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1.发明授权公开(公告)号：US12019424B2
公开(公告)日：2024-06-25
申请号：US17440744
申请日：2020-07-30
申请人： SOOCHOW UNIVERSITY
发明人： Xi Chen , Peiji Guo , Zhuocheng Dai , Yongxiang Zhu , Chenchao Li
CPC分类号： G05B19/19 , B24B13/00 , G05B15/02 , G05B2219/45145 , G05B2219/45157
摘要： A method for numerical control milling, forming and polishing of a large-diameter aspheric lens to solve the problems of long time-consuming and severe tool wear in the machining of a meter-scale large-diameter aspheric surface is disclosed. An aspheric surface is discretized into a series of rings with different radii, and the rings are sequentially machined through generating cutting by using an annular grinding wheel tool; the rings are equally spaced, there are a total of N rings, and the width of any ring is jointly determined by the Nth ring, the (N−1)th ring, positioning accuracy, and a generatrix equation of the aspheric lens, and the nth ring has a curvature radius of Rn=sqrt(R02−k*(n*dx)2); and the aspheric surface is enveloped by a large number of rings.
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公开(公告)号：US11969805B2
公开(公告)日：2024-04-30
申请号：US17440739
申请日：2020-07-30
申请人： SOOCHOW UNIVERSITY
发明人： Xi Chen , Zhuocheng Dai , Peiji Guo , Yongxiang Zhu , Chenchao Li
摘要： A method and device for milling a large-diameter aspheric surface by using a splicing method and a polishing method to solve the problems of large time consumption and serious tool wear in the machining of a meter-scale large-diameter aspheric surface are disclosed. where an aspheric surface is discretized into a series of rings with different radii, and the rings are sequentially machined via generating cutting by using an annular grinding wheel tool with an outer diameter less than ¼ of a diameter of the aspheric surface; the rings are equally spaced, there are a total of N rings, and a width of any ring is jointly determined by the Nth ring, the (N−1)th ring, positioning accuracy and a generatrix equation of the aspheric surface; and the aspheric surface is enveloped by a large number of rings. A contact area between the tool and a workpiece surface is rings.
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公开(公告)号：US10663289B2
公开(公告)日：2020-05-26
申请号：US16326242
申请日：2017-05-09
申请人： SOOCHOW UNIVERSITY
发明人： Peiji Guo , Xi Chen , Jianbin Fan
摘要： A method and an apparatus for detecting a concave cylinder and a cylindrical diverging lens are disclosed. In particular, a method for non-contact interference detection of a cylindrical shape is disclosed. A cylindrical converging lens and a cylindrical diverging lens are combined with a to-be-tested concave cylinder respectively. Wavefront error data of the combination of the cylindrical diverging lens and the to-be-tested concave cylinder and wavefront error data of the combination of the cylindrical converging lens and the to-be-tested concave cylinder are obtained through interference measurement respectively. Wavefront error data of a combination of the cylindrical diverging lens and the cylindrical converging lens is then obtained through interference measurement. Shape error data of the to-be-tested concave cylinder, the cylindrical diverging lens, and the cylindrical converging lens is obtained respectively by using a difference algorithm and a wavefront recovery algorithm.
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