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    • 7. 发明申请
    • TWIST DRILL AND METHOD FOR PRODUCING A TWIST DRILL WHICH METHOD INCLUDES FORMING A FLUTE OF A TWIST DRILL
    • TWIST钻头及其制造方法,包括形成TWIS钻头的流体的方法
    • US20110097976A1
    • 2011-04-28
    • US12886152
    • 2010-09-20
    • Dieter MühlfriedelBernhard BorschertJürgen Schwägerl
    • Dieter MühlfriedelBernhard BorschertJürgen Schwägerl
    • B24B1/00
    • B23B51/02B23B2251/406B24B19/04
    • There is now provided a twist drill and a method for producing a twist drill which method includes forming a flute of a twist drill. The drill has drill material and a tip portion with a cutting lip. The drill has a land structure and a flute to remove chip residue. The land structure has a flute wall and a cutting edge structure that is disposed longitudinally along the flute wall. The cutting edge structure has a first portion at the drill tip portion and a second portion disposed away from the drill tip portion. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater amount of drill material at the tip portion than at the second portion of the cutting edge structure. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater flute volume per length at the second portion of the cutting edge structure than at the drill tip portion. The method provides for forming a drill with a grinding tool to form different angular transitions of the cutting edge structure.
    • 现在提供了一种麻花钻和一种用于生产麻花钻的方法,该方法包括形成麻花钻的长笛。 该钻头具有钻头材料和具有切割唇缘的尖端部分。 该钻具有一个地面结构和一个长笛去除碎屑。 地面结构具有沿着凹槽壁纵向设置的长槽壁和切割边缘结构。 所述切削刃结构在所述钻头末端部分具有第一部分,以及远离所述钻头末端部分设置的第二部分。 沟槽壁在切割边缘结构的第二部分处进一步延伸到边缘结构中,而不是在尖端部分处,以在尖端部分处提供比在切割边缘结构的第二部分处更大量的钻孔材料。 沟槽壁在切割边缘结构的第二部分处比在顶端部分处进一步延伸到平台结构中,以在切割边缘结构的第二部分处比在钻头尖端部分处提供更大的每个长度的凹槽体积。 该方法提供用研磨工具形成钻头以形成切削刃结构的不同角度转变。