A power tool includes a housing. A motor is housed in the housing. A platen is driven by the motor. The housing includes a first housing part, a second housing part and a third housing part. The housing defines a battery receptacle portion configured to receive a removable battery pack which powers the motor. Each of the first housing part, the second housing part and the third housing part form part of the battery receptacle portion.

An electric power tool. The electric power tool may include: a motor; a control device configured to control the motor; a power transmission mechanism connected to the motor; a housing that houses the motor, the control device and the power transmission mechanism; an end tool holder connected to the power transmission mechanism; an accessory configured to be detachably attached to the housing; and a detector configured to detect whether the accessory is attached or not. The detector may include: a link member configured to move with respect to the housing according to the accessory being attached or detached; a magnet fixed in position with respect to one of the link member and the housing; and a magnetic sensor fixed in position with respect to another of the link member and the housing.

An electric power tool. The electric power tool may include: a motor; a control device configured to control the motor; a power transmission mechanism connected to the motor; a housing that houses the motor, the control device and the power transmission mechanism; an end tool holder connected to the power transmission mechanism; an accessory configured to be detachably attached to the housing; and a detector configured to detect whether the accessory is attached or not. The detector may include: a link member configured to move with respect to the housing according to the accessory being attached or detached; a magnet fixed in position with respect to one of the link member and the housing; and a magnetic sensor fixed in position with respect to another of the link member and the housing.

A sanding tool includes a baseplate assembly, a housing assembly, a drive mechanism, and a fan assembly. The baseplate assembly includes a baseplate. The housing assembly includes a body housing. The housing assembly further includes a functional housing, where a hollow cavity is formed in the functional housing, the functional housing is provided with an inlet and an outlet that communicate with the hollow cavity, the inlet communicates with a dust removal channel of the sanding tool, the outlet is configured to discharge gas in the cavity, and the fan assembly is used for forming a dust removal air path moving towards the inlet. A ratio of an area of a projection of the functional housing on the baseplate to an area of the baseplate is greater than or equal to 0.15 and less than or equal to 0.95.

A sanding tool includes a baseplate assembly, a housing assembly, a drive mechanism, and a fan assembly. The baseplate assembly includes a baseplate. The housing assembly includes a body housing. The housing assembly further includes a functional housing, where a hollow cavity is formed in the functional housing, the functional housing is provided with an inlet and an outlet that communicate with the hollow cavity, the inlet communicates with a dust removal channel of the sanding tool, the outlet is configured to discharge gas in the cavity, and the fan assembly is used for forming a dust removal air path moving towards the inlet. A ratio of an area of a projection of the functional housing on the baseplate to an area of the baseplate is greater than or equal to 0.15 and less than or equal to 0.95.

A belt sander includes a frame, a drive roller, an idler roller rotatably attached to a pivot arm, a first linear actuator configured for pivoting the pivot arm, a nose roller and a continuous abrasive belt wrapped around the drive roller, the idler roller and the nose roller. A drive motor rotates the drive roller, and an air cylinder attached to the frame and a nose roller spindle exerts a first force against the frame and a second force equal to and opposite the first force against the nose roller spindle. A first sensor senses a position of a belt edge, and a first controller receives a belt edge position signal from the first sensor and sends a command signal responsive to the position signal to the first linear actuator for expanding or contracting so as to pivot the pivot arm about a pivot point.

A belt sander includes a frame, a drive roller, an idler roller rotatably attached to a pivot arm, a first linear actuator configured for pivoting the pivot arm, a nose roller and a continuous abrasive belt wrapped around the drive roller, the idler roller and the nose roller. A drive motor rotates the drive roller, and an air cylinder attached to the frame and a nose roller spindle exerts a first force against the frame and a second force equal to and opposite the first force against the nose roller spindle. A first sensor senses a position of a belt edge, and a first controller receives a belt edge position signal from the first sensor and sends a command signal responsive to the position signal to the first linear actuator for expanding or contracting so as to pivot the pivot arm about a pivot point.

Multiple floor treatment operations, such as burnishing, polishing and scrubbing, may be performed using a single floor treatment machine having a motor, the speed of which is governed by a controller that responses to sensor signals indicative of the type of floor treatments pad or pads operatively coupled to the motor.

Multiple floor treatment operations, such as burnishing, polishing and scrubbing, may be performed using a single floor treatment machine having a motor, the speed of which is governed by a controller that responses to sensor signals indicative of the type of floor treatments pad or pads operatively coupled to the motor.

The present invention provides an end face polishing device capable of improving a polishing accuracy by polishing an end face of an optical fiber ferrule with adjusted polishing pressure. An end face polishing device 1 for optical fiber ferrule for polishing an end face of an optical fiber ferrule by applying a polishing pressure between a polishing plate 5 driven by a polishing drive shaft and an optical fiber ferrule held by a holding portion 9. The end face polishing device for optical fiber ferrule has: a bearing portion for allowing the polishing plate 5 to rotate relatively around the polishing drive shaft and to move relatively to the polishing drive shaft in an axial direction; a polishing plate guide supporting portion 31 for movably supporting the polishing plate 5 on a base portion 3 to apply the polishing pressure to the holding portion 9 by allowing the polishing plate 5 to move in the axial direction; a pressing drive source 15 for adjustably outputting a driving force to apply the polishing pressure; and a pressing force transmission mechanism 21 for transmitting the driving force output from the pressing drive source 15 as a pressing force in the axial movement direction of the polishing plate 5.