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    Spindle clamping device for machine tool
    1.
    发明授权
    Spindle clamping device for machine tool 失效
    机床主轴夹紧装置

    公开(公告)号：US5302062A

    公开(公告)日：1994-04-12

    申请号：US924960

    申请日：1992-08-05

    申请人： Sadamu Baba ,  Toshio Kawakami

    发明人： Sadamu Baba ,  Toshio Kawakami

    IPC分类号： B23B31/173 ,  B23Q1/28 ,  F15B15/26 ,  F16D1/09 ,  F16D1/091 ,  F16D1/094 ,  B23C1/02

    CPC分类号： F16D1/094 ,  B23B31/16179 ,  B23Q1/28 ,  F15B15/262 ,  F16D1/091 ,  Y10T279/1266 ,  Y10T408/94 ,  Y10T409/309352 ,  Y10T409/309912

    摘要： A machine tool is provided with a spindle clamping device for clamping a spindle assembly supported by a spindle head and composed of an outer spindle rotatably supported by the spindle head and an inner spindle disposed inside the outer spindle to be reciprocal along an axial direction thereof. The inner spindle is inserted into an inner hollow portion of the outer spindle so that a space is formed between an inner peripheral surface of the outer spindle and an outer peripheral surface of the inner spindle. The spindle clamping device comprises a pressure applying member such as a pair of pistons or oil ring disposed in the space between the outer and inner spindles for applying a pressure in an axial direction of the outer and inner spindles. The pressure applying member is provided with an oil chamber, and a pair of clamp rings are disposed in the space axially outside the pressure applying member. Each of the paired clamp rings comprises inner and outer ring elements having tapered surfaces slidably contacting each other. Spring members are disposed in the space axially outside the clamp rings, respectively, for urging the outer ring elements inwardly, and a static pressure pocket is formed in a contacting portion of the spindle head supporting the inner spindle wherein pressurized oil and air is supplied into the oil chamber through the static pressure pocket.

    摘要翻译： 一种机床具有主轴夹持装置，用于夹紧由主轴头支撑的主轴组件，该主轴组件由可由主轴头可旋转地支撑的外主轴和设置在外主轴内侧的内心轴沿其轴向方向往复运动。 内心轴插入外心轴的内中空部分，使得在外心轴的内周面与内心轴的外周面之间形成空间。 主轴夹持装置包括压力施加构件，例如设置在外心轴和内心轴之间的空间中的一对活塞或油环，用于在外心轴和内心轴的轴向施加压力。 压力施加构件设置有油室，并且在压力施加构件的轴向外侧的空间中设置有一对夹紧环。 每个成对的夹环包括具有可滑动地彼此接触的锥形表面的内圈和外圈元件。 弹簧构件分别设置在夹紧环的轴向外侧的空间中，用于向外推动外环元件，并且在支撑内心轴的主轴头的接触部分中形成静压袋，其中加压油和空气被供给到 油室通过静压袋。

    Spindle clamping device in machine tool
    2.
    发明授权
    Spindle clamping device in machine tool 失效
    机床工具中的主轴夹紧装置

    公开(公告)号：US5137400A

    公开(公告)日：1992-08-11

    申请号：US726909

    申请日：1991-07-08

    申请人： Makoto Sagara ,  Sadamu Baba

    发明人： Makoto Sagara ,  Sadamu Baba

    IPC分类号： B23Q1/28

    CPC分类号： B23Q1/28 ,  Y10T408/94 ,  Y10T409/309352

    摘要： A device for clamping coaxial, first and second spindles of a machine tool to each other. The first spindle is hollow and rotatably supported by a spindle head. The second spindle is rotatably supported in the first spindle and can be moved back and forth in the axial direction of the second spindle. The device includes a space formed between portions of both the spindles; disc springs are provided in the space to exert an axial force; and a pair of clamp rings are disposed on both sides of the springs, for clamping both the spindles to each other due to a wedge action through the force of the disc springs. An oil chamber is formed at one side of the pair of clamp rings in order to release the clamping of both the spindles when oil pressure is applied. A hydraulic pressure source is provided for supplying pressurized oil into the oil chamber through a static pressure pocket provided at the place where the first spindle is in sliding contact with a bush encircling the first spindle.

    摘要翻译： 用于将机床的同轴，第一和第二主轴彼此夹持的装置。 第一主轴是中空的并由主轴头可旋转地支撑。 第二主轴可旋转地支撑在第一主轴中，并且可以在第二主轴的轴向上前后移动。 该装置包括形成在两个主轴的部分之间的空间; 碟形弹簧设置在该空间中以施加轴向力; 并且一对夹环设置在弹簧的两侧，用于通过盘形弹簧的力由楔形作用将两个心轴彼此夹紧。 在一对夹紧环的一侧形成油室，以便在施加油压时释放两个主轴的夹紧。 提供液压源，用于通过设置在第一主轴与包围第一主轴的衬套滑动接触的位置处的静压袋将加压油供给到油室中。