CN206065498U - A kind of drill bit - Google Patents
A kind of drill bit Download PDFInfo
- Publication number
- CN206065498U CN206065498U CN201620910790.1U CN201620910790U CN206065498U CN 206065498 U CN206065498 U CN 206065498U CN 201620910790 U CN201620910790 U CN 201620910790U CN 206065498 U CN206065498 U CN 206065498U
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- China
- Prior art keywords
- drill bit
- cutting edge
- main cutting
- degree
- work department
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Abstract
The utility model discloses a kind of drill bit, including shank and the work department of setting shank forward end, the front end of the work department is provided with main cutting edge, and its sidepiece is provided with spiral helicine front cutting edge, the anterior angle of the main cutting edge between 0 degree to 10 degree, and including 0 degree and 10 degree.In this utility model, the anterior angle of the main cutting edge of drill bit is reduced, even if the two sides angle increase of main cutting edge, it is effectively improved the intensity of main cutting edge, and then is effectively improved the service life of drill bit, and because increased the angle of the both sides side of main cutting edge, when there is passivation in the main cutting edge of drill bit, reconditioning can be carried out by the main cutting edge to drill bit, so that main cutting edge can return to normal condition, and then the service life of the drill bit for effectively extending.In sum, the drill bit effectively can increase the service life, it is possible to efficiently solving the use cost of drill bit than larger problem.
Description
Technical field
This utility model is related to tool implement field, more particularly, it relates to a kind of drill bit.
Background technology
Drill bit is a kind of common pore-creating instrument, typically goes out through hole or blind hole with for the drilling on solid material, or
Reaming is carried out to existing hole.Drill bit is applied in industrial circle widely, is pore-creating instrument main at present.
Current drill bit is all integrally formed using high-strength material, typically has main cutting edge on drill bit, and pair is cut
Sword is cut, two cutting edges are typically all manufactured in the same way.But study for a long period of time discovery through inventor, in reality
In the use of border, main cutting edge often occurs in high-speed cutting, passivation easily occurs, and now front cutting edge is intact
, now the shank of drill bit is also all intact.And because main cutting edge is passivated completely, cause drill bit be cut, institute
So that drill bit use cost can be caused to greatly increase.
In sum, the use cost of drill bit how is efficiently solved than larger problem, be current people in the art
Member's urgent problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of drill bit, and the drill bit can efficiently solve drill bit
Use cost is than larger problem.
In order to achieve the above object, this utility model provides following technical scheme：
A kind of drill bit, including the work department of shank and setting shank forward end, the front end of the work department is provided with main cutting
Sword, and its sidepiece is provided with spiral helicine front cutting edge, the anterior angle of the main cutting edge between 0 degree to 10 degree, and including 0 degree
With 10 degree.
Preferably, the anterior angle of the main cutting edge is 5 degree.
Preferably, the drill bit is titanium alloy spiral bit.
Preferably, also horizontal stroke is provided with the cervical region including the cervical region being connected between the work department and the shank
Section is in polygonal interpolating unit, and the slot coordinated with the interpolating unit grafting is provided with the work department.
Preferably, the interpolating unit and the slot interference fit, the cervical region are integrally formed with the shank.
Preferably, the front end of the interpolating unit is offseted with the bottom land of the slot.
Preferably, the front cutting edge is integrally formed with the work department, and the main cutting edge is removable with the work department
Unload and be fixedly connected.
Preferably, shank includes tang and is arranged on the post portion of the tang front end, and the post portion is in from front to back
Gradual shrinkage.
A kind of drill bit that this utility model is provided, wherein drill bit include shank and work department, and the rear end of wherein shank is used for
The installing hole connection of drill bit, and work department is arranged on the front end of shank.The front end of wherein work department is provided with main cutting edge, and
Its sidepiece is provided with spiral helicine front cutting edge.The wherein anterior angle of main cutting edge between 0 degree to 10 degree, and including 0 degree and 10
Degree, wherein anterior angle can be drawn in the following way：On the cross section of the knife edge of main cutting edge, anterior angle is wherein main cutting edge
The complementary angle of the angle of both sides side, herein it should be noted that being all cambered surface because of the both sides side of general main cutting edge, now
The angle of both sides side refers to the angle of tangent line of the two sides at knife edge.
