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2.发明公开
公开(公告)号：EP2686135A1
公开(公告)日：2014-01-22
申请号：EP12705111.8
申请日：2012-02-17
申请人： Comadur S.A.
CPC分类号： G04B39/004 , B24B13/00 , B24B13/06 , B24B41/06 , G04D3/065
摘要： The system comprises a fixing device (25) having a casing (31) that is mounted to rotate according to a first axis and has a movement blank (23'), and a processing device (27) having an abrasive unit (33) mounted to rotate according to a second axis and designed to match the movement blank to form a first curvature. The processing device comprises a displacement unit (35), which is movable according to the first curvature for forming a second curvature. A direction of displacement unit is symmetrical to form the second curvature along one radius. The system comprises a fixing device (25) having a casing (31) that is mounted to rotate according to a first axis and has a movement blank (23'), and a processing device (27) having an abrasive unit (33) mounted to rotate according to a second axis and designed to match the movement blank to form a first curvature. The processing device comprises a displacement unit (35), which is movable according to the first curvature for forming a second curvature. A direction of displacement unit is symmetrical to form the second curvature along one radius, and is asymmetrical to form the second curvature along different radius. The casing is a hollow ring provided against an inner wall in which the blank is fixed and the abrasive unit is displaced in the ring to form first and second concave curves, and the casing is a disc provided against an outer wall in which the blank is fixed and the abrasive unit is displaced in the disc to form first and second convex curves. The abrasive unit is formed by an edge runner, by an actuator, which is moved back and forth against a profile of a cam fixed to the second curvature, and by a controller programmed to move according to the second curvature. Independent claims are included for: (1) a piece of casing; and (2) a timepiece.
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3.发明授权
公开(公告)号：EP2686135B1
公开(公告)日：2015-04-08
申请号：EP12705111.8
申请日：2012-02-17
申请人： Comadur S.A.
CPC分类号： G04B39/004 , B24B13/00 , B24B13/06 , B24B41/06 , G04D3/065
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公开(公告)号：EP2686134A1
公开(公告)日：2014-01-22
申请号：EP12704793.4
申请日：2012-02-17
申请人： Comadur S.A.
摘要： 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.
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