CN215615348U

CN215615348U - Composite structure of micro drill bit

Info

Publication number: CN215615348U
Application number: CN202122416621.6U
Authority: CN
Inventors: 司宝玉; 马何峰
Original assignee: Huizhou Xinzhuohui Technology Co ltd
Current assignee: Huizhou Xinzhuohui Technology Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-01-25
Anticipated expiration: 2031-10-08

Abstract

The utility model relates to the technical field of drill bit composite structures, and discloses a micro drill bit composite structure which comprises a drill rod, wherein the outer surface of the drill rod is fixedly connected with a protective sleeve, the lower surface of the drill rod is connected with a replaceable drill bit through a stop structure, the inner wall of the protective sleeve is connected with a telescopic movable pipe through a connecting structure, the lower surface of the movable pipe is connected with a baffle plate for buffering through a clamping structure, and the upper surface of the drill rod is provided with a slot for increasing strength. This micro drill bit composite construction, cooperation through protective sheath, activity pipe and connection structure sets up, can promote the activity pipe downwards when not using, and then protects the drill bit in the activity pipe to prevent that the drill bit from taking place to collide with, and set up through the cooperation of activity pipe, joint structure and baffle, when using the activity pipe to protect the lateral wall of drill bit, the baffle can protect the bottom of drill bit, and is more comprehensive in the protection.

Description

Composite structure of micro drill bit

Technical Field

The utility model relates to the technical field of drill bit composite structures, in particular to a micro drill bit composite structure.

Background

A drill with a diameter of less than 3.175mm, commonly called a micro drill, abbreviated as micro drill, must consider a series of factors, such as various elements of the drill itself, processing parameters, hole depth, installation integrity and workpiece structure, in order to make the micro drill exhibit high efficiency in use.

A micro drill bit composite structure disclosed in Chinese Utility model patent application publication No. CN210548311U, comprising a drill bit seat shell, a drill bit clamping shaft, a clamping rod, a splicing port, a replacing seat, a spiral twisted shaft, a tungsten steel drill bit, a diamond-shaped opening head and a blade back, wherein the drill bit seat shell is installed on the annular side surface of a drill bit main body, the drill bit clamping shaft is installed on the inner side of the annular side surface of the drill bit seat shell, the splicing port is arranged on the inner side of the annular side surface of the drill bit seat shell, the clamping rod is installed inside the drill bit clamping shaft, the replacing seat is installed on the right side of the drill bit clamping shaft, the drill bit tail is installed on the right end surface of the clamping rod, the spiral twisted shaft is installed on the right end surface of the drill bit tail, the tungsten steel drill bit is connected with the tungsten steel drill bit, the diamond-shaped opening head is installed on the right end surface of the tungsten steel drill bit, the blade back is arranged on the annular side surface of the tungsten steel drill bit, the design solves the problem that the prior composite structure which can not effectively realize the high efficiency and practicability of the micro drill bit, the utility model has reasonable structure, is convenient for realizing the composite structure of the micro drill bit and is more durable.

However, the device has some disadvantages in the actual use, such as the inconvenience of protecting the blade at one end and the inconvenience of replacing the blade after the blade is used for a certain period of time, which requires a facility to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a micro drill bit composite structure, which solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a micro drill bit composite construction, includes the drilling rod of outer fixed surface connection with protective sheath, the lower surface of drilling rod is connected with removable drill bit through locking structure, the inner wall of protective sheath is connected with the telescopic expansion pipe through connection structure, the lower surface of expansion pipe is connected with the baffle that is used for the buffering through joint structural connection, the slot that is used for the gaining in strength is offered to the upper surface of drilling rod, the upper surface welding of slot has the installation head that is used for the installation, the keyway that is used for the location is offered to the upper surface of installation head.

Optionally, the stop structure comprises a groove formed in the bottom of the drill rod, and a limit pin for fixing is inserted into one side of the groove.

Optionally, one side of the drill bit is provided with a limiting hole with the size consistent with that of the limiting pin, and the limiting pin penetrates through the limiting hole to enable the drill bit to be located at the stop position.

