The utility model provides a centering shaft for fine
grinding of an inner groove of a deep groove
ball bearing, and relates to the technical field of deep groove
ball bearing equipment. Comprising a sleeve, a pressing plate is mounted on one side of the sleeve, the sleeve and the reinforcing sleeve are connected by arranging the sleeve, the reinforcing sleeve, an external connecting rod and a reinforcing mounting rod, operation continues, the problem that the inner
diameter of a workpiece is scratched is fundamentally solved in a combined rotating mode, the sleeve can enter the workpiece more easily, and therefore the chamfer and the end face of the workpiece are protected; the sleeve and the reinforcing sleeve are matched and connected for use, so that the overall use range is wide, the improved combined centering shaft can properly select parts according to the
machining size of a workpiece, only part of the parts in the inner
diameter sleeving
assembly are replaced within the proper workpiece size range, the adjusting time is shortened, the
machining efficiency is improved, and the
machining cost is reduced. The whole device is simple and easy to operate, no
power equipment is used for auxiliary operation, and the whole installation and use cost is saved.