Double moving column grinder with simultaneous two wheel grinding

Abstract

A grinding machine ( 1 ) that comprises two aligned columns ( 2,3 ), each of said columns ( 2,3 ) being provided with one wheelhead ( 4,5 ) with its respective grinding wheels ( 6,7 ). The columns ( 2,3 ) slide over a base ( 9 ) common to both and parallel to at least one machining table ( 11 ), each of the wheelheads ( 4,5 ) has its own vertical drive system and its own transverse drive system and both grinding wheels ( 6,7 ) may work simultaneously.

1 . A grinding machine for grinding bulky workpieces of considerable length, such as frames, columns, tables, etc., which comprises: 
 at least one machining table on which the workpiece to be ground is placed,    at least two columns linked at the bottom to a carriage, which slides longitudinally over a base parallel to said machining table;    at least one wheelhead with its respective grinding wheel on each one of said columns, at least one of said wheelheads being capable of angle movement;    in such a way that the vertical and transverse drives of the wheelheads of each column are independent of each other and said wheelheads, therefore, are able to work simultaneously.    
     
     
         2 . A grinding machine according to    claim 1   , wherein said columns are facing each other.  
     
     
         3 . A grinding machine according to    claim 1   , wherein the movement of said carriage over the base is effected by means of a hydrostatic slideway.  
     
     
         4 . A grinding machine according to    claim 1   , wherein the longitudinal movement of the carriage is governed by means of a rack and pinion and encoder system.