CN210435430U

CN210435430U - Twist drill with adjustable length

Info

Publication number: CN210435430U
Application number: CN201920849625.3U
Authority: CN
Inventors: 胡朝阳
Original assignee: Danyang Xuyang Tools Co Ltd
Current assignee: Danyang Xuyang Tools Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-05-01
Anticipated expiration: 2029-06-06

Abstract

The utility model provides a twist drill of adjustable length, including the back tail, the supporting head, the dop, adjust the pole, lock nut, a spring, the telescopic link, rubber buffer and back tail cassette, twist drill main part left side is equipped with the back tail, back tail internal assembly is equipped with the supporting head, the supporting head left side is equipped with the telescopic link, the supporting head right side is equipped with the dop, the dop right side is connected with the regulation pole, back tail right side is equipped with lock nut, telescopic link annular side is equipped with the spring, back tail annular side inboard is equipped with rubber buffer, back tail cassette has been seted up to back tail annular side, the inconvenient problem of adjusting the work length that is fit for of original twist drill during operation has been solved in this design, the utility model discloses rational in infrastructure, be convenient for effectively adjust the work length of.

Description

Twist drill with adjustable length

Technical Field

The utility model relates to a twist drill of adjustable length belongs to the twist drill field.

Background

Twist drills are tools that drill round holes in a workpiece by rotary cutting thereof about a fixed axis. The flute is spiral and shaped like twist. The helical groove has 2, 3 or more grooves, but 2 grooves are most common. Twist drills can be used clamped on hand-held drilling tools, both manual and electric, or drilling, milling, turning and even machining centers. The bit material is typically high speed tool steel or cemented carbide.

When using the fluted drill to go on, often can meet the condition that the drill bit is too long or too short, influence the high-efficient work of fluted drill, and traditional fluted drill is mostly the fixed length, will be very inconvenient when needs are adjusted and are fit for working length, the inconvenient working length that is fit for of the inconvenient regulation of current fluted drill during operation, the problem that the aforesaid appears is solved to the fluted drill of an urgent need of adjustable length now.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a twist drill of adjustable length to solve the problem that proposes in the above-mentioned background art, the utility model discloses rational in infrastructure, the working length of being convenient for effectively adjust the twist drill during operation, the practicality is strong.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a twist drill of adjustable length, includes twist drill main part, adjustable mechanism and twist drill tool bit, the inside adjustable mechanism that is provided with of twist drill main part, twist drill main part right side is equipped with the twist drill tool bit, adjustable mechanism includes back tail, clamping head, dop, regulation pole, lock nut, spring, telescopic link, rubber buffer and back tail cassette, twist drill main part left side is equipped with the back tail, back tail inside is equipped with the clamping head, the clamping head left side is equipped with the telescopic link, the clamping head right side is equipped with the dop, the dop right side is connected with the regulation pole, back tail right side is equipped with lock nut, telescopic link annular side is equipped with the spring, back tail annular side inboard is equipped with rubber buffer, back tail cassette has been seted up to back tail annular side.

Furthermore, the diameter of the adjusting rod is smaller than the inner diameter of the locking nut, and the right side of the adjusting rod is welded with the tool bit of the twist drill.

Furthermore, an internal thread is formed in the right side of the inner wall of the rear tail, an external thread is formed in the left side of the annular side face of the locking nut, and the internal thread is meshed with the external thread.

Furthermore, the left side and the right side of the telescopic rod are provided with connecting seats, the left side of the telescopic rod is connected with the inner part of the rear tail through the connecting seats, and the right side of the telescopic rod is connected with the clamping heads through the connecting seats.

Further, terminal surface and back tail inner wall laminating about the rubber buffer, the rubber buffer is equipped with two sets ofly, and two sets of rubber buffer specification are the same.

Furthermore, the clamping head is of a diamond shape and is matched with the clamping head.

The utility model has the advantages that: the utility model discloses a twist drill of adjustable length, because of the utility model discloses add back tail, supporting head, dop, regulation pole, lock nut, spring, telescopic link, rubber buffer pad and back tail cassette, the working length of twist drill can effectively be adjusted to this design, has solved the inconvenient problem of adjusting the working length that is fit for of original twist drill during operation, has improved the utility model discloses an adjustability.

Because of adjusting pole diameter and being less than the lock nut internal diameter, it welds mutually with the fluted drill tool bit to adjust pole right side, this design makes things convenient for the fluted drill tool bit to insert the back tail, internal thread has been seted up because of back tail inner wall right side, the external screw thread has been seted up in lock nut annular side left side, this design makes things convenient for the fastening fluted drill tool bit, be equipped with the connecting seat because of the telescopic link left and right sides, this design makes things convenient for the telescopic link to stretch out and draw back in a flexible way, terminal surface and back tail inner wall are laminated mutually about because of rubber buffer, rubber buffer is equipped with two sets ofly, external strong torsion can be cushioned in this design, prevent the fluted drill main part rupture, because of the dop is the rhombus, dop and holding head phase-match.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of a twist drill with adjustable length according to the present invention;

fig. 2 is a schematic structural view of an adjustable mechanism in a twist drill with adjustable length according to the present invention;

fig. 3 is a front sectional view of an adjustable mechanism of a twist drill with adjustable length according to the present invention;

in the figure: the twist drill comprises a twist drill body 1, a twist drill body 2, an adjustable mechanism 3, a twist drill bit 21, a rear tail 22, a clamping head 23, a clamping head 24, an adjusting rod 25, a locking nut 25, a spring 26, a telescopic rod 27, a rubber cushion 28 and a rear tail clamping seat 29.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a twist drill of adjustable length, includes twist drill main part 1, adjustable mechanism 2 and twist

drill tool bit

3, and 1 inside adjustable mechanism 2 that is provided with of twist drill main part, 1 right side of twist drill main part are equipped with twist drill tool bit 3.

