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 power tool includes a chuck device for clamping a working component. The chuck device includes a locking mechanism, an operation member, a connection shaft, a driving assembly, and a stopper member. The locking mechanism implements a locking function. The operation member is operable to allow the locking mechanism to leave a locking position and is detachably connected to the connection shaft. The driving assembly drives the locking mechanism to be in the locking position. The stopper member is configured to limit the driving assembly.

The present invention relates to a novel pipe tool device. The device comprises a drill attachment which can be secured to any type of standard impact or drill gun capable of tightening or loosening PVC and threaded pipes of varying sizes. The drill attachment comprises a gap ring and a slip die which allows the drill attachment to tighten or loosen piping. The drill attachment can be connected to any standard drill bit attachment and activated in a clockwise or counterclockwise direction for tightening or loosening applications. The pipe tool device rotates open and closed and includes a support beam on the drill. Further, a second drill attachment can be provided, which functions as a pipe cutter.

A driver-drill (1) includes a motor (16), a spindle (32), which is rotationally driven using rotational energy output by the motor (16), and a chuck (30), which rotates integrally with the spindle (32). The chuck (30) includes: a chuck body (31); a chuck sleeve (80), which is externally mounted on the chuck body (31); and two or more chuck jaws (67), which are provided in the chuck body (31) and which expand and contract relative to the rotational axis of the spindle (32) in response to manual rotation of the chuck sleeve (80). The spindle (32) may be integrally formed (in one piece) with the chuck body (31). In addition or in the alternative, the chuck body (31) may be rotatably supported by a bearing (42) disposed in a tube-shaped housing (6).

A chuck (600) for use with a powered driver having a rotatable drive shaft is provided. The chuck may include a body, a plurality of movable jaws (610), a nut (625), a sleeve (640), and an anti-vibration assembly (620). The anti-vibration assembly may be operably disposed between the sleeve and the nut and configured to absorb vibration caused by operation of the power driver and maintain a position of the sleeve relative to the nut when the sleeve is in at least a locked position.

A workholding apparatus comprises a base having a channel, two lower members each having a protrusion, and two upper members each having a cavity. Each lower member is coupled with an actuator placed inside the channel. Each upper member is removably coupled with a lower member by inserting the protrusion inside the cavity. The protrusions and the cavities include triangular regions having tilted sides. The upper members releasably engage the lower members by inserting the protrusions into the cavities. The lower members are coupled with an actuator which operates to move the lower members toward one another causing the upper members to generate a clamping, force. A mounting apparatus comprises two lower members and a single upper member, having similar protrusions and cavities, provides a mounting platform.

A workholding apparatus comprises a base having a channel, two lower members each having a protrusion, and two upper members each having a cavity. Each lower member is coupled with an actuator placed inside the channel. Each upper member is removably coupled with a lower member by inserting the protrusion inside the cavity. The protrusions and the cavities include triangular regions having tilted sides. The upper members releasably engage the lower members by inserting the protrusions into the cavities. The lower members are coupled with an actuator which operates to move the lower members toward one another causing the upper members to generate a clamping, force. A mounting apparatus comprises two lower members and a single upper member, having similar protrusions and cavities, provides a mounting platform.

In the case of a clamping device (1) for holding a workpiece (3) to be machined by a machine tool (2), which is used in particular as a clamping chuck, vice or zero point clamping system, consisting of a housing (4), a supporting element (6), which is a component of the housing (4) or is fastened thereto, and thereby forms a supporting surface (6'), on which the respective workpiece (3) rests during the machining process, at least one clamping jaw (7) that is mounted in the housing (4) so it is axially movable and a counter-stop formed by the housing (4) or an axially movable clamping jaw (8), between which the workpiece (3) is clamped in the region of the supporting surface (6') or at least three clamping jaws (7, 8, 9) mounted in the housing (4) so they are axially movable, between which the workpiece (3) is clamped in the region of the supporting surface (6'), a reliable and verifiable monitoring of the distance between the workpiece (3) and the supporting surface (6') and/or the clamping jaws (7, 8, 9) is supposed to take place at the clamping device (1) before and during the entire machining process, without extensive constructional measures being required for this. This is achieved in that at least one free space (11) is integrated in the housing (4), the axis of symmetry of which runs perpendicular to the supporting surface (6') and which faces the clamped workpiece (3) with the open front side, and/or that at least one free space (11) is integrated in one of the clamping jaws (7, 8, 9), which free space leads to the respective clamping surface (7', 8', 9') of the clamping jaws (7, 8, 9), that a proximity sensor (12) is inserted in the respective free space (11), that, via the proximity sensor (12), a monitoring area (13) is formed between the supporting surface (6') and the workpiece (3), which is monitored by an analysis unit (14) with respect to the presence of the workpiece (3).

In the case of a clamping device (1) for holding a workpiece (3) to be machined by a machine tool (2), which is used in particular as a clamping chuck, vice or zero point clamping system, consisting of a housing (4), a supporting element (6), which is a component of the housing (4) or is fastened thereto, and thereby forms a supporting surface (6'), on which the respective workpiece (3) rests during the machining process, at least one clamping jaw (7) that is mounted in the housing (4) so it is axially movable and a counter-stop formed by the housing (4) or an axially movable clamping jaw (8), between which the workpiece (3) is clamped in the region of the supporting surface (6') or at least three clamping jaws (7, 8, 9) mounted in the housing (4) so they are axially movable, between which the workpiece (3) is clamped in the region of the supporting surface (6'), a reliable and verifiable monitoring of the distance between the workpiece (3) and the supporting surface (6') and/or the clamping jaws (7, 8, 9) is supposed to take place at the clamping device (1) before and during the entire machining process, without extensive constructional measures being required for this. This is achieved in that at least one free space (11) is integrated in the housing (4), the axis of symmetry of which runs perpendicular to the supporting surface (6') and which faces the clamped workpiece (3) with the open front side, and/or that at least one free space (11) is integrated in one of the clamping jaws (7, 8, 9), which free space leads to the respective clamping surface (7', 8', 9') of the clamping jaws (7, 8, 9), that a proximity sensor (12) is inserted in the respective free space (11), that, via the proximity sensor (12), a monitoring area (13) is formed between the supporting surface (6') and the workpiece (3), which is monitored by an analysis unit (14) with respect to the presence of the workpiece (3).

A chuck (10) is provided that includes a plurality of jaws (20) and a body (30) configured to rotate with a drive spindle of a power driver. The chuck (10) may also include a nut (80) comprising nut teeth (82). The nut (80) may be operably coupled to the jaws (20) and configured to move the jaws (20) relative to the body (30) in the opening or closing direction. The chuck (10) may also include a clutch (100) comprising clutch teeth (102). The clutch (100) may be configured to move between a working position and a jaw actuating position. In the working position, the clutch teeth (102) may be engaged with the nut teeth (82) to prevent movement of the nut (80) relative to the body (30), and, in the jaw actuating position, the clutch teeth (102) need not be engaged with the nut teeth (82) and the nut (80) may be free to move relative to the body (30).