| Entries |
| Document | Title | Date |
|---|
| 20080273932 | Radius Endmill - A radius endmill has a peripheral cutting edge, a bottom cutting edge, and a rounded corner cutting edges whose ridge line is defined by a circular arc having a given radius as measured in a side view of the endmill that is parallel to the axis. The rounded corner cutting edge is located in a corner portion of the endmill in which the outer peripheral and the axial end intersect each other such that the peripheral cutting edge and the bottom cutting edge are connected to each other through the rounded corner cutting edge. The bottom cutting edge has a radially inner end lying at the axis, and a radially outer end at which the bottom cutting edge is connected to the rounded corner cutting edge. The bottom cutting edge is curved such that its ridge line is defined by a circular arc as seen in a plan view of the endmill that is perpendicular to the axis. | 11-06-2008 |
| 20080286056 | RADIUS END MILL - In the radius end mill, main gash faces has an angle of inclination with respect to an axis that is smaller than a twist angle of chip discharge flutes. The main gash faces are formed on inner circumferential sides of distal end portions of wall surfaces that face in a tool rotation direction of helically twisted chip discharge flutes, which is formed on an outer circumference of a distal end portion of a tool body that is rotated around the axis. End cutting edges are formed on a distal end of the main gash faces. Sub gash faces has an angle of inclination with respect to the axis that is greater than that of the main gash faces. The sub gash faces are formed on an outer circumferential side of the main gash faces such that they extend away via step portions from the main gash faces. In addition, corner cutting edges that have a protruding arc-shaped contour are formed to be continuous with an outer circumferential side of the end cutting edges extending from a distal end as far as an outer circumference of the sub gash faces. | 11-20-2008 |
| 20090110495 | SMALL RADIUS END MILL TOOL - An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other. | 04-30-2009 |
| 20090185874 | GLASS CUTTING TOOL - A glass cutting tool includes a cutter body provided at a bottom portion thereof with a hole-cutting portion. The hole-cutting portion has a circular cross section and a recessed hole recessed inwardly from a bottom end thereof, such that the contact area between the hole-cutting portion and a workpiece of glass panel can be minimized when the hole-cutting portion is rotated to work on the glass panel, thereby avoiding cracking of the glass panel during working and lowering the defect rate and processing cost. | 07-23-2009 |
| 20090324347 | MILLING CUTTER MANUFACTURING METHOD - A method of manufacturing a milling cutter having a cutting head and a coaxial integral shank comprising the steps of grinding, in a first grinding operation, a plurality of helical flutes ( | 12-31-2009 |
| 20100098504 | END MILLING CUTTER WITH DIFFERENT CUTTING EDGES - The invention concerns an end milling cutter having a plurality of end cutting edges ( | 04-22-2010 |
| 20100172703 | SPHERICAL MILLING CUTTER - The present invention concerns a spherical milling cutter having a shaft and a cutting part which has at least one cutting edge disposed on a spherical surface. To provide a spherical milling cutter having the features set forth in the opening part of the specification which are more efficient in terms of metal removal rate and roughness depth than conventional spherical milling cutters of the same nominal diameter, and which are nonetheless in a position to produce finer concave contours than a conventional spherical milling cutter of the same nominal radius, it is proposed in accordance with the invention that the cutting part has at least two cutting edges which are respectively on at least two different spherical surfaces, the radius of which is at least equal to the nominal radius. | 07-08-2010 |
| 20100202839 | DOUBLE-SIDED CUTTING INSERTS FOR HIGH FEED MILLING - A double-sided cutting insert with a plurality of indexable convex cutting edges can have a top face and a bottom face, at least three convex cutting edges on each face connected by at least three nose corners, at least three peripheral side surfaces extending from each face toward a virtual middle plane; and a common lateral seating surface on each peripheral side surface. Each convex cutting edge can have at least a curved cutting edge region, and can further have a primary substantially straight cutting edge region intermediate the curved cutting edge region and the nose corner. Each peripheral side surface can further have a primary planar facet associated with the primary substantially straight cutting edge, and each face may also be single-handed in same direction. | 08-12-2010 |
