Collet without deformation of the fixation radius of the balance-spring and manufacturing method of the same
    51.
    发明申请
    Collet without deformation of the fixation radius of the balance-spring and manufacturing method of the same 有权
    夹头没有变形的平衡弹簧的固定半径及其制造方法

    公开(公告)号:US20050219957A1

    公开(公告)日:2005-10-06

    申请号:US11094080

    申请日:2005-03-31

    CPC分类号: G04B17/34

    摘要: The collet is formed by a metal band (10) whose inner contour (11) delimits the recesses (11a, 11b, 11c) for driving the collet onto a balance staff (2) and whose outer contour (12) includes a function point (4) between the collet and the balance spring (9) located at the end of an arm (14) at a distance R from the centre 0 of the staff (2) greater than that of any other point (6, 8, 13, 15, 17) of the outer contour (12). It is characterised in that the inner contour (11) includes a discrete number of points of contact (1, 3, 5, 7) with the staff (2) distributed along identical or different angular apertures α and in that width “I” of the band (10) varies such that the compression forces of the contact points (1, 3, 5, 7) on the staff (2) do not substantially alter the distance R after driving in, leading to a friction torque allowing angular orientation of the collet on the staff (2) and not introducing any unbalance.

    摘要翻译: 夹头由金属带(10)形成,金属带(10)的内轮廓(11)限定用于将夹头驱动到平衡杆(2)上的凹部(11a,11b,11c),并且其外轮廓(12)包括 距离工作人员(2)的中心0的距离R处的位于臂(14)的端部处的夹头和平衡弹簧(9)之间的功能点(4)大于任何其他点(6,8 ,13,15,17)。 其特征在于,内轮廓(11)包括离散数量的接触点(1,3,5,7),其中工作人员(2)沿着相同或不同的角度孔α分布,并且在该宽度“I” 带(10)变化,使得工作人员(2)上的接触点(1,3,5,7)的压缩力基本上不改变驱动之后的距离R,导致摩擦转矩允许角度定向 工作人员的夹头(2),不引起任何不平衡。