| 摘要 |
A rolling machine element capable of remarkably increasing a loading capacity, rigidity, and accuracy by forming a crowning based on an oval shape at the raceway surface end part of a guide block (ball guide, roller guide, etc.) or an outer tube (ball spline, ball bush, etc.) to act large load on rolling elements even near the end of the crowning. The rolling machine element comprises a first member (11) in which a raceway surface (14) is formed and a second member (12) on which the first member is mounted through the rolling elements (13) and which is formed to be able to guide the first member (11) in a specified direction. The rolling machine element is characterized in that the first member (11) can be moved in the guiding direction of the second member (12) by allowing the rolling elements (13) to move in and out of the raceway surface (14) in an orderly arranged state, and the crowning (14a) based on the oval shape (15) is formed at the end part of the raceway surface (14) of the first member (11) where an access point for the rolling elements (13) is formed. |
