A tool for shaping an abradable liner of a turbofan engine is disclosed. The turbofan engine includes a shaft to support a fan rotatable about a rotation axis. The abradable liner is configured to surround the fan and has an axial length in the direction of the rotation axis. The tool includes a support configured to be mounted to the shaft and rotatable about the rotation axis. The shaping head is mounted to the support for rotation about the rotation axis and configured to shape the abradable liner by removing material from the abradable liner. A radial position of the shaping head is adjustable relative to the rotation axis. The shaping head may sized to extend substantially across the axial length of the abradable liner.

A tool for shaping an abradable liner of a turbofan engine is disclosed. The turbofan engine includes a shaft to support a fan rotatable about a rotation axis. The abradable liner is configured to surround the fan and has an axial length in the direction of the rotation axis. The tool includes a support configured to be mounted to the shaft and rotatable about the rotation axis. The shaping head is mounted to the support for rotation about the rotation axis and configured to shape the abradable liner by removing material from the abradable liner. A radial position of the shaping head is adjustable relative to the rotation axis. The shaping head may sized to extend substantially across the axial length of the abradable liner.

A mobile machine tool for processing a surface of a workpiece or a room, wherein the machine tool includes a working device with a plate tool for processing the surface and a drive motor for driving the plate tool, which tool has a processing surface assigned to processing a workpiece and a machine side opposite to the processing surface, wherein intake air inflow openings are arranged on the surface to be processed for suctioning the processing surface onto the surface to be processed, which openings are flow-connected to at least one intake air outflow opening arranged on the plate tool away from the processing surface, wherein the plate tool includes at least one additional air inflow opening for the inflow of additional air, which is flow-connected to at least one additional air outflow opening arranged away from the processing surface, and wherein the machine tool includes an intake device for generating an intake air flow and/or a negative pressure at the at least one intake air outflow opening and the at least one additional air outflow opening.

A method of repairing a defect in a damaged rail of a railroad track comprises positioning a rail profiling device on the rails of the railroad track proximate a defect; securing the rail profiling device to the railroad; adjusting its grinder according to a selected value of wheel cone angle to create a profiled running surface over a portion of the damaged rail; creating a median zone using the grinder to remove material from the damaged rail adjacent the defect at a depth corresponding to at least a maximum depth of the defect; creating an incline from the top of the rail and leading to the median zone and one incline leaving the median zone to the top of the rail by using the grinder to grinding material off the damaged rail.

A method of repairing a defect in a damaged rail of a railroad track comprises positioning a rail profiling device on the rails of the railroad track proximate a defect; securing the rail profiling device to the railroad; adjusting its grinder according to a selected value of wheel cone angle to create a profiled running surface over a portion of the damaged rail; creating a median zone using the grinder to remove material from the damaged rail adjacent the defect at a depth corresponding to at least a maximum depth of the defect; creating an incline from the top of the rail and leading to the median zone and one incline leaving the median zone to the top of the rail by using the grinder to grinding material off the damaged rail.

Systems remotely polish and compress surfaces for working, including surfaces created through electrical discharge machining. A bridge may secure about the surface and carry a spindle that rotatably extends downward and carries a polishing assembly. The polishing assembly can push against the surface while polishing the same with larger amounts of force. The polisher can be moved about a perimeter of the surface and vertically. Systems may be remotely operated with a pneumatic slide, hydraulic motor, and/or stepper motor. Spotfaces formed from electrical discharge machining, including those in nuclear facilities and deep underwater, may have recast layers removed with such systems without manual or direct operator interface.

Abrading apparatus and methods for treating opposing web surfaces of an elongate part include engaging the surfaces with first and second abrasion devices coupled to a frame. A drive assembly advances the frame along the part while the abrasion devices are operated to treat the surfaces. A guard assembly is coupled to the frame and includes first and second guards positioned to block portions of the contact areas of the first and second abrasion devices.

Abrading apparatus and methods for treating opposing web surfaces of an elongate part include engaging the surfaces with first and second abrasion devices coupled to a frame. A drive assembly advances the frame along the part while the abrasion devices are operated to treat the surfaces. A guard assembly is coupled to the frame and includes first and second guards positioned to block portions of the contact areas of the first and second abrasion devices.

This invention relates to methods and materials for slip ring grinding of a generator rotor, without the need of dismounting the slip ring from the rotor of the generator, and allowing the grinding process to be performed whilst the generator is on full-load operation. As such the methods and materials of the present invention differs from current solution. Whilst allowing on-line grinding of the slip ring, the current solutions require low-speed rotations and accordingly operational shutdown of the generator. Allowing on-load grinding, the present invention greatly shortens the downtime of the generator and to perform maintenance on the slip ring beyond the provided standard maintenance schedule.

This invention relates to methods and materials for slip ring grinding of a generator rotor, without the need of dismounting the slip ring from the rotor of the generator, and allowing the grinding process to be performed whilst the generator is on full-load operation. As such the methods and materials of the present invention differs from current solution. Whilst allowing on-line grinding of the slip ring, the current solutions require low-speed rotations and accordingly operational shutdown of the generator. Allowing on-load grinding, the present invention greatly shortens the downtime of the generator and to perform maintenance on the slip ring beyond the provided standard maintenance schedule.