公开(公告)号：US3790297A

公开(公告)日：1974-02-05

申请号：US3790297D

申请日：1972-10-25

Applicant: MAURSEY E

Inventor： MAURSEY E

IPC: B23B31/00 ,  B23B51/02

CPC classification number: B23B31/005 ,  B23B2231/0204 ,  B23B2240/11 ,  B23B2240/21 ,  B23B2251/02 ,  B23B2251/426 ,  Y10S408/704 ,  Y10T408/907 ,  Y10T408/953

Abstract: The shank for a micro drill 0.06 inch in diameter or less is made from three-like cylindrical rods which are brazed together along engaging lines which are parallel to the center of the rods forming a triangular body with a central aperture therebetween which is also parallel to the rod centers. One end of the joined rods has a drill advanced into the aperture for drilling a hole therein for the driven end of the micro drill. The end may be supported within the drilled aperture by suitable adhesive such as an epoxy, a low temperature solder or the like so that the drill end can readily be removed in case of breakage for replacement without affecting the securement of the three rod sections together with the higher temperature brazing material.

Abstract translation: 直径为0.06英寸或更小的微型钻头的柄由三根圆柱形棒制成，它们沿着与棒的中心平行的接合线钎焊在一起，形成三角形主体，中心孔在其之间，其平行于 杆中心。 连接的杆的一端具有前进到孔中的​​钻头，用于在微钻的从动端钻孔。 端部可以通过合适的粘合剂例如环氧树脂，低温焊料等支撑在钻孔中，使得在不损坏三个杆部分的固定的情况下，钻头可以容易地被移除，而不影响三个杆段的固定以及 较高温度的钎焊材料。