Abstract: An electrically-operated chuck opening-closing device includes a chuck that grasps workpiece, a conversion device with a control gear provided to the outer circumference, a drawbar that couples the conversion device and the chuck, a transmission gear provided to a main spindle, a second rotary shaft rotatably pivoted to be parallel to the main spindle, a first gear and a second gear rotatably provided on the second rotary shaft, an auxiliary motor that drives the first gear, a first clutch that can couple and decouple the auxiliary motor and the second rotary shaft, and a second clutch that can couple and decouple the second rotary shaft and the second gear.

Abstract: Feed back vibrations of a metallic tool generated during the machining of metallic workpieces are damped by detecting an oscillatory motion of the tool, identifying a frequency of the oscillatory motion and generating a mechanical camping force having the same frequency as the oscillatory motion and applied to the tool in counter-direction to a velocity of the oscillatory motion. The damping force can be of constant amplitude or gradually decreasing amplitude.

Abstract: A tool and a cutting insert for chip removing machining, such as milling, turning or the like. The cutting insert includes a chip-removing main edge, which is separated from a center of the cutting insert and from which a clearance surface extends toward a transition to an underside in the form of a connecting surface, in which an elongate engagement means, e.g., a ridge, is included, which is situated nearer the transition than the center of the cutting insert, and includes a flank having the purpose of transferring cutting forces in the direction transverse to the length extension of the ridge. The ridge is the only active engagement means of an imaginary triangle between the center of the cutting insert and opposite ends of the transition, besides which the flank has a cross section-wise convex shape. In such a way, the active edge of the cutting insert is located in a desired exact position in relation to the tool, even if the cutting insert is impaired by minor form defects.

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 method and apparatus for cutting moils from necks of molded plastic containers and installing spouts in the necks are disclosed. The apparatus includes a pick and place mechanism that rotates along an arcuate path transporting the containers between a cutting station, a facing station and an assembly station positioned along the path. An oven located above the assembly station heats spouts which are coated with a hot-melt adhesive. The heated spouts are supplied to the assembly station under gravity feed. The method includes cutting the moils from the container necks at the cutting station, finishing the neck by burnishing and reaming at the facing station, heating the spouts in the oven, orienting the spouts and inserting them into the finished necks of the containers at the assembly station.

Abstract: An indexable insert has one or more recesses formed in a frontside or backside surface which receives a surface of the head of a locking screw. When mounted, the insert is forced against respective support surfaces of an insert pocket. The locking screw is threaded into a counterbored tap hole to engage the insert and provide side locating forces and clamping forces to secure the indexable insert in the insert pocket. More particularly, the indexable insert has a shaped surface recess that mates to a complimentarily-shaped surface on the head of a locking screw and secures the indexable insert in multiple dimensions to a seating surface. A material removal tool and a method of mounting the indexable insert are also disclosed.

Abstract: Tube ends such as those of boiler tube banks, are prepared utilizing any of various combinations of processes which include a step of micro-diameter tube film removal from a portion of a tube end, including an area below a beveled segment, or segment to be beveled. The micro-diameter film removal step provides the tube with an exposed, clean metal surface which is conducive to a subsequent welding or bonding operation performed on the tube. Preferably, the process is performed with a tube milling tool having interchangeable milling or cutting heads. A specialized milling head is also disclosed and, in one embodiment, is at least used to perform the micro-diameter tube film removal step. Advantageously, the tube film removal milling head also removes a weld overlay on one or both sides of a tube in one embodiment. The tube film removal milling head includes an attached blade having a planar face configuration which enables tube film removal.

Abstract: An apparatus for paring tubular articles (R), especially for plastic tubes, has at least one support unit (10) for supporting the article (R) to be pared, a paring unit (40) which has a paring head (44) with at least one blade assembly (46) and at least one guide assembly (48), and a carrier unit (70) to which the support unit (10) and the paring head unit (40) are held in mutually spaced relationship. The paring head (44) is pivotable about a pivot axis (50) which extends at least approximately perpendicularly to the plane defined by the support unit (10) and the paring unit (40).

Abstract: A cutting insert for milling operations, such as, face milling, slot milling, plunge milling, and ramping operations. The cutting insert exhibits a combination of favorable cutting edge strength, and unique cutting edge geometry, thus, allowing milling operations at relatively high feed rates. The cutting insert includes at least four cutting edges, wherein at least one of the cutting edges is a convex cutting edge. Certain embodiments of square cutting inserts will have four convex cutting edges which may be connected by nose corners. The convex cutting edge may comprise at least one of a circular arc, a portion of an ellipse, a portion of a parabola, a multi-segment spline curve, a straight line, or combinations of these. Wherein the convex cutting edge comprises a circular arc, the circular arc may have a radius greater than or equal to two times a radius of the largest circle that may be inscribed on the top surface.

Abstract: An end mill has a plurality of quick change insert holders for cutter inserts on machine tools. Each of the plurality of quick change tool holders comprises a housing having at least one seat portion which is adapted to receive a cutter insert. A clamping arm is movably mounted in the insert housing and has a clamp portion adapted to engage a cutter insert extending over the seat portion. A locking mechanism is contained within the housing. The locking mechanism has a clamp position which forces the clamp portion of the clamping arm to engage a cutter insert and a release position which forces the clamp portion to disengage from a cutter insert. The locking mechanism moves between the release position and the clamp position.

