公开(公告)号：WO2003070408A1

公开(公告)日：2003-08-28

申请号：PCT/EP2003/001526

申请日：2003-02-15

Applicant: KENNAMETAL INC. ,  BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter ,  SCHWÄGERL, Jürgen ,  RUY FROTA DE SOUZA, Filho ,  SHULZ, Michael, D. ,  McCOMICK, Michael, R

Inventor： BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter ,  SCHWÄGERL, Jürgen ,  RUY FROTA DE SOUZA, Filho ,  SHULZ, Michael, D. ,  McCOMICK, Michael, R

IPC: B23B51/02

CPC classification number: B23B51/00 ,  B23B51/02 ,  B23B2205/02 ,  B23B2251/02 ,  B23B2251/50 ,  B23C5/109 ,  B23D77/025 ,  B23D2277/02 ,  Y10S408/713 ,  Y10T408/892 ,  Y10T408/907 ,  Y10T408/909 ,  Y10T408/9095 ,  Y10T408/9097 ,  Y10T408/9098

Abstract: Ein Rundlaufschneidwerkzeug (3) ist zusammengesetzt aus einem Werkzeugschaft (2) mit mindestens einer Spannut (5) und einem auswechselbaren Schneideinsatz (1), wo­bei sich an der Schaftspitze (4) sowie in der Wand der Spannut (5) eine Ausnehmung (6) zur Aufnahme des Schneideinsatzes (1) befindet, die schaftseitig durch einen Rand (7) begrenzt ist, gegen den die schaftseitige Schmalseite (12) des Schneideinsatzes (1) anliegt. Der Schneideinsatz (1) weist einen Befestigungszapfen (15) zur Aufnahme in einer zur Werkzeugachse (A) konzentrischen Aufnahmeöffnung (16) des Werkzeug­schaftes (2) auf. Der Werkzeugschaft (2) weist an dessen Umfang einen Schenkel (9) mit einer Anlagefläche (8) auf, die relativ zur Werkzeugachse (A) schräg gestellt ist und mit einer ebenso schräg gestellten Anlagefläche (10) an einem Flügel (11) des Schnei­deinsatzes (1) korrespondiert, wobei die Orientierung der Schrägstellung der Anlageflä­chen (8, 10) der Werkzeugdrehrichtung (D) entspricht. Durch die Schrägstellung der Anlagefläche (8, 10) wird eine Axialkraft erzeugt, die den Schneideinsatz (1) am Werk­zeugschaft (2) hält.

Abstract translation: 一种旋转切削工具3与至少一条凹槽5和一个可更换的切削刀片1中，其特征在于，凹部6中的槽5的壁位于轴尖端4，以及用于接收切削刀片1，其由一个余量7限定柄部侧构成的工具柄2的 是针对其切削的杆侧的窄侧12插入1被应用。 切削刀片1具有用于接收在一个同心于工具轴线的工具刀柄的接收开口16的紧固销15 2 工具柄2在其圆周上的腿9的支承表面8，其相对于工具轴线A倾斜在机翼的切削刀片1的11中设定与对应于一个同样倾斜的支承面10，其中，所述接触表面8的倾斜的定向， 10刀具旋转方向D对应于。 由于接触面8，10的倾斜时，产生的轴向力，其保持切削刀片1工具刀柄2

