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DRILL HEAD FOR A DEEP HOLE DRILLING TOOL FOR BTA DEEP HOLE DRILLING, AND DEEP HOLE DRILLING TOOL
DRILL HEAD FOR A DEEP HOLE DRILLING TOOL FOR BTA DEEP HOLE DRILLING, AND DEEP HOLE DRILLING TOOL
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机译：深孔钻头的钻头，用于BTA深孔钻头和深孔钻头的钻头
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摘要
A drill head for a deep hole drilling tool. A drill head body is rotatable about an axis of rotation and has a drilling side and a cavity duct with a chip collecting orifice. A cutting edge has a main and a secondary cutting edge cant, the secondary cutting edge cant arranged on a radial outside of the cutting edge. The main and the secondary cutting edge cants form a cutting edge corner and span a rake which is arranged contiguously to the chip collecting orifice. A first guide pad is arranged in a circumferential half, facing away from the rake, and a second guide pad is arranged diametrically opposite the cutting edge corner. The first guide pad can be offset to the cutting edge corner by the amount of a guide pad angle in the circumferential direction of the drill head The guide pad angle amounts to less than 70°.
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