A method of assembling a gearcase cover assembly of a reciprocating saw. The method includes providing a gearcase cover with a cylindrical opening and a receiving portion, providing a shaft with a yoke affixed to the shaft, inserting a first end of the shaft into the cylindrical opening and rotating the shaft such that a second end of the shaft sits in the receiving portion.

A reciprocating saw includes a housing, a motor, and a drive mechanism. The drive mechanism includes a driven gear that is rotated by the motor. The driven gear is vertically-oriented within the housing. The drive mechanism also includes a drive arm coupled to the driven gear to translate rotary motion of the driven gear into reciprocating motion, and an output shaft coupled to the drive arm to reciprocate relative to the housing along a spindle axis through a cutting stroke and a return stroke. The drive mechanism further includes a counterweight coupled to the driven gear and rotating with the driven gear through a path and in a same direction. As the counterweight moves through a rearward half of the path, the counterweight generally moves in an upward direction, and as the counterweight moves through a forward half of the path, the counterweight generally moves in a downward direction.

A reciprocating saw includes a housing, a motor, and a drive mechanism. The drive mechanism includes a driven gear that is rotated by the motor. The driven gear is vertically-oriented within the housing. The drive mechanism also includes a drive arm coupled to the driven gear to translate rotary motion of the driven gear into reciprocating motion, and an output shaft coupled to the drive arm to reciprocate relative to the housing along a spindle axis through a cutting stroke and a return stroke. The drive mechanism further includes a counterweight coupled to the driven gear and rotating with the driven gear through a path and in a same direction. As the counterweight moves through a rearward half of the path, the counterweight generally moves in an upward direction, and as the counterweight moves through a forward half of the path, the counterweight generally moves in a downward direction.

An accessory for use with an oscillating power tool. The accessory includes an attachment portion including a mounting aperture arrangement configured to couple with the oscillating power tool. The accessory also includes a body extending away from the attachment portion in a longitudinal direction defining a longitudinal axis, a distal end portion including a generally planar surface and a cutting edge configured to perform a material-removing operation, and a conduit extending from proximate the cutting edge towards the attachment portion. The conduit is configured to convey material removed during the material-removing operation towards a vacuum system.

A reciprocating cutting tool allows a more stable operation. A reciprocating saw includes a motor extending vertically, a reciprocating transmitter located below the motor, a slider extending in a front-rear direction, connected to the reciprocation transmitter, and movable in the front-rear direction, a power housing holding the motor and the reciprocation transmitter, a grip housing extending rearward from the power housing, a battery housing located behind the grip housing, and a connecting housing located below the grip housing and connecting the power housing to the battery housing.

A reciprocating cutting tool allows a more stable operation. A reciprocating saw includes a motor extending vertically, a reciprocating transmitter located below the motor, a slider extending in a front-rear direction, connected to the reciprocation transmitter, and movable in the front-rear direction, a power housing holding the motor and the reciprocation transmitter, a grip housing extending rearward from the power housing, a battery housing located behind the grip housing, and a connecting housing located below the grip housing and connecting the power housing to the battery housing.

A reciprocating saw includes a housing, a motor positioned within the housing, the motor including a pinion rotatable about a motor axis, and a drive mechanism positioned within the housing and coupled to the motor. The drive mechanism includes a driven gear that engages the pinion and is rotated by the motor, and an output shaft driven by the motor to reciprocate relative to the housing. The output shaft is configured to support a tool element adjacent a forward portion of the housing. The drive mechanism includes a first counterweight coupled to the driven gear for rotation with the driven gear about a rotational axis, and a second counterweight spaced apart from the first counterweight and integrally formed with the driven gear. The first counterweight and the second counterweight are driven by the motor to rotate relative to the housing along a path.

A reciprocating saw includes a housing, a motor positioned within the housing, the motor including a pinion rotatable about a motor axis, and a drive mechanism positioned within the housing and coupled to the motor. The drive mechanism includes a driven gear that engages the pinion and is rotated by the motor, and an output shaft driven by the motor to reciprocate relative to the housing. The output shaft is configured to support a tool element adjacent a forward portion of the housing. The drive mechanism includes a first counterweight coupled to the driven gear for rotation with the driven gear about a rotational axis, and a second counterweight spaced apart from the first counterweight and integrally formed with the driven gear. The first counterweight and the second counterweight are driven by the motor to rotate relative to the housing along a path.

A reciprocating tool employs a motor gear of a drive motor to rotate a drive shaft. When the drive shaft rotates, a sliding member disposed into a ball rolling groove will move along the path of the ball rolling groove. At the same time, for the restriction of annular fixing member, the component force of the sliding member in an axial direction pushes a driven shaft to move back and forth repeatedly along the axial direction, so that a tool fixed on the driven shaft will also back and forth repeatedly in the axial direction, and thus a high efficient reciprocating tool is achieved.

A hand-held power tool drive device includes at least one wobble drive unit that has at least one rotatably mounted drive element, with at least one wobble unit positioned on the at least one drive element. The drive device also includes at least one counterweight unit that has at least one movably mounted compensating element configured to be driven by the at least one wobble unit. The at least one wobble unit includes at least one force application point that is configured to drive the at least one compensating element. An axis extending through a rotational axis of the at least one drive element and the at least one force application point encloses an angle of between 0° and 135° with a wobble element longitudinal axis of a wobble element of the at least one wobble unit.