CN203804285U - Environment-friendly thin-walled drill bit - Google Patents
Environment-friendly thin-walled drill bit Download PDFInfo
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- CN203804285U CN203804285U CN201420225652.0U CN201420225652U CN203804285U CN 203804285 U CN203804285 U CN 203804285U CN 201420225652 U CN201420225652 U CN 201420225652U CN 203804285 U CN203804285 U CN 203804285U
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Abstract
The utility model relates to an environment-friendly thin-walled drill bit, and belongs to the technical field of hardware tools and construction machinery. The environment-friendly thin-walled drill bit comprises a tool bit (1), a tool (2), an arbor (3) and a shank (4). Blades of the tool bit (1) are uniformly distributed along the circular outer edge of an end surface of the tool (2) and are in central symmetry with one another around the central point of a distribution circle of the blades, the shapes of the blades are different from one another, and accordingly the hole drilling operation efficiency can be greatly improved. Chip conveying sheets (21) of the tool (2) are spirally distributed so that jamming of a drill tool can be effectively prevented. Airflow lead-in pipes (32) of the arbor (3) and the axis of the tool (2) intersect with one another at the rear of the shank (4), so that air inlet pressures can be enlarged, and backflow of cooling water can be prevented. The environment-friendly thin-walled drill bit has the advantages that airflow is led into the environment-friendly thin-walled drill bit on the basis of the existing drill bit of a water drill, accordingly, water resources can be saved, pollution due to muddy water can be prevented, and the chip removing and hole drilling operation efficiency can be improved; the environment-friendly thin-walled drill bit can be arranged in the existing water drill, can be additionally provided with a dust collection device, also can be only provided with air or water in a lead-in manner, and accordingly is wide in application range.
Description
Technical field
The utility model relates to drilling tool technology, and the especially a kind of thin drilling bit that can avoid environmental pollution belongs to hardware & tools and building machinery technical field.
Background technology
In the time of finishing or construction, bore larger-diameter hole on brick or concrete wall surface time, generally adopt at present water drilling.Water drilling utilizes the cooling drill bit of water, can effectively avoid dust pollution; But in work progress, can flash by water droplet, occur mud pollution.Existing water drilling is installed diamond thin-wall drill bit, mainly relies on the machining to concrete, stone and reinforcing bar, and compared with percussion drill or electric hammer, process velocity is slow, and efficiency is lower.When concrete quality is not high, while coming off handstone or steel bar end, easily there is bit freezing phenomenon, when serious, can burn out motor.The main failure forms of diamond thin-wall drill bit is bit wear and bit body distortion.In the time that bit wear is serious, between drill bit cylinder inwall and core, easily because foreign material or core burr block, causes and get core difficulty.
In order effectively to avoid bit freezing, people conduct in-depth research, a kind of drill bit (patent No.: 201310064049.9), with the outer conveyor screw being made up of hard material particle, can avoid the drill bit causing by the compression of drilling cuttings to block on the external cylindrical surface of columniform bit body has been proposed.
In order to prevent environmental pollution and automatically to remove smear metal, people have also proposed a kind of drill bit (patent No.: 201180019397.3), inside, with dust suction path, can attract smear metal the base end side of dust suction path from drill bit end, discharge from the suction device being attached thereto.Also there is a kind of dust-free electric drill device (patent No.: 200520120447.9), comprise telescopic component and dust exhaust apparatus, be installed on percussion drill or electric hammer synchronous working, by dust respirable dust device.These devices can be collected dust, but in operating process, dust exhaust apparatus, by filter medium exhaust, still can be discharged a large amount of fine dust granules, contaminated air; In addition in the time that dust is cleared up, still can dust from flying, there is pollution problem.
In order effectively to avoid dust pollution, saving water resource, improves chip removal and bore operation efficiency, prevents bit freezing, the utility model proposes a kind of environmental protection thin drilling bit.
Summary of the invention
The purpose of this utility model is protection of the environment, on current water drilling drill bit basis, introduces air-flow, saving water resource; Improve chip removal and bore operation efficiency, prevent bit freezing.The utility model can pack existing water drilling into and install dust exhaust apparatus additional, also can be installed on water drilling or electric hammer with dust exhaust apparatus.
