CN206009935U - A kind of drill tip and drill bit - Google Patents
A kind of drill tip and drill bit Download PDFInfo
- Publication number
- CN206009935U CN206009935U CN201620705750.3U CN201620705750U CN206009935U CN 206009935 U CN206009935 U CN 206009935U CN 201620705750 U CN201620705750 U CN 201620705750U CN 206009935 U CN206009935 U CN 206009935U
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- CN
- China
- Prior art keywords
- cutting edge
- cutter tooth
- breach
- drill tip
- front cutting
- Prior art date
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Abstract
The utility model discloses a kind of drill tip and drill bit, its drip irrigation device is to include cutter tooth, the roughly triangular structure setting in the cross section of the cutter tooth, its end offers main cutting edge, the side of the cutter tooth is provided with the front cutting edge being connected with main cutting edge, and the side on the cutter tooth relative to front cutting edge is provided with to allow puts breach.Front cutting edge contact area in cutting is effectively reduced, so that drilling resistance is greatly reduced, drilling is more easily quick, reduce the probability that firmly crisp material is drilled split, and due to reducing bit weight, reduce the number of times of drill bit friction workpiece when drilling through a hole so that drill life is obviously prolonged.
Description
Technical field
This utility model is related to drill bit structure design field, more specifically, it relates to a kind of drill tip and brill
Head.
Background technology
Drill bit typically has body of the basic overall shape for cylindricality, and its end is fixed with blade.
At present, notification number discloses a kind of two-sided cutter tooth of diamond thin-wall drill bit for the Chinese patent of CN204262432U,
Cutting face both sides including cutter tooth are vee, and in hemizonid shape, cutter tooth solder side contact area ratio is cut in the cutter tooth high face that regards
Bevel is little.
And, notification number discloses a kind of drill tip and drill bit for the Chinese patent of CN101856738A, and it includes welding
Connect base portion and the cutting edge positioned at welding base top;The bottom center of the welding base is provided with locating notch.The drill bit bag
Drill body and drill tip is included, the drill tip includes welding base and the cutting edge positioned at welding base top, described
The top of drill body is provided with welding groove;The welding base of the drill tip is located in the welding groove of drill body, the brill
Stretch out the drill body both sides in the left and right sides end of head blade;The bottom center of the welding base is provided with locating notch, institute
The side wall for stating locating notch left and right sides end is stuck in the two side ends of welding groove bottom wall.
Both the above blade in drilling working angles, except the main cutting edge burden of end is main cut in addition to, its both sides
Front cutting edge acts primarily as the effect of guiding chip discharge, and the pair of the front cutting edge of above two blade both sides during chip
Cutting edge can be arrived by friction, the length meeting of time one rust, and then extends cutting duration, and prolonged cutting further causes
Front cutting edge meeting rust, again leads to extend cutting duration, and with this vicious cycle, the contact area of front cutting edge is larger, therefore
When drill bit is in drilling, frictional force is larger, and resistance is stronger, not only increases the probability that firmly crisp material is drilled split, also enhances brill
The load of piece, so that reduce the service life for boring piece.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of drill tip, the blade energy
Enough contacts area for effectively reducing front cutting edge.
For achieving the above object, this utility model provides following technical scheme：A kind of drill tip, including cutter tooth, institute
State the roughly triangular structure setting in cross section of cutter tooth, its end offers main cutting edge, the side of the cutter tooth be provided with
The front cutting edge that main cutting edge is connected, the side on the cutter tooth relative to front cutting edge is provided with to allow puts breach.
By adopting above-mentioned technical proposal, contact area of the front cutting edge in cutting is effectively reduced so that drilling resistance
Greatly reduce, drilling is more easily quick, reduce the probability that firmly crisp material is drilled split, and bear due to reducing drill bit
Lotus, reduces the number of times of drill bit friction workpiece when drilling through a hole so that drill life is obviously prolonged.
