Abstract: A milling insert includes a first axial face, a second axial face, a first radial face, a second radial face parallel with the first radial face, a cutting face, and a generally V-shaped seating face formed with a first seating surface and a second seating surface. The first axial face defines a secondary clearance surface that is at least partially axially recessed from the first axial face and oblique to the first radial face. The first seating surface and the second seating surface are formed at an angle substantially equal to a radial rake angle when the cutting insert is mounted in the insert seat of the milling cutter. As a result, the seating face produces at least one seating surface that is substantially perpendicular to the tangential cutting force, FT, thereby reducing movement of the insert when tangentially mounted in the insert seat of the milling cutter.

Abstract: A milling insert for shoulder milling having s a positive basic shape and includes an upper side having a rake surface, a lower side including a planar bottom surface, a side surface extending around the periphery of the milling insert, and a cutting edge formed between the side surface and the rake surface. The cutting edge has at least a major cutting edge portion, a corner radius cutting edge portion, a ramping cutting edge portion, and a surface wiping cutting edge portion. The side surface includes an upper set of primary clearance surfaces and a lower set of secondary clearance surfaces having a plurality of planar secondary clearance surfaces, wherein the upper set of primary clearance surfaces forms an overhang protruding with respect to the secondary clearance surfaces and extending around the entire upper periphery of the milling insert.

Abstract: Provided is a cutting tool that simultaneously improves both fracture resistance and wear resistance. The cutting tool according to the present invention has an end surface, a peripheral side surface intersecting with the end surface, and a cutting edge in an intersecting ridge part along the end surface and the peripheral side surface, and when first and second points A and B are defined on the cutting edge, the first point A protrudes further toward an outer side of the cutting tool than the second point B. The cutting edge has a honing surface. The honing surface has a portion, the width of which gradually increases from the first point A toward the second point B.

Abstract: A broaching tool is held during the conduct of repetitive duplicate rotary broaching operations on serially presented workpieces. The broaching tool is engaged serially with each workpiece for rotation with the engaged workpiece during a corresponding rotary broaching operation. Each workpiece has a given configuration and the broaching tool has a prescribed configuration placed at an initial orientation for establishing a broached configuration placed at a same predetermined orientation relative to the given configuration of each workpiece. Upon completion of a rotary broaching operation on a workpiece, the broaching tool is returned to the initial orientation of the prescribed configuration in preparation for a duplicate rotary broaching operation on a subsequent serially presented workpiece.

Abstract: A cutting tool having a cutting edge member which forms at least one corner part, wherein a material for the cutting edge member is selected from either diamond, an ultrahigh-pressure sintered body containing cubic boron nitride or a PVD or CVD coating applied to a surface of the ultrahigh-pressure sintered body. At least part of an intersecting edge between an end surface of the cutting edge member and a peripheral side surface thereof is provided with a cutting edge. A chip breaker comprising a breaker wall surface is formed in the end surface of the cutting edge member. The breaker wall surface has at least one projected surface part which bulges outwardly from the cutting tool. As viewed from the end surface, the recessed surface part is arranged so as to be apart from a virtual plane A which is defined so as to divide the corner part into halves.

Abstract: In the ball end mill, at least two end cutting edges are extended to the vicinity of an axis at a tip portion of an end mill main body which rotates around the axis. In two gashes in which two end cutting edges adjacent to each other in a circumferential direction are formed, a first gash on the end mill rotation direction side extends beyond the axis on the tip of the end mill main body and a second gash on the rear side in the end mill rotation direction does not exceed the axis. A first tip flank face which intersects with the first gash through a first end cutting edge is extended toward a second tip flank face which intersects with the second gash through a second end cutting edge.

Abstract: A power tool including a motor and a rotatable spindle driven by the motor to hold and drive a first bit. There is a recess located on the spindle. The power tool also includes a removable chuck with a lock member and a locking collar. The locking collar includes a locking position in which the locking collar biases the lock member into the recess to retain the chuck on the spindle. The locking collar also includes a release position in which the lock members are able to exit the recess and the chuck is able to be removed from the spindle by a user. The locking collar is axially movable from the locking position to the release position.

Abstract: In an embodiment, a cutting insert includes a body member and a cutting member. The body member is a columnar body, and includes: an upper surface; a lower surface; and an outer side surface between the upper surface and the lower surface. The cutting member is located at a corner part of the outer side surface in the body member. The cutting member includes: at least three surfaces being exposed; and a cutting edge at an intersecting portion of two of the at least three surfaces. The body member includes a through hole penetrating through the upper surface and the lower surface.

Abstract: A high-precision wheel rim burr removing device is composed of a rack, a base, longitudinal guide rails, a longitudinal servo motor, a first ball screw, a longitudinal moving plate, a transverse servo motor, transverse guide rails, a second ball screw and the like. A wheel is initially positioned and clamped by adopting the central hole, then the coaxiality deviation of the center hole and cap sections is eliminated, and the rotating center of the burr part of the outer rim is superposed with the rotating centers of cutters, so that high-precision burr removal is realized. The device has the characteristics of advanced process, stability, high efficiency, high degree of automation and the like.

Abstract: A tool coupling used for a clamping connection between two coupling parts, in particular between a cutting head and a carrier of a rotary tool, in particular of a drill. The coupling parts comprise clamping sections, which respectively correspond to one another and which can be clamped against each other by turning counter to a predefined direction of rotation about an axis of rotation so that a press fit is produced. In order to produce a high clamping force and at the same time allow for a simple installation via screwing in, each clamping section comprises several successive clamping surfaces which—with respect to a cross section viewed orthogonally to the axial direction—respectively travel along a circular arc, wherein the diameter increases for clamping surfaces succeeding one another in the direction of rotation.

