CN207256578U - A kind of hard alloy impact blade and drill hammer - Google Patents
A kind of hard alloy impact blade and drill hammer Download PDFInfo
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- CN207256578U CN207256578U CN201721317659.5U CN201721317659U CN207256578U CN 207256578 U CN207256578 U CN 207256578U CN 201721317659 U CN201721317659 U CN 201721317659U CN 207256578 U CN207256578 U CN 207256578U
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- hard alloy
- blade
- cutting edge
- groove
- impact blade
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of hard alloy impact blade and drill hammer, wherein, at least two grooves are offered on the bottom surface of hard alloy impact blade, groove gets through the forward and backward surface of hard alloy impact blade；The cell wall of groove is minor arc shape or semicircle；Distance at hard alloy impact blade to the most deep position of groove is H, and the length of hard alloy impact blade side surface is L, H≤0.5L；The utility model structure anti-impact force is strong, saves the features such as material.
Description
Technical field
It the utility model is related to a kind of hard alloy impact blade and drill hammer.
Background technology
Chopping bit is mainly used for the perforate on stone or mixed mud.Existing drill hammer in order to improve intensity,
Cutting speed, its drill bit part are a hard alloy impact blades, impact blade by hard alloy and are welded and fixed with boring body
Formed.
Existing hard alloy impact blade is as shown in Figure 1, mainly include hard alloy impact blade, hard alloy impact
The top surface of blade includes two groups of cutting edge groups, and two groups of cutting edge groups 4 is are obliquely installed, in the top surface of hard alloy impact blade
Heart position forms a tip 1, and the bottom surface 2 of hard alloy impact blade is a plane, the extreme lower position of two groups of cutting edge groups
Place is connected to form two sides 3 of hard alloy impact blade with bottom surface respectively.Such a hard alloy impacts blade when mounted,
The bottom surface 2 that blade is impacted by hard alloy is welded on brill, and in order to reduce drill hammer, hard alloy impacts at work
Impact force between blade and brill body, those skilled in the art first can weld one layer of benefit in the bottom surface 2 of hard alloy impact blade
Repay copper sheet, then again by itself and bore body welding, although such a structure reduced on certain Chengdu hard alloy impact blade with
The impact force between body is bored, but it is preferable not enough.
How a kind of hard conjunction that largely reduces hard alloy impact blade and bore body between impact force is designed
Gold impact blade just becomes urgent problem.
The content of the invention
The utility model mainly solving the technical problems that provide a kind of impact force it is small, it is simple in structure, save material it is hard
Matter alloy impacts blade.
Technical solution is used by the utility model solves its technical problem：A kind of hard alloy impacts blade, its
In, at least two grooves are offered on the bottom surface of hard alloy impact blade, groove gets through the forward and backward of hard alloy impact blade
Surface；The cell wall of groove is minor arc shape or semicircle；Distance at bottom surface to the most deep position of groove of hard alloy impact blade
For H, the length of hard alloy impact blade side surface is L, H≤0.5L.
Adopt the structure so that the bottom surface of hard alloy impact blade forms groove, and the shape of groove is minor arc
Shape or semicircle, its effect are similar to arch bridge, be able to will be impacted by minor arc shape or semicircular groove when impact force produces
Power is decomposed, and high degree reduces impact force.Meanwhile the distance at hard alloy impact blade to the most deep position of groove is H,
The length of hard alloy impact blade side surface is L, H≤0.5L, even if such a structure ensures hard alloy, impact blade opens up
Groove, nor affects on overall intensity, while hard alloy impact blade resistance impact force is improved, saves material
Portion influences overall intensity.Since hard alloy impact blade is welded on brill by copper sheet in the prior art, such a structure
It copper sheet deformation can enter in welding process in groove, add the contact area of copper sheet and hard alloy impact blade, carry
The high intensity of hard alloy impact blade welding.Copper sheet usually has compensating action, that is, reduce hard alloy impact blade with
The impact force between body is bored, passes through the design of groove so that the compensating action of copper sheet and the resistance impact force action of groove are mutual
Superposition, reduce further impact force.
Wherein, the groove width that groove is located on bottom surface is D, and the spacing between groove is E, E >=0.4D.
The design of such a structure, prevents the overstocked intensity for causing hard alloy impact blade entirety that groove is set to be lower,
It is further implemented in and ensures to improve the hard alloy impact shock proof effect of blade on the premise of hard alloy impact blade strength.
