公开(公告)号：EP2152455A1

公开(公告)日：2010-02-17

申请号：EP08707520.6

申请日：2008-02-02

申请人： Kennametal Inc.

发明人： HARTLÖHNER, Rudi ,  KAUFMANN, Igor

IPC分类号： B23B27/16 ,  B23C5/22

CPC分类号： B23B27/1618 ,  B23B2200/085 ,  B23B2200/087 ,  B23B2200/163 ,  B23B2200/201 ,  B23B2200/202 ,  B23B2200/204 ,  B23B2200/245 ,  B23B2200/3681 ,  B23B2200/369 ,  B23B2205/12 ,  B23C5/2217 ,  B23C2200/367 ,  Y10T407/2272 ,  Y10T407/23 ,  Y10T407/235

摘要： The invention relates to a rotatable and reversible cutting attachment (1) cutting eight ways and comprising two opposing, essentially quadratic base surfaces (2) which can be mutually rotated about a central axis (A1) extending perpendicularly to said surfaces, and four identical lateral surfaces (3). A main cutter is formed between each base surface (2) and each lateral surface (3), extending only over part of the length of the lateral surface (3). Each lateral surface (3) comprises two diagonally opposed circular or curved corner edges (5) forming a secondary cutter (6) adjacent to each main cutter (4). Each lateral surface also comprises two chip cavities (7) which are set in the lateral surface (3) and extend from each corner edge (5) along the main cutter associated with the edge, up to a rear end of the chip cavity (7d).

摘要翻译： 本发明涉及一种具有两个相对的基本上正方形的基面的八刃可旋转和可逆切削刀片，它们围绕垂直于所述底座表面行进的中心轴线彼此扭转，并具有四个相同的侧面。 在每个基面和每个侧表面之间形成主唇缘，并且仅在侧表面的一部分长度上延伸。 每个侧表面具有两个具有圆形或弯曲设计的对角相对的拐角边缘，并且形成邻近相应主唇缘的副唇缘。 此外，每个侧表面具有两个芯片袋，其被拉入侧表面，并且从相应的角边缘开始沿着分配给所述角边缘的主唇延伸到后芯片袋端部。

公开(公告)号：EP2144724B1

公开(公告)日：2011-05-11

申请号：EP08707521.4

申请日：2008-02-02

申请人： Kennametal Inc.

发明人： HARTLÖHNER, Rudi ,  KAUFMANN, Igor

IPC分类号： B23B27/16

CPC分类号： B23B27/1618 ,  B23B2200/085 ,  B23B2200/087 ,  B23B2200/163 ,  B23B2200/201 ,  B23B2200/202 ,  B23B2200/204 ,  B23B2200/245 ,  B23B2200/3681 ,  B23B2200/369 ,  B23B2205/12 ,  B23C5/2217 ,  B23C2200/367 ,  Y10T407/2274 ,  Y10T407/23 ,  Y10T407/235

摘要： The invention relates to a rotatable and reversible cutting attachment (1) cutting eight ways and comprising two opposing, essentially quadratic base surfaces (2) which can be mutually rotated about a central axis (A1) extending perpendicularly to said surfaces, and four identical lateral surfaces (3). A main cutter is formed between each base surface (2) and each lateral surface (3). A bearing surface (8) is formed between two chip steps (7) extending along the associated main cutter (4) of the respective lateral surface (3), said bearing surface extending symmetrically over the step ends (7d) of the adjacent chip steps (7) and transversally to the main cutter (4), up to same.

公开(公告)号：EP2101943A1

公开(公告)日：2009-09-23

申请号：EP07818867.9

申请日：2007-10-10

申请人： Kennametal Inc.