Drill bit of the present utility model is a kind of cutting tool, comprises cutter head (1), cutter hub (2), cutter shaft (3) and handle of a knife (4), as represented in Fig. 1.Described cutter head (1) is not less than 4 even number blade and forms by embedding cutter hub (2) quantity.Described blade adopts hard material, is uniformly distributed, and is centrosymmetric about its circle central point that distributes along the circular outer of cutter hub (2) end face, and the shape difference of adjacent knife blades, to improve bore operation efficiency, as shown in Figure 2.Described blade is uniformly distributed along the circular outer of cutter hub (2) end face, guarantees the utility model stress equalization, and centering accurately; The shape difference of adjacent knife blades, can improve bore operation efficiency greatly.Described blade is with two main cutting edges.The different preferred main cutting edge length of shape of described adjacent knife blades is different with angle.In Fig. 2, blade (1A) is centrosymmetric about its circle central point that distributes with blade (1A'), and blade (1B) is also centrosymmetric about its circle central point that distributes with blade (1B'); Blade (1A) is adjacent with blade (1B), shape difference.The shape that the view that blade (1A) distributes circle circumferencial direction at it is expressed is as represented in Fig. 3, the shape that the view that blade (1B) distributes circle circumferencial direction at it is expressed is as represented in Fig. 4, Fig. 5 expresses the another kind of shape of blade, is another embodiment of blade.Described hard material at least comprises carbide alloy, cubic boron nitride or industrial ceramics, and preferably powder metallurgical technique sintering forms.In engineering practice, test and show: the variform blade distribution design of adjacent knife blades, compared with the identical distribution design of adjacent knife blades structure, can produce severe impact effect to concrete at the circumferencial direction of cutter hub (2) end face outer, greatly improve bore operation efficiency.Described percussion is better for fragile material effects such as cement, blue bricks, stones; A little for toughness material weak effects such as bar reinforcement, finer wire and animal and plant fibers.
Described cutter hub (2) is hollow cylinder structure, and outer surface is with smear metal conveying sheet (21), and front end connects cutter head (1), and rear end connects cutter shaft (3).Described smear metal conveying sheet (21) distributes along helix, is made up of hard material particle, adopts bridging agent bonding or be welded on the outer surface of cutter hub (2), and reinforcing bar and stone are had to stronger cutting force, can prevent bit freezing.The blade of described cutter head (1), embeds and is welded in the groove that is distributed in cutter hub (2) front end face.
Described cutter shaft (3) is with front seal groove (31), the gentle stream ingress pipe of rear seal groove (33) (32), and front end connects cutter hub (2), and rear end connects handle of a knife (4).Described air-flow ingress pipe (32) is with the axes intersect of cutter hub (2) in handle of a knife (4) rear portion, and its angle is greater than 2
°, be less than 45
°, can utilize the centrifugal force that rotation produces to increase admission pressure, avoid cooling water to flow backwards.Described front seal groove (31) is connected with the sealing ring of dust exhaust apparatus exhaust outlet respectively with rear seal groove (33), and close fit, in case leak-stopping gas.
Described handle of a knife (4), with fine thread, is known water drilling interface, can pack existing water drilling into and install dust exhaust apparatus additional, also can be installed on water drilling or electric hammer with dust exhaust apparatus.
The beneficial effects of the utility model are: the blade of described cutter head (1) is uniformly distributed along the circular outer of cutter hub (2) end face, and are centrosymmetric about its circle center that distributes, the structure difference of adjacent knife blades.The distribution mode design of this blade, can produce severe impact to armored concrete at the circumferencial direction of the cylindrical of cutter hub (2) end face, compared with the diamond thin-wall drill bit of existing water drilling, can greatly improve bore operation efficiency.Described cutter hub (2) outer surface, with the smear metal conveying sheet (21) distributing along helix, has stronger cutting force to reinforcing bar and stone, can effectively prevent bit freezing.The air-flow ingress pipe (32) of described cutter shaft (3) in handle of a knife (4) rear portion, can utilize the centrifugal force that rotation produces to increase admission pressure with the axes intersect of cutter hub (2), avoids cooling water to flow backwards.Compared with the diamond thin-wall drill bit of existing water drilling, the utility model can saving water resource, effectively avoids mud pollution, and has improved chip removal and bore operation efficiency.The utility model can pack existing water drilling into and install dust exhaust apparatus additional, can be installed on water drilling or electric hammer with dust exhaust apparatus; Also can only introduce air or water, have wide range of applications.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present utility model;
Fig. 2 is left view of the present utility model shown in Fig. 1;
Fig. 3 is the view of blade (1A) at its circle circumferencial direction that distributes;
Fig. 4 is the view of blade (1B) at its circle circumferencial direction that distributes;
Fig. 5 is another embodiment of blade shapes.
Description of reference numerals: 1 cutter head; 2 cutter hubs; 3 cutter shafts; 4 handle of a knifes; 21 smear metal conveying sheets; 31 front seal grooves; 32 air-flow ingress pipes; 33 rear seal grooves.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model is described in detail.
Fig. 1 is general structure schematic diagram of the present utility model, comprises cutter head (1), cutter hub (2), cutter shaft (3) and handle of a knife (4).The blade of described cutter head (1) is made up of hard material, and preferably powder metallurgical technique sintering forms.The blade of described cutter head (1) and cutter hub (2) be connected preferred melting welding or soldering processes, preferably at cutter hub (2) front end face fluting with in the measure of two kinds of techniques of blade side fluting use, to improve bonding strength.The notching construction of described blade side, as Fig. 3, Fig. 4 and Fig. 5 represented; Groove depth is not more than 1/4th of blade thickness.
