A system for reprofiling a wheel set of a railway vehicle allows the center of rotation of the wheel set to move relative to supporting rollers. A cutting tool used to reprofile the wheel profile on a wheel set is moved relative to the center of rotation of the wheel set to maintain a constant distance between the center of rotation and the cutter. The rollers are maintained in a fixed position during the cutting process. The system avoids mechanically forcing a constant location of the wheel set relative to the center of rotation.

A system for reprofiling a wheel set of a railway vehicle allows the center of rotation of the wheel set to move relative to supporting rollers. A cutting tool used to reprofile the wheel profile on a wheel set is moved relative to the center of rotation of the wheel set to maintain a constant distance between the center of rotation and the cutter. The rollers are maintained in a fixed position during the cutting process. The system avoids mechanically forcing a constant location of the wheel set relative to the center of rotation.

The invention relates to a method, a tool receptacle (13), and an apparatus for turning a face of a workpiece (2, 102) with a tool (3), wherein the workpiece (2, 102) is held in a workpiece receptacle (12) rotating about an axis of rotation (100) of a workpiece spindle, wherein, for producing and/or machining a workpiece contour having convex and/or concave portions on the face (20) that extend over defined angles of rotation, the tool (3) and the workpiece (2, 102) are moved back and forth relative to one another in an axial movement along the axis of rotation (100) of the workpiece spindle, said axis being synchronized with the rotational movement of the workpiece (2, 102), and wherein a blade (30) of the tool (3) is aligned at least in the cutting direction and/or transverse to the cutting direction opposite to the surface normals (N) of the workpiece contour to be produced and/or machined, in such a way that an effective clearance angle (α) and an effective cutting angle (γ) remain at least virtually constant opposite to the surface normals (N). The invention relates to a workpiece (2, 102) having a turned face.

The invention relates to a method, a tool receptacle (13), and an apparatus for turning a face of a workpiece (2, 102) with a tool (3), wherein the workpiece (2, 102) is held in a workpiece receptacle (12) rotating about an axis of rotation (100) of a workpiece spindle, wherein, for producing and/or machining a workpiece contour having convex and/or concave portions on the face (20) that extend over defined angles of rotation, the tool (3) and the workpiece (2, 102) are moved back and forth relative to one another in an axial movement along the axis of rotation (100) of the workpiece spindle, said axis being synchronized with the rotational movement of the workpiece (2, 102), and wherein a blade (30) of the tool (3) is aligned at least in the cutting direction and/or transverse to the cutting direction opposite to the surface normals (N) of the workpiece contour to be produced and/or machined, in such a way that an effective clearance angle (α) and an effective cutting angle (γ) remain at least virtually constant opposite to the surface normals (N). The invention relates to a workpiece (2, 102) having a turned face.

The invention discloses an improved wheel alignment device which comprises a rack, a cylinder, a servo motor, a hollow shaft and the like. When the improved wheel alignment device is used, a stopper on a roller table centers a wheel, air enters at the lower end of a large piston and causes a long cylinder rod, a flange end cover, an expanding sleeve and the like to rise; the flange end cover is in contact with a wheel flange plate, and after the expanding sleeve is in contact with a central hole, air enters at the upper end of a small piston of a small cylinder, a short cylinder rod pulls an expanding core downwards, and the expanding sleeve clamps the central hole of the wheel; the servo motor causes the hollow shaft and the wheel to rotate by a belt pulley I and a belt pulley II, and the hollow shaft and the wheel stop rotating after a sensor finds the position of a valve hole of the wheel; at the moment, lifting cylinders cause a supporting plate to rise to a certain height through guide pillars, and a large cylinder causes the wheel to descend and the lower end surface of the wheel to fall above the supporting plate. The improved wheel alignment device can realize the alignment function before the automatic machining of wheel finish turning in use, and when the wheels with different wheel widths and different offset distances are automatically produced, programs do not need to be switched.

