A power tool includes a housing and a motor disposed in the housing. The motor has an axial face and a motor shaft extending from the axial face. The power tool also includes a spindle driven by the motor about an output axis, a motor plate having a central opening defining an inner surface of the motor plate, and a tolerance ring coupled to the inner surface of the motor plate. The tolerance ring has deformable waves. The motor plate is coupled to the motor by engagement of the deformable waves with the motor to take up tolerances between the motor plate and the motor.

A clamping apparatus with a control mechanism includes a cam, a cam post, a handle, and a handle plate. The cam is configured to rotate into a clamped position in which the clamping apparatus is in a clamped state and an unclamped position in which the clamping apparatus is in an unclamped state. The cam post is rotatable with the cam. The handle is movable into a first position and a second position. The handle plate is rotatable with the handle. The handle plate is configured to rotate the cam post in a first direction when the handle moves from the first position to the second position. The handle plate is configured to rotate in a second direction without rotating the cam post in the second direction for a predetermined distance when the handle moves from the second position to the first position. The first direction is opposite to the second direction.

A clamping apparatus with a control mechanism includes a cam, a cam post, a handle, and a handle plate. The cam is configured to rotate into a clamped position in which the clamping apparatus is in a clamped state and an unclamped position in which the clamping apparatus is in an unclamped state. The cam post is rotatable with the cam. The handle is movable into a first position and a second position. The handle plate is rotatable with the handle. The handle plate is configured to rotate the cam post in a first direction when the handle moves from the first position to the second position. The handle plate is configured to rotate in a second direction without rotating the cam post in the second direction for a predetermined distance when the handle moves from the second position to the first position. The first direction is opposite to the second direction.

An accessory for use with an oscillating power tool includes an attachment plate and a raised annular rim extending from the attachment plate. The raised annular rim has a central recess and a keyed sidewall with a star shape configured to be engaged by a first mating geometry of an oscillating power tool. The raised annular rim may further include a receiving portion formed thereon configured to be engaged by a second mating geometry of an oscillating power tool.

A clamp arrangement for securing an accessory to an oscillating power tool can include a clamp assembly including a first clamp member that moves relative to the accessory between a closed position wherein the clamp assembly retains the accessory and an open position wherein the first clamp is offset from the accessory permitting removal of the first accessory from the clamp assembly. The clamp assembly can further comprise a second clamp member having a first portion that opposes the first clamp member and cooperates with the first clamp member to clamp the accessory between the first and second clamp members. An attachment plate can carry the clamp assembly. The attachment plate can have a first mating detail formed thereon that is configured to selectively and removably mate with a complementary second mating detail on the power tool in an assembled position.

An accessory for coupling to an oscillating power tool includes a working end portion extending along a working axis and an attachment portion coupled to the working end portion including a top wall, a bottom wall spaced apart from the top wall, and a peripheral wall extending from the top wall to the bottom wall at least partially around the top wall to form a portion of a polygonal shape. A generally U-shaped opening defined in the top wall extends along an attachment axis at an obtuse angle to the working axis and is open to a gap in the peripheral wall. A plurality of radial openings is defined in the top wall between the U-shaped opening and the peripheral wall. The attachment portion is configured to couple the attachment portion to at least two differently configured oscillating power tools.

A collet chuck including a mandrel, a first collet that is positioned outside the mandrel, an intermediate claw formed at each tip portion has an inner tapered surface formed on an inner side in sliding contact with the outer tapered surface of the mandrel, a second collet that is positioned outside the first collet, a chuck claw formed at each tip portion has an inner sliding contact surface formed on an inner side in sliding contact with an outer sliding contact surface formed on an outer side of the intermediate claw, and a chuck surface formed on an outer side of the chuck claw is brought into contact with a workpiece, and a collet support member that receives a force in an axial direction and supports the first collet movably in the axial direction.

A collet chuck including a mandrel, a first collet that is positioned outside the mandrel, an intermediate claw formed at each tip portion has an inner tapered surface formed on an inner side in sliding contact with the outer tapered surface of the mandrel, a second collet that is positioned outside the first collet, a chuck claw formed at each tip portion has an inner sliding contact surface formed on an inner side in sliding contact with an outer sliding contact surface formed on an outer side of the intermediate claw, and a chuck surface formed on an outer side of the chuck claw is brought into contact with a workpiece, and a collet support member that receives a force in an axial direction and supports the first collet movably in the axial direction.

An electrospindle includes a motor for the movement of a tool, a pulling shaft configured to be coupled to the tool and coupled to the motor for the transmission of motion from the motor to the tool, a rotating element connected to the pulling shaft, and a joint stably coupled to the motor and having a through hole arranged to be hit on a first side by a first end of the rotating element. The joint is provided with a fitting for connection to a water supply pipe in the electrospindle that is arranged at a second side of the through hole opposite to the first side. A water sensor is interposed between the fitting and the first side of the through hole so as to detect the passage of water from the through hole in the direction of the motor.

An electrospindle includes a motor for the movement of a tool, a pulling shaft configured to be coupled to the tool and coupled to the motor for the transmission of motion from the motor to the tool, a rotating element connected to the pulling shaft, and a joint stably coupled to the motor and having a through hole arranged to be hit on a first side by a first end of the rotating element. The joint is provided with a fitting for connection to a water supply pipe in the electrospindle that is arranged at a second side of the through hole opposite to the first side. A water sensor is interposed between the fitting and the first side of the through hole so as to detect the passage of water from the through hole in the direction of the motor.