CN215144999U

CN215144999U - Novel composite drill bit with ultrahigh hardness

Info

Publication number: CN215144999U
Application number: CN202023215252.6U
Authority: CN
Inventors: 陆晓敏
Original assignee: Zhenjiang Baide Precision Tools Co ltd
Current assignee: Zhenjiang Baide Precision Tools Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-14
Anticipated expiration: 2030-12-28

Abstract

The utility model relates to a novel compound drill bit of super high rigidity, including big drill bit and little drill bit, big drill bit one end is equipped with the drilling rod, the inside holding chamber that is equipped with of drilling rod, be equipped with a plurality of positioning seats on the inner wall of holding chamber middle part, the positioning seat both ends are equipped with the constant head tank, holding chamber both ends are equipped with first storage tank and second storage tank respectively, first storage tank is located the one end near the drill shank, first storage tank one end is equipped with the spacing groove, be equipped with first spring and second spring in first storage tank and the second storage tank respectively, second storage tank one end is equipped with movable channel, movable channel and external intercommunication, set up little drill bit among the movable channel, little drill bit includes drilling portion and location portion, location portion one end is equipped with a plurality of locating pieces, the equal symmetry in locating piece both ends is equipped with the stopper. Make the stopper imbed into the constant head tank to rotatory spacing of little drill bit, effectively avoid little drill bit to take place the activity, thereby realize different aperture drilling needs, avoid frequently changing the drill bit, improved drilling efficiency.

Description

Novel composite drill bit with ultrahigh hardness

Technical Field

The utility model belongs to the technical field of the drill bit, concretely relates to novel compound drill bit of super high rigidity.

Background

The drill bit is a cutting tool used by a typical drill or drilling machine to cut a circular hole. The basic principle of the drill bit is to rotate the edge cutting of the drill bit, cut a workpiece and remove drill cuttings through a drill slot. The commonly used drill bits mainly comprise a twist drill, a flat drill, a center drill, a deep hole drill, a trepanning drill and the like. When the drill bit is when the great aperture work piece of drilling, all generally use earlier this drill bit of getting through with a little drill bit earlier, then trade this drill bit, the secondary reaming is gone to the great drill bit of reuse, and the drilling of this kind of mode has not only reduced drilling efficiency, frequently changes the drill bit moreover, damages anchor clamps easily, and intensity of labour strengthens simultaneously, does not adapt to current enterprise development demand, compound drill bit structure among the prior art: including big drill bit and the little drill bit of setting in big drill bit one end, through little drill bit trompil earlier, the needs of big drill bit reaming in order to satisfy drilling of rethread, but this kind of drill bit structure fixed function singleness can only bore the aperture, can not utilize big drill bit to bore the macropore, when boring the macropore, still need change the drill bit.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model discloses a novel compound drill bit of super high rigidity has solved the problem that bores the hole in different apertures and need frequently change the drill bit among the prior art.

The specific technical scheme is as follows:

a novel ultra-high hardness composite drill bit comprises a large drill bit and a small drill bit movably arranged at one end of the large drill bit, wherein a drill handle is arranged at one end of the large drill bit, a drill rod is arranged at the other end of the large drill bit, a containing cavity with a circular structure is arranged in the drill rod, a plurality of strip-shaped locating seats are arranged on the inner wall of the middle part of the containing cavity, the locating seats are uniformly and symmetrically distributed, locating grooves are symmetrically arranged on the side walls at the two ends of each locating seat, a first containing groove and a second containing groove are respectively arranged at the two ends of the containing cavity, the first containing groove is positioned at one end close to the drill handle, a limiting groove corresponding to the positions of the locating grooves is arranged at one end of the first containing groove, a first spring and a second spring are respectively arranged in the first containing groove and the second containing groove, one end of the first spring is pressed at one end of the locating seats, one end of the second spring is pressed at the other end of the locating seats, the movable channel has been seted up to the one end level of second storage tank, and movable channel and external intercommunication, the level runs through the setting among the movable channel little drill bit, little drill bit include drilling portion and location portion, location portion one end is located the holding chamber and is located the center of a plurality of positioning seats, and location portion keeps away from and is equipped with a plurality of locating pieces on the lateral wall of drilling portion one end, and every locating piece is located respectively between two adjacent positioning seats for the locating piece carries on spacingly to the rotation of location portion, and the equal symmetry in every locating piece both ends is equipped with the stopper, and the stopper position on every locating piece corresponds with the positioning groove position on every positioning seat.

Furthermore, the distance between the two ends of the positioning seat and the inner walls of the two ends of the accommodating cavity is not less than the length between the two limit blocks on the positioning block.

