A power tool, such as a cast saw is disclosed. The cast saw is equipped with at least one thermocouple and and/or at least one infrared detector that measure the temperature of the cutting blade on the cast saw or the area in the cast immediately surrounding the cutting blade. The cast saw is also equipped with at least one LED that can alert a user of the cast saw when blade or the area in the cast immediately surrounding the blade is approaching or has reached a temperature that may burn a patient. Also disclosed is a shroud for the cutting blade of the cast saw. The shroud not only surrounds at least part of the blade but also houses the thermocouple or infrared detector and the LEDs(s). A method of operating the cast saw to cut a cast off of a patient is also disclosed.

A training system comprises a training stand, a width, a length, a spacing measurement assembly, a training assembly, and a controller. each among a plurality of blade disks comprise a blade disk having a body portion, a center aperture, a diameter, a plurality of punched teeth, a sharpened edge, a center point, an outer edge and a center aperture diameter. portions of the plurality of blade disks comprises one or more misaligned disks and one or more nominal disks. The plurality of blade disks comprise at least a first disk and a last disk. each among the plurality of blade disks are attached to a mandrel along a center axis.

A system for protecting an operator (110) of a power tool may include a first set of wearable sensors (120) worn by the operator (110), a second set of wearable sensors (130) worn by the operator (110), a first tool sensor (122) disposed at the power tool where the first tool sensor (122) is configured to communicate with the first set of wearable sensors (120), a second tool sensor disposed (132) at the power tool where the second tool sensor (132) is configured to communicate with the second set of wearable sensors (130), and a controller (140). The controller (140) may be configured to determine, based on distances between the first tool sensor (122) and the first set of wearable sensors (120) and between the second tool sensor (132) and the second set of wearable sensors (130), whether to initiate a protective action with respect to the power tool.

A self-dust extraction dustless table saw includes a table saw frame, saw table, and saw blade installed to the table saw frame. An upper and a lower blade guards are respectively mounted to upper and lower sides of the saw table, the saw blade is mounted in the upper and lower blade guards, and the lower blade guard includes a lower left and lower-right blade guards. Several interval guide barriers are installed on the inner walls of the lower left and lower right blade guards, and the guide barriers transport the dust to a dust outlet on the side of the lower right blade guard.

A material removal system may control movement of a material removal machine based on whether a material removal tool is in contact with a sample. A material removal system may include a material removal machine (e.g., saw, grinder, polisher, and/or more general material preparation and/or testing machine) that is configured to move at the urging of one or more actuators. The system may further include control circuitry configured to control movement (and/or speed, acceleration, etc.) of the material removal machine (e.g., via the actuators) based on one or more power, thermal, position, and/or other parameters that indicate whether the material removal tool of the material removal machine is in contact with a sample.

A power saw machine for cutting a work piece includes a supporting frame, a cutting blade, and an environment control arrangement which includes a cutting table base, a sliding vacuum hood, and an outlet. The cutting table base is slidably supported by the supporting frame for supporting the work piece. The sliding vacuum hood has a narrow collecting chamber with a continuous inlet for directly contacting with the work piece to omit a spatial gap between the narrow collecting chamber and the work piece, wherein during the cutting process, a cutting portion of the cutting blade is entered into the narrow collecting chamber through the continuous inlet for cutting the work piece. The outlet is provided at the sliding vacuum hood for sucking residual debris of the work piece within the narrow collecting chamber during the cutting process.

In some examples, a material removal system may control movement of a material removal machine based on whether a material removal tool is in contact with a sample. A material removal system may include a material removal machine (e.g., saw, grinder, polisher, and/or more general material preparation and/or testing machine) that is configured to move at the urging of one or more actuators. The system may further include control circuitry configured to control movement (and/or speed, acceleration, etc.) of the material removal machine (e.g., via the actuators) based on one or more power, thermal, position, and/or other parameters that indicate whether the material removal tool of the material removal machine is in contact with a sample.

A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

A miter saw includes a worktable and a cutting unit. The cutting unit includes a movable arm pivotably connected with the worktable, a saw blade, a triggering switch and a tilt power-off module. The movable arm defines a reference plane which intersects a working surface of the worktable at an included angle. The tilt power-off module is disposed to detect the included angle and shift the triggering switch between a power-on state and a power-off state. The triggering switch is shifted to the power-off state when the tilt power-off module detects that the included angle is less than a predetermined breaking angle so as to prevent rotation of the saw blade in a folded position for safety purposes.

A cutting machine includes a cutting machine main body configured to cut a material transported along a longitudinal direction of a material into a plurality of cut materials, a material supply device and a product carrying-out device configured to carry the material into the cutting machine main body and to sort and carry out each of the plurality of cut materials into a product yard for accommodating a product or a residual material yard for accommodating a residual material of the material, respectively, and an NC device configured to control the cutting machine main body, the material supply device, and the product carrying-out device. The NC device is provided with a first operation mode for causing all of the plurality of cut materials to be carried out to the product yard 45.