METHOD OF MANUFACTURE OF HYDROSTATIC NUT (VERSIONS), HYDROSTATIC NUT AND HYDROSTATIC UNIT Russian patent published in 1999 - IPC

FIELD: grinding machines. SUBSTANCE: hydrostatic nut works together with motion screw setting in motion movable table of grinding machine. Standard motion screw is placed in cylindrical bush provided with internal thread. Wax or tape cover plates are secured on outer surface of thread of standard screw and remaining part of it is protected with special coat excluding adhesion of polymer material. Then solution of polymer is fed into gap between surface of screw and bush; this polymer is hardened at room temperature and atmospheric pressure, after which standard screw is removed and is freed of wax and tape. Nut thus obtained is hydrostatic nut. In driving working motion screw in this nut and in pumping fluid, friction is practically absent. EFFECT: avoidance of local wear; reduction of friction and end play. 18 cl, 4 dwg