Device for straightening a rectilinearly displaceable tool reciprocating member of machine tools

摘要

1,100,063. Bearings. SCHIESS A.G. 20 April, 1966 [28 May, 1965], No. 17195/66 Heading F2A. [Also in Division B3] A machine tool having a ram 6 guided and supported in a ram holder 5 by recirculatory rollers and bearings 7 arranged in pairs which face one another is characterized in that the recirculatory rollers and bearings are maintained in position by plane supporting surfaces 13 of supporting elements 9 cooperating with the recirculatory rollers and bearings 7, the supporting elements 9 being capable of turning about an axis transverse to the longitudinal direction of the ram 6 and being adjustable so as to cause individual displacement of all or all but one of the recirculatory rollers and bearings in a direction transverse to the ram. Each supporting element 9 comprises a cylindrical segment which is seated in and is capable of swivelling in a cylindrical recess 10 of the ram holder, the plane surface 13 of the segment forming the supporting surface for the recirculatory rollers and their bearings 7. The axis of the recess 10 is slightly inclined in relation to the guide surface of the ram 6, the cylindrical segments each being adjustable in the direction of its longitudinal axis in the manner of a wedge. A crosshead guide 15 is screwed to the bearing member of each recirculatory roller and is connected by spring-loaded bolts to a segment 9. The crosshead guide 15 lies in a groove 27 running in the direction of movement of the ram 6 in the ram holder 5. Abutment stops (16), Fig. 5 (not shown), are secured in the cylindrical recesses 10 by screws (22).