CN101043987B - 用于将刀具固定在手持式工具机的驱动轴上的装置及刀具 - Google Patents
用于将刀具固定在手持式工具机的驱动轴上的装置及刀具 Download PDFInfo
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Abstract
本发明涉及一种装置,具有一个定心元件(10)及至少一个形锁合元件(12),用于将一个可轴向插套上的刀具(14)固定在手持式工具机(28)的可被振荡地驱动的驱动轴(16)上,其中,定心元件(10)被设置用于刀具(14)相对驱动轴(16)的定心及形锁合元件(12)被设置用于确定刀具(14)相对驱动轴(16)的转动位置。本发明提出:形锁合元件(12)在径向上被设置在定心元件(10)之外。
Description
技术领域
本发明涉及一种用于将刀具固定在手持式工具机的可被振荡地驱动的驱动轴上的装置。
本发明还涉及一种刀具。
背景技术
由EP 1213107A1公开了一种用于将一个可轴向插套上的刀具固定在手持式工具机的可被振荡地驱动的驱动轴上的装置。该装置包括一个定心凹空及六个在定心凹空轮廓中构造为尖端的形锁合元件,因此这些形锁合元件为定心凹空的一部分。
发明内容
按照本发明,提出了一种装置,具有一个定心元件及至少一个形锁合元件,用于将一个可轴向插套上的刀具固定在手持式工具机的一个可被振荡地驱动的驱动轴上,其中,定心元件被设置用于刀具相对驱动轴的定心及形锁合元件被设置用于确定刀具相对驱动轴的转动位置,其中,形锁合元件在径向上被设置在定心元件之外,其中:形锁合元件具有至少一个倒角,用于支持推插过程。
按照本发明,还提出了一种刀具,具有一个定心元件及形锁合元件,用于轴向插套及固定在手持式工具机的一个可被振荡地驱动的驱动轴上,其中,定心元件被设置用于相对驱动轴的定心及形锁合元件被设置用于确定相对驱动轴的转动位置,其中,形锁合元件在径向上被设置在定心元件之外,其中:该刀具设置有十二个布置在一个圆周上的形锁合元件。
本发明涉及用于将一个可轴向插套上的刀具固定在手持式工具机的可被振荡地驱动的驱动轴上的装置,它具有一个定心元件及至少一个形锁合元件,其中,定心元件被设置用于刀具相对驱动轴的定心及形锁合元件被设置用于确定刀具相对驱动轴的转动位置。
本发明提出:形锁合元件在径向上被设置在定心元件之外。由此可达到定心功能与固定功能和/或转矩传递功能的有利分离,以致可达到舒适的固定过程。通过设置在径向外部的形锁合元件可在形锁合元件区域中相对小的材料负荷的情况下达到用于传递转矩的大力臂,而不会在定心过程中失去精确性。
在本发明方面,对于“设置”也可理解为“设计”及“装备”。
在本发明的一个构型中提出,定心元件具有圆形横截面。由此可达到:在定心过程后可自由地选择转动位置及这与定心过程无关。在此,定心元件既可构造成圆形的凹空也可构造成具有圆形横截面的栓柱。
当形锁合元件被设置用于配合到凹空时,可实现稳固及可靠的形锁合。但本发明也可考虑其它构型,其中形锁合元件例如由一个齿结构构成并且被设置用于配合到一个相关联的齿结构中。当形锁合元件至少具有一个延伸在轴向上的接触面时,可达到形锁合元件的可靠固定。
如果形锁合元件被设置用于将刀具固定在至少三个转动位置中时,则该装置可有利地适于固定具有三个可能的工作位置的,尤其是具有三对称的刀具,例如一个三角形磨削盘。
如果形锁合元件被设置用于将刀具固定在至少四个转动位置中时,则该装置可有利地被设置用于固定具有四个可能的工作位置的刀具,尤其是适于固定具有四对称或具有相差90°的工作位置的刀具。例如是一个插入式锯片。
当形锁合元件被设置用于将刀具固定在至少十二个转动位置中时,则可得到一个可通用地用于多个不同类型的刀具的装置。尤其当转动位置被均匀地分布在一个角度范围上时,可在可靠地传递转矩的同时实现灵活的调节。
当该角度范围为360°时,可达到一个旋转对称的装置。在此,尤其在十二旋转对称的情况下将得到一个有利的可灵活用于具有三对称及具有四对称的刀具的装置,该装置尤其是不仅适于固定一个三角形磨削盘也适于固定一个插入式锯片。
当与该形锁合元件的一个位置对应的半径大于定心元件的半径的两倍时,则刀具的精确定心的同时可达到材料负荷小的转矩传递。如果多个形锁合元件设置在一个圆上,则该圆的半径可配置给形锁合元件,在其他情况下,则将形锁合元件或它们的一个边缘到驱动轴的转动轴线的距离配置给形锁合元件。
当形锁合元件被销形地构成时,可得到成本上有利的及可靠的形锁合元件。