| 20100329799 | Cutting tool for lapping plate - A cutting tool for a lapping plate surface profile comprises a major body and a cutting body, and the cutting body comprises a first connection surface, a second connection surface and a third connection surface connecting the first connection surface and the second connection surface. The third connection surface has a secondary portion connecting a arc-shaped portion of the first connection portion and an inclined portion of the second connection portion. The cutting tool employs the arc-shaped portion and the secondary portion to cut the lapping plate so as to form a sound profile surface. | 12-30-2010 |
| 20110013998 | END MILL WITH DIFFERENT HELIX ANGLES - The present invention relates to an end mill, primarily for coarse machining of metallic work pieces, comprising an even number of main flutes that spiral around the periphery of the mill, said flutes having a relatively smaller and a relatively larger helix angle relative to the axis of the mill and wherein uneven-numbered main flutes are defined in that they include the smaller helix angle with the axis. Directly at the end face, the distances between peripheral angles of the successive main flutes in the direction of rotation are smaller between the uneven-numbered main flutes and the subsequent even-numbered main flutes than the distances between peripheral angles between the even-numbered main flutes and the subsequent uneven-numbered main flutes. In order to provide an end mill with the features mentioned above which is better able to prevent vibrations of the tool due to intermittent engagement with a work piece, according to the invention all distances between peripheral angles at the end face of the mill are different from one another. | 01-20-2011 |
| 20110182679 | ROTATING SHAFT TOOL - The invention relates to a shaft tool for machine tools, comprising a shaft, a tool head disposed at a shaft end and equipped with at least one cutting element, and comprising a coupling element disposed at the other shaft end for direct or indirect connection to a machine spindle. A unique feature of the invention is that the shaft comprises a peripheral groove that extends along the circumference of the shaft and is open radially, and at least one spreading element that engages in the peripheral groove and can be radially adjusted therein, resulting in the exertion of spreading and bending forced onto the groove flanks. The peripheral groove is filled with a filler material at least in the area of the spreading element, the filler material having both a sealing function against contaminants and a damping function. The filler material also acts as a rotation prevention for the spreading elements. | 07-28-2011 |
| 20110299947 | CUTTING TOOL WITH RADIAL CUTTING EDGES - A cutting tool includes a body having a working end and a plurality of cutting edges at the working end of the body. Each cutting edge includes a radial cutting edge component. Each radial cutting edge component is oriented at an angle to a radius extending from an axis of rotation of the tool. | 12-08-2011 |
| 20120224928 | MILLING CUTTER - A milling cutter includes a cutting portion including a depression portion and a sidewall surrounding the depression portion, wherein an exterior surface of the sidewall is a cylindrical surface, each of two parts of an internal surface of the sidewall is a slanted surface, so as to form two teeth. The cutting portion is a cylinder with a free end cut off by two virtual surface whose sectional view is V-shaped to form two teeth symmetrical with each other, and the depression portion is defined in the free end. | 09-06-2012 |
| 20120282043 | MILLING CUTTER - A cutter comprises a cutter handle, a cutter neck and a cutter head. The cutter neck interconnects the cutter handle and the cutter head. The cutter head comprises a connecting side surface adjoining the cutter neck, an outer annular surface, a distal end surface opposite to the connecting side surface and away from the cutter neck, and at least one cutting edge formed on the outer annular surface extending from the junction of the connecting side surface and the cutter neck toward the distal end surface, and at least one cutting trough formed on the cutter head adjacent to the at least one cutting edge extending from the junction of the connecting side surface and the cutter neck toward the distal end surface. | 11-08-2012 |
| 20120282044 | ROTARY CUTTING TOOL HAVING A CUTTING EDGE FORMED OF VEINED PCD - A rotary cutting tool formed from a blank, the rotary cutting tool comprising at least one tooth having a root, a cutting edge formed of veined PCD, and a face disposed between the root and the cutting edge. The face, as viewed in a cross-section perpendicular to an axis of the cutting tool, includes a first curved surface proximate the cutting edge and a second curved surface proximate the root and the first curved surface. For each cutting edge, the blank is provided with a respective groove having a leading surface that corresponds in shape to the first curved surface of the respective tooth. | 11-08-2012 |