The invention discloses an improved wheel alignment device which comprises a rack, a cylinder, a servo motor, a hollow shaft and the like. When the improved wheel alignment device is used, a stopper on a roller table centers a wheel, air enters at the lower end of a large piston and causes a long cylinder rod, a flange end cover, an expanding sleeve and the like to rise; the flange end cover is in contact with a wheel flange plate, and after the expanding sleeve is in contact with a central hole, air enters at the upper end of a small piston of a small cylinder, a short cylinder rod pulls an expanding core downwards, and the expanding sleeve clamps the central hole of the wheel; the servo motor causes the hollow shaft and the wheel to rotate by a belt pulley I and a belt pulley II, and the hollow shaft and the wheel stop rotating after a sensor finds the position of a valve hole of the wheel; at the moment, lifting cylinders cause a supporting plate to rise to a certain height through guide pillars, and a large cylinder causes the wheel to descend and the lower end surface of the wheel to fall above the supporting plate. The improved wheel alignment device can realize the alignment function before the automatic machining of wheel finish turning in use, and when the wheels with different wheel widths and different offset distances are automatically produced, programs do not need to be switched.

A portable apparatus for configuring a wheel associated with a track is provided. The apparatus is in a fixed position with respect to a rail associated with the track when in operation. The apparatus includes a tool configured to engage the wheel, a position system for positioning the cutting tool in at least two axis, and a computer control. The computer control is coupled to control the positioning system. The positioning system is controlled so that the wheel is configured in accordance with a profile.

A portable apparatus for configuring a wheel associated with a track is provided. The apparatus is in a fixed position with respect to a rail associated with the track when in operation. The apparatus includes a tool configured to engage the wheel, a position system for positioning the cutting tool in at least two axis, and a computer control. The computer control is coupled to control the positioning system. The positioning system is controlled so that the wheel is configured in accordance with a profile.

Represented and described is an underfloor wheel set processing machine, in particular an underfloor wheel lathe (1′) for reprofiling wheels and brake discs of wheel sets (20) of rail vehicles, comprising: a machine stand (3), a crossbeam (2) for bridging a workshop track (4) with at least two rails (4A, 4B, 4C) in the transverse direction, two roller carriers (7A, 7B), at least four friction rollers (8), at least one friction roller drive (9) to drive the friction rollers (8) and at least one axial guide roller (19) to axially guide the wheel set (20), wherein the machine stand (3) has a first part (3A) and a second part (3B), wherein the crossbeam (2) is supported on both parts (3A, 3B) of the machine stand (3), wherein the roller carriers (7A, 7B) are movably connected to the machine stand (3), and wherein the friction rollers (8) are rotatably supported on the roller carrier (7A, 7B). In order to adjust to wheel sets (20) with different track widths, it is proposed for the first part (3A) of the machine stand (3) and the second part (3B) of the machine stand (3) to be displaceable relative to one another in the transverse direction.

Represented and described is an underfloor wheel set processing machine, in particular an underfloor wheel lathe (1′) for reprofiling wheels and brake discs of wheel sets (20) of rail vehicles, comprising: a machine stand (3), a crossbeam (2) for bridging a workshop track (4) with at least two rails (4A, 4B, 4C) in the transverse direction, two roller carriers (7A, 7B), at least four friction rollers (8), at least one friction roller drive (9) to drive the friction rollers (8) and at least one axial guide roller (19) to axially guide the wheel set (20), wherein the machine stand (3) has a first part (3A) and a second part (3B), wherein the crossbeam (2) is supported on both parts (3A, 3B) of the machine stand (3), wherein the roller carriers (7A, 7B) are movably connected to the machine stand (3), and wherein the friction rollers (8) are rotatably supported on the roller carrier (7A, 7B). In order to adjust to wheel sets (20) with different track widths, it is proposed for the first part (3A) of the machine stand (3) and the second part (3B) of the machine stand (3) to be displaceable relative to one another in the transverse direction.