Wherein, the top surface of hard alloy impact blade includes left cutting edge group and right cutting edge group, and two cutting edge groups are
It is obliquely installed, both are crossed to form tip in the top surface medium position of hard alloy impact blade；Left cutting edge group includes left front
Cutting edge and left back cutting edge, right cutting edge group include cutting edge behind cutting edge before the right side and the right side；One side of left back cutting edge
Wall is connected with the rear surface of hard alloy impact blade, is offered on left back cutting edge and gets through left back cutting edge and hard alloy punching
Hit the dregs guiding groove I of the rear surface of blade；A side wall of cutting edge is connected with the front surface of hard alloy impact blade behind the right side, after right
Offered on cutting edge and get through cutting edge and the dregs guiding groove II of the front surface of hard alloy impact blade behind the right side.
The design of dregs guiding groove I, II causes hard alloy impact blade during the work time（Course of work middle finger hard herein
Alloy impact blade rotation）, the mass rate of emission of crumble is improved, the chip removal performance that hard alloy impacts blade is improved, so as to improve
The heat dissipation performance of impact drill, is conducive to the operating of hard alloy impact blade more high speed.
Wherein, the quantity of dregs guiding groove I and dregs guiding groove II is at least two.
Such a structure further improves the chip removal performance of hard alloy impact blade, improves the mass rate of emission of crumble, improves
Hard alloy impacts the chip removal performance of blade, so as to improve the heat dissipation performance of impact drill, is conducive to hard alloy impact blade more
Increase the operating of speed.
Wherein, the left and right side surface of hard alloy impact blade and bottom surface junction are convex arc.
After such a structure causes hard alloy impact blade to be installed on brill, a left side for reduction hard alloy impact blade,
Impact force between right lateral surface and bottom surface junction and brill body, further increases the shock resistance of drill bit.
Wherein, hard alloy impact blade includes the first matrix and the second matrix, and hard alloy impacts the top surface of blade
On the first matrix, the bottom surface of hard alloy impact blade be located on the second matrix, and the hardness of first matrix is more than the
The hardness of two matrixes；First matrix and the second matrix are by being connected after compressing.
Since the main working portion of hard alloy impact blade is its summit portion, by the way that two kinds of matrixes are pressed into
Type, while hard alloy impact blade chip performance is ensured, can reduce cost.
Wherein, the quantity of the groove is four, and groove is in equidistant arrangement.
Such a structure further saves material, and improves the shock resistance of hard alloy impact blade.
Wherein, groove line centered on the center line of bottom surface is symmetrical set.
Such a structure is easy to process, and anatomic shape, while can further improve the anti-of hard alloy impact blade
Impact property.
Wherein, the bottom surface overall length of hard alloy impact blade is identical with the diameter for boring body.
When existing hard alloy impact blade is that boring body fixes, usual both sides can exceed the length for boring body, i.e. bottom surface
Than bore body diameter it is big, it is such a impact blade welding when, it is necessary to consider both ends leak out bore body part it is identical, could so protect
The apex point of card impact blade is with boring the center of body to be arranged concentrically, if decentraction will scrap.But needed in welding process
Alloy blade is clamped respectively and bores body, it is difficult to ensure that the apex point for impacting blade is in the center for boring body.And adopt
, only need to be by hard alloy impact knives with said structure so that the bottom surface overall length of hard alloy impact blade is identical with the diameter for boring body
The bottom surface both sides of piece are alignd with boring body both sides, then will be clamped at both link positions using clamping tool, and finally be welded,
The apex point and brill for ensuring that alloy blade are in concentric position.Play quick-clamping, the effect of rapid welding.
A kind of drill hammer, including body is bored, bore and storage tank is offered at the top of body, wherein, further include above-mentioned hard and close
Gold impact blade, shape and the hard alloy impact blade fits of storage tank, hard alloy impact blade and storage tank welding are solid
It is fixed；The top surface of hard alloy impact blade is stretched out the apex point for forming drill bit by storage tank.
Using the drill hammer of above-mentioned hard alloy impact blade, have and reduce between hard alloy impact blade and brill body
Impact force, improve hard alloy impact blade and bore the weld strength between body, and save material, reduce cost.
Wherein, the underrun copper sheet of hard alloy impact blade and the slot bottom of storage tank weld.
Welded using copper sheet so that copper sheet softens in welding process to be stretched into groove, increase hard alloy impact blade
Bonding area, intensity, further improved under the action of copper sheet and groove hard alloy impact blade shock resistance.
Brief description of the drawings
Fig. 1 is the structure diagram of the prior art；
Fig. 2 is the front view of the utility model embodiment 1；
Fig. 3 is the top view of the utility model embodiment 1；
Fig. 4 is the front view of the utility model embodiment 2；
Fig. 5 is the front view of the utility model embodiment 3
Fig. 6 is the front view of the utility model embodiment 4；
Fig. 7 is the front view of the utility model embodiment 5；
Fig. 8 is the side view of the utility model embodiment 5；
Fig. 9 is the partial sectional view of the utility model embodiment 6.
Embodiment
Embodiment 1：
Referring to the drawings shown in 2-3, a kind of hard alloy impacts blade, and the top surface of hard alloy impact blade includes including conjunction
Left cutting edge group and right cutting edge group, two cutting edge groups are to be obliquely installed.Two cutting edge groups are in hard alloy impact blade
Top surface medium position is crossed to form tip 11.As shown in Figure 3, left cutting edge group includes left front cutting edge 12 and left back cutting edge
13, right cutting edge group includes cutting edge 15 behind cutting edge 14 before the right side and the right side.Its lowest position of left cutting edge group is closed with hard
Gold impact blade bottom surface 20 be connected to form hard alloy impact blade left side wall 16, its lowest position of right cutting edge group with
The bottom surface 20 of hard alloy impact blade is connected to form the right side wall 17 of hard alloy impact blade.
The upper side wall of left back cutting edge 13 is connected with the rear surface 18 of hard alloy impact blade, is opened on left back cutting edge 13
Equipped with the quantity for getting through left back cutting edge 13 and the dregs guiding groove I 2, herein dregs guiding groove I 2 of the rear surface 18 of hard alloy impact blade
For two.The lower side wall of cutting edge 15 is connected with the front surface 19 of hard alloy impact blade behind the right side, is opened behind the right side on cutting edge 15
Equipped with the number for getting through cutting edge 15 and the dregs guiding groove II 3, herein dregs guiding groove II 3 of the front surface 19 of hard alloy impact blade behind the right side
Measure as two.The slot bottom size of dregs guiding groove I 2 is less than the size of its aperture position, and similarly, dregs guiding groove II 3 is also such.
Four grooves 4 are offered on the bottom surface 20 of hard alloy impact blade, four grooves 4 are straight slot, get through hard
Alloy impacts the forward and backward surface 18 of blade.The cell wall of groove 4 is semicircle, and the bottom surface 20 of hard alloy impact blade is to groove 4
Distance at most deep position is H, and the length of hard alloy impact blade left and right side walls 16,17 is L, and H is less than L.Herein, only
Ensure H≤0.5L, such a structure can ensure the intensity of hard alloy impact blade.The design adopted the structure,
The top surface of blade is impacted to 20 direction of bottom surface in the direction of impact force F being subject to due to hard alloy impact blade for hard alloy,
And since the design of groove 4 make it that the shape of hard alloy impact blade bottom surface 20 is similar to arch bridge, can carry out impact force F
Decompose, so as to reduce impact force.
The groove width that groove 4 is located on bottom surface 20 is D, and the spacing between two neighboring groove 4 is E, if ensure E >=
0.4D, it is possible to ensure the intensity of hard alloy impact blade entirety.
In addition, as long as the quantity of groove 4 can be achieved to reduce the effect of impact force for two or more.Between groove 4
It can use and be equally spaced, the line mirror image centered on the center line of hard alloy impact blade bottom surface 20 can also be used to set.It is recessed
The cell wall shape of groove 4 can also be minor arc.
Embodiment 2：
As shown in figure 4, embodiment 2 and embodiment 1 difference lies in：Hard alloy impacts the left and right side walls 16,17 of blade
With the 20 junction rounded corner 5 of bottom surface of hard alloy impact blade, the fillet 5 fallen is convex arc, and such a structure can cause firmly
Matter alloy impact blade reduces impact force of the hard alloy impact blade to brill body after being welded on brill.
