发明名称 |
System for polishing a cover part for a timepiece |
摘要 |
<p>The system (21) has a fixing device (25) including a support (31) for holding a crystalline alumina cover part. A grinding device (27) comprises abrasive units (33) e.g. grindstone, rotatably mounted around a first rotation axis (A3), and polishes the part along a first curvature (C1). The fixing device comprises moving units for moving the support such that the support causes reciprocating movement (B) along a second rotation axis (A4). A contact surface of the abrasive units is curved so as to polish the part along a second curvature (C2) in addition to the first curvature. The cover part is made of sapphire, corundum or ruby materials.</p> |
申请公布号 |
EP2500135(A1) |
申请公布日期 |
2012.09.19 |
申请号 |
EP20110158458 |
申请日期 |
2011.03.16 |
申请人 |
COMADUR S.A. |
发明人 |
TASSETTI, JEAN-PAUL;DERRIEY, GILLES;DUMONT, PATRICE |
分类号 |
B24B13/04;B24B29/00;B24B47/02;B24B47/04;G04D3/06 |
主分类号 |
B24B13/04 |
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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