CN201460742U - Hard alloy deep hole drill - Google Patents
Hard alloy deep hole drill Download PDFInfo
- Publication number
- CN201460742U CN201460742U CN2009200537425U CN200920053742U CN201460742U CN 201460742 U CN201460742 U CN 201460742U CN 2009200537425 U CN2009200537425 U CN 2009200537425U CN 200920053742 U CN200920053742 U CN 200920053742U CN 201460742 U CN201460742 U CN 201460742U
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- deep hole
- edge portion
- extension
- hole drill
- 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 relates to the field of a machining tool, in particular to a hard alloy deep hole drill which comprises a cuttings shoot, a water tank, a cutting edge part and an extending part, wherein the cutting edge part and the extending part are formed by cutting and processing coaxial cylinders; the external diameter of the cutting edge part is more than that of the extending part; the cuttings shoot passes through the cutting edge part and extends to the extending part; and the water tank is an ostiole passing through the cutting edge part and the extending part. As the external diameter of the cutting edge part is more than that of the extending part, and the extending part is not contacted with a hole wall, so that the smooth finish of the hole wall can be ensured, and torsion applied on the deep hole drill is lower. When a drill hole is cut, cooling liquid is introduced from the water tank; on the one hand, the cooling liquid has the function of cooling, and the processing quality is ensured; and on the other hand, cuttings can be rinsed out of the cuttings shoot by the cooling liquid, and the processing quality also can be guaranteed. The accuracy of a hole pressed by the deep hole drill reaches over H7, the straightness is less than 0.1/1000, the roundness is less than or equal to 0.005, and the surface roughness is less than or equal to Ra 0.8mu m.
Description
Technical field
The utility model relates to the machinery tools field, specifically is a kind of drill bit that is specially adapted to deep hole machining.
Background technology
Deep hole machining is the difficult problem that the machine field is difficult to capture always, and the difficulty of deep hole machining mainly is:
The first, go out the bits difficulty.The conventional drill flute is a helical form, and the friction between bits and the groove is big.The stroke of considering to be worth doing during drilling deep hole is bigger, causes out the bits difficulty easily.Bits and hole wall friction destroy the fineness of hole wall, even fuse mutually.
The second, hole wall fineness is poor.Traditional outside diameter is even.During drilling deep hole, hole wall is rubbed by drill bit for a long time, and simultaneously also by the bits friction, so hole wall fineness is relatively poor.
Three, moment of torsion is big, and drill bit easily fractures.The less hole of diameter can't process
Four, method such as spark machined can't be finished.
Advanced manufacturing technology adopts the way of Laser Processing can process the less deep hole of diameter, but still can't guarantee the fineness of hole wall.
The utility model content
The purpose of this utility model is to provide a kind of drill bit that is specially adapted to deep hole machining, adds less, the machining accuracy that can guarantee the hole of moment of torsion in man-hour.
For realizing above goal of the invention, the utility model carbide alloy deep hole drill comprises flute, tank, cutting edge portion and extension; Cutting edge portion is in the same place with the extension tight weld, and cutting edge portion and extension are formed by coaxial cylinder machining, and the external diameter of cutting edge portion is greater than the external diameter of extension; The end face of cutting edge portion is for being the taper seat of central axis with cylindrical eccentric axis; The cross section of flute is a polygon, and polygonal wherein sideline is through the central axis of taper seat, and polygonal area is less than half of cylinder cross-sectional area; Flute runs through cutting edge portion, and extends to extension; Tank is the aperture that runs through cutting edge portion and extension.
The utility model carbide alloy deep hole drill comprises at least one tank; The intersection of taper seat and flute is the cutting edge of carbide alloy deep hole drill.Cutting edge portion adopts the carbide alloy manufacturing to form, at electroplating surface one deck diamond.Extension can adopt all reasonable high-speed steel manufacturing of toughness and hardness to form.For the ease of clamping, can establish clamping portion at the end of extension, the geomery of clamping portion can be according to the clip designs of universal machine tools.
Cutting edge of the present utility model portion external diameter is greater than the external diameter of extension, and extension can not contact hole wall, has guaranteed the fineness of hole wall, and the suffered moment of torsion of carbide alloy deep hole drill is also smaller.Because taper seat and cutting edge portion cylindrical disalignment, the carbide alloy deep hole drill cutting of can holing smoothly when the carbide alloy deep hole drill rotates.During the boring cutting, import cooling fluid from tank: on the one hand, cooling fluid plays the effect of cooling, guarantees crudy; On the other hand, cooling fluid is gone out bits from flute, has also guaranteed crudy.Diamond has been electroplated by portion at cutting edge, has further increased the hardness of cutting edge portion, has prolonged the application life of carbide alloy deep hole drill.The utility model passes through structure design cleverly, disposable all technical barriers that solved deep hole machining, the precision of the carbide alloy deep hole drill machining hole that provides can reach more than the H7 straightness accuracy＜0.1/1000, circularity≤0.005, surface roughness≤Ra0.8 μ m.
Description of drawings
Fig. 1 is the front view of the utility model preferred embodiment;
Fig. 2 is the left view of the cutting edge portion 1 of the utility model preferred embodiment.
The specific embodiment
Further specify technical solutions of the utility model below in conjunction with preferred embodiment, be not considered as restriction the utility model protection domain.
Fig. 1 is the front view of the utility model preferred embodiment.
Fig. 2 is the left view of the cutting edge portion 1 of the utility model preferred embodiment.
As shown in the figure, the utility model carbide alloy deep hole drill comprises flute 5, tank 6, cutting edge portion 1, extension 2 and clamping portion 3.Cutting edge portion 1 is in the same place with extension 2 tight welds, and cutting edge portion 1 and extension 2 are formed by coaxial cylinder machining, and the external diameter of cutting edge portion 1 is greater than the external diameter of extension 2; The end of cutting edge portion 1 is for being the taper seat 4 of central axis with cylindrical eccentric axis; The cross section of flute 5 is fan-shaped, and fan-shaped wherein sideline is the cylinder radius perpendicular to taper seat 4 central axiss, and fan-shaped central angle is the obtuse angle; Flute 5 runs through cutting edge portion 1, and extends to extension 2; Tank 6 is for running through the aperture of cutting edge portion 1 and extension 2.Cutting edge portion 1 forms for the hard alloy steel manufacturing, the electroplating surface diamond.Extension 2 and clamping portion 3 form for the high-speed steel manufacturing.
Claims (6)
1. the carbide alloy deep hole drill is characterized in that: comprise flute (5), tank (6), cutting edge portion (1) and extension (2); Cutting edge portion (1) and extension (2) tight weld together, cutting edge portion (1) and extension (2) are formed by coaxial cylinder machining, the external diameter of cutting edge portion (1) is greater than the external diameter of extension (2); The end face of cutting edge portion (1) is for being the taper seat (4) of central axis with cylindrical eccentric axis; The cross section of flute (5) is a polygon, and polygonal wherein sideline is through the central axis of taper seat (4), and polygonal area is less than half of cylinder cross-sectional area; Flute (5) runs through cutting edge portion (1), and extends to extension (2); Tank (6) is for running through the aperture of cutting edge portion (1) and extension (2).
2. carbide alloy deep hole drill as claimed in claim 1 is characterized in that: comprise at least one described tank (6).
3. carbide alloy deep hole drill as claimed in claim 1 is characterized in that: the cross section of described flute (5) is fan-shaped, and fan-shaped wherein sideline is the cylinder radius perpendicular to taper seat (4) central axis, and fan-shaped central angle is the obtuse angle.
4. carbide alloy deep hole drill as claimed in claim 1 is characterized in that: described cutting edge portion (1) adopts the carbide alloy manufacturing to form, at electroplating surface one deck diamond.
5. carbide alloy deep hole drill as claimed in claim 1 is characterized in that: described extension (2) adopts toughness and all reasonable high-speed steel manufacturing of hardness to form.
6. carbide alloy deep hole drill as claimed in claim 1 is characterized in that: also comprise clamping portion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200537425U CN201460742U (en) | 2009-03-31 | 2009-03-31 | Hard alloy deep hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200537425U CN201460742U (en) | 2009-03-31 | 2009-03-31 | Hard alloy deep hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460742U true CN201460742U (en) | 2010-05-12 |
Family
ID=42388096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200537425U Expired - Fee Related CN201460742U (en) | 2009-03-31 | 2009-03-31 | Hard alloy deep hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201460742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418987A (en) * | 2013-07-23 | 2013-12-04 | 太原科技大学 | Micro-hole grinding and drilling technology |
| CN103551632A (en) * | 2013-10-24 | 2014-02-05 | 无锡雨田精密工具有限公司 | Inner-cooling double cutting drill |
| CN103567508A (en) * | 2013-07-17 | 2014-02-12 | 昆山巨德泰精密机械有限公司 | Drill bit with radiating hole in blade part |
-
2009
- 2009-03-31 CN CN2009200537425U patent/CN201460742U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567508A (en) * | 2013-07-17 | 2014-02-12 | 昆山巨德泰精密机械有限公司 | Drill bit with radiating hole in blade part |
| CN103418987A (en) * | 2013-07-23 | 2013-12-04 | 太原科技大学 | Micro-hole grinding and drilling technology |
| CN103551632A (en) * | 2013-10-24 | 2014-02-05 | 无锡雨田精密工具有限公司 | Inner-cooling double cutting drill |
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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: 20100512 Termination date: 20140331 |