SPLINE FORMING METHOD FOR HUB UNIT, HUB UNIT, SPLINE FORMING METHOD FOR JOINT, AND JOINT

• US 20130230351A1
• Filed: 02/22/2013
• Published: 09/05/2013
• Est. Priority Date: 03/02/2012
• Status: Abandoned Application

• Current Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Original Assignee: Jtekt Corporation (Toyota Motor Corporation)
• Inventors: HARADA, Katsuyuki, ANNO, Hiroshi
• Application Number:
  US13/774,463
• Publication Number:
  US 20130230351A1
• Time in Patent Office: Days
• US Class Current: 403/359.1
• CPC Class Codes: B23P 13/02 in which only the machining operations are important
• CPC Class Codes: B60B 2310/226 by cutting
• CPC Class Codes: B60B 27/0031 of the axial type, e.g. front teeth
• CPC Class Codes: B60B 27/0036 comprising homokinetic joints
• CPC Class Codes: B60B 2900/112 Costs
• CPC Class Codes: B60Y 2200/10 Road Vehicles
• CPC Class Codes: F16C 19/186 with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
• CPC Class Codes: F16C 2326/02 Wheel hubs or castors in general B60B
• CPC Class Codes: F16C 35/063 Fixing them on the shaft with interposition of an element F16C35/07
• CPC Class Codes: F16D 1/02 for connecting two abutting shafts or the like
• CPC Class Codes: F16D 1/076 by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
• CPC Class Codes: F16D 2003/22326 Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
• CPC Class Codes: F16D 3/223 the rolling members being guided in grooves in both coupling parts
• CPC Class Codes: Y10T 403/7026 Longitudinally splined or fluted rod
• CPC Class Codes: Y10T 409/400175 Process

Abstract

Splines, which are to be meshed with a joint that transmits torque to a rotary ring of a hub unit, are formed in a side face of the rotary ring, the side face being on one side of the rotary ring in the axial direction. Spline grooves are formed in the side face by subjecting the side face to broaching.

Claims

1. A spline forming method for a hub unit that includes:

a fixed ring that is fixed to a vehicle body-side member;

a rotary ring to which a wheel is fitted; and

rolling elements that are arranged between the fixed ring and the rotary ring, the spline forming method for forming splines, which are to be meshed with a joint that transmits torque to the rotary ring, in a side face of the rotary ring of the hub unit, the side face being on one side of the rotary ring in an axial direction, comprising;

forming spline grooves in the side face by subjecting the side face to broaching.

2. The spline forming method according to claim 1, wherein a plurality of the spline grooves that are parallel to each other is formed in the side face by subjecting the side face to broaching.

3. A hub unit, comprising:

a fixed ring that is fixed to a vehicle body-side member;

a rotary ring to which a wheel is fitted; and

rolling elements that are arranged between the fixed ring and the rotary ring, wherein

splines, which are to be meshed with a joint that transmits torque to the rotary ring, are formed in a side face of the rotary ring, the side face being on one side of the rotary ring in an axial direction, and

the splines have a plurality of spline grooves that are parallel to each other.

4. The hub unit according to claim 3, wherein spline groove groups each of which is formed of the spline grooves that are parallel to each other are formed in the side face so as to be point-symmetric at intervals of 180 degrees about an intersection of a center line of the rotary ring with the side face.

5. A spline forming method for a joint that includes:

a torque transmission ring that transmits torque to a hub unit that supports a wheel such that the wheel is rotatable with respect to a suspension provided on a vehicle body side of an automobile, the spline forming method for forming splines, which are to be meshed with the hub unit, in an axial side face of the torque transmission ring, comprising;

forming spline grooves in the side face by subjecting the side face to broaching.

6. A joint, comprising:

a torque transmission ring that transmits torque to a hub unit that supports a wheel such that the wheel is rotatable with respect to a suspension provided on a vehicle body side of an automobile, wherein

splines, which are to be meshed with the hub unit, are formed in an axial side face of the torque transmission ring, and the splines have a plurality of spline grooves that are parallel to each other.