Method of manufacturing a post ball bearing with helical arrangement of pocket holes
A post bearing and method of manufacture in which bearing balls are loaded into a series of pocket holes arranged along a helical pattern in a sleeve cage. A single groove is swaged into the outside diameter of the sleeve intermediate the ball turns to capture the balls in the pocket holes.
1. A method of manufacturing a post bearing comprising:
forming a series of pocket holes into a sleeve arranged in turns along a helical pattern on said sleeve, said pocket holes formed with a reduced size portion at the inside diameter of said sleeve;
dispensing a ball into each pocket hole which is prevented from passing through said reduced size portion but allowed to protrude into said inside diameter;
swaging a single continuous helical groove into an outside diameter of said sleeve intermediate said turns of said series of pocket holes to reduce the size of said pocket holes at the outside diameter of said sleeve to capture said balls in said pocket holes.
2. The method of claim 1 wherein in the step of dispensing a ball into each pocket hole, said sleeve is rotated and is moved axially to present each pocket hole successively beneath a ball dispenser/loader disposed above said sleeve.
3. The method of claim 2 wherein in said swaging step, a rotatable swaging tool is held in engagement with the outside diameter of said sleeve as said sleeve is rotated and moved axially past said swaging tool.
4. The method of claim 2 further including the step of winding tape around said sleeve so as to be in engagement with said balls after being loaded into said pocket holes to temporarily secure said balls therein.
5. The method of claim 2 further including the step of holding said sleeve on a magnetic arbor to hold the balls in said pocket holes until said swaging step is carried out.