Diameter-variable drill bit

The utility model relates to the technical field of drilling tools, in particular to a diameter-variable drill bit, which is convenient for realizing the diameter change of a drill bit and a drill hole, reducing the condition that an expansion bolt slips out due to loosening and improving the use re...

Full description

Saved in:
Bibliographic Details
Main Authors LI HONGXUN, CHEN JUNWEI, CHEN KAI, WANG JIANWEI
Format Patent
LanguageChinese
English
Published 04.06.2024
Subjects
BORING
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
TRANSPORTING
TURNING
Online AccessGet full text

Cover

More Information
Summary:The utility model relates to the technical field of drilling tools, in particular to a diameter-variable drill bit, which is convenient for realizing the diameter change of a drill bit and a drill hole, reducing the condition that an expansion bolt slips out due to loosening and improving the use reliability. Comprising a drill bit body which is installed at the output end of a drilling machine. The drill bit comprises a drill bit body and further comprises a pushing device, a first fixed tool bit, a second fixed tool bit, a first sliding tool bit and a second sliding tool bit, the first fixed tool bit and the second fixed tool bit are oppositely installed on the lower portion of the outer side wall of the drill bit body, a guide hole is formed in the middle of the outer side wall of the drill bit body, and the first sliding tool bit and the second sliding tool bit are slidably installed in the guide hole. The first sliding tool bit and the second sliding tool bit are oppositely arranged left and right, a cav
Bibliography:Application Number: CN202323077715U