一种免磨钻头的制备方法及钻头

Method for preparing grinding-free drill head and drill head

Abstract

The invention provides a manufacturing method of a grinding-free drill bit, which comprises a drill body and a detachable cutting blade connected on the front end of the drill body; the manufacturing method is characterized by comprising the following steps: (1) according to the set depth and width, the front end of the drill body is equipped with a spiral groove for holding the cutting blade; both inner side walls of the spiral groove are arcwall faces, and the two arcwall faces are of central symmetry, so that the entire outline of the spiral groove is of S shape; each arcwall surface is a parallelogram after being unfolded; (2) the cutting blade with side walls being two symmetrical arcwall faces and matched with the inner wall shape of the spiral groove is prepared; (3) the cutting blade is placed into the drill spiral groove, and connected to prepare the grinding-free drill bit. No sequence exists between step (1) and step (2). The manufacturing method also provides the grinding-free drill bit prepared by using the method.
本发明提供了一种免磨钻头的制备方法,其包括钻身及可拆卸的连接在该钻身前端的切削刀片,其特征在于,其包括如下步骤:(1)根据设定的深度和宽度,在所述钻身前端设置一用来容置所述切削刀片的螺旋凹槽,该螺旋凹槽的两内侧壁均为弧形面,且该两弧形面呈中心对称,使该螺旋凹槽的整体轮廓呈“S”形;所述的各弧形面展开后为一平行四边形;(2)制备与所述钻身上螺旋凹槽内壁形状相适配、侧壁为两个对称弧形面的切削刀片;(3)将所述切削刀片置入钻身螺旋凹槽中,并连接,制得免磨钻头。所述的步骤(1)与步骤(2),无先后顺序。本发明还提供了采用前述方法制备的免磨钻头。

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Cited By (7)

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    CN-101992385-AMarch 30, 2011东莞市微创工具科技有限公司Wear-free drill cutting blade and manufacture method thereof
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    CN-102151881-BJune 18, 2014苏茂均一种舍弃式钻头的制备方法及该舍弃式钻头
    CN-102554962-AJuly 11, 2012中电电气(上海)太阳能科技有限公司Perforating cutter
    CN-102896479-AJanuary 30, 2013苏茂均Method for manufacturing drill bit with cutting tool bit replaceable and product thereof
    CN-105345181-AFebruary 24, 2016陕西理工学院Interpolated type linear cutting forming device for rear tool face of twist drill
    CN-106216946-ADecember 14, 2016长沙天和钻具机械有限公司Processing method of rotor wing chambering block