A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

An integrated drill chuck for installing mine roof bolts includes a single integrated piece, the single integrated piece including a body defining a receiving cavity, where the receiving cavity is configured to receive and secure a bit having a square-shaped end and a bit having a hex-shaped end. A drill for installing mine roof bolts is also disclosed. A method for installing mine roof bolts is also disclosed.

A device for the quick change of tool holder adapters, especially for use on CNC machine tools such as multi-spindle or single-spindle lathes, turning and milling centres, transfer machine tools, for orienting and clamping the different tool holder shanks in the appropriate seats of the rotating and non-rotating shafts present in the mechanical bodies such as motorised or non-motorised tool holders, multiple or single, comprising a tool holder shank of truncated-cone shape designed to fit, starting from its smaller diameter rear part, into a complementary housing made in the rotating shaft of a motorised module. On the smaller diameter rear face of the tool holder shank a milling cut is made configured to accommodate at least one removable insert which protrudes partly frontally in the direction of a recess made on the back wall of the tapered seat of the rotating shaft of the motorized module.

Adapters are configured to couple a driver with a threaded bit, such as a threaded aerospace bit. The adapter includes an elongate body having a threaded adapter portion and a shank portion formed in the body. The threaded adapter portion includes an annular shroud with a plurality of threads formed in an inward-facing surface of a wall thereof.

An accessory tool includes an adapter end, and a shank coupled to the adapter end and including a first length. The shank includes a tool engagement portion, and a first reduced portion disposed between the tool engagement portion and the adapter end. The first reduced portion has a second length. The shank additionally includes a second reduced portion formed in the tool engagement portion between the first reduced portion and an end of the shank. The second length is 2.5% to 15% of a total length of the accessory tool.

The disclosure relates to a tool holder having a tool portion and a tool interface portion, wherein the tool interface portion has a lateral surface area which is of rotationally symmetrical design and extends over a predetermined axial length and wherein the tool interface portion has sections with non-round cross section.

A rotary cutting tool comprises a tool body having an axis of rotation (L) and a cylindrical shank, which comprises at least one locking groove via which the cutting tool can be axially locked in a tool holder. The locking groove has an axial groove, which extends from an axial end on the receiving side in axial direction (A) to an axial stop, and a circumferential groove, which is laterally adjacent to the axial groove and extends away from the axial stop and the axial groove in circumferential direction (U) toward a rotation stop. The circumferential groove comprises a first end face and a second end face opposite to said first end face, both of which extend in a plane that is perpendicular to the axis of rotation (L). A tool assembly having such a rotary cutting tool and a tool holder having a cylindrical tool receptacle for the cutting tool is provided as well.

A workpiece adapter system to support a workpiece rotated by a rotary machine, the system including a first drive member having a proximal end configured to be secured in a chuck of a rotary machine, at least one workpiece adapter configured to secure at least a portion of an end of a workpiece in a central opening of the workpiece adapter, an adapter mount configured to be connected to the at least one workpiece adapter, and a universal joint assembly arranged between the first drive member and the adapter mount, the universal joint assembly comprising a first fork member coupled to the first drive member, and a second fork member coupled to the adapter mount. An adapter ring may be provided to rotatably support a workpiece being machined.

This disclosure relates to a cutting tool, having a main body, a cutting head, which is joined to the free end of the main body and is formed, by primary shaping, as a sintered piece provided with at least one cutting edge, and a cooling lubricant feed, which is led through the main body axially and which has a cooling lubricant distributor inserted into the cutting head for redirecting cooling lubricant into the region of the at least one cutting edge. According to this disclosure, a plurality of protruding spacers for keeping a gap clear with respect to the cooling lubricant distributor and/or the main body are sintered on a supporting surface of the cutting head as primary shaped elements.

Provided is a socket which includes: an outer socket, an inner socket arranged to face an inner periphery of the outer socket, a coil spring (urging member) configured to urge the inner socket toward one end of the outer socket, and a lock/unlock mechanism configured to restrict the inner socket displaced toward the other end of the outer socket against an urging force of the coil spring from being rotated with respect to the outer socket.