CN100531977C - 镗刀 - Google Patents

镗刀 Download PDF

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Publication number
CN100531977C
CN100531977C CNB2006100764063A CN200610076406A CN100531977C CN 100531977 C CN100531977 C CN 100531977C CN B2006100764063 A CNB2006100764063 A CN B2006100764063A CN 200610076406 A CN200610076406 A CN 200610076406A CN 100531977 C CN100531977 C CN 100531977C
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cutter
knife rest
boring
differential shaft
regulating part
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CN1853833A (zh
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鲁道夫·施塔德尔曼
拉尔夫·施塔德尔曼
恩斯特·汉吉
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Heinz Kaiser AG
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Heinz Kaiser AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B29/00Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03Boring heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B29/00Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03Boring heads
    • B23B29/034Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03407Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of screws and nuts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B29/00Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03Boring heads
    • B23B29/034Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2250/00Compensating adverse effects during turning, boring or drilling
    • B23B2250/04Balancing rotating components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2260/00Details of constructional elements
    • B23B2260/056Differential screw threads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2260/00Details of constructional elements
    • B23B2260/088Indication scales
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/65Means to drive tool
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/65Means to drive tool
    • Y10T408/675Means to drive tool including means to move Tool along tool-axis
    • Y10T408/6764Laterally adjustable Tool
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/83Tool-support with means to move Tool relative to tool-support
    • Y10T408/85Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858Moving means including wedge, screw or cam
    • Y10T408/8598Screw extending perpendicular to tool-axis
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/83Tool-support with means to move Tool relative to tool-support
    • Y10T408/85Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/858Moving means including wedge, screw or cam
    • Y10T408/8598Screw extending perpendicular to tool-axis
    • Y10T408/85995Screw extending perpendicular to tool-axis with tool-holding clamp and clamp actuator
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/86Tool-support with means to permit positioning of the Tool relative to support
    • Y10T408/885Tool-support with means to permit positioning of the Tool relative to support including tool-holding clamp and clamp actuator

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

Abstract

镗刀包括一个刀体(2),该刀体(2)上安装有一个刀架(10),该刀架(2)可径向调节。调节件(42)用于设定镗孔直径。驱动机构将调节件(42)的转动转换成刀架(10)的平移。该驱动机构包括差动轴(13),差动轴(13)将刻度盘(26)的转动转换成刀架(10)的平移,以精调镗孔直径。差动轴(13)安装在刀架(10)的孔(51)中,并且垂直于转动轴线(A)延伸。

