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.

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.

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.

Abstract: The present invention relates to an insert for slot milling, and more specifically, to an insert for slot milling which can smoothly form a front end surface of a concave portion of a slot formed at a cutting target, and provides a safe use thereof by preventing the erroneous installation of cutting inserts coupled with insert-installation seats on both sides of a milling cutter body to prevent damage of the cutting inserts and the milling cutter. To this end, the present invention is characterized in that the plurality of cutting inserts are provided around the slot milling cutter body, one of two cutting inserts protrudes with respect to one side of the milling cutter body and the other protrudes with respect to the opposite side of the milling cutter body, and two cutting inserts are formed with different structures to prevent the erroneous installation thereof on the insert-installation seats prepared on both sides of the milling cutter body.

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.

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.

Abstract: The present invention relates to an insert for slot milling, and more specifically, to an insert for slot milling which can smoothly form a front end surface of a concave portion of a slot formed at a cutting target, and provides a safe use thereof by preventing the erroneous installation of cutting inserts coupled with insert-installation seats on both sides of a milling cutter body to prevent damage of the cutting inserts and the milling cutter. To this end, the present invention is characterized in that the plurality of cutting inserts are provided around the slot milling cutter body, one of two cutting inserts protrudes with respect to one side of the milling cutter body and the other protrudes with respect to the opposite side of the milling cutter body, and two cutting inserts are formed with different structures to prevent the erroneous installation thereof on the insert-installation seats prepared on both sides of the milling cutter body.