Patent application number | Description | Published |
20090148245 | CUTTING TOOL - The present invention is directed to a cutting tool, comprising: at least one cutting insert; a tool body including a pocket portion to which the cutting insert is mounted; a means for fixing the cutting insert to the pocket portion of the tool body; and a screw for finely adjusting the position of the cutting insert fixed to the pocket portion of the tool body. The screw has a head portion, a threaded portion and a portion for connecting the head portion to the threaded portion. The pocket portion has a bottom surface with a screw hole formed thereon into which the threaded portion is fastened. It also has a side wall comprising a surface for closely contacting the head portion of the screw. The head portion of the screw closely contacts and resiliently pressurizes the close contact surface of the pocket portion when the threaded portion is fastened into the screw hole. | 06-11-2009 |
20100028092 | Double-Sided Cutting Insert and Milling Cutter Mounting The Same - A double-sided milling cutting insert has usable upper and lower faces. The upper face has a polygonal shape with curved edges. The lower face has a rotationally symmetrical relation to the upper face. Flank faces connect edges of the upper face to corresponding edges of the lower face. Upper cutting edges are formed on one of the edges of the upper face. The upper chip-forming portions have rake faces inclined downwardly from the upper cutting edges inwardly of the cutting insert and a plurality of protrusions arranged along inner boundaries of the rake faces for deflecting chips. When the cutting insert is mounted on the cutting tool, a width of the rake face of the upper chip-forming portion adjacent to an edge portion forming a main cutting edge gradually increases in a direction going away from a rotational axis of the cutting tool. | 02-04-2010 |
20100183381 | CUTTING INSERT AND CUTTING TOOL THEREWITH - The present invention provides a cutting insert and a cutting tool used with the same. A tool body includes at least one seating surface and a threaded hole extending as slanted with respect to the seating surface. At least one cutting insert having a mounting hole passing therethrough is removably secured on the seating surface. A screw passes through the mounting hole and is fastened to the threaded hole, thereby removably securing the cutting insert to the tool body. A wall surface of the mounting hole contacts a head of the screw about at least one first contact portion and at least one second contact portion. The first contact portion is formed at a level different from that of the second contact portion along a longitudinal axis of the mounting hole. Contact angles at the first contact portions and the second contact portions are different from each other. | 07-22-2010 |
20100239379 | Cutting Insert - A cutting insert of the present invention has a body, auxiliary cutting edges of a convex curve shape and main cutting edges. The body has a top surface, a bottom surface, side surfaces connecting the top and bottom surfaces, and corner surfaces connecting the adjacent side surfaces. The auxiliary cutting edges are formed at intersections between the top and bottom surfaces and the side surfaces. The main cutting edges are formed at intersections between the top and bottom surfaces and the corner surfaces. The main cutting edge in the top surface extends from an end of an adjacent auxiliary cutting edge to its center in a direction toward the bottom surface and from the center to an end of another adjacent auxiliary cutting edge in a direction away from the bottom surface. | 09-23-2010 |
20110097165 | Cutting Tool and Cartridge for the Same - A cutting tool for machining metallic materials has at least one cutting portion having a cartridge and a cartridge pocket for mounting cutting inserts to the cutting tool. The cartridge pocket has a top surface, a rear supporting surface and a bottom supporting surface. The top surface of the cartridge pocket has one or more serrated projecting portions. The cartridge has an insert pocket, a top surface, a first side surface and a bottom surface. The insert pocket of the cartridge receives a cutting insert. The top surface of the cartridge has one or more outwardly sloped surfaces and one or more inwardly sloped surfaces. The outwardly sloped surfaces mate with the serrated projecting portions. The inwardly sloped surfaces have a gap with respect to the projecting portions of the cartridge pocket. | 04-28-2011 |
20110164932 | Cutting Insert and Milling Cutter Provided with the Same - A milling cutter is provided with a cutting insert having improved main cutting edges. The main cutting edges are positioned along both lengthwise edges of a front surface, have a wave shape and are asymmetrical with each other. Main cutting edges positioned along both lengthwise edges of a back surface are rotationally symmetrical by 180 degrees from the main cutting edges of the front surface with respect to a longitudinal central axis of the cutting insert. In the milling cutter, the cutting inserts are alternately mounted in pockets formed on a side surface of the milling cutter so that the concavo-convex portions of the active main cutting edges of the cutting inserts which are adjacent to each other are staggered with respect to each other. | 07-07-2011 |
20110255924 | Exchangeable Cutting Insert - A cutting insert having a plurality of corner cutting edges has an upper face, a lower face, two longitudinal side faces and two transversal side faces connecting the upper face and the lower face. A through hole passes through central parts of the upper face and the lower face. The longitudinal side faces are opposite to each other and normal to both upper and lower faces, as are the transversal side faces. The upper face and the lower face are each provided with two chip discharge grooves, each chip discharge groove extending along a corresponding one of the transversal side faces, the two chip discharge grooves being inclined oppositely in the transverse direction so that the upper face and the lower face are each provided with two corner cutting edges at diagonally opposite corners. The longitudinal length of the insert is longer than the transversal length of the insert. The cutting insert can be mounted stably to a small-diametered cutter with a sufficient mounting surface. | 10-20-2011 |
20120070239 | Double-Sided Cutting Insert Having a Circular Shape and Cutting Tool Using the Same - A cutting insert has a circular top surface, a bottom surface shaped to be identical to the top surface, a cylindrical side surface for connecting the top and bottom surfaces, and cutting edges formed between the top and side surfaces and between the bottom and side surfaces. The side surface of the cutting insert has a plurality of rotation prevention surfaces substantially perpendicular to the top and bottom surfaces in the circumferential direction of the side surface. | 03-22-2012 |
20120070242 | Cutting Insert - A cutting insert has a top surface, a bottom surface, a plurality of side surfaces that connect the top and bottom surfaces. The side surfaces form an obtuse angle with the bottom surface as well as an acute angle with the top surface. The side surfaces include a first side surface and a second side surface, which form an obtuse angle with each other when seen from the above. A main cutting edge is formed at an intersection between the first side surface and the top surface. An inclined cutting edge, which is only for ramp milling, and a minor cutting edge are formed at an intersection between the second side surface and the top surface. An obtuse angle, which the second side surface forms with the bottom surface, is greater than that which the first side surface forms with the bottom surface. | 03-22-2012 |
20130302099 | TANGENTIAL CUTTING INSERT - A hexahedral insert has top and bottom faces and two pairs of opposing side faces with main cutting edges formed on the borders of the top and bottom faces to the side faces and a screw hole passing through each central portion of the top and bottom faces. The top and bottom faces are flat planes parallel to each other; each of the side faces consecutively from top to bottom includes an upper land portion, an upper inwardly-inclined portion, a flat support surface, a lower inwardly-inclined portion, and a lower land portion. Each of two adjacent side faces has a corner surface therebetween which forms corner edges on the borders to the top and bottom faces. The cutting insert enhances the cutting power by reducing cutting resistance and prevents scratches on a machined surface. | 11-14-2013 |