Description

镗刀
技术领域
本发明涉及一种镗刀,该镗刀有一个刀体,在该刀体上安装了一个可调节的刀架,该镗刀还有一个可转动的调节件,利用该调节件,刀架可通过一个用于调节镗孔直径的驱动机构径向移动,该驱动机构将调节件的转动转换为刀架的平移。
背景技术
所述类型的镗刀很早之前就是已知的。例如,它们特别用来完成精密孔的最后加工。在刀体上,该工具通常是可分度式刀头夹持器(indexable-insert holder),该夹持器可释放地安装在刀架上,用于粗调。驱动机构用来在几微米范围内精调外径。
所述类型的镗刀已经公开在DE-A-43 32 520中。在轴向上,该镗刀带有圆柱形的孔,孔内安装了一个小螺距螺纹的调节螺杆。该调节螺杆连接到一个调节轮上。该调节轮和调节螺杆同轴设置。通过在调节轮上驱动该调节螺杆,可在轴向上调节一个平移件。在该平移件上设置了凹口,该凹口与纵轴有相对较小的角度。借助于该凹口,纵向调节转换成垂直调节,并因此转换成镗床主头夹持器的平移。利用平移件或所述凹口,能够获得更为准确和精密的调节。然而,这里所提供的用于将调节件的转动转换为镗床主头夹持器的平移的驱动机构所需的整体长度较大。此外,这种镗刀的结构相对复杂。
发明内容
本发明的目的是提供一种所述类型的镗刀,其中该工具能以较简单且节省空间的方式实现。
在通用的镗刀中,该目的如此实现:驱动机构是一个差动轴,该轴将调节件的转动转换为刀架的平移,用来精密调节镗孔直径。
在通用的镗刀中,驱动机构能由几个单独的部件以紧凑的结构和非常经济的方式来实现。由于螺距的相应差值,差动轴允许很高的传动比,同时游隙很小。因此,在根据本发明的镗孔中,能在调节件上有一个标尺,在该标尺上的两条线之间的距离对应于一微米的位移。
根据本发明的一种改进,提供一种安装在刀架上的孔中的差动轴。在此情形下,当孔和差动轴垂直于刀架的转动轴线而运行时,可有一种特别短的结构。相对短的结构使得稳定性高。
根据本发明的一种改进,提供一种带有刻度盘的调节件,该刻度盘设置在刀体的侧面。这使得可以简单精确地调节,例如通过六边形扳手。
根据本发明的一种改进,提供一种带驱动轴的调节件,该驱动轴纵向可移动地连接到差动轴。
在此情形下,驱动轴通过一个安装盘安装到一个螺母上,该螺母可操纵地连接到差动轴。该螺母在此情形下稳固地连接到刀体。当驱动轴旋转时,差动轴旋转且刀架相应于螺距的差而径向移动。
可根据附带的权利要求、下面的说明书和附图得到其他有利的特征。
附图说明
根据本发明的镗刀的示例性实施方式在下文中参照附图进行详细描述,其中:
图1示出了根据本发明的镗刀沿图2的I-I线的剖视图;
图2示出了该镗刀沿图1的轴向的视图;
图3示出了该镗刀沿图2的III-III线的剖视图;
图4示出了该镗刀的侧视图,并且
图5示出了根据本发明的镗刀的另一个侧视图;
具体实施方式
图1示出了一个镗床主头1,包括一个刀体2,刀体2具有一个径向孔8,其中刀架10以一种可以径向移动一定限度的方式安装在孔8上。如图所示,孔8是一个连续阶梯状的孔。在与孔8有一定距离的地方,刀体2带有另一个孔25,其与孔8平行并且其中配重29能够借助轴31而移动以补偿不平衡性。两个孔8和25都与镗床主头1的转动轴线A成直角。而且,刀体2有一柄部23,镗床主头1能由该柄部23连接到一个柄(未示出)或其它部位上,表面24通过至少一个夹紧螺钉(这里未示出)压住该柄或其它部位。
根据图3,刀架10设置在凹槽37下方,凹槽37结合到刀体2的端面36中,且一个可分度式刀头夹持器19安装到该凹槽中,其安装方式使得它在径向上可移动有限的程度。可分度式刀头夹持器19能由夹紧螺钉21夹紧在刀架10的正确位置上。
如图2所示,夹紧螺钉21穿过可分度式刀头夹持器19的长孔40。当夹紧螺钉21松开时,可分度式刀头夹持器能在长孔40的区域内径向调节。外径的粗调可以通过此类径向调节实现。为此,标尺39设置在刀体2的端面36上。
本身已知的可分度式刀头20设置在可分度式刀头夹持器19上。该可分度式刀头20的切削端到转动轴线A的距离形成了镗孔半径。根据图2,润滑嘴34和冷却水出口44以本身已知的方式地设置在端面36内。冷却水在柄部23进入并经由图3所示的通道45供应到冷却水出口44。
