公开(公告)号：EP2358491A1

公开(公告)日：2011-08-24

申请号：EP08878290.9

申请日：2008-11-21

申请人： Taegutec. Ltd.

发明人： PARK, Hong Sik ,  JOO, Jang Hyuk

IPC分类号： B23B27/16 ,  B23C5/20

CPC分类号： B23B27/141 ,  B23B2200/086 ,  B23B2222/36 ,  B23B2222/80 ,  B23B2250/12 ,  Y10T82/10 ,  Y10T407/235

摘要： The present invention discloses a cutting insert being capable of radiating effectively heat generated during the cutting machining process and having a structure by which a sufficient surface area is in contact with a tool holder and cutting fluid can be smoothly flowed. The cutting insert according to the present invention comprises an upper face and a lower face being opposite to each other, a plurality of side faces connecting the upper face and the lower face and a through hole passing through the upper face and the lower face, the upper face being divided into a periphery region disposed adjacently to cutting edges formed by the upper face and the side faces, and a central protruded region disposed between the through hole and the periphery region and surrounding the through hole, the central protruded region being placed higher than the edges. Here, the periphery region is formed along all the cutting edges and comprising an descent face inclined downward from the cutting edge to the central protruded region, a bottom face and an ascent face inclined upward from the bottom face to the central protruded region, and a plurality of grooves are formed on the central protruded region of the upper face, the groove being formed such that both ends of respective groove are directed to the adjacent cutting edges.

摘要翻译： 本发明公开了一种切削刀片，其能够有效地散发在切削加工过程中产生的热量，并且具有足够的表面积与刀架接触并且切削液能够平稳地流动的结构。 根据本发明的切削刀片包括彼此相对的上表面和下表面，连接上表面和下表面的多个侧面以及穿过上表面和下表面的通孔， 上表面被分成与上表面和侧表面形成的切割边缘相邻设置的周边区域以及设置在通孔和周边区域之间并围绕通孔的中央凸起区域，中央凸起区域设置得更高 比边缘。 这里，周边区域沿着所有切削刃形成并且包括从切削刃向下倾斜到中央突出区域的下降面，底面和从底面向上倾斜到中央突出区域的上升面，以及 在上表面的中央突出区域上形成有多个槽，该槽形成为使得各槽的两端指向相邻的切削刃。

公开(公告)号：EP2349617A1

公开(公告)日：2011-08-03

申请号：EP09836269.2

申请日：2009-10-16

申请人： TaeguTec Ltd.

发明人： KIM, Min Gu

IPC分类号： B23B51/02

CPC分类号： B23B51/048 ,  Y10T408/9095

摘要： The present invention relates to a cutting tool for drilling having inserts in the same shape and being capable of discharging a chip in a chip flute. The cutting tool comprises: a body including a chip flute; and indexable inner and outer cutting inserts disposed in an insert pocket formed at an end of the chip flute. The inner cutting insert is located close to a central axis of the body compared to the outer cutting insert. The inner and outer cutting inserts have the same shape and include lower cutting edges for depth cutting during drilling. The lower cutting edge of the inner cutting insert is disposed lower than the lower cutting edge of an imaginary cutting insert at a position where the inner cutting insert is overlapped with the imaginary cutting insert where the outer cutting insert is rotated by approximately a half-turn relative to the central axis.

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.

公开(公告)号：EP2164659A1

公开(公告)日：2010-03-24

申请号：EP08753327.9

申请日：2008-05-06

申请人： Taegutec Ltd.

发明人： PARK, Hong Sik ,  NA, Bo Ra

IPC分类号： B23B27/04

CPC分类号： B23B27/143 ,  B23B2200/0428 ,  B23B2200/081 ,  B23B2200/085 ,  B23B2200/161 ,  B23B2200/163 ,  B23B2200/205 ,  B23B2200/321 ,  B23B2200/323 ,  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. A cutting insert according to the present invention includes 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, the side surfaces lying on an imaginary polygon. In the cutting insert, a flat seating surface is formed on a highest portion of the upper surface, a plurality of side cutting edge portions are formed at border portions of the upper surface and the side surfaces, each side cutting edge portion has a side cutting edge formed at an upper end thereof, 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 upward inclined surface, a first protrusion, a second upward inclined surface, a second protrusion, an upward grooved surface and the seating surface are sequentially formed sequentially on the corner cutting edge portion along a diagonal line directed from the corner cutting edge to the central hole, and the corner bottom surface has the smallest height along the diagonal line.

公开(公告)号：EP2152926A1

公开(公告)日：2010-02-17

申请号：EP07746241.4

申请日：2007-04-27

申请人： Taegutec Ltd.

