CN205869546U - It bores to open chamfer of using in the bolt head hole - Google Patents
It bores to open chamfer of using in the bolt head hole Download PDFInfo
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- CN205869546U CN205869546U CN201620867575.8U CN201620867575U CN205869546U CN 205869546 U CN205869546 U CN 205869546U CN 201620867575 U CN201620867575 U CN 201620867575U CN 205869546 U CN205869546 U CN 205869546U
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- drillstock
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- drill
- bolt head
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Abstract
The utility model provides an it bores to open chamfer of using in the bolt head hole, includes drill bit and drillstock, the drill bit is kept away from and is included in proper order in the direction of drillstock and bore the body by the drill tip to and connect to bore the platform of being connected of body and drillstock, wherein the cross section of drill tip sets up to trapezoidal, and its external diameter is crescent from the direction of neighbouring drillstock, that bores the body transversally personally submits trapezoidally, and its external diameter reduces from the orientation of neighbouring drillstock gradually, and should bore the body and be greater than towards the terminal surface external diameter of drillstock one side the external diameter of drillstock, seted up 3 chip grooves on the drill bit uniformly, and every chip groove runs through the drill tip and bores the body to the part stretches into to connecting the platform, wherein the chip groove is in the part of drill tip, and its bore is crescent from the direction of neighbouring drillstock, the chip groove is the part of boring the body centre of a circle line slope setting for the drill bit. The utility model discloses can drill out the hole that has the countersunk head effect at the bolt head to the realization via the bolt of this chamfer brill effect with its around product body highly the same.
Description
Technical field
This utility model belongs to bit technique field, is specifically related to a kind of chamfer drill opening bolt head holes.
Background technology
At present, there is not a kind of chamfer drill that the head having had openning hole in bolt can be carried out chamfered, it is impossible to very
Meet well the use demand of people.
Utility model content
The purpose of this utility model is to provide a kind of and opens falling of bolt head holes for solve above-mentioned technical problem
Angular bit.
The chamfer drill opening bolt head holes provided by the utility model, including drill bit, and the brill being fixed on drill bit
Handle, described drill bit is prepared from by hard alloy steel, and it, from away from including apex point the direction of drillstock successively, bores body, Yi Jilian
Connecing the connected unit boring body and drillstock, the cross section of wherein said apex point is set to trapezoidal, its external diameter from the direction of neighbouring drillstock by
Cumulative greatly；The cross section of described brill body is trapezoidal, and its external diameter is gradually reduced from the direction of neighbouring drillstock, and this brill body is towards drillstock
The end face external diameter of side is more than the external diameter of described drillstock；3 chip areas, and each chip area is offered equably on described drill bit
Running through apex point and bore body, and part stretches to connected unit, wherein said chip area is in the part of apex point, and its bore is from neighbouring drillstock
Direction be gradually increased, described chip area bore body part be obliquely installed relative to the center of circle line of drill bit.
As preferred version of the present utility model, described connected unit is set in sector structure, and described drillstock and is connected
The side end that platform is connected offers annular groove.
As preferred version of the present utility model, described chip area stretches to the part of connected unit and is set to arc surface.
As preferred version of the present utility model, the outer face of described brill body is less than relative to the angle of drill bit center of circle line
5°。
As preferred version of the present utility model, the outer face of described brill body is 2 ° relative to the angle of drill bit center of circle line.
As preferred version of the present utility model, it is attached between described drill bit and drillstock fixing in the way of brazing.
Due to the application of technique scheme, this utility model has the advantages that
The chamfer drill opening bolt head holes of the present utility model, is arranged by the rational structure of drill bit so that this chamfering
It is drilled in time the bolt having had openning hole is carried out bore operation, can get out at bolt head and there is the hole of countersunk head effect, to realize warp
Identical with the height of product ontology about by the bolt of this chamfer drill effect；Meanwhile, 3 chip areas being provided with, can and
Time ground this chamfer drill produced crumble of work is discharged, meet the use demand of people further.
Accompanying drawing explanation
Fig. 1 is the front view of the chamfer drill opening bolt head holes that this utility model preferred embodiment is provided.
Fig. 2 is the left view of the chamfer drill opening bolt head holes that this utility model preferred embodiment is provided.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain this
Utility model, is not used to limit this utility model.
Referring to Fig. 1, Fig. 2, what this utility model preferred embodiment was provided opens the chamfer drill 100 of bolt head holes,
Being particularly used for carrying out bore operation on bolt head with the hole held successfully, it includes drill bit 10 and is fixed on the brill on drill bit 10
Handle 20.In the present embodiment, described drill bit 10 is specifically attached with drillstock 20 fixing in the way of brazing.
Described drill bit 10 is prepared from by hard alloy steel, and the drill bit 10 of the present embodiment is from the direction away from drillstock 20
On include apex point 11 successively, bore body 12, and connect the connected unit 13 boring body 12 with drillstock 20, that is the drill bit 10 of the present embodiment
The most specifically it is divided into apex point 11, bores body 12 and connected unit 13.Wherein, the cross section of described apex point 11 is trapezoidal, its
External diameter is gradually increased from the direction of neighbouring drillstock 20, and the cross section boring body 12 is the most trapezoidal, and its external diameter is from neighbouring drillstock 20
Direction is gradually reduced, and this brill body 12 towards the end face external diameter of drillstock 10 side more than the external diameter of described drillstock 20.In this enforcement
In example, the outer face of described brill body 12 is less than 5 ° relative to the angle of drill bit 10 center of circle line, preferably 2 °.
