Abstract: Power tools with sensor arrays and methods of operating power tools are disclosed herein. In addition to the sensor arrays, the power tools include an implement holder, a motor, a workpiece support, and a controller. The implement holder is configured to hold an implement. The motor is configured to receive an electric current and to actuate the implement holder to move the implement. The workpiece support includes a support surface configured to support the workpiece and is configured to maintain an at least substantially fixed orientation relative to the workpiece while the implement performs an operation on the workpiece. The sensor array is configured to detect physical contact between the workpiece support and the workpiece and to generate a sensor output. The controller is programmed to receive the sensor output and to control the operation of the power tool based, at least in part, on the sensor output.

Abstract: Power tools and methods of operating power tools are disclosed herein. The power tools include a motor including a motor shaft configured to rotate about a shaft rotational axis. The power tools also include a sensor assembly configured to generate a differential voltage signal that is indicative of a distance between an individual and a cutting tool being less than a threshold distance. The sensor assembly also is configured to produce a sensor assembly output that is based upon the differential voltage signal. The power tools further include an analysis circuit configured to receive the sensor assembly output and to generate a trigger signal responsive to the sensor assembly output being outside a nominal sensor assembly output range. The power tools also include a mechanical reaction mechanism configured to insulate the individual from the cutting tool responsive to receipt of the trigger signal.

Abstract: A power tool device, in particular a screwing and/or drilling device, including a drive unit for a rotational driving of a tool, in particular a drill or a screwdriver blade. The power tool device is adapted to detect at least one drive variable (AG) during the rotational driving of the tool, in which the drive variable (AG) is the torque acting on the tool and/or a drive variable associated with this torque, for example an electrical drive variable of the drive unit. The power tool device is adapted to determine a change criterion during the rotational driving of the tool on the basis of the at least one detected drive variable (AG) and to change the rotational driving of the tool in response to the detected drive variable (AG) satisfying the change criterion.

Abstract: An assistance apparatus for a hand-held tool apparatus, in particular a screwing and/or drilling apparatus, that includes a fastening unit for detachable fastening of the assistance apparatus to the tool apparatus, and an electrical assistance device, which is designed to provide an assistance function for supporting a machining operation of the tool apparatus. The electrical assistance device includes an assistance apparatus communication unit for communication with the tool apparatus.