Optionally, the connection structure includes the spout of seting up at protective sheath inner wall, the outer fixed surface of activity pipe be connected with can with the slider of spout joint, the surface of slider and the inner wall joint of spout.

Optionally, the clamping structure includes the buckle of fixed connection in movable pipe lower surface one side, the draw-in groove unanimous with the buckle size is seted up to the both sides of the upper surface of baffle, the surface of buckle and the inner wall joint of draw-in groove.

Optionally, the middle part of the outer surface of the protective sleeve is fixedly connected with an identification sticker for recording information, and the middle part of the upper surface of the baffle is fixedly connected with a cushion pad for protecting the drill bit.

(III) advantageous effects

The utility model provides a micro drill bit composite structure, which has the following beneficial effects:

1. this micro drill bit composite construction, cooperation through protective sheath, activity pipe and connection structure sets up, can promote the activity pipe downwards when not using, and then protects the drill bit in the activity pipe to prevent that the drill bit from taking place to collide with, and set up through the cooperation of activity pipe, joint structure and baffle, when using the activity pipe to protect the lateral wall of drill bit, the baffle can protect the bottom of drill bit, and is more comprehensive in the protection.

2. This micro drill bit composite construction sets up through the cooperation of drilling rod, locking structure and drill bit, after using a period drill bit wearing and tearing, can change the drill bit of wearing and tearing, need not change whole drilling rod, has reduced use cost to a certain extent to through the cooperation setting of slot and installation head, can be as required with installing the head welding on the drilling rod, more nimble when using.

Drawings

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

FIG. 2 is a schematic view of the present invention in a storage configuration;

FIG. 3 is a schematic cross-sectional view of a protective cover according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a drill stem; 2. a protective sleeve; 3. a drill bit; 4. a movable tube; 5. a baffle plate; 6. a slot; 7. a mounting head; 8. a groove; 9. a spacing pin; 10. a limiting hole; 11. a chute; 12. a slider; 13. buckling; 14. a card slot; 15. label paste; 16. a cushion pad; 17. a keyway.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a micro drill bit composite structure comprises a drill rod 1, wherein the outer surface of the drill rod 1 is fixedly connected with a protective sleeve 2, the middle part of the outer surface of the protective sleeve 2 is fixedly connected with an identification sticker 15 for recording information, the middle part of the upper surface of a baffle 5 is fixedly connected with a cushion 16 for protecting a drill bit 3, the information of the drill bit 3 can be written on the identification sticker 15 in the using process, the information of the drill bit 3 can be checked when the drill bit is blocked by a movable tube 4, the required drill bit 3 is convenient to take, the lower surface of the drill rod 1 is connected with a replaceable drill bit 3 through a stop structure, the stop structure comprises a groove 8 arranged at the bottom of the drill rod 1, a limit pin 9 for fixing is inserted into one side of the groove 8, a limit hole 10 with the size identical to that of the limit pin 9 is arranged on one side of the drill bit 3, the limit hole 10 penetrates through the limit pin 9 to enable the drill bit 3 to be located at the stop position, the drill bit 3 is inserted into the groove 8 below the drill rod 1, the groove 8 can play a primary fixing role for the drill bit 3, at the moment, the limiting hole 10 on the drill bit 3 can be aligned with the limiting hole 10 on one side of the groove 8, the drill bit 3 can be stably fixed at the bottom of the drill rod 1 after the limiting pin 9 is inserted into the limiting hole 10, the limiting pin 9 is ejected out of the limiting hole 10 by using an ejector pin and other articles during disassembly, and the drill bit 3 can be taken down from the drill rod 1;

the inner wall of the protective sleeve 2 is connected with a telescopic movable tube 4 through a connecting structure, the connecting structure comprises a chute 11 arranged on the inner wall of the protective sleeve 2, the outer surface of the movable tube 4 is fixedly connected with a sliding block 12 which can be clamped with the chute 11, the outer surface of the sliding block 12 is clamped with the inner wall of the chute 11, the movable tube 4 can move up and down in the protective sleeve 2, in the process that the movable tube 4 slides up and down, the sliding block 12 on the side surface of the movable tube 4 can slide in the chute 11, when a drill bit 3 needs to be used for drilling, the movable tube 4 can slide up and rotate, and then the movable tube 4 can be fixed at the top of the protective sleeve 2, and the drill bit 3 below is exposed;

