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    • 1. 发明专利
    • 主軸装置
    • 主要主轴装置
    • JP2014237208A
    • 2014-12-18
    • JP2013121927
    • 2013-06-10
    • 株式会社ジェイテクトJtekt Corp
    • MATSUNAGA SHIGERUTANASE RYOTA
    • B23B19/02B23Q1/70B23Q11/00B23Q17/09F16C27/02F16C32/00F16C32/06F16C33/74F16C35/12
    • 【課題】主軸を回転可能に支持する減衰付加軸受に供給する流体の流量を周期的に変動させるように制御することにより、減衰付加軸受の流体の発熱を抑制しながら主軸の振動を抑制する工作機械に使用される主軸装置を提供することを目的とする。【解決手段】主軸装置1は、工具を保持し、回転駆動される主軸20と、流体が供給されることにより主軸20の振動を抑制する減衰付加軸受50と、減衰付加軸受50に流体を供給し、流体の流量Qを調整可能とする流体供給装置60と、流体供給装置60が供給する流体の流量Qを周期的に変動させる制御装置80と、を備えている。【選択図】図4
    • 要解决的问题:提供一种主轴装置,其执行控制以周期性地改变供给到可旋转地支撑主轴的阻尼添加轴承的流体的流量,从而在抑制发热的同时抑制主轴的振动 的阻尼添加轴承的流体,并用于机床。主轴装置1包括:主轴20,其保持工具并被旋转驱动; 阻尼添加轴承50,其接收供给的流体,以抑制主轴20的振动; 流体供应装置60,其将流体供应到阻尼添加轴承50并且可以调节流体的流量Q; 以及周期性地改变由流体供给装置60供给的流体的流量Q的控制装置80。
    • 3. 发明专利
    • Method for selecting tool rotation speed
    • 选择工具转速的方法
    • JP2012187691A
    • 2012-10-04
    • JP2011054991
    • 2011-03-14
    • Jtekt Corp株式会社ジェイテクト
    • OKITA TOSHIYUKITANASE RYOTAMATSUNAGA SHIGERU
    • B23Q15/12B23Q17/12
    • PROBLEM TO BE SOLVED: To provide a method for selecting tool rotation speed which avoids chattering by allowing the estimation of an accurate natural frequency.SOLUTION: S1 is the measurement of a natural frequency of a main shaft system mounted with a reference tool. S2 is the analysis of the natural frequency of the main shaft system mounted with the reference tool. In S3, a correction value is obtained from a difference of compliance and a frequency of the natural frequency obtained in S1, S2. S4 is the analysis of a natural frequency of the main shaft system mounted with a tool to be used. S5 is the correction of the natural frequency analyzed in S4 by the correction value obtained in S3. In S6, a plurality of recommended speeds of tool shaft rotation in which the chattering does not occur are calculated based on the frequency and the compliance order of the natural frequency.
    • 要解决的问题:提供一种通过允许估计精确的固有频率来选择工具旋转速度的方法,其避免抖动。

      解决方案:S1是安装有参考工具的主轴系统的固有频率的测量。 S2是用参考工具安装的主轴系统的固有频率的分析。 在S3中,根据在S1,S2中得到的固有频率的顺差和频率的差异,求出校正值。 S4是安装有要使用的工具的主轴系统的固有频率的分析。 S5是通过在S3中获得的校正值在S4中分析的固有频率的校正。 在S6中,基于固有频率的频率和顺从次数计算出不发生抖动的工具轴旋转的多个推荐速度。 版权所有(C)2013,JPO&INPIT

    • 4. 发明专利
    • Spindle device of machine tool
    • 机床工具主轴装置
    • JP2011240415A
    • 2011-12-01
    • JP2010111773
    • 2010-05-14
    • Jtekt Corp株式会社ジェイテクト
    • MATSUNAGA SHIGERU
    • B23Q17/00B23B19/02
    • PROBLEM TO BE SOLVED: To provide a spindle device of a machine tool which prevents the entry of foreign matter into the detection parts of displacement sensors to prevent the detection accuracy of the detection parts from being lowered and the detection parts from being deteriorated.SOLUTION: This spindle device 1 of a machine tool includes a housing 10 in which air flow passages 11-14 connected to an air supply source are formed, a spindle 40 rotatably supported on the housing 10, and the displacement sensors 71-74 which are disposed at the predetermined phases of the housing 10 and which detect the displacement of the spindle 40 relative to the housing 10 at the respective predetermined phases. The displacement sensors 71-74 are disposed in an air flow area Rv inside the housing 10. The openings 11a-14a of the air flow passages 11-14 are positioned at the same phases of the predetermined phases of the housing 10 in which the displacement sensors 71-74 are disposed.
