Method for manufacturing hub unit bearing, swaging device, and method for manufacturing vehicle
AssigneeNsk Ltd.
InventorsNobuyuki HAGIWARA, Reiji HIRASAKI
Life of this patent
Estimating the term…
Abstract
To realize a method for manufacturing a hub unit bearing capable of increasing the processing efficiency of a staking portion. An axial inner end portion of a hub ring 22 is processed into a staking portion 26 by rotating a die 31 around a reference axis C in a state in which the die 31 having a rotation axis α inclined with respect to the reference axis C is pressed against the axial inner end portion of the hub ring 22 under a condition that the hub ring 22 is disposed so that a center axis of the hub ring 22 is coaxial or parallel to the reference axis C and the hub ring 22 is supported to be radially movable.
Claims15
1-17. (canceled)
A method for manufacturing a hub unit bearing, the hub unit bearing including an outer ring, a hub, and a rolling element disposed between the outer ring and the hub, the hub including a first hub element, a second hub element, and a staking portion connecting the first hub element and the second hub element to each other, the manufacturing method comprising the steps of:
- preparing a holder;
- holding the second hub element, which is combined with the first hub element along a reference axis, on the holder;
- and
- forming the staking portion by using a die in a state in which (i) the second hub element is movable with respect to the holder in a direction orthogonal to the reference axis, or in a state in which (ii) the holder holding the second hub element is movable in the direction orthogonal to the reference axis.
A swaging device for manufacturing a hub unit bearing, the hub unit bearing including an outer ring, a hub, and a rolling element disposed between the outer ring and the hub, the hub including a first hub element, a second hub element, and a staking portion connecting the first hub element and the second hub element to each other, the second hub element including a shaft portion provided with a track for the rolling element and a pilot portion provided at a shaft end portion of the shaft portion, the swaging device comprising:
- a reference axis;
- a die;
- an alignment jig;
- and
- a holder which holds the second hub element combined with the first hub element during a staking process for forming the staking portion using the die,
- wherein the holder includes an insertion hole having an inner diameter larger than an outer diameter of the pilot portion of the second hub element, and
- wherein a first state in which the alignment jig is fitted into the pilot portion of the second hub element inserted into the insertion hole of the holder so that a center axis of the second hub element is aligned to the reference axis and a second state in which the alignment jig is removed from the second hub element so that the second hub element is movable with respect to the holder in a direction orthogonal to the reference axis are switchable.
A swaging device for manufacturing a hub unit bearing, the hub unit bearing including an outer ring, a hub, and a rolling element disposed between the outer ring and the hub, the hub including a first hub element, a second hub element, and a staking portion connecting the first hub element and the second hub element to each other, the swaging device comprising:
- a reference axis;
- a die;
- and
- a holder which holds the second hub element combined with the first hub element, the holder being movable in a direction orthogonal to the reference axis in a state in which the second hub element is held during a staking process for forming the staking portion using the die.
Dependencies are inferred from the claim text.