CN211094471U - Composite drill - Google Patents
Composite drill Download PDFInfo
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- CN211094471U CN211094471U CN201921512195.2U CN201921512195U CN211094471U CN 211094471 U CN211094471 U CN 211094471U CN 201921512195 U CN201921512195 U CN 201921512195U CN 211094471 U CN211094471 U CN 211094471U
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- stage drill
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Abstract
The utility model provides a composite drill, which comprises a shell, a first-stage drill bit, a second-stage drill bit, a first locking component and a second locking component; the first-stage drill bit, the second-stage drill bit and the shell are coaxially arranged in sequence from inside to outside, and the first-stage drill bit is axially adjustable in the second-stage drill bit and is relatively fixed with the second-stage drill bit through a first locking assembly; the second stage drill bit is axially adjustable within the housing and is relatively fixed to the housing by a second locking assembly. The two-stage drill bit capable of being adjusted along the axial direction is adopted, the drilling depth and the depth of the stepped hole can be adjusted at will, the adjustment of various depth sizes of the single hole/the stepped hole can be completed through one composite drill, the drill bit does not need to be replaced, and the operation time is shortened.
Description
Technical Field
The utility model relates to a composite drill.
Background
An orthopedic drill is often used for drilling holes in orthopedic surgery, but the existing orthopedic drill can only realize a common circular hole and cannot meet the requirement of forming a stepped hole in a bone. In addition, the existing orthopedic drill bit cannot limit the drilling depth, and a doctor needs to use other equipment for real-time monitoring in the operation process. This will place higher demands on the surgeon's operation and increase the risks involved in the operation, prolonging the operation time.
In the machinery trade, the processing of shoulder hole can be realized to traditional ladder brill, nevertheless because one-level brill and second grade drill bit are integrated into one piece, have the fixed unable defect of adjusting of shoulder hole degree of depth. In the orthopedic surgery, the doctor often needs to adjust the depth of the stepped hole according to the actual condition of each patient. Obviously, the traditional stepped drill with fixed stepped depth cannot meet the requirements of the bone surgery.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one technical problem that above-mentioned prior art exists, the utility model provides a composite drill, simple structure, easy to operate during the installation forms degree of depth adjustable shoulder hole or carries on spacingly to the brill depth of main drill bit on the skeleton that can be accurate.
The utility model provides a composite drill, which comprises a shell, a first-stage drill bit, a second-stage drill bit, a first locking component and a second locking component;
the first-stage drill bit, the second-stage drill bit and the shell are coaxially arranged in sequence from inside to outside, and the first-stage drill bit is axially adjustable in the second-stage drill bit and is relatively fixed with the second-stage drill bit through a first locking assembly; the second stage drill bit is axially adjustable within the housing and is relatively fixed to the housing by a second locking assembly.
The utility model has the advantages that: the two-stage drill bit capable of being adjusted along the axial direction is adopted, the drilling depth and the depth of the stepped hole can be adjusted at will, the adjustment of various depth sizes of the single hole/the stepped hole can be completed through one composite drill, the drill bit does not need to be replaced, and the operation time is shortened.
Preferably, a cavity with a step surface is formed in the second-stage drill bit, and a step matched with the step surface is arranged at one end, matched with the second-stage drill bit, of the first-stage drill bit.
The beneficial effect of adopting the further scheme is that: through the cooperation of step and step face, can carry on spacingly to first order drill bit, break away from in the first order drill bit from the second level drill bit during the prevention adjustment.
Preferably, the first-stage drill bit comprises a main drill bit and an adjusting rod fixedly connected with the main drill bit, a first-stage external thread is arranged at the matching position of the adjusting rod and the second-stage drill bit, and a first-stage internal thread matched with the first-stage external thread is arranged inside the second-stage drill bit.
The beneficial effect of adopting the further scheme is that: the distance that the first-stage drill bit extends out of the second-stage drill bit is adjusted in a threaded mode.
Preferably, the first locking assembly is a first locking nut, the first locking nut is coaxially arranged on the adjusting rod and is in rotating fit with the first-stage external thread, and one side end face of the first locking nut is closely attached to one end face, far away from the main drill, of the second-stage drill.
