Abstract: A transmission device is adapted for use in a table saw, and includes a bracket and a lifting seat that is movably mounted to the bracket. The transmission device includes a motor, a speed reduction unit, and a saw blade unit. The motor is adapted to be mounted to the lifting seat and has a rotatable central shaft. The speed reduction unit is adapted to be mounted to the lifting seat, is connected to the central shaft, and is driven rotatably by the motor. The saw blade unit includes an output shaft adapted for connection to the lifting seat, extending along a second axis, and driven by the speed reduction unit, and a blade member connected co-rotatably to the output shaft, and having a portion that is adapted to be received in the bracket.

Abstract: A workpiece supporting device of a circular sawing machine includes a base frame for rotatably supporting a worktable and having an arcuate surface region which defines an angularly extending guiding route. A platform is disposed on and is movable along the guiding route, and has an upper mounting surface that cooperates with the worktable to support a workpiece. A tightening mechanism is displaceable between unmovable and movable positions, where the platform is brought into tight and loose engagements with the arcuate surface region. An actuator is coupled with the tightening mechanism is operable to displace the tightening mechanism. The platform is movable along the guiding route when the tightening mechanism is in the movable position such that the worktable is turnable within a relatively large angular range.

Abstract: A sawdust collection apparatus for a compound miter saw includes a turntable and a sawdust collection assembly. The turntable is rotatably mounted on a base and has a cutting groove defined in the turntable and a sawdust guide communicating with the cutting groove. The sawdust collection assembly has a hollow sawdust duct with a sawdust channel communicating with the sawdust guide and a hollow sawdust entry duct with a sawdust entry port to receive sawdust and debris and a sawdust passage to communicate with the sawdust entry port. The sawdust channel is connected to a vacuum cleaner to efficiently pull sawdust and debris out of the miter saw through the sawdust channel and the sawdust passage.

Abstract: A sawing path indicating circular saw includes a circular saw blade rotatably mounted on a saw blade shaft about a blade axis and having left and right major surfaces and a blade edge periphery, a seat member disposed on the saw blade shaft adjacent to the left major surface and rotated with the saw blade shaft, and an illuminating unit disposed on the seat member. Light emitted from the illuminating unit is directed radially and outwardly to project on a light reflecting area of the blade edge periphery and is reflected by the left major surface so as to create a bright region and a dim region on a surface of a workpiece, thereby forming a sharp demarcation line to indicate a sawing path of the saw blade.

Abstract: An adjustment device for a compound miter saw includes a base having a top and a miter lip with detents, a turntable having a bottom and a miter assembly. The turntable is rotatably mounted on the top of the base, and the miter assembly is attached to the bottom of the turntable. The miter assembly includes a resilient biasing member having an engaging stop corresponding to the detents, a releasing rod rotatably mounted in the turntable, and an eccentric rotator having an eccentric portion and attached to the releasing rod corresponding to the resilient biasing member. The releasing rod rotates the eccentric rotator so the eccentric portion will push the engaging stop upward to disengage it from the detents to allow the turntable to be adjusted.

Abstract: A guard assembly for a compound miter saw includes an upper blade guard assembly, a lower blade guard assembly having a movable guard pivotally mounted in the upper blade guard assembly and a linkage assembly. The lower blade guard is pivotally mounted in the upper blade guard assembly. The linkage assembly including an inner link pivotally interconnected with the movable guard and the upper blade guard assembly controls the movement of the guard. A lock release mounted on the upper blade guard assembly locks the movable guard in position.

Abstract: A sawdust collection apparatus for a compound miter saw includes a turntable and a sawdust collection assembly. The turntable is rotatably mounted on a base and has a cutting groove defined in the turntable and a sawdust guide communicating with the cutting groove. The sawdust collection assembly has a hollow sawdust duct with a sawdust channel communicating with the sawdust guide and a hollow sawdust entry duct with a sawdust entry port to receive sawdust and debris and a sawdust passage to communicate with the sawdust entry port. The sawdust channel is connected to a vacuum cleaner to efficiently pull sawdust and debris out of the miter saw through the sawdust channel and the sawdust passage.

Abstract: A guard assembly for a compound miter saw includes an upper blade guard assembly, a lower blade guard assembly having a movable guard pivotally mounted in the upper blade guard assembly and a linkage assembly. The lower blade guard is pivotally mounted in the upper blade guard assembly. The linkage assembly including an inner link pivotally interconnected with the movable guard and the upper blade guard assembly controls the movement of the guard. A lock release mounted on the upper blade guard assembly locks the movable guard in position.

Abstract: An adjustment device for a compound miter saw includes a base having a top and a miter lip with detents, a turntable having a bottom and a miter assembly. The turntable is rotatably mounted on the top of the base, and the miter assembly is attached to the bottom of the turntable. The miter assembly includes a resilient biasing member having an engaging stop corresponding to the detents, a releasing rod rotatably mounted in the turntable, and an eccentric rotator having an eccentric portion and attached to the releasing rod corresponding to the resilient biasing member. The releasing rod rotates the eccentric rotator so the eccentric portion will push the engaging stop upward to disengage it from the detents to allow the turntable to be adjusted.

Abstract: A cutter guard device is adapted for use in a belt saw machine, and includes a stationary hinge leaf formed with a first knuckle unit, a movable hinge leaf formed with a second knuckle unit, and a hinge pin extending through the first and second knuckle units, thereby permitting rotation of the movable hinge leaf between cutter concealing and cutter exposing positions. The movable hinge leaf is further slidable along the hinge pin between retaining and pivoting positions. The movable hinge leaf is movable between the cutter concealing and cutter exposing positions when disposed in the pivoting position on the hinge pin. A retention unit retains releasably the movable hinge leaf in the cutter concealing position when the latter is further disposed in the retaining position on the hinge pin.

Abstract: A cutter guard device is adapted for use in a belt saw machine, and includes a stationary hinge leaf formed with a first knuckle unit, a movable hinge leaf formed with a second knuckle unit, and a hinge pin extending through the first and second knuckle units, thereby permitting rotation of the movable hinge leaf between cutter concealing and cutter exposing positions. The movable hinge leaf is further slidable along the hinge pin between retaining and pivoting positions. The movable hinge leaf is movable between the cutter concealing and cutter exposing positions when disposed in the pivoting position on the hinge pin. A retention unit retains releasably the movable hinge leaf in the cutter concealing position when the latter is further disposed in the retaining position on the hinge pin.