Patents Assigned to Korloy, Inc.
  • Publication number: 20190084063
    Abstract: Disclosed is a tool for processing an engine block. The tool for processing the engine block includes: multiple cutting inserts; and main cutting edges which are formed at end portions of the inserts, respectively, in which the main cutting edge has a positive axial inclination angle and a radial inclination angle of ?5 degrees to 0 degree.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 21, 2019
    Applicant: KORLOY INC
    Inventors: Sun Kyoo LEE, Dong Ryong JI, Taeg Won LEE, Byung Sun CHOI
  • Patent number: 10207339
    Abstract: A cutting insert for an indexable drill according to the present disclosure may be used for external cutting or internal cutting depending on a position and a direction in which the cutting insert is installed even though a single type of cutting insert is provided. In addition, the cutting insert for an indexable drill according to the present disclosure has a section of the internal cutting edge which is involved in a cutting process or a section of the internal cutting edge which is not involved in the cutting process, which are clearly distinguished from each other, and as a result, the cutting insert may be rotated and mounted, and reversed and mounted on a drill body, such that maximum eight corners may be used to perform a cutting process.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: February 19, 2019
    Assignee: KORLOY INC
    Inventors: Chan Kyu Park, Hong Seung Son, Sung Hyun Kim, Hyo Joon Lim, Sun Yong Ahn, Young Heum Kim
  • Publication number: 20190030628
    Abstract: The technical objective of the present invention is to provide a cutting insert that can minimize a phenomenon in which the cutting insert is lifted up from a seat surface of a cutting tool while a cutting process is being performed, and can increase an area by which the cutting insert is fastened to the cutting tool.
    Type: Application
    Filed: November 29, 2016
    Publication date: January 31, 2019
    Applicant: KORLOY INC.
    Inventors: Min Seok OH, Ki Chan NAM, Tae Kyun KIM, Nam Seon LEE, Hyo San KIM, Young Heum KIM
  • Publication number: 20190009345
    Abstract: The present disclosure relates to a cutting insert. The cutting insert according to the exemplary embodiment of the present disclosure has a dot formed between a main cutting edge and a chip breaker, and the dot has a bridge formed between the main cutting edges. Therefore, a chip, which is produced during a cutting process, may come into contact with three points on a main cutting edge land portion, the bridge, and the dot. The chip may discharge heat generated from the cutting insert while the chip comes into contact with the three points.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 10, 2019
    Applicant: KORLOY INC
    Inventors: Dong Sub An, Sung Hun Kim, Hyo San Kim, Sang Ho Lim, Young Heum Kim
  • Patent number: 10150170
    Abstract: Provided is an insert for being mounted on a tool holder. The insert includes three substantially right-angled corners along a perimeter, a main cutting edge, a sub cutting edge, and a flat lower surface. A clearance angle of a second end main side surface forms an obtuse angle with respect to a lower surface, and a clearance angle of a second end sub side surface forms an obtuse angle with respect to the lower surface. A clearance angle of a first end main side surface forms a right angle with respect to the lower surface, and a clearance angle of a first end sub side surface forms a right angle with respect to the lower surface.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: December 11, 2018
    Assignee: KORLOY INC.
    Inventors: Ki-Chan Nam, Kane-Hee Lee, Young-Heum Kim
  • Patent number: 10137511
    Abstract: A technical object is to provide an apparatus for attaching or detaching an insert of a cutting tool, which enables easy and fast replacement of the insert. To this end, the apparatus for attaching or detaching the insert to or from a body of the cutting tool is provided in the body of the insert and includes an insert receiving portion formed in the body of the cutting tool to receive the insert therein, a wedge receiving portion formed in the body of the cutting tool continuously after the insert receiving portion, a wedge received in the wedge receiving portion, and a rotating unit configured to rotate the wedge in a first direction that faces the insert receiving portion, or to a second direction opposite the first direction.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: November 27, 2018
    Assignee: KORLOY INC.
    Inventors: Sun-Kyoo Lee, Dong-Ryong Ji, Young-Heum Kim
  • Publication number: 20180333791
    Abstract: The technical objective of the present invention is to provide a double-sided cutting insert having a high feed rate, which can increase the edge strength and reduce the cutting load, and thus can be suitable for high feed rate processing.
    Type: Application
    Filed: August 30, 2016
    Publication date: November 22, 2018
    Applicant: KORLOY INC.
    Inventors: Sang Yong LEE, Young Nam CHOI, Jae Yeong MUN, Sun Yong AHN
  • Patent number: 10112241
    Abstract: A technical object of the present disclosure is to provide an insert, which can maintain rigidity thereof regardless of a clearance angle of a clearance surface that forms a circular cutting edge. To this end, the insert according to the present disclosure includes a circular upper surface, a circular lower surface, and a clearance surface portion connecting the upper surface and the lower surface. The clearance surface portion is divided into first and second clearance surfaces along a circumference thereof, by a first wave line that forms a waveform of valleys facing the lower surface and mounts facing the upper surface.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: October 30, 2018
    Assignee: KORLOY INC.