The beneficial effect of adopting the further scheme is that: the distance that the first-stage drill bit stretches out of the second-stage drill bit can be limited and fixed by the locking nut.
Preferably, the second level drill bit include secondary drill bit and with the regulation portion that secondary drill bit is connected, the regulation portion outside is equipped with the second level external screw thread, dispose in the shell with the second level internal thread of second level external screw thread complex.
The beneficial effect of adopting the further scheme is that: the distance of the second-stage drill bit extending out of the shell is adjusted in a threaded mode.
Preferably, the second locking assembly is a second locking nut, the second locking nut is coaxially arranged outside the adjusting part and in rotary fit with the second-stage external thread, and one end face of the second locking nut is closely attached to the end face of the shell, which is far away from the secondary drill bit.
The beneficial effect of adopting the further scheme is that: the distance that the second-stage drill bit stretches out of the shell can be limited and fixed by the locking nut.
Preferably, the first locking component is a first locking screw, a waist hole matched with the first locking screw is formed in the shell, the waist hole is formed in the axis direction, a first threaded hole matched with the first locking screw is formed in the second-stage drill bit, and the first locking screw sequentially penetrates through the waist hole and the first threaded hole and abuts against the outer surface of the first-stage drill bit.
The beneficial effect of adopting the further scheme is that: another way of adjusting the distance of the first-stage drill bit extending out of the second-stage drill bit and limiting and fixing is provided.
Preferably, the second locking assembly is a second locking screw, a second threaded hole matched with the second locking screw is formed in the shell, and the first locking screw penetrates through the second threaded hole and abuts against the outer surface of the second-stage drill.
The beneficial effect of adopting the further scheme is that: another way of adjusting the distance of the second-stage drill bit extending out of the shell and limiting and fixing is provided.
Preferably, the first-stage drill bit is provided with first scale marks, and the first scale marks are distributed on the surface of the first-stage drill bit along the axis direction.
The beneficial effect of adopting the further scheme is that: the distance from the first-stage drill bit to the second-stage drill bit can be quantitatively controlled through the scale marks.
Preferably, the second-stage drill bit is provided with second scale marks, and the second scale marks are distributed on the surface of the second-stage drill bit along the axial direction.
The beneficial effect of adopting the further scheme is that: the distance of the second-stage drill bit extending out of the shell can be quantitatively controlled through the scale marks.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of an embodiment 1 of a composite drill provided by the present invention;
fig. 2 is a schematic cross-sectional view of an embodiment 1 of a composite drill according to the present invention;
fig. 3 is a schematic view of an embodiment 2 of a composite drill according to the present invention;
fig. 4 is a schematic side view of an embodiment 2 of a composite drill according to the present invention;
fig. 5 is a schematic cross-sectional view of an embodiment 2 of a composite drill according to the present invention.
The reference numbers illustrate:
1. a housing; 1.1, waist holes; 2. a first stage drill bit; 2.1, a main drill bit; 2.2, adjusting a rod; 2.3, a first lens; 3. a second stage drill bit; 3.1, a secondary drill bit; 3.2, an adjusting part; 4.1, a first locking assembly; 4.2 and a second locking assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed when in use, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-2, the utility model provides a composite drill, which comprises a shell 1, a first-stage drill bit 2, a second-stage drill bit 3, a first locking component 4.1 and a second locking component 4.2;
the first-stage drill bit 2, the second-stage drill bit 3 and the shell 1 are coaxially arranged in sequence from inside to outside, and the first-stage drill bit 2 is axially adjustable inside the second-stage drill bit 3 and is relatively fixed with the second-stage drill bit 3 through a first locking assembly 4.1; the second stage drill bit 3 is axially adjustable within the housing 1 and is fixed relative to the housing 1 by a second locking assembly 4.2.
The inside cavity that has the step face that is equipped with of second level drill bit 3, first level drill bit 2 with the 3 complex one end of second level drill bit dispose with step face matched with step, through the cooperation of step and step face, can carry on spacingly to first level drill bit 2, the first level drill bit 2 breaks away from in the second level drill bit 3 during the prevention adjustment.