This utility model is further arranged to：The thickness of the maximum inner diameter not less than cutter tooth for putting breach that allows.
By adopting above-mentioned technical proposal, appropriate holding allows the size dimension for putting breach, puts breach place to avoid allowing
Place becomes cutter tooth stress raiser, so as to cutter tooth easily from allow put indentation, there cracking and damage.
This utility model is further arranged to：Described allow put breach be provided with multiple.
By adopting above-mentioned technical proposal, when cutter tooth through-thickness is cut, can gradually increase the deep depth of cutter tooth
Degree, therefore multiple allowing put breach and avoid contact with can the front cutting edge of back segment, so as to reduce contact of the front cutting edge in cutting
Area, reduces drilling resistance.
This utility model is further arranged to：Described allow put breach with complementation in the form of be distributed on cutter tooth relative to
The side of front cutting edge.
By adopting above-mentioned technical proposal, during the drilling for remaining at any depth, there is the front cutting edge can be by chip
Guide, so as to not affect the drilling of main cutting edge, while also enabling adjacent front cutting edge avoid contacting with hole wall.
This utility model is further arranged to：Described allow put breach quantity be even number.
By adopting above-mentioned technical proposal, illustrate during with front cutting edge as two, be spaced on two front cutting edges
It is distributed with two to allow when putting breach, during cutter tooth depth chip, allows for corresponding a pair on two front cutting edges and put breach energy
The cutting stress of cutter tooth held stationary is enough made, and active force when enabling two front cutting edges to cut is canceled each other out, so as to carry
Stationarity of the high cutter tooth during chip.
This utility model is further arranged to：Described allowing puts the size of breach from main cutting edge one end of cutter tooth to another
One end gradually increases setting.
By adopting above-mentioned technical proposal, the big I for putting breach is allowed to become big with the working depth of cutter tooth, further
Reduce contact area of the front cutting edge in cutting.
This utility model is further arranged to：Described allow that puts breach to be shaped as circular arc or triangle or tetragon.
By adopting above-mentioned technical proposal, the problem of stress concentration during for avoiding using, using circular arc or triangle or
Tetragon these face the larger structure of side angle, put breach and burst apart facing side angle so as to prevent from allowing.
This utility model is further arranged to：The angle for allowing the inwall for putting breach and front cutting edge to be formed is more than
90°.
By adopting above-mentioned technical proposal, it is to avoid allow the intersection of the inwall and front cutting edge of putting breach to be also easy to produce stress collection
In, so as to effectively prevent the fragmentation of cutter tooth.
This utility model is further arranged to：The outline of the cutter tooth is in Semen Benincasae shape structure setting.
By adopting above-mentioned technical proposal, main cutting edge is in the end of cutter tooth, and the curved structure of front cutting edge increased
Thickness between front cutting edge, so that enhance the structural strength of front cutting edge.
The purpose of this utility model is also resided in and provides a kind of drill bit of the contact area that can reduce front cutting edge.
For achieving the above object, this utility model provides following technical scheme：A kind of drill bit, includes above-mentioned bit wing
Piece, also includes handle of a knife, and the handle of a knife is to justify handle or three bone knobs or hexagonal handle.
By adopting above-mentioned technical proposal, when drill bit using when blade need to be fixed on handle of a knife, and handle of a knife does not affect
The purposes of blade, handle of a knife can select to justify any type of handle of a knife design such as handle or three bone knobs or hexagonal handle, adapt to not for drill bit
Installation with clamping apparatus.
In sum, this utility model has the advantages that：Offer to allow on front cutting edge and put breach, so as to have
Effect reduces contact area of the front cutting edge in working angles, so as to reduce the frictional force suffered by front cutting edge so as to long
Time keeps enough sharp, effective reduction processing durations, improves work efficiency, material-saving cost.
Description of the drawings
Fig. 1 is the structural representation of cutter tooth in embodiment one；
Fig. 2 is the structural representation of cutter tooth in embodiment two；
Structural representations of the Fig. 3 for drill bit.