Fig. 2 is left view of the present utility model shown in Fig. 1, expresses a kind of blade of the present utility model and distributed, and be the embodiment that drill tip described in the utility model distributes.The knife number of described cutter head (1) is even number, is not less than 4, and the stress equalization degree of Main Basis drill bit described in the utility model and centering precision are determined, along with the diameter of cutter hub (2) increases and increases.Described blade is uniformly distributed along the circular outer of cutter hub (2) end face, the shape difference of adjacent knife blades.The different preferred main cutting edge length of shape of described adjacent knife blades is different with angle.The blade of an embodiment of composition the utility model at least has 2 kinds of shapes, and the quantity of every kind of shape blade is not less than 2.Blade (1A) is centrosymmetric about its circle central point that distributes with blade (1A'), and shape is identical.Blade (1B) is also centrosymmetric about its circle central point that distributes with blade (1B'), and shape is identical.
Fig. 3 is the view of blade (1A) at its circle circumferencial direction that distributes; Fig. 4 is the view of blade (1B) at its circle circumferencial direction that distributes.Fig. 3 and Fig. 4 have expressed respectively blade (1A) and blade (1B) distributes and justifies the visible shape of circumferencial direction at it.Fig. 5 has expressed the another kind of shape of blade at its circle circumferencial direction that distributes, and is another embodiment of blade shapes.
Described cutter hub (2) is hollow cylinder structure, its blank preferable alloy tubing; The preferred Milling Process technique fluting of front end, to embed and to weld the blade of described composition cutter head (1); Rear end preferred weld technique is connected with cutter shaft (3).Described cutter hub (2) outer surface with smear metal conveying sheet (21) formed by hard material particle, preferably bridging agent is bonding or be welded on the outer surface of cutter hub (2).
The blank preferable alloy sheet material of described cutter shaft (3), preferred weld technique is connected with air-flow ingress pipe (32) and handle of a knife (4).The front seal groove (31) of described cutter shaft (3) and rear seal groove (33) be molding cutter preferably, and preferably turning and grinding technique are shaped.Described air-flow ingress pipe (32) preferable alloy cutting technology is shaped, its blank preferable alloy tubing.
Described handle of a knife (4) is with fine thread, its blank preferable alloy tubing, preferably tapping and Milling Process process forming.
Meeting under the condition of structure of the present utility model and performance requirement, changing material and processing technology, all within protection domain of the present utility model.
Claims (3)
1. an environmental protection thin drilling bit, comprises cutter head (1), cutter hub (2), cutter shaft (3) and handle of a knife (4), it is characterized in that described cutter head (1) is not less than 4 even number blade by quantity and forms; Described blade is uniformly distributed along the circular outer of cutter hub (2) end face, and is centrosymmetric about its circle central point that distributes, and the shape difference of adjacent knife blades, to improve bore operation efficiency.
2. according to a kind of environmental protection thin drilling bit claimed in claim 1, it is characterized in that described cutter hub (2) is for hollow cylinder structure, outer surface is with smear metal conveying sheet (21); Described smear metal conveying sheet (21) distributes along helix, can prevent bit freezing.
3. according to a kind of environmental protection thin drilling bit claimed in claim 1, it is characterized in that described cutter shaft (3) is with front seal groove (31), the gentle stream ingress pipe of rear seal groove (33) (32); Described air-flow ingress pipe (32) in handle of a knife (4) rear portion, can increase admission pressure with the axes intersect of cutter hub (2), avoids cooling water to flow backwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225652.0U CN203804285U (en) | 2014-05-05 | 2014-05-05 | Environment-friendly thin-walled drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225652.0U CN203804285U (en) | 2014-05-05 | 2014-05-05 | Environment-friendly thin-walled drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804285U true CN203804285U (en) | 2014-09-03 |
Family
ID=51443096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225652.0U Expired - Fee Related CN203804285U (en) | 2014-05-05 | 2014-05-05 | Environment-friendly thin-walled drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804285U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551125A (en) * | 2014-12-19 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Quick-cooling drill bit |
| CN111451538A (en) * | 2020-04-02 | 2020-07-28 | 福建新峰科技有限公司 | Automatic chip removal deep hole precision pore-forming system |
-
2014
- 2014-05-05 CN CN201420225652.0U patent/CN203804285U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551125A (en) * | 2014-12-19 | 2015-04-29 | 苏州欧美克合金工具有限公司 | Quick-cooling drill bit |
| CN111451538A (en) * | 2020-04-02 | 2020-07-28 | 福建新峰科技有限公司 | Automatic chip removal deep hole precision pore-forming system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 264005 School of engineering, No. 191 Binhai Road, Laishan District, Shandong, Yantai Patentee after: Shandong Institute of Business And Technology Address before: 264005 Binhai Road, Laishan District, Shandong, China, No. 191, No. Patentee before: Shandong Institute of Business And Technology |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150505 |
|
| EXPY | Termination of patent right or utility model |