Two nut regulation structures

The utility model discloses a two nut regulation structures, establish at main epaxial alloy bearing, wherein including main shaft, cover circulating oil path has been seted up at the holding in the part of alloy bearing to the main shaft to at the crossing face department formation oil film of main shaft with the alloy bearing, the side that the main shaft was being kept away from to the alloy bearing sets up to the inclined plane to be provided with an adjustment wheel seat on this alloy bearing, threaded face is seted up in the less one end of external diameter to the alloy bearing to threaded connection has a lock nut and the 2nd lock nut on this thread face, wherein the setting of laminating each other of a lock nut and the 2nd lock nut to an accessible lock nut and the 2nd lock nut's locking operation is spacing on the adjustment wheel seat with the alloy bearing. The utility model discloses guaranteed the stability after this alloy bearing is installed on the adjustment wheel seat, improved the rigidity, and then improved and used the machining precision of the grinding machine of this structure to the work piece.