    • 要解决的问题:提供一种机床的主轴装置,其防止异物进入位移传感器的检测部件,以防止检测部件的检测精度降低,并且检测部件劣化 。 解决方案:机床的主轴装置1包括壳体10,其中形成有连接到空气供应源的空气流动通道11-14,可旋转地支撑在壳体10上的主轴40和位移传感器71- 74,其被布置在壳体10的预定相位处,并且在相应的预定阶段检测心轴40相对于壳体10的位移。 位移传感器71-74设置在壳体10内部的空气流动区域Rv中。空气流动通道11-14的开口11a-14a位于壳体10的预定相位的相同阶段,其中位移 设置传感器71-74。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Spindle device of machine tool
    • 机床工具主轴装置
    • JP2011235364A
    • 2011-11-24
    • JP2010106237
    • 2010-05-06
    • Jtekt Corp株式会社ジェイテクト
    • MATSUNAGA SHIGERU
    • B23Q11/00B23Q17/00B23Q17/12
    • PROBLEM TO BE SOLVED: To provide a spindle device of a machine tool capable of exerting a vibration suppression effect only when vibration can be generated during machining of a workpiece without lowering rotational speed of a spindle.SOLUTION: This spindle device includes an attaching/detaching member 100 arranged between an outer peripheral surface of the spindle 20 and an inner peripheral surface of a housing 10 and provided to switch an integral state and a separation state in relation to the spindle 20 and a fluid supply device 130 for supplying fluid to a space 120b formed between the attaching member 100 and the housing 10 to interpose fluid in the space 120b. When the spindle 20 vibrates, the attaching/detaching member 100 is switched from the separation state to the integral state in relation to the spindle 20.
    • 要解决的问题:提供一种能够仅在不降低主轴的转速的情况下在加工工件时产生振动的情况下才能施加振动抑制效果的机床的主轴装置。 解决方案:该主轴装置包括安装/拆卸构件100,该安装/拆卸构件100布置在主轴20的外周表面和壳体10的内周表面之间,并被提供以相对于主轴切换整体状态和分离状态 20和用于将流体供应到形成在附接构件100和壳体10之间的空间120b以将流体插入空间120b中的流体供应装置130。 当主轴20振动时,安装/拆卸构件100相对于主轴20从分离状态切换到整体状态。版权所有:(C)2012,JPO&INPIT
    • 6. 发明专利
    • Sealing device and sealing method for rotating shaft
    • 用于旋转轴的密封装置和密封方法
    • JP2010164090A
    • 2010-07-29
    • JP2009004889
    • 2009-01-13
    • Jtekt Corp株式会社ジェイテクト
    • MATSUNAGA SHIGERU
    • F16J15/40
    • PROBLEM TO BE SOLVED: To provide a sealing device and a sealing method for a rotating shaft having enhanced sealing effect.
