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    • 73. 发明专利
    • Spindle unit having air bearing
    • 具有空气轴承的主轴单元
    • JP2005238410A
    • 2005-09-08
    • JP2004053737
    • 2004-02-27
    • Nakanishi:Kk株式会社ナカニシ
    • YAMAGUCHI MITSUAKIAYUTA MASANORI
    • B23Q11/00B23B19/02F16C32/06
    • PROBLEM TO BE SOLVED: To provide a spindle unit without generating noise even in rotational driving, while having the dustproof function for preventing cutting powder from being pulled in clearance between a housing and a main spindle.
      SOLUTION: The main spindle 12 is rotatably supported in a front housing 13 by an air bearing. The clearance between the main spindle and the housing is formed larger than the other part 18a in a tip part 18b. An air supply passage 21 and a nozzle 20 for supplying air are arranged in the clearance of the tip part so that the air is blown off outside from the tip part. A covering member 29 for covering a groove 12a arranged on the tip of the main spindle is arranged on the tip of the housing for detachably operating a collet chuck.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供主轴单元,即使在旋转驱动中也不产生噪音,同时具有防止切割粉末被拉动在壳体和主轴之间的间隙中的防尘功能。 解决方案:主轴12通过空气轴承可旋转地支撑在前壳体13中。 主轴和壳体之间的间隙形成为大于顶端部分18b中的另一部分18a。 空气供给通道21和用于供应空气的喷嘴20布置在顶端部分的间隙中,使得空气从顶端部分吹出外部。 用于覆盖布置在主轴顶端上的槽12a的覆盖部件29设置在壳体的顶端上,以可拆卸地操作夹头卡盘。 版权所有(C)2005,JPO&NCIPI
    • 77. 发明专利
    • Tool driving device
    • 工具驱动装置
    • JP2003334735A
    • 2003-11-25
    • JP2002136685
    • 2002-05-13
    • Nakanishi:Kk株式会社ナカニシ
    • YAMAGUCHI MITSUAKI
    • B23Q5/10B23B19/02F16C33/30F16C41/00
    • PROBLEM TO BE SOLVED: To provide a tool driving device rotatable at a high speed having relatively superior durability and stably supplying electricity.
      SOLUTION: In this tool driving device 1, a main spindle 4 having an installing part 43 of a tool on a shaft end is rotatably supported in a housing 2 via a bearing 5. A first driving part 6 for rotatably driving the main spindle is operatively connected to the main spindle. A second driving part 7 for applying vibration in the shaft direction to the main spindle is coaxially arranged with the main spindle. The bearing includes at least one rolling bearing 25. This rolling bearing has an outer race 25a, an inner race 25d and a rolling member 25c formed so as to be capable of carrying an electric current. The outer race is electrically connected to a power source, and the inner race is electrically connected to the second driving part. Electricity from the power source flows to the outer race, the rolling member and the inner race in this order, and is conducted to the second driving part.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种可以高速旋转的工具驱动装置,具有相对优良的耐久性和稳定的供电能力。 解决方案:在该工具驱动装置1中,具有轴端的工具的安装部43的主轴4通过轴承5可旋转地支撑在壳体2中。第一驱动部6,用于可旋转地驱动主体 主轴可操作地连接到主轴。 用于将轴向的振动施加到主轴的第二驱动部分7与主轴同轴布置。 该轴承包括至少一个滚动轴承25.该滚动轴承具有形成为能够承载电流的外圈25a,内圈25d和滚动构件25c。 外圈与电源电连接,内圈与第二驱动部电连接。 来自电源的电力依次流到外圈,滚动体和内圈,并被传导到第二驱动部。 版权所有(C)2004,JPO