Rail grinding machine and method for grinding rails of a track

Abstract

A rail grinding machine for grinding rails of a track includes a machine frame, a plurality of guiding rollers rotatably mounted on the machine frame, a cross slide, and at least one grinding unit which is disposed at the cross slide. The cross slide is displaceably mounted on the machine frame in a transverse direction. The rail grinding machine includes a coarse positioning device for coarse positioning and a fine positioning device for fine positioning of the cross slide in the transverse direction. A method for grinding rails of a track is also provided.

1 . A rail grinding machine for grinding rails of a track, the rail grinding machine comprising:
 a machine frame;   a plurality of guiding rollers rotatably mounted on said machine frame for manually shifting the rail grinding machine on rails;   a cross slide displaceably mounted on said machine frame in a transverse direction;   at least one grinding unit disposed at said cross slide; and   a coarse positioning device for coarse positioning and a fine positioning device for fine positioning of said cross slide in the transverse direction.   
     
     
         2 . The rail grinding machine according to  claim 1 , wherein said coarse positioning device includes an actuating mechanism. 
     
     
         3 . The rail grinding machine according to  claim 1 , wherein said coarse positioning device includes an actuating mechanism connected with said fine positioning device. 
     
     
         4 . The rail grinding machine according to  claim 3 , wherein said actuating mechanism includes an actuating element being displaceable relative to said machine frame. 
     
     
         5 . The rail grinding machine according to  claim 1 , wherein:
 said fine positioning device includes a first component and a second component being displaceable relative to one another for fine positioning; and   said coarse positioning device includes an actuating element connected with said second component.   
     
     
         6 . The rail grinding machine according to  claim 1 , wherein said coarse positioning device includes a locking unit for locking and releasing a coarse position. 
     
     
         7 . The rail grinding machine according to  claim 1 , wherein said fine positioning device includes a spindle unit having a threaded spindle and a spindle nut. 
     
     
         8 . The rail grinding machine according to  claim 7 , wherein said coarse positioning device includes an actuating mechanism, and said spindle nut is connected with said actuating mechanism. 
     
     
         9 . The rail grinding machine according to  claim 7 , which further comprises bearings rotatably mounting said threaded spindle on said cross slide. 
     
     
         10 . The rail grinding machine according to  claim 8 , which further comprises bearings rotatably mounting said threaded spindle on said cross slide. 
     
     
         11 . The rail grinding machine according to  claim 1 , wherein said fine positioning device includes an actuating element. 
     
     
         12 . The rail grinding machine according to  claim 1 , wherein said cross slide includes a closed cross slide frame. 
     
     
         13 . The rail grinding machine according to  claim 1 , which further comprises a guide frame mounted on said cross slide so as to be swivelable about a swivel axis running parallel to a longitudinal direction. 
     
     
         14 . The rail grinding machine according to  claim 13 , which further comprises a grinding unit carrier for carrying said at least one grinding unit. 
     
     
         15 . The rail grinding machine according to  claim 13 , which further comprises a grinding unit carrier for carrying said at least one grinding unit, said grinding unit carrier being mounted on said guide frame so as to be displaceable in a vertical direction. 
     
     
         16 . The rail grinding machine according to  claim 13 , wherein said guide frame includes two guide elements, and two carrying elements are mounted on said two guide elements for carrying said at least one grinding unit. 
     
     
         17 . The rail grinding machine according to  claim 14 , wherein said guide frame includes two guide elements, and two carrying elements are mounted on said two guide elements for carrying said at least one grinding unit. 
     
     
         18 . The rail grinding machine according to  claim 1 , wherein said at least one grinding unit is fastened in an interchangeable manner. 
     
     
         19 . The rail grinding machine according to  claim 1 , wherein said at least one grinding unit includes a first grinding unit for profiling a rail and a second grinding unit for deburring a rail. 
     
     
         20 . A method for grinding rails of a track, the method comprising:
 providing a rail grinding machine having a machine frame;   at least one of coarse positioning or fine positioning of a cross slide relative to the machine frame; and   grinding a rail by using at least one grinding unit mounted on the cross slide.