发明人： AHN, Dong Gil ,  LEE, Kern Woo

IPC分类号： C23C14/02 ,  B24C1/06

CPC分类号： B24C1/08 ,  B24C1/06 ,  B24C1/086 ,  C23C14/028 ,  C23C16/0254 ,  Y10T428/24355

摘要： The present invention provides a method of a pre-treatment process for coating, which notably improves both the surface roughness of a coating layer of a cemented carbide cutting tool and the bonding force of the coating layer to the substrate. According to the method of the present invention, a sintered surface layer within a range of 0.5-5μm, which corresponds to the tungsten carbide particle size of a substrate, is properly removed from the substrate surface of a cemented carbide cutting tool. Thus, a porous sintered surface layer having a non-uniform structure is removed and a substrate surface having high structure density and evenness is provided compared to blasting pre-treatment. In order to obtain a sufficient bonding force between a coating layer and the substrate, the surface ratio of open pores, which exist around tungsten carbide particles appearing by removal of the porous sintered surface, is equal to or more than 5%.

公开(公告)号：EP2934803B1

公开(公告)日：2020-04-01

申请号：EP13869494.8

申请日：2013-12-20

申请人： Taegutec Ltd.

发明人： CHOI, Chang Hee ,  RYU, Su Jin

IPC分类号： B23C5/20 ,  B23C5/22

公开(公告)号：EP3406379B1

公开(公告)日：2020-01-22

申请号：EP18179101.3

申请日：2008-04-14

申请人： Taegutec. Ltd.

发明人： CHOI, Chang Hee ,  PARK, Chang Gyu ,  JUNG, Kang Sool

IPC分类号： B23C5/02 ,  B23C5/20

公开(公告)号：EP3406379A1

公开(公告)日：2018-11-28

申请号：EP18179101.3

申请日：2008-04-14

申请人： Taegutec. Ltd.

发明人： CHOI, Chang Hee

IPC分类号： B23C5/02 ,  B23C5/20

摘要： The present invention relates to a milling cutter (200) comprising an insert pocket (201) and a cutting insert (100) mounted in the insert pocket (201) by means of a clamping screw (210); the cutting insert (100) having a shape having an upper face (150) and a lower face (160) being opposite to each other, two longitudinal side faces (110, 120), and two transversal side faces (130, 140) connecting the upper face (150) and the lower face (160), with a through hole (190) passing through each central part of the upper face (150) and the lower face (160), wherein
the longitudinal side faces (110, 120) are opposite to each other, and normal to the upper face (150) and the lower face (160);
the transversal side faces (130, 140) are opposite to each other, and normal to the upper face (150) and the lower face (160);
each of the upper face (150) and the lower face (160) is provided with two chip discharge grooves (153, 154) extended along both transversal side faces (130, 140), the two chip discharge grooves (153, 154) are inclined oppositely in the transverse direction so that each of the upper face (150) and the lower face (160) is provided with two corner cutting edges (150-1, 150-2) at diagonally opposite corners,
the longitudinal length of the cutting insert (100) is longer than the transversal length of the cutting insert (100);
wherein the cutting insert (100) is mounted in the pocket (201) such that the two longitudinal side faces (110, 120) are disposed in the axial direction of the cutter (200) and the two transversal side faces (130, 140) are disposed in the radial direction of the cutter (200); and one longitudinal side face (120) and one transversal side face (130) acts as the corner cutting edge.

公开(公告)号：EP2167262B2

公开(公告)日：2018-10-31

申请号：EP07746913.8

申请日：2007-06-14

申请人： TaeguTec Ltd.

发明人： BAE, Byung Gyun

IPC分类号： B23B51/02 ,  B23B51/04

CPC分类号： B23B51/048 ,  B23B2200/125 ,  B23B2205/12 ,  B23B2251/50 ,  Y10T407/23 ,  Y10T408/905 ,  Y10T408/906 ,  Y10T408/907 ,  Y10T408/9098 ,  Y10T408/90993

摘要： The present invention relates to a drill body for a drill having a rotational axis, comprising an inner pocket (20) formed adjacent to the rotational axis at a proximal end of the drill body and an outer pocket (20') formed further away from the rotational axis than the inner pocket at the proximal end of the drill body. Each of said pockets comprises a first wall (51, 61, 51", 61") facing the workpiece, a second wall (51', 61', 51"', 61"') substantially perpendicular to the first wall and disposed adjacent to the rotational axis of the drill body, and a bottom surface (71, 71'). Each of the first wall and the second wall comprise a respective flat lower side surface (61, 61', 61", 61 "', 61"") adjacent to the bottom surface and a respective curved upper surface (51, 51', 51", 51"', 51"") extending from the lower side surface. The first walls of the inner and outer pockets include identical surface shapes while the second walls of the inner and outer pockets include identical surface shapes.

公开(公告)号：EP2291257B1

公开(公告)日：2017-08-02

申请号：EP08766313.4

申请日：2008-06-13

申请人： TaeguTec Ltd.

发明人： CHOI, Chang Hee ,  PARK, Chang Gyu

IPC分类号： B23C5/10 ,  B23C5/20 ,  B23B27/16

CPC分类号： B23C5/2226 ,  B23C5/08 ,  B23C5/202 ,  B23C2200/0438 ,  Y10T407/1924 ,  Y10T407/1932 ,  Y10T407/1936 ,  Y10T407/1962 ,  Y10T407/227 ,  Y10T407/23 ,  Y10T407/235