高的工作台单元。
附图说明
图1是立式加工中心的立体图。
图2是AC轴单元的说明图,(A)是俯视图,(B)是主视图,(C)是耳轴的侧视图。
图3是变更例的AC轴单元的说明图,(A)是俯视图,(B)是主视图,(C)是耳轴的侧视图。
图4是示出工作台单元的变更例的立式加工中心的说明图。
标号说明
1、30:立式加工中心;2:底座;3:横轨;6:AC轴单元;8:主轴头;9:主轴;10:基座;11:耳轴;12、34:旋转工作台;13:支承部;14:支轴;15、16、17:轴承;18、35:齿轮部;19、38:减速器;20、37:齿轮;21、23:带轮;22、25、36:马达;32:工作台单元;33:倾斜工作台;P:轴线。
具体实施方式
下面,基于附图说明本发明的实施方式。
图1是作为机床的一例的五轴控制的立式加工中心的立体图,在立式加工中心1中,标号2为底座,标号3为门形结构的横轨(crossrail),在底座2的上表面设有Y轴导轨4、4,另一方面,在横轨3的前表面设有X轴导轨5、5。在Y轴导轨4、4上,以能够向Y轴方向移动的方式设置有作为工作台单元的耳轴结构的AC轴单元6,在X轴导轨5、5以能够向X轴方向移动的方式设置有滑鞍7。在滑鞍7的前面,以能够向Z轴方向移动的方式设置有主轴头8,所述主轴头8在下端具备主轴9。
AC轴单元6在正面观察呈U字状的基座10具备作为倾斜工作台的耳轴11,所述基座10在底座2上移动,所述耳轴形成为宽度宽的U字状,在所述耳轴11上具备旋转工作台12,在所述旋转工作台12能够设置用于载置作为加工对象的工件的托盘。如图2所示,耳轴11的向左右突出设置的支轴14、14由轴承15、15轴支承在基座10两端的支承部13、13内,从而耳轴11被支承成能够以与X轴方向平行的水平轴线即A轴为中心回转。在基座10内设有未图示的马达和减速机构,通过向支轴14传递旋转,能够使耳轴11向绕A轴的预定的回转位置回转分度。
而且,在耳轴11内,旋转工作台12由上下的轴承16、17轴支承,从而旋转工作台12被支承成能够以与A轴方向正交的垂直轴线即C轴为中心进行360度旋转。在轴承16、17之间,在旋转工作台12以同轴且能够一体旋转的方式设有齿轮部18。
并且,在齿轮部18的左右两侧,以C轴为中心左右对称地配置有一对减速器19、19,所述一对减速器19、19在上侧的输出轴具备齿轮20并且在下侧的输入轴具有带轮21,并且使齿轮20、20与齿轮部18啮合。减速器19内设有公知的行星齿轮减速机构。
并且,在减速器19、19的左右两侧,以C轴为中心左右对称地配置有一对马达22、22,所述一对马达22、22在朝下的马达轴具备带轮23,分别在带轮23与相邻的减速器19的带轮21之间张设有带24。
该马达22使马达轴的轴线P位于由C轴-A轴形成的平面上,并且与C轴平行地配置。
另外,利用未图示的数控装置(NC装置)来控制该马达22和使耳轴11回转分度的马达的驱动、AC轴单元6和滑鞍7、主轴头8的移动等。
在如上所述地构成的立式加工中心1中,通过耳轴11的绕A轴的回转动作、旋转工作台12的绕C轴的旋转动作以及AC轴单元6的向Y轴方向的滑动动作,将在旋转工作台12上固定于托盘的工件定位于期望的加工位置,然后一边使安装有工具的主轴9向X轴和Z轴方向移动一边进行加工。
此时,在耳轴11内,由于使旋转工作台12旋转的马达22、22以轴线P位于C轴-A轴平面上的方式进行配置,因此绕A轴的回转半径变小。因此,使耳轴11回转分度时的惯性矩变小。
这样,根据上述方式的立式加工中心1的AC轴单元6,通过将设于耳轴11内并驱动旋转工作台12旋转的马达22以使马达轴的轴线P位于由A轴和C轴形成的平面上的方式进行配置,从而能够使耳轴11的平衡良好以减小绕A轴的回转半径和惯性矩。由此能够以小的驱动力进行驱动。
