CN114083027B - High-strength combined drill bit structure - Google Patents
High-strength combined drill bit structure Download PDFInfo
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- CN114083027B CN114083027B CN202111290305.7A CN202111290305A CN114083027B CN 114083027 B CN114083027 B CN 114083027B CN 202111290305 A CN202111290305 A CN 202111290305A CN 114083027 B CN114083027 B CN 114083027B
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- drill body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
Abstract
The invention relates to a high-strength combined type drill bit structure which comprises a drill handle and a drill body, wherein straight grooves are formed in two sides of the drill body, the drill handle is detachably connected with the rear end of the drill body, the drill body comprises a first cutting part, a second cutting part and a third cutting part, the diameters of the first cutting part, the second cutting part and the third cutting part are sequentially connected from small to large, inserting grooves are formed in the front ends of the second cutting part and the third cutting part, positioning holes are formed in two sides of each inserting groove, inserting blocks are arranged at the rear ends of the first cutting part and the second cutting part, the first cutting part and the second cutting part are respectively connected with the inserting grooves in the second cutting part and the third cutting part through the inserting blocks in a matched mode, two inserting holes are formed in each inserting block, when the positioning holes correspond to the inserting holes close to the first cutting part, the inserting blocks are completely inserted into the inserting grooves, and positioning pins penetrate through the inserting holes and the positioning holes. When one part of the drill body is damaged, the drill body can be detached and replaced, so that the normal use of the drill bit is ensured, and the use cost is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of drilling tools, and particularly relates to a high-strength combined type drill bit structure.
Background
The drill bit is a tool commonly used in daily life and is mainly used in various industries such as machine manufacturing. The drill bit variety has a lot, and wherein pagoda bores the ladder and bores, and this kind of drill bit collects multiple diameter as an organic whole, and the diameter increases in proper order from the front end, and a drill bit fungible many drill bits are used, and the hole of different diameters is processed as required, is favorable to improving production efficiency and satisfies the requirement of modern advanced processing equipment. Meanwhile, the drill bit is a quick-wear part, the cutting edge of the drill bit can be subjected to passivation wear after being cut for a long time and needs to be replaced, the pagoda drill comprises a working part with various diameters, the front end part of the drill bit is often damaged, the whole drill bit cannot be used, the drill bit is replaced at every time, waste is caused, and meanwhile, due to the structural characteristics of the pagoda drill, the drill bit can only be used for drilling thin plates, deeper holes cannot be machined, and the defect of the pagoda drill is overcome.
Disclosure of Invention
The invention aims at the problems and discloses a high-strength combined drill bit structure which solves the problems that a pagoda drill in the prior art is integrally scrapped and the use cost is increased after being worn for a long time.
The specific technical scheme is as follows:
a high-strength combined type drill bit structure comprises a drill handle and a drill body, wherein the drill bit is in a step shape, a drilling part is arranged at the front end of the drill body, straight grooves are formed in two sides of the drill body, two sides of each straight groove are in a plane structure, the rear end of the drill body is detachably connected with the drill handle, the drill body comprises a first cutting part, a second cutting part and a third cutting part, the diameters of the first cutting part, the second cutting part and the third cutting part are sequentially connected from small to large, inserting embedding grooves are formed in the front ends of the second cutting part and the third cutting part, inner walls of two sides, corresponding to the inserting embedding grooves, of the inserting embedding grooves are in plane structures which are parallel to each other, positioning holes are formed in two sides of each inserting embedding groove, the two positioning holes located in two sides of the straight grooves are symmetrical in position, inserting embedding blocks are arranged at the rear ends of the first cutting part and the second cutting part, the first cutting part and the second cutting part are respectively matched with the inserting embedding grooves in the second cutting part through the inserting embedding blocks, two inserting embedding holes which are distributed along the axial direction are aligned with the positioning holes, and the positioning holes are formed in the side walls of the inserting embedding blocks, and the positioning holes are completely flush with the positioning holes, and the positioning pins are arranged in the side walls of the inserting embedding blocks;
the drill bit is connected with the drill handle through the connecting rod, one end of the connecting rod is sequentially provided with a limiting part and a threaded connecting part, the limiting part is positioned at one end close to the drill body, the longitudinal section of the limiting part is of a polygonal structure, the longitudinal section of the threaded connecting part is circular, and threads are arranged on the side wall of the threaded connecting part; the storage tank has been seted up at drillstock inner chamber center, the storage tank longitudinal section is polygonized structure, and spacing mouthful has been seted up at the one end center of storage tank, spacing mouthful size shape with spacing portion size shape looks adaptation, be equipped with adapter sleeve and spring in the storage tank, the adapter sleeve lateral wall sets up with the laminating of storage tank inner wall, be equipped with on the adapter sleeve inside wall screw thread and with threaded connection looks adaptation, the spring is located the one end that is close to spacing mouthful, and spring one end supports and presses on storage tank one end inner wall, and the other end supports and presses the one end at the adapter sleeve for the adapter sleeve supports and lean on storage tank other end inner wall, through adapter sleeve and threaded connection portion threaded connection to make spacing portion and spacing mouthful cooperate, realize the dismantlement between drillstock and the drill body and be connected.
