CN213135168U

CN213135168U - Combined counter bore drill bit

Info

Publication number: CN213135168U
Application number: CN202020788396.1U
Authority: CN
Inventors: 郭鹏辉; 祝云杰
Original assignee: Wuxi Xinhuida Precision Machinery Co ltd
Current assignee: Wuxi Xinhuida Precision Machinery Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-05-07
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a modular counter bore drill bit, including fluted drill bit and sleeve, fluted drill bit runs through the sleeve and rather than sliding connection, fluted drill bit includes columniform drillstock and cutting portion, telescopic lower extreme is equipped with chamfer portion, telescopic outer wall welding has the boss, the middle part spiro union of boss has the hand screw that runs through, the front end of hand screw supports on the drillstock. The utility model discloses be equipped with the sleeve in fluted drill's outside, the lower extreme of sliding sleeve is equipped with chamfer portion, consequently can directly carry out the chamfer after drilling, is favorable to improving the efficiency of processing, and telescopic height can be adjusted from top to bottom, and when consequently processing the counter bore, can punch by the depthkeeping, facilitates the use.

Description

Combined counter bore drill bit

Technical Field

The utility model relates to a twist drill bit technical field specifically is a modular counter bore drill bit.

Background

In industrial processing. In the process of mechanical manufacturing, a plurality of workpieces need to be drilled with counter bores. Besides drilling counter bores, chamfering is required to be carried out on openings of hole positions of some workpieces. For the hole position needing chamfering, the traditional method is to drill through a twist drill bit and then chamfer through another chamfering device, and two steps of operation are carried out, so that the processing efficiency is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular counter bore drill bit to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a modular counter bore drill, includes fluted drill and sleeve, fluted drill runs through the sleeve and rather than sliding connection, fluted drill includes columniform drillstock and cutting portion, telescopic lower extreme is equipped with chamfer portion, telescopic outer wall welding has the boss, the middle part spiro union of boss has the hand screw that runs through, the front end of hand screw supports on the drillstock.

Preferably, the drill handle and the cutting part are integrally processed and formed, and length scale marks are arranged on the outer wall of the cutting part.

Preferably, ribs are arranged on two sides of the drill handle, a sliding groove is formed in the inner cavity of the sleeve, and the ribs are connected with the sliding groove in a sliding mode.

Preferably, the side wall of the sleeve is provided with a rectangular hole communicated with the inner cavity.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses be equipped with the sleeve in fluted drill's outside, the lower extreme of sliding sleeve is equipped with chamfer portion, consequently can directly carry out the chamfer after drilling, is favorable to improving the efficiency of processing. The height of the sleeve can be adjusted up and down, so that the counter bore can be punched at a fixed depth when being processed, and the use is convenient.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic top view of the present invention.

In the figure: 1. a sleeve; 2. a twist drill; 21. a drill shank; 22. a cutting portion; 23. ribs; 3. a rectangular hole; 4. a chute; 5. a boss; 6. screwing the screw by hand; 7. and chamfering the corner.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a modular counter bore drill, includes fluted drill 2 and sleeve 1, fluted drill 2 runs through sleeve 1 and rather than sliding connection, and the both sides of drillstock 21 are equipped with rib 23, and the inner chamber of sleeve 1 is equipped with spout 4, rib 23 and spout 4 sliding connection, and fluted drill 2 includes columniform drillstock 21 and cutting part 22, drillstock 21 and cutting part 22 integrated into one piece.

Be equipped with the length scale mark on cutting portion 22's the outer wall, sleeve 1's lateral wall is equipped with the rectangular hole 3 with the inner chamber intercommunication, can observe the scale interval through rectangular hole 3, the degree of depth of the counter bore of scale interval reaction, sleeve 1's lower extreme is equipped with chamfer 7, chamfer 7 is used for the up end of counter bore to carry out the chamfer, sleeve 1's outer wall welding has boss 5, the middle part spiro union of boss 5 has hand screw 6 that runs through, the front end of hand screw 6 supports on drillstock 21, can adjust sleeve 1's lower extreme to the distance of cutting portion 22 bottom after unscrewing hand screw 6, and then conveniently confirm the degree of depth of processing the counter bore.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a modular counter bore drill bit, includes fluted drill (2) and sleeve (1), its characterized in that: twist drill (2) run through sleeve (1) and rather than sliding connection, twist drill (2) include columniform drillstock (21) and cutting part (22), the lower extreme of sleeve (1) is equipped with chamfer portion (7), the outer wall welding of sleeve (1) has boss (5), the middle part spiro union of boss (5) has hand screw (6) of running through, the front end of hand screw (6) supports on drillstock (21).

2. The combination counter bore drill bit of claim 1, wherein: the drill handle (21) and the cutting part (22) are integrally processed and formed, and length scale marks are arranged on the outer wall of the cutting part (22).

3. The combination counter bore drill bit of claim 1, wherein: ribs (23) are arranged on two sides of the drill handle (21), a sliding groove (4) is arranged in the inner cavity of the sleeve (1), and the ribs (23) are connected with the sliding groove (4) in a sliding mode.

4. The combination counter bore drill bit of claim 1, wherein: the side wall of the sleeve (1) is provided with a rectangular hole (3) communicated with the inner cavity.