From the foregoing, it will be observed that described connected unit 13 is particularly used for connecting bores body 12 and drillstock 20, so, at the present embodiment
In, this connected unit 13 can be specifically configured in sector structure, and described drillstock 20 side end being connected with connected unit 13
Offer annular groove 21.
It is appreciated that the chamfer drill 100 of the present embodiment is additionally provided with chip area 14 on its drill bit 10, with by this chamfer drill
100 when bore operation produced crumble discharge in time.In the present embodiment, described drill bit 10 offers 3 equably
Individual chip area 14, and each chip area 14 runs through apex point 11 and bores body 12, and part stretches to connected unit 13, wherein said chip removal
Groove 14 is gradually increased from the direction of neighbouring drillstock 20 at the part of apex point 11, its bore, and described chip area 14 is boring the portion of body 12
Split-phase is obliquely installed for the center of circle line of drill bit 10, is preferably in the outs open end boring body 12 in this chip area 14 and is boring body
It is uneven for being formed two end lines in ground on 12, to meet the effect of chip removal further.And the chip area 14 of the present embodiment is stretched
The part entered to connected unit 13 is set to arc surface, this is because the chamfer drill 100 of the present embodiment is when specific works, and its drill bit
Its apex point 11 can be extend into bolt head holes by 10, and when extending into the degree of depth of movement, the top of its apex point 11 will be against
In the bottom of bolt head holes, and can not further stretch into, in extreme circumstances, this chamfer drill 100 stretches to bolt head
The degree of depth in hole can only arrive the position boring body 12 the most deeply, so, the chip area 14 of the present embodiment in the connected unit 13 of drill bit 10 only
Stretch into part, meet chip removal requirement.
To sum up, the chamfer drill opening bolt head holes of the present utility model, arranged by the rational structure of drill bit so that should
Chamfer drill, when the bolt having had openning hole is carried out bore operation, can get out at bolt head and have the hole of countersunk head effect, with reality
Now the bolt via this chamfer drill effect is identical with the height of product ontology about；Meanwhile, 3 chip areas being provided with,
In time produced for the work of this chamfer drill crumble can be discharged, meet the use demand of people further.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (6)
1. the chamfer drill opening bolt head holes, it is characterised in that: include drill bit, and the drillstock being fixed on drill bit, institute
Stating drill bit to be prepared from by hard alloy steel, it, from away from including apex point the direction of drillstock successively, bores body, and connects brill body
With the connected unit of drillstock, the cross section of wherein said apex point is set to trapezoidal, and its external diameter is gradually increased from the direction of neighbouring drillstock；
The cross section of described brill body is trapezoidal, and its external diameter is gradually reduced from the direction of neighbouring drillstock, and this brill body is towards drillstock side
End face external diameter is more than the external diameter of described drillstock；Offer 3 chip areas on described drill bit equably, and each chip area runs through brill
Point and brill body, and partly stretch to connected unit, wherein said chip area is in the part of apex point, and its bore is from the direction of neighbouring drillstock
Being gradually increased, described chip area is obliquely installed relative to the center of circle line of drill bit in the part boring body.
The chamfer drill opening bolt head holes the most according to claim 1, it is characterised in that: described connected unit is set to fan
The side end being connected with connected unit in shape structure, and described drillstock offers annular groove.
The chamfer drill opening bolt head holes the most according to claim 2, it is characterised in that: described chip area stretches to even
The part connecing platform is set to arc surface.
The chamfer drill opening bolt head holes the most according to claim 1, it is characterised in that: the outer face phase of described brill body
Angle for drill bit center of circle line is less than 5 °.
The chamfer drill opening bolt head holes the most according to claim 4, it is characterised in that: the outer face phase of described brill body
Angle for drill bit center of circle line is 2 °.
The chamfer drill opening bolt head holes the most according to claim 1, it is characterised in that: between described drill bit and drillstock
It is attached fixing in the way of brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620867575.8U CN205869546U (en) | 2016-08-10 | 2016-08-10 | It bores to open chamfer of using in the bolt head hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620867575.8U CN205869546U (en) | 2016-08-10 | 2016-08-10 | It bores to open chamfer of using in the bolt head hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205869546U true CN205869546U (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620867575.8U Active CN205869546U (en) | 2016-08-10 | 2016-08-10 | It bores to open chamfer of using in the bolt head hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205869546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869915A (en) * | 2017-09-18 | 2018-04-03 | 宁夏金海永和泰冶化有限公司 | The method that furnace of calcium carbide discloses logical stove eye |
-
2016
- 2016-08-10 CN CN201620867575.8U patent/CN205869546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869915A (en) * | 2017-09-18 | 2018-04-03 | 宁夏金海永和泰冶化有限公司 | The method that furnace of calcium carbide discloses logical stove eye |
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