The present disclosure relates to powered hand tools and, in particular, their combination with a laser measuring system to measure a distance between a tool and a reference surface such as a wall, floor, or ceiling.

A tool holder is configured for rotation about a tool holder axis of rotation defining an axial direction. The tool holder, at one axial longitudinal end thereof, has a tool section with a tool-receiving formation for receiving a tool and, at the opposite axial longitudinal end, has a coupling section with a coupling formation for torque-transmitting coupling to a machine spindle of a machine tool. A measuring apparatus is configured for acquiring data relating to the operation of the tool holder. The measuring apparatus has a sensor, in particular an acceleration sensor, with at least two measurement axes. The two measurement axes are oriented substantially radially with respect to the tool holder axis of rotation.

The present disclosure relates to a weld groove forming method and a hollow article. The weld groove forming method may include: (S110) determining whether a side end of a pipe may be processed into a form of a true circle by using a sensor robot; and (S220) forming a weld groove in a form of a true circle at the side end of the pipe by using an automatic beveling machine when the sensor robot determines that the side end of the pipe may be processed into a form of a true circle in the step (S110).

A method of processing a workpiece includes supporting the workpiece on a tailstock extending along an axis, thermally processing the workpiece with a processing device, and displacing a portion of the tailstock assembly in response to thermal expansion of the workpiece as a result of processing with the thermal processing device.

A method for determining the clamping force of a force-actuated, rotationally drivable clamping device of a machine tool. An object is clamped with an actuation force F. Model-based calculation of the clamping force F.sub.calc to be expected is performed based on the actuation force F and the operating parameters of the machine tool in a control unit of the machine tool. Performing clocked measurement of the clamping force F.sub.real acting upon the object in the clamping device within the time span of a measurement interval I. Wireless transming the measured value F.sub.real to the control unit of the machine tool, and comparison of the measured value F.sub.real with the calculated clamping force F.sub.calc. The measurement interval is adapted if the comparison reveals a deviation which reaches a threshold value.

A drilling tool includes a tool body, a brushless motor, a first detector, a second detector and a control device. The brushless motor is housed in the tool body and configured to drive the tool accessory. The first detector is configured to detect first information corresponding to a load applied to the tool accessory. The second detector is configured to detect second information corresponding to a rotation state of the tool body around the driving axis. The control device is configured to control operation of the drilling tool. The control device is configured to set a conduction angle for the brushless motor based on the first information, and to determine, based on the first information and the second information, whether or not excessive rotation of the tool body due to jamming of the tool accessory occurs.

A retractable drill chuck system that is capable of being attached to a drill and drill bit; it can detect the initial breakthrough of the drill bit in a material and is capable of retracting the drill bit right as the drill bit breaks through the material; it has torque, force, and acceleration sensors to detect the breakthrough event of a drill bit; it also has an electromechanical mechanism to retract the drill bit from the material once the breakthrough event has been detected by the system; the retraction mechanism has a permanent magnet holding solenoid that, when activated, releases stored mechanical energy to allow the drill bit to be retracted.

Provided herein is an electric powered digging apparatus comprising: a powerhead, the power head comprises a motor and a gearbox; a handle frame, the powerhead is mounted onto the handle frame; and a drill bit, the drill bit is driven by the motor to rotate around a longitudinal axis, the electric power digging apparatus further comprises: a first safety mechanism, wherein the first safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal axis for an angle larger than a first threshold, and a second safety mechanism, wherein the second safety mechanism reduces torque output to the drill bit when the powerhead spins around the longitudinal drive axis at an angular speed larger than a second threshold FIG. 1

A method for detecting whether a slip clutch release event has taken place in a power tool includes determining a first speed of a gear device by a first sensor, determining a second speed of a motor by a second sensor, and determining a current value by a third sensor. The method further includes determining a state of the power tool by using the first and second speeds and the current value, determining a state of the gear device in dependence on the current value by a control device, ascertaining a state of activity of the slip clutch in dependence on the first and second speeds by the control device, and ascertaining by the control device by a combination of the state of the gear device and the state of activity of the slip clutch whether the slip clutch release event has taken place.

A cutting tool may include a base body, a tip, a sensor, and a connector. The base body may have a shank section and a securing section located at a front end of the shank section. The tip may be secured to the securing section and may have a cutting edge. The sensor may be accommodate inside the shank section. The connector may be located inside the shank section and may be oriented outward of the shank section. The connector may include a recess recessed relative to an outer surface of the shank section, and may also include a terminal exposed within the recess and electrically connected to the sensor.