CN210541876U - Tool and drilling machine - Google Patents
Tool and drilling machine Download PDFInfo
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- CN210541876U CN210541876U CN201920738953.6U CN201920738953U CN210541876U CN 210541876 U CN210541876 U CN 210541876U CN 201920738953 U CN201920738953 U CN 201920738953U CN 210541876 U CN210541876 U CN 210541876U
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Abstract
The utility model discloses a cutter and a drilling machine, wherein, the cutter is applied to medical appliances, the cutter comprises a cutter handle, a cutter body and a drill bit, one end of the cutter body is connected with the cutter handle, the other end is connected with the drill bit, the drill bit comprises a drilling part and a second tip part, one end of the drilling part is connected with the other end of the cutter body, and the other end of the drilling part is provided with a first tip part; the second tip portion is connected to the first tip portion, and the sharp angle of the second tip portion is smaller than that of the first tip portion. The utility model discloses technical scheme has the second pointed end portion through the end connection at first pointed end portion, and the closed angle of second pointed end portion is less than the closed angle of first pointed end portion, then the second pointed end portion plays the effect of centering, and first pointed end portion is used for drilling, the utility model provides a drill bit has assembled the dual function of centering and drilling.
Description
Technical Field
The utility model relates to a medical treatment cutter technical field, in particular to cutter and drilling machine of using this cutter.
Background
At present, in the process of dental implant surgery, a doctor needs to drill a hole by using a pioneer drill, and in order to ensure the strength of a drill bit during drilling, the angle of a sharp corner of the pioneer drill is generally large, so that the centering performance of the pioneer drill is insufficient, and therefore the doctor usually needs to pre-position the pioneer drill by using the centering drill and drill the hole in a pre-positioning hole drilled by the centering drill to prevent the deviation of the drill hole of the pioneer drill. Thus, the doctor needs to use two drills one after the other to complete the operation, thereby increasing the time and times for changing the drills and increasing the use cost of the tool.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cutter is applied to medical instrument, aims at improving the not enough problem of pioneer drill bit centering nature.
In order to achieve the above object, the utility model provides a cutter, be applied to medical instrument, including handle of a knife, blade and drill bit, blade one end is connected the handle of a knife, and the other end is connected the drill bit, the drill bit includes drilling portion and second pointed end, drilling portion one end is connected with the other end of blade, the other end of drilling portion is formed with first pointed end; the second tip portion is connected to the first tip portion, and the sharp angle of the second tip portion is smaller than that of the first tip portion.
optionally, the angle of the sharp angle of the second tip portion is α, 60 ≦ α ≦ 90 °.
Optionally, the angle of the sharp angle of the first tip portion is γ, 90 ≦ γ ≦ 120.
Optionally, the second tip part is provided with a chisel edge, the width of the chisel edge is W, and W is more than or equal to 0.15mm and less than or equal to 0.40 mm.
optionally, the angle of the chisel edge bevel is beta, 40 DEG beta is less than or equal to 50 deg.
Optionally, the blade and the handle are of an integral structure.
Optionally, the blade body is of unitary construction with the drill bit.
Optionally, the blade body is provided with a plurality of spiral chip grooves.
The utility model also provides a drilling machine, including foretell cutter.
The utility model discloses technical scheme has the second pointed end portion through the end connection at first pointed end portion, and the closed angle of second pointed end portion is less than the closed angle of first pointed end portion, then the second pointed end portion plays the effect of centering, and first pointed end portion is used for drilling, the utility model discloses the drill bit among the well cutter has assembled the dual function of centering and drilling.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of the cutting tool of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the front structure of the cutting tool of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
fig. 5 is a top view of the cutting tool of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Knife |
200 | |
| 210 | |
300 | |
| 310 | |
311 | |
| 320 | |
321 | |
| 301 | Main cutting edge |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a cutter is applied to medical instrument.
In an embodiment of the present invention, please refer to fig. 1 and fig. 2 in combination, the cutting tool includes a tool holder 100, a tool body 200 and a drill 300, wherein one end of the tool body 200 is connected to the tool holder 100, the other end is connected to the drill 300, the drill 300 includes a drilling portion 310 and a second tip portion 320, one end of the drilling portion 310 is connected to the other end of the tool body 200, and the other end of the drilling portion 310 is formed with a first tip portion 311; the second tip portion 320 is connected to the first tip portion 311, and the second tip portion 320 has a smaller tip angle than the first tip portion 311.
