Abstract: A numerical controller stores tool data (including information on an inclination and length of a linear blade of a tool), reads an instruction block from a program, analyzes the instruction block, and generates instruction data indicating a movement amount of the tool on each axis instructed by the instruction block. Further, when performing taper machining, the numerical controller calculates a compensating amount for compensating an instructed path, based on the stored tool data, such that an actually-machined taper angle matches a taper angle instructed by the instruction block, compensates the generated instruction data based on the calculated compensating amount, and outputs the compensated instruction data.

Abstract: A cutting insert of one aspect includes a main body section and a cutting section located in front of the main body section. The cutting section includes a front cutting edge disposed along a ridge line of the cutting section at an intersection between a top surface and a first side surface; and a lateral cutting edge disposed along the ridge line at an intersection between the top surface and a second side surface and inclined with ascending as getting away from the front cutting edge. The lateral cutting edge each includes a first region and a second region located to a rear of the first region; and an angle of inclination of the second region with respect to the bottom surface is larger than an angle of inclination of the first region with respect to the bottom surface.

Abstract: A cutting tool includes a cutting insert that is held in a holder in a detachable manner. The cutting insert has a substantially regular quadrangular shape in plan view and includes four round corners. The cutting insert is formed of CBN sinter as a whole. The cutting insert includes two principal surfaces that are upper and lower surfaces opposite to each other, and four side surfaces that are arranged so as to connect the principal surfaces to each other. A boundary portion (ridge line portion) between each of the principal surfaces and each of the side surfaces forms a cutting edge. In a central portion of each of the side surfaces of the cutting insert, a groove for absorbing a crack, having a substantially V-shape in cross section, is formed all around the cutting insert so as to be recessed with respect to the side surfaces.

Abstract: A first speed and a second speed slower than the first speed are set as a contact speed when a work w and a detection jig t attached to a tool post are brought into contact with each other to detect a position or a posture of the work w, the work and the detection jig are brought into contact with each other at the first speed, the detection jig and the work contacting each other are separated from each other by a predetermined distance, the work and the detection jig which are separated from each other are brought into contact with each other at the same position at the second speed, and a correction value ? is obtained based on a tool post position or a spindle angle during the second contact.

Abstract: The shell of this helical broach (1) is formed by stacking a plurality of wafer shells (20W(1)-20W(N)) in the axial direction, and is obtained by forming on the wafer shells (20W(1)-20W(N)) finishing blades (30W(1)-30W(N)) corresponding to teeth grooves on a piece to be cut (W) and forming the finishing blades (30W(1)-30W(N)) such that the blade width gradually increases with each of the aforementioned wafer shells (20W(1)-20W(N)) from the leading end of the cutting direction toward the trailing end of the cutting direction.

Abstract: A method to form a surface on a metal work piece includes providing a turning insert having a first cutting edge, a second cutting edge and a convex nose cutting edge connecting the first and second cutting edges, a nose angle formed between the first and second cutting edges being less than or equal to 85°; arranging the second cutting edge such that it forms a back clearance angle of more than 90° in a feed direction; positioning all parts of the turning insert ahead of the nose cutting edge in the feed direction; rotating the metal work piece around a rotational axis in a first direction; and moving the turning insert in a direction parallel to or at an angle less than 45° relative to the rotational axis, such that the surface at least partly is formed by the nose cutting edge.

Abstract: A lathe (1) with a simple construction that is capable of making the relative displacement of a headstock (2) and tool rest (3) due to thermal deformation smaller. The lathe (1) comprises: a head including a headstock attaching section (51), and a slide attaching section (52) which has a portion with a height lower than the headstock attaching section; a headstock (2) attached to the headstock attaching section (51); a slide section (6) attached to the slide attaching section (52); and a tool rest (2) provided laterally to the headstock (3) and attached to the slide section (6). The headstock (2) is attached to the headstock attaching section (51) slanted to the tool rest side with respect to the direction in which the headstock (2) and the tool rest (3) are lined up.

Abstract: A cutting insert has a cutting edge having a first corner cutting edge, a flat cutting edge, a connecting edge, a major cutting edge, and a second corner cutting edge in the order named. The major cutting edge has an upwardly protruding curvilinear portion, a first straight line portion extending from the curvilinear portion toward the connecting edge, and a second straight line portion extending from the curvilinear portion toward the second corner cutting edge. The flat cutting edge and the major cutting edge have a straight line shape, and the connecting edge has an outwardly protruding curvilinear shape in a top view. The flat cutting edge, the connecting edge, and the first straight line portion are located on a straight line in a side view.

Abstract: A swiss insert includes a chip former arrangement. The chip former arrangement includes a ridge separated on each side from a cutting edge's sub-edge by a chip surface. In a side view, each sub-edge extends in a straight line.

Abstract: An apparatus for cutting pipes internally includes at least one cutting member, at least one drive member, at least one feed member, and at least one clamping member. The at least one cutting member cuts a pipe internally. The at least one drive member rotates the at least one cutting member to cut the pipe internally. The at least one feed member extend the at least one cutting member against the pipe internally and retracts the at least one cutting member from the pipe internally. The at least one clamping member secures the apparatus to the pipe internally.

