公开(公告)号：EP2160261A1

公开(公告)日：2010-03-10

申请号：EP07747121.7

申请日：2007-06-26

申请人： Taegutec. Ltd.

发明人： PARK, Hong-Sik ,  CHO, Ho-Hyoun

IPC分类号： B23B27/16 ,  B23B27/08

CPC分类号： B23B27/141 ,  B23B2200/082 ,  B23B2200/087 ,  Y10T407/23 ,  Y10T407/235

摘要： The present invention discloses a cutting insert for a machining tool having a structure being capable of controlling effectively chips generated on a work-piece. The cutting insert according to the present insert has an upper surface, a lower surface, a plurality of side surfaces connecting the upper surface and the lower surface and a central hole formed at a central portion thereof, and is characterized in that a flat seating surface is formed on a highest level of the upper surface; a plurality of side cutting edge portions are formed at border portions of the upper surface and the side surfaces; a corner cutting edge portion is formed at a border portion of two adjacent side cutting edge portions, the corner cutting edge portion has a cutting edge formed at a front end thereof; a land portion, a downward inclined surface, a corner bottom surface, a first protrusion, an upward inclined surface and the seating surface are formed on the corner cutting edge portion sequentially along a diagonal line directed from the cutting edge to the central hole; a pair of second protrusions are formed and disposed symmetrically on both sides of the diagonal line so that the corner bottom surface is surrounded by the downward inclined surface, the first protrusion, and the second protrusions; and the corner bottom surface has the smallest height and the seating surface has the largest height along the diagonal line.

公开(公告)号：EP2183068B1

公开(公告)日：2012-10-31

申请号：EP07793462.8

申请日：2007-08-10

申请人： Taegutec. Ltd.

发明人： PARK, Hong-Sik ,  CHO, Ho-Hyoun

IPC分类号： B23B29/12 ,  B23B29/04

CPC分类号： B23B27/1677 ,  Y10T407/2272 ,  Y10T407/2274 ,  Y10T407/2276 ,  Y10T407/2282

公开(公告)号：EP2160261B1

公开(公告)日：2012-05-23

申请号：EP07747121.7

申请日：2007-06-26

申请人： Taegutec. Ltd.

发明人： PARK, Hong-Sik ,  CHO, Ho-Hyoun

IPC分类号： B23B27/16 ,  B23B27/08

CPC分类号： B23B27/141 ,  B23B2200/082 ,  B23B2200/087 ,  Y10T407/23 ,  Y10T407/235

摘要： The present invention discloses a cutting insert for a machining tool having a structure being capable of controlling effectively chips generated on a work-piece. The cutting insert according to the present insert has an upper surface, a lower surface, a plurality of side surfaces connecting the upper surface and the lower surface and a central hole formed at a central portion thereof, and is characterized in that a flat seating surface is formed on a highest level of the upper surface; a plurality of side cutting edge portions are formed at border portions of the upper surface and the side surfaces; a corner cutting edge portion is formed at a border portion of two adjacent side cutting edge portions, the corner cutting edge portion has a cutting edge formed at a front end thereof; a land portion, a downward inclined surface, a corner bottom surface, a first protrusion, an upward inclined surface and the seating surface are formed on the corner cutting edge portion sequentially along a diagonal line directed from the cutting edge to the central hole; a pair of second protrusions are formed and disposed symmetrically on both sides of the diagonal line so that the corner bottom surface is surrounded by the downward inclined surface, the first protrusion, and the second protrusions; and the corner bottom surface has the smallest height and the seating surface has the largest height along the diagonal line.

公开(公告)号：EP2183068A1

公开(公告)日：2010-05-12

申请号：EP07793462.8

申请日：2007-08-10

申请人： Taegutec. Ltd.

发明人： PARK, Hong-Sik ,  CHO, Ho-Hyoun

IPC分类号： B23B29/12 ,  B23B29/04

CPC分类号： B23B27/1677 ,  Y10T407/2272 ,  Y10T407/2274 ,  Y10T407/2276 ,  Y10T407/2282

摘要： There is provided an insert clamp for securing a cutting insert to a tool holder, the cutting insert having a central hole with its axis perpendicular to an upper surface, comprising: a forward protrusion to be received in the central hole of the insert, a central body portion provided with a pressing part to press down the upper surface of the insert and a screw hole for a clamping screw to pass through, and a rear protrusion having a rear contact surface to come in contact with a rearward slanting surface of the tool holder; wherein the forward protrusion is formed on the forward end of the insert clamp, an inside surface of the forward protrusion extends downward in a spaced state apart from the inner wall of the central hole of the insert, and a distal portion of the inside surface the forward protrusion is provided with a protuberance of convex curved surface to come in tangential contact with the inner wall of the insert; and the pressing part is formed on the bottom surface of the central body portion of the insert clamp, and has convex curved surfaces to come in tangential contact with the upper surface of the insert on both regions of the bottom surface of the central body portion which is bisected by a central line passing through the forward protrusion and the screw hole. The insert clamp in accordance with the present invention has an effect to provide a durable and stable clamping structure with no mobility over the entire body of the insert clamp.