发明人： KAUFMANN, Igor

IPC分类号： B23B27/04 ,  B23B29/04

CPC分类号： B23B29/043 ,  B23B27/04 ,  B23B2205/02 ,  B23B2205/045 ,  B23B2205/08 ,  Y10T407/2282 ,  Y10T407/2288 ,  Y10T407/23 ,  Y10T407/25

摘要： In order to enable easy replaceability of a cutting element (14), the invention provides that in a tool holder (2), particularly for a burring tool, the cutting element (14) is held by means of a clamping claw (11) and a tightening screw (24) in a cutting element receptacle (8) in a clamping manner. The tightening screw (24) extends along a center axis (32), which is oriented at a tensioning angle (α) in relation to a holder longitudinal axis (6). The tensioning angle (α) is less than 45°, and particularly less than 30°. In this manner, easy front face accessibility to the tightening screw (24) is ensured, thus enabling easy replacement of the cutting element (14).

公开(公告)号：EP2152455B1

公开(公告)日：2018-04-11

申请号：EP08707520.6

申请日：2008-02-02

申请人： KENNAMETAL INC.

发明人： HARTLÖHNER, Rudi ,  KAUFMANN, Igor

IPC分类号： B23B27/16 ,  B23C5/22

CPC分类号： B23B27/1618 ,  B23B2200/085 ,  B23B2200/087 ,  B23B2200/163 ,  B23B2200/201 ,  B23B2200/202 ,  B23B2200/204 ,  B23B2200/245 ,  B23B2200/3681 ,  B23B2200/369 ,  B23B2205/12 ,  B23C5/2217 ,  B23C2200/367 ,  Y10T407/2272 ,  Y10T407/23 ,  Y10T407/235

公开(公告)号：EP2101943B1

公开(公告)日：2010-08-11

申请号：EP07818867.9

申请日：2007-10-10

申请人： Kennametal Inc.

发明人： KAUFMANN, Igor

IPC分类号： B23B27/04 ,  B23B29/04

CPC分类号： B23B29/043 ,  B23B27/04 ,  B23B2205/02 ,  B23B2205/045 ,  B23B2205/08 ,  Y10T407/2282 ,  Y10T407/2288 ,  Y10T407/23 ,  Y10T407/25

摘要： In order to enable easy replaceability of a cutting element (14), the invention provides that in a tool holder (2), particularly for a burring tool, the cutting element (14) is held by means of a clamping claw (11) and a tightening screw (24) in a cutting element receptacle (8) in a clamping manner. The tightening screw (24) extends along a center axis (32), which is oriented at a tensioning angle (α) in relation to a holder longitudinal axis (6). The tensioning angle (α) is less than 45°, and particularly less than 30°. In this manner, easy front face accessibility to the tightening screw (24) is ensured, thus enabling easy replacement of the cutting element (14).

公开(公告)号：EP2144724A1

公开(公告)日：2010-01-20

申请号：EP08707521.4

申请日：2008-02-02

申请人： Kennametal Inc.

发明人： HARTLÖHNER, Rudi ,  KAUFMANN, Igor

IPC分类号： B23B27/16

CPC分类号： B23B27/1618 ,  B23B2200/085 ,  B23B2200/087 ,  B23B2200/163 ,  B23B2200/201 ,  B23B2200/202 ,  B23B2200/204 ,  B23B2200/245 ,  B23B2200/3681 ,  B23B2200/369 ,  B23B2205/12 ,  B23C5/2217 ,  B23C2200/367 ,  Y10T407/2274 ,  Y10T407/23 ,  Y10T407/235

摘要： The invention relates to a rotatable and reversible cutting attachment (1) cutting eight ways and comprising two opposing, essentially quadratic base surfaces (2) which can be mutually rotated about a central axis (A1) extending perpendicularly to said surfaces, and four identical lateral surfaces (3). A main cutter is formed between each base surface (2) and each lateral surface (3). A bearing surface (8) is formed between two chip steps (7) extending along the associated main cutter (4) of the respective lateral surface (3), said bearing surface extending symmetrically over the step ends (7d) of the adjacent chip steps (7) and transversally to the main cutter (4), up to same.