First order drill bit 2 include main drill bit 2.1 and with main drill bit 2.1 fixed connection's regulation pole 2.2, adjust pole 2.2 with 3 cooperation departments of second order drill bit dispose first order external screw threads, 3 inside disposes of second order drill bit with 2 complex first order internal threads of first order external screw threads. The distance by which the main drill bit 2.1 protrudes from the secondary drill bit 3 is adjusted by means of a thread.
First locking component 4.1 is first lock nut, first lock nut is coaxial to be set up adjust on the pole 2.2 and with first order external screw thread normal running fit, a side end face of first lock nut with the second order drill bit 3 keeps away from the one end terminal surface of main drill bit 2.1 and closely laminates. The distance that the first-stage drill bit 2 extends out of the second-stage drill bit 3 can be limited and fixed by using the locking nut. The first-stage drill bit 2 is provided with first scale marks, preferably, the first scale marks are distributed on the surface of the adjusting rod 2.2 along the axis direction.
When the drill bit is used, according to the actual requirement of the distance L between the main drill bit 2.1 and the second-stage drill bit 3, the first locking nut is rotated to the position aligned with the corresponding first scale mark, then the position of the first locking nut is kept unchanged, and the second-stage drill bit 3 is rotated until the end surface of the second-stage drill bit is fastened with the first locking nut, so that the distance between the main drill bit 2.1 and the second-stage drill bit 3 is a required value.
Second level drill bit 3 including secondary drill bit 3.1 and with the regulation portion 3.2 that secondary drill bit 3.1 is connected, the regulation portion 3.2 outside is equipped with the second level external screw thread, dispose in the shell 1 with second level external screw thread complex second level internal thread. The distance of the second-stage drill bit 3 extending out of the housing 1 is adjusted by means of a screw thread.
Second locking Assembly 4.2 is second lock nut, second lock nut is coaxial to be set up regulation portion 3.2 outside and with second level external screw thread normal running fit, a lateral surface of second lock nut with shell 1 keeps away from the one end terminal surface of secondary drill bit 3.1 and closely laminates. The distance that the second-stage drill bit 3 extends out of the shell 1 can be limited and fixed by using the locking nut. The second-stage drill 3 is provided with second scale marks (not shown in the figure), and the second scale marks are distributed on the surface of the adjusting part 3.2 of the second-stage drill 3 along the axial direction.
When the stepped drilling depth of the stepped hole needs to be limited, the second locking nut can be adjusted to be screwed and rotated to a position aligned with the corresponding second scale mark, then the position of the second locking nut is kept unchanged, and the shell 1 is rotated until the end face of the shell is tightly combined with the second locking nut, so that the drilling depth can be controlled.
The utility model discloses a two-stage drill bit with adjustable along the axial can adjust drilling depth, the degree of depth of shoulder hole wantonly, and through a compound brill, can accomplish the regulation of the various depth dimension in haplopore step hole, need not to change the drill bit, reduces the activity duration.
Example 2
As shown in fig. 3 to 5, the present embodiment is different from embodiment 1 in that the first locking component 4.1 is a first locking screw, a waist hole 1.1 matched with the first locking screw is formed in the housing 1, the waist hole 1.1 is arranged along an axial direction, and a width of the waist hole 1.1 is smaller than a diameter of an end face of the first locking screw. The second-stage drill bit 3 is provided with a first threaded hole matched with the first locking screw, and the first locking screw sequentially penetrates through the waist hole 1.1 and the first threaded hole and is tightly abutted to the outer surface of the first-stage drill bit 2.
The second locking component 4.2 is a second locking screw, a second threaded hole matched with the second locking screw is formed in the shell 1, and the first locking screw penetrates through the second threaded hole and is tightly abutted to the outer surface of the second-stage drill bit 3.