Furthermore, the width dimension of each positioning block is matched with the space dimension between two adjacent positioning seats.

Furthermore, the inside wall of positioning seat is the arc structure, just location portion is the cylinder structure, and the lateral wall of location portion sets up with the inner wall laminating of every positioning seat.

Furthermore, the size of the limiting block is matched with that of the limiting groove.

Furthermore, when one end of the positioning part is abutted against the inner wall of one end of the first accommodating groove, the limiting blocks on the positioning blocks are all embedded into the limiting grooves.

The beneficial effects of the utility model are embodied in:

(1) the utility model discloses set up the activity of little drill bit in the inner chamber of big drill bit, when boring the great hole of size, with the locating piece activity to first storage tank department of the location portion of little drill bit for the stopper is embedded into the spacing groove: when boring the less aperture of size, move about the locating piece of the location portion of little drill bit to second storage tank department for the stopper is embedded into in the constant head tank, thereby it is spacing to the rotation of little drill bit, thereby make the electric drill when drilling, through pressing down the electric drill, make the stopper keep in constant head tank or spacing groove, effectively avoid little drill bit to take place the activity, thereby realize different aperture drilling needs, avoid frequently changing the drill bit, improved drilling efficiency.

(2) When the small drill bit is used, the positioning block on the positioning part is embedded into the positioning groove under the action of the second spring; when using big drill bit, because the position of spacing groove is corresponding with the constant head tank position, when making the stopper of locating piece one end imbed the constant head tank under the effect of first spring, before drilling, through pressing the electric drill, make little drill bit support to press on the work piece and the backward activity, thereby make the stopper of the locating piece other end directly imbed the spacing groove on the first storage tank, thereby effectively prevent that little drill bit from moving about, improved the result of use of drill bit.

Drawings

Fig. 1 is a side view of the present invention.

Fig. 2 is a schematic structural view of the present invention when a small drill is used.

Fig. 3 is a schematic structural diagram of the present invention when a large drill is used.

Fig. 4 is a cross-sectional view of the middle-large drill of the present invention.

Fig. 5 is a cross-sectional view of the drill rod of the present invention.

The large drill bit 1, the drill shank 2, the drill rod 3, the accommodating cavity 4, the positioning seat 5, the positioning groove 51, the first accommodating groove 6, the first spring 61, the limiting groove 62, the second accommodating groove 7, the second spring 71, the small drill bit 8, the drilling part 81, the positioning part 82, the positioning block 821 and the limiting block 822.

Detailed Description

For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection is all can.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

As shown in fig. 1-5, a novel ultra-high hardness composite drill bit comprises a large drill bit 1 and a small drill bit 8 movably disposed at one end of the large drill bit 1, wherein one end of the large drill bit 1 is provided with a drill handle 2, the other end of the large drill bit is provided with a drill rod 3, a circular holding cavity 4 is disposed inside the drill rod 3, a plurality of strip-shaped positioning seats 5 are disposed on an inner wall of a middle portion of the holding cavity 4, the positioning seats 5 are uniformly and symmetrically distributed, positioning grooves 51 are symmetrically disposed on sidewalls at two ends of each positioning seat 5, a first accommodating groove 6 and a second accommodating groove 7 are respectively disposed at two ends of the holding cavity 4, the first accommodating groove 6 is located at one end close to the drill handle 2, a limiting groove 62 corresponding to the positioning grooves 51 is disposed at one end of the first accommodating groove 6, a first spring 61 and a second spring 71 are respectively disposed in the first accommodating groove 6 and the second accommodating groove 7, one end of the first spring 61 is pressed against one end of the positioning seats 5, one end of the second spring 71 is abutted against the other ends of the positioning seats 5, a movable channel is horizontally formed in one end of the second accommodating groove 7 and is communicated with the outside, the small drill 8 is horizontally arranged in the movable channel in a penetrating manner, the small drill 8 comprises a drill hole part 81 and a positioning part 82, one end of the positioning part 82 is located in the accommodating cavity 4 and is located in the center of the positioning seats 5, a plurality of positioning blocks 821 are arranged on the side wall of one end, away from the drill hole part 81, of the positioning part 82, each positioning block 821 is located between two adjacent positioning seats 5 respectively, so that the positioning blocks 821 limit rotation of the positioning part 82, two ends of each positioning block 821 are symmetrically provided with limiting blocks 822, and the position of each limiting block 822 on each positioning block 821 corresponds to the position of the positioning groove 51 on each positioning seat 5.