公开(公告)号：WO2007006361A1

公开(公告)日：2007-01-18

申请号：PCT/EP2006/004646

申请日：2006-05-17

Applicant: KENNAMETAL INC. ,  MÜHLFRIEDEL, Dieter

Inventor： MÜHLFRIEDEL, Dieter

IPC: B23F21/22 ,  B23C5/22

CPC classification number: B23F21/226 ,  Y10T407/1735

Abstract: Der Messerkopf (2) umfasst einen scheibenförmigen Messerträger (4) sowie eine Mehrzahl an einen Messerschaft (20) aufweisenden Stabmessern (6). Der scheibenförmige Messerträger (4) weist eine Mehrzahl an Messeraufnahmen (10) auf, in die die Messerschäfte (20) der Stabmesser (6) eingeführt sind. Die Messerschäfte (20) weisen im Querschnitt gesehen eine kreissegmentförmige Fläche auf. Um eine einfache und sichere Befestigung der Stabmesser (6) in den Messeraufnahmen (10) zu ermöglichen weisen die Messeraufnahmen (10) komplementär zu den Stabmessern (6) im Querschnitt gesehen eine kreissegmentförmige Fläche auf, so dass die Stabmesser (6) mit ihren Messerschäften (20) jeweils passgenau in den Messeraufnahmen (10) einhegen. Die kraftschlüssige Befestigung erfolgt ausschließlich über Klemmschrauben (22), die die Stabmesser (6) anpressen.

Abstract translation: 切削头（2）包括一盘形刀架（4）和多个刀轴（20），包括棒形刀片（6）。 盘形刀架（4）具有多个叶片保持器（10），其中，所述切割器轴杆的切割刀片（6）（20）被引入。 切割器轴（20）具有在在圆形分段成形的面观察的横截面。 为了使在刀片保持器的棒状刀具（6）（10）的简单和可靠的紧固已刀片支架（10）互补的棒形刀片（6）从横截面看为圆形分段成形的表面，从而使棒形刀片（6）与他们的Messerschäften （20）在外接的刀片支架（10），每个配合。 非正紧固是通过夹紧螺钉手段排他地进行，该按棒状刀具（22）（6）。

公开(公告)号：EP1476269B1

公开(公告)日：2009-10-21

申请号：EP03742523.8

申请日：2003-02-15

Applicant: KENNAMETAL INC.

Inventor： BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter ,  SCHWÄGERL, Jürgen ,  RUY FROTA DE SOUZA, Filho ,  SHULZ, Michael, D. ,  McCOMICK, Michael, R ,  Erickson, Robert A.

IPC: B23B51/02 ,  B23C5/10 ,  B23D77/02

CPC classification number: B23B51/00 ,  B23B51/02 ,  B23B2205/02 ,  B23B2251/02 ,  B23B2251/50 ,  B23C5/109 ,  B23D77/025 ,  B23D2277/02 ,  Y10S408/713 ,  Y10T408/892 ,  Y10T408/907 ,  Y10T408/909 ,  Y10T408/9095 ,  Y10T408/9097 ,  Y10T408/9098

Abstract: The invention relates to a rotary cutting tool (3) that is composed of a tool shank (2) with at least one chucking groove (5) and one exchangeable cutting insert (1). At the tip (4) of the shank as well as in the wall of the chucking groove (5) a recess (6) for accommodating the cutting insert (1) is provided and is delimited on the shank-end by a rim (7) against which the shank-end narrow side (12) of the cutting insert (1) rests. The cutting insert (1) comprises a fastening pin (15) which is accommodated in a location opening (16) of the tool shank (2) that is concentric to the tool axis (A). The tool shank (2), on its circumference, has a limb (9) with a bearing surface (8) that is inclined relative to the tool axis (A) and that corresponds to a likewise inclined bearing surface (10) on a wing (11) of the cutting insert (1). The orientation of inclination of the bearing surfaces (8, 10) corresponds to the direction of rotation (D) of the tool. The inclination of the bearing surfaces (8, 10) produces an axial force that retains the cutting insert (1) on the tool shank (2).

公开(公告)号：EP1230058A1

公开(公告)日：2002-08-14

申请号：EP00985010.8

申请日：2000-11-11

Applicant: KENNAMETAL INC.

Inventor： BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter

IPC: B23B51/02

CPC classification number: B24B3/26 ,  B23B51/02 ,  B23B2251/18 ,  Y10T408/9097

Abstract: The invention relates to a drill bit (2), having main cutting edges (4a, 4b) which are connected together by a transversal cutting edge (6). An open surface (7) which extends into a flute (8) lies adjacent to each main cutting edge. The drill bit (2) is ground, in particular, during a continuous three-dimensional grinding process in such a way that the open surface (7) forms a continuous curved surface which follows a radius of curvature (R) running from the main cutting edge (4a) in the direction of the flute (8). The continuous grinding process, in comparison to a conventional two-stage process, produces an improved drill bit geometry which is devoid of ridges (16). The ridge-free configuration reduces the mechanical stress during drilling to a minimum.