The main drill bit 2.1 is provided with a step, when the drill bit is used, the first locking screw is screwed after the depth of the step is adjusted, and the second-stage drill bit 3 is locked on the main drill bit 2.1 through friction force between the bottom of the screw and the surface of the adjusting rod 2.2. When the drilling depth is required to be limited, the second locking screw is screwed down, and the drilling depth is controlled. The length of the first-stage drill bit 2 and the second-stage drill bit 3 extending in the current state can be known through the first/second scale marks.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A composite drill is characterized by comprising a shell (1), a first-stage drill bit (2), a second-stage drill bit (3), a first locking component (4.1) and a second locking component (4.2);
the first-stage drill bit (2), the second-stage drill bit (3) and the shell (1) are coaxially arranged in sequence from inside to outside, and the first-stage drill bit (2) is axially adjustable inside the second-stage drill bit (3) and is relatively fixed with the second-stage drill bit (3) through a first locking assembly (4.1); the second-stage drill bit (3) is axially adjustable in the housing (1) and is fixed relative to the housing (1) by a second locking assembly (4.2).
2. A composite drill according to claim 1, characterized in that the second stage drill bit (3) is provided with a cavity having a step surface therein, and the end of the first stage drill bit (2) that is engaged with the second stage drill bit (3) is provided with a step that is engaged with the step surface.
3. A composite drill according to claim 1 or 2, characterized in that the first stage drill (2) comprises a main drill (2.1) and an adjusting rod (2.2) fixedly connected with the main drill (2.1), a first stage external thread is arranged at the matching position of the adjusting rod (2.2) and the second stage drill (3), and a first stage internal thread matched with the first stage external thread is arranged inside the second stage drill (3).
4. A composite drill according to claim 3, characterized in that the first locking assembly (4.1) is a first locking nut coaxially arranged on the adjusting rod (2.2) and rotationally engaged with the first-stage external thread, and a side end face of the first locking nut is closely attached to an end face of the second-stage drill bit (3) far away from the main drill bit (2.1).
5. A composite drill according to claim 1, characterized in that the second stage drill bit (3) comprises a secondary drill bit (3.1) and an adjusting part (3.2) connected with the secondary drill bit (3.1), the adjusting part (3.2) is externally provided with a second stage external thread, and the housing (1) is internally provided with a second stage internal thread matched with the second stage external thread.
6. A composite drill according to claim 5, characterized in that the second locking assembly (4.2) is a second locking nut which is coaxially arranged outside the adjustment portion (3.2) and is in rotational fit with the second-stage external thread, and an end face of the second locking nut is in close abutment with an end face of the housing (1) remote from the secondary drill bit (3.1).
7. The composite drill according to claim 1 or 2, wherein the first locking component (4.1) is a first locking screw, a waist hole (1.1) matched with the first locking screw is formed in the outer shell (1), the waist hole (1.1) is arranged along the axial direction, a first threaded hole matched with the first locking screw is formed in the second-stage drill bit (3), and the first locking screw sequentially penetrates through the waist hole (1.1) and the first threaded hole and abuts against the outer surface of the first-stage drill bit (2).
8. A composite drill according to claim 7, characterized in that the second locking member (4.2) is a second locking screw, and the housing (1) is provided with a second threaded hole for engagement with the second locking screw, and the first locking screw passes through the second threaded hole and abuts against the outer surface of the second stage drill bit (3).
9. A composite drill according to claim 1, characterized in that the first stage drill bit (2) is provided with first graduation marks distributed along the axial direction on the surface of the first stage drill bit.
10. A composite drill according to claim 1 or 9, characterized in that the second stage drill bit (3) is provided with second graduation marks which are distributed axially over the surface of the second stage drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512195.2U CN211094471U (en) | 2019-09-11 | 2019-09-11 | Composite drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921512195.2U CN211094471U (en) | 2019-09-11 | 2019-09-11 | Composite drill |
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| Publication Number | Publication Date |
|---|---|
| CN211094471U true CN211094471U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921512195.2U Active CN211094471U (en) | 2019-09-11 | 2019-09-11 | Composite drill |
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| CN (1) | CN211094471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589161A (en) * | 2020-11-10 | 2021-04-02 | 安徽机电职业技术学院 | Drilling device and method for machining counter bore |
-
2019
- 2019-09-11 CN CN201921512195.2U patent/CN211094471U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589161A (en) * | 2020-11-10 | 2021-04-02 | 安徽机电职业技术学院 | Drilling device and method for machining counter bore |
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