设置驱动装置41用来微调镗孔直径,该驱动装置41将调节件42的旋转运动转变成刀架10的径向移动并从而转变成可分度式刀头夹持器19的径向移动。调节件42带有驱动轴4,驱动轴4的正视图在图1中示出,驱动轴4利用安装盘5可旋转地安装在螺母6上。为了安装驱动轴4,所述驱动轴带有轴环46,轴环46通过盘簧47压靠在安装盘5上。而且,驱动轴4带有一个轮廓为多边形的杆48,该杆48与差动轴13的相应的多边形孔16相接合。螺母6和安装盘5稳固地连接到刀体2上。螺母6借助于密封圈7由刀架10密封起来。驱动轴4能绕着轮廓为多边形的杆48的轴线旋转,但是其到转动轴线A的距离始终保持。为了将安装盘5紧固到刀体2,所述安装盘5带有外螺纹49,外螺纹49可以旋进孔8相应的内螺纹中。
旋到驱动轴4上的是刻度盘3,刻度盘3带有直线标度50和六边形孔(这里未示出),该六边形孔作为一个工具——特别是六边形扳手——的应用点。盘簧22设置在刻度盘3和安装盘5之间。当刻度盘3顺时针或逆时针转动时,驱动轴4随其无游隙地转动。
刀架10带有纵向孔51,该孔51中旋入一个螺套11并且稳固地连接到刀架10,例如通过胶合。该螺套带有内螺纹12,内螺纹12内旋入了带有外螺纹14的差动轴13。纵向孔51由旋入密封塞17封住。差动轴13还有一外螺纹15,外螺纹15上旋有带有内螺纹9的螺母6。两个螺纹14和15具有相同的螺旋方向和不同的螺距。通过转动刻度盘3,差动轴13能以相同方向转动,其中差动轴13在孔51内根据螺距15而纵向平移。由于螺套11现在稳固地连接到刀架10上,差动轴13在螺纹14上的旋转运动促使刀架10在孔8内平移。操作时,刀架10逆着差动轴13的移动方向移动,其移动距离为螺距14和15的差值。例如,外螺纹14的螺距是0.25mm而螺纹15的螺距是0.275mm。螺距之间的差值为0.025mm。例如,刻度盘3转动过一个刻度线的距离相当于刀头夹持器19在直径方向上移动1微米。由差动轴13和相应螺纹14和15或螺母6和螺套11形成的机构的特征在于,几个部件形成简单结构,且大体上没有游隙。
在设定外径后,镗床主头1一般需要平衡。为此目的,设置有另外的调节件43,该调节件43带有刻度盘26,该刻度盘26同样地例如使用六角形扳手转动。刻度盘26形成了其外螺纹32螺距相对较粗的轴31,该外螺纹32旋到配重29的内螺纹33中。为了安装轴31,容纳有螺母27的安装盘28旋入到孔25中。当轴31转动时,配重29移到图1中的右侧或左侧。孔25由图1左侧的密封塞30封住。平衡重量29可由图4中所示的夹紧螺钉35固定。
下文将更详细地解释镗孔直径的调节过程。
为了设定希望的镗孔直径,首先通过松开夹紧螺钉21而松开可分度式刀头夹持器19。现在,可分度式刀头夹持器19的径向粗调借助于标尺39手动实现。夹紧螺钉21接着使用六角形扳手紧固,从而可分度式刀头夹持器19固定到刀架10。六角形扳手或合适的工具或手轮(这里未示出)现在应用到刻度盘3上,并且转动刻度盘以精调镗孔直径。在此过程中,刀架10与可分度式刀头夹持器19一起径向移动。在此情形下,直线标度50标示了可分度式刀头夹持器19移动的值。这里,两个刻度线之间的距离例如相当于直径上的1微米。若已经设定了所希望的镗孔直径,刀架10通过紧固夹紧螺钉18而固定到刀体2上。
为了平衡镗床主头1,通过转动刻度盘26将配重29移动到图1中的左侧或右侧。从而,配重29不转动并且仅在孔25的纵向移动,根据图3,设置一个引导配重29的键38。密封塞30形成了调节件43的配重。由此彼此独立地设定了镗孔直径和对不平衡的补偿。配重29的设定位置由夹紧螺钉35固定。调节件42和43设置在镗床主头1的相同侧并且一个在另一个的上方,这便于调节。
标号列表
1.镗床主头
2.刀体
3.刻度盘
4.驱动轴
5.安装盘
6.螺母
7.密封圈
8.孔
9.内螺纹
10.刀架
11.螺套
12.内螺纹
13.差动轴
14.外螺纹(轴)
15.外螺纹(轴)
16.多边形孔
17.密封塞
18.夹紧螺钉
19.可分度式刀头夹持器
20.可分度式刀头
21.夹紧螺钉
22.盘簧
23.柄部
24.表面
25.孔
26.刻度盘
27.螺母
28.安装盘
29.配重
30.密封塞
31.轴
32.螺纹
33.螺纹孔
34.润滑嘴
35.夹紧螺钉
36.端面
37.凹槽
38.扳手
39.标尺
40.长孔
41.驱动装置
42.调节件
43.调节件
44.冷却水出口
45.冷却水通道
46.轴环
47.盘簧
48.轮廓为多边形的杆
49.外螺纹
50.直线标度
51.孔
A.转动轴线

