CN207105307U - Cement drill bit - Google Patents
Cement drill bit Download PDFInfo
- Publication number
- CN207105307U CN207105307U CN201721072976.5U CN201721072976U CN207105307U CN 207105307 U CN207105307 U CN 207105307U CN 201721072976 U CN201721072976 U CN 201721072976U CN 207105307 U CN207105307 U CN 207105307U
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- cutting
- rotary
- cut portion
- projection
- drill bit
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Abstract
A kind of cement drill bit, include a drill body and a cutting blade block.The drill body includes several chip areas relative to a blade tip apex angle separately.The cutting blade block includes several rotary-cut portions for corresponding respectively to the chip area.Each rotary-cut portion forms several cutting projections in the different radial distances along its cutting blade crestal line, and the cutting projection in the cutting projection in each rotary-cut portion and adjacent rotary-cut portion relative to the blade tip summit by it is annular it is asymmetric in a manner of arrange.Whereby, cement drill bit of the present utility model can be significantly increased cutting force and can reach fifty-fifty cut on different radial distances the effect of.
Description
Technical field
A kind of drill bit is the utility model is related to, more particularly to a kind of cement drill bit.
Background technology
In order to be drilled to concrete or stone material etc., special drill bit need to be installed in rotation hammer, drill bit is applied simultaneously
The vibration hitting power and rotary torsion of axis direction, to be drilled.
Refering to Fig. 1, for example, Chinese CN204552619U issued patents case discloses a kind of drill bit, it includes joint 13
And bit body 12.The end of the bit body 12 is connected with the joint 13.The front end of the bit body 12 is made up of three bit faces 11.
In addition, deslagging inclined-plane 15 is provided between the bit face 11, and each deslagging inclined-plane 15 is provided with deslagging helicla flute 16.Furthermore
The end of the deslagging helicla flute 16 is provided with mud hole 17.
The bit face 11 is provided with wear-resistant alloy layer 14, and its height is higher than the height of the bit face 11.The resistance to break-in
Layer gold 14 has a salient point 141 for being located at circle centre position, and three salient points being respectively symmetrically distributed in the bit face 11
142.However, just because three salient points 142 are to be located at respectively in the bit face 11, and be right relative to center of circle annular
Claim, and three salient points 142 and the spacing being located between the salient point 141 of circle centre position were very big, so the existing drill bit is carried out
When rotary motion to concrete or stone material etc. to drill, cutting situation and inequality in different radial distances.Therefore, having must
Seek solution.
Utility model content
The purpose of this utility model, which is to provide, a kind of to be significantly increased cutting force and can reach in different radial distances
On the cement drill bit that fifty-fifty cuts.
The utility model cement drill bit, include a drill body and a cutting blade block.The drill body includes several
Relative to the chip area of a blade tip apex angle separately.The cutting blade block includes several rotations for corresponding respectively to the chip area
Cut portion.Each rotary-cut portion forms several cutting projections in the different radial distances along its cutting blade crestal line, and each
The cutting projection in rotary-cut portion and the cutting projection in adjacent rotary-cut portion are asymmetric with annular relative to the blade tip summit
Mode arrange.
The utility model cement drill bit, the number of the chip area is three, and the quantity in the rotary-cut portion is three.
The utility model cement drill bit, the starting point of each cutting blade crestal line are located at the blade tip summit, each rotary-cut portion tool
There is one to be connected in the major opposing side of the terminal of corresponding cutting blade crestal line and one are in a manner of fillet and the major opposing side is adjacent
Secondary side.
There is one to be used to set the projection of the cutting projection to set for the utility model cement drill bit, each rotary-cut portion
Projection setting face corresponding to face, an adjoining simultaneously defines the cutting face of corresponding cutting blade crestal line with the projection setting face jointly,
And a dust lead inclined-plane interfaced between the projection setting face in the cutting face and adjacent rotary-cut portion, the cutting face with it is corresponding
A dregs guiding groove for being used to sleekly for chip to be expelled to corresponding chip area is defined jointly in dust lead inclined-plane.