Embodiment 3：
As shown in figure 5, embodiment 3 and embodiment 2 difference lies in：The cell wall shape of groove 4 is minor arc, and hard alloy rushes
The left and right side walls 16,17 and 20 junction of bottom surface of hard alloy impact blade for hitting blade are convex arc, and such a structure can make
Obtain hard alloy impact blade and be welded on brill impact force of the rear reduction hard alloy impact blade to brill body with it.Hard closes herein
The bottom surface overall length F of gold impact blade is identical with the diameter for boring body, and such structure can cause hard alloy impact blade with boring
When body is fixed, the left and right ends of the bottom surface of hard alloy impact blade are alignd with boring body, are welded after clamping, it is possible to are ensured hard
The tip of matter alloy impact blade tip is to be arranged concentrically with the center line for boring body.
Embodiment 4：
As shown in fig. 6, embodiment 4 and embodiment 1 difference lies in：Hard alloy impact blade include the first matrix 6 with
And second matrix 7, the top surface of hard alloy impact blade be located on the first matrix 6, the bottom surface 20 of hard alloy impact blade
In on the second matrix 7, the hardness of the first matrix 6 is more than the hardness of the second matrix 7, and the first matrix 6 and the second matrix 7 pass through compacting
It is connected after shaping.
Embodiment 5：
As Figure 7-8, difference lies in the quantity of groove 4 is two and the cell wall of groove 4 to embodiment 5 with embodiment 1
Shape is minor arc, and the front surface 19 of hard alloy impact blade and the junction of the bottom surface 20 of hard alloy impact blade have
Angle 22, the rear surface 18 of hard alloy impact blade and the junction of the bottom surface 20 of hard alloy impact blade have chamfering 22.
In addition, chamfering 22 can also be replaced with rounded corner.Herein using the design of chamfering 22 or rounded corner, hard conjunction can be improved
Gold impact blade lifts the shock resistance of impact drill with boring the shock resistance after body is fixed.
Embodiment 6：
As shown in figure 9, a kind of drill hammer, including the hard alloy impact blade in body 8 and embodiment 3 is bored, bore body 8
Top offer storage tank 9, hard alloy impact blade is welded in storage tank 9, the top surface of hard alloy impact blade by
The apex point 10 to form drill bit is stretched out in the upper surface for boring body 8.
Hard alloy impact blade is welded in storage tank 9 by copper sheet 21, and copper sheet 21 is extend into groove 4 during welding,
So as to add the bonding area between hard alloy impact 9 slot bottom of blade and storage tank, intensity.Pass through 4 decomposing force of groove
Effect and the compensating action of copper sheet 21, greatly reduce impact force of the hard alloy impact blade to brill body 8.
The bottom surface overall length of hard alloy impact blade is identical with the diameter for boring body so that hard alloy impacts blade with housing
After groove 9 places, as long as the both ends of hard alloy impact blade bottom surface maintain an equal level with boring at left and right sides of body, both are handed over using instrument
Connect and clamped at position, then welded, so that the center line for ensureing apex point and brill body is to be arranged concentrically.
Claims (10)
1. a kind of hard alloy impacts blade, it is characterised in that：At least two are offered on the bottom surface of hard alloy impact blade
Groove, groove get through the forward and backward surface of hard alloy impact blade；The cell wall of groove is minor arc shape or semicircle；Hard alloy
The distance impacted at bottom surface to the most deep position of groove of blade be H, and the length that hard alloy impacts blade side surface is L, H≤
0.5L。
2. hard alloy as claimed in claim 1 impacts blade, it is characterised in that：The groove width that groove is located on bottom surface is D, recessed
Spacing between groove is E, E >=0.4D.
3. hard alloy as claimed in claim 1 or 2 impacts blade, it is characterised in that：Hard alloy impacts the top surface of blade
Including left cutting edge group and right cutting edge group, two cutting edge groups is are obliquely installed, both are on the top of hard alloy impact blade
Middle face position is crossed to form tip；Left cutting edge group includes left front cutting edge and left back cutting edge, and right cutting edge group includes
Cutting edge behind cutting edge and the right side before the right side；One side wall of left back cutting edge is connected with the rear surface of hard alloy impact blade, left
Offered afterwards on cutting edge and get through left back cutting edge and the dregs guiding groove I of the rear surface of hard alloy impact blade；Cutting edge behind the right side
The front surface of a side wall and hard alloy impact blade be connected, offered after right on cutting edge and get through cutting edge and hard behind the right side
The dregs guiding groove II of the front surface of alloy impact blade.
