A method for slicing a workpiece with a wire saw which includes a wire row formed by winding a fixed abrasive grain wire having abrasive grains secured to a surface thereof around multiple grooved rollers, the method including feeding a workpiece to the wire row for slicing while allowing the fixed abrasive grain wire to reciprocatively travel in an axial direction thereof, thereby slicing the workpiece at multiple positions aligned in an axial direction of the workpiece simultaneously. The method includes: supplying a coolant for workpiece slicing onto the wire row when the workpiece is sliced with the fixed abrasive grain wire; and supplying a coolant for workpiece drawing, which differs from and has a higher viscosity than the coolant for workpiece slicing, onto the wire row when the workpiece is drawn out from the wire row after the slicing of the workpiece.

A cutting apparatus and the method of operating same is provided. The apparatus includes a feed tower assembly configured to be attached to an object and a frame assembly movably attached thereto. The frame assembly has arm assemblies thereon which accept a cutting member. At least one arm assembly can be pivoted relative to the other arm assembly and relative to the feed tower assembly. One arm assembly can further be moved relative to the other arm assembly and relative to the feed tower assembly in a vertical direction.

Provided are an apparatus and a method for machining cylindrical grooves by multi-wire cutting of profiles, the apparatus includes a driving guide roller and a driven guide roller in a guide roller assembly with axes thereof disposed parallelly and symmetrically, a tension wheel further disposed between the driving guide roller and the driven guide roller, a cutting wire clamped in grooves of the driving guide roller and the driven guide roller and perpendicular to a central axis of a workpiece, and a plurality of segments of the cutting wire forming a cutting wire group mesh surface; and a plurality of grooves are machined simultaneously on the cylindrical surface of the workpiece by the wire group mesh surface, and the cutting wire forms a machining pressure under an action of tension wheel, which can feed smoothly and ensure the accuracy and machining efficiency of the grooves.

A rotary-mechanical device, capable of extracting energy from a fluid flow and converting it into rotational motion, may comprise a turbine rotor. This turbine rotor may have an exterior surface extending between two opposing sides. The exterior surface may be formed of a plurality of straight lines, each spanning from a first edge, bordering one of the sides, to a second edge, bordering the opposite side. Each of the straight lines may be disposed in an individual plane running perpendicular to a rotational axis of the turbine rotor, wherein the rotational axis is positioned equidistant between the two sides. A turbine rotor of this type may be formed from a unitary mass by degrading the mass with a wire that may be translated and rotated relative to the mass during degradation.

A metal wire containing tungsten is provided. A tungsten content of the metal wire is at least 90 wt %. A tensile strength of the metal wire is at least 4000 MPa. An elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa. A diameter of the metal wire is at most 60 m. An average crystal grain size of the metal wire in a cross-section orthogonal to an axis of the metal wire is at most 0.20 m.

The invention relates to a wire management system for a wire saw having a cutting wire guided through a cutting area. The system comprises a wire supplying unit for supplying cutting wire to the cutting area and a wire receiving unit for receiving cutting wire from the cutting area. At least one of the wire supplying unit and the wire receiving unit comprises: at least one rotatable reservoir spool for carrying the cutting wire in overlapping windings, at least one rotatable storage spool for temporarily receiving the cutting wire in windings, wherein the rotational axis of the storage spool coincides with the rotational axis of the reservoir spool, a wire guiding means for guiding the wire when being wound up on the storage spool, such that the wire windings on the storage spool do not overlap each other and/or have a lower density than the windings on the reservoir spool.

A wire saw includes a U-shaped cutting area. An endless sawing wire loop runs between a plurality of wire pulleys including at least two displaceable cutting area pulleys, displaceable wire tensioning pulleys and wire plane changing pulleys. The endless wire loop defines a first cutting area plane P1 in the U-shaped cutting area and at least one further wire loop plane dissimilar from the first cutting area plane. The wire plane changing pulleys guide the sawing wire between the first cutting area plane and the further wire loop plane P2. A wire driving pulley is driven by a wire drive motor. A cutting area pulley actuator runs the cutting area pulleys along each side of the workpiece cutting area. The displaceable wire tensioning pulleys are displaceable by at least one tensioning actuator within the further wire loop plane P2 to maintain a tensioned sawing wire.

The invention relates to a wire management system (7) for a wire saw (8) having a cutting wire (3) which is guided through a cutting area (13), the wire management system (7) comprising a wire supplying unit (5) for supplying cutting wire (3) to the cutting area (13) of the wire saw (8) and a wire receiving unit (6) for receiving cutting wire (3) from the cutting area (13) of the wire saw (8), wherein at least one of the wire supplying unit (5) and the wire receiving unit (6) comprises: at least one rotatable reservoir spool (1) for carrying the cutting wire (3) in overlapping windings, at least one rotatable storage spool (2) for temporarily receiving the cutting wire (3) in windings, wherein the rotational axis (2b) of the storage spool (2) coincides with the rotational axis (1 b) of the reservoir spool (1), a wire guiding means (9) for guiding the cutting wire (3) when being wound up on the storage spool (2), such that the wire windings on the storage spool (2) do not overlap each other and/or have a lower density than the windings on the reservoir spool (1).

A method for cutting a starting panel of mineral wool or porous construction material into several panels includes supplying a starting panel having a front edge and cutting the panel into two in its thickness by a wire by moving the panel in a direction (X). The wire passes in a direction (Y) perpendicular to the direction (X) to form two first panels. The method also includes cutting the rear edge of the two first panels and the front edge of two second panels by moving the wire in a direction (Z) perpendicular both to the direction (X) and to the direction (Y), cutting the panel into two in its thickness using the wire by moving the panel in the direction (X) to form the two second panels, and repeating the cutting front/rear edges and cutting in the thickness to form two third, fourth, etc. panels.

A wire saw having a wire drive and a wire store for a saw wire, in which an actuating device for tautening the saw wire is arranged on a drive and storage unit of the wire saw. Also provided is a system made up of a wire saw and a remote control device, wherein the actuating device is a constituent of the remote control device. The invention relates to a method, and to the use of an actuating device for tautening a saw wire in a wire saw, wherein the actuating device is arranged on a drive and storage unit of the wire saw or is a constituent of a remote control device.