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Drill for deep drilling tool for deep drilling and BTA deep drilling tool
Drill for deep drilling tool for deep drilling and BTA deep drilling tool
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机译：适用于深孔钻具和BTA深孔钻具的深孔钻具
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摘要
Broca (100, 300,400) for a deep drilling tool for deep drilling ejector or BTA / STS comprising: a body rotary drill bit (101) about a rotational axis (113.313) having one side drilling (160) and a channel cavity (107) inside for a recirculating cooling lubricant and chips with at least one chip collecting opening (106) on the side of the bore (160); a blade (109.309) disposed on the side drilling (160), wherein the blade has a main blade with an edge of the main blade (114) and an auxiliary blade with an edge of auxiliary blade (115), wherein the auxiliary blade is disposed on an outer radial side of the blade and the edge of the main blade (114) and the edge of auxiliary blade (115) form a corner knife (120) and a cutting surface (108), which is arranged contiguously the chip collecting opening (106); and guide means (110, 111, 310, 311, 410.411) strips, wherein a first guide (111, 311.411) bar is arranged offset to the corner of the blade (120) at an angle of guide strip (112.412) measured in circumferential direction of the drill (100, 300,400) on a perimeter half opposite the cutting surface (108) of the drill body (101) and a second guide (110, 310,410) batten diametrically opposite the corner of the blade ( 120), characterized in that the guide angle (112.412) strip is less than 70 °.
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