CN220705621U - Hierarchical type combined drill bit - Google Patents
Hierarchical type combined drill bit Download PDFInfo
- Publication number
- CN220705621U CN220705621U CN202322432791.2U CN202322432791U CN220705621U CN 220705621 U CN220705621 U CN 220705621U CN 202322432791 U CN202322432791 U CN 202322432791U CN 220705621 U CN220705621 U CN 220705621U
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- China
- Prior art keywords
- drill bit
- conical
- hole
- round platform
- conical sleeve
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Links
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The utility model discloses a grading combined drill bit, which comprises a first drill bit and a second drill bit, wherein a cone-shaped drill bit is arranged between the first drill bit and the second drill bit; a conical sleeve is arranged in the conical drill bit in a penetrating way, and the conical sleeve is arranged in the second drill bit in a penetrating way; one end of the first drill bit, which is close to the second drill bit, is coaxially provided with a conical rod, and the conical rod penetrates through the conical sleeve; the second drill bit is provided with a locking mechanism, the locking mechanism is used for limiting and fixing the conical sleeve and the conical rod, a first round platform hole is coaxially formed in the second drill bit, and the first round platform hole penetrates through two ends of the second drill bit; the first round platform hole is matched with the conical sleeve, and the conical sleeve penetrates through the first round platform hole; the utility model has stable combination and convenient disassembly and assembly.
Description
Technical Field
The utility model relates to the technical field of drill bits, in particular to a hierarchical combined drill bit.
Background
The drill bit is a tool for drilling holes, and various kinds of drill bits include twist drills, flat drills, deep drills, reamers, core drills, and the like. Because a single drill bit can only perform single drilling work, a combined drill bit can be adopted to meet various use requirements; in the process of using and replacing the combined drill bit, the stability of the installation connection and the convenience of the disassembly of each level of drill bit are required to be considered.
Disclosure of Invention
The present utility model is directed to a hierarchical combination drill bit, which solves the above-mentioned problems.
In order to solve the technical problems, the utility model provides the following technical scheme: the grading type combined drill bit comprises a first drill bit and a second drill bit, wherein a cone-shaped drill bit is arranged between the first drill bit and the second drill bit;
a conical sleeve is arranged in the conical drill bit in a penetrating way, and the conical sleeve is arranged in the second drill bit in a penetrating way;
one end of the first drill bit, which is close to the second drill bit, is coaxially provided with a conical rod, and the conical rod penetrates through the conical sleeve;
the second drill bit is provided with a locking mechanism, and the locking mechanism is used for limiting and fixing the conical sleeve and the conical rod.
Further, a first round platform hole is coaxially formed in the second drill bit, and the first round platform hole penetrates through two ends of the second drill bit;
the first round platform hole is matched with the conical sleeve, and the conical sleeve penetrates through the first round platform hole.
Further, the second round platform hole is coaxially arranged in the conical sleeve, the second round platform hole is matched with the conical rod, and the conical rod penetrates through the second round platform hole.
Further, the inside of cone drill bit is coaxial to be provided with the third round platform hole, the inside of third round platform hole is worn to establish by cone sleeve's small diameter end.
Further, the locking mechanism includes a locking screw; the tapered sleeve is provided with a first limiting hole, the tapered rod is provided with a second limiting hole, the locking screw penetrates through the first limiting hole and the second limiting hole, and the locking screw is connected with the second drill bit through threaded fit.
Further, the large end of the conical sleeve is coaxially provided with a connecting shaft.
