BALL SCREW

• Main Author: YAMAMOTO SHINPEI
• Format: Patent
• Language: English; Japanese
• Published: 14.05.2024
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a ball screw with a simple structure that can be manufactured at low costs while securing lubricity.SOLUTION: A ball screw used under a condition that an axial line is inclined in a horizontal direction has: a screw shaft, on which an outer peripheral screw groove is formed; a nut, on which an inner peripheral screw groove is formed; plural balls housed in plural rolling paths formed by the outer peripheral screw groove and the inner peripheral screw groove opposed to each other; and a circulation member for returning the balls from one end of the rolling path to the other end. A compressed preload is applied to the ball screw, and the nut has a lubrication oil supply path with one end opened to outside and the other end opened to an inner periphery near an offset point.SELECTED DRAWING: Figure 3 【課題】潤滑性を確保しつつも、簡素な構成を持ち低コストで製造できるボールねじを提供する。【解決手段】ボールねじは、水平方向に対して軸線を傾けた状態で使用されるボールねじであって、外周ねじ溝が形成されたねじ軸と、内周ねじ溝が形成されたナットと、対向する前記外周ねじ溝と前記内周ねじ溝とにより形成される複数の転動路内に収容される複数のボールと、前記ボールを前記転動路の一端から他端に戻す循環部材と、を有し、前記ボールねじは、圧縮予圧が付与されており、前記ナットは、外部に向かって開口する一端と、オフセット点の近傍にて内周面に開口する他端とを備えた潤滑油供給路を有する。【選択図】図３