Strengthen sword fluted drill

The utility model discloses a strengthen sword fluted drill, including drill bit, supporting rod, chip groove, the drill bit passes through spiral shell rasp bar and links to each other with the supporting rod, cascaded first chip -breaker, an annular cutting edge, the 2nd annular cutting edge, the...

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Bibliographic Details
Main Author SUN GUOMEI
Format Patent
LanguageChinese
English
Published 17.08.2018
Subjects
BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
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Summary:The utility model discloses a strengthen sword fluted drill, including drill bit, supporting rod, chip groove, the drill bit passes through spiral shell rasp bar and links to each other with the supporting rod, cascaded first chip -breaker, an annular cutting edge, the 2nd annular cutting edge, the second chip -breaker of being equipped with in proper order on the supporting rod, an annular cutting edge is including long conic section, edge of a knife section, short conic section, be equipped with the alloy head who is used for strengthening the cutting sword on the cutting arris of drill bit,be equipped with the alloy head chip groove on the cutting arris on alloy head side, be equipped with supplementary chip groove in the chip groove of drill bit, still be equipped with the cutting face chip groove on the cutting face of drill bit. The utility model discloses can effectively cut into the segment with rectangular shape cutting bits, prevent that rectangular shape cutting bits from twining the drill bit, gua
Bibliography:Application Number: CN201721896477U