Clamping device having a receiving opening which is arranged concentrically to a workpiece spindle axis, wherein the clamping device is designed for clamping a gear workpiece comprising a head region and a shaft, the clamping device comprises an annular planar contact surface, which is arranged concentrically to the workpiece spindle axis, is located in a workpiece-side end region of the clamping device, and which extends essentially perpendicular to the workpiece spindle axis, wherein at least one circumferential groove is provided in the workpiece-side end region, which groove extends from an outer surface of the clamping device radially in the direction of the workpiece spindle axis and which provides the clamping device with elasticity in the region of the planar contact surface.

A hole saw includes a substantially cylindrical body defining a cutting end and an axis of rotation. The hole saw also includes first and second apertures formed through the body and spaced from the cutting end such that a portion of the body extends between the cutting end and both the first and second apertures. The first and second apertures are both configured to receive a tool for removing work piece plugs from within the cylindrical body. The first aperture is axially spaced from the cutting end a first distance. The second aperture is axially spaced from the cutting end a second distance that is greater than the first distance. The first aperture and the second aperture are separated by a portion of the body.

A hole saw is movable about a rotational axis in a cutting direction to cut into a workpiece. The hole saw includes a cylindrical body having a sidewall with a first end and a second end opposite the first end. The cylindrical body also includes a gullet formed in the sidewall between a leading surface, a trailing surface, and a bottom surface of the sidewall. The trailing surface defines a portion having a first radius. The bottom surface has a second radius. The first radius is larger than the second radius. The hole saw also includes a cutting tooth coupled to the first end of the sidewall adjacent the gullet.

The present disclosure reduces equipment failures, decreases maintenance frequency, and stabilizes cutting operation. Specifically, a holder (5) includes a fitting surface (52) capable of fitting a distal end (2a) of an electrode tip (2). A cutting member (6) having a cutting blade (6b) is attached to the holder (5) and the cutting blade (6b) cuts the distal end (2a) of the electrode tip (2) by rotating the holder (5). On the fitting surface (52), a plurality of grooves (52a) extending arcuately around the rotation axis (C1) as the center thereof are consecutively formed adjacent to each other toward the rotation axis (C1).

A hole saw including a cylindrical body with an outer wall extending along an axis of rotation from a cap end to a cutting end. The cutting end includes a plurality of cutting teeth disposed continuously around a circumference of the cutting end. The hole saw includes at least one elongated aperture disposed along the outer wall of the cylindrical body that is configured to receive a tool for removing one or more plugs from within the cylindrical body. The at least one elongated aperture has a first slot portion disposed adjacent to the cutting end and substantially parallel to the cap end, a second slot portion connected to the first slot portion at a first end of the second slot portion, and a third slot portion coupled to the second slot portion at a second end of the second slot portion opposite the first end.

A cutting tool includes a tool holding system having a clamping portion. The clamping portion includes an integrally formed one-piece inner coupling member that at least partially forms a clamping sleeve portion having a clamping bore for clampingly receiving a cutting insert. The clamping portion also includes an integrally formed one-piece outer coupling member that is circumferentially disposed about at least a portion of the inner coupling member. The tool holding system also has a mounting portion that is connected to one of the inner and outer coupling members. The inner and outer coupling members are captively and non-releasably engaged with each other via inter-engaged first and second engagement surfaces that are slidingly displaceable with respect to each other.

A hole saw includes a substantially cylindrical body defining a cutting end and an axis of rotation. The hole saw also includes first and second apertures formed through the body and spaced from the cutting end such that a portion of the body extends between the cutting end and both the first and second apertures. The first and second apertures are both configured to receive a tool for removing work piece plugs from within the cylindrical body. The first aperture is axially spaced from the cutting end a first distance. The second aperture is axially spaced from the cutting end a second distance that is greater than the first distance. The first aperture and the second aperture are separated by a portion of the body.

The present disclosure relates to a tool having a holder body, a cutting insert and a nozzle. The nozzle includes a single through hole for a fastening member. The nozzle has a forward end, a rear end and a bottom face. The through hole extends between the bottom face and an opposite top face. At least one internal coolant channel is provided in the nozzle and extends from a first opening to a second opening. The first opening connects to a coolant supply conduit in the holder body. The second opening serves as an exit for the coolant at the forward end. The at least one coolant channel and the first opening are spaced from the through hole.

A cutting tool comprises at least one cutting edge and at least one relief surface adjacent thereto. The relief surface is arranged to provide clearance behind the cutting edge between the cutting tool and a workpiece and comprises one or more grooves arranged to communicate, in use, a cutting media across the relief surface.

A hole saw includes a substantially cylindrical body defining a cutting end and an axis of rotation. The hole saw also includes first and second apertures formed through the body and spaced from the cutting end such that a portion of the body extends between the cutting end and both the first and second apertures. The first and second apertures are both configured to receive a tool for removing work piece plugs from within the cylindrical body. The first aperture is axially spaced from the cutting end a first distance. The second aperture is axially spaced from the cutting end a second distance that is greater than the first distance. The first aperture and the second aperture are separated by a portion of the body.