Abstract: The invention provides a machine tool capable of facilitating a process of switching product ejecting apparatuses. The machine tool comprises a spindle which rotates a workpiece around an axis of the spindle, an actuator which reciprocates a rod arranged parallel to the axis of the spindle, and a coupler switched between a coupling position and a standby position. The coupler connects the rod and an ejecting shaft inserted in the spindle when held in the coupling position. The coupler is not connected to at least the ejecting shaft when held in the standby position. The ejecting shaft along with the coupler is moved in the direction of the axis of the spindle according to reciprocation of the rod when the coupler is held in the coupling position.

Abstract: A cutting tool has a holder and an indexable cutting insert secured therein. The holder has a head and a shank extending therefrom along a holder axis, the head having spaced apart lower and upper clamping portions located on opposite sides of a first plane containing the holder axis. The lower clamping portion has spaced apart first and second lower clamping surfaces located on opposite sides of a second plane perpendicular to the first plane, and the upper clamping portion has an upper clamping surface intersected by the second plane. The cutting insert has a peripheral surface with a plurality of circumferentially spaced cutting portions, and the second plane intersects the plurality of cutting portions. The upper clamping surface makes contact with a first abutment portion of the peripheral surface, and a second abutment portion of the peripheral surface makes contact with the first and second lower clamping surfaces.

Abstract: There is described a facing accessory for a portable boring apparatus, the accessory comprising: a shaft mounting portion for mounting to a longitudinal shaft of the portable boring apparatus extending along a longitudinal axis; a tool holder secured to the shaft mounting portion and adapted to receive a facing tool thereon, the tool holder comprising at least a telescopic arm for enabling movement of the facing tool towards and away from the shaft mounting portion along a radial axis relative to the longitudinal shaft; and an actuator operatively connected to the second section of the telescopic section for translating the second section relative to the first section along the radial axis.

Abstract: A machining system includes a robot arm for changing a workpiece or inspecting a machined workpiece, and a probe that is attached to a distal end portion of the robot arm via a force sensor, where the robot arm is controlled such that the probe is arranged at a predetermined measurement position in contact with a side surface of a tool holder, where detection values of the force sensor are obtained over a predetermined period of time in a state where a main spindle is performing rotation operation, where an attached state of the tool holder is determined based on the detection values obtained over the predetermined period of time.

Abstract: A general purpose hole saw guide and a method of forming holes through surfaces, without the need of a centering bit, are provided. The hole saw guide includes a circular disk with concentric grooves on its surface. The disk is transparent and portable for placement on a surface through which a hole is to be drilled to facilitate the centering and stabilizing control of a hole saw on the surface. The method includes the steps of providing a transparent disk having concentric grooves; positioning the disk on a surface; mounting the disk to the surface; inserting a hole saw that is fitted to a drill into the grooves of the disk; drilling a hole through the disk and surface beneath it; and removing the disk from the surface after the hole has been drilled.

Abstract: A tool body having an insert seat and a cutting tool which allow a cutting insert to be stably held are provided. A tool body according to the present invention is a tool body having an insert seat for mounting a cutting insert on the tool body, wherein the insert seat has a base surface and a side wall surface which extends so as to intersect with the base surface. The base surface has a contact surface and a contact projected part which come into contact with the cutting insert. A contact part of the contact surface is comprised of a surface, and a contact part of the contact projected part has a linear shape or a point shape.

Abstract: A rotary cutting tool having an axis of rotation, a shank area, and a cutting area. The rotary tool has chip flutes reaching as far as a core profile in the cutting area. In order to reduce vibrations of the rotary cutting tool and therefore to permit precise machining and high surface quality with long service lives, the center line of the core profile has a course that deviates from the axis of rotation of the rotary cutting tool and/or the core profile contains mutually alternating sections with increasing cross-sectional area and sections with decreasing cross-sectional area over the length of the cutting area.

Abstract: A blade-shaped cutting insert has opposing first and second insert side surfaces with a peripheral surface extending therebetween, and a first cutting portion having a first primary cutting edge extending between the first and second insert side surfaces, defining a maximum insert width of the cutting insert. The peripheral surface includes an upper surface and first and second diverging flank surfaces bisected by a first plane transverse to the upper surface. The cutting insert has a maximum insert length measured perpendicular to the first plane which is more than sixteen times greater than the maximum insert width, and a maximum insert height measured parallel to the first plane which is more than ten times greater than the maximum insert width. The cutting insert is removably secured in an insert receiving pocket of a tool holder, which is defined by an upper clamping jaw and a lower clamping jaw.

Abstract: A drill is provided with a body having a rod shape configured to rotate about a rotational axis, a cutting edge that is located at a tip portion of the body and extends from an outer periphery of the body toward the rotational axis when viewed from the tip portion, a flank located at the tip portion and disposed along the cutting edge, a covering layer that covers at least the tip portion of the body, and one or more recessed portions disposed on the flank at positions close to the cutting edge.

Abstract: A cutting insert has opposing first and second end surfaces, and a peripheral side surface (connecting the end surfaces. A central axis penetrates the two end surfaces. The peripheral sure surface includes an outwardly inclined first side surface part related to a major cutting edge and a second side surface part related to a minor cutting edge. The outwardly inclined first side surface part gradually extends outward from the cutting insert, heading from the first end surface to the second end surface. When a second virtual plane, which is substantially perpendicular to the central axis and passes through the major cutting edge, is defined, an inwardly inclined part, on a back side of the cutting edge, of the second end surface is inclined so as to become more distant from the second virtual plane, heading from the outwardly inclined first side surface part to the central axis.