METHOD AND APPARATUS FOR MANUFACTURING WHEEL SUPPORTING BEARING UNIT, AND METHOD OF MANUFACTURING VEHICLE
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United States of America Patent
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Issued Date -
Aug 30, 2018
app pub date -
Jul 10, 2017
filing date -
Jul 12, 2016
priority date (Note) -
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Abstract
Rotary forging for forming a hub-side face spline is started in a state in which a caulking section is made to come in contact with a flat surface section that is an inner end surface of an inner ring in an axial direction and a chamfer. In addition, a contact portion between an inner end surface of the caulking section in the axial direction and a processing surface of a roll at the beginning of the rotary forging overlaps a contact portion between the caulking section and the flat surface section and the chamfer of the inner ring in the axial direction.
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