According to above-mentioned technical scheme, in this utility model, the anterior angle of the main cutting edge of drill bit is limited, that is, is had
The anterior angle of main cutting edge is reduced to effect, and then increased the angle between two sides.In use, the two sides of main cutting edge
Angle increases, and is effectively improved the intensity of main cutting edge, and then is effectively improved the service life of drill bit, and even more important
, because increased the angle of the both sides side of main cutting edge, when passivation occurs in the main cutting edge of drill bit, it is right to pass through
The main cutting edge of drill bit carries out reconditioning, so that main cutting edge can return to normal condition, and then the drill bit for effectively extending makes
Use the life-span.In sum, the drill bit effectively can increase the service life, it is possible to efficiently solving the use cost of drill bit
Than larger problem.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
The structural representation of the bit operation portion front end that Fig. 1 is provided for this utility model embodiment；
The structural representation of the main cutting edge anterior angle that Fig. 2 is provided for this utility model embodiment；
The structural representation of the drill bit that Fig. 3 is provided for this utility model embodiment.
In accompanying drawing, labelling is as follows：
Shank 1, work department 2, main cutting edge 3, front cutting edge 4, cervical region 5, anterior angle 6.
Specific embodiment
This utility model embodiment discloses a kind of drill bit, is asked than larger with efficiently solving the use cost of drill bit
Topic.
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Refer to Fig. 1-Fig. 3, the structural representation of the bit operation portion front end that Fig. 1 is provided for this utility model embodiment；
The structural representation of the main cutting edge anterior angle that Fig. 2 is provided for this utility model embodiment；Fig. 3 is provided for this utility model embodiment
Drill bit structural representation.Fig. 2 is N-N directions sectional drawing in Fig. 1.
In a kind of specific embodiment, present embodiments provide a kind of drill bit, for being drilled on solid material or
Person's reaming, herein drill bit preferably adopt spiral bit, and preferably titanium alloy spiral bit.Wherein drill bit includes shank 1 and work
Portion 2, the wherein rear end of shank 1 are connected for the installing hole with drill bit, and work department 2 is arranged on the front end of shank 1.Wherein shank
1, typically in cylinder, connects for convenience, and shank 1 can be made to include tang and be arranged on the post portion of tang front end, and post portion is in the past
Hold to rear end in gradual shrinkage, by tang can convenient transmitting torque, enable post portion to be in gradual shrinkage from front to back
It is convenient to be felt relieved.
The front end of wherein work department 2 is provided with main cutting edge 3, and its sidepiece is provided with spiral helicine front cutting edge, its
Middle main cutting edge 3 plays main shear action in boring procedure, and 4 secondary shear actions of front cutting edge.
The wherein anterior angle 6 of main cutting edge 3 and including 0 degree and 10 degree, and preferably adopts 5 degree between 0 degree to 10 degree.Its
Middle anterior angle 6 can be drawn in the following way：It is on the cross section of the knife edge of main cutting edge 3, concrete such as N-N directions in accompanying drawing 1
Tangent plane, complementary angle of the anterior angle 6 for the wherein angle of 3 both sides side of main cutting edge, herein it should be noted that because general main cutting
The both sides side of sword is all cambered surface, and now the angle of both sides side refers to the angle of tangent line of the two sides at knife edge, specifically
Can be as can be seen from Figure 2.
In this embodiment, the anterior angle 6 of the main cutting edge 3 of drill bit is limited, that is, efficiently reduces main cutting edge 3
Anterior angle 6, and then increased the angle between two sides.In use, the two sides angle increase of main cutting edge 3, effectively carries
The high intensity of main cutting edge 3, and then the service life of drill bit, and what is more important are effectively improved, because increased
The angle of the both sides side of main cutting edge 3, when there is passivation in the main cutting edge 3 of drill bit, can be by the main cutting to drill bit
Sword 3 carries out reconditioning, so that main cutting edge 3 can return to normal condition, and then the service life of the drill bit for effectively extending.To sum up
Described, the drill bit effectively can increase the service life, it is possible to the use cost for efficiently solving drill bit is asked than larger
Topic.
Further, can cervical region 5 be set between shank 1 and work department 2, while cross section is provided with cervical region 5 being in
Polygonal interpolating unit, and the slot being engaged with Plug Division is provided with work department 2.Formed with work department 2 by cervical region 5 and inserted
Connect, conveniently can dismantle.And the cross section of interpolating unit is set to into polygon, both can be limited and relatively rotated, can be protected then
Card cervical region 5 drives work department 2 to rotate.So the drill bit conveniently can not only be dismantled, additionally it is possible to ensure the general that cervical region 5 can be larger
Moment of torsion is transferred to work department 2, it is ensured that the bonding strength between two two.The preferred tetragon in cross section of wherein interpolating unit or three
It is angular.
