Machining tool for vehicle hub unit and vehicle hub unit
AssigneeJtekt Corporation
InventorsTakuya TODA, Takaaki ONIZUKA, Katsuyuki HARADA
Life of this patent
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Abstract
In a machining tool, multiple tooth forming portions for plastically forming spline teeth on an axial end face of a vehicle hub unit, the axial end face facing inward in the vehicle lateral direction, are formed in a circular pattern about the central axis of the machining tool. In the machining tool, a rounded-portion forming portion is formed to form a rounded portion between a tooth flank and a top land of each spline tooth, and the radius of the rounded-portion forming portion gradually changes in the radial direction about the central axis.
Claims6
A machining tool in which multiple tooth forming portions for plastically forming spline teeth on an axial end face of a vehicle hub unit, the axial end face facing inward in a vehicle lateral direction, are formed in a circular pattern about a central axis of the machining tool:
- wherein
- a rounded-portion forming portion that has an arc-shape is formed at a root portion of each of the tooth forming portions, and is used to form a rounded portion between a tooth flank and a top land of each spline tooth;
- and
- a radius of the rounded-portion forming portion gradually changes in a radial direction about the central axis.
A vehicle hub unit in which multiple spline teeth that are in mesh with teeth of a constant velocity joint are formed on an axial end face of a hub wheel to which a wheel is fitted, the axial end face facing inward in a vehicle lateral direction, in a circular pattern about an axis of the vehicle hub unit, wherein
- a radius of a rounded portion formed between a tooth flank and a top land of each spline tooth gradually changes in a radial direction about the axis.
Dependencies are inferred from the claim text.