Micro-drillbit and method for processing same

Micro-drillbit and method for processing same

  • CN 102,873,380 A
  • Filed: 10/26/2012
  • Published: 01/16/2013
  • Est. Priority Date: 10/26/2012
  • Status: Active Application
First Claim
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1. a microbit comprises chip area, it is characterized in that, described chip area comprises multistage,, is begun by N+1 section chip area to the direction of boring tail by apex point, and the groove width of every section chip area increases successively, described N 〉

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