A foldable miter saw includes a base unit, a worktable unit rotatably mounted on the base unit and includes an axle block, a cutting unit having a rotatable member axially mounted to the axle block, an adjusting member adjustably mounted on the axle block, and a positioning device mounted on the rotatable member. Rotating the rotatable member relative to the axle block causes the cutting unit to be shifted between a working position where the adjusting member supports the positioning device in position and the end faces of the saw blade are kept perpendicular to the work surface, and a folded position where the adjusting member and the positioning device are separated from each other and one end face of the saw blade approaches the work surface.

Collapsible and transportable systems for supporting miter saw assemblies. In one illustrative embodiment, a table assembly has two opposite main nodes at either end that support an upper bench top therebetween. Two legs extend from each main node to support the table. Two parallel support members extends through the main nodes underneath the bench top. A saw support table may be removably securable to the parallel support members extending out past the bench and allows a miter saw secured thereto to be adjusted such that the miter saw cutting table is co-planar with the bench top. A sliding locking member may be attached to the bench top to define a fixed distance for the length of material being cut. A second saw support table may be disposed on folding adjustable legs attached to the legs extending from a main node to support a table saw coplanar with the bench top.

Collapsible and transportable systems for supporting miter saw assemblies. In one illustrative embodiment, a table assembly has two opposite main nodes at either end that support an upper bench top therebetween. Two legs extend from each main node to support the table. Two parallel support members extends through the main nodes underneath the bench top. A saw support table may be removably securable to the parallel support members extending out past the bench and allows a miter saw secured thereto to be adjusted such that the miter saw cutting table is co-planar with the bench top. A sliding locking member may be attached to the bench top to define a fixed distance for the length of material being cut. A second saw support table may be disposed on folding adjustable legs attached to the legs extending from a main node to support a table saw coplanar with the bench top.

The first rotation lock mechanism 31 is configured such that a screw force produced by a rotation operation of an operation member 33 is transmitted to a lock member 42 via a transmission bracket 36 and a transmission rod 40. Through minimizing the length of the screw shaft 35, the transmission bracket 36, and the transmission rod 40, the position of a lock member which a screw shaft 35 is brought into contact with and the screw force is directly applied to is arranged to be closer to a user in comparison with conventional prior art. As a result, transmission loss of the screw force can be reduced, enhancing accuracy and consistency for the fixing force with respect to the table can be improved.

The first rotation lock mechanism 31 is configured such that a screw force produced by a rotation operation of an operation member 33 is transmitted to a lock member 42 via a transmission bracket 36 and a transmission rod 40. Through minimizing the length of the screw shaft 35, the transmission bracket 36, and the transmission rod 40, the position of a lock member which a screw shaft 35 is brought into contact with and the screw force is directly applied to is arranged to be closer to a user in comparison with conventional prior art. As a result, transmission loss of the screw force can be reduced, enhancing accuracy and consistency for the fixing force with respect to the table can be improved.

An attachable rolling plate assembly which is attached as a single unit to a portable cutting tool to facilitate the safe rolling movement of the portable cutting tool on a workpiece. The invention comprises a frame assembly formed from a single piece of molded material such as fiber enriched high-impact nylon having a pair of oppositely disposed longitudinal sidewalls and a flat base portion having an opening through which a saw blade of a power saw extends. The invention also includes a cutting guide assembly to facilitate a straight cut, reduce torsional rotation of the saw blade and reduce kickback of the saw. A water spray hose is retained to spray water in front of a saw blade of a retained worm drive power saw.

An attachable rolling plate assembly which is attached as a single unit to a portable cutting tool to facilitate the safe rolling movement of the portable cutting tool on a workpiece. The invention comprises a frame assembly formed from a single piece of molded material such as fiber enriched high-impact nylon having a pair of oppositely disposed longitudinal sidewalls and a flat base portion having an opening through which a saw blade of a power saw extends. The invention also includes a cutting guide assembly to facilitate a straight cut, reduce torsional rotation of the saw blade and reduce kickback of the saw. A water spray hose is retained to spray water in front of a saw blade of a retained worm drive power saw.

A communication adapter 31 for conducting radio communication between a portable machining device 1 and a dust collector 40, such that the dust collector 40 may operate synchronously with the portable machining device 1 with respect to a start/stop operation when performing a cutting task is detachably incorporated in a handle 20 of the portable machining device 1. Because of this arrangement, a high level of dust-proof ability as well as ease of maneuverability in attaching and detaching the communication adapter 31 can be achieved.

A communication adapter 31 for conducting radio communication between a portable machining device 1 and a dust collector 40, such that the dust collector 40 may operate synchronously with the portable machining device 1 with respect to a start/stop operation when performing a cutting task is detachably incorporated in a handle 20 of the portable machining device 1. Because of this arrangement, a high level of dust-proof ability as well as ease of maneuverability in attaching and detaching the communication adapter 31 can be achieved.

Two 18V-type rechargeable batteries (31 and 31) are attached in series so as to allow a 36V-type tabletop cutting device (C1) to be utilized. By utilizing the 18V batteries which are highly prevalent for electric tools, it is possible to use the 36V-type tabletop cutting device (C1) as well as to reduce costs for the batteries.