Patent ID: 8047111

Claim:
A miter saw comprising: a base that supports a workpiece thereon; a turntable supported on the base and rotatable about a rotation axis relative to the base; a circular saw unit that rotatably supports a circular saw blade; a support section provided to the turntable and pivotally movably supporting the circular saw unit at a position above the turntable; an adjustment mechanism disposed between the base and the turntable and configured to perform fine adjustment as to a rotation angle of the turntable relative to the base; a lock receiving portion provided at one of the base and the turntable and defining a predetermined rotation angle of the turntable; a locking portion engageable with the lock receiving portion and provided at the other of the base and the turntable so as to fix the turntable at the predetermined rotation angle; and a fixing device that fixes the turntable to the base at any rotational position of the turntable within a rotationally movable range of the turntable relative to the base, the fixing device defining an axial direction and being provided at the turntable, and the fixing device being movable in the axial direction and in a direction substantially perpendicular to the axial direction, the adjustment mechanism being directly in contact with the fixing device; wherein the fixing device is selectively movable, dependent on a position of the fixing device in the axial direction, to one of (a) an open position in which the fixing device is out of contact with the base and allowing the turntable to be freely rotated relative to the base, (b) a full fixing position where the rotational position of the turntable relative to the base is fully fixed with a fixing force and in which the fixing device is in contact with the base and is immovable in the direction substantially perpendicular to the axial direction, and (c) a temporary fixing position where free rotational movement of the turntable relative to the base is constrained with a force smaller than the fixing force and in which the fixing device is in contact with the base and movable in the direction substantially perpendicular to the axial direction; and wherein the adjustment mechanism is only operable to perform the fine adjustment as to the rotation angle of the turntable relative to the base by adjusting a position of the fixing device relative to the turntable in the direction substantially perpendicular to the axial direction when the fixing device is at (c) the temporary fixing position and when the locking portion is out of engagement from the lock receiving portion.