LINEAR MOTION GUIDE DEVICE AND END CAP FOR LINEAR MOTION GUIDE DEVICE

A linear motion guiding device that is unlikely to cause a damage to a tongue unit of an end cap even when the linear motion guiding device is used under high-speed conditions is provided. An end cap (22) includes, at an end of a side of a raceway of an arc groove (222) that forms an outer periphera...

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Bibliographic Details
Main Author KUDO, Tetsuya
Format Patent
LanguageEnglish
French
German
Published 25.07.2018
Subjects
BEARINGS
BLASTING
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A linear motion guiding device that is unlikely to cause a damage to a tongue unit of an end cap even when the linear motion guiding device is used under high-speed conditions is provided. An end cap (22) includes, at an end of a side of a raceway of an arc groove (222) that forms an outer peripheral surface of a direction changing passage (42), a tongue unit (25) that scoops up a ball (3) from a raceway (41) and guide the ball to a direction changing passage (42) . A distal end surface (251) of the tongue unit includes a plane (251a) perpendicular to a direction along the raceway (41) and a circular-arc surface (251b) that caves into an arc shape from the plane. A curvature radius of a circular-arc surface is smaller than a radius of the ball. A center of a circle indicating a curvature of a circular-arc surface is present on a line shifted from a groove bottom line of the arc groove by at least an offset amount between a raceway groove (12) of a side of the guide rail and the raceway groove (212) of a side of the slider.
Bibliography:Application Number: EP20160846618