Abstract: A method for controlling a wall saw system during creation of a separating cut in a workpiece. The wall saw system includes a saw head, a pivotable saw arm, a first saw blade, and a larger second saw blade. The separating cut is performed in a plurality of main cuts, where the parameters of the main cuts (saw blade diameter of the saw blade used, main-cut angle) are defined before the start in a main-cut sequence. After the processing of the separating cut by the first saw blade is concluded, the controlled processing of the separating cut is interrupted by a control unit and the wall saw is moved into a parking position such that all actions of the saw-blade change (swinging out the saw arm, removing the first saw blade, installing the second saw blade, and swinging in the saw arm) can be performed.

Abstract: A method for controlling a wall saw system during the creation of a separating cut in a workpiece. The movement of the saw head is controlled at the end points such that a boundary of the wall saw facing the end point coincides with the end point after the pivoting movement of the saw arm. In the case of a free end point, the boundary of the wall saw is formed by an upper exit point of the saw blade. In the case of an obstacle, the boundary of the wall saw is formed by the saw blade edge of the saw blade if the processing occurs without the blade guard or by the blade guard edge of the blade guard if the processing occurs with the blade guard.

Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.

Abstract: A control method for a power tool for rotary tools provides the following: A tool holder is rotated continuously in a forward direction about a working axis by a rotary drive when an operating switch is actuated. The continuous rotation in the forward direction is interrupted by a protective process when a protective device senses blocking of the tool holder. During the protective process, one or more cycles are executed, in which the rotary drive is actuated successively in accordance with an unimpeded rotary movement in a reverse direction and in accordance with an unimpeded rotary movement in the forward direction. The rotary drive is supplied with a first amount of energy for the rotary movement in the reverse direction and with a second amount of energy for the rotary movement in the forward direction. The first amount of energy is smaller than the second amount of energy.

Abstract: A method for controlling a wall saw system during creation of a separating cut in a workpiece is disclosed. The wall saw system includes a saw head, a pivotable saw arm, a first saw blade, and a larger second saw blade. The separating cut is performed in a plurality of main cuts, where the parameters of the main cuts (saw blade diameter of the saw blade used, main-cut angle) are defined before the start in a main-cut sequence. After the processing of the separating cut by the first saw blade is concluded, the controlled processing of the separating cut is interrupted by a control unit and the wall saw is moved into a parking position such that all actions of the saw-blade change (swinging out the saw arm, removing the first saw blade, installing the second saw blade, and swinging in the saw arm) can be performed.

Abstract: A hand-held power tool (1) includes a tool holder (2) for holding a tool on a working axis (11) and a motor (5) for rotationally driving the tool holder (2) about the working axis (11). The motor (5) is situated in a power-tool housing (16) and a handle (9) is fastened on the power-tool housing (16) for guiding the hand-held power tool (1) during operation. A rotary motion sensor (15) detects a rotary motion of the power-tool housing (16) about the working axis (11). A monitor (19) ascertains a holding force based on an amplitude of the rotary motion in a frequency range between 0.4 Hz and 4 Hz. A safety device (13) reduces a torque output to the tool holder (2) when the detected rotary motion exceeds a limiting value, the limiting value being set as a function of the holding force.

Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.

Abstract: A method for controlling a wall saw system during the creation of a separating cut in a workpiece. The movement of the saw head is controlled at the end points such that a boundary of the wall saw facing the end point coincides with the end point after the pivoting movement of the saw arm. In the case of a free end point, the boundary of the wall saw is formed by an upper exit point of the saw blade. In the case of an obstacle, the boundary of the wall saw is formed by the saw blade edge of the saw blade if the processing occurs without the blade guard or by the blade guard edge of the blade guard if the processing occurs with the blade guard.

Abstract: A method for controlling a wall saw system during creation of a separating cut in a workpiece between a first and a second end point is disclosed. The separating cut is performed in a plurality of main cuts. The movement of the saw head is controlled at the end points such that a boundary of the wall saw facing the end point coincides with the end point. In the case of a free end point, the boundary of the wall saw is formed by an upper exit point of the saw blade. In the case of an obstacle, the boundary of the wall saw is formed by the saw blade edge of the saw blade if the processing occurs without the blade guard or by the blade guard edge of the blade guard if the processing occurs with the blade guard.

Abstract: A method for controlling a wall saw system during the creation of a separating cut in a workpiece between a first and a second end point is disclosed. The separating cut is performed in a plurality of main cuts. The movement of the saw head is controlled at the end points such that a boundary of the wall saw facing the end point coincides with the end point after the pivoting movement of the saw arm into the main-cut angle of the following main cut. For a free end point, the boundary of the wall saw is formed by an upper exit point of the saw blade. For an obstacle, the boundary is formed by the saw blade edge of the saw blade if the processing occurs without the blade guard or by the blade guard edge of the blade guard if the processing occurs with the blade guard.

Abstract: In a method for controlling a drive (4) of an electrically operated screwdriving power tool (2) during a screwdriving process, a tool holder (14) with a screw bit (16) fastened thereto is acted upon by the drive (4) to drive a fastening element (18) having a contact area (24) into a constructional component (20), with the screw bit movable up to a maximum screw-in value (Dmax) at a speed (D) and a operational torque (MA) generated between the screw bit (16) and the fastening element (18), and after it has been detected that a predetermined triggering screw-in depth (s0) has been reached, the speed (D) is reduced from the maximum screw-in value (Dmax) during a tightening process (AV), and, when it has been detected that a determined end value of the operational torque (MA) is reached, the screwdriving process is terminated.

Abstract: A control wall saw includes a guide rail (2) securable on a to-be-cut wall (7), a saw head (3) displaceable along the guide rail (2), a rotary drive, a pivotally adjustable saw arm (4) on a radially end of which a rotatably driven, disc-shaped saw blade (5) is releasably mountable, a programmable control element (13) for controlling at least the saw head (3) and the saw arm (4) and having an input (14) and an output (15), a displacement sensor (16) for determining a position of the saw head (3) along the guide rail (2) and connected with the programmable control element (13), and a pivot angle sensor (17) for determining a pivot angle (?) of the saw arm (4) relative to a longitudinal direction of the guide rail (2) and connected with the programmable control element (13).

Abstract: A control wall saw includes a guide rail (2) securable on a to-be-cut wall (7), a saw head (3) displaceable along the guide rail (2), a rotary drive, a pivotally adjustable saw arm (4) on a radially end of which a rotatably driven, disc-shaped saw blade (5) is releasably mountable, a programmable control element (13) for controlling at least the saw head (3) and the saw arm (4) and having an input (14) and an output (15), a displacement sensor (16) for determining a position of the saw head (3) along the guide rail (2) and connected with the programmable control element (13), and a pivot angle sensor (17) for determining a pivot angle (?) of the saw arm (4) relative to a longitudinal direction of the guide rail (2) and connected with the programmable control element (13).