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2. 发明授权

US4180946A Tool holding spindle assembly particularly for a grinding machine 失效
标题翻译：工具夹持主轴装置，特别适用于磨床
公开(公告)号：US4180946A
公开(公告)日：1980-01-01
申请号：US883213
申请日：1978-03-03
申请人： Mats C. D. Heijkenskjold , Olle (Olof) J. G. Hedberg , Vello Klaassen , Sture V. Larsson , Helmut Habermann , Maurice Brunet
发明人： Mats C. D. Heijkenskjold , Olle (Olof) J. G. Hedberg , Vello Klaassen , Sture V. Larsson , Helmut Habermann , Maurice Brunet
IPC分类号： B23Q1/70 , B23Q5/10 , B24B41/04 , F16C39/06 , B24B5/00
CPC分类号： F16C32/0444 , B23Q1/70 , B23Q5/10 , B24B41/044 , F16C32/0489 , F16C2322/39
摘要： The tool-holding spindle assembly, particularly for a grinding machine, comprises means for supporting the shaft of the spindle and a power drive, for example an electric motor for rotating the spindle. The support means comprise at least one electromagnetic radial bearing controlled by a radial detector, having an annular armature mounted on the shaft of the spindle and a fixed armature surrounding this annular armature, an electromagnetic axial bearing having a disc-shaped armature mounted on the shaft of the spindle and a fixed armature, a chain for controlling the radial and/or axial position of the spindle, said chain being connected on the one hand to at least one detector of the radial and/or axial position of the spindle, and on the other hand to excitation coils of the armatures of each magnetic bearing, and means for selectively modifying the signal generated by said at least one position detector. This tool-holding spindle assembly makes it possible to give a rotating spindle a high speed of rotation and the desired rigidity for obtaining a very high machining precision. Further, precise displacements of the tool of limited amplitude may be controlled by modifying the detector's output signal.
摘要翻译：工具保持主轴组件，特别是用于研磨机的工具保持主轴组件包括用于支撑主轴的轴的装置和动力驱动器，例如用于旋转主轴的电动机。支撑装置包括由径向检测器控制的至少一个电磁径向轴承，其具有安装在主轴的轴上的环形衔铁和围绕该环形衔铁的固定电枢，电磁轴向轴承，其具有安装在轴上的盘形电枢的主轴和固定电枢，用于控制主轴的径向和/或轴向位置的链条，所述链条一方面连接到主轴的径向和/或轴向位置的至少一个检测器上，并且在另一方面涉及每个磁性轴承的电枢的励磁线圈，以及用于选择性地修改由所述至少一个位置检测器产生的信号的装置。该工具保持主轴组件使得可以使旋转主轴具有高转速和所需的刚度，以获得非常高的加工精度。此外，可以通过修改检测器的输出信号来控制有限幅度的刀具的精确位移。

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