Optimized Staking Process for Hub Unit Bearings
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Summary
Problems
Conventional methods for forming the staking portion in hub unit bearings result in energy loss due to vibration and deformation of the swaging device and hub unit bearing components, leading to reduced processing efficiency.
Innovation solutions
The method involves a swaging device with a holder and die configuration that allows the hub ring to be radially movable during the staking process, optimizing the diameter difference between the insertion hole and pilot portion to minimize energy loss, ensuring the hub ring is coaxial or parallel to the reference axis, and using an alignment jig to maintain coaxial alignment, thereby reducing unnecessary energy consumption and deformation.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the die is pressed against the axial inner end portion of the hub ring to form the staking portion, then the staking portion is formed to suppress the inner ring, but energy is lost due to vibration and deformation of the swaging device and hub unit bearing components
Why choose this principle:
The holder is designed to be movable in the radial direction, allowing dynamic adjustment during the staking process. This enables the hub ring to move radially outward as the die presses against it, converting some of the pressing force into useful work rather than allowing it to cause harmful vibrations and deformations in fixed components. The dynamic movement resolves the contradiction by making the system adaptable to the forces applied during staking portion formation.
Principle concept:
If the hub ring is fixed during the staking process, then alignment is maintained, but energy loss increases due to vibration and deformation
Why choose this principle:
The holder transitions from a fixed to a movable state during the staking process. Initially, the holder maintains the hub ring in a stable, aligned position. When the die applies pressing force, the holder moves radially outward, allowing the hub ring to expand slightly and absorb the deformation energy. This dynamic behavior maintains alignment stability while reducing energy loss by preventing harmful vibrations.
Application Domain
Data Source
AI summary:
The method involves a swaging device with a holder and die configuration that allows the hub ring to be radially movable during the staking process, optimizing the diameter difference between the insertion hole and pilot portion to minimize energy loss, ensuring the hub ring is coaxial or parallel to the reference axis, and using an alignment jig to maintain coaxial alignment, thereby reducing unnecessary energy consumption and deformation.
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.