Reference：1st, cutter tooth；11st, main cutting edge；12nd, front cutting edge；13rd, allow and put breach；2nd, handle of a knife.
Specific embodiment
With reference to the accompanying drawings and examples, this utility model is further described.Wherein identical parts phase
Same reference is represented.It should be noted that word "front", "rear", "left", "right" used in describing below, " on " and
D score refers to the direction in accompanying drawing, and word " bottom surface " and " top surface ", " interior " and " outward " are referred respectively to towards or away from specific
The direction at component geometry center.
A kind of drill tip, including cutter tooth 1, the roughly triangular structure setting in the cross section of cutter tooth 1, its point are opened up
There is main cutting edge 11, and the opposite sides side of cutter tooth 1 is provided with the front cutting edge 12 being connected with main cutting edge 11.
Embodiment one, with reference to shown in Fig. 1, in Semen Benincasae shape structure setting, the bar number of front cutting edge 12 is the outline of cutter tooth 1
Two, two 12 curved structures of front cutting edge increased the thickness between two front cutting edges 12, so as to enhance pair
The structural strength of cutting edge 12；Be equipped with to allow on two front cutting edges 12 and put breach 13, with reduce front cutting edge 12 cutting when
Contact area, allow and put breach 13 and be each provided with two on two front cutting edges 12, and allow and put breach 13 with complementary shape
Formula is distributed on front cutting edge 12, so allow cutter tooth 1 remain at any depth drilling when have front cutting edge 12
Chip can be guided, so as to not affect the drilling of main cutting edge 11, while also enabling adjacent front cutting edge 12 keep away
Exempt to contact with hole wall；In addition illustrated with two front cutting edges 12 in scheming, on two front cutting edges 12, be intervally distributed with one
Or two or three allow when putting breach 13, keep allowing putting being correspondingly arranged on front cutting edge 12 of breach 13, make two secondary cuttings
Sword 12 is conducive to the cutting stress of 1 held stationary of cutter tooth in cutting by canceling each other out under cutting counteracting force, so as to
Improve stationarity of the cutter tooth 1 during chip.
Embodiment two, with reference to shown in Fig. 2, the outline of cutter tooth 1 can with structure setting triangular in shape, front cutting edge 12
Bar number is three, is again provided with allowing and puts breach 13, make the setting for putting breach 13 consistent with embodiment one on front cutting edge 12.By
This understands that the appearance profile of any cutter tooth 1 and cutting edge quantity can reduce the contact surface of cutting edge under the structure of the application
Long-pending effect, therefore the concrete shape structure of 1 part of cutter tooth, and the quantity of cutting edge are not related to the flesh and blood of the application.
Additionally it should be noted that, allow the thickness for putting the maximum inner diameter of breach 13 not less than cutter tooth 1, allow in appropriate holding
Put breach 13 size dimension when, it is to avoid allow put breach 13 too little and be also easy to produce stress concentration so as to cause cutter tooth 1 cracking etc.；Though
So to allowing the concrete shape for putting breach 13 to be not construed as limiting, can be circular arc or triangle or tetragon, but allow and put in breach 13
Angle between wall causes cutter tooth 1 to put cracking etc. at breach 13 from allowing because avoiding the occurrence of acute angle so as to avoid stress concentration, with
When allow the angle formed by the inwall for putting breach 13 and front cutting edge 12 to should be greater than 90 °, it is to avoid allow put the inwall of breach 13 with secondary
The intersection of cutting edge 12 is also easy to produce stress concentration, so as to effectively prevent the fragmentation of cutter tooth 1；The purpose of said structure is in order to keep away
Exempt from cutter tooth 1 in process because of the concentration of local stress, so as to cause the fragmentation of cutter tooth 1, cause which to scrap in advance.
The size for putting breach 13 can be consistent, it is also possible to vary, for example, allow and breach 13 is put from cutter tooth 1
11 one end of main cutting edge gradually increase setting to the other end, so allow processing depth of the big I with cutter tooth 1 for putting breach 13
Spend and become big, so as to further reduce contact area of the front cutting edge 12 in cutting.
