Manufacturing method for a rolling guide apparatus
AssigneeNsk Ltd.
InventorJun Matsumoto
Life of this patent
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Abstract
A rolling guide apparatus comprises a first slide member and second slide member. The first slide member includes a pair of wing portions and a connecting portion connecting the wing portions. First raceway grooves are formed on the wing portions, individually. Second raceway grooves are formed on the second slide member. Rolling elements are held under a pre-load between the raceway grooves. A residual compression stress region is created on the surface region of the first slide member. A worked portion is formed on the connecting portion. The worked portion serves to adjust the pre-load on the rolling elements by regulating the residual compression stress region by working to deform the connecting portion.
Claims3
A manufacturing method for a rolling guide apparatus, the rolling guide apparatus comprising a first slide member including a pair of wing portions and a connecting portion connecting the wing portions and formed having first raceway grooves on the wing portions, individually, a second slide member combined with the first slide member, movable relatively to the first slide member, and formed having second raceway grooves corresponding in position to the first raceway grooves, individually, and rolling elements held between the first and second raceway grooves,
- the manufacturing method comprising:
- a process for creating a residual compression stress region on the surface region of the first slide member;
- and
- a process for forming a worked portion on the residual compression stress region on an inner surface or an outer surface of the connecting portion by plastic working or machining, regulating the residual compression stress region by working to deform the connecting portion, and adjusting a pre-load on the rolling elements in accordance with the deformation.
Dependencies are inferred from the claim text.