CN207372357U - One kind is detachably connected reliable sandwich drill bit - Google Patents
One kind is detachably connected reliable sandwich drill bit Download PDFInfo
- Publication number
- CN207372357U CN207372357U CN201721322716.9U CN201721322716U CN207372357U CN 207372357 U CN207372357 U CN 207372357U CN 201721322716 U CN201721322716 U CN 201721322716U CN 207372357 U CN207372357 U CN 207372357U
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- hole
- threaded
- drill bit
- threaded hole
- column
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- Drilling Tools (AREA)
Abstract
One kind is detachably connected reliable sandwich drill bit, including integrally formed cone and cone column, the upper end for boring column has the first convex edge disk, at least two first threaded holes are offered on first convex edge disk, annular gap is offered in the middle part of cone column, annular gap offers horizontal the second threaded hole run through thereon, bores and first through hole is offered on the outer wall of column around threaded post is formed in threaded post；Mating shaft end offers rotation set in being connected with the second convex edge disk on the inner bolt hole in threaded post, shaft with drill bit, is opened up on the second convex edge disk there are two the 3rd threaded hole, and the second through hole is offered on the side wall of shaft；When the complete rotation set of threaded post is in inner bolt hole, the axis of first threaded hole and the 3rd threaded hole overlaps, the axis of first through hole, the second through hole and the second threaded hole overlaps, the first bolt is screwed in the first threaded hole and the 3rd threaded hole at this time, the second bolt is screwed in first through hole, the second through hole and the second threaded hole.
Description
Technical field
The utility model is related to drilling tool accessories fields, and in particular to one kind is detachably connected reliable sandwich drill bit.
Background technology
Drill bit is the important accessory of the industrial drills such as drilling machine, portable drilling tool, and the quality of drill bit is directly related to entire brill
The quality of tool.Existing drill bit can be divided into two kinds of one-piece drill bit and demountable bit, and one-piece drill bit is shaft and drill bit
It is integrally formed, if necessary to more bit change, it is necessary to it is replaced together with shaft, and demountable bit is adopted between drill bit and shaft
With dismountable connection, when replacement, only needs to be individually replaced drill bit.Existing detachable type drill, often bonding strength is not
Enough, all improve space in connection area, connection direction dimension.
Utility model content
In view of the above-mentioned problems, the utility model, which provides one kind, is detachably connected reliable sandwich drill bit.
The purpose of this utility model is realized using following technical scheme：
One kind is detachably connected reliable sandwich drill bit, and including integrally formed cone and cone column, the upper end for boring column has
First convex edge disk offers at least two first threaded holes on the first convex edge disk, bores and annular gap is offered in the middle part of column, annular
Spacer ring offers horizontal the second threaded hole run through thereon, bores and offered on the outer wall of column around threaded post is formed in threaded post
First through hole；It is convex in being connected with second on the inner bolt hole in threaded post, shaft to offer rotation set for mating shaft end with drill bit
It along disk, is opened up on the second convex edge disk there are two the 3rd threaded hole, the second through hole is offered on the side wall of shaft；When threaded post is complete
When rotation set is in inner bolt hole, the axis of the first threaded hole and the 3rd threaded hole overlaps, first through hole, the second through hole and the second screw thread
The axis in hole overlaps, and screws in the first bolt, first through hole, the second through hole and second in the first threaded hole and the 3rd threaded hole at this time
The second bolt is screwed in threaded hole.
Description of the drawings
Using attached drawing, the utility model is described in further detail, but the embodiment in attached drawing is not formed to the utility model
Any restrictions, without creative efforts, can also be according to following attached for those of ordinary skill in the art
Figure obtains other attached drawings.
Fig. 1 is the front section view of the utility model；
Fig. 2 is the sandwich drill bit and the cooperation axonometric drawing of shaft；
Fig. 3 is the axonometric drawing of threaded post.
Fig. 4 is external axonometric drawing when threaded post is completely screwed into inner bolt hole.
Specific embodiment
The utility model is further described with the following Examples.
The one kind referred to as shown in Figs. 1-3 is detachably connected reliable sandwich drill bit, including integrally formed 1 He of cone
Column 2 is bored, the upper end of cone column 2 has the first convex edge disk 3, at least two first threaded holes 4 are offered on the first convex edge disk 3, bore column 2
Middle part offer annular gap 5, annular gap 5 offers horizontal through thereon around threaded post 6 is formed in threaded post 6
Second threaded hole 7 bores and offers first through hole 8 on the outer wall of column 2；Shaft 9 end mating with drill bit offers rotation set in spiral shell
Inner bolt hole 10 on line column 6 is connected with the second convex edge disk 11 in shaft 9, opens up that there are two the 3rd screw threads on the second convex edge disk 11
Hole 12 offers the second through hole 13 on the side wall of shaft 9；When 6 complete rotation set of threaded post is in inner bolt hole 10, the first threaded hole
4 and the 3rd the axis of threaded hole 12 overlap, the axis of first through hole 8, the second through hole 13 and the second threaded hole 7 overlaps, at this time the
The first bolt 14 is screwed in one threaded hole 4 and the 3rd threaded hole 12, is revolved in first through hole 8, the second through hole 13 and the second threaded hole 7
Enter the second bolt 15.
