Patent ID: 8789450

Claim:
A rip fence module for a machine tool ( 1 ), in order to position workpieces with their edge facing away from a tool ( 2 ) on a machine table ( 3 ) at a certain distance to the tool ( 2 ), comprising: a superstructure ( 9 ) overlapping the machine table ( 3 ) at least in sections presenting a workpiece stop ( 9 d ) for the workpiece to be treated extending in a longitudinal direction (L); only one guided portion ( 24 , 16 g ) which is insertable and guidable in an allocated guide groove ( 14 a ) provided on a machine table side extending in an extension direction (A) transversely to the longitudinal direction (L), and by which the superstructure ( 9 ) is supported movably in the guide groove ( 14 a ) in the extension direction (A) in relation to the tool ( 2 ); and a locking device ( 16 ) shiftable between a locking position and a release position in order to lock the rip fence module in the locking position with the guided portion ( 24 , 16 g ) defined in relation to the guide groove ( 14 a ), and to permit in the release position a shifting of the guided portion ( 24 , 16 g ) in the guide groove ( 14 a ), wherein: the guided portion ( 24 , 16 g ) comprises a guided carriage ( 24 ) insertable in the guide groove ( 14 a ) at least in sections which guided carriage ( 24 ) in turn comprises a number of ball bearings or roller bearings ( 24 a , 24 b ) by means of which the guided carriage ( 24 ) inserted into the guide groove ( 14 a ) is movable on rollers in the release position on allocated roll-way surfaces of the guide groove ( 14 a ); with the guided carriage ( 24 ) comprising a carriage body ( 24 f ) fixed at the superstructure ( 9 ) on which carriage body ( 24 f ) each of the number of ball bearings or roller bearings ( 24 a , 24 b ) is received via a movable arm arrangement ( 24 c , 24 d , 24 e ) with a distance being alterable to the respectively allocated roll-way surface in a vertical direction between a roll-off position, in which each of the number of ball bearings or roller bearings ( 24 a , 24 b ) abuts said roll-way surface in the guide groove ( 14 a ), and a non-abutting withdrawal position for withdrawal of the guided carriage ( 24 ) inserted into the guide groove ( 14 a ) from the guide groove ( 14 a ); wherein the arm arrangement ( 24 c , 24 d , 24 e ) comprises a rocker ( 24 c ) attached pivotably on the carriage body ( 24 f ), with two bearing bolts ( 24 d , 24 e ) attached on two opposite sides of the rocker ( 24 c ), with at least one ball bearing or roller bearing ( 24 a , 24 b ) being received on each of the bearing bolts ( 24 d 24 e ).