Furthermore, an internal thread is arranged on the inner wall of the inserting and embedding hole, an external thread matched with the internal thread of the inserting and embedding hole is arranged in the middle of the positioning pin, and the positioning of the positioning pin is realized through threaded connection between the middle of the positioning pin and the inner wall of the inserting and embedding hole.
Furthermore, two ends of the positioning pin are provided with adjusting grooves for screwing.
Further, the size of the insertion groove on the second cutting part is smaller than that of the insertion groove on the third cutting part.
Furthermore, the cross section of the inserting block is of a Z-shaped structure, and two ends of the inserting block are arranged in an arc surface structure.
Furthermore, the length dimension of the threaded connection part is not less than that of the accommodating groove.
Furthermore, a positioning groove with a circular structure is arranged in the center of the inner wall of one end of the accommodating groove, and the positioning groove is matched with the front end of the threaded connecting part for positioning.
Furthermore, when the limiting part is abutted against one end of the limiting opening of the drill shank, the threaded connecting part is in threaded connection with one end of the inner wall of the connecting sleeve.
The invention has the beneficial effects that:
(1) According to the drill bit, the drill body is formed in a multi-stage structure, the inserting and embedding block is matched with the inserting and embedding groove in a filling manner and then is matched with the positioning pin for fixing, when one part of the drill body is damaged, the drill bit can be detached and replaced, the normal use of the drill bit is guaranteed, and the use cost is effectively reduced.
(2) Two inserting embedding holes are formed in the inserting embedding block, when a deeper hole is drilled, the position of the inserting embedding block in the inserting embedding groove is adjusted, the positioning pin is matched with the other inserting embedding hole in the inserting embedding block to position, so that the cutting portion can extend, and the function of drilling a deep hole in a pagoda is realized.
(3) The positioning pin and the inserting and embedding hole are in threaded connection, so that the problem that the positioning pin is loosened and even falls off when the drill bit rotates at a high speed is effectively avoided, and the positioning of the inserting and embedding block is ensured.
(4) The drill bit and the drill handle are detachably connected, so that the connecting structure is stable, the disassembly and the assembly are relatively simple, only the drill body needs to be replaced when the drill bit is damaged, the drill handle does not need to be replaced, the material is saved, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the invention.
Fig. 2 is an exploded view of the invention.
Fig. 3 is a cross-sectional view between the drill body and the drill shank according to the invention.
Fig. 4 is a schematic structural view of the drill body and the drill shank of the present invention at the beginning of the threaded connection.
FIG. 5 is a schematic structural view of the drill body and the drill shank of the present invention after the installation.
The drill comprises a drill body 1, a drilling part 11, a straight groove 12, a first cutting part 13, a second cutting part 14, an insertion groove 141, a positioning hole 1411, an insertion block 142, an insertion hole 1421, an internal thread 1422, a positioning pin 143, an external thread 1431, an adjusting groove 1432, a third cutting part 15, a connecting rod 16, a threaded connection part 161, a limiting part 162, a drill shank 2, an accommodating groove 21, a limiting opening 211, a connecting sleeve 212, a spring 213 and a positioning groove 214.
