CN201609779U - Dedicated drill bit for taper hole - Google Patents
Dedicated drill bit for taper hole Download PDFInfo
- Publication number
- CN201609779U CN201609779U CN2009202150760U CN200920215076U CN201609779U CN 201609779 U CN201609779 U CN 201609779U CN 2009202150760 U CN2009202150760 U CN 2009202150760U CN 200920215076 U CN200920215076 U CN 200920215076U CN 201609779 U CN201609779 U CN 201609779U
- Authority
- CN
- China
- Prior art keywords
- taper hole
- drill bit
- drillstock
- steel
- cutting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a dedicated drill bit for a taper hole, and relates to a cutter used for drilling. The dedicated drill bit for the taper hole comprises a drillstock (1), a cutting surface (2), a positioning ring (6) and a flexible limit ring (5), wherein, the drillstock (1) and the cutting surface (2) are made into a whole body; the drillstock (1) is sheathed with the positioning ring (6) and the flexible limit ring (5) which are also made into a whole body; an included angle formed by the outer extended line of the cutting surface (2) and the axis of the drill bit is an acute angle; and a semi-spiral knife edge (4) provided with a tip (7) is embedded in the cutting surface (2). The angle of the included angle formed by the outer extended line of the cutting surface and the axis of the drill bit ranges from 5 to 30 degrees. Sawteeth 3 or no sawtooth is formed on the knife edge (4). The drillstock (1) is made of steel 45, or steel 40Cr, or steel 9CrSi, and the knife edge (4) made of hard alloy steel is embedded in the cutting surface (2). The positioning ring 6 and the flexible limit ring (5) are made of one of rubbers, plastics and rubber-plastic materials. Taper holes that are drilled by the dedicated drill bit for the taper hole are applied to anchoring technology and embedded steel bars technology, so that the anchoring strength and the embedded steel bars firmness are improved greatly. The dedicated drill bit for the taper hole is especially suitable for architecture installation industry and metalworking industry.
Description
Technical field
The utility model relates to the cutter that is used to hole, and specifically, relates to drill bit.
Background technology
As everyone knows, drill bit is one of people's cutter of being used for holing, and many machinings, construction and installation, geological prospecting, coal mining all need drill bit.In order to adapt to the needs of various industry borings, people have designed some shapes drill bit different with purposes.Having of correlation technique application Chinese patent: No. 87205082 " Three teeth drill ", No. 98208074.3 " Special drilling bit ", No. 99216924.0 " special-shaped bored concrete pile vibrating, jetting, extruding and boring becomes drill ", No. 02276317.1 " a kind of Deep hole drill ", No. 200420073235.5 " irregularly-shaped hole drill bit ", No. 200420061503.1 " a kind of reaming is with boring flower ", No. 200820159287.2 " a kind of special-shaped alloy bits " etc., these patented technologies all have certain effect, but do not see the drill bit that can get out the fishtail taper hole.
Summary of the invention
The purpose of this utility model provides a kind of taper hole target drill, uses this drill bit can leggiero straight hole be drilled to the fishtail taper hole, and the resistance to plucking that this taper hole can improve back anchoring or bar planting goes out intensity.
The taper hole target drill that the designer provides is made up of drillstock, sword face, centring ring and flexible spacing ring, and drillstock, sword face are made as integral body; Centring ring and flexible stop also are made as integral body, are enclosed within on the drillstock; The axis angle outer along the line and drill bit of sword face is an acute angle, and the sword face studs with the knife edge of semi-spiral shape, and there is blade tip on the top.
The outer acute angle angle along the line and the drill axis angle of above-mentioned sword face is 5 °～30 °.
Above-mentioned knife edge has or does not have sawtooth, and the sword face that has sawtooth can get out with stupefied taper hole, is used for anchoring or bar planting and can improves fastening strength.
The drillstock of above-mentioned taper hole target drill can be made with No. 45 steel, 40Cr steel or 9CrSi steel; Above-mentioned sword face edge Yg11 hard alloy steel knife edge.
Above-mentioned centring ring and flexible spacing ring are with a kind of the making in rubber, plastics, the rubber-plastics material.
The using method and the operation principle of taper hole target drill are: when one of the oblique insertion of this drill bit has been drilled in the straight hole of merit, flexible stop slides into the aperture, centring ring just in time is fixed on drillstock in the hole in the aperture, and the center of circle of the axle center of drill bit and straight hole port is limited on the same axis; When drill bit rotates at a high speed, the axle center of drill bit certainly leads to centripetal force, drill bit can enlarge the straight hole hole wall gradually along the bottom, a straight hole counterboring is become a very regular fishtail taper hole that from shallow to deep enlarges gradually, and is not only that bottom with the hole enlarges a little; With the taper hole that the taper hole target drill is drilled to, base diameter can be greater than 2 times of mouth diameters.The tapering of taper hole can change because of the change in depth of taper hole; The hole is shallow, and the conical taper in its hole is just big; Hole depth, the conical taper in its hole is just little.
