The invention relates to a safety device for a machine tool, comprising a detection device which is designed to detect a potentially hazardous state for a part of the body of a user of the machine tool caused by a component of the machine tool which could cause injury a safety measure device which is designed to carry out a safety measure by means of which a hazardous state of the user of the machine tool is reduced or avoided by a component of the machine tool, a control device which is coupled to the detection device and the safety measure device in terms of signal technology and is designed to carry out an evaluation of a potentially hazardous state detected by the detection device on the basis of predetermined criteria and, depending on the evaluation, to trigger the safety measure device to carry out a safety measure,
characterized in that
the capture device comprises a head mount for attachment to the user's head and an image capture device attached to the head mount and aligned to perform image capture in the user's field of view, and
the control device is designed to perform the evaluation on the basis of images captured by the image capture device.

A circular saw includes a support surface for a workpiece and which has a saw blade slot, a main drive motor arranged below the support surface for driving a saw blade in rotational movement, and a saw blade holder connected to the main drive motor for the purpose of transmitting the rotational movement A height-adjustment apparatus, with a height actuator and a transmission element coupled to the saw blade holder are arranged to set the spacing between a saw blade holder and the support surface An electronic interface provides the input of a saw blade projection. A protection apparatus is connected by signals to a monitoring apparatus and the height actuator and is adapted to activate the height actuator for quick lowering of the saw blade holder when a dangerous situation is recorded by the monitoring apparatus.

A machining system for wood or metal working is disclosed that incorporates a non-contact hazard detection and mitigation system to protect an operator from accidental contact with a working element such as a saw blade or the like. The system may include one or more sensors, such as two-dimensional cameras, depth sensors, three-dimensional time-of-flight sensors, thermal imagers, or electrode arrays, positioned proximate to the working element to track the location and movement of a human body part in multiple directions or planes. A controller may process sensor data to determine the position, velocity, or trajectory of the body part relative to the working element, identify hazardous situations such as entry into a hazard zone, and activate the hazard mitigation system to reduce the risk of serious injury to the human body part.

A machining tool is disclosed having an integrated hazard detection and mitigation system to protect an operator from accidental contact with a working element such as a blade or bit. The tool includes a hazard detection system configured to track the position or movement of a human body part relative to the working element in horizontal and vertical directions. A controller processes sensor outputs to identify hazardous conditions and, when detected, activates a hazard mitigation system. The hazard mitigation system employs a scissor linkage assembly and a retraction mechanism operable to rapidly move the working element from a deployed position above a work surface to a retracted position below the work surface. In certain embodiments, the retraction mechanism includes a spring biasing the working element downward and a latch, such as an electromagnet or mechanical latch assembly, that selectively restrains the spring until release is triggered.