A circular saw cutting machine (1) includes a machine main body (10), an articulated robot (60), and a cutter stocker (70). A circular saw (5) is secured and interposed by a cutter clamp cylinder (CYL21) between a front end face (32) of the main spindle (21) and a cutter presser piece (50) with pins (33, 51) inserted in pin insertion holes (5b). When removing the circular saw (5), a hydraulic is switched over to cause the cutter clamp cylinder (CYL21) to perform unclamping so that the cutter presser piece (50) can be pulled out of the main spindle (21). When the articulated robot (60) performs cutter change, a main spindle motor (M10) and a brake (25) are controlled based on the rotation angle detected by a spindle stop position sensor (SE10) to stop the main spindle (21) in a predetermined home angle condition.

An attachable and extendable saw and methods for cutting objects with the attachable and extendable saw are provided. The attachable and extendable saw can include a blade housing coupled to a main body. The blade housing at least partially covers a saw blade and the extendable member can be configured to move the saw blade with or without the blade housing between a retracted position and an extended position relative to the main body. The extendable saw can also include means to drive the saw blade, means to drive the extendable member, and means for attaching the attachable and extendable saw to the objects to be cut. Saw blade height adjustment means, handles for ease of use, and eyelets for tethering are provided. The saw blade is attached to the attachable and extendable saw via pins and fasteners.

An automated cutting for scenic flats construction system and method for cutting of wide dadoes accurately spaced along sets of multiple boards to be used as studs or stiles for scenic flats, cleanly and accurately across the boards in one pass for each wide dado cut. A controller controls the automatic operation. A main unit with a support stand and a main-unit shell provides a sled unit extending and retracting along linear-bearing tracks by operation of sled actuators controlled by the controller. The sled unit provides a wide one-pass dado blade assembly capable of cutting a wide dado across multiple boards in one pass as the sled unit is moved along the linear-bearing tracks by the sled actuators under the control of the controller. After initial positioning of the set of uncut boards on an infeed table and against a positioning stop, the set of boards is held in place by hold-down clamps, the wide dado cut is made in one pass of the sled unit with the wide one-pass dado blade assembly, the hold-down clamps are released, the set of boards is moved through the main unit and toward a receiving table by a pre-set distance by a driving dog on a drive chain, the hold-down clamps are activated, and another wide dado cut is made in one pass, all under the control of the controller, repeating until all dado cuts are made to the set of boards.

A power saw system including a workstation having a table top surface, a saw arm coupled to the workstation at a first hinge member, the saw arm being configured to pivot toward and away from the table top surface about the first hinge member, a circular saw coupled to a distal end of the saw arm, and a second hinge member provided to the saw arm between the first hinge member and the circular saw, the second hinge member configured such that circular saw can be selectively rotated about the second hinge member in a direction lateral to an axis of the saw arm.

A miter saw has a base assembly, a table rotatably disposed on the base assembly, a support section rotatably connected to the table, a guide bar fixedly attached to and extending forwardly from the support section, and a saw assembly sliding along the guide bar. The saw assembly is pivotable downwardly for cutting a workpiece disposed on the table. A handle is disposed adjacent to a forward end of the guide bar. The handle is movable between a first position for fixing a rotational position of the support section relative to the table, and a second position for allowing rotational movement of the support section relative to the table.

An extendable saw can include a blade housing coupled to a main body by at least one extendable member, the blade housing at least partially covers a saw blade and the extendable member can be configured to move the blade housing and the saw blade between a retracted position and an extended position relative to the main body. The extendable saw can also include a motorized unit coupled to the saw blade and configured to rotate or provide other blade movement to the saw blade and a switchable device or unit disposed on the main body and having at least one contact surface that is switchable between a magnetized or vacuum state and a non-magnetized state or non-vacuum state, respectively. The saw blade can be attached to or coupled to a base plate, shaft or arbor with fasteners that are flush or countersunk below a surface of the blade.

An extendable saw can include a blade housing coupled to a main body by at least one extendable member, the blade housing at least partially covers a saw blade and the extendable member can be configured to move the blade housing and the saw blade between a retracted position and an extended position relative to the main body. The extendable saw can also include a motorized unit coupled to the saw blade and configured to rotate or provide other blade movement to the saw blade and a switchable device or unit disposed on the main body and having at least one contact surface that is switchable between a magnetized or vacuum state and a non-magnetized state or non-vacuum state, respectively.

A rivering filtration system for a power saw machine includes a filtration tray having a filtration cavity for collecting operation fluid after the operation fluid is delivered onto the cutting blade, and a fluid collecting tray located underneath the filtration tray, wherein the fluid collecting tray has first and second cavities. The filtration tray provides a first filtration stage for filtrating the visible residual particles out from the operation fluid. The fluid collecting tray provides a second filtration stage that the operation fluid is slowly filled in the first cavity from the filtration cavity to ensure slurry residual particles in the operation fluid being deposited at the first cavity, and a third filtration stage that the operation fluid is slowly filled in the second cavity from the first cavity to ensure the slurry residual particles being filtrated out of the operation fluid.

A rivering filtration system for a power saw machine includes a filtration tray having a filtration cavity for collecting operation fluid after the operation fluid is delivered onto the cutting blade, and a fluid collecting tray located underneath the filtration tray, wherein the fluid collecting tray has first and second cavities. The filtration tray provides a first filtration stage for filtrating the visible residual particles out from the operation fluid. The fluid collecting tray provides a second filtration stage that the operation fluid is slowly filled in the first cavity from the filtration cavity to ensure slurry residual particles in the operation fluid being deposited at the first cavity, and a third filtration stage that the operation fluid is slowly filled in the second cavity from the first cavity to ensure the slurry residual particles being filtrated out of the operation fluid.

An attachable and extendable saw and methods for cutting an object on a work surface with the attachable and extendable saw are provided. The extendable saw can include a saw blade housing coupled to a main body by at least one extendable member, the saw blade housing at least partially covers a saw blade and the extendable member can be configured to move the saw blade housing and the saw blade between a retracted position and an extended position relative to the main body. The extendable saw can also include a motorized unit coupled to the saw blade and configured to rotate or provide other blade movement to the saw blade and a switchable device or unit disposed on the main body and having at least one contact surface that facilitates attachment of the extendable saw to the work surface, said contact surface being switchable between a magnetized or vacuum state and a non-magnetized state or non-vacuum state, respectively. Attachment of the saw blade to the attachable and extendable saw is provided for.