PUNCH TOOL AND METHOD FOR ROTARY BLADES
    3.
    发明申请
    PUNCH TOOL AND METHOD FOR ROTARY BLADES 审中-公开
    旋转刀具和旋转刀片的方法

    公开(公告)号:US20120192688A1

    公开(公告)日:2012-08-02

    申请号:US13016314

    申请日:2011-01-28

    申请人: LARRY ALLEN

    发明人: LARRY ALLEN

    IPC分类号: B26F1/14 B26F1/00

    摘要: A two piece punch and die button tool is used to punch a hole in a rotary mower blade. The upper punch has a circumferential radius that forms a circumferential radius in the upper side of the hole. The lower die button has a circumferential radius that forms a circumferential radius in the lower side of the hole. The upper and lower circumferential radii of the holes reduces stress risers in the hole and increases the durability and safety of the blade. The punch and die button form the circumferential radii with one stroke of the machine.

    摘要翻译: 使用两片冲压和冲压工具在旋转式割草机叶片上冲孔。 上冲头具有在孔的上侧形成周向半径的周向半径。 下模按钮具有在孔的下侧形成周向半径的周向半径。 孔的上下圆周半径减小了孔中的应力梯度,并增加了叶片的耐久性和安全性。 冲头和模具按钮以机器的一个冲程形成圆周半径。

    Bed knife and method of forming
    4.
    发明申请
    Bed knife and method of forming 审中-公开
    床刀和成型方法

    公开(公告)号:US20050246885A1

    公开(公告)日:2005-11-10

    申请号:US10838862

    申请日:2004-05-04

    摘要: A method of manufacturing a bed knife for a reel mower. The method includes cold roll forming spring steel, flattening and straightening the spring steel, shaping the spring steel through a plurality of rollers to impart a bending force upon the spring steel to define a mounting portion and an upturned portion, and grinding a portion of the upturned portion to form a cutting edge.

    摘要翻译: 一种用于卷取机的床刀的制造方法。 该方法包括冷轧成形弹簧钢,使弹簧钢扁平化和矫直,通过多个辊对弹簧钢进行成型,以在弹簧钢上施加弯曲力,以限定安装部分和上翻部分,并且研磨一部分 上翻部分形成切割边。