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US 9,316,472 B2Granted
Slide guide device
AssigneeMitutoyo Corporation
InventorHisayoshi Sakai
Life of this patent
Estimating the term…
Abstract
A slide guide device includes: a guide body having a reference guide surface and a sub guide surface that are parallel to each other; a slider having a reference slide pad adapted to slide on the reference guide surface and a sub slide pad adapted to slide on the sub guide surface, the slider being adapted to be driven by a drive unit to move along the guide body. The sub slide pad includes a slide surface (sub slide surface) slidable on the sub guide surface and an air pocket that receives a load in a manner non-contact with the sub guide surface.
Claims5
A slide guide device comprising:
- a guide body comprising a reference guide surface and a sub guide surface that are parallel to each other;
- a slider comprising a reference slide pad configured to slide on the reference guide surface and a sub slide pad configured to slide on the sub guide surface, the slider being configured to be driven by a drive unit to move along the guide body, wherein the sub slide pad comprises:
- a sub slide surface that is configured to slide on the sub guide surface;
- and an auxiliary pressure-receiving surface that is configured to receive a load from the sub guide surface in a non-contact manner with the sub guide surface;
- and
- a preload mechanism that is configured to apply a preload between the reference guide surface and the reference slide pad,
- wherein a formula of N′/N=a/b is satisfied, where:
- a denotes a distance between a drive axis of the drive unit and the reference guide surface;
- b denotes a distance between the drive axis and the sub guide surface;
- N denotes a contact force between the reference guide surface and the reference slide pad;
- and N′ denotes a contact force between the sub guide surface and the sub slide surface.
8 more elements
Dependencies are inferred from the claim text.