Method for repairing the teeth of a toothed ring gear, the method using a removable machining device, including a frame and a part moving with respect to the frame, supporting a cutting member, the method including: attaching the machining device to the toothed ring gear by tightening the machining device onto the ring gear in an attachment position on the ring gear with respect to the tooth to be machined; machining the tooth in an automated manner by control of the cutting organ following predetermined machining operations, in which the machining device is moved from an attachment position on the toothed ring gear corresponding to the previously machined tooth, to an attachment position of a neighboring tooth to be machined, while the toothed ring gear is stationary, the machining device being suspended and held by at least one tensioned cable connected to the frame of the rotating machine.

A jig and tool are provided for rotating the tool around a pipe or pipeline, for truing the pipe end. An operator can easily installation the jig into the pipe end, with or without the cutting tool installed thereto. The tool can be manually or motor driven for rotation about the jig and the pipe end. The attachment of the tool to the jig enables alignment of the tool's cutting face with the pipe end, with angular and axial adjustment available for obtaining a profile suitable for welding to like pipe ends. In an embodiment, the tool can track the pipe diameter to retain alignment despite out-of-round dimensional variation. The tool is operated and rotated about the pipe end to remove material and, as necessary, the tool is adjusted into the pipe end and the rotation about the pipe end is repeated for incremental removal of material therefrom.

A jig and tool are provided for rotating the tool around a pipe or pipeline, for truing the pipe end. An operator can easily installation the jig into the pipe end, with or without the cutting tool installed thereto. The tool can be manually or motor driven for rotation about the jig and the pipe end. The attachment of the tool to the jig enables alignment of the tool's cutting face with the pipe end, with angular and axial adjustment available for obtaining a profile suitable for welding to like pipe ends. In an embodiment, the tool can track the pipe diameter to retain alignment despite out-of-round dimensional variation. The tool is operated and rotated about the pipe end to remove material and, as necessary, the tool is adjusted into the pipe end and the rotation about the pipe end is repeated for incremental removal of material therefrom.

A method for the in-situ reconditioning of a heavy workpiece mounted on the floor. The method comprises assembling a jig mounted on the floor so as to be arranged around the workpiece to be reconditioned, that is also mounted on the floor, the jig supporting a gantry at the two ends of same, on which there is mounted a precision robotic arm carrying at least one machining apparatus. The method also comprises the alignment of the workpiece and the jig using a precision laser alignment tool in order to allow the jig, the gantry and the robotic arm to form a precision machining apparatus. The method also comprises the reconditioning of the workpiece using the precision machining apparatus.

A guiding device includes a rail which extends in a direction, a plurality of runners distributed in the direction, and, for each runner, at least one runner/rail connection connecting each runner and the rail, configured to allow each runner to pivot independently from the other runners relative to the rail, around an axis of pivoting parallel to the direction.

A guiding device includes a rail which extends in a direction, a plurality of runners distributed in the direction, and, for each runner, at least one runner/rail connection connecting each runner and the rail, configured to allow each runner to pivot independently from the other runners relative to the rail, around an axis of pivoting parallel to the direction.

A machine for cutting or beveling a pipe. A cutter unit rotates around the pipe while cutting any surface of the pipe after gripping and fixing the pipe. The machine includes: a main body which a pipe passes through the center portion thereof to be fixed; and a cutter unit coupled to the main body unit rotates around the fixed pipe to cut or bevel the pipe. The cutter unit may have a rotating unit on one side to pull the cutter unit aside and a locking unit on the other side to restrain or release the cutter unit. An entry control unit operating the cutter unit includes: a lever gear-engaged with an outer side surface of an entry control plate; and a clutch formed on a rotation shaft of the lever such that the restraint is released when the lever is lifted or pressed in the axial direction.

Pipe machining apparatuses and bearing assemblies are provided. In one aspect, a pipe machining apparatus includes a frame, a tool carrier, a first roller bearing and a second roller bearing. The tool carrier is coupled to and movable relative to the frame and defines a race therein. The first roller bearing includes a first shaft and a first roller rotatably coupled to the first shaft. The first roller is at least partially positioned in the race and is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame. The second roller bearing includes a second shaft and a second roller rotatably coupled to the second shaft. The second roller is at least partially positioned in the race and is rotatable about a second roller bearing axis. The second roller bearing is adjustable to move the second roller bearing axis relative to the frame.

Pipe machining apparatuses and bearing assemblies are provided. In one aspect, a pipe machining apparatus includes a frame, a tool carrier, a first roller bearing and a second roller bearing. The tool carrier is coupled to and movable relative to the frame and defines a race therein. The first roller bearing includes a first shaft and a first roller rotatably coupled to the first shaft. The first roller is at least partially positioned in the race and is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame. The second roller bearing includes a second shaft and a second roller rotatably coupled to the second shaft. The second roller is at least partially positioned in the race and is rotatable about a second roller bearing axis. The second roller bearing is adjustable to move the second roller bearing axis relative to the frame.

Pipe machining apparatuses, coupling members, and methods of assembling pipe machining apparatuses are provided. In one aspect, a coupling member for coupling together a first section and a second section of a pipe machining apparatus includes a first housing member adapted to couple to the first section, a second housing member adapted to couple to the second section, an arm movably coupled to the first housing member, and an engagement member coupled to the arm. The arm is adapted to move between a coupled condition, in which the engagement member engages the second housing member, and an uncoupled condition, in which the engagement member does not engage the second housing member.