    Inventors: Sang-Yong Lee, Ki-Chan Nam, Nam-Sun Lee, Kane-Hee Lee, Sun-Yong Ahn, Young-Heum Kim
  • Patent number: 10105772
    Abstract: A technical object is to provide an insert capable of preventing escaping of the insert from an assembly of the insert and a tool holder. To this purpose, the insert includes an insert body, and a holder fastening portion provided in the insert body to be fastened to the tool holder, in which the holder fastening portion includes one or more fastening holes formed through the insert body from an upper surface to a lower surface, and one or more locking recesses formed by being recessed in a lower surface periphery of the insert body.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: October 23, 2018
    Assignee: KORLOY INC.
    Inventors: Sang-Yong Lee, Nam-Sun Lee, Ki-Chan Nam, Kane-Hee Lee, Sun-Yong Ahn
  • Patent number: 10099298
    Abstract: The present disclosure relates to a cutting insert and an indexable drill. The cutting insert and the indexable drill according to the present disclosure are configured such that when the cutting insert is mounted on the indexable drill, the cutting insert is easily inserted into the indexable drill at the initial time, and strong coupling force is implemented between the indexable drill and the cutting insert at a point of time at which the cutting insert is completely mounted. In addition, the cutting insert, according to the present disclosure, has excellent rigidity, when compared to cutting inserts in the related art that perform identical/similar cutting processing, since a portion, which is weak in rigidity, is provided as a thick portion.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: October 16, 2018
    Assignee: KORLOY INC
    Inventors: Hong Seung Son, Chan Kyu Park, Hyo Joon Lim, Sung Hyun Kim, Sun Yong Ahn, Young Heum Kim
  • Patent number: 10086447
    Abstract: A cutting insert and a cutting tool having same are provided. The cutting insert includes an upper surface, a lower surface having a flat surface, side surfaces connecting to each of the upper surface and the lower surface, and cutting edges being formed by the upper surface and the side surfaces. A first cutting edge among the cutting edges is inclined downward. A major side surface among the side surfaces comprises a first major side surface connected to the upper surface so as to constitute the first cutting edge, and a second major side surface connected to the first major side surface and the lower surface. The first major side surface has a reversely positive surface, and the second major side surface has a reversely positive surface or a negative surface, and a minor side surface among the side surfaces has a positive surface or a negative surface.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 2, 2018
    Assignee: KORLOY INC.
    Inventors: Ki-Chan Nam, Young-Heum Kim, Kane-Hee Lee, Hyo-San Kim
  • Patent number: 10086435
    Abstract: A cutting insert for high-efficiency cutting is disclosed. The cutting insert includes an upper surface (110a), a lower surface (HOb), side surfaces (114) and corner side surfaces (116), which connect the side surfaces to each other. A circular opening is formed through the central portions of the upper and lower surfaces. In the cutting insert, cutting edges are formed by respective junctions between one of the upper and lower surfaces and the side surfaces and between one of the upper and lower surfaces and the corner side surfaces. The cutting edges comprise three corner cutting edges (122), six major cutting edges (124), which extend from opposite ends of the corner cutting edges towards the neighbor corner cutting edges, and three minor cutting edges (126), which are connected between the major cutting edges. Furthermore, the cutting edges may be formed on both the upper surface and the lower surface.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: October 2, 2018
    Assignee: Korloy Inc.
    Inventors: Wook Jung Sung, In Sik Sung
  • Publication number: 20180258525
    Abstract: The present invention relates to a hard coating including an MT-TiCN layer and an ?-alumina layer which are formed by using a chemical vapor deposition method. A hard coating for cutting tools, which is a coating formed on a base material of a cutting tool formed of a hard material, the coating comprising: a TiCN layer; and an ?-alumina layer formed on the TiCN layer, wherein: the ?-alumina layer has a main peak (maximal strength peak) of (006) plane located between 20-40 degrees during a psi rocking analysis by an XRD; a residual stress in the ?-Al2O3 layer is ?0.9-0.4 GPa; the TiCN layer is composed of TiCxNyOz (x+y+z?1, x>0, y>0, z?0); a composition ratio of C/(C+N) is greater than or equal to 0.4 and smaller than 0.5; the ratio of TC(220)/TC(422) is smaller than 0.45; and the ratio of TC(220)/TC(422) is less than 0.45.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 13, 2018
    Applicant: KORLOY INC.
    Inventors: Seong-woo CHO, Dong-youl LEE, Jae-hoon KANG, Soon-yong HONG, Sun-yong AHN, Young-heum KIM
  • Publication number: 20180245201
    Abstract: A hard coating includes a thin film layer which has a total thickness of 0.5-10 ?m and has an overall composition of Al1-a-bTiaMebN (0.2<a?0.6, 0<b?0.15) , where Me is a nitride constituent element having a thermal expansion coefficient of greater than 2.7×10?6/° C. and less than 9.35×10?6/° C., wherein the thin film layer has a structure in which a nano-multilayered-structure of thin layers A, B and C, thin layer B being disposed between thin layer A and thin layer C, is repeatedly laminated at least once.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 30, 2018
    Applicant: KORLOY INC.