The utility model cement drill bit, each rotary-cut portion form three along its cutting blade crestal line and are located at different radial distances
On cutting projection.
The utility model cement drill bit, each rotary-cut portion form two along its cutting blade crestal line and are located at different radial distances
On cutting projection.
The beneficial effects of the utility model are：When carrying out brill using the cutting projection as principal contact surfaces and attacking, be with
The mode of multiple spot cutting is cut, so cutting force can be significantly increased, and can reach on different radial distances fifty-fifty
The effect of cutting.
Brief description of the drawings
Fig. 1 is a schematic perspective view, illustrates the drill bit disclosed in existing Chinese CN204552619U issued patents cases；
Fig. 2 is side view diagram, illustrates the embodiment of the utility model cement drill bit；
Fig. 3 is an enlarged side view, illustrates the cutting blade block in the embodiment；
Fig. 4 is a upward view, illustrates the embodiment；And
Fig. 5 is a upward view, illustrates the change case of the embodiment.
Embodiment
Below in conjunction with the accompanying drawings and the utility model is described in detail embodiment.
Refering to Fig. 2,3,4, the embodiment of the utility model cement drill bit includes a drill body 2 and a cutting blade block
3.The drill body 2 includes several chip areas 21 relative to the angular intervals of blade tip summit 30.The cutting blade block 3 includes number
The individual rotary-cut portion 31 for corresponding respectively to the chip area 21.As shown in Fig. 2 in the present embodiment, the number of the chip area 21
For three, and the quantity in the rotary-cut portion 31 is three.
As shown in Figure 3,4, in the present embodiment, each rotary-cut portion 31 forms three along its cutting blade crestal line 310 and is located at
Half arc milling projection 3111,3112,3113 in different radial distances.For example, for each rotary-cut portion 31, it is cut
It is nearest apart from the blade tip summit 30 to cut projection 3111, cutting projection 3113 is farthest apart from the blade tip summit 30, and cuts projection
3112 between the cutting projection 3111 and the cutting projection 3113 between the two.
As shown in figure 4, of the present utility model be characterized mainly in that, the cutting projection 3111 in each rotary-cut portion 31,
3112nd, 3113 with the cutting projection 3111,3112,3113 in adjacent rotary-cut portion 31 relative to the blade tip summit 30, be with
The asymmetric mode of annular arranges.For example, as ise apparent from FIG. 4, the cutting projection 3111 in the rotary-cut portion 31 of lower left is with cutting
Projection 3112 is cut between the two to be contacting one another, and the cutting projection 3111 in the rotary-cut portion 31 of lower right and top is convex with cutting
Block 3112 between the two then each other and not in contact with and a separately spacing, that is to say, that the cutting projection 3111 in three rotary-cut portions 31,
3112nd, 3113 are arranged in a manner of annular is asymmetric.Thus, when with the cutting projection 3111,3112,3113 mainly to connect
Contacting surface carries out brill when attacking, and is to be cut in a manner of multiple spot is cut, so cutting force can be significantly increased, and can reach in difference
Radial distance on the effect of fifty-fifty cutting.
In the present embodiment, there is one to be used to set the cutting projection 3111,3112,3113 in each rotary-cut portion 31
The 314, adjoinings of projection setting face corresponding to projection setting face 314 and defined jointly with the projection setting face 314 corresponding
Cutting blade crestal line 310 cutting face 315, and a projection interfaced with the cutting face 315 and adjacent rotary-cut portion 31 sets
Dust lead inclined-plane 316 between face 314.For each rotary-cut portion 31, its cutting face 315 is defined jointly with dust lead inclined-plane 316
Go out a dregs guiding groove 317 for being used to sleekly for chip to be expelled to corresponding chip area 21.