      SOLUTION: A main shaft 3 is rotatably mounted in a storage space 21 of a housing 2 via a bearing 4. A minute clearance 5 is formed between the main shaft 3 and the inner peripheral surface of the housing 2. The minute clearance 5 is formed of an inlet 51 extended axially inward from an end surface of the housing 2, a connection section 52 connected to the inlet 51 extended radially inward, and an extending part 53 extended axially inward from the connection section 52 toward the bearing 4. A plurality of circumferential grooves 353a, 353b for air supply are provided on the connection section 52, having a clearance greater than the minute clearance 5, and forming a ring shape around a rotation shaft. A plurality of discharge passages 254a, 254b extending in the axial direction and opening toward circumferential grooves 353a, 353b for air supply are formed in the housing 2. High pressure air is ejected from the discharge passages 254a, 254b.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种具有增强的密封效果的旋转轴的密封装置和密封方法。 解决方案:主轴3通过轴承4可旋转地安装在壳体2的存放空间21中。在主轴3和壳体2的内周面之间形成微小间隙5.微小间隙 5由从壳体2的端面向轴向内侧延伸的入口51,与径向向内延伸的入口51连接的连接部52和从连接部52向轴承4轴向向内延伸的延伸部53形成。 在连接部52上设置有用于供气的多个周向槽353a,353b,其间隙大于微小间隙5,并且围绕旋转轴形成环形。 在壳体2中形成有沿轴向延伸并且朝向用于供气的周向槽353a,353b开口的多个排出通道254a,254b。高压空气从排出通道254a,254b排出。 版权所有(C)2010,JPO&INPIT
    • 7. 发明专利
    • Main spindle device of machine tool
    • 主要工具主轴装置
    • JP2009297811A
    • 2009-12-24
    • JP2008152746
    • 2008-06-11
    • Jtekt Corp株式会社ジェイテクト
    • MATSUNAGA SHIGERU
    • B23B19/02
    • PROBLEM TO BE SOLVED: To provide a main spindle device of a machine tool adapted to improve the support stiffness of a main spindle. SOLUTION: The main spindle 9 is rotatably supported with respect to a housing 1. A plurality of ring-shaped ball grooves 9b, 9c, 9d and 9e are formed in the outer peripheral surface of the main spindle 9, and balls 10b, 11b, 12b and 13b of bearings 10, 11, 12 and 13 are arranged in these grooves, respectively. An outer ring 10a of the front bearing 10 is fixed to the housing 1, and an outer ring 11a of the first bearing 11 is pressed forward in the axial direction of the main spindle 9 together with a first piston 18 by fluid pressure supplied into a first fluid pressure chamber 19. Outer rings 12a and 13a of the second bearing 12 and the third bearing 13 are pressed rearward in the axial direction of the main spindle 9 together with a second piston 20 and a third piston 22 by fluid pressure supplied into a second fluid pressure chamber 21 and a third fluid pressure chamber 23, respectively. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供适于提高主轴的支撑刚度的机床的主轴装置。 主轴9相对于壳体1可旋转地支撑。在主轴9的外周面上形成有多个环状的滚珠槽9b,9c,9d,9e,滚珠10b 轴承10,11,12和13中的11b,12b和13b分别布置在这些槽中。 前轴承10的外圈10a固定在壳体1上,第一轴承11的外圈11a与第一活塞18一起沿主轴9的轴向向前压入, 第一流体压力室19.第二轴承12和第三轴承13的外圈12a和13a与主轴9的轴向方向一起被压向第二活塞20和第三活塞22。 第二流体压力室21和第三流体压力室23。 版权所有(C)2010,JPO&INPIT
    • 8. 发明专利
    • Seal device for rotary shaft
    • 旋转轴密封装置
    • JP2009085337A
    • 2009-04-23
    • JP2007255686
    • 2007-09-28
    • Jtekt Corp株式会社ジェイテクト
    • MATSUNAGA SHIGERU
    • F16J15/18B23B19/02B23Q11/00
