Apparatus for creating a concave surface from a spectacle blank
    3.
    发明授权
    Apparatus for creating a concave surface from a spectacle blank 有权
    用于从眼镜坯件形成凹面的装置

    公开(公告)号:US06227952B1

    公开(公告)日:2001-05-08

    申请号:US09329505

    申请日:1999-06-10

    IPC分类号: B24B300

    摘要: A method for creation of a surface from a rough blank for spectacles is which is suitable for both brittle-hard materials and for plastics uses makes use of a disk-shaped, rotation-symmetrical tool of relatively large diameter, by means of which the material to be taken off the rough blank is removed with high grinding or milling efficiency in at least two work steps—a plunge-cut step and a shaping step with material removed along a spiral path. The outcome of the last work step is a machining path traveling in a spiral from the outside to the inside with low residual apex height and relatively large apex spacing. The resulting surface needs only slight fine-grinding and polishing aftertreatment. As an option, both a rim machining step adapted to the form of the eyeglass frame and a work step faceting the rim of the eyeglasses can be integrated into the method. Furthermore, tools are proposed for carrying out the grinding and milling process.

    摘要翻译: 用于制造用于眼镜的粗毛坯的表面的方法适用于脆硬材料,并且对于塑料使用,使用相对较大直径的盘形旋转对称的工具,通过该方法材料 在至少两个工作步骤中以高研磨或铣削效率去除粗糙坯料 - 切入步骤和沿着螺旋路径去除材料的成形步骤。 上一个工作步骤的结果是从外部到内部以螺旋形运动的加工路径,具有低残余顶点高度和相对较大的顶点间距。 所得表面仅需稍微精细研磨和抛光后处理。 作为选择,可以将适用于眼镜框形式的轮辋加工步骤和凸出眼镜边缘的工作步骤整合到该方法中。 此外,提出了进行磨削和铣削加工的工具。

    Method and tool for creating a concave surface from a spectacle blank
    5.
    发明授权
    Method and tool for creating a concave surface from a spectacle blank 失效
    从眼镜毛坯上创建凹面的方法和工具

    公开(公告)号:US5938381A

    公开(公告)日:1999-08-17

    申请号:US695789

    申请日:1996-08-12

    IPC分类号: B24B11/00 B24B13/06 B23C9/00

    摘要: A method for creation of a surface from a rough blank for spectacles is which is suitable for both brittle-hard materials and for plastics uses makes use of a disk-shaped, rotation-symmetrical tool of relatively large diameter, by means of which the material to be taken off the rough blank is removed with high grinding or milling efficiency in at least two work steps--a plunge-cut step and a shaping step with material removed along a spiral path. The outcome of the last work step is a machining path traveling in a spiral from the outside to the inside with low residual apex height and relatively large apex spacing. The resulting surface needs only slight fine-grinding and polishing aftertreatment. As an option, both a rim machining step adapted to the form of the eyeglass frame and a work step faceting the rim of the eyeglasses can be integrated into the method. Furthermore, tools are proposed for carrying out the grinding and milling process.

    摘要翻译: 用于制造用于眼镜的粗毛坯的表面的方法适用于脆硬材料,并且对于塑料使用,使用相对较大直径的盘形旋转对称的工具,通过该方法材料 在至少两个工作步骤中以高研磨或铣削效率去除粗糙坯料 - 切入步骤和沿着螺旋路径去除材料的成形步骤。 上一个工作步骤的结果是从外部到内部以螺旋形运动的加工路径,具有低残余顶点高度和相对较大的顶点间距。 所得表面仅需稍微精细研磨和抛光后处理。 作为选择,可以将适用于眼镜框形式的轮辋加工步骤和凸出眼镜边缘的工作步骤整合到该方法中。 此外,提出了进行磨削和铣削加工的工具。