Abstract: An exemplary machining method used to machine a predetermined curved surface on a workpiece (46) comprising: (1) providing a machining apparatus (30), the machining apparatus including a vertical tool spindle (40) for mounting a tool (42) and a workpiece spindle (44) being rotatable in an axis thereof, the tool spindle being rotatable relative to a vertical direction, a rotational axis of the workpiece spindle is oblique relative to a rotational axis of the tool spindle; (2) mounting the workpiece onto the workpiece spindle; (3) driving the spindle and the workpiece spindle to rotate, and positioning the tool corresponding to the workpiece; and (4) driving a machining point of the tool to move on the predetermined curved surface and along a path passing through a top point “P” and any point “Q” of an edge of the predetermined curved surface.

Abstract: In a steady rest (1) with three holding elements (5, 6, 7), of which the two outer holding elements (6, 7) can be swivelled about articulated pins (8, 9) mounted in a housing (2) and the middle holding element (5) can be adjusted in a straight line, with one chip protection cap (11, 12) each provided with outlet ducts attached to one or both outer holding elements (6, 7) and with the possibility of supplying cooling or rinsing agent in a controlled fashion via ducts (13, 15) worked into the holding elements (6, 7) for application to the workpiece (10), each of the ducts (13, 15) provided in the outer holding elements (6, 7) is directly connected to a duct (27) running in the housing (2) of the steady rest (1) via kidney-shaped openings (21, 22) running concentrically to the articulated pins (8, 9).

Abstract: In a surface-coated cutting tool, (a) a Ti compound layer as a lower layer and (b) an ?-type Al2O3 layer as an upper layer having a crystal grain structure of an even polygonal shape (including an even hexagonal shape) and an elongate shape and containing Zr are deposited on the surface of a tool substrate. In the surface-coated cutting tool, the above mentioned crystal grains of which insides are divided by at least one crystal lattice interface with the constituent atom covalent lattice point type expressed by ?3 occupying 60% or more as an area ratio in the crystal grains of the upper layer.

Abstract: An indexable cutting insert has at least first and second cutting edges and first and second edge-location surfaces associated with the first and second cutting edges, respectively. The insert-manufacturing procedure includes forming the first edge-location surface with reference to the first cutting edge, and then forming the second edge-location surface with reference to the second cutting edge. There results an indexable cutting insert having at least two spaced-apart chip-removing cutting edges and a plurality of location surfaces adapted to engage a base body for determining the spatial positions of respective cutting edges, wherein each location surface determines the spatial position of no more than one of the cutting edges.

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: A tool assembly for a thermoforming machine has a tool holder having an abutment face and a tool having an abutment part. The tool and holder have a groove and a rail fittable in the groove for fitting the tool to the holder into a working position with the abutment part abutting the abutment face. A part-conical seat centered on a tool axis is formed on the tool. A pin formed with a part-conical head face complementary to the seat and centered on a pin axis is carried on the holder. The seat and head are positioned on the tool and holder such that in the working position the axes are generally parallel but slightly offset from each other and the part-conical head face is axially engageable with the seat.

Abstract: The invention relates to a cutting tool of the type that comprises, on one hand, a basic body (1) having an insert seat, and on the other hand a cutting insert (2), which is detachably connected in the insert seat and rigidly secured in the same by means of connecting surfaces (3, 5) of serration type, one (3) of which forms said insert seat and comprises first and second ridges (18, 19), which extends perpendicularly to each other. According to the invention, at least the connecting surface that forms the insert seat (3) is formed with, on one hand, two spaced-apart surface fields or sets of a plurality of mutually parallel, first ridges (18A, 18B), which are arranged in extension of each other, and on the other hand one or more second, transverse ridges (19), which are located between the two sets of first ridges (18A, 18B). Furthermore, the invention also relates to a basic body of a cutting tool, as well as a cutting insert as such.

Abstract: A tool holder positioning device includes: a plurality of protruded portions or a plurality of recessed portions formed to a seating surface of a tool rest; and a plurality of recessed portions or a plurality of protruded portions formed to a coupling surface of a tool holder so as to correspond, respectively, to a plurality of protruded portions or a plurality of recessed portions formed to the seating surface of the tool rest, when the seating surface and the coupling surface are contacted. At least one of the protruded portions and at least one of the recessed portions are disposed on an intersecting axis included in the seating surface, and the recessed portions and the protruded portions to be fitted to the plurality of protruded portions and the plurality of recessed portions are disposed on an intersecting axis included in the coupling surface.

Abstract: The present invention provides a tool holder interchangeably attached to a machine tool such as a combined machining lathe. A combined machining lathe 1 comprises main spindles 20 and 30 for gripping a workpiece, and a machining main spindle head 50 which rotates around a B axis. There are provided stockers S1 and S2 inside the lathe, and tool holders 200 and 300 are respectively stored in the stockers S1 and S2. The tool holder 200 comprises a taper shank portion 230 of a main shaft in a housing 210 and four pull studs PS2 around the taper shank portion 230 of a main shaft, and is gripped by collet chucks of the machining main spindle head 50. Rotation of the taper shank portion 230 of a main shaft is transmitted to a shaft 250 via a gear mechanism, to drive a drill tool 252 to drill a deep hole.