4. hard alloy as claimed in claim 3 impacts blade, it is characterised in that：The quantity of dregs guiding groove I and dregs guiding groove II
It is at least two.
5. hard alloy as claimed in claim 1 or 2 impacts blade, it is characterised in that:Hard alloy impacts the left and right of blade
Side surface and bottom surface junction are convex arc.
6. hard alloy as claimed in claim 1 or 2 impacts blade, it is characterised in that:Hard alloy impact blade includes the
One matrix and the second matrix, the top surface of hard alloy impact blade are located on the first matrix, and hard alloy impacts the bottom of blade
Face is located on the second matrix, and the hardness of first matrix is more than the hardness of the second matrix；First matrix passes through with the second matrix
It is connected after compressing.
7. hard alloy as claimed in claim 1 impacts blade, it is characterised in that:The quantity of the groove is four, groove
In equidistant arrangement.
8. hard alloy as claimed in claim 1 impacts blade, it is characterised in that:Hard alloy impacts the bottom surface overall length of blade
It is identical with the diameter for boring body.
9. a kind of drill hammer, including body is bored, bore and storage tank offered at the top of body, it is characterised in that：Further including right such as will
The hard alloy described in 1-8 any one is asked to impact blade, shape and hard alloy impact blade fits, the hard of storage tank close
Gold impact blade is welded and fixed with storage tank；The top surface of hard alloy impact blade is stretched out the apex point for forming drill bit by storage tank.
A kind of 10. drill hammer as claimed in claim 9, it is characterised in that：Hard alloy impacts the underrun copper of blade
The slot bottom of piece and storage tank welds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017108223355 | 2017-09-13 | ||
| CN201710822335 | 2017-09-13 |
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| Publication Number | Publication Date |
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| CN207256578U true CN207256578U (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721317659.5U Active CN207256578U (en) | 2017-09-13 | 2017-10-13 | A kind of hard alloy impact blade and drill hammer |
| CN201710950813.0A Pending CN107511936A (en) | 2017-09-13 | 2017-10-13 | A kind of hard alloy impact blade and drill hammer |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710950813.0A Pending CN107511936A (en) | 2017-09-13 | 2017-10-13 | A kind of hard alloy impact blade and drill hammer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511936A (en) * | 2017-09-13 | 2017-12-26 | 乐清大勇新工具有限公司 | A kind of hard alloy impact blade and drill hammer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6270297B1 (en) * | 2000-01-28 | 2001-08-07 | Ati Properties, Inc. | Cutting tools and drill inserts with chip control geometry |
| US7287610B2 (en) * | 2004-09-29 | 2007-10-30 | Smith International, Inc. | Cutting elements and bits incorporating the same |
| DE102010045388A1 (en) * | 2010-09-15 | 2012-03-15 | Irwin Industrial Tools Gmbh | Carbide head for a tool for processing solid material |
| CN202667743U (en) * | 2012-07-31 | 2013-01-16 | 乐清市南方硬质合金有限公司 | Blade of impact drill |
| CN203830801U (en) * | 2014-05-13 | 2014-09-17 | 浙江浙南合金制造有限公司 | Impact drill piece |
| CN203830800U (en) * | 2014-05-13 | 2014-09-17 | 浙江浙南合金制造有限公司 | Percussion drilling sheet |
| CN204584364U (en) * | 2015-05-08 | 2015-08-26 | 浙江浙南合金制造有限公司 | A kind of cross percussion drilling plate |
| CN206263310U (en) * | 2016-11-25 | 2017-06-20 | 浙江鸿峰硬质合金有限公司 | A kind of carbide drill piece and drill bit |
| CN207256578U (en) * | 2017-09-13 | 2018-04-20 | 乐清大勇新工具有限公司 | A kind of hard alloy impact blade and drill hammer |
-
2017
- 2017-10-13 CN CN201721317659.5U patent/CN207256578U/en active Active
- 2017-10-13 CN CN201710950813.0A patent/CN107511936A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511936A (en) * | 2017-09-13 | 2017-12-26 | 乐清大勇新工具有限公司 | A kind of hard alloy impact blade and drill hammer |
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| CN107511936A (en) | 2017-12-26 |
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