The machine (1) for cutting meat comprises one or more linkage devices (10) about which is wound a blade (12) and a safety system which comprises: means (2) for detecting a dangerous condition for the safety of an operator; and a movement apparatus (4, 41, 42) configured for moving the above-mentioned linkage devices (10), following the detection of the dangerous condition.

A safety system is provided for a machine tool, having a tool, having a clamping device, arranged movably on a frame of the machine tool, for the tool. The clamping device is movable by a movement device from a working position, in which the tool can be used for working and in which the tool poses a risk of injury to a user, into a safety position, in which the tool poses substantially no risk of injury to the user. The movement device has at least two equally or oppositely magnetized and/or magnetizable magnetic means, of which at least a first magnetic means is connected to or arranged on the tool and at least one second magnetic means is connected to or arranged on the frame, such that the movement of the tool by the movement device from the working position into the safety position can be triggered and/or at least partially performed by magnetic force.

A machine tool includes a machining chamber, an illuminator in the machining chamber, and an NC unit. The NC unit includes a manual execution unit for executing the machining operation via a pulse signal generated in response to operation of a manually operated part, and has a one-block stop mode in which the NC program is executed for one block and then stopped. A notification unit issues a notification of completion of the execution of one block of the NC program while the machining operation is executed manually using the manual execution unit in the one-block stop mode, and the notification unit includes the illuminator. A change in the illumination state of the illuminator enables an operator to observe the interior of the machining chamber continuously while being notified of the completion of the execution of the one block of the NC program.

A battery-powered portable cutting tool includes a housing, a cutting element, an electric motor to drive the cutting element to cut, a battery to supply electric current to the motor and a control circuit to control the supply of electric current to the motor from the battery. The control circuit may include a main switch and an auxiliary switch. The control circuit may have an active state in which the main switch allows electric current to flow to the motor and an inactive state in which the main switch does not allow electric current to flow to the motor. The operation of the auxiliary switch causes the control circuit to change between the active and inactive states. The auxiliary switch is arranged to determine whether the tool is in an inappropriate state to be used and, if so, cause the control circuit to change to the inactive state.

An electric working machine comprises a motor, a switch, a drive device, a brake device, and a failure determiner. The switch is configured for operation by a user, has an on-state and an off-state. The drive device is configured to drive the motor in response to the switch being placed in the on-state. The brake device is configured to control deceleration of the motor to a stopped state in response to the switch being placed in the off-state. The failure determiner is configured to monitor deceleration of the motor during controlled deceleration and to determine whether the brake device has failed based on the monitored deceleration.

This method, for controlling a machine tool using a tool holder to which a coolant pipe is attached, includes: a step of detecting, in response to a signal indicating that a tool is prepared on a tool loading station of the machine tool, whether or not an abnormality has occurred in attaching the coolant pipe to the tool holder of the tool while the tool holder is at the tool loading station; and a step of issuing an alarm when the abnormality is detected in the step of detecting the occurrence of the abnormality.

A motor drive system enabling detection of cutting fluid deposited at a housing of electronic components. A housing holding electronic components of a motor drive system has top faces slanted with respect to the horizontal plane so as to guide the deposited cutting fluid. The housing further includes storage parts collecting the cutting fluid guided along the top faces. The storage parts may be graduated so as to enable the collected amount of the cutting fluid to be measured. The storage parts may be configured to be detachable from the housing.

A miter saw includes a base seat unit, a cutting unit rotatable relative to the base seat unit to bring a saw blade to rotate among a first working state, a second working state and a folded state, and a safety unit having at least one slide slot and a movable pin slidable along the slide slot. When the saw blade is in one of the first and second working states, the movable pin is retained in a first slot portion of the slide slot to permit operation of a trigger. When the saw blade is in the folded state, the movable pin is retained in a second slot portion of the slide slot to lock the trigger.

A first actuating element acts on a blocking device for an operator-controlled element for controlling the drive motor. In an enabled position of the blocking device, the operator-controlled element is enabled to control the drive motor. In a blocking position the blocking device mechanically blocks any actuation of the operator-controlled element. The first element acts on the blocking device via a transfer unit. In an actuated position of a second actuating element, the transfer unit establishes an operative connection between the first element and the blocking device, such that the blocking device is in the enabled position in the actuated position of the first element and is in the blocking position in the non-actuated position of the first element. In the non-actuated position of the second actuating element, the transfer unit is ineffective so that the blocking device is in the blocking position regardless of the first element's position.

A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch pin pivotable between a first position engaged with the swing arm assembly and a second position whereat the latch is not engaged with the swing arm assembly, an actuator configured to pivot the latch pin from the first position to the second position and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator in response to a sensed condition.