CN1964810B - 切削工具 - Google Patents
切削工具 Download PDFInfo
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- CN1964810B CN1964810B CN2005800112519A CN200580011251A CN1964810B CN 1964810 B CN1964810 B CN 1964810B CN 2005800112519 A CN2005800112519 A CN 2005800112519A CN 200580011251 A CN200580011251 A CN 200580011251A CN 1964810 B CN1964810 B CN 1964810B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/08—Disc-type cutters
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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
- B23B29/04—Tool holders for a single cutting tool
- B23B29/043—Tool holders for a single cutting tool with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/02—Fixation using an elastically deformable clamping member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/16—Fixation of inserts or cutting bits in the tool
- B23C2210/161—Elastically deformable clamping members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/48—Chip breakers
- B23C2210/486—Chip breaking grooves or depressions
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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
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
- Y10T407/1934—Rotary cutting tool including holder [i.e., head] having seat for inserted tool with separate means to fasten tool to holder
- Y10T407/1938—Wedge clamp element
- Y10T407/194—Resilient clamp jaw
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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
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
- Y10T407/2282—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder including tool holding clamp and clamp actuator
- Y10T407/2286—Resiliently biased clamp jaw
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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
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
- Y10T407/2282—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder including tool holding clamp and clamp actuator
- Y10T407/2286—Resiliently biased clamp jaw
- Y10T407/2288—Integral with 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
- Y10T407/00—Cutters, for shaping
- Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
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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
- Y10T407/00—Cutters, for shaping
- Y10T407/25—Cutters, for shaping including cut off tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Milling Processes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