如果该装置具有多个相同形状的、均匀分布在围绕定心元件的圆上的形锁合元件,则在转矩传递时可避免装置的不对称负荷。
当形锁合元件具有至少一个基本上向着圆周方向的携动面时,则可避免材料的点状负荷。这些面的方向由面的法线来确定。在此,当携动面被平地构造时,则可结构上简单地实现精确配合的携动面或与携动面相关联的接触面。
当形锁合元件具有至少一个用于支持推插过程的倒角时,则可达到向形锁合元件的配合转动位置的方便导向。
如果该装置包括一个用于产生一个作用在刀具上的夹紧力的弹性元件,则可达到无间隙的固定及可避免装置的过载。当弹性元件的闭锁力配置给固定部件、尤其一个螺钉的给定力矩时,则可使操作者明了固定部件的给定力矩。
当定心元件被构造成固定螺钉时,则可得到节省成本的装置。
如果弹性元件被构造成盘簧时,则可有利地成本合适地制造它及可使用将刀具轴向压紧在驱动轴上的压紧法兰。
如果定心元件的直径在4与8mm之间时,则可在足够的稳定性的情况下达到足够精确的定心。
此外,本发明涉及一种刀具,它具有一个定心元件及一个形锁合元件,用于插接及固定在手持式工具机的一个可被振荡地驱动的驱动轴上,其中,定心元件被设置用于相对驱动轴的定心及形锁合元件被设置用于确定相对驱动轴的转动位置。
本发明提出,形锁合元件在径向上被设置在定心元件之外。由此可得到一种刀具,它在固定过程中可被固定在驱动轴上,该固定过程包括一个与定心过程无关的、用于确定转动位置的过程。
当形锁合元件被配置给驱动轴的一个相关联的形锁合元件时,可达到刀具与驱动轴之间可靠的形锁合的连接。
当形锁合元件被构造成凹空时,可达到成本上特别有利的、可更换的刀具。但本发明也可考虑这样的构型,其中形锁合元件被构造成突出的造型,它配合在驱动轴上的凹空中。
附图说明
本发明的其它优点可从以下的附图说明中得到。在附图中表示出本发明的实施例。附图及说明书组合地包括多个特征。本领域技术人员可符合目的地个别地考察这些特征及总结出有意义的其它组合。
附图表示:
图1:一个具有用于固定可轴向地插套上的刀具的定心部件及形锁合元件的手持式工具机,
图2:图1中手持式工具机在一个定心过程中的构型,
图3:图1及2中刀具的一部分,及
图4:图1至3中手持式工具机的接触法兰。
具体实施方式
图1示出一个具有可被振荡地驱动的驱动轴16的手持式工具机28,该驱动轴通过一个滚珠轴承30及一个滚针轴承32支承在手持式工具机的一个在图中被取走一半的壳体34中。该手持式工具机28包括一个这里未示出的电动机,该电动机通过一个电动机轴驱动一个偏心盘,一个与驱动轴16无相对转动地连接的臂36配合在该偏心盘中,由此该偏心盘的旋转运动产生出臂36及由此驱动轴16的振荡运动。
在驱动轴16的一个从壳体34伸出的端部上,该手持式工具机28具有一个用于固定可轴向地插套上的刀具14的装置,该装置包括一个盘状的接触法兰38、一个固定螺钉42及一个被构造为盘簧的弹性元件24。该装置用于刀具14与驱动轴16之间的无相对转动及轴向固定的连接,以使得驱动轴16的振荡式运动传递为刀具14的振荡式摆动运动。
接触法兰38具有一个与驱动轴16垂直延伸的圆形接触面,在该接触面上在一个由整个圆周给出的角度范围上均匀分布地设有总共十二个具有梯形横截面的销状的形锁合元件12。在接触法兰38的中心设有一个被构造成盲孔的定心元件10(图2),它具有一个这里未示出的内螺纹,用于接收固定螺钉42。
形锁合元件12在径向上被设置在定心元件10之外。在其上设置着形锁合元件12的圆的半径18超过定心元件10的半径的四倍。形锁合元件12在侧向具有一些携动面22,这些携动面相对驱动轴16的转动轴线径向向外及在轴向方向上延伸。此外,这些形锁合元件12在其背着手持式工具机28本体的边缘上设有倒角46,用于支持刀具14的推插过程(图4)。
刀具14是可能的多种类型的插接式刀具的一部分,它包括插入式锯片、铣刀、磨削盘及切割刀具。在一个固定区段44-该区段在所有类型的刀具上是相同的-中,刀具14具有十二个布置在一个圆上的、构造成凹空或孔的形锁合元件12’,它们对应于接触法兰38上的形锁合元件12。这些形锁合元件12’具有一个形状,该形状相应于形锁合元件12的梯形横截面(图3)。
在刀具14的安装状态中,形锁合元件12穿过形锁合元件12’及确定了刀具14相对驱动轴16的一个转动位置。在此,通过形锁合元件12,12’的布置的十二个对称部分适合于:确定刀具14相对驱动轴16的十二个不同的转动位置,它们各相对其相邻的转动位置差30°。每个转动位置相应于形锁合元件12与形锁合元件12’之间的一个不同的配置。