    Inventors: Je-Hun PARK, Beom-Sik KIM, Seung-Su AHN, Kyoung-il KIM, Dong-Youl LEE, Sun-Yong AHN, Young-Heum KIM
  • Publication number: 20180200808
    Abstract: The technical objective of the present invention is to provide a cutting insert that has an improved fastening property with a cutting tool, thereby preventing reduction of the service life. To this end, the cutting insert according to the present invention has three corners along the circumference thereof; an upper main cutting edge, which is formed on the edge between the upper surface and the first side surface, and an upper sub cutting edge, which is formed on the edge between the upper surface and the second side surface, are continuously disposed between respective corners; the lower surface has the same shape as that of the upper surface; and the angle defined between the upper main cutting edge and the upper sub cutting edge, which are placed on both sides with reference to each corner, is larger than or equal to 85° and is smaller than 90°.
    Type: Application
    Filed: May 27, 2016
    Publication date: July 19, 2018
    Applicant: KORLOY INC.
    Inventors: Nam-seon LEE, Ki-chan NAM, Kane-hee LEE, Hyo-san KIM, Young-heum KIM
  • Publication number: 20180085836
    Abstract: The purpose of the present invention is to provide a cutting insert capable of reducing cutting load and enhancing squareness.
    Type: Application
    Filed: March 3, 2016
    Publication date: March 29, 2018
    Applicant: KORLOY INC.
    Inventors: Young-nam CHOI, Sang-yong LEE, Sun-yong AHN
  • Patent number: 9855608
    Abstract: Disclosed is a hard coating film formed on a hard base material such as cemented carbide. The hard coating film has a nanoscale multilayered structure to have improved oxidation resistance and wear resistance. The hard coating film is a hard coating film formed on the base material. The first layer is composed of a TiAl nitride having a composition of Ti1-aAla (0.3?a?0.7), and the second layer has a nanoscale multilayered structure or a structure in which the nanoscale multilayered structure is repeatedly laminated at least two times, the nanoscale multilayered structure including a thin layer A composed of an AlTiSi nitride, a thin layer B, a thin layer C composed of a AlCr nitride, and a thin layer D having thicknesses of 3 nm to 20 nm. The thin film B and the thin film D are composed of a TiAl nitride.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: January 2, 2018
    Assignee: KORLOY INC.
    Inventors: Je-Hun Park, Seung-Su Ahn, Sung-Gu Lee, Seoun-Yong Ahn, Young Heum Kim
  • Patent number: 9808871
    Abstract: The objective of the present invention is to provide a cutting insert which reduces cutting load and can be accurately positioned at a coupling part of a cutting tool even if cutting edges are broken or deformed. To this end, the cutting insert of the present invention includes an upper surface, a lower surface, a plurality of lateral surfaces connecting the upper surface with the lower surface, and a plurality of upper cutting edges formed between the plurality of lateral surfaces and the upper surface.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: November 7, 2017
    Assignee: KORLOY INC.
    Inventors: Byung-Sun Choi, Sun-Kyoo Lee, Taeg-Won Lee, Dong-Ryong Ji, Dong-Bok Park
  • Publication number: 20170306455
    Abstract: A cemented carbide comprises particles including a tungsten carbide (WC) as a main component; a binder phase including cobalt (Co) as a main component; and particles including a carbide or a carbonitride of at least one selected from the group consisting of Group 4a, 5a, and 6a elements, or a solid solution thereof, wherein a cubic phase free layer (CFL), in which the carbide or the carbonitride is not formed, is formed from a surface of the cemented carbide to a depth of 5 ?m to 50 ?m.
    Type: Application
    Filed: November 10, 2015
    Publication date: October 26, 2017
    Applicant: KORLOY INC.
    Inventors: Jung-wook KIM, Sung-Gu LEE, Yong-hyun KIM, Sun-yong AHN
  • Publication number: 20170306500
    Abstract: A cutting tool comprises a base material which includes particles including a tungsten carbide (WC) as a main component, a binder phase including cobalt (Co) as a main component, and particles including a carbide or a carbonitride of at least one selected from the group consisting of Group 4a, 5a, and 6a elements, or a solid solution thereof; and a hard film formed on the base material, wherein the hard film comprises at least an alumina layer, a cubic phase free layer (CFL), in which the carbide or the carbonitride is not formed, is formed from a surface of the base material to a depth of 10 ?m to 50 ?m, and a Co content of a surface of the CFL is 80% or more of a maximum Co content of the CFL.
    Type: Application
    Filed: November 10, 2015
    Publication date: October 26, 2017
    Applicant: KORLOY INC.
    Inventors: Yong-hyun KIM, Jung-wook KIM, Sung-Gu LEE, Sun-Yong AHN