the lower surface of the movable tube 4 is connected with a baffle 5 for buffering through a clamping structure, the clamping structure comprises a buckle 13 fixedly connected to one side of the lower surface of the movable tube 4, two sides of the upper surface of the baffle 5 are provided with clamping grooves 14 with the same size as the buckle 13, the outer surface of the buckle 13 is clamped with the inner walls of the clamping grooves 14, the upper surface of the drill rod 1 is provided with a slot 6 for increasing strength, an installation head 7 for installation is welded on the upper surface of the slot 6, the upper surface of the installation head 7 is provided with a key groove 17 for positioning, when welding, the mounting head 7 can be inserted into the slot 6 on the drill rod 1 and then welded, so that the transverse bearing capacity of the drill rod 1 is improved, the risk of breakage between the drill rod 1 and the mounting head 7 is reduced, when the baffle 5 needs to be mounted, the buckle 13 is inserted into the clamping groove 14 on the baffle 5, and then the baffle 5 is rotated to fix the baffle 5 below the movable pipe 4.

In the utility model, the working steps of the device are as follows:

1. taking out the drill bit 3 to be used, fixing the drill bit 3 at the bottom of the drill rod 1 by using the limiting pin 9, and writing the information of the drill bit 3 on the identification sticker 15;

2. after the installation is finished, the movable pipe 4 slides downwards, and then the baffle 5 is installed on the movable pipe 4 to protect the drill bit 3;

3. when in use, the baffle 5 is rotated, the baffle 5 is taken off from the movable tube 4, then the movable tube 4 is pushed upwards and rotated, and the movable tube 4 is fixed at the top end of the protective sleeve 2;

4. when the drill bit 3 needs to be replaced, the ejector pin is used for ejecting the limiting pin 9 out of the limiting hole 10, and then a new drill bit 3 is fixed on the drill rod 1.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a micro drill bit composite construction, includes drilling rod (1) that outer fixed surface is connected with protective sheath (2), its characterized in that: the lower surface of drilling rod (1) is connected with removable drill bit (3) through locking structure, the inner wall of protective sheath (2) is connected with telescopic activity pipe (4) through connection structure, the lower surface of activity pipe (4) is connected with baffle (5) that are used for the buffering through joint structural connection, slot (6) that are used for gaining in strength are seted up to the upper surface of drilling rod (1), the last skin weld of slot (6) has installation head (7) that are used for the installation, keyway (17) that are used for the location are seted up to the upper surface of installation head (7).

2. A micro-drill composite structure, according to claim 1, wherein: the stop structure comprises a groove (8) formed in the bottom of the drill rod (1), and a limiting pin (9) used for fixing is inserted into one side of the groove (8).

3. A micro-drill composite structure, according to claim 2, wherein: one side of the drill bit (3) is provided with a limiting hole (10) with the size consistent with that of the limiting pin (9), and the limiting hole (10) is penetrated by the limiting pin (9) to enable the drill bit (3) to be located at a stop position.

4. A micro-drill composite structure, according to claim 1, wherein: connection structure is including seting up spout (11) at protective sheath (2) inner wall, the outer fixed surface of activity pipe (4) is connected with slider (12) that can with spout (11) joint, the surface of slider (12) and the inner wall joint of spout (11).

5. A micro-drill composite structure, according to claim 1, wherein: the joint structure includes buckle (13) of fixed connection in movable tube (4) lower surface one side, draw-in groove (14) unanimous with buckle (13) size are seted up to the both sides of the upper surface of baffle (5), the surface of buckle (13) and the inner wall joint of draw-in groove (14).

6. A micro-drill composite structure, according to claim 1, wherein: the middle part fixedly connected with of protective sheath (2) surface is used for the sign subsides (15) of record information, the middle part fixedly connected with of baffle (5) upper surface is used for protecting blotter (16) of drill bit (3).