An electronic component removal device comprising a cutting wire routed through a cutting region configured to receive an electronic component coupled to a substrate. The electronic component removal device can also include a leading actuator coupled to a leading end of the cutting wire to cause movement of the cutting wire in a cutting direction at a cutting speed. The electronic component removal device can further include a trailing resistance device coupled to a trailing end of the cutting wire to resist movement of the cutting wire in the cutting direction with a variable resistance. In addition, the electronic component removal device can include a leading tension sensor to sense a leading tension in the cutting wire between the cutting region and the leading actuator. The trailing resistance device can resist movement of the cutting wire with a resistance that varies based on the leading tension in the cutting wire.

A pivotable wire deflector 19 for a saw wire 3 of a wire saw 1 has a deflection roller 32, a pivot joint 60 and a clamping and spreading mechanism. The defection roller 32 has a running groove 45 for guiding the saw wire 3 of the wire saw 1. The pivot joint 60 has a rotary bearing block with a cylindrical receptacle 65, and a tube 63 which is arranged so as to be rotatable in the cylindrical receptacle, wherein the deflection roller 57 is attached to the one of rotary bearing block 62 or tube 63. A clamp 70 is fastened to the rotary bearing block 62 and arranged so as to enclose the tube 63. A lever 68 can be moved manually between a first position and a second position.

A diamond wire cutter, using an adjustable length pulley system, a diamond wire saw, and a movable pulley cart, can perform a through-cut of complete sections of a structure such as a tubular subsea by fitting a chain about an outer surface of the structure, securing the chain to the movable pulley cart and using the chain to move or otherwise guide the movable pulley cart about the outer circumference of the structure to cut while using a diamond wire to effect a cut between the movable pulley cart and the diamond wire saw.

A wire saw for cutting pipe is provided including a saddle forming a saddle surface for abutting against a cylindrical pipe, an elongate guide fixed to the saddle, a bow having a first and second end, a bridge portion joining the first and second ends, and an open end having a length L from the first end to the second end which is greater than a diameter D of the pipe, a wire loop movable along a track formed within the bow, and a cooling system for actively cooling the wire loop. The elongate guide has an axis approximately perpendicular to an axis of the pipe when the pipe is abutting against the saddle. An exposed portion of the wire loop extends across the open end. The bow is moveable on the elongate guide toward and away from the pipe when the pipe is abutting against the saddle.

A wire saw for cutting pipe is provided including a saddle forming a saddle surface for abutting against a cylindrical pipe, an elongate guide fixed to the saddle, a bow having a first and second end, a bridge portion joining the first and second ends, and an open end having a length L from the first end to the second end which is greater than a diameter D of the pipe, a wire loop movable along a track formed within the bow, and a cooling system for actively cooling the wire loop. The elongate guide has an axis approximately perpendicular to an axis of the pipe when the pipe is abutting against the saddle. An exposed portion of the wire loop extends across the open end. The bow is moveable on the elongate guide toward and away from the pipe when the pipe is abutting against the saddle.

A thin section bearing unit (10) for multiwire machines. The bearing unit has a central axis (A) of rotation, an inner ring (20), and a flanged rotatable outer ring (30). Defined between the inner and outer rings is a cylindrical cavity (90) for respective rolling elements (40). The inner ring (20) has an outer raceway (22) with an intermediate circumferential groove (23) containing lubricating grease for keeping the raceway (22) lubricated. The bearing unit (10) also has a hydraulic network (60) for distributing the lubricating grease for lubricating the cavity (90). The hydraulic network (60) including at least one axial duct (61) passing through the inner ring (20) and a related radial duct (62) formed in the inner ring (20) between the duct (61) and the circumferential groove (23) of the outer raceway (22).

A deflection roller (32) for a deflection roller package (33) of a wire saw (1), having a wheel (32), a pivot bearing (42) and a sealing element (55). The wheel (32) has a raceway (45) along the periphery thereof for guiding a saw wire (3) of the wire saw (1). The pivot bearing (42) is coaxially inserted in the wheel (32). An outer sleeve (51) protrudes from a lateral surface (49) of the wheel (32). An inner sleeve (50) protrudes from a lateral surface opposite the one lateral surface (49). A radius (53) of the inner sleeve (50) is smaller than a radius (52) of the outer sleeve (51). The sealing element (55) is placed on the outer sleeve (51) or inserted into the inner sleeve (50).

A method for slicing a workpiece into wafers by imparting axial reciprocating motion to a wire wound around a plurality of grooved rollers, and moving the workpiece relatively downwardly to press the workpiece against the reciprocating wire and feed the workpiece with the workpiece cut into while supplying a slurry to the wire, the method including the steps of: configuring each of the grooved rollers such that a distance from a bottom of grooves of the grooved roller to a rotating shaft of the grooved roller decreases gradually from a wire-supply side toward a wire-collection side; slicing the workpiece in such a manner that the workpiece is pressed against the wire on the wire-supply side before the workpiece is pressed against the wire on the wire-collection side.

A device for cutting a wire piece, configured to move with respect to the wire piece, including: at least first and second rotary members rotating around respective first and second substantially parallel axes of rotation, the at least one first and second rotary members driving the wire substantially perpendicular to the first and second axes, the wire resting against external surfaces of each of the at least one first and second rotary members. At least one of the at least one first and second rotary members includes a lubrication mechanism of the wire to allow circulation of a lubricating liquid from the center thereof to an external surface thereof in contact with the wire, the lubrication mechanism including a lubrication liquid feed device, mounted on the axis of rotation of the at least one of the first and second rotary members, to supply the center thereof with lubrication liquid.

A wire take-up and pay-off device, including: a wire take-up and pay-off driver; a rotating shaft, which has a rear end connected with the wire take-up and pay-off driver; a front stop sleeve, fixedly sleeved on a front end of the rotating shaft and rotating synchronously with the rotating shaft; a rear stop sleeve, fixedly sleeved on the rear end of the rotating shaft and rotating synchronously with the rotating shaft; and a wire roller, fixedly sleeved outside of the front stop sleeve and the rear stop sleeve and rotating synchronously with the front stop sleeve and the rear stop sleeve. Further included is a slicing machine having the wire take-up and pay-off device. The wire take-up and pay-off device and the slicing machine have small volumes, thereby facilitating assembly, hoisting and transportation.