特别地,在此,对耳轴11在基座10上进行双臂式支承并在以C轴为中心的点对称位置配置有一对马达22,因此即使是比较小的马达22也能够得到大的驱动转矩,并且能够使齿轮20的齿隙相互抵消,能够得到紧凑且精度高的AC轴单元6。
另外,在上述方式中,在旋转工作台的齿轮部与马达之间介入有减速器和带传递机构,但也可以取代该结构而使设于马达轴的齿轮直接与旋转工作台的齿轮部啮合,或者在马达轴的齿轮与旋转工作台的齿轮部之间介入有一个或多个齿轮。
而且,将马达以马达轴的轴线与C轴平行的方式纵向配置,但不限定于此,只要是位于由A轴-C轴形成的平面上的话,也可以例如图3所示地,将旋转工作台12的齿轮部18形成为锥齿轮,在马达25的马达轴设置锥齿轮26并使该锥齿轮26直接与齿轮部18啮合,从而将马达25以马达轴的轴线P与A轴平行的方式横向配置。当然,在该情况下也可以在齿轮部18与锥齿轮26之间介入有采用有锥齿轮的减速器等。并且,也可以是,在该平面上,使马达轴的轴线P以相对于A轴和C轴形成预定的角度(例如45度)的方式倾斜。
并且,在上述方式中,将本发明应用在了立式加工中心的AC轴单元,但只要是具备包括倾斜工作台和旋转工作台的工作台单元的机床的话,在卧式加工中心等也能够采用本发明。
即使是例如图4所示的立式加工中心30那样的类型也能够应用本发明,在该立式加工中心30中,在Y轴工作台31上具备工作台单元32,所述工作台单元32由倾斜工作台33和旋转工作台34构成,所述倾斜工作台33呈向前方突出的L字状并被单臂式支承,并且该倾斜工作台33能够绕与Y轴平行的水平轴线即B轴回转分度,所述旋转工作台34设于该倾斜工作台33上并能够绕与B轴正交的垂直轴线即C轴旋转分度。在该情况下,在倾斜工作台33内配置一个马达36,并使该马达36的马达轴的轴线P位于B轴-C轴平面上,将设于马达轴的齿轮37的旋转经由减速器38和带传递机构旋转传递至设于旋转工作台34的齿轮部35即可。当然,在该情况下也能够去掉减速器38等而使齿轮37直接与齿轮部35啮合。
Claims (4)
1.一种机床的工作台单元,
所述机床的工作台单元包括:
倾斜工作台,所述倾斜工作台被保持成能够在基座上绕水平轴线回转分度;和
旋转工作台,所述旋转工作台被保持成能够在所述倾斜工作台上绕与所述水平轴线正交的垂直轴线旋转分度,
所述机床的工作台单元的特征在于,
将设于所述倾斜工作台内并驱动所述旋转工作台旋转的马达以使马达轴的轴线位于由所述水平轴线和垂直轴线形成的平面上的方式进行配置,以减小绕所述水平轴线的回转半径。
2.根据权利要求1所述的机床的工作台单元,其特征在于,
所述倾斜工作台在所述基座上被双臂式支承,所述马达在以所述垂直轴线为中心的点对称位置配置有一对。
3.根据权利要求1所述的机床的工作台单元,其特征在于,
所述倾斜工作台在所述基座上被单臂式支承。
4.根据权利要求1至3中的任意一项所述的机床的工作台单元,其特征在于,
在所述旋转工作台与所述马达之间介入有减速器。
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JP2011097421A JP5774360B2 (ja) | 2011-04-25 | 2011-04-25 | 工作機械のテーブルユニット |
JP2011-097421 | 2011-04-25 |
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JP (1) | JP5774360B2 (zh) |
CN (1) | CN102756282B (zh) |
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