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1. (WO2017156731) DIAMOND ECCENTRIC DRILL BIT

Pub. No.:    WO/2017/156731    International Application No.:    PCT/CN2016/076498
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Thu Mar 17 00:59:59 CET 2016
IPC: B28D 1/14
Applicants: DANYANG JIN LONG DIAMOND TOOLS CO., LTD.
丹阳金隆钻石工具有限公司
Inventors: ZHU, Weiguang
朱为光
Title: DIAMOND ECCENTRIC DRILL BIT
Abstract:
A diamond eccentric drill bit comprises a cylindrical main body (1) consisting of a hexagonal shank (2) and a cylindrical body (3), and securely installed via the hexagonal shank (2) on a tool. A diamond drill bit (4) is fixed above the cylindrical body (3) of the cylindrical main body (1). The diamond drill bit (4) is annular. An eccentric part (6) is disposed in the annular diamond drill bit (4). The diamond eccentric drill bit is simple and easy to operate, requires no water in operation, has low requirement for machine power, can be used in a rechargeable tool, and can significantly increase safety of an operator.