Title:
HELICAL MULTILEVEL CUTTING TOOL
Document Type and Number:
WIPO Patent Application WO/2007/051344
Kind Code:
A1
Abstract:
A helical multilevel cutting tool has high heat emission efficiency , great strength and
excellent durability , and can be positioned easily during drilling operation. The
cutting tool includes an cutter shank and a cutter head which are integrally formed,
wherein the cutter head is provided with several helical pieces integrally, each
helical piece has a cutting blade, and a heat emission platform is formed along
the cutting blade, a second cutting blade which faces forwardly as viewed in the
direction of the cutting operation is formed on the front of the heat emission platform
, a cutting blade outer surface is formed between the heat emission platform front
surface and the second cutting blade. An outer front cutting blade is formed on
the top surface of the cutter head at a position where it meets the heat emission platform
front surface, and a front cutting blade is formed between the second cutting
blade and the center of the cutter head top surface.
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Inventors:
LI, Shiqing (Zhangzhuang Cinema Sushe, Xinwen Xintai, Shandong, 27219, CN)
Application Number:
CN2005/001797
Publication Date:
May 10, 2007
Filing Date:
October 31, 2005
Export Citation:
Assignee:
LI, Shiqing (Zhangzhuang Cinema Sushe, Xinwen Xintai, Shandong, 27219, CN)
International Classes:
B23B51/02
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (8th Floor, Vantone New World Plaza 2 Fuchengmenwai Street, Beijing 7, 100037, CN)
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