The taper hole that taper hole target drill of the present utility model gets out is applied in anchorage technology and bar planting is technical, can increase substantially the firmness of anchoring strength and bar planting.Being specially adapted to construction and installation and metal processing industry uses.
Description of drawings
Accompanying drawing 1 is the structural representation of taper hole target drill of the present utility model, and Fig. 2 is the taper hole target drill schematic diagram that has sawtooth.1 is drilling rod among the figure, and 2 is the sword face, and 3 is sawtooth, and 4 is knife edge, and 5 is flexible spacing ring, and 6 is centring ring, and 7 is blade tip.
The specific embodiment
Embodiment 1: as the taper hole target drill of Fig. 2, it is made up of drillstock 1, sword face 2, centring ring 6 and flexible spacing ring 5, and drillstock 1, sword face 2 are made as integral body; Centring ring 6 and flexible stop 5 also are made as integral body, are enclosed within on the drillstock 1; The axis angle outer along the line and drill bit of sword face 2 is 20 °; Sword face 2 studs with the knife edge 4 of semi-spiral shape, and the top is a blade tip 7.Knife edge 4 has sawtooth 3, makes with the Yg11 alloy steel products.Drillstock 1 diameter 20mm, drill bit length overall 220mm, the length overall 128mm of drill bit, the long 80mm of the hypotenuse of knife edge 4.Drillstock 1 usefulness 9CrSi structural alloy steel is made, and sword face 2 studs with Yg11 hard alloy steel knife edge 4.Centring ring 6 and flexible spacing ring 5 usefulness rubber are made.
Embodiment 2: as the taper hole target drill of Fig. 1, knife edge 4 does not have sawtooth, and drillstock 1 usefulness 40Cr steel is made, and centring ring 6 and flexible spacing ring 5 usefulness rubber-plastics materials are made.All the other are with embodiment 1.
Claims (5)
1. taper hole target drill is characterized in that it is made up of drillstock (1), sword face (2), centring ring (6) and flexible spacing ring (5), and drillstock (1), sword face (2) are made as integral body; Centring ring (6) and flexible stop (5) also are made as integral body, are enclosed within on the drillstock (1); The axis angle outer along the line and drill bit of sword face (2) is an acute angle; Sword face (2) studs with the knife edge (4) of semi-spiral shape, and the top is blade tip (7).
2. taper hole target drill as claimed in claim 1 is characterized in that the outer acute angle angle along the line and the drill axis angle of described sword face is 5 °～30 °.
3. taper hole target drill as claimed in claim 1 is characterized in that described knife edge (4) has or do not have sawtooth (3).
4. taper hole target drill as claimed in claim 1 is characterized in that described drillstock (1) makes sword face (2) carbide inserts steel knife edge (4) with No. 45 steel or 40Cr steel or 9CrSi steel.
5. taper hole target drill as claimed in claim 1 is characterized in that described centring ring (6) and flexible spacing ring (5) are with a kind of the making in rubber, plastics, the rubber-plastics material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202150760U CN201609779U (en) | 2009-12-31 | 2009-12-31 | Dedicated drill bit for taper hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202150760U CN201609779U (en) | 2009-12-31 | 2009-12-31 | Dedicated drill bit for taper hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201609779U true CN201609779U (en) | 2010-10-20 |
Family
ID=42960412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202150760U Expired - Fee Related CN201609779U (en) | 2009-12-31 | 2009-12-31 | Dedicated drill bit for taper hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201609779U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831458A (en) * | 2012-11-27 | 2014-06-04 | 创国兴业有限公司 | Inverted cone drill bit structure |
| CN104722813A (en) * | 2013-12-21 | 2015-06-24 | 中建四局安装工程有限公司 | Method and percussion bit for drilling back taper hole in concrete wall |
| CN105983858A (en) * | 2015-02-03 | 2016-10-05 | 杭州富锚机械有限公司 | Efficient rough machining device and method for anchor plate holes |
| CN109530744A (en) * | 2018-11-28 | 2019-03-29 | 上海东鼎钢结构有限公司 | Fire-fighting spraying head production method peculiar to vessel |
-
2009
- 2009-12-31 CN CN2009202150760U patent/CN201609779U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831458A (en) * | 2012-11-27 | 2014-06-04 | 创国兴业有限公司 | Inverted cone drill bit structure |
| CN104722813A (en) * | 2013-12-21 | 2015-06-24 | 中建四局安装工程有限公司 | Method and percussion bit for drilling back taper hole in concrete wall |
| CN105983858A (en) * | 2015-02-03 | 2016-10-05 | 杭州富锚机械有限公司 | Efficient rough machining device and method for anchor plate holes |
| CN109530744A (en) * | 2018-11-28 | 2019-03-29 | 上海东鼎钢结构有限公司 | Fire-fighting spraying head production method peculiar to vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20121231 |