Thin-wall bearing manufacturing method and method for machining thin-wall inner ring/outer ring of thin-wall bearing as well as precision flexible bearing

The invention provides a thin-wall bearing manufacturing method and a method for machining a thin-wall inner ring/outer ring of a thin-wall bearing as well as a precision flexible bearing. The method for machining the thin-wall inner ring/outer ring comprises the following steps of: step 0. providing a thin-wall ferrule with machining allowance left; step 1. reinforcing along the radial direction and/or axial direction of the thin-wall ferrule; step 2. carrying out quenching-tempering heat treatment on the reinforced ferrule obtained by reinforcement in the step 1; and step 3. carrying out corresponding grinding, hard cutting and super finishing on the reinforced ferrule receiving heat treatment, which includes removal of the machining allowance and a reinforced part obtained by reinforcement in the step 1, thereby obtaining the thin-wall ferrule finished product. The thin-wall ferrule reinforced machining method substantially reduces and even avoids deformation of the thin-wall ferrule in all manufacturing links, thereby obtaining the thin-wall ferrule with very high machining precision. The precision thin-wall bearing and the precision flexible bearing can be manufactured by fitting of the precision thin-wall ferrule and a precision rolling body.