Claims (9)

1.一种镗刀,包括:
一个刀体(2),其具有端面(36)以及设于所述端面的凹槽(37);
一个刀架(10),其在所述凹槽的下方安装于所述刀体(2)中;
设置在所述凹槽中的可分度式刀头夹持器(19),其中,所述可分度式刀头夹持器利用螺钉以可拆卸方式联接至所述刀架,并且所述可分度式刀头夹持器用于粗调所述镗刀的镗孔直径;
一个可转动的调节件(42),其设置在所述刀体(2)上用于横向地移动所述刀架(10);以及
用于设定所述镗孔直径的驱动机构,所述驱动机构将所述调节件(42)的转动转换成所述刀架(10)的平移,并且所述驱动机构包括差动轴(13),该差动轴(13)将所述调节件(42)的转动转换成所述刀架(10)的精细平移;
其中,
所述调节件(42)带有连接到所述差动轴(13)的驱动轴(4),并且所述驱动轴(4)与所述差动轴(13)不能绕彼此转动,并且所述驱动轴(4)带有轮廓为多边形的杆(48),该杆(48)接合到所述差动轴(13)的多边形孔(16)中。
2.如权利要求1所述的镗刀,其中所述差动轴(13)安装在所述刀架(10)的孔(51)中。
3.如权利要求2所述的镗刀,其中所述孔(51)和所述差动轴(13)垂直于镗床主头的转动轴线(A)延伸。
4.如权利要求1-3中的任一项所述的镗刀,其中所述调节件(42)带有刻度盘(3),该刻度盘(3)设置在所述刀体(2)的侧部。
5.如权利要求1所述的镗刀,其中所述差动轴(13)带有两个外螺纹(14、15),其中一个外螺纹(14)可操纵地连接到所述刀架(10),而另一个外螺纹(15)可操纵地连接到所述刀体(2)上。
6.如权利要求1所述的镗刀,其中所述差动轴(13)通过螺母(6)可操纵地稳固地连接到所述刀体(2)上。
7.如权利要求1所述的镗刀,其特征在于所述差动轴(13)旋到螺套(11)中,该螺套(11)稳固地连接到刀架(10)上。
8.如权利要求1所述的镗刀,其中,在刀体(2)内径向可移动地安装有一个配重(29),并且所述配重(29)可通过另一个调节件(43)径向调节。
9.如权利要求8所述的镗刀,其中,所述配重(29)设置在一个横向孔(25)中,该横向孔(25)平行于其中安装有刀架(10)的另一横向孔(8)。
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TWI357364B (en) 2012-02-01
EP1716950A2 (de) 2006-11-02
JP2006305723A (ja) 2006-11-09
TW200706283A (en) 2007-02-16
US20060239787A1 (en) 2006-10-26
KR101212052B1 (ko) 2012-12-13
EP1716950B1 (de) 2011-09-21
EP1716950A3 (de) 2010-07-07
KR20060112247A (ko) 2006-10-31
US7585139B2 (en) 2009-09-08

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