Adjustable mechanism 2 includes back tail 21, holding head 22, dop 23, adjust pole 24, lock nut 25, spring 26, telescopic link 27, rubber buffer pad 28 and back tail cassette 29, twist drill main part 1 left side is equipped with

back tail

21, 21 internal fittings in back tail have holding

head

22, 22 left sides of holding head are equipped with telescopic link 27, 22 right sides of holding head are equipped with

dop

23, 23 right sides of dop are connected with

adjusts pole

24, 21 right sides of back tail are equipped with lock nut 25, 27 annular side of telescopic link are equipped with spring 26, 21 annular side inboard of back tail are equipped with rubber buffer pad 28, back tail cassette 29 has been seted up to 21 annular side of back tail, the inconvenient problem of adjusting the suitable working length of original twist drill during operation has been solved in this design.

The diameter of the adjusting rod 24 is smaller than the inner diameter of the locking nut 25, the right side of the adjusting rod 24 is welded with the twist drill bit 3, the design is convenient for the twist drill bit 3 to be inserted into the rear tail 21, the right side of the inner wall of the rear tail 21 is provided with an internal thread, the left side of the annular side surface of the locking nut 25 is provided with an external thread, the internal thread is meshed with the external thread, the design is convenient for the twist drill bit 3 to be fastened, the left side and the right side of the telescopic rod 27 are provided with connecting seats, the left side of the telescopic rod 27 is connected with the inner part of the rear tail 21 through the connecting seats, the right side of the telescopic rod 27 is connected with the clamping head 22 through the connecting seats, the design is convenient for the telescopic rod 27 to flexibly stretch, the upper end surface and the lower end surface of the rubber buffer cushion 28 are attached to, this design makes the twist drill bit 3 non-slip.

As an embodiment of the present invention: the staff is at first unscrewed lock nut 25, the grow of 25 internal diameters of lock nut, 3 left regulation poles 24 of fluted drill tool bit insert lock nut 25 and get into back tail 21 inside, adjust 24 left dop 23 of pole and block into clamping head 22, at this moment, impel fluted drill tool bit 3 left, it slides left to adjust pole 24 and drive clamping head 22, clamping head 22 drives telescopic link 27 shrink, spring 26 contracts left, spring 26 still can prevent that clamping head 22 from breaking away from dop 23, adjust to suitable length when fluted drill tool bit 3, the staff screws up lock nut 25, lock nut 25 internal diameters diminishes, it is inside back tail 21 to firmly lock regulation pole 24, furthermore, rubber buffer 28 can effectively prevent to meet the circumstances that external strong torsion caused 1 rupture of fluted drill main part, realized above the utility model discloses be convenient for adjust fluted drill main part 1 length.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a twist drill of adjustable length, includes twist drill main part, adjustable mechanism and twist drill tool bit, its characterized in that: an adjustable mechanism is arranged in the twist drill main body, and a twist drill bit is assembled on the right side of the twist drill main body;

but adjustment mechanism includes back tail, holding head, dop, regulation pole, lock nut, spring, telescopic link, rubber buffer and back tail cassette, fluted drill main part left side is equipped with the back tail, back tail inside is equipped with the holding head, the holding head left side is equipped with the telescopic link, the holding head right side is equipped with the dop, the dop right side is connected with the regulation pole, back tail right side is equipped with lock nut, telescopic link annular side is equipped with the spring, back tail annular side inboard is equipped with rubber buffer, back tail cassette has been seted up to back tail annular side.

2. An adjustable length twist drill according to claim 1, wherein: the diameter of the adjusting rod is smaller than the inner diameter of the locking nut, and the right side of the adjusting rod is welded with the tool bit of the twist drill.

3. An adjustable length twist drill according to claim 1, wherein: the right side of the inner wall of the rear tail is provided with an internal thread, the left side of the annular side face of the locking nut is provided with an external thread, and the internal thread is meshed with the external thread.

4. An adjustable length twist drill according to claim 1, wherein: the telescopic link left and right sides is equipped with the connecting seat, the telescopic link left side is connected with the back tail inner part through the connecting seat, the telescopic link right side is connected with the clamping head through the connecting seat.

5. An adjustable length twist drill according to claim 1, wherein: terminal surface and back tail inner wall are laminated mutually about the rubber blotter, the rubber blotter is equipped with two sets ofly, and two sets of rubber blotter specifications are the same.

6. An adjustable length twist drill according to claim 1, wherein: the clamping head is in a diamond shape and is matched with the clamping head.