A system for polishing an outer surface of a specimen, the system including a motor and a rotatable shaft extending from a first end of the motor, wherein the specimen is removably attachable to the rotatable shaft, a safety cover configured to at least partially surround at least a portion of the rotatable shaft, wherein the safety cover includes a top panel, a first side panel and a second side panel spaced from each other across a width of the safety cover and extending downwardly from the top panel, and at least one aperture extending through at least one of the first and second side panels. The system further includes an abrasive material insertable through the at least one aperture so that the abrasive material is positionable to contact the outer surface of the specimen.

The disclosure discloses a double-station wheel deburring device consisting of two major systems. One is a wheel double-station exchange system responsible for feeding and discharging of two wheels, switching between a first working table and a second working table, switching between an upper station and a lower station, and rotation of the wheels. The other is a cutter feeding system responsible for feeding of a rim deburring blade, a riser deburring blade and brushes. The device can simultaneously remove burrs on outer rims, risers and valve holes of two wheels. Through the interactive double-station working tables, the feeding and discharging operation and the deburring operation are simultaneously carried out at separate stations. The device can be applied to deburring of wheels of different specifications. The disclosure also discloses a double-station wheel deburring method.

The disclosure discloses a double-station wheel deburring device consisting of two major systems. One is a wheel double-station exchange system responsible for feeding and discharging of two wheels, switching between a first working table and a second working table, switching between an upper station and a lower station, and rotation of the wheels. The other is a cutter feeding system responsible for feeding of a rim deburring blade, a riser deburring blade and brushes. The device can simultaneously remove burrs on outer rims, risers and valve holes of two wheels. Through the interactive double-station working tables, the feeding and discharging operation and the deburring operation are simultaneously carried out at separate stations. The device can be applied to deburring of wheels of different specifications. The disclosure also discloses a double-station wheel deburring method.

A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.

A grinding machine for external cylindrical grinding of hollow shafts may include at least one grinding disc, at least one support disc, and at least two centrings for a face-side fixing of a hollow shaft. At least one of the at least two centrings may be configured as a point. A ruler may be arranged to adjust and hold a position of the hollow shaft during a grinding operation. A rotation axis of the at least one grinding disc and of the at least one support disc may be arranged parallel to one another and define a plane. A rotation axis of the hollow shaft to be ground may extend outside of the plane by a distance of a>12 mm.

A grinding machine for external cylindrical grinding of hollow shafts may include at least one grinding disc, at least one support disc, and at least two centrings for a face-side fixing of a hollow shaft. At least one of the at least two centrings may be configured as a point. A ruler may be arranged to adjust and hold a position of the hollow shaft during a grinding operation. A rotation axis of the at least one grinding disc and of the at least one support disc may be arranged parallel to one another and define a plane. A rotation axis of the hollow shaft to be ground may extend outside of the plane by a distance of a>12 mm.

A workpiece spindle for a magnetic-shoe external cylindrical grinding machine a spindle for rotating a ring-shaped workpiece, a holding device for holding the ring-shaped workpiece and a hydraulic magnetic core lifting device coupled to the spindle and to the holding device to vary an axial spacing between the holding device and the spindle. The holding device has a magnetic shoe for clamping the ring-shaped workpiece in the holding device.