Compared with the prior art, the utility model has the following beneficial effects:
the conical sleeve is matched with the inside of the first round platform hole, so that the contact effect between the conical sleeve and the first round platform hole is improved; meanwhile, the outer wall of the conical sleeve is contacted with the inner wall of the third round table hole, the conical rod is in penetrating fit in the second round table hole, and the contact effect between the conical rod and the second round table hole is improved, so that the installation limit stability of the first drill bit, the conical drill bit and the second drill bit is improved; in addition, through unscrewing locking screw, be convenient for the quick dismantlement of first drill bit, cone drill bit and second drill bit.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is an exploded view of the overall structure of the present utility model;
FIG. 3 is a schematic view of the overall cross-sectional structure of the present utility model;
FIG. 4 is a schematic view of the cone drill bit of the present utility model;
FIG. 5 is a schematic view of the structure of a second drill bit of the present utility model;
in the figure: 1. a first drill bit; 2. a cone drill bit; 21. a third round table hole; 3. a second drill bit; 31. a first round table hole; 4. a locking mechanism; 41. a locking screw; 5. a connecting shaft; 6. a conical sleeve; 61. a first limiting hole; 62. a second round table hole; 7. a taper rod; 71. and the second limiting hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides the following technical solutions: the utility model provides a hierarchical combination drill bit, includes first drill bit 1 and second drill bit 3, and the drilling diameter of first drill bit 1 during operation is less than the drilling diameter of second drill bit 3 during operation, is provided with cone drill bit 2 between first drill bit 1 and second drill bit 3, and cone drill bit 2 can play the transition effect, and cone drill bit's both ends just contact with the adjacent one end of first drill bit 1 and second drill bit 3 respectively; the first drill 1, the taper drill 2, and the second drill 3 are coaxially disposed.
The second drill bit 3 is provided with a locking mechanism 4, and the locking mechanism 4 is used for limiting and fixing the conical sleeve 6 and the conical rod 7.
The inside of the second drill bit 3 is coaxially provided with a first round platform hole 31, the first round platform hole 31 penetrates through two ends of the second drill bit 3, the inside of the cone-shaped drill bit 2 is coaxially provided with a third round platform hole 21, the taper of the third round platform hole 21 is consistent with that of the first round platform hole 31, and the inner diameters of the adjacent ends of the first round platform hole 31 and the third round platform hole 21 are equal; the first round bench hole 31 and the third round bench hole 21 are internally provided with an adaptive conical sleeve 6 in a penetrating mode, the small-diameter end of the conical sleeve 6 just penetrates through the third round bench hole 21 and is fixed in the third round bench hole 21, and other parts of the conical sleeve 6 penetrate through the first round bench hole 31.
The conical sleeve 6 is matched inside the first round platform hole 31, so that the conical sleeve 6 is placed and limited, and as the inner wall of the first round platform hole 31 and the outer wall of the conical sleeve 6 are inclined circumferential surfaces, the contact effect between the conical sleeve 6 and the first round platform hole 31 is improved, and the limiting stability of the conical sleeve 6 is improved; meanwhile, the outer wall of the conical sleeve 6 is in contact with the inner wall of the third round table hole 21, so that the installation limit stability of the conical drill bit 2 is improved.
One end of the first drill bit 1, which is close to the second drill bit 3, is coaxially provided with a conical rod 7, and the conical rod 7 is penetrated into the conical sleeve 6; specifically, the second round hole 62 is coaxially arranged in the conical sleeve 6, the second round hole 62 penetrates through one end, close to the first drill bit 1, of the conical sleeve 6, the second round hole 62 is matched with the conical rod 7, and the conical rod 7 is in penetrating fit inside the second round hole 62.
Through the cooperation of penetrating and setting up of taper pole 7 in second round platform hole 62, utilize taper pole 7 outer wall and the contact of second round platform hole 62 inner wall, increase the contact effect between taper pole 7 and the second round platform hole 62, promote the spacing steadiness of taper pole 7 to promote the spacing steadiness of first drill bit 1 installation.
The part of the conical sleeve 6 near the large end of the conical sleeve is provided with a first limiting hole 61, and the first limiting hole 61 penetrates through a second round platform hole 62 in the conical sleeve 6; the taper rod 7 is provided with a second limiting hole 71, and the diameters of the first limiting hole 61 and the second limiting hole 71 are equal and the positions of the first limiting hole and the second limiting hole are corresponding.
The locking mechanism 4 comprises a locking screw 41, the locking screw 41 is penetrated inside the first limiting hole 61 and the second limiting hole 71, and the locking screw 41 is connected with the second drill bit 3 through threaded fit; specifically, the second drill bit 3 is provided with a threaded hole adapted to the locking screw 41; the locking screw 41 is arranged in the first limiting hole 61 and the second limiting hole 71 in a penetrating way, namely, the locking screw 41 is arranged on the conical sleeve 6 and the conical rod 7 in a penetrating way, so that the limiting of the conical sleeve 6 and the conical rod 7 is realized, and the conical sleeve 6 is connected with the conical drill bit 2, the conical rod 7 is connected with the first drill bit 1, so that the first drill bit 1 and the conical drill bit 2 are arranged on the second drill bit 3; the locking screw 41 can be screwed out, so that the first drill bit 1 and the cone drill bit 2 can be detachably arranged.