公开(公告)号：EP1294515B1

公开(公告)日：2005-04-13

申请号：EP01936376.1

申请日：2001-05-19

Applicant: KENNAMETAL INC.

Inventor： MÜHLFRIEDEL, Dieter ,  BORSCHERT, Bernhard ,  SCHWÄGERL, Jürgen

IPC: B23B51/02

CPC classification number: B24B19/04 ,  B23B51/02 ,  B23B2251/406 ,  Y10T408/455 ,  Y10T408/909 ,  Y10T408/9097

Abstract: The bit (3) for a twist drill (2) has several main cutting edges (4) which are interconnected by a chisel edge (6). Secondary cutting edges (14) running along flutes (10) in the longitudinal direction (L) of the drill adjoin said main cutting edges. The secondary effective cutting angle η associated with the secondary cutting edges (14) changes in the longitudinal direction of the drill (L). The main cutting edges (4) are preferably configured in a straight line so that the secondary effective cutting angle in this area is 0°. The adjoining secondary effective cutting angle η increases continuously. This enables the bit (3) to absorb greater loads in the area of the main cutting edges (4) and at the same time, guarantees that the chips are removed rapidly from the bore wall of the workpiece to be processed.

公开(公告)号：EP1230058B1

公开(公告)日：2003-10-22

申请号：EP00985010.8

申请日：2000-11-11

Applicant: KENNAMETAL INC.

Inventor： BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter

IPC: B23B51/02

CPC classification number: B24B3/26 ,  B23B51/02 ,  B23B2251/18 ,  Y10T408/9097

Abstract: The invention relates to a drill bit (2), having main cutting edges (4a, 4b) which are connected together by a transversal cutting edge (6). An open surface (7) which extends into a flute (8) lies adjacent to each main cutting edge. The drill bit (2) is ground, in particular, during a continuous three-dimensional grinding process in such a way that the open surface (7) forms a continuous curved surface which follows a radius of curvature (R) running from the main cutting edge (4a) in the direction of the flute (8). The continuous grinding process, in comparison to a conventional two-stage process, produces an improved drill bit geometry which is devoid of ridges (16). The ridge-free configuration reduces the mechanical stress during drilling to a minimum.

公开(公告)号：EP1476269A1

公开(公告)日：2004-11-17

申请号：EP03742523.8

申请日：2003-02-15

Applicant: KENNAMETAL INC.

Inventor： BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter ,  SCHWÄGERL, Jürgen ,  RUY FROTA DE SOUZA, Filho ,  SHULZ, Michael, D. ,  McCOMICK, Michael, R

IPC: B23B51/02 ,  B23C5/10 ,  B23D77/02

CPC classification number: B23B51/00 ,  B23B51/02 ,  B23B2205/02 ,  B23B2251/02 ,  B23B2251/50 ,  B23C5/109 ,  B23D77/025 ,  B23D2277/02 ,  Y10S408/713 ,  Y10T408/892 ,  Y10T408/907 ,  Y10T408/909 ,  Y10T408/9095 ,  Y10T408/9097 ,  Y10T408/9098

Abstract: The invention relates to a rotary cutting tool (3) that is composed of a tool shank (2) with at least one chucking groove (5) and one exchangeable cutting insert (1). At the tip (4) of the shank as well as in the wall of the chucking groove (5) a recess (6) for accommodating the cutting insert (1) is provided and is delimited on the shank-end by a rim (7) against which the shank-end narrow side (12) of the cutting insert (1) rests. The cutting insert (1) comprises a fastening pin (15) which is accommodated in a location opening (16) of the tool shank (2) that is concentric to the tool axis (A). The tool shank (2), on its circumference, has a limb (9) with a bearing surface (8) that is inclined relative to the tool axis (A) and that corresponds to a likewise inclined bearing surface (10) on a wing (11) of the cutting insert (1). The orientation of inclination of the bearing surfaces (8, 10) corresponds to the direction of rotation (D) of the tool. The inclination of the bearing surfaces (8, 10) produces an axial force that retains the cutting insert (1) on the tool shank (2).

