Drill bit for machining holes in fiber composite materials

Drill bit for machining holes in fiber composite materials

  • CN 104,338,977 A
  • Filed: 07/30/2013
  • Published: 02/11/2015
  • Est. Priority Date: 07/30/2013
  • Status: Active Application
First Claim
Patent Images

1. one kind for carrying out the drill bit of hole machined to fibrous composite, comprise a longitudinal axis, the shank on rotating machinery, a cutter body and a cutting termination can be installed to, it is characterized in that described cutting termination at least containing 2 sword main cutting portions, described cutter body is at least arranged the helicla flute that 2 have 0 °

  • ±

    45 °

    of helical angles;

    The rear knife face in described main cutting portion is the cambered surface of depression, and the apex point of itself and described cutting termination forms the first cusp, and form the second cusp with the shoulder of described cutting termination, the first described cusp exceeds second described cusp 0.1mm ~ 2mm.

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