A kind of high-precision drill bit

A kind of high-precision drill bit

  • CN 105,522,200 B
  • Filed: 12/28/2015
  • Issued: 06/28/2019
  • Est. Priority Date: 12/28/2015
  • Status: Active Grant
First Claim
Patent Images

1. a kind of high-precision drill bit, including cutter hub (1) and cutting tip (2), the cutter hub (1) is by shank (5), cutting end part(3) circumferential surface (6) composition and between shank (5) and cutting end part (3), the cutting tip (2) are located at cutting end part (3)On, the cooling duct (8) that cutting end part (3) are through to from shank (5) is equipped in the cutter hub (1), the circumferential surface (6) is equipped withFor the chip pocket (7) of chip to be discharged, which is characterized in that on the corresponding position of each cutting tip (2) on the circumferential surface (6)Equipped with axis gib block group, each axis gib block group includes at least two axis gib blocks (4), the adjacent spindle guide in each axis gib block group toItem (4), circumferential surface (6) and finished surface surround sealing area (10), the week in each axis gib block group between adjacent axis gib block (4)Face (6) is equipped at least one intercommunicating pore (9), and the intercommunicating pore (9) and cooling duct (8) communicate, and the intercommunicating pore (9) is located atIn sealing area (10), the axial length of the sealing area (10) is less than the axial length of chip pocket (7).

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