在固定区段44及在其上布置形锁合元件12’的所述圆的中心,刀具14具有一个圆孔,其直径为6mm及由此相应于固定螺钉42的杆的直径。
在安装期间操作者使设有弹性元件24的固定螺钉42穿过固定区段44的圆孔及将固定螺钉42拧入接触法兰38中的构造成盲孔的定心元件10中。固定螺钉42的头部48具有一个六角形凹槽,用于接收一个六角形改锥。
通过将固定螺钉42拧入定心元件10中,刀具14通过起压紧法兰作用的弹性元件24被向着接触法兰38的方向移动,直到刀具14与形锁合元件12接触为止。操作者现在可通过将刀具14转动来确定其相对驱动轴16的转动位置。在此,刀具14通过一个由弹性元件24产生的压紧力经由形锁合元件12的倒角自动地导向到十二个转动位置之一中,在该转动位置上刀具14可被固定。在此,刀具14的定心通过形锁合元件12,12’的彼此配合更加精确化,确切地说,尤其是通过形锁合元件12的径向向内的侧面靠触在形锁合元件12’的径向外边缘上。
如果形锁合元件12与形锁合元件12’形成配合,则操作者进一步拧紧固定螺钉42,直到刀具14通过弹性元件24被压紧在接触法兰38的接触面上为止。当达到固定螺钉42的给定力矩时,弹性元件24被闭锁,这对于操作者可通过转动固定螺钉42所需的转矩的突然上升而感觉到。然后弹性元件24产生出一个基本上由闭锁力给定的夹紧力,借助该力使刀具14无间隙地固定在接触法兰38的接触面上。
Claims (18)
1.一种装置,具有一个定心元件(10)及至少一个形锁合元件(12),用于将一个可轴向插套上的刀具(14)固定在手持式工具机(28)的一个可被振荡地驱动的驱动轴(16)上,其中,定心元件(10)被设置用于刀具(14)相对驱动轴(16)的定心及形锁合元件(12)被设置用于确定刀具(14)相对驱动轴(16)的转动位置,其中,形锁合元件(12)在径向上被设置在定心元件(10)之外,其特征在于:形锁合元件(12)具有至少一个倒角(46),用于支持推插过程。
2.根据权利要求1的装置,其特征在于:定心元件(10)具有一个圆形横截面。
3.根据权利要求1或2的装置,其特征在于:形锁合元件(12)被设置用于配合到一个凹空(12’)中。
4.根据权利要求1的装置,其特征在于:形锁合元件(12)被设置用于将刀具(14)固定在至少三个转动位置中。
5.根据权利要求4的装置,其特征在于:形锁合元件(12)被设置用于将刀具(14)固定在至少四个转动位置中。
6.根据权利要求5的装置,其特征在于:形锁合元件(12)被设置用于将刀具(14)固定在至少十二个转动位置中。
7.根据权利要求4-6中一项的装置,其特征在于:这些转动位置被均匀地分布在一个角度范围上。
8.根据权利要求7的装置,其特征在于:该角度范围为360°。
9.根据权利要求1或2的装置,其特征在于:与该形锁合元件(12)的一个位置对应的一个半径(18)大于定心元件(10)的半径(20)的两倍。
10.根据权利要求1的装置,其特征在于:形锁合元件(12)被销形地构成。
11.根据权利要求1或2的装置,其特征在于:设有多个相同形状的、均匀分布在围绕定心元件(10)的一个圆上的形锁合元件(12)。
12.根据权利要求1的装置,其特征在于:形锁合元件(12)具有至少一个基本上向着圆周方向的携动面(22)。
13.根据权利要求12的装置,其特征在于:所述携动面(22)是平的。
14.根据权利要求1的装置,其特征在于:设有一个弹性元件(24),用于产生一个作用在刀具(14)上的夹紧力。
15.根据权利要求14的装置,其特征在于:弹性元件(24)的闭锁力被配置给一个固定螺钉(42)的给定力矩。
16.根据权利要求1或2的装置,其特征在于:定心元件(10)的直径在4与8mm之间。
17.一种刀具(14),具有一个定心元件(10)及形锁合元件(12’),用于轴向插套及固定在手持式工具机(28)的一个可被振荡地驱动的驱动轴(16)上,其中,定心元件(10)被设置用于相对驱动轴(16)的定心及形锁合元件(12’)被设置用于确定相对驱动轴(16)的转动位置,其中,形锁合元件(12’)在径向上被设置在定心元件(10)之外,其特征在于:该刀具设置有十二个布置在一个圆周上的形锁合元件(12’),该形锁合元件(12’)被配置给驱动轴(16)的至少一个相关联的形锁合元件(12),其中,所述驱动轴的形锁合元件(12)具有至少一个用于支持推插过程的倒角,并且刀具(14)通过所述形锁合元件(12,12’)的共同作用经由所述形锁合元件(12)的倒角能自动地导向到十二个转动位置之一中。
