| 摘要 |
There is disclosed a method for manufacturing a ball bearing in which the inner race members are made of sheet metal so as to provide a precision bearing of very low cost. The sheet metal ball bearing of this invention is contemplated to be made with three different styles of internal inner race members disposed to be attached to or used with office furniture, home appliances, conveyors, automotive devices and the like by three different means. Attachment of the bearings may be by spot welding, staking, spinning, bolting, riveting, in press fit seats and other conventional means. These ball bearings are commonly designated as unground cageless bearings wherein the balls are arranged in the raceway with the balls in substantially tangential circumferential engagement with each other so as to provide a bearing having a determined amount of play after the bearing is assembled. The manufacture of the ball bearings is with an "in line" assembly system or by a rotary table system. In either system the bearing components are carrier through several stations for assembly to a determined configuration. These bearings are contemplated as having an outer flange drawn to a determined diameter which is merely a matter of selection. Size change of this diameter is accomplished by changing of the dies for the production of an outer blank diameter and for drawing the flange to a determined outer diameter. These bearings have inner and outer members which are of sheet metal and after assembly the bearings may be case hardened. |