Further, interpolating unit and slot interference fit, certain interpolating unit is made to limit both by latch with slot
Along the relative movement of grafting direction, but this connection is cumbersome, and latch is easy to depart from.Using interference fit, not only
Ensure bonding strength, additionally it is possible to ensure easy for installation.Grafting relation can also be adopted wherein between cervical region 5 and shank 1, but is examined
Considering general cervical region 5 can be consistent with the service life of shank 1, at the same in order to avoid installing trouble, and difficulty of processing is reduced, herein
It is preferred that cervical region 5 is integrally formed with shank 1, can be integrally casting shaping, or processed by same material block.
Further, make the front end of interpolating unit offset with the bottom land of slot, with by bottom land limit work department 2 and shank 1 to
Mutually close direction movement.During using drill bit, because the main cutting edge of drill bit 3 is radially extended, cause then drill bit
The power of axis direction can be subject to, so by bottom land, can make bigger axial force is transmitted between cervical region 5 and work department 2.
Further, front cutting edge 4 can be made to be integrally formed with work department 2, main cutting edge 3 is detachable with work department 2 solid
It is fixed to connect.Wherein twist, independent difficulty of processing is very big for front cutting edge 4, so adopt and being integrally formed and can be effectively reduced
Difficulty of processing.Wherein main cutting edge 3 is detachably fixed with work department 2 and is connected, and is not adopted and be integrally formed, it should be noted that this
Place's main cutting edge 3 should not only include blade main body, should also include connecting portion, and main cutting edge 3 is arranged on the front end of work department 2,
Overall volume is larger, and shape is relatively simple, and difficulty of processing is little, it is possible to realizing separate machined.It is in drill bit all parts, main
The life-span of cutting edge 3 is appreciably shorter, using connection is detachably fixed, is replaced can main cutting edge 3, improves drill bit entirety
Service life.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use that this practicality is new
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
1. a kind of drill bit, including shank (1) and the work department (2) of setting shank (1) front end, the front end of the work department (2) sets
Main cutting edge (3) is equipped with, and its sidepiece is provided with spiral helicine front cutting edge (4), it is characterised in that the main cutting edge (3)
Anterior angle (6) between 0 degree to 10 degree, and including 0 degree and 10 degree.
2. drill bit according to claim 1, it is characterised in that the anterior angle (6) of the main cutting edge (3) is 5 degree.
3. drill bit according to claim 2, it is characterised in that the drill bit is titanium alloy spiral bit.
4. the drill bit according to any one of claim 1-3, it is characterised in that also including be connected to the work department (2) with
Cervical region (5) between the shank (1), is provided with cross section in polygonal interpolating unit, the work department on the cervical region (5)
(2) slot coordinated with the interpolating unit grafting is provided with.
5. drill bit according to claim 4, it is characterised in that the interpolating unit and the slot interference fit, the cervical region
(5) it is integrally formed with the shank (1).
6. drill bit according to claim 5, it is characterised in that the front end of the interpolating unit is offseted with the bottom land of the slot.
7. drill bit according to claim 6, it is characterised in that the front cutting edge (4) and the work department (2) integrally into
Type, the main cutting edge (3) are detachably fixed with the work department (2) and are connected.
8. drill bit according to claim 7, it is characterised in that shank (1) is including tang and is arranged on the tang front end
Post portion, the post portion from front to back be in gradual shrinkage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620910790.1U CN206065498U (en) | 2016-08-19 | 2016-08-19 | A kind of drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620910790.1U CN206065498U (en) | 2016-08-19 | 2016-08-19 | A kind of drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206065498U true CN206065498U (en) | 2017-04-05 |
Family
ID=58430942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620910790.1U Expired - Fee Related CN206065498U (en) | 2016-08-19 | 2016-08-19 | A kind of drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206065498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161081A (en) * | 2018-01-19 | 2018-06-15 | 苏州阿诺精密切削技术有限公司 | For the drill bit to the metal works Drilling operation with cementation zone |
-
2016
- 2016-08-19 CN CN201620910790.1U patent/CN206065498U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161081A (en) * | 2018-01-19 | 2018-06-15 | 苏州阿诺精密切削技术有限公司 | For the drill bit to the metal works Drilling operation with cementation zone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20190819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |