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    • 8. 发明申请
    • HIGH-SPEED ROTARY BODY
    • 高速旋转体
    • WO1996038679A1
    • 1996-12-05
    • PCT/JP1995001078
    • 1995-06-02
    • IBIDEN CO., LTD.KUWAYAMA, YoichiIZUME, HiroyukiJINBO, NaoyukiOHNO, Kazushige
    • IBIDEN CO., LTD.
    • F16C32/00
    • F16C32/0417F16C17/02F16C17/026F16C25/045F16C33/1015G02B26/121H02K5/1677H02K7/09
    • A ring-shaped magnet (19) is bonded to an outer circumferential portion of a rotary body (21) supported on a rotary shaft (13) which forms a radial dynamic gas pressure bearing. A ring-shaped magnet (23) is provided with a predetermined distance maintained between itself and the ring-shaped magnet (19). Owing to the magnetic attractive force of these two ring-shaped magnets (19, 23), the rotary body (21) is restricted in its axial movement and held radially rotatable. Since the rotary body (21) is held in a 0.5 decentered state due to the difference in the magnetic balance between the ring-shaped magnets (19, 23), the radial dynamic gas pressure bearing generates a high dynamic pressure. A high dynamic pressure occurs due to herringbone dynamic gas generating grooves (15a, 15b) as well. Owing to the synergetic effect of these parts, a very high radial load capacity occurs, and the rotational accuracy is improved.
    • 环形磁体(19)被结合到支撑在形成径向动态气体压力轴承的旋转轴(13)上的旋转体(21)的外周部分上。 环状磁体(23)在其与环状磁体(19)之间保持预定距离。 由于这两个环形磁体(19,23)的磁性吸引力,旋转体(21)的轴向运动被限制并保持径向可旋转。 由于旋转体(21)由于环形磁体(19,23)之间的磁平衡的差异而保持在0.5偏心状态,所以径向动态气体压力轴承产生高动态压力。 由于人字动态气体发生槽(15a,15b)也产生高动态压力。 由于这些部件的协同效应,发生非常高的径向载荷能力,并提高了旋转精度。