Detailed Description
In order to make the technical scheme of the invention clearer and clearer, the invention is further described with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent replacement and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention. The fixing and the arrangement of the fixing and the connection are all general connection modes in the mechanical field, and the fixing and the connection can be performed by welding, bolt and nut connection and screw connection.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-5, a high-strength combined drill bit structure comprises a drill handle 2 and a drill body 1, wherein the drill bit is in a step shape, a drilling part 11 is arranged at the front end of the drill body 1, straight grooves 12 are arranged at two sides of the drill body 1, both sides of the straight grooves 12 are in a planar structure, the rear end of the drill body 1 is detachably connected with the drill handle 2, the drill body 1 comprises a first cutting part 13, a second cutting part 14 and a third cutting part 15, the diameters of which are sequentially connected from small to large, insertion grooves 141 are arranged at the front ends of the second cutting part 14 and the third cutting part 15, inner walls at two sides corresponding to the insertion grooves 141 and the straight grooves 12 are in a planar structure which are parallel to each other, positioning holes 1411 are arranged at both sides of the insertion grooves 141, the positions between the two positioning holes 1411 at both sides of the straight grooves 12 are symmetrical, insertion blocks 142 are arranged at the rear ends of the first cutting part 13 and the second cutting part 14, the size and shape of the insertion block 142 are matched with those of the insertion groove 141, the first cutting part 13 and the second cutting part 14 are respectively connected with the insertion groove 141 of the second cutting part 14 and the third cutting part 15 through the insertion block 142 in a matching manner, two insertion holes 1421 distributed along the axial direction are formed in the insertion block 142, the positions of the insertion holes 1421 correspond to those of the positioning hole 1411, and when the positioning hole 1411 corresponds to the position of one insertion hole 1421 close to the first cutting part 13, the insertion block 142 is completely inserted into the insertion groove 141, the insertion hole 1421 and the positioning hole 1411 are internally provided with a positioning pin 143 in a penetrating manner, and the side walls at two ends of the positioning pin 143 are respectively flush with the side walls of the two straight grooves 12 at two sides of the drill body 1;
the drill bit is connected with the drill handle 2 through the connecting rod 16, one end of the connecting rod 16 is sequentially provided with a limiting part 162 and a threaded connecting part 161, the limiting part 162 is located at one end close to the drill body 1, the longitudinal section of the limiting part 162 is of a polygonal structure, the longitudinal section of the threaded connecting part 161 is circular, and threads are arranged on the side wall of the threaded connecting part 161; storage tank 21 has been seted up at 2 inner chamber centers of drillstock, storage tank 21 longitudinal section is polygonized structure, and spacing mouthful 211 has been seted up at the one end center of storage tank 21, spacing mouthful 211 size shape with spacing portion 162 size shape looks adaptation, be equipped with adapter sleeve 212 and spring 213 in the storage tank 21, adapter sleeve 212 lateral wall and the laminating setting of storage tank 21 inner wall, be equipped with the screw thread on the adapter sleeve 212 inside wall and with threaded connection portion 161 looks adaptation, spring 213 is located the one end that is close to spacing mouthful 211, and spring 213 one end supports presses on storage tank 21 one end inner wall, and the other end supports presses the one end at adapter sleeve 212 for adapter sleeve 212 supports and leans on storage tank 21 other end inner wall, through adapter sleeve 212 and threaded connection portion 161 threaded connection, and make spacing portion 162 cooperate with spacing mouthful 211, realize dismantling between drillstock 2 and the drill body 1 and be connected.
Furthermore, an internal thread 1422 is arranged on the inner wall of the insertion hole 1421, an external thread 1431 matched with the internal thread 1422 of the insertion hole 1421 is arranged in the middle of the positioning pin 143, and the positioning pin 143 is positioned by connecting the middle of the positioning pin 143 with the inner wall of the insertion hole 1421 through a thread.
Further, both ends of the positioning pin 143 are provided with adjusting grooves 1432 for screwing.
Further, the size of the insertion groove 141 of the second cutting portion 14 is smaller than that of the insertion groove 141 of the third cutting portion 15.
Furthermore, the cross section of the insertion block 142 is a Z-shaped structure, and two ends of the insertion block 142 are arranged in an arc structure.
Further, the length dimension of the threaded connection portion 161 is not less than the length dimension of the receiving groove 21.
Further, a positioning groove 214 with a circular structure is disposed in the center of the inner wall of one end of the accommodating groove 21, and the positioning groove 214 is matched with the front end of the threaded connection portion 161 for positioning.
Further, when the position-limiting portion 162 abuts against one end of the position-limiting opening 211 of the drill shank 2, the threaded connection portion 161 is in threaded connection with one end of the inner wall of the connection sleeve 212.
