A wet cutting saw for cutting a ground portion, the wet cutting saw including a blade rotatable about an axis, a liquid feed conduit for feeding liquid onto a surface of the blade as it rotates, a frame for carrying the blade and configured to travel over a surface of the ground portion, and a mounting assembly that mounts the blade to the frame, at least part of the mounting assembly pivotable relative to the frame to raise and lower the blade relative to the frame.

A method for detection of a fault in a sensing cable within a saw detects potential failures in a sensing cable that is part of an object detection system in the saw. The method includes generating a predetermined excitation signal transmitted through a first conductor and a second conductor in the sensing cable, detecting a return signal from the first conductor and the second conductor in the sensing cable in response to the predetermined excitation signal, identifying a signal-to-noise ratio (SNR) of the return signal, and generating an output indicating a fault in the sensing cable in response to the SNR of the return signal being below a predetermined value.

A method for detection of a fault in a sensing cable within a saw detects potential failures in a sensing cable that is part of an object detection system in the saw. The method includes generating a predetermined excitation signal transmitted through a first conductor and a second conductor in the sensing cable, detecting a return signal from the first conductor and the second conductor in the sensing cable in response to the predetermined excitation signal, identifying a signal-to-noise ratio (SNR) of the return signal, and generating an output indicating a fault in the sensing cable in response to the SNR of the return signal being below a predetermined value.

A positioning device for a miter saw includes a working table, an elastic member, and a lever member. The elastic member has a movable portion adapted to be adjacent to a scale disc of the miter saw, and a protruding portion. The lever member is disposed in the working table, and has a linking portion connected to the movable portion, and a handle portion movable to convert the elastic member from a locking state for engaging the protruding portion with one of notches in a scale disc of the miter saw so that the working table is non-rotatable, to a releasing state for moving the movable portion away from the scale disc so that, the protruding portion is disengaged from the one of the notches to permit rotation of the working table.

A machine (1) for machining slab materials (3) is described, comprising: a working plane (2) configured to support a slab material (3) to be machined; a first tool-holder electrospindle (11) associated to a respective supporting body (33), the first electrospindle (11) and the respective supporting body (33) being supported above said working plane (2) by a respective supporting equipment (12) perpendicularly with respect to the working plane (2) and configured to move the first electrospindle (11) and the respective supporting body (33) about a rotation axis (Z) perpendicular to the working plane (2); a moving apparatus (14) configured to move the equipment (12) in parallel to the working plane (2) and along directions (X, Y) perpendicular to one another; at least a second tool-holder electrospindle (45), rotationally and translationally integral with the first electrospindle (11), supported above the working plane (2) in parallel to the first electrospindle (11) by a respective supporting arm (47) slidably supported by the supporting body (33) of the first electrospindle (11); a first actuator device (55) active to move the supporting arm (47) and the second electrospindle (45) supported by the same towards and away from the first electrospindle (11) in parallel to the working plane (2) and along a direction substantially perpendicular to a cutting plane extending perpendicularly to the working plane (2); and a second actuator device (63) associated to the supporting arm (47) of the second electrospindle (45) and configured to move the second electrospindle (45) along a direction perpendicular to the working plane (2) independently of the first electrospindle (11).

A machine (1) for machining slab materials (3) is described, comprising: a working plane (2) configured to support a slab material (3) to be machined; a first tool-holder electrospindle (11) associated to a respective supporting body (33), the first electrospindle (11) and the respective supporting body (33) being supported above said working plane (2) by a respective supporting equipment (12) perpendicularly with respect to the working plane (2) and configured to move the first electrospindle (11) and the respective supporting body (33) about a rotation axis (Z) perpendicular to the working plane (2); a moving apparatus (14) configured to move the equipment (12) in parallel to the working plane (2) and along directions (X, Y) perpendicular to one another; at least a second tool-holder electrospindle (45), rotationally and translationally integral with the first electrospindle (11), supported above the working plane (2) in parallel to the first electrospindle (11) by a respective supporting arm (47) slidably supported by the supporting body (33) of the first electrospindle (11); a first actuator device (55) active to move the supporting arm (47) and the second electrospindle (45) supported by the same towards and away from the first electrospindle (11) in parallel to the working plane (2) and along a direction substantially perpendicular to a cutting plane extending perpendicularly to the working plane (2); and a second actuator device (63) associated to the supporting arm (47) of the second electrospindle (45) and configured to move the second electrospindle (45) along a direction perpendicular to the working plane (2) independently of the first electrospindle (11).

A twin-head bar cutting device includes a first cutting head and a first bar holding device as well as a second cutting head and a second bar holding device placed on a common base. The base includes a first placement surface on which the first cutting head is placed, a second placement surface on which the second cutting head is placed, and a holding device placement surface formed higher than the first placement surface and the second placement surface between the first placement surface and the second placement surface and on which the first bar holding device and the second bar holding device are placed, and the first cutting head and the second cutting head are arranged symmetrically about a vertical plane passing through a center in a width direction of the base.

A safety system is provided for a machine tool, having a tool, having a clamping device, arranged movably on a frame of the machine tool, for the tool. The clamping device is movable by a movement device from a working position, in which the tool can be used for working and in which the tool poses a risk of injury to a user, into a safety position, in which the tool poses substantially no risk of injury to the user. The movement device has at least two equally or oppositely magnetized and/or magnetizable magnetic means, of which at least a first magnetic means is connected to or arranged on the tool and at least one second magnetic means is connected to or arranged on the frame, such that the movement of the tool by the movement device from the working position into the safety position can be triggered and/or at least partially performed by magnetic force.

The invention discloses an automatic cooling and steel cutting device, which includes a casing, wherein the right end of the casing is provided with a conveying cavity, a connecting cavity and a driving cavity, the conveying cavity is provided with a conveying mechanism for pushing steel for cutting and the opening is upward, the connecting cavity is provided with a lifting mechanism for lifting the cutting part, the lower side of the connecting cavity is provided with a cutting mechanism for cutting steel. The device can cut off the steel evenly by itself when it is in use. During the cutting process, it will automatically spray water to cool down the steel and the cutter, so as to reduce the damage. After each section is cut, the cutter will automatically lift up to prepare the next section of steel cutting of wood.

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.