一种切削嵌入件(14),它包括切削部分(24)和定位部分(26),该切削部分(24)包括形成于刮擦面(30)和离隙面(32)的交叉处的切削刃(28);上表面(34),下表面(36)和介于上、下表面(34,36)之间的周围侧表面,该周围侧表面包括相对的前、后表面(38,40)和在该前、后表面(38,40)之间延伸的相对侧表面(42);该离隙面(32)位于前表面(38)而刮擦面(30)位于上表面(34);该定位部分(26)从切削部分(24)向下延伸而远离上表面(34);该定位部分(26)包括相对的前、后定位表面(44,46),该后定位表面(46)位于该后表面(40)而前定位表面(44)位于该下表面(36);以及下定位表面(48),其位于该下表面(36)并与上表面(34)相对,而且在前表面(38)和前定位表面(44)之间延伸。以及一种带有这种切削嵌入件的切削工具(10,20)。
Description
技术领域
本发明涉及以下类型的切削工具,即其中切削嵌入件被弹性地以自保持方式夹持于嵌入件穴口中。
背景技术
通常,采用夹持切削嵌入件的弹性夹持机构的切削工具具有较薄的厚度。一般在0.5-12mm的范围内,且切削嵌入件被保持在嵌入件穴口中,该嵌入件穴口位于切削工具的上、下夹片(或夹爪)的夹持表面之间。比如在开槽和分离的切削操作时,切削工具为支架刀片(holder blade)形式。该支架刀片通常被夹持在保持刀片的块体中。该支架刀片通常具有适当设计的开口,在嵌入件孔穴附近以形成较窄的桥接部,能够使得支架刀片的夹片之一相对于另一个的弹性位移有限的程度。通常,下夹片为刚性的而上夹片是可弹性移动的。该开口可为孔或者狭缝,或者是终止于孔中的狭缝的形式。该类切削工具的实例披露于美国专利号3,785,021、美国专利号4,580,930和美国专利号5,892,924中。采用弹性嵌入件夹持机构的旋转狭缝切削工具披露于美国专利号4,417,833中。切割器本体为盘状并具有较薄的厚度,切削嵌入件孔穴定位成围绕在切割器本体的周边。因为带有支架刀片,旋转狭缝切削工具的嵌入件穴口具有两个夹片,通过由该夹持夹片的位移引起的弹性力而将嵌入件夹持在该两个夹片之间。
不管切削工具是支架刀片还是旋转的狭缝切削工具,通过制造嵌入件穴口获得夹片的位移,这样这些夹片的夹持表面的间距小于位于这些夹持表面之间的嵌入件的那部分的高度。因此,当将嵌入件放置于嵌入件穴口内时,夹持夹片保持在移位位置,该移位位置产生了弹性力,通过该弹性力,嵌入件被夹持就位。
众所周知,上述类型的切削工具存在的问题是切削嵌入件不是确实地紧固在嵌入件穴口内,因此在切削过程中可能移出。比如,这一点可在开槽操作过程中试图从工件退出支架刀片时出现。有时,可将切削嵌入件完全从支架刀片上拉出而嵌入到工件中。这一题对于带有旋转的狭缝切削工具来说尤为严重,其中,在离心力的作用下切削嵌入件甚至可从嵌入件穴口中飞出,尤其当高速作业时情况会更加危险。
本发明的目的是提供一种带有弹性夹持机构的切削工具,其中基本上可减少或者克服上述缺点。
发明内容
根据本发明,提供一种切削嵌入件,它包括:
切削部分和定位部分,该切削部分包括形成于刮擦面(或前刀面)和离隙面(或后刀面)的交叉处的切削刃;
上表面,下表面和介于上、下表面之间的周围侧表面,该周围侧表面包括:
相对的前、后表面和在该前、后表面之间延伸的相对侧表面;该离隙面位于前表面而刮擦面位于上表面;该定位部分从切削部分向下延伸而远离上表面;该定位部分包括相对的前、后定位表面,该后定位表面位于该后表面而前定位表面位于该下表面;以及
下定位表面,其位于该下表面并与上表面相对,而且在前表面和前定位表面之间延伸。
优选地,在切削嵌入件的侧视图中,切削部分比定位部分宽。
更优选地,前、后定位表面向下收拢。
如果期望,后表面是凹入的。
如果还期望,后表面可是凹入的V形状。
如果期望,下定位表面是凹入的。
如果还期望,下定位表面可是凹入的V形状。
典型地,刮擦面设有切屑形成沟槽。
如果期望,切削嵌入件可设有侧切削刃,该侧切削刃可形成于侧表面和刮擦面的交叉处。
本发明还提供一种切削工具,它包括嵌入件支架,在该嵌入件支架中,本发明切削嵌入件弹性地保持在嵌入件穴口中,嵌入件支架包括夹持部分,该夹持部分包括夹持夹片,该夹持夹片弹性地连接于基部夹片并与该基部夹片一起形成单个整体件,
该基部夹片具有邻接表面,且该夹持夹片具有夹持表面,该夹持表面与该邻接表面的下部相面对,该夹持夹片进一步设有嵌入件止动表面,该嵌入件止动表面通常横过夹持表面。以及
切削嵌入件保持在嵌入件穴口内,该基部夹片的邻接表面与切削嵌入件的后表面邻靠,夹持夹片的夹持表面与切削嵌入件的前定位表面邻靠,且夹持夹片的嵌入件止动表面与切削嵌入件的下定位表面邻靠。
如果期望,邻接表面是凸起的。
如果还期望,邻接表面是凸起的V形状。
整体上,通过基部凹入部将邻接表面分成上邻接表面和下邻接表面。
如果期望,嵌入件止动表面是凸起的。
如果还期望,嵌入件止动表面是凸起的V形状。
典型地,基部夹片通过凹入部连接于夹持夹片,并且通孔向后就位于基部夹片处用以容纳销键。
根据本发明的一个应用,切削工具是一种旋转的狭缝切削工具。
根据本发明的另一个应用,切削工具是一种开槽工具、分离工具或者车刀,且嵌入件支架是一种支架刀片。
附图说明
图1是本发明第一切削工具的透视立体图;
图2是本发明第二切削工具的透视立体图;
图3是本发明切削工具的切削部分的侧视图;
图4是本发明切削嵌入件的侧视图;
图5是图3所示的切削部分的侧视图,其中切削嵌入件已被移除;
图6是图3所示的切削部分的分解透视立体图;以及
图7是沿着图3中线VII~VII取的剖面图,该线通过嵌入件支架的夹持表面并且超过切削嵌入件的定位表面。
具体实施方式
首先请留意图1和图2,示出了本发明的两种切削工具。图1示出了用于例如开槽和分离的金属切削操作的第一切削工具10。该第一切削工具10包括呈矩形刀片状的嵌入件支架12,切削嵌入件14弹性地保持在嵌入件穴口16中。典型地,切削嵌入件14通过压力成型和烧结碳化物粉末而制成。图2表示了第二切削工具20,其用于旋转的狭缝金属切削操作。该第二切削工具20包括呈圆盘形的嵌入件支架22,切削嵌入件14弹性地保持在相同的嵌入件穴口16中,该嵌入件穴口16绕该盘的周边布置。切削工具10,20包括包含切削嵌入件14的切削部分18,嵌入件穴口16以及嵌入件穴口16的紧邻区。切削部分18在图3示出。应当注意,出现在整个说明书和权利要求书中的方向性用语,比如“前”、“后”、“上”和“下”等等,是为了便于区分各表面的相对于彼此的位置而引入的用语。这些用语是参照图3-5确定的;但是,其仅为了说明的目的而非试图限制权利要求书的范围。
以下将注意力放至图4。切削嵌入件14包括切削部分24和定位部分26。切削部分24包括切削刃(或切削边缘)28,该切削刃28形成于刮擦面(或前刀面)30和离隙面(或后刀面)32的交叉处。切削嵌入件14还包括上表面34,下表面36和上、下表面34,36之间的周边侧表面。该周边侧表面包括相对的前、后表面38,40和在该前、后表面38,40之间延伸的相对侧表面42。该离隙面32位于前表面38上而刮擦面30位于上表面34上。在前、后表面38,40之间界定出了第一距离W1。在远离上表面34的方向上,定位部分26从切削部分24向下延伸,并且该定位部分26包括向下收拢的相对的前、后定位表面44,46。在前、后定位表面44,46之间界定出了第二距离W2。尽管第一距离W1未必在整个切削部分24上保持恒定,并且尽管第二距离W2向下沿着定位部分26的长度递减,但是在切削嵌入件14的侧视图中,切削部分24比定位部分26宽。如附图所示,尤其如图3,4所示。换言之,第一距离W1大于第二距离W2。后定位表面46位于后表面40上,而前定位表面44位于该下表面36上。此外,下定位表面48位于与上表面34相对的下表面36,而且在前表面38和前定位表面44之间延伸。
参考图5,嵌入件支架12,22的夹持部50包括夹持夹片52,通过凹入部54,该夹持夹片52弹性地连接于基部夹片56,与该基部夹片56一起形成一单个整体件。基部夹片56具有临近嵌入件穴口16的邻接表面58。该邻接表面58被基部凹入部60分为沿着其上部分的上邻接表面62和沿着其下部分的下邻接表面64。夹持夹片52具有临近嵌入件穴口16的夹持表面66并通常面对基部夹片56的下邻接表面64。在夹持表面66和下邻接表面64之间界定出了第三距离W3。该第三距离W3向下递减。夹持夹片52还设有位于其上端的嵌入件止动表面68,该嵌入件止动表面68通常横过夹持表面66。基部夹片56的上、下邻接表面62,64,以及夹持夹片52的夹持表面66向下收拢。设有位于基部夹片56后面的通孔70用于容纳销键,以利于当用于结合凹入部54时将切削嵌入件14插入到嵌入件穴口16中,并且用于将该切削嵌入件14从嵌入件穴口16移除。
现在将注意力集中到图6,其中示出了切削嵌入件14和嵌入件支架12,22的附加特征。嵌入件支架12,22的嵌入件止动表面68可以是凸起的V形状,而切削嵌入件14的下定位表面48可以是相配接的凹入的V形状。类似地,嵌入件支架12,22的邻接表面58可以是凸起的V形状,而切削嵌入件14的后表面40可以是相配接的凹入的V形状。该相配接的凸起和凹入表面阻止切削嵌入件14相对于嵌入件支架12,22的横向移动。刮擦面30也可设切屑形成沟槽72。此外,切削嵌入件14也可设有侧切削刃(或切削边缘)74,其形成于侧表面42和刮擦面30的交叉处。
再参考图3,可看到,随着切削嵌入件14保持在嵌入件穴口16,基部夹片56的邻接表面62,64与切削嵌入件14的后表面40邻靠,夹持夹片52的夹持表面66与切削嵌入件14的前定位表面44邻靠,且夹持夹片52的嵌入件止动表面68与切削嵌入件14的下定位表面48邻靠。为避免两组凸起-凹入配合表面过度限制的布置,将夹持表面66选择为平面的,而将前定位表面44选择为凸起的(如图7所示)。宽度尺寸W2通常大于宽度尺寸W3,以使得当定位部分26定位于嵌入件穴口16中时,促使夹持夹片52离开基部夹片56,提高将定位部分26夹持于嵌入件穴口16中的弹性力。
在旋转的狭缝切削操作中,离心力F作用于切削嵌入件14。从图3可清楚地看出,夹持夹片52的夹持表面66对抗着力F,因此阻止切削嵌入件14从嵌入件穴口16中飞出。在执行开槽的操作时,在将切削工具10从工件中抽出的过程中,切削嵌入件14会与沟槽壁接触而增大了用于将切削嵌入件14从嵌入件穴口16中抽出的摩擦力F。但是,夹持夹片52的夹持表面66的出现阻止将切削嵌入件14抽出。
尽管本发明已经在某种程度上得以具体描述,但是应当理解,在不脱离如权利要求书所主张的本发明范围的情况下,可进行各种变更和修改。
Claims (9)
1.一种切削工具(10,20),它包括嵌入件支架(12,22),其中,切削嵌入件(14)弹性地保持在嵌入件穴口(16)中;
所述切削嵌入件(14)包括切削部分(24)和定位部分(26),所述切削部分(24)包括形成于刮擦面(30)和离隙面(32)的交叉处的切削刃(28);上表面(34),下表面(36)和介于上、下表面(34,36)之间的周围侧表面,所述周围侧表面包括相对的前、后表面(38,40)和在所述前、后表面(38,40)之间延伸的相对侧表面(42);所述离隙面(32)位于所述前表面(38)而所述刮擦面(30)位于所述上表面(34);所述定位部分(26)从所述切削部分(24)向下延伸而远离所述上表面(34);所述定位部分(26)包括相对的前、后定位表面(44,46),所述后定位表面(46)位于所述后表面(40)而所述前定位表面(44)位于所述下表面(36);以及下定位表面(48),其位于所述下表面(36)并与所述上表面(34)相对,而且在所述前表面(38)和所述前定位表面(44)之间延伸;