The cutter can be used in the situation that drilling is performed after pre-positioning, for example, in the dental implant operation process, the second tip part 320 is connected to the first tip part 311 of the drilling part 310, and the sharp angle of the second tip part 320 is smaller than that of the first tip part 311, so that a doctor can hold the cutter handle 100 in the operation process, pre-position the second tip part 320 in the cutter, then drill through the drilling part 310, and further increase the drilling depth through the cutter body 200.
Specifically, the sharp angle of the drill 300 refers to the angle at which the drill 300 first contacts the object being drilled when in use. In general, the smaller the tip angle of the drill 300, the better the centering performance, but the more likely chipping occurs; the larger the tip angle of the drill 300, the stronger it is when drilling, but at the same time, the greater the resistance to drilling. The second pointed end 320 has a better centering effect and the first pointed end 311 has better drilling strength because the pointed angle of the second pointed end 320 is smaller than that of the first pointed end 311. In addition, the drill 300 and the cutter body 200 can be coaxially connected, that is, the axis of the drill 300 is coincident with the axis of the cutter body 200, so that the central axis of the drill 300 during drilling can be ensured to be consistent with the central axis of the cutter body 200 during drilling. In this embodiment, the blade body 200 and the drill 300 may be integrated, so as to ensure that the central axis during drilling can completely coincide with the central axis of hole machining during non-drilling. Of course, the blade 200 and the tool holder 100 are also coaxially connected, so as to avoid deviation in the drilling process. Specifically, the tool holder 100 and the tool body 200 may be cylinders.
The utility model discloses technical scheme has second pointed end 320 through the end connection at first pointed end 311, and the closed angle of second pointed end 320 is less than the closed angle of first pointed end 311, then second pointed end 320 plays the effect of centering, and first pointed end 311 is used for drilling, the utility model provides a drill bit 300 has assembled the dual function of centering and drilling.
referring to fig. 3 and 4 in combination, to achieve a better centering effect, the angle of the sharp corner of the second tip portion 320 is defined as α, 60 ° ≦ α ≦ 90 °, by setting the range of the angle α of the sharp corner of the second tip portion 320 to 60 ° ≦ α ≦ 90 °, for example α may be 60 °, 70 °, 80 °, or 90 °, etc., so that within this range, the sharp corner of the second tip portion 320 can achieve a better centering effect.
if the angle α of the pointed angle of the second pointed end 320 is less than 60 °, the second pointed end 320 is easily worn, thereby reducing the centering effect of the second pointed end 320, and if the angle α of the pointed angle of the second pointed end 320 is greater than 90 °, the angle of the pointed angle of the second pointed end 320 is too large, thereby making the centering of the second pointed end 320 poor.
With continued reference to FIGS. 3 and 4, the angle of the pointed tip portion 311 is γ, 90 ≦ γ ≦ 120, based on the concept that the pointed angle of the first tip portion 311 is greater than the pointed angle of the second tip portion 320. By setting the angle γ of the tip angle of the first tip portion 311 in the range of 90 ° ≦ γ ≦ 120 °, for example, γ may be 90 °, 100 °, 110 °, or 120 °, etc., so that in this range, the first tip portion 311 can secure a good drilling strength at the time of drilling.
If the angle γ of the tip angle of the first tip portion 311 is less than 90 °, the first tip portion 311 is easily worn, thereby reducing the drilling strength of the first tip portion 311. If the angle γ of the pointed corner of the first pointed end portion 311 is greater than 120 °, the angle of the pointed corner of the first pointed end portion 311 becomes excessively large, so that the drilling resistance of the first pointed end portion 311 at the time of drilling becomes large.
Referring to fig. 1, 2 and 5, it can be understood that, in the pilot drill, the chisel edge 321 is formed at the drill 300, in the embodiment, the second tip 320 has the chisel edge 321, the width of the chisel edge 321 is defined as W, and W is greater than or equal to 0.15mm and less than or equal to 0.40 mm.
Generally, the width of the chisel edge 321 determines the cutting resistance, and under the same condition, the larger the thickness of the chisel edge 321, the larger the cutting resistance, and the more likely the drill 300 drifts; the smaller the chisel edge 321, the smaller the cutting resistance, but the chisel edge 321 is easily worn. In the embodiment, the width W of the chisel edge 321 is set to be 0.15mm ≦ W ≦ 0.40mm, for example, W may be 0.15mm, 0.20mm, 0.25mm, 0.30mm, 0.35mm, or 0.40mm, so that when the chisel edge 321 is at the angle, on one hand, the strength of the second tip 320 can be ensured, and on the other hand, the axial force required for cutting can be reduced, thereby facilitating the axial feed cutting. If the width W of the chisel edge 321 is less than 0.15mm, the chisel edge 321 is easily worn, thereby reducing the centering effect of the second tip portion 320. If the width W of the chisel edge 321 is greater than 0.4mm, the width of the chisel edge 321 is too large, so that the drill 300 receives a large resistance during drilling, thereby reducing the cutting efficiency of the drill 300 and easily causing the drill 300 to be damaged by friction.
