Abstract: A rotary tapered tool holder includes a body and an adapter sleeve disposed about a portion of the body. The body and the adapter sleeve have front and rear contact surfaces with different taper angles. The front contact surfaces are optimized for an interference fit and the rear contact surfaces provide an axial stop and support band when the tool holder is assembled into a clamping receptacle. Face contact is achieved between a flange contact surface of the body and a face contact surface of the clamping receptacle.

Abstract: This application relates to a cutting insert and method for machining a workpiece. This application further relates to a method for the machining of a workpiece using such an indexable insert. In this case, the term “machining” means, among other things, the first-time machining and/or a re-profiling of a wheel or of a brake disc of a wheel set of a railway vehicle. An object of at least one possible embodiment of the present application is to create a cutting insert that is as economical as possible. An additional object of at least one possible embodiment of the present application is the most effective method possible and a lathe tool that is well-suited for the machining of a workpiece, such as for the copy turning and/or for the first-time machining and/or for the re-profiling of a wheel or of a brake disc of a wheel set of a railway vehicle, using a cutting insert described herein.

Abstract: An collet and lock nut assembly includes a collet for receiving a cutting tool shank and a lock nut for creating a gripping force between the collet and the shank. The collet has a nose portion and a body portion separated by an annular groove. The lock nut has a plurality of retention tabs and a corresponding number of clear portions. The collet and lock nut assembly can be easily assembled by inserting at least one retention tab within the groove of the collet, and then applying pressure to the collet such that the remaining retention tabs of the lock nut are received within the groove of the collet to place the assembly in a locked position. The collet and cutting tool shank can be drawn from the tool holder by applying rotational torque to the lock nut. The collet is easily removed from the lock nut by applying pressure in any circumferential, lateral direction against the collet.

Abstract: Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (?Ya,?Yr) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling.

Abstract: A tool shank and a replaceable cutting insert are provided for a rotary cutting tool assembly. The tool shank has a drive surface including a central portion, a first portion of generally planar shape extending away from the central portion and a second portion of generally planar shape extending away from the central portion in a direction generally transverse to a central axis of the tool shank. The replaceable cutting insert has a driven surface including another central portion, a first portion of generally planar shape extending away from the other central portion and a second portion of generally planar shape extending away from the other central portion in a direction generally transverse to a central axis of the insert. The central portion of the driven surface has a curved surface transitioning between the first portion and the second portion of the driven surface.

Abstract: A cutting insert assembly for use in chipforming and material removal wherein the cutting insert assembly is received in a pocket of a cutter body wherein coolant can flow out of a pocket opening contained in the pocket. The cutting insert assembly includes a cutting insert body that presents at least two discrete cutting locations. The cutting insert body contains a coolant entry passage aligned with the pocket opening for coolant to flow through the coolant entry passage. The cutting insert body has a rake surface that contains at least two of the discrete depressions wherein each one of the discrete depressions corresponds to one of the cutting locations. Each one of the discrete depressions extends toward its corresponding cutting location. The assembly includes a diverter that is positioned adjacent to the cutting insert body wherein the diverter has a receiving opening aligned with the coolant entry passage to receive coolant through the coolant entry passage.

Abstract: A tool holder assembly includes a tool holder with a shank and a key slot having a surface with an angled portion that forms a non-zero angle with respect to a longitudinal axis of the tool holder assembly. A clamping mechanism includes a support block, a ball canister including a key, and a lock rod. An interference fit key arrangement is provided between the tool holder and the clamping mechanism by an abutment surface located along the first side wall of the key. The abutment surface contacts the angular portion of the key slot to cause the key slot to undergo elastic deformation and allow simultaneous contact between the abutment surface and the angular portion of the key slot and the second side wall of the key and the second surface of the key slot, thereby providing for an interference fit key arrangement between the tool holder and the clamping mechanism when the tool holder assembly is placed in the locked position.

Abstract: A cutting insert rotated about its axis may be utilized during a metalworking operation and applied against the rotating workpiece to enhance tool performance. A method, including an assembly with a rotatable insert mounted to a toolholder may be utilized to achieve this result.

Abstract: Disclosed is a drilling tool comprising a first drill bit (2) that is provided with at least two forward cutting edges (4, 5) and a second drill bit (3) which encompasses at least two rear cutting edges (6, 7). A cutting groove (8, 9) runs continuously from one respective forward cutting edge (4, 5) to a rear cutting edge (6, 7). Said cutting groove (8, 9) is embodied in an asymmetric manner in an area (A) bordering the forward drill bit (2), in a symmetric manner in a central area (B), and asymmetric in an area (C) bordering the rear drill bit (3).

