Patent ID: 6393887
Filing Date: 2002-05-28
Classification: B24B,Y10T

Abstract:
A fixed roll apparatus of a fixed roll machine for crankshafts which is of scissors construction and wherein two pivotable scissors arms disposed opposite one another bear a fixed roll head and a support roll head respectively, the support roll head having two axis-parallel support rolls whose axes of rotation lie in a common plane with a driving device generating the closure and opening movement of the fixed roll apparatus and also generating the fixed roll force, characterised in that the support roll head (14) has at least one axial guide roll (27) whichis disposed in front of the support rolls (21 and 22) in the pivoting direction (35) for the closure of the scissors arm (10) bearing the support rolls (21 and 22), whose axis of rotation (41) is perpendicular to the axis of rotation (4) of the crankshaft (3) and lies in a plane (38) which encloses an acute angle (37) with the plane (34) of the axes of rotation (22 and 33) of the support rolls (21 and 22), and whose diameter (28) is larger than the width (29) of the support roll head (14) and slightly smaller than the spacing (29a) of the oil collars (25, 26) of a main bearing pin (5) or a connecting rod bearing pin (6).