With reference to shown in Fig. 3, above-mentioned cutter tooth 1 is fixed on handle of a knife 2, which is integrally formed drill bit, and the effect of handle of a knife 2 is to bore
Head clamping, on matched clamping apparatus, is to adapt to different clamping apparatus and can select different types of handle of a knife 2 select
Select, such as handle of a knife 2 can justify any type of handle of a knife 2 such as handle or three bone knobs or hexagonal handle to design, adapt to different dresses for drill bit
The standby installation of sandwiched.
Drill bit when using allows and puts the effective contact area for reducing front cutting edge 12 in cutting of breach 13, so as to avoid
Front cutting edge 12 weares and teares because of friction in drilling process so as to keep enough sharp for a long time so that drilling resistance subtracts significantly
Little, drilling is more easily quick, reduces the probability that firmly crisp material is drilled split, and due to reducing bit weight, reduces
When drilling through a hole, drill bit rubs the number of times of workpiece so that drill life is obviously prolonged.
The above is only preferred implementation of the present utility model, protection domain of the present utility model is not limited merely to above-mentioned
Embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that right
For those skilled in the art, some improvements and modifications under the premise of without departing from this utility model principle,
These improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of drill tip, including cutter tooth (1), the roughly triangular structure setting in the cross section of cutter tooth (1), its end
Main cutting edge (11) is offered, the side of cutter tooth (1) is provided with the front cutting edge (12) being connected with main cutting edge (11), which is special
Levying is：Side on cutter tooth (1) relative to front cutting edge (12) is provided with to allow puts breach (13), and described allowing puts breach (13)
Thickness of the maximum inner diameter not less than cutter tooth (1).
2. a kind of drill tip according to claim 1, is characterized in that：Described allow put breach (13) be provided with multiple.
3. a kind of drill tip according to claim 2, is characterized in that：Described allow put breach (13) with complementation in the form of between
Every the side being distributed on cutter tooth (1) relative to front cutting edge (12).
4. a kind of drill tip according to claim 2, is characterized in that：Described allow put breach (13) quantity be even number.
5. a kind of drill tip according to claim 2, is characterized in that：Described the size for putting breach (13) is allowed from knife
Main cutting edge (11) one end of tooth (1) gradually increases setting to the other end.
6. a kind of drill tip according to claim 1, is characterized in that：Described allow that puts breach (13) to be shaped as circular arc
Or triangle or tetragon.
7. a kind of drill tip according to claim 6, is characterized in that：Described allowing puts the inwall of breach (13) with secondary cutting
The angle formed by sword (12) is more than 90 °.
8. a kind of drill tip according to claim 1, is characterized in that：The outline of cutter tooth (1) is tied in Semen Benincasae shape
Structure is arranged.
9. a kind of drill bit, is characterized in that：Including the drill tip of claim 1-8 any one, handle of a knife (2), institute is also included
It is to justify handle or three bone knobs or hexagonal handle to state handle of a knife (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705750.3U CN206009935U (en) | 2016-06-30 | 2016-06-30 | A kind of drill tip and drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705750.3U CN206009935U (en) | 2016-06-30 | 2016-06-30 | A kind of drill tip and drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206009935U true CN206009935U (en) | 2017-03-15 |
Family
ID=58243594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620705750.3U Active CN206009935U (en) | 2016-06-30 | 2016-06-30 | A kind of drill tip and drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206009935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077766A (en) * | 2016-06-30 | 2016-11-09 | 乐清市线天工具科技有限公司 | A kind of drill tip and drill bit |
-
2016
- 2016-06-30 CN CN201620705750.3U patent/CN206009935U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077766A (en) * | 2016-06-30 | 2016-11-09 | 乐清市线天工具科技有限公司 | A kind of drill tip and drill bit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |