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公开(公告)号：EP2197612B1
公开(公告)日：2012-02-08
申请号：EP08786180.3
申请日：2008-07-16
摘要： The invention relates to a drilling tool with a base (32), having a central axis of rotation (24), and a drill bit (34), detachably connected to the base (32). The drill bit (34) has a coupling part (96), which can be coupled with a coupling receptacle (94) on the face of the base (32) and has at least two convexly curved centring portions (40), which are arranged such that they are distributed over the circumference and engage with an exact fit in complementary concavely curved centring portions (42) of the coupling receptacle (94). The coupling part (96) has a complementary driver stop (46), meshing with a rotary driver (44) of the coupling receptacle (94). It is claimed as novel that the centring portions (40, 42) of the coupling part (96) and/or of the coupling receptacle (94) have clamping surfaces (48, 50), which run onto each other in the manner of a rotary wedge until the driver stop (46) and the rotary driver (44) come up against each other counter to a predetermined direction of rotation.
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公开(公告)号：EP2197612A1
公开(公告)日：2010-06-23
申请号：EP08786180.3
申请日：2008-07-16
摘要： The invention relates to a drilling tool with a base (32), having a central axis of rotation (24), and a drill bit (34), detachably connected to the base (32). The drill bit (34) has a coupling part (96), which can be coupled with a coupling receptacle (94) on the face of the base (32) and has at least two convexly curved centring portions (40), which are arranged such that they are distributed over the circumference and engage with an exact fit in complementary concavely curved centring portions (42) of the coupling receptacle (94). The coupling part (96) has a complementary driver stop (46), meshing with a rotary driver (44) of the coupling receptacle (94). It is claimed as novel that the centring portions (40, 42) of the coupling part (96) and/or of the coupling receptacle (94) have clamping surfaces (48, 50), which run onto each other in the manner of a rotary wedge until the driver stop (46) and the rotary driver (44) come up against each other counter to a predetermined direction of rotation.
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公开(公告)号：EP2185312B1
公开(公告)日：2015-09-09
申请号：EP08786556.4
申请日：2008-07-29
申请人： Komet Group GmbH
发明人： SCHNEIDER, Rico , STOLZ, Gerhard
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公开(公告)号：EP2197612B2
公开(公告)日：2020-02-12
申请号：EP08786180.3
申请日：2008-07-16
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公开(公告)号：EP2185312A1
公开(公告)日：2010-05-19
申请号：EP08786556.4
申请日：2008-07-29
申请人： Komet Group GmbH
发明人： SCHNEIDER, Rico , STOLZ, Gerhard
摘要： The invention relates to a drilling tool for machine tools comprising a drill body and a cutting head arranged on the front face of the drill body. The drill body has at least two chip flutes, which are delimited at their flanks by ribs and at least one of which is spirally curved. Arranged in the ribs of the drill body are coolant channels, which have an outlet opening at the end of the drill body on the cutting head side. A special feature is that the outlet openings are arranged within each one of the chip flutes and communicate with one of the coolant channels arranged in the ribs by way of a straight channel endpiece.
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