18.根据权利要求17的刀具(14),其特征在于:该形锁合元件(12’)被构造成凹空。
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- 2004-10-19 DE DE200420021498 patent/DE202004021498U1/de not_active Expired - Lifetime
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2005
- 2005-08-23 ES ES09016052T patent/ES2425424T3/es active Active
- 2005-08-23 US US10/574,683 patent/US8151679B2/en active Active
- 2005-08-23 DE DE200550009050 patent/DE502005009050D1/de active Active
- 2005-08-23 EP EP09016052.4A patent/EP2172317B2/de active Active
- 2005-08-23 DE DE200520022105 patent/DE202005022105U1/de not_active Expired - Lifetime
- 2005-08-23 AT AT05777659T patent/ATE457857T1/de not_active IP Right Cessation
- 2005-08-23 EP EP20050777659 patent/EP1819490B1/de active Active
- 2005-08-23 CN CN2005800358538A patent/CN101043987B/zh active Active
- 2005-08-23 WO PCT/EP2005/054126 patent/WO2006042768A1/de active Application Filing
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2012
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2014
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Also Published As
Publication number | Publication date |
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DE502005009050D1 (de) | 2010-04-01 |
US20140123825A1 (en) | 2014-05-08 |
US20120144971A1 (en) | 2012-06-14 |
EP2172317B2 (de) | 2017-01-25 |
EP2172317A1 (de) | 2010-04-07 |
EP1819490A1 (de) | 2007-08-22 |
US8640580B2 (en) | 2014-02-04 |
DE102004050798A1 (de) | 2006-04-20 |
DE202005022105U1 (de) | 2013-09-26 |
EP1819490B1 (de) | 2010-02-17 |
ES2425424T3 (es) | 2013-10-15 |
US9272435B2 (en) | 2016-03-01 |
US8151679B2 (en) | 2012-04-10 |
ATE457857T1 (de) | 2010-03-15 |
US20080190259A1 (en) | 2008-08-14 |
CN101043987A (zh) | 2007-09-26 |
WO2006042768A1 (de) | 2006-04-27 |
DE202004021498U1 (de) | 2008-06-26 |
EP2172317B1 (de) | 2013-07-03 |
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