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Hollow drill bit

A technology of hollow drill bit and drill bit, which is applied in the direction of drill repair, drilling tool accessories, drilling/drilling equipment, etc., and can solve the problem of not being able to drill ring-shaped counterbores on objects.

Inactive Publication Date: 2016-02-17
CHONGQING WUSHAN YUANXIAO MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current drill bit is a solid drill bit, which cannot drill a ring-shaped counterbore on the object

Method used

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  • Hollow drill bit
  • Hollow drill bit

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Experimental program
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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0010] like figure 1 and figure 2 As shown, the structure of the present invention includes a drill bit 1; the drill bit 1 is a cylindrical structure, and the lower end of the drill bit 1 is an annular sawtooth structure.

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PUM

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Abstract

The invention discloses a hollow drill bit which structurally comprises a drill bit, wherein the drill bit is a cylindrical structure; and the lower end of the drill bit is a ring-shaped saw-tooth structure. The hollow drill bit has the beneficial effects that a circular-ring-shaped counter bore can be drilled in an object.

Description

technical field [0001] The invention relates to a drill bit, in particular to a hollow drill bit. Background technique [0002] The current drill bit is a solid drill bit, and this drill bit cannot drill a ring-shaped counterbore on an object. Contents of the invention [0003] The problem to be solved by the present invention is to provide a hollow drill bit, which can make a ring counterbore on an object. [0004] In order to solve the above problems, the technical solution of the present invention is as follows: [0005] The utility model relates to a hollow drill bit, which comprises a drill bit; the drill bit is in a cylindrical structure, and the lower end of the drill bit is in an annular serrated structure. [0006] The beneficial effect of the invention is that the circular counterbore can be drilled on the object. Description of drawings [0007] figure 1 It is the front view of the embodiment of the present invention. [0008] figure 2 for figure 1 bot...

Claims

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Application Information

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IPC IPC(8): B23B51/10
CPCB23B51/10
Inventor 郑福君
Owner CHONGQING WUSHAN YUANXIAO MACHINERY CO LTD