A cutting tool fastener having a rotation axis and configured to secure together, and establish a fluid path between, two cutting tool members, while also accommodating angular and pivotal displacement between the two. The fastener comprising a head with at least one head opening for emitting fluid, and a body which extends from the head and has a body opening for receiving fluid to be emitted via the head opening. The head has a spherical head abutment surface with a bottom spherical seal surface zone. At least a portion of the spherical head abutment surface faces the body, and the head opening opens out to the spherical head abutment surface. The bottom spherical seal surface zone is axially located between the body and the head opening.

A cutting tool is configured as follows: a slit is provided rearward of a space between an upper jaw and a lower jaw; an insert held between the two jaws is clamped by screwing a threaded member having a head so as to deform the upper jaw toward the lower jaw; and the threaded member has a hollow shaft structure with its hollow serving as a coolant channel, whereby use of an elastic seal is not required, and coolant is supplied from an internal upper-jaw channel and an internal lower-jaw channel provided in the jaws. A vertical hole having a bearing surface 65 extends through a region of a holder 10 located at a lower jaw 30 side; a threaded hole 80 extends through a region of the holder 10 located at an upper jaw 20 side; a large-diameter hole 60 in the form of the vertical hole has a coolant inlet 35 of an internal lower-jaw channel 35; and the threaded hole 80 has a coolant inlet 25a of an internal upper-law channel 25 provided at a vertically intermediate position. A threaded member 70 has a hollow 77 that opens at the rear end of a head 71 and is closed at a front end 78 thereof, has branch holes 75 provided at an intermediate position of a threaded shaft 73 and communicating with the outer circumferential surface thereof, and has a screw-driving portion 79 provided in the front end 78 and adapted to tighten, for clamping, the threaded member 70 screwed into the threaded hole 80 from the large-diameter hole 60.

A method for cutting an inner circumferential surface of a rotating hollow cylindrical workpiece includes: holding the workpiece with a chucking device such that a side surface of the workpiece on a first side in an axial direction of the workpiece is in contact with a contact surface of the chucking device; setting an intersection angle between a rotational center line of the workpiece and an imaginary straight line to an angle smaller than 45 degrees, the straight line being parallel to an axis line of a button tip and intersecting with the rotational center line; and setting a feed direction of the button tip to the inner circumferential surface to a direction from a second side in the axial direction of the workpiece toward the first side in the axial direction thereof, and cutting the inner circumferential surface by use of the button tip rotating about the axis line.

A swiss turning tool assembly includes an insert and a tool holder. The tool holder includes a head portion which in turn includes an insert pocket and a fastener hole opening out to a flank side of the tool and to a pocket opening in the insert pocket. The insert pocket also includes a tool clamping arrangement which in turn includes a tool base surface and at least one tool abutment surface forming an external acute angle with the tool base surface. The insert includes an insert base surface which in turn includes at least one insert abutment surface forming an internal acute angle with the insert base surface. To achieve a clamped position, a single fastener, accessed from the tool's flank side abuts the insert.

A cutting tool includes a base body and a cutting head at least partially disposed within a modular pocket of the base body. The modular pocket is formed by at least one wall section removably attached to the base body. In one variation, a non-removable portion of the base body also forms part of the modular pocket. In another variation, the modular pocket is formed by two removable wall sections on opposite sides of the modular pocket. In yet another variation, the removable wall sections include a clamping portion to exert a downward force on the cutting head to enable mounting the cutting head in the modular pocket using an interference fit.

A swiss turning tool assembly includes an insert and a tool holder. The tool holder includes a head portion which in turn includes an insert pocket and a fastener hole opening out to a flank side of the tool and to a pocket opening in the insert pocket. The insert pocket also includes a tool clamping arrangement which in turn includes a tool base surface and at least one tool abutment surface forming an external acute angle with the tool base surface. The insert includes an insert base surface which in turn includes at least one insert abutment surface forming an internal acute angle with the insert base surface. To achieve a clamped position, a single fastener, accessed from the tool's flank side abuts the insert.

A holder for a tool for machining a workpiece, wherein the holder comprises a cutting insert receptacle in the region of its front end for receiving a cutting insert and a clamping portion in the region of its opposite rear end for clamping the holder in a machine tool. The cutting insert receptacle comprises an upper and a lower clamping jaw, wherein the holder comprises an upper part on which the upper clamping jaw is arranged, and a lower part on which the lower clamping jaw is arranged. The upper and the lower parts are connected together exclusively by means of a web which extends between a first and a second separating slit, wherein the two separating slits extend between the upper part and the lower part of the holder and are arranged on opposite sides of the web such that the upper part is pivotable relative to the lower part via the web in the manner of a rocker. The first separating slit extends in a front holder region between the cutting insert receptacle and the web. The second separating slit extends in a central holder region between the web and the clamping portion. The holder further comprises an actuating means which cooperates with the upper part in the central holder region and is configured to spread the second separating slit in order to move the upper clamping jaw toward the lower clamping jaw and to clamp the cutting insert between the upper and the lower clamping jaws.

A cutting tool holder of the kind in which the fastening screw (securing member) remains engaged with the tool holder seat during mounting/dismounting of the cutting insert. The seat is further formed with a support surface configured for engaging and providing support to the head portion of the securing member at least in the securing position.

A cutting device in accordance with some example embodiments is provided for use with an arbor assembly. The cutting device includes a blade having a plurality of teeth, and a back plate at a proximal end of the blade. The back plate has an outer end surface in which a plurality of ramp surfaces and pin locking recess are provided. A central through hole extending through the back plate. The ramp surfaces only allow the cutting device to be rotated relative to the arbor assembly in one direction.

A cutting tool body is configured for securing a cutting insert with a female thread. The cutting tool body includes a machining end and a tool peripheral surface which extends therefrom. The cutting tool body further includes a through, non-threaded tool coupling bore which opens out to the tool peripheral surface and a coupling screw which has a coupling screw thread. The coupling screw is being located in the tool coupling bore and configured to secure the cutting insert. The cutting tool body further includes a holding member which engages the coupling screw thread at least when the holding member is not in contact with the cutting insert.