Rotary caulking device, method of manufacturing hub unit bearing and method of manufacturing vehicle

A method of manufacturing a vehicle including a hub unit bearing, wherein the hub unit bearing is manufactured using a rotary caulking device,

• the hub unit bearing including:
• an outer ring which includes an outer ring raceway having double rows on an inner circumferential surface thereof and a stationary flange protruding radially outward;
• a hub which includes an inner ring raceway having double rows on an outer circumferential surface thereof;
• and
• a plurality of rolling elements which are rotatably disposed between the inner ring raceway and the outer ring raceway,
• wherein the stationary flange includes a plurality of protruding portions which protrude outward in a radial direction thereof, and
• the hub includes a hub main body and an inner ring, in which the inner ring is externally fitted into a portion near one axial end portion of the hub main body, and the one axial end portion of the inner ring is pressed and held by a caulking portion formed by plastically deforming a cylindrical portion provided at the one axial end portion of the hub main body radially outward,
• the rotary caulking device including:
• a support portion including a reference axis;
• an annular support plate which is supported to be able to move close to and away from the support portion and which can be driven to rotate about a central axis coaxial with the reference axis;
• a rotary drive unit including blocks which are supported at one or more places of a circumference of the support plate to be able to be displaced in an axial direction thereof;
• and
• a pressing die which is supported to be able to perform a rotating motion about a main axis coaxial with the reference axis, and is rotatably supported about a rotation axis inclined relative to the main axis,
• the method of manufacturing the hub unit bearing comprising the processes of:
• supporting the hub main body on the support portion such that a central axis of the hub main body is coaxial with the reference axis;
• engaging a tip portion of the blocks with the stationary flange such that power in a rotating direction thereof can be transmitted by displacing the rotary drive unit in the axial direction;
• driving the outer ring to rotate by driving the rotary drive unit to rotate;
• and
• forming the caulking portion by plastically deforming the cylindrical portion radially outward by pressing a tip portion of the pressing die on the cylindrical portion while rotating the pressing die around the main axis,
• wherein a rolling bearing or a slide bearing is provided at a tip portion of the blocks.