Further, the distance between the two ends of the positioning seat 5 and the inner walls of the two ends of the accommodating cavity 4 is not less than the length between the two limit blocks 822 on the positioning block 821.

Further, the width dimension of each positioning block 821 is matched with the space dimension between two adjacent positioning seats 5.

Further, the inner side wall of the positioning seat 5 is of an arc-shaped structure, the positioning portion 82 is of a cylindrical structure, and the side wall of the positioning portion 82 is attached to the inner wall of each positioning seat 5.

Further, the size of the limiting block 822 is matched with the size of the limiting groove 62.

Further, when one end of the positioning portion 82 abuts against the inner wall of one end of the first receiving groove 6, the limit block 822 on the positioning block 821 is embedded into the limit groove 62.

The working principle is as follows: when boring the big hole of size, remove locating piece 821 of positioning portion 82 of little drill bit 8 to first storage tank 6 department, and compress first spring 61, make stopper 822 imbed under the effect of first spring 61 in the constant head tank 51 of 5 one ends of positioning seats, the electric drill is before drilling, through pressing the electric drill, make little drill bit 8 support press on the work piece and the backward activity, thereby make stopper 822 of the locating piece 821 other end directly imbed in spacing groove 62 on first storage tank 6, thereby realize spacingly: when a small hole is drilled, the positioning block 821 of the positioning portion 82 of the small drill bit 8 is moved to the second receiving groove 7, and the positioning block 821 is under the action of the second spring 71, so that the limiting block 822 is embedded into the positioning groove 51, and the small drill bit 8 is prevented from moving.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A novel ultra-high hardness composite drill bit comprises a large drill bit (1) and a small drill bit (8) movably arranged at one end of the large drill bit (1), wherein one end of the large drill bit (1) is provided with a drill handle (2), the other end of the large drill bit is provided with a drill rod (3), the novel ultra-high hardness composite drill bit is characterized in that a containing cavity (4) with a circular structure is arranged in the drill rod (3), a plurality of strip-shaped positioning seats (5) are arranged on the inner wall of the middle part of the containing cavity (4), the positioning seats (5) are uniformly and symmetrically distributed, positioning grooves (51) are symmetrically arranged on the side walls of the two ends of each positioning seat (5), a first containing groove (6) and a second containing groove (7) are respectively arranged at the two ends of the containing cavity (4), the first containing groove (6) is positioned at one end close to the drill handle (2), one end of the first containing groove (6) is provided with a limiting groove (62) corresponding to the positions of the positioning grooves (51), a first spring (61) and a second spring (71) are respectively arranged in the first accommodating groove (6) and the second accommodating groove (7), one end of the first spring (61) is pressed against one end of the positioning seats (5), one end of the second spring (71) is pressed against the other end of the positioning seats (5), one end of the second accommodating groove (7) is horizontally provided with a movable channel, the small drill bit (8) is horizontally arranged in the movable channel in a penetrating manner, the small drill bit (8) comprises a drilling part (81) and a positioning part (82), one end of the positioning part (82) is arranged in the accommodating cavity (4) and is positioned at the center of the positioning seats (5), a plurality of positioning blocks (821) are arranged on the side wall of one end, away from the drilling part (81), of the positioning part (82), and each positioning block (821) is respectively positioned between two adjacent positioning seats (5), so that the positioning block (821) limits the rotation of the positioning part (82), both ends of each positioning block (821) are symmetrically provided with a limiting block (822), and the position of the limiting block (822) on each positioning block (821) corresponds to the position of the positioning groove (51) on each positioning seat (5).

2. The novel ultra-high hardness composite drill bit as claimed in claim 1, wherein the distance between the two ends of the positioning seat (5) and the inner wall of the two ends of the accommodating cavity (4) is not less than the length between the two limit blocks (822) on the positioning block (821).

3. The new ultra-high hardness composite drill bit as claimed in claim 2, characterized in that the width dimension of each positioning block (821) is adapted to the space dimension between two adjacent positioning seats (5).

4. The novel ultra-high hardness composite drill bit as claimed in claim 1, wherein the inner side wall of the positioning seat (5) is arc-shaped, the positioning part (82) is cylindrical, and the side wall of the positioning part (82) is attached to the inner wall of each positioning seat (5).

5. The novel ultra-high hardness composite drill bit as claimed in claim 1, characterized in that the size of the stopper (822) is adapted to the size of the stopper groove (62).

6. The novel ultra-high hardness composite drill bit as claimed in claim 1, wherein when one end of the positioning portion (82) abuts against an inner wall of one end of the first receiving groove (6), the limiting blocks (822) on the positioning block (821) are all embedded into the limiting grooves (62).