Method of manufacturing bearing unit, and rotary press device

Abstract

A rotary press device ( 33 ) includes a restriction section ( 36 ) configured to restrict a motion of a roll ( 30 ) around a central axis of a roll ( 30 ) against movement of the roll ( 30 ) around a central axis of a hub main body ( 8 ) during rotary forging. In an example, the restriction section ( 36 ) has guide teeth ( 44 ) meshed with teeth formed on a processing surface of the roll ( 30 ).

1 . A rotary press device comprising:
 a holder that holds a bearing unit such that a central axis of an inner wheel coincides with a first axis;   a roll having teeth for processing a face spline;   a first driving apparatus that performs relatively pressing the roll with respect to the inner wheel in a state in which a central axis of the roll is inclined with respect to the first axis;   a second driving apparatus that performs relative movement between the bearing unit and the roll in parallel with the relative pressing; and   a restriction section that restricts movement of the teeth around the first axis.   
     
     
         2 . The rotary press device according to  claim 1 ,
 wherein the restriction section has a mechanical restriction section with respect to the roll.   
     
     
         3 . The rotary press device according to  claim 1 ,
 wherein the restriction section has a restriction member that is disposed on the holder so as to face the teeth of the roll and that has grooves corresponding to the teeth.   
     
     
         4 . The rotary press device according to  claim 1 ,
 wherein the restriction section has a restriction member having a first end continuous with a portion of an outer circumferential surface of the roll and a second end continuous with a fixing section.   
     
     
         5 . A method of manufacturing a bearing unit using the rotary press device according to  claim 1 . 
     
     
         6 . A method of manufacturing a bearing unit using the rotary press device according to  claim 2 . 
     
     
         7 . A method of manufacturing a vehicle using the method of manufacturing a bearing unit according to  5 . 
     
     
         8 . A method of manufacturing a vehicle using the method of manufacturing a bearing unit according to  6 .