further, as shown in FIG. 5, the chisel edge bevel angle is defined as β, and is 40 ° ≦ β ≦ 50 °, which means the included angle between the chisel edge 321 and the projection of the main cutting edge 301 in the plane perpendicular to the axis of the drill 300. by setting the chisel edge bevel angle β in the range of 40 ° ≦ β ≦ 50 °, for example, β may be 40 °, 45 °, or 50 °, etc., the drill 300 is enabled to have both a good centering effect during drilling and a certain strength of the chisel edge 321.
Further, as shown in fig. 1 or fig. 3, the blade 200 and the tool holder 100 may be detachably connected, or may be an integral structure. It can be understood that, for a small-sized tool, the blade 200 may be integrally formed with the tool holder 100 so that the blade 200 and the tool holder 100 have an integral structure in consideration of manufacturing cost and mounting strength; for a medium-sized or large-sized tool, the tool body 200 and the tool holder 100 of the tool can be detachably connected, for example, by screw connection or snap connection, so that the worn parts can be replaced independently, and the replacement cost is reduced.
Of course, it is understood that the blade 200 and the drill 300 may be detachably connected, or may be integrally formed. It is understood that, for a small-sized cutter, the blade body 200 may be integrally formed with the drill 300 so that the blade body 200 and the drill 300 have an integral structure in consideration of manufacturing cost and mounting strength; for larger and medium tools, the tool body 200 and the drill 300 may be detachably connected, for example, by screws or snaps, in consideration of the replaceability. This facilitates individual replacement of worn parts, thereby reducing replacement costs.
Further, with continued reference to fig. 1 or 3, the blade 200 may be formed with a plurality of flutes 210, such that the drill 300 can discharge the scraps of the drilled object through the flutes 210 during the drilling process. Specifically, for small tools, the flutes 210 may be formed by milling or grinding; for larger tools, the flutes 210 may be formed by hot extrusion. Specifically, the flutes 210 may be helical flutes 210 or straight flutes 210. Of course, the blade body 200 has a side cutting edge, and the side cutting edge may be a spiral edge or a straight edge.
The utility model discloses still provide a drilling machine, this drilling machine includes the cutter, and the concrete structure of this cutter refers to above-mentioned embodiment, because this drilling machine has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, the drilling machine is a medical instrument.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A cutting tool for use with a medical instrument, comprising:
a knife handle;
the knife body is connected with one end of the knife body; and
a drill bit, the drill bit comprising:
one end of the drilling part is connected with the other end of the cutter body, and a first tip part is formed at the other end of the drilling part; and
and the second tip end part is connected to the first tip end part, and the sharp angle of the second tip end part is smaller than that of the first tip end part.
2. the tool of claim 1, wherein the angle of the sharp angle of the second tip portion is α, 60 ° α or more and 90 ° or less.
3. The tool of claim 1, wherein the angle of the sharp corner of the first tip portion is γ, 90 ° ≦ γ ≦ 120 °.
4. The tool according to claim 1, wherein the second tip portion has a chisel edge having a width W, 0.15mm W0.40 mm.
5. the tool according to claim 4, wherein the chisel edge bevel angle is β, and wherein β is 40 ° to 50 °.
6. A tool as claimed in any one of claims 1 to 5, wherein the blade is of integral construction with the shank.
7. The tool according to any one of claims 1 to 5, wherein the blade is of unitary construction with the drill bit.
8. The tool according to any one of claims 1 to 5, wherein the tool body is provided with a plurality of chip flutes.
9. The tool as set forth in claim 8, wherein said flutes are helical.
10. A drilling machine, characterized in that it comprises a tool according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738953.6U CN210541876U (en) | 2019-05-21 | 2019-05-21 | Tool and drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738953.6U CN210541876U (en) | 2019-05-21 | 2019-05-21 | Tool and drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210541876U true CN210541876U (en) | 2020-05-19 |
Family
ID=70664331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920738953.6U Active CN210541876U (en) | 2019-05-21 | 2019-05-21 | Tool and drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210541876U (en) |
-
2019
- 2019-05-21 CN CN201920738953.6U patent/CN210541876U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200628 Address after: 523000 Room 201, building 2, No. 3 Hualian street, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Guangdong ante dental Co.,Ltd. Address before: 523000 Third Floor, Block 3A, Hualian Street, Songshan Lake Hi-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: Dongguan Ante Medical Devices Co.,Ltd. |