Abstract: A twist drill or rotary cutting device, in particular a drill, comprising a tool head or cutting insert consisting of a hard cutting material and a tool shaft which clamps the tool head between two clamp extensions that project axially from said tool shaft in such a way that the tool head is interchangeable. In the fixed position, the interconnected clamping surfaces of the tool head and the clamping extensions of the tool shaft lie on the surface of a truncated cone shaped fixing peg running coaxially with the longitudinal axis of the tool shaft. The fixing peg tapers in the insertion direction, facing the chuck end of the tool shaft.

Abstract: A cutting insert has four quadrants defined by vertical and horizontal axes that pass through a centerline axis of the insert. The cutting insert further includes a top surface; a bottom surface; a plurality of clearance side surfaces extending between the top and bottom surfaces. A cutting edge is formed at an intersection between the top surface and the clearance side surfaces. A serration is formed in each clearance side surface such that two of the four quadrants that are diagonally opposite each other do not have serrations, and the other two of the four quadrants that are diagonally opposite each other include a pair of serrations. The cutting insert can be mounted to a milling cutter in a variety of patterns by rotating one cutting insert relative to another cutting insert in the same flute or in a different flute.

Abstract: An axial seating pin contacting and supporting an insert attached to a cutting tool body. The axial seating pin eliminates the need for forming an axial wall on the body of the cutting tool and contributes to the life of the cutting tool by providing a replaceable axial seating pin. The axial seating pin has a shank that slides into an aperture on the tool body and is then held to the body using a fastener.

Abstract: A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and the top surface of the cutting insert. In addition, only a forward lower face of a head portion of the clamp screw engages a top surface of the clamp.

Abstract: A hard metal or cermet body has a 2 to 100 ?m thick first layer having a binder metal proportion of 2 to 25 mass % and up to 25 volume % of a nitride or carbonitride of one or more metals of Group IVa of the periodic system or up to 10 volume % of a carbide or carbonitride of V, Nb, Ta or Cr, balance WC, whereby the amount of nitride, carbonitride or carbide of the afore-mentioned metals amounts to at least 0.01 volume %. Under the first layer is a 2 to 40 ?m thick second layer with an enhanced nitrogen proportion relative to the first layer, is disposed. Thereunder is a transition zone with a thickness of 2 to 100 ?m in which the composition gradually changes to a homogeneous composition in the inner core of the hard metal or cermet body.

Abstract: A drill bit, such as a twist drill, having a body equipped with flutes, as well as a drill bit face that includes two main cutting edges that merge together. In order to drill a blind hole, such as with a level drilled bottom, the main cutting edge forms a continuous cutting edge that runs in a plane perpendicular to the drill bit's longitudinal axis. The main cutting edges, with respect to a cutting direction, are arranged behind a center line lying in the plane which is perpendicular to the longitudinal axis of the drill and extending through the center of the drill as well as in the direction of the main cutting edges.

Abstract: Milling cutter (1), which can rotate about a cutter longitudinal axis (A), comprises a sleeve-shaped shaft (2) provided with an inner lying chip evacuation channel (11), which is arranged, in essence, symmetric to the cutter longitudinal axis (A), and with a suction opening (12). The milling cutter also comprises a milling head (3, 3a, 3b, 3c), which is held coaxial to the cutter longitudinal axis (A) and to the shaft (2) while being held on said shaft and which comprises, as cutting edges (7, 9), a face cutting edge (7) and a peripheral cutting edge (9). At least one cutting edge (7, 9) forms a positive rake angle (?a, ?r) on the periphery of the milling head (3, 3a, 3b, 3c). The milling cutter (1) is particularly suited for machining light metals, especially for circular milling.

Abstract: Cutting tool, such as for end-cut and longitudinal turning, and for cutting grooves in a workpiece, which has an end or major cutting edge and two side or minor cutting edges, each of which are connected to the end or major cutting edge by two outer corners. Additional corner chip-breakers are formed between each of the outer corners and the ends of a chip-guiding rib.

Abstract: A drill bit having a shank portion and a cutting portion, which cutting portion generally has at least one cutting edge and a chip flute that has a helical portion. The drill bit has at least one straight coolant channel that has a coolant exit orifice disposed at least partially in the flute and oriented toward the cutting edges to supply coolant thereto to cool the cutting edges and chips produced during a cutting operation.

Abstract: A drill having a replaceable cutting head, modified to eliminate forces which would distort the pocket of the drill shank and otherwise concentrate stresses which would cause failure of the drill. The cutting head has a frustoconical depending connecting member received in a receptacle formed in the shank. In different embodiments, contact between the pocket formed in the shank and the cutting head connecting member is limited. In one embodiment, angle of drive surfaces is modified from prior art practice. In another embodiment, transition of at curved joints between vertical and horizontal surfaces is made more gradual. The drill preferably has flutes formed collectively by the shank and cutting head when assembled.