A power tool includes a motor including a rotation shaft; an output shaft to which a cutting blade is attachable; a belt for transmitting a rotational force of the rotation shaft to the output shaft; an intermediate shaft positioned between the rotation shaft and the output shaft on a transmission path of the rotational force; a plurality of pulleys including a first pulley provided on the rotation shaft and rotatable integrally with the rotation shaft and a second pulley through which the intermediate shaft is inserted and having a diameter greater than that of the first pulley, the first pulley and the second pulley supporting the belt and being rotatable in accordance with rotation of the rotation shaft; and a transmission restricting part provided on a transmission path for transmitting rotation of the second pulley to the cutting blade and configured to interrupt or limit transmission of a rotational force.

A foldable miter saw with safety device includes a base unit, and a cutting unit including a rotating member, a blade, a handle, a driving unit, and a safety assembly that includes a safety switch and a safety member with a retaining section. When the safety switch is not operated, the driving unit cannot drive the blade to rotate. During the period when the rotating member drives the blade from a working position to a folded position, the safety member can fall downward under the action of gravity and move to an engaged position, the retaining section is relatively close to the safety switch so that the safety switch cannot be operated, which can also prevent the driving unit from driving the blade to rotate and can avoid accidentally triggering the blade to rotate during transportation after folding.

A foldable miter saw with safety device includes a base unit, and a cutting unit including a rotating member, a blade, a handle, a driving unit, and a safety assembly that includes a safety switch and a safety member with a retaining section. When the safety switch is not operated, the driving unit cannot drive the blade to rotate. During the period when the rotating member drives the blade from a working position to a folded position, the safety member can fall downward under the action of gravity and move to an engaged position, the retaining section is relatively close to the safety switch so that the safety switch cannot be operated, which can also prevent the driving unit from driving the blade to rotate and can avoid accidentally triggering the blade to rotate during transportation after folding.

An operation member has a higher degree of design freedom in, for example, the position and the amount of displacement of an operation part, and the force used for operation. A portable cutting machine includes a base, an electric motor, a blade rotatable by the electric motor, a movable cover covering a lower part of the blade protruding downward from the base and rotatable to be open, an operation lever located frontward from a rotation center of the blade and rotatable, and a transmission lever rotatable to push and open the movable cover when pushed by the operation lever.

An operation member has a higher degree of design freedom in, for example, the position and the amount of displacement of an operation part, and the force used for operation. A portable cutting machine includes a base, an electric motor, a blade rotatable by the electric motor, a movable cover covering a lower part of the blade protruding downward from the base and rotatable to be open, an operation lever located frontward from a rotation center of the blade and rotatable, and a transmission lever rotatable to push and open the movable cover when pushed by the operation lever.

A fine adjuster for finely adjusting the lateral tilt position of a cutting machine body has improved operability. A cutting machine includes a table, a cutting machine body, a tilting member supporting the cutting machine body in a manner laterally tiltable relative to the table, a tilting locking member, and a lever member to adjust the tilt position of the cutting machine body. The lever member includes a fulcrum coupled to the table in a manner rotatable about an axis, a load point coupled to the tilting member, and an effort point extending from the fulcrum and located at a distance from the fulcrum greater than a distance between the fulcrum and the load point.

A fine adjuster for finely adjusting the lateral tilt position of a cutting machine body has improved operability. A cutting machine includes a table, a cutting machine body, a tilting member supporting the cutting machine body in a manner laterally tiltable relative to the table, a tilting locking member, and a lever member to adjust the tilt position of the cutting machine body. The lever member includes a fulcrum coupled to the table in a manner rotatable about an axis, a load point coupled to the tilting member, and an effort point extending from the fulcrum and located at a distance from the fulcrum greater than a distance between the fulcrum and the load point.

A machine for conical machining workpieces of wood and plastics has a support supporting the workpieces during feeding in a transport direction through the machine. Rotatably driven tools are provided to machine longitudinal sides of the workpieces extending in the transport direction. At least one of the rotatably driven tools is adjustable transverse to the transport direction. A tongue and groove guide guides the workpieces through the machine in transport direction. In a method for conical machining workpieces, the workpieces prior to or during feeding are measured in regard to the conicity to be machined. A form-fit element is produced on the workpieces and interacts with a counter form-fit element during feeding of the workpieces so as to guide the workpieces in transport direction. At least one of the rotatably driven tools is adjusted transverse to the transport direction during feeding of the workpieces based on the measured conicity.

A temperature sensor device and a system for measuring temperature of a fast moving surface are described herein. A sensor body comprising a temperature sensor for measuring temperature of the moving surface. The sensor body has an engagement surface for contacting the moving surface. A biasing mechanism is coupled to the sensor body for providing pressure to maintain the engagement surface in contact with moving surface and for allowing the engagement surface to pivot with the moving surface when the moving surface deflects. An electronics module is connected to the temperature sensor for determining temperature data indicative of the temperature of the moving surface and for transmitting the temperature data to an external device. The temperature sensor device and/or the system may be used for measuring temperature of a saw blade.

A temperature sensor device and a system for measuring temperature of a fast moving surface are described herein. A sensor body comprising a temperature sensor for measuring temperature of the moving surface. The sensor body has an engagement surface for contacting the moving surface. A biasing mechanism is coupled to the sensor body for providing pressure to maintain the engagement surface in contact with moving surface and for allowing the engagement surface to pivot with the moving surface when the moving surface deflects. An electronics module is connected to the temperature sensor for determining temperature data indicative of the temperature of the moving surface and for transmitting the temperature data to an external device. The temperature sensor device and/or the system may be used for measuring temperature of a saw blade.