The large end of the conical sleeve 6 is coaxially provided with a connecting shaft 5, and the connecting shaft 5 is used for being connected with an external rotary driving mechanism so as to drive the whole drill bit to rotate.
When the first drill bit 1, the cone drill bit 2 and the second drill bit 3 are combined and spliced, a hole with smaller hole diameter can be drilled in advance through the first drill bit 1, and then reaming with a certain depth is carried out through the cone drill bit 2, so that a straight hole and cone hole structure can be formed; when the integral drill bit is continuously fed, two straight hole structures with different apertures can be conveniently formed, and the two straight holes are transited through the conical holes, so that different use requirements can be met.
After the locking screw 41 is screwed out, the first drill bit 1 is moved in the direction away from the conical drill bit 2, so that the conical rod 7 is completely separated from the inside of the second round table hole 62, the first drill bit 1 can be quickly disassembled and separated, then the locking screw 41 is penetrated into the first limiting hole 61, the locking screw 41 is connected to the second drill bit 3, and at the moment, only the conical drill bit 2 and the second drill bit 3 are left, and at the moment, different use requirements, such as reaming operation, can be met.
By unscrewing the locking screw 41, the taper rod 7 is separated from the second round table hole 62, the taper sleeve 6 and the connecting shaft 5 are separated from the second drill bit 3, and the first drill bit 1, the taper drill bit 2 and the second drill bit 3 can be quickly disassembled.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. A hierarchical combination drill bit, characterized in that:
the drilling device comprises a first drill bit (1) and a second drill bit (3), wherein a cone-shaped drill bit (2) is arranged between the first drill bit (1) and the second drill bit (3);
a conical sleeve (6) is arranged in the conical drill bit (2) in a penetrating mode, and the conical sleeve (6) is arranged in the second drill bit (3) in a penetrating mode;
one end of the first drill bit (1) close to the second drill bit (3) is coaxially provided with a conical rod (7), and the conical rod (7) is arranged in the conical sleeve (6) in a penetrating mode;
the second drill bit (3) is provided with a locking mechanism (4), and the locking mechanism (4) is used for limiting and fixing the conical sleeve (6) and the conical rod (7).
2. A stepped combination drill bit according to claim 1, wherein: a first round table hole (31) is coaxially formed in the second drill bit (3), and the first round table hole (31) penetrates through two ends of the second drill bit (3);
the first round platform hole (31) is matched with the conical sleeve (6), and the conical sleeve (6) penetrates through the first round platform hole (31).
3. A stepped combination drill bit according to claim 1, wherein: the conical sleeve (6) is internally and coaxially provided with a second round platform hole (62), the second round platform hole (62) is matched with the conical rod (7), and the conical rod (7) is penetrated into the second round platform hole (62).
4. A stepped combination drill bit according to claim 1, wherein: the inside of cone drill bit (2) is coaxial to be provided with third round platform hole (21), the path end of toper sleeve (6) wears to establish inside third round platform hole (21).
5. A stepped combination drill bit according to claim 1, wherein: the locking mechanism (4) comprises a locking screw (41); be provided with first spacing hole (61) on toper sleeve (6), be provided with second spacing hole (71) on toper pole (7), locking screw (41) wear to establish first spacing hole (61) with inside second spacing hole (71), just locking screw (41) are connected through screw-thread fit with second drill bit (3).
6. A stepped combination drill bit according to claim 1, wherein: the large end of the conical sleeve (6) is coaxially provided with a connecting shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322432791.2U CN220705621U (en) | 2023-09-07 | 2023-09-07 | Hierarchical type combined drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322432791.2U CN220705621U (en) | 2023-09-07 | 2023-09-07 | Hierarchical type combined drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220705621U true CN220705621U (en) | 2024-04-02 |
Family
ID=90445523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322432791.2U Active CN220705621U (en) | 2023-09-07 | 2023-09-07 | Hierarchical type combined drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220705621U (en) |
-
2023
- 2023-09-07 CN CN202322432791.2U patent/CN220705621U/en active Active
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