CN201086152Y - Annular drill - Google Patents
Annular drill Download PDFInfo
- Publication number
- CN201086152Y CN201086152Y CNU2007200432477U CN200720043247U CN201086152Y CN 201086152 Y CN201086152 Y CN 201086152Y CN U2007200432477 U CNU2007200432477 U CN U2007200432477U CN 200720043247 U CN200720043247 U CN 200720043247U CN 201086152 Y CN201086152 Y CN 201086152Y
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- Prior art keywords
- blade
- boring
- serrated knife
- tapering
- degree
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Abstract
An annular drill is provided, wherein a guide helical cutting blade and a chip-discharge helical groove are arranged lengthwise on the outer surface of the drill body; a plurality of square tooth blades and sharp tooth blades are distributed at a certain distance at the end of the drill body; the tip of the sharp tooth blades is axially higher than the tip of the square tooth blades; the diameter of the drill body from the head to the tail is gradually reduced; and the diameter from the end of inner surface of a clinical through hole to the tail of the drill is gradually increased. The utility model has the advantages of less deviation in positioning during hole-drilling, less energy consumption for hole-drilling, reutilization of waste columnar metal materials after hole-drilling and reduced labor intensity.
Description
Technical field
The utility model relates to a kind of drilling tool, especially for the drill bit of processing metallic than macropore.
Background technology:
The utility model is a kind of Steel Plate Guide Drill, fluted drill is generally adopted in conventional steel plates boring, because spiral bit drilling through hole is that completely cutting is carried out in whole hole, the area of cut is big, and the heat of generation is big, not only limited cutting speed, