A device for transmitting a torque produced by a drill to a drill bit includes a shank and a tool fitting. The shank has a first outer conical region, a groove region, and a second outer conical region and has longitudinal grooves. The tool fitting has a basic body which has a rotary driving region with outer rotary driving grooves, an intermediate element which has an inner driver region with inner rotary drivers and an outer driver region with outer rotary drivers, and a locking device. In the connected state, the inner rotary drivers engage in the longitudinal grooves and the outer rotary drivers engage in the outer rotary driving grooves. Lower rotary drivers are arranged on the base surface of the intermediate element where the lower rotary drivers, in the connected state, interact with lower rotary driving grooves in the rotary driving region of the basic body.

A device for transmitting a torque produced by a drill to a drill bit includes a shank and a tool fitting. The shank has a first outer conical region, a groove portion, and a second outer conical region and has first longitudinal grooves and second longitudinal grooves. The tool fitting has a basic body which has first outer rotary driving grooves, an intermediate element which has first inner rotary drivers, second inner rotary drivers, and first outer rotary drivers, and a locking device. In a connected state of the device, the first inner rotary drivers engage in the first longitudinal grooves, the second inner rotary drivers engage in the second longitudinal grooves, and the first outer rotary drivers engage in the first outer rotary driving grooves. The intermediate element has second outer rotary drivers which, in the connected state, engage in second outer rotary driving grooves of the basic body.

Provided is a gripping method including: a phase matching step of matching tool relief grooves of a contact metal member and track grooves of a constant velocity universal joint component with each other in phase; a measuring step of measuring phase differences between the track grooves of the constant velocity universal joint component and a female spline of the constant velocity universal joint component; a matching step of matching, based on a result of the measuring step, a stopper with a recessed portion of the female spline having the smallest phase difference and gripping the constant velocity universal joint component by a collet chuck. Under a state in which the constant velocity universal joint component is gripped by the collet chuck, the contact metal member holds the constant velocity universal joint component.

A chuck for a machine tool includes a body rotatable about a rotation axis and defining a plurality of slots extending radially in the body, a plurality of jaws received in corresponding ones of the plurality of slots, the jaws being radially movable relative to the body between an inward position and an outward position, and for at least one of the plurality of jaws, a sealing layer disposed in the slot receiving the at least one of the plurality of jaws and sealing an interface between opposed lateral sides of the at least one jaw and a surface of the body defining the slot receiving the at least one of the plurality of jaws. A method of sealing an interface between a surface defining a slot of a chuck is also described.

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.

The disclosed subject matter relates to a visual guide for aiding the surgeon in the insertion of a k-wire. The guide including a ring for receiving a guide wire, the guide wire extending from the ring parallel to the center axis of the ring; and, a ring attachment mechanism configured to attach the visual guide to a wire driver. The guide wires representing the trajectory of the k-wire in two orthogonal planes thus allowing the surgeon to free hand the insertion by visually referencing the guide wires and the actual trajectory of the k-wire within the bone.

Tool fitting device for a power tool, in particular a chipping hammer, including—a holding device for receiving and holding a tool shank, a retention element extending at least around a section or sections of the holding device, and a dust protection device for preventing the penetration of dust into the tool fitting device. The dust protection device includes at least one first dust stripping element, at least one fixing bead, and at least one sealing lip element, wherein the sealing lip element is positioned in front of the retention element in the axial direction. Dust protection device for use in a tool fitting device.

A flexible bit holder may include a drive body having a receiving orifice formed therein, a drive body having a shank and a flexion assembly. The receiving orifice may be configured to receive a bit, and the shank may be configured to interface with a driver to receive rotational energy from the driver. The flexion assembly may be disposed between at least a portion of the drive body and the driven body to operably couple the drive body and driven body. The flexion assembly may be configured to transfer torque applied to the driven body by the driver to the drive body. The flexion assembly may be formed of flexible material such that the drive body is rotatable relative to the driven body about a common axis of the drive body and the driven body.

A receptacle for a rotating tool includes a rotationally symmetrical, hollow-cylindrical receptacle main body. A through-pipe, which is braced in particular in relation to the receptacle main body, is disposed in a cavity of the receptacle main body so as to be spaced apart from a cylinder barrel of the hollow-cylindrical receptacle main body.

A protective device is provided that covers a drill chuck to protect it from dust or debris that may be released when a material is being drilled. The protective device has a mixed gasket comprising two sheets with fins that in their central part have independent movement where both are perforated (female type), while the other sheet contains caps (males) that are joined for better manufacturing, wherein said males are long so that they pierce the female holes and embed themselves in a base that is located directly in the protective device, allowing its adequate fastening.