Abstract: The finishing part (4) of this helical broach (1) is formed by a first shell (20) and a second shell (30) which are divided in the axial direction, and is obtained by forming a first finishing blade (50), which comprises a prescribed gear tooth helix angle (?) end a first blade groove helix angle (?1), on the aforementioned first shell (20) and forming a second finishing blade (60), which comprises the aforementioned prescribed gear tooth helix angle (?) and a second blade groove helix angle (?2) which differs from the aforementioned first blade groove helix angle (?1), on the aforementioned second shell (30).

Abstract: A cutting insert (100, 100?) includes a body (102) having a top face (104), a bottom face (106) opposite the top face (104), and at least one flank face (108, 110, 112, 114). A coolant inlet aperture (126), a coolant outlet aperture (132, 134), and an internal coolant passage (128, 130) in fluid communication with the coolant inlet aperture (126) and the coolant outlet aperture (132, 134) are formed using electro-magnetic radiation. The coolant inlet aperture (126) can be formed in the top face (104), the bottom face (106) and/or the flank face (108, 110, 112, 114), and the coolant outlet aperture (132, 134) can be formed in any different face (104, 106, 108, 110, 112, 114). A method of forming the internal coolant passages (128, 130) is described.

Abstract: A cooling medium accumulation part is integrally formed with a spindle housing and an attaching section between the spindle housing and the attaching section so that at least a width of the cooling medium accumulation part in a direction perpendicular to the spindle is wider than a width of the motor accommodation section in a virtual projection plane obtained by projecting the cooling medium accumulation part in a direction from the spindle housing to the attaching section. A straight oil supply through-holes communicating the cooling medium accumulation part and the cooling passages are formed in a side wall part of the spindle housing.

Abstract: A cutting insert mounting system adapted for a cutting tool in which, by using a tightening screw, a cutting insert is detachably mounted on an insert mounting seat. A central axis of a screw hole of the insert mounting seat is inclined with respect to a normal direction of a bottom wall surface of the insert mounting seat. When the cutting insert is placed on the insert mounting seat, on a virtual plane defined to expand the bottom wall surface, a central axis of the screw hole is shifted from the central axis of a through hole of the cutting insert to the side of one of two side wall surfaces of the insert mounting seat. On the virtual plane, an axis shift direction of the central axis of the screw hole and an inclination direction of the central axis of the screw hole are different.

Abstract: A cutting insert includes a first surface and a second surface each of which is polygonal and that face away from each other; a side surface that is continuous with the first surface and a side surface that is continuous with the second surface; a cutting edge formed along each of a ridge where the first surface and the side surface intersect and a ridge where the second surface and the side surface intersect; a bearing surface formed in each of a part the first surface and a part of the second surface adjacent to an insert center, the bearing surfaces disposed parallel to each other; and a recessed portion that separates the side surface that is continuous with the first surface from the side surface that is continuous with the second surface. The cutting edge includes three corner edges, a first cutting edge, and a second cutting edge, the first and second cutting edges being continuous with each other and located between each pair of the corner edges.

Abstract: A milling burr for use in handheld machines has a shank and a cutting member of hard metal which is rigidly connected to said shank. The cutting member is provided with cutting teeth which extend in a first direction of twist. The cutting teeth are divided in cutting tooth portions by rows of tooth dividers extending in a second direction of twist. The cutting tooth portions and the tooth dividers are arranged one behind the other when seen in the peripheral direction in such a way that an overlap occurs in an in each case alternating manner when seen in the peripheral direction.

Abstract: A face mill includes a circular arc profile and is configured for machining Inconel. In particular the cutting portion is made of a ceramic material, and has an axial sub-edge with a positive axial rake angle ? to increase tool life.

Abstract: Embodiments of the present disclosure provide surface treatment tools, methodologies, and/or treated turbomachine components. A surface treatment tool according to the present disclosure can include a lathe assembly having a lathe chuck for receiving a component thereon, wherein the lathe chuck rotates the component about a first axis of rotation, and wherein the component includes an exposed axial target surface; and a sander or burnishing tool coupled to the lathe assembly and including a sanding or burnishing surface thereon, coupled to a drive system, wherein the sanding or burnishing surface is oriented along a second axis substantially non-parallel with the first axis of rotation, such that the sanding or burnishing surface selectively contacts the target surface of the component to yield a polished target surface.

Abstract: A cutting tool assembly has a cutter body, a clamp pin, a cutting insert and a set screw. The clamp pin is inserted to the cutter body to secure the cutting insert to an insert pocket. The set screw is fastened to a threaded hole of the cutter body to press the clamp pin toward the insert pocket. A side surface of the cutting insert contacts a side wall of the insert pocket at a first contact portion. A head of the clamp pin contact an inner peripheral surface of a bore of the cutting insert at a second contact portion. The first and second contact portions are located such that a moment acts on the cutting insert toward the base wall of the insert pocket around the first contact portion.

Abstract: The present invention provides a more practical hard-coated cutting tool having improved cutting performance during finishing so as to obtain a better finished surface. Provided is a hard-coated cutting tool including a tool body (7) coated with a hard coating (4) and having a cutting edge (3) formed on a ridge line intersecting a flank face (1) and a rake face (2). In the hard-coated cutting tool, the thickness h1 of the hard coating (4) on the flank face (1) side and the thickness h2 of the hard coating (4) on the rake face (2) side near the cutting edge (3) satisfies conditions 8 ?m?h1?30 ?m and 0?h2/h1?0.5 in a cross-section perpendicular to the cutting edge (3) in a range equal to or less than 0.3 times the tool diameter in the axial direction from the tip of the tool.