The principle of drill body installation and disassembly: firstly, screwing the positioning pin 143 by a tool to separate the positioning pin 143 from the insert block 142, so that the insert block 142 can be separated from the insert groove 141 and detached; when the length of the cutting portion is adjusted, the inserting block 142 is moved to make the other inserting hole 1421 correspond to the positioning hole 1411, and then the positioning pin 143 is inserted and screwed to fix the inserting block, so that the two ends of the positioning pin 143 are flush with the straight groove 12, thereby completing the adjustment.
The drill handle mounting and dismounting principle is as follows: when the drill body 1 is installed, the threaded connection portion 161 of the connection rod 16 is embedded into the accommodating groove 21 and is in threaded connection with the inner wall of the connection sleeve 212 until the limiting portion 162 abuts against one end of the drill shank 2, at the moment, the front end of the threaded connection portion 161 is in threaded connection with one end of the inner wall of the connection sleeve 212, the drill body 1 is stretched outwards and rotated, the threaded connection portion 161 drives the connection sleeve 212 to compress the spring 213 and is in threaded connection, after the threaded connection is in place, the drill body 1 is rotated, the limiting portion 162 is matched with the limiting opening 211, then the drill body 1 is loosened, one end of the threaded connection portion 161 is embedded into the positioning groove 214 under the action of the spring 213, meanwhile, the limiting portion 162 is embedded into the limiting opening 211, the drill body 1 is attached to the drill shank 2, connection is achieved, in the process of disassembling, the drill body 1 needs to be stretched outwards and then rotated, the threaded connection portion 161 is separated from the connection sleeve 212, and accordingly separation is achieved.
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 are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A high-strength combined type drill bit structure comprises a drill handle (2) and a drill body (1), wherein the drill bit is in a step shape, a drilling part (11) is arranged at the front end of the drill body (1), straight grooves (12) are formed in two sides of the drill body (1), two sides of each straight groove (12) are in a plane structure, the combined type drill bit structure is characterized in that the rear end of the drill body (1) is detachably connected with the drill handle (2), the drill body (1) comprises a first cutting part (13), a second cutting part (14) and a third cutting part (15) which are sequentially connected from small to large in diameter, insertion grooves (141) are formed in the front ends of the second cutting part (14) and the third cutting part (15), inner walls of two sides corresponding to the straight grooves (12) of the insertion grooves (141) are in a plane structure which are parallel to each other, positioning holes (1411) are formed in two sides of the insertion grooves (141), two insertion blocks (142) located on two sides of the straight grooves (12) are symmetrical, the first cutting part (13) and the second cutting part (14) are respectively provided with an insertion block (142), and two insertion blocks (142) which are matched with each other insertion blocks (142) are arranged along the axial direction, the positions of the inserting and embedding holes (1421) correspond to the positions of the positioning holes (1411), when the positioning holes (1411) correspond to the positions of one inserting and embedding hole (1421) close to the first cutting part (13), the inserting and embedding block (142) is completely embedded into the inserting and embedding groove (141), positioning pins (143) penetrate through the inserting and embedding hole (1421) and the positioning holes (1411), and two ends of each positioning pin (143) are flush with the side walls of the two straight grooves (12);
a connecting rod (16) is arranged in the center of the rear end of the drill body (1), the drill bit is connected with the drill handle (2) through the connecting rod (16), a limiting part (162) and a threaded connection part (161) are sequentially arranged at one end of the connecting rod (16), the limiting part (162) is located at one end close to the drill body (1), the longitudinal section of the limiting part (162) is of a polygonal structure, the longitudinal section of the threaded connection part (161) is circular, and threads are arranged on the side wall of the threaded connection part (161); storage tank (21) have been seted up at drillstock (2) inner chamber center, storage tank (21) longitudinal section is polygonized structure, and spacing mouthful (211) have been seted up at the one end center of storage tank (21), the size shape of spacing mouthful (211) with spacing portion (162) size shape looks adaptation, be equipped with adapter sleeve (212) and spring (213) in storage tank (21), adapter sleeve (212) lateral wall and storage tank (21) inner wall laminating set up, be equipped with the screw thread on adapter sleeve (212) inside wall and with threaded connection portion (161) looks adaptation, spring (213) are located the one end that is close to spacing mouthful (211), and spring (213) one end supports to press on storage tank (21) one end inner wall, and the other end supports to press in the one end of adapter sleeve (212) for adapter sleeve (212) supports and leans on storage tank (21) other end inner wall, through adapter sleeve (212) and threaded connection portion (161) threaded connection to make spacing portion (162) cooperate with spacing mouthful (211), realize the detachable connection between drillstock (2) and drillstock (1).
