Miter saw having a light beam alignment system

摘要

A miter saw (10) comprises a motor (22) having a spindle (44); a saw base (14); an arm (20) connecting the motor (22) to the saw base (14); a blade (12) secured to the spindle (44) and rotated by the motor (22) to cut a workpiece (18) disposed on the saw base (14); an arbor (42) secured to the spindle (44), the arbor (42) including an arbor base (64) having a first arcuate surface (82); a light source (68) emitting a narrow beam of light, the light source (68) having a housing (84) including a second arcuate surface (86), mating with the first arcuate surface (82) of the arbor (42) and movably fixable relative thereto about an axis orthogonal to the light beam in order to precisely align the narrow beam of light relative to the blade (12) for providing a visual indication of the alignment of the blade (12) with the workpiece (18).