| 摘要 |
The invention relates to a machine comprising a train of grinding stones ( 21 ), mounted to rotate about a first axis (A-A'), a lens support ( 15 ), provided with means ( 37 ), for rotating the lens ( 35 ) about a second axis (B-B') parallel to the first axis (A-A'), means ( 13, 39 ) for relative radial and axial positioning of the lens support ( 15 ) with relation to the train of grinding stones ( 21 ) and a tool carrier unit ( 17 ) with a tool ( 81; 83; 85 ) fixed to a tool support shaft ( 75 ) rotating about a third axis (C-C'). In an active position the tool is adjacent to the second axis (B-B') and the third axis (C-C') with a variable angle with relation to the second axis (B-B'). The tool support unit ( 17 ) further comprises means ( 79 ) for controlling the angle of inclination of the third axis (C-C') with relation to the second axis (B-B'), when the tool ( 81, 83, 85 ) is at a distance from the lens ( 35 ). Of application to the grinding of ophthalmic lenses.
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