所述嵌入件支架(12,22)包括夹持部分(50),所述夹持部分(50)包括夹持夹片(52),所述夹持夹片(52)弹性地连接于基部夹片(56)并与所述基部夹片(56)一起形成单个整体件,所述基部夹片(56)具有邻接表面(58),而所述夹持夹片(52)具有夹持表面(66),所述夹持表面(66)与所述邻接表面(58)的下部相面对,所述夹持夹片(52)还设有嵌入件止动表面(68),所述嵌入件止动表面(68)通常横过所述夹持表面(66);并且
所述切削嵌入件(14)保持在所述嵌入件穴口(16)内,所述基部夹片(56)的所述邻接表面(58)与所述切削嵌入件(14)的所述后表面(40)邻靠,所述夹持夹片(52)的所述夹持表面(66)与所述切削嵌入件(14)的所述前定位表面(44)邻靠,且所述夹持夹片(52)的所述嵌入件止动表面(68)与所述切削嵌入件(14)的所述下定位表面(48)邻靠。
2.根据权利要求1所述的切削工具(10,20),其特征在于,所述邻接表面(58)是凸起的。
3.根据权利要求2所述的切削工具(10,20),其特征在于,所述邻接表面(58)是凸起的V形状。
4.根据权利要求1所述的切削工具(10,20),其特征在于,通过基部凹入部(60)将所述邻接表面(58)分成上邻接表面(62)和下邻接表面(64)。
5.根据权利要求1所述的切削工具(10,20),其特征在于,所述嵌入件止动表面(68)是凸起的。
6.根据权利要求5所述的切削工具(10,20),其特征在于,所述嵌入件止动表面(68)是凸起的V形状。
7.根据权利要求1所述的切削工具(10,20),其特征在于,所述基部夹片(56)通过凹入部(54)连接于所述夹持夹片(52),并且通孔(70)向后就位于所述基部夹片(56)处用以容纳销键。
8.根据权利要求1所述的切削工具(20),其特征在于,所述切削工具(20)是旋转的狭缝切削工具。
9.根据权利要求1所述的切削工具(10),其特征在于,所述切削工具(10)是开槽工具,或分离工具,或车刀,并且嵌入件支架(12)是支架刀片。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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IL161373A IL161373A (en) | 2004-04-14 | 2004-04-14 | Cutting tool and cutting tool for it |
IL161373 | 2004-04-14 | ||
PCT/IL2005/000307 WO2005099949A1 (en) | 2004-04-14 | 2005-03-17 | Cutting tool and cutting insert therefor |
Publications (2)
Publication Number | Publication Date |
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CN1964810A CN1964810A (zh) | 2007-05-16 |
CN1964810B true CN1964810B (zh) | 2010-05-26 |
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CN2005800112519A Active CN1964810B (zh) | 2004-04-14 | 2005-03-17 | 切削工具 |
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US (2) | US7163361B2 (zh) |
EP (2) | EP1737596B1 (zh) |
JP (1) | JP4717063B2 (zh) |
KR (1) | KR100960484B1 (zh) |
CN (1) | CN1964810B (zh) |
AT (2) | ATE417689T1 (zh) |
AU (1) | AU2005232973B2 (zh) |
BG (1) | BG65885B1 (zh) |
BR (1) | BRPI0509850B1 (zh) |
CA (1) | CA2562579C (zh) |
DE (2) | DE602005026062D1 (zh) |
DK (1) | DK1737596T3 (zh) |
ES (2) | ES2359275T3 (zh) |
IL (1) | IL161373A (zh) |
MX (1) | MXPA06011918A (zh) |
NO (1) | NO20065185L (zh) |
NZ (1) | NZ550697A (zh) |
PL (2) | PL1737596T3 (zh) |
PT (2) | PT1737596E (zh) |
RU (1) | RU2365470C2 (zh) |
SI (1) | SI1737596T1 (zh) |
WO (1) | WO2005099949A1 (zh) |
ZA (1) | ZA200608518B (zh) |
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