发明名称 |
Process and apparatus for chucking and machining an elongated cylindrical article made of a ceramic material |
摘要 |
<p>A process for chucking and machining an elongated cylindrical article made of a ceramic material according to the present invention, comprises the steps of: (1) chucking the elongated cylindrical ceramic article between chuck heads at longitudinally opposite end portions of said ceramic article; (2) holding the elongated cylindrical article between the chuck heads under such a low chucking pressure as allowing the ceramic article to slip inside a driven side chuck head while being kept inside the chuck heads at the opposite end portions, and slipping the ceramic article inside the chuck heads for a given time under rotation of a driving chuck head so that any positional deviation between the location of a center axis passing centers of of the chuck heads and an axis of the ceramic article may be removed due to a self aligning centrifugal action of the ceramic article; (3) raising the chucking pressure of the chuck heads to such a level as required for machining the ceramic article; and (4) then machining a surface of the ceramic article by a machining tool. <IMAGE></p> |
申请公布号 |
EP0838303(B1) |
申请公布日期 |
2003.02.26 |
申请号 |
EP19970307798 |
申请日期 |
1997.10.02 |
申请人 |
NGK INSULATORS, LTD.;NGK CERAMICS EUROPE S.A. |
发明人 |
NISHIO, AKIFUMI;DEWITTE, CARINE ANNE-MARIE CLAUDINE;PATTIMORE, JEFFREY PHILIP JOHN |
分类号 |
B23B33/00;B23B5/22;B23B23/00;B23B23/04;B23Q3/18;B24B5/04;B24B5/50;B24B15/04;B24B41/06;(IPC1-7):B23Q3/18 |
主分类号 |
B23B33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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