A system includes a first brake actuator for controlling pressure applied to a first brake, a BCU configured to receive a first plurality of inputs and to output a first BCU control signal for controlling the first brake actuator based on the first plurality of inputs, and a first switch coupled between the first brake actuator and the BCU. The system also includes a backup controller designed to receive a second plurality of inputs, determine a first backup control signal for controlling the first brake actuator based on the second plurality of inputs, determine that the BCU is functioning improperly based on the second plurality of inputs, and control the first switch to prevent the first BCU control signal from controlling the first brake actuator and to output the first backup control signal to the first brake actuator in response to determining that the BCU is functioning improperly.

A circuit for a smart safety system includes an electrical input connection to obtain power from a power source and an electrical output connection to regulate the power to an AC motor. The circuit also includes an adjustable DC power supply. One or more electronic switching devices regulate electricity output to the AC motor. The circuit has one more functional states including: a first state, activated via a first electrical signal, in which electricity is supplied to AC motor to allow normal operation of the AC motor, and a second state, activated via a second electrical signal, in which no electricity is supplied to the AC motor to prevent unintentional operation of the AC motor.

A high-precision, low false alarm rate detection apparatus, system, and method for rapid reaction to sudden kinetic impulses caused by abnormal motion, such as kickback, of a power tool. The apparatus, system and method includes local measurement of sensing modalities with local real-time processing and advanced digital signal processing to measure the total kinematic motion of any power tool. A machine learning model pre-trained for the power tool to predict an occurrence of an abnormal motion such as a kickback event of the power tool, the machine learning model using data received from sensing modalities to predict an occurrence of the kickback event, and a reactive device of the power tool is activated upon prediction of the kickback event.

The invention discloses a metal cutting machine with anti-cutting hands, which includes a cutting base. The cutting base is provided with a main power cavity, and the main power cavity is provided with a power device. The power device can provide a device for the device. Power. The invention has a simple structure, convenient maintenance, and easy use. The device can automatically adjust the cutting position, and at the same time, it can automatically monitor the living body during the metal cutting process. When the human body enters the danger zone, it can automatically start the built-in The emergency clamping device clamps the blade, so that the blade stops rotating, preventing the blade from cutting the human body and causing injury to the human body, thereby greatly improving the safety during production and preventing accidental injury.

The invention discloses a metal cutting machine with anti-cutting hands, which includes a cutting base. The cutting base is provided with a main power cavity, and the main power cavity is provided with a power device. The power device can provide a device for the device. Power. The invention has a simple structure, convenient maintenance, and easy use. The device can automatically adjust the cutting position, and at the same time, it can automatically monitor the living body during the metal cutting process. When the human body enters the danger zone, it can automatically start the built-in The emergency clamping device clamps the blade, so that the blade stops rotating, preventing the blade from cutting the human body and causing injury to the human body, thereby greatly improving the safety during production and preventing accidental injury.

The invention discloses a metal cutting machine with anti-cutting hands, which includes a cutting base. The cutting base is provided with a main power cavity, and the main power cavity is provided with a power device. The power device can provide a device for the device. Power. The invention has a simple structure, convenient maintenance, and easy use. The device can automatically adjust the cutting position, and at the same time, it can automatically monitor the living body during the metal cutting process. When the human body enters the danger zone, it can automatically start the built-in The emergency clamping device clamps the blade, so that the blade stops rotating, preventing the blade from cutting the human body and causing injury to the human body, thereby greatly improving the safety during production and preventing accidental injury.

A control method for a power tool for rotary tools comprises rotating a tool holder continuously about a working axis by a rotary drive. A rotary movement of a handle about the working axis is sensed by a motion sensor. A first angle of rotation of the handle is estimated by a first motion estimator, wherein rotary movements beneath a limit value are discounted. A second angle of rotation of the handle is estimated by a second motion estimator, wherein rotary movements beneath the limit value are taken into account. A measure for reducing the torque output of the rotary drive is activated when the first angle of rotation exceeds a first triggering threshold (A1), and when the second angle of rotation exceeds a second triggering threshold (A2) and at the same time a power output of the rotary drive exceeds a power threshold (L).

An angle grinder comprises a motor and an output member to which a grinding disc is attachable. The output member defines an output axis. A drive shaft is configured to transfer torque from the motor to the output member. A braking disc is coupled to the drive shaft and a braking pad is moveable in a direction transverse to the drive axis between a first braking pad position and a second braking pad position, in which the braking pad is not in contact with the braking disc. A biasing member biases the braking pad toward the first braking pad position and a trigger is pivotable about a trigger axis between a first trigger position and a second trigger position. In response to the trigger being pivoted from the first to the second trigger position, the braking pad is moved from the first to the second braking pad position.

A control method is provided for a hand-held power tool (1), which includes a motor (5) for rotationally driving a tool holder (2) about a working axis (12), including the following steps: detecting a rotary motion of the hand-held power tool (1) about the working axis (12); detecting a rotary or pivoting motion about a transverse axis (18) extending transversely to the working axis (12); triggering a safety function for reducing the torque output of the motor (5) when the rotary motion about the working axis (12) exceeds a limiting value, and suppressing the safety function when the rotary or pivoting motion about the transverse axis (18) is greater than a threshold value.

A spindle locking apparatus for power tools having a spindle mounted for rotation within a tubular housing. The locking apparatus includes a locking sleeve disposed between the spindle and its tubular housing, a locking collar surrounding the tubular housing radially outboard of the locking sleeve, and a set of drive pins mechanically coupling the locking collar to the locking sleeve through axial slots in the tubular collar. The inner periphery of the locking sleeve is shaped to lockingly engage a flat-sided portion of the spindle, and a spring element biases the locking sleeve away from the flat-sided portion of the spindle to unlock the spindle. The locking collar is axially shiftable against the spring bias as permitted by the slots in the tubular housing to bring the locking sleeve into locking engagement with the flat-sided portion of the spindle to prevent spindle rotation.