Patent ID: 7870673
Filing Date: 2011-01-18
Classification: F16C,Y10T

Abstract:
1. A method of manufacturing a spherical bearing comprising an inside member having a metal ball portion, and an outside member having a ball support portion enclosing and supporting the ball portion of the inside member and connected swingably or rotatably relative to the inside member, the method comprising the steps of: performing injection molding, with the ball portion of the inside member being inserted into a mold as a core, to mold a resin liner covering the ball portion; casting the outside member covering the resin liner by inserting the ball portion and the resin liner into the mold as a core, such that the outside member is not in contact with the ball portion; and heating the resin liner covering the ball portion through only the ball portion of the inside member after the completion of the casting wherein said heating step comprises bringing a shank into press contact with the ball portion, and connecting an electrode to the ball portion at a location opposite that of the shank, and projection-welding the shank and the ball portion, wherein the resin liner is heated with the heat of the welding.