    • B23Q11/0883
    • PROBLEM TO BE SOLVED: To provide a seal device for a rotary shaft capable of preventing invasion of foreign matter such as coolant from a clearance between the rotary shaft and a housing. SOLUTION: This seal device includes a substantially cylindrical housing having a storage space, a main shaft spindle 2 rotatably stored in the storage space and disposed with keeping cylindrical clearance from an inner circumference surface of the housing 1. An absorbent 5 formed in a ring shape out of porous material is disposed on at least one of the housing 1 and the main shaft spindle 2 with facing to the clearance 30. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种能够防止从旋转轴和壳体之间的间隙侵入诸如冷却剂的异物的旋转轴的密封装置。 解决方案:该密封装置包括具有存储空间的大致圆筒形壳体,主轴心轴2,可旋转地存储在存储空间中并且设置成保持与壳体1的内圆周表面的圆柱形间隙。 多孔材料中的环形形状设置在壳体1和主轴心轴2中的至少一个上,面向间隙30.版权所有(C)2009,JPO&INPIT
    • 9. 发明专利
    • 主軸装置
    • 主要主轴装置
    • JP2015009351A
    • 2015-01-19
    • JP2013138957
    • 2013-07-02
    • 株式会社ジェイテクトJtekt Corp
    • IWAI HIDEKISASAKI YUJISAKURAI YASUTADAMATSUNAGA SHIGERU
    • B23B19/02
    • 【課題】主軸に流体の発熱が生じやすい減衰付加軸受を用いる場合であっても、主軸および工具の熱変位を抑制しながら主軸の振動を効果的に抑制することで、高い加工精度を確保する主軸装置を提供することを目的とする。【解決手段】主軸装置1は、工具21を保持し、回転駆動される主軸20と、転がり軸受41〜44よりも工具21側に設けられ、第一流体が供給されることにより主軸20の振動を抑制する減衰付加軸受50と、減衰付加軸受50に第一流体を供給し、第一流体の温度を調整可能とする第一流体供給装置60と、第一流体が存在する主軸20の軸方向範囲20aにおいて各部位における、主軸20の温度変化を抑制するように、主軸20の回転数Rに応じて第一流体供給装置60が供給する第一流体の温度を制御する制御装置90と、を備えている。【選択図】図1
    • 要解决的问题:为了提供一种用于确保高加工精度的主轴装置,通过有效地抑制主轴的振动,同时在抑制主轴和工具的热位移的同时,即使使用容易引起加热的阻尼添加轴承 主轴装置1包括用于保持工具21的旋转驱动的主轴20,相对于滚动轴承41-44设置在工具21侧的阻尼增加轴承50,并且限制了主轴 通过供应第一流体的主轴20,能够通过将第一流体供应到阻尼添加轴承50来调节第一流体的温度的第一流体供应装置60和用于控制由第一流体供应的第一流体的温度的控制装置90 第一流体供应装置60响应于主轴20的转速R,以便在主轴20中抑制主轴20的温度变化 在主轴20的轴向方向范围20a中存在第一流体。
    • 10. 发明专利
    • Machine tool
    • 机床
    • JP2014061567A
    • 2014-04-10
    • JP2012207731
    • 2012-09-21
    • Jtekt Corp株式会社ジェイテクト
    • TANASE RYOTAMATSUNAGA SHIGERUOKITA TOSHIYUKI
    • B23Q15/12B23Q17/09G01L5/00
    • PROBLEM TO BE SOLVED: To provide a machine tool capable of performing a machining work without bringing about chattering vibration, even without a preliminary test machining and without the use of a vibration measurement sensor.SOLUTION: A machine tool 1 includes a main spindle 5 for rotating a boring tool 7, a feed shaft for relatively moving a tool and a workpiece W, and a torque detection part 352 for detecting a load torque of the main spindle 6 in the machining. The machine tool measures an extreme value time interval Δt, Δt, Δtbeing a time interval between adjacent maximum values P, P, P, Pof the load torque fluctuation in machining the workpiece W, determines that the chattering vibration has occurred when the number of times at which the consecutive extreme value time interval becomes the same value reaches a predetermined number, and changes rotational speed of the main spindle.
    • 要解决的问题:提供一种能够进行加工工作而不产生振动振动的机床,即使不进行初步试验加工,也不使用振动测量传感器。解决方案:机床1包括主轴5,主轴5用于 旋转镗刀具7,用于相对移动刀具和工件W的进给轴,以及用于在加工中检测主轴6的负载转矩的扭矩检测部352。 机床测量极值时间间隔Dgr; t,&Dgr; t,&Dgr;在加工工件W时的负载转矩波动的相邻最大值P,P,P,P之间的时间间隔,确定振动振动 当连续极值时间间隔变为相同值的次数达到预定数量并改变主轴的转速时发生。