ROLLING UNIT FOR DEEP-ROLLING THE RUNNING SURFACES OF RAIL VEHICLES

• US 20170282327A1
• Filed: 09/15/2015
• Published: 10/05/2017
• Est. Priority Date: 09/18/2014
• Status: Active Grant

• Current Assignee: Hegenscheidt-MFD GmbH
• Original Assignee: Hegenscheidt-MFD GmbH
• Inventors: MALDANER, Jandrey, RUDI, Alexander
• Granted Patent: US 10,639,767 B2
• Time in Patent Office: Days
• CPC Class Codes: B24B 39/003 the working tool being composed of a plurality of working rolls or balls
• CPC Class Codes: B24B 39/04 designed for working external surfaces of revolution
• CPC Class Codes: B24B 39/045 the working tool being composed of a plurality of working rolls or balls
• CPC Class Codes: B24B 39/06 designed for working plane surfaces
• CPC Class Codes: B24B 5/46 for grinding railway car wheels

Abstract

The invention concerns a rolling unit for machining the wheel running surfaces of wheelsets for rail vehicles, with the rolling unit featuring at least one work roller by means of which the wheel running surface to be machined is subjected to a deep rolling process following manufacture of the wheelset in new condition or, at a later date, after reprofiling to increase the service life of the wheel running surfaces. The task is solved to create a relevant rolling unit by means of which the wheel running surfaces can be deep-rolled in the forward feed process using work rollers. This task is solved by the rolling unit featuring a base body on which a support arm is located in a vertical position to the base area, on which a receptacle is supported that is unilaterally fixed in position via a thread in the support arm and on which an angular contact ball bearing is located; this supports at least one work roller featuring at least two different rolling radii.

Claims

1. A rolling unit for machining the wheel running surfaces of wheelsets for rail vehicles, with the rolling unit featuring at least one work roller by means of which the wheel running surface to be machined after manufacture of the wheelset in its new state or at a later time following reprofiling to increase the service life of the wheel running surfaces is subjected to machining by a deep rolling process,

wherein the rolling unit features a base body on which a support arm is located in a vertical position to the base area, on which a receptacle is supported that is unilaterally fixed in position via a thread in the support arm and on which an angular contact ball bearing is located;

this supports a work roller featuring at least two different rolling radii.

2. The rolling unit in accordance with claim 1, wherein the rolling radius in the front area of the work roller is between 1 and 12 mm and the rolling radius in the rear area of the work roller is between 1 and 500 mm.

3. The rolling unit in accordance with claim 1, wherein the angular contact ball bearing is designed with two rows and features lubrication for life as well as sealing lips fitted on both sides.

4. The rolling unit in accordance with claim 1, wherein the receptacle features a ring-shaped flange designed as a thread stop and in an operative connection with a straight pin as an anti-rotation device.

8. The rolling unit in accordance with claim 1, wherein the work roller consists of hardened steel or carbide.

9. The rolling unit in accordance with claim 1, wherein the work roller features a roller diameter between 20 mm and 200 mm.

10. The rolling unit in accordance with claim 1, wherein the bearings are designed alternatively as grooved ball bearings, cylindrical roller bearings or slide bearings.

5. A rolling unit for machining the wheel running surfaces of wheelsets for rail vehicles, with the rolling unit featuring at least one work roller by means of which the wheel running surface to be machined after manufacture of the wheelset in its new state or at a later time following reprofiling to increase the service life of the wheel running surfaces is subjected to machining by a deep rolling process, wherein

the rolling unit has a base body on which a first support arm and a second support arm are supported, that respectively run vertically to the base area of the base body as well as in parallel to one another, with a locating bolt being supported on the support arms, which is two-sided and fixed in position in the support arms by at least one thread, and on which an axial/radial bearing is located which supports a work roller featuring two equal or different rolling radii,

6. The rolling unit in accordance with claim 5, wherein the rolling radii are between 3 mm and 30 mm.

7. The rolling unit in accordance with claim 5, wherein the locating bolt features two ring-shaped flanges designed to receive the axial components of the axial/radial bearing.