2. The high-strength combined type drill structure as claimed in claim 1, wherein an internal thread (1422) is provided on an inner wall of the insertion hole (1421), and an external thread (1431) matched with the internal thread (1422) of the insertion hole (1421) is provided at a middle portion of the positioning pin (143), so that the positioning pin (143) is positioned by connecting the middle portion of the positioning pin (143) with the internal thread of the insertion hole (1421).
3. A high-strength combined drill structure according to claim 2, wherein both ends of the positioning pin (143) are provided with an adjusting groove (1432) for screwing.
4. A high strength composite drill bit structure as claimed in claim 1, wherein the size of the insert groove (141) of the second cutting portion (14) is smaller than the size of the insert groove (141) of the third cutting portion (15).
5. The combined drill bit structure with high strength as claimed in claim 1, wherein the cross section of the insert block (142) is Z-shaped, and two ends of the insert block (142) are arranged in a cambered surface structure.
6. A high-strength composite drill structure according to claim 1, wherein the length dimension of the threaded connection portion (161) is not less than the length dimension of the accommodation groove (21).
7. The combined drill structure with high strength according to claim 6, wherein the holding groove (214) is provided with a circular structure at the center of the inner wall at one end of the holding groove (21), and the holding groove (214) is matched with the front end of the threaded connection portion (161) for positioning.
8. A high-strength combined type drill structure as claimed in claim 1, wherein the screw-thread connecting portion (161) is screw-connected with one end of the inner wall of the connecting sleeve (212) when the limiting portion (162) abuts against one end of the limiting opening (211) of the drill shank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111290305.7A CN114083027B (en) | 2021-11-02 | 2021-11-02 | High-strength combined drill bit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111290305.7A CN114083027B (en) | 2021-11-02 | 2021-11-02 | High-strength combined drill bit structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114083027A CN114083027A (en) | 2022-02-25 |
| CN114083027B true CN114083027B (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111290305.7A Active CN114083027B (en) | 2021-11-02 | 2021-11-02 | High-strength combined drill bit structure |
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| CN (1) | CN114083027B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797711A (en) * | 1995-02-17 | 1998-08-25 | W. A. Deutsher Pty. Ltd. | Attaching sheet material to a support |
| CN204018807U (en) * | 2014-07-18 | 2014-12-17 | 江苏天工工具有限公司 | A kind of left-handed reamer |
| CN104832103A (en) * | 2015-05-19 | 2015-08-12 | 中国水利水电第十工程局有限公司 | Progressive drilling-in type multi-drill-bit cutting and drilling device |
| CN110681892A (en) * | 2019-11-07 | 2020-01-14 | 丹阳市杰锐特种工具制造有限公司 | Cup joint formula pagoda bores |
| CN210677058U (en) * | 2019-07-11 | 2020-06-05 | 东莞柯乐美精密工具有限公司 | Multistage grading drill bit |
| CN213469700U (en) * | 2020-10-29 | 2021-06-18 | 江苏超微特工具科技有限公司 | Modular drill bit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8622666B2 (en) * | 2009-08-11 | 2014-01-07 | Combined Producers Co. #1 Inc. | Adjustable step drill bit |
| CN209830377U (en) * | 2019-03-26 | 2019-12-24 | 丹阳市丹鹰工具制造有限公司 | Wire clamping drill |
-
2021
- 2021-11-02 CN CN202111290305.7A patent/CN114083027B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5797711A (en) * | 1995-02-17 | 1998-08-25 | W. A. Deutsher Pty. Ltd. | Attaching sheet material to a support |
| CN204018807U (en) * | 2014-07-18 | 2014-12-17 | 江苏天工工具有限公司 | A kind of left-handed reamer |
| CN104832103A (en) * | 2015-05-19 | 2015-08-12 | 中国水利水电第十工程局有限公司 | Progressive drilling-in type multi-drill-bit cutting and drilling device |
| CN210677058U (en) * | 2019-07-11 | 2020-06-05 | 东莞柯乐美精密工具有限公司 | Multistage grading drill bit |
| CN110681892A (en) * | 2019-11-07 | 2020-01-14 | 丹阳市杰锐特种工具制造有限公司 | Cup joint formula pagoda bores |
| CN213469700U (en) * | 2020-10-29 | 2021-06-18 | 江苏超微特工具科技有限公司 | Modular drill bit |
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| Publication number | Publication date |
|---|---|
| CN114083027A (en) | 2022-02-25 |
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