As further preferred embodiment, the threaded post 6 is integrally formed with cone column 2.
As further preferred embodiment, the outer surface of the threaded post 6 has external screw thread, has interior spiral shell in inner bolt hole 10
Line.
As further preferred embodiment, the height of the inner bolt hole 10 is identical with the height of threaded post 6.
As further preferred embodiment, first threaded hole 4 is identical with the diameter of the 3rd threaded hole 12, and described first
Through hole 8, the second through hole 13 are identical with the diameter of the second threaded hole 7.
The drill bit is integrally made of stainless steel alloy, and shaft 9 is driven by motor (prior art is not shown in figure) revolves
Turn.
During the sandwich drill bit installation, threaded post 6 is rotatably connected in completely in inner bolt hole 10, is then threaded into two the first bolts 14
It is fixed with second bolt 15, which uses the installation side of 6 sandwich shaft 9 of stud 2 and threaded post
Formula, substantially increases the connection area between shaft 9 and drill bit, and the first bolt 14, the second bolt 15, threaded post 6 and interior spiral shell
Cooperation between hole 10, three collectively form a multidirectional connection and fix net, the bonding strength of drill bit are substantially increased, in reality
Border achieves good effect in.
Finally it should be noted that above example is only to illustrate the technical solution of the utility model rather than to this reality
With the limitation of novel protected scope, although being explained in detail with reference to preferred embodiment to the utility model, this field it is general
Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the utility model, without departing from this
The spirit and scope of utility model technical solution.
Claims (5)
1. one kind is detachably connected reliable sandwich drill bit, including integrally formed cone and cone column, it is characterized in that, bore the upper of column
End has the first convex edge disk, offers at least two first threaded holes on the first convex edge disk, bores and is offered in the middle part of column between annular
Gap, annular gap offer horizontal the second threaded hole run through thereon, bore on the outer wall of column around threaded post is formed in threaded post
Offer first through hole；Mating shaft end offers rotation set and is connected on the inner bolt hole in threaded post, shaft with drill bit
Second convex edge disk is opened up on the second convex edge disk there are two the 3rd threaded hole, and the second through hole is offered on the side wall of shaft；Work as screw thread
When the complete rotation set of column is in inner bolt hole, the axis of the first threaded hole and the 3rd threaded hole overlaps, first through hole, the second through hole and the
The axis of two threaded holes overlaps, and screws in the first bolt, first through hole, the second through hole in the first threaded hole and the 3rd threaded hole at this time
With the second bolt is screwed in the second threaded hole.
2. one kind according to claim 1 is detachably connected reliable sandwich drill bit, it is characterized in that, the threaded post and cone
Column is integrally formed.
3. one kind according to claim 2 is detachably connected reliable sandwich drill bit, it is characterized in that, outside the threaded post
Surface has external screw thread, has internal thread in inner bolt hole.
4. one kind according to claim 3 is detachably connected reliable sandwich drill bit, it is characterized in that, the height of the inner bolt hole
Degree is identical with the height of threaded post.
5. one kind according to claim 4 is detachably connected reliable sandwich drill bit, it is characterized in that, first threaded hole
Identical with the diameter of the 3rd threaded hole, the diameter of the first through hole, the second through hole and the second threaded hole is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721322716.9U CN207372357U (en) | 2017-10-15 | 2017-10-15 | One kind is detachably connected reliable sandwich drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721322716.9U CN207372357U (en) | 2017-10-15 | 2017-10-15 | One kind is detachably connected reliable sandwich drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207372357U true CN207372357U (en) | 2018-05-18 |
Family
ID=62339291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721322716.9U Active CN207372357U (en) | 2017-10-15 | 2017-10-15 | One kind is detachably connected reliable sandwich drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207372357U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158639A (en) * | 2018-11-18 | 2019-01-08 | 湖南新融创科技有限公司 | A kind of mobile phone shell earphone jack processing unit (plant) |
| CN110976972A (en) * | 2019-12-19 | 2020-04-10 | 云南维克达汽车零部件有限公司 | Compound cutter for flange plate |
-
2017
- 2017-10-15 CN CN201721322716.9U patent/CN207372357U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158639A (en) * | 2018-11-18 | 2019-01-08 | 湖南新融创科技有限公司 | A kind of mobile phone shell earphone jack processing unit (plant) |
| CN110976972A (en) * | 2019-12-19 | 2020-04-10 | 云南维克达汽车零部件有限公司 | Compound cutter for flange plate |
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| GR01 | Patent grant |