公开(公告)号：EP1406741A1

公开(公告)日：2004-04-14

申请号：EP01978311.7

申请日：2001-08-29

Applicant: KENNAMETAL INC.

Inventor： BORSCHERT, Bernhard ,  MÜHLFRIEDEL, Dieter

IPC: B23B51/02

CPC classification number: B23B51/02 ,  B23B2251/02 ,  Y10S408/713 ,  Y10T408/78 ,  Y10T408/907 ,  Y10T408/9097 ,  Y10T408/9098 ,  Y10T408/90993

Abstract: The invention relates to a rotative cutting device, in particular a drill, comprising a tool head (1) consisting of a hard cutting material and a tool shaft (2), which clamps the tool head (1) between two clamp extensions (13, 14) that project axially from said tool shaft (2), in such a way that the tool head is interchangeable. In the fixed position, the interconnected clamping surfaces of the tool head (1) and the clamping extensions (13, 14) of the tool shaft (2) lie on the surface of a truncated cone-shaped fixing peg (7), running coaxially with the longitudinal axis (6) of the tool shaft (2). Said fixing peg tapers in the insertion direction (17), facing the chuck end (12) of the tool shaft (2).

公开(公告)号：EP1910004A1

公开(公告)日：2008-04-16

申请号：EP06753670.6

申请日：2006-05-17

Applicant: Kennametal, Inc.

Inventor： MÜHLFRIEDEL, Dieter

IPC: B23F21/22 ,  B23C5/22

CPC classification number: B23F21/226 ,  Y10T407/1735

Abstract: The invention relates to a blade head (2) which comprises a disk-shaped blade carrier (4) and a plurality of bar blades (6) having blade shanks (20). The disk-shaped blade carrier (4) comprises a plurality of blade holders (10) in which the blade shanks (20) of the bar blades (6) are inserted. The blade shanks (20) have a cross-section in the shape of the segment of a circle. The aim of the invention is to allow the bar blades (6) to be secured in the blade holders (10) in a simple and secure manner. For this purpose, the blade holders (10), complementarily to the blade shanks (6), have a cross-section in the shape of the segment of a circle so that every bar blade (6) with its blade shank (20) accurately fits into the blade holder (10). The bar blades (6) are non-positively secured via clamping screws (22) exclusively which press the bar blades (6) against the holders.

公开(公告)号：EP1294515A1

公开(公告)日：2003-03-26

申请号：EP01936376.1

申请日：2001-05-19

Applicant: KENNAMETAL INC.

Inventor： MÜHLFRIEDEL, Dieter ,  BORSCHERT, Bernhard ,  SCHWÄGERL, Jürgen

IPC: B23B51/02

CPC classification number: B24B19/04 ,  B23B51/02 ,  B23B2251/406 ,  Y10T408/455 ,  Y10T408/909 ,  Y10T408/9097

Abstract: The bit (3) for a twist drill (2) has several main cutting edges (4) which are interconnected by a chisel edge (6). Secondary cutting edges (14) running along flutes (10) in the longitudinal direction (L) of the drill adjoin said main cutting edges. The secondary effective cutting angle η associated with the secondary cutting edges (14) changes in the longitudinal direction of the drill (L). The main cutting edges (4) are preferably configured in a straight line so that the secondary effective cutting angle in this area is 0°. The adjoining secondary effective cutting angle η increases continuously. This enables the bit (3) to absorb greater loads in the area of the main cutting edges (4) and at the same time, guarantees that the chips are removed rapidly from the bore wall of the workpiece to be processed.