| 20130315681 | ROTARY CUTTER - The present invention relates to a rotary cutting tool consisting of a shank and at least one cutting section comprising a plurality of cutting teeth, the cutting section being conceptionaly and functionally divided into several sub-sections along the tool axis (“zones” for brevity), wherein each zone has its own core form and its own cutting edges, its own teeth land form and its own zone cutting length, these being selected according to the perceived task for which each zone of the tool is to be optimized. | 11-28-2013 |
| 20140119843 | PCD MILLING CUTTER FOR LENS PROCESSING - Disclosed is a PCD milling cutter for lens processing. The PCD milling cutter includes a shaft having one axial end portion rotatably coupled with a driving unit of a milling unit for lens processing, a rotary head coupled with the axial end portion of the shaft and having a plurality of installation protrusions which protrude outward along a circumference thereof about a rotation center and have outer circumferential surfaces rounded in an axial direction of the shaft, and a plurality of PCD tips coupled with installation surfaces of the installation protrusions positioned in a rotation direction, provided at outer end portions thereof with rounded cutting blades sharply processed in the axial direction of the shaft, and provided in inner end portions thereof, which are opposite to the cutting blades, with cutting grooves formed in a concave shape to increase a welding force. | 05-01-2014 |
| 20140334888 | METHOD FOR OBTAINING A COMPLETE THREADING PROFILE BY MILLING AND MILLING TOOL - A method for milling a threading of a screw or tapped hole. The threading has a cross section in the shape of a triangle with a truncated crest. The method includes milling a first flank (V | 11-13-2014 |
| 20140341661 | MILLING CUTTER - A milling cutter employed to mill top and bottom edges of a workpiece comprises a handle and a cutting head formed on an end of the handle. The cutting head comprises a first processing end coupled to the handle and a second processing end formed on an end of the first processing end away from the handle. The first processing end comprises a first cutting portion extending along a clockwise direction for chamfering the top edge of the workpiece, and the second processing end comprises a second cutting portion extending along a counterclockwise direction for chamfering the bottom edge of the workpiece. | 11-20-2014 |
| 20150086283 | BALL-END MILLING CUTTER TOOL - A tool is disclosed that has an elongated tool body defining a longitudinal axis and includes a ball-end section having a positive taper angle relative to the longitudinal axis of the tool body, and a relief section that extends rearwardly from the ball-end section and has a negative taper angle relative to the positive taper angle of the ball-end section. | 03-26-2015 |
| 20150375309 | MILLING TOOL - A milling tool has a tool shank and a cutting head fastened to the forward end of the tool shank by way of a clamping connection. The clamping connection has a protrusion with clamping faces, and a recess with centering faces that interact with the clamping faces. Each of the centering faces has a first region where the centering faces are spaced from a longitudinal axis of the tool shank by a first distance and a second region at a smaller distance. The first region merges into the second region. The clamping faces of the protrusion are introducible into the recess between the first regions of the centering faces and are movable, by rotation of the cutting head about the longitudinal axis, into a clamping position in which the clamping faces interact in a force-fit with the second regions of the centering faces. | 12-31-2015 |
| 20160031018 | REPLACEABLE MACHINING HEAD - Provided is a replaceable machining head wherein: fractures on the tool attaching portion do not occur; the production cost is minimized; the tool life of the working tool will be lengthened; and the head body is free from a risk of falling off during replacement. In the replaceable machining head, a cutting edge section is formed on the front side of a head body; a tool attaching portion to which a working tool is to be attached, is formed on the rear end side of the cutting edge section; tool attaching faces are formed in the tool attaching potion; the surface of the head body 1 is coated with a coating film; and the number of droplets or macro particles having convex shapes with a size of 0.3 μm to 5.0 μm, is 200 or less, per area of 40 μm×60 μm on the surface of the coating film over the tool attaching faces. | 02-04-2016 |