In addition, the starting point of each cutting blade crestal line 310 is located at the blade tip summit 30.Each rotary-cut portion 31 also has one
It is connected the major opposing side 312 in the terminal of corresponding cutting blade crestal line 310 and a secondary side adjacent with the major opposing side 312
313.In the present embodiment, the secondary side 313 is adjacent with fillet r method and corresponding major opposing side 312.Due to fillet R with
Contact resistance between hole wall is smaller, thus the utility model can also have drilling when cutting it is relatively smooth thus can be lifted drilling effect
The advantages of rate.
Refering to Fig. 5, in a change case of the present embodiment, each rotary-cut portion 31 is only formed along cutting blade crestal line 310
Two cutting projections in different radial distances, including the cutting projection 3113 and one apart from the blade tip summit 30 farther out
The individual cutting projection 3114 nearer apart from the blade tip summit 30.Fig. 5 is shown in the cutting projection 3114 in three rotary-cut portions 31
In, cutting projection 3114 and the blade tip summit 30 in the rotary-cut portion 31 of lower left it is closest, the rotary-cut portion 31 of lower right
Cutting projection 3114 and the distance on the blade tip summit 30 are taken second place, and the cutting projection 3114 in the rotary-cut portion 31 of top and the blade tip top
The distance of point 30 is then farthest.That is, the cutting projection 3113,3114 in three rotary-cut portions 31 is equally not right with annular
The mode of title arranges, thus, when being that principal contact surfaces carry out brill and attacked with the cutting projection 3113,3114, cut with multiple spot
The mode cut is cut, so cutting force can be significantly increased, and can reach what is fifty-fifty cut on different radial distances
Effect.
In summary, when the utility model is carried out brill as principal contact surfaces and attacked using the cutting projection, cut with multiple spot
Mode cut, so cutting force can be significantly increased, and can reach the work(fifty-fifty cut on different radial distances
Effect, so the purpose of this utility model can be reached really.
Claims (6)
1. a kind of cement drill bit, comprising a drill body and a cutting blade block, the drill body includes several relative to one
The chip area of individual blade tip apex angle separately, it is characterised in that：The cutting blade block corresponds respectively to the chip area including several
Rotary-cut portion, each rotary-cut portion forms several cutting projections in the different radial distances along its cutting blade crestal line, and every
The cutting projection in the cutting projection in one rotary-cut portion and adjacent rotary-cut portion relative to the blade tip summit with annular not
Symmetrical mode arranges.
2. cement drill bit according to claim 1, it is characterised in that：The number of the chip area is three, and the rotation
The quantity for cutting portion is three.
3. cement drill bit according to claim 1, it is characterised in that：The starting point of each cutting blade crestal line is located at the blade tip top
Point, each rotary-cut portion have one be connected in the major opposing side of the terminal of corresponding cutting blade crestal line and one in a manner of fillet with
The adjacent secondary side of the major opposing side.
4. cement drill bit according to claim 1, it is characterised in that：Each rotary-cut portion is described for setting with one
Cut the projection setting face of projection, projection setting face corresponding to an adjoining and defined jointly with the projection setting face corresponding
The cutting face of cutting blade crestal line, and a dust lead interfaced between the projection setting face in the cutting face and adjacent rotary-cut portion are oblique
Face, the cutting face define one with corresponding dust lead inclined-plane and are used to sleekly for chip to be expelled to leading for corresponding chip area jointly
Consider groove to be worth doing.
5. cement drill bit according to claim 1, it is characterised in that：Each rotary-cut portion forms three along its cutting blade crestal line
The individual cutting projection in different radial distances.
6. cement drill bit according to claim 1, it is characterised in that：Each rotary-cut portion forms two along its cutting blade crestal line
The individual cutting projection in different radial distances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721072976.5U CN207105307U (en) | 2017-08-25 | 2017-08-25 | Cement drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721072976.5U CN207105307U (en) | 2017-08-25 | 2017-08-25 | Cement drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207105307U true CN207105307U (en) | 2018-03-16 |
Family
ID=61577770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721072976.5U Active CN207105307U (en) | 2017-08-25 | 2017-08-25 | Cement drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207105307U (en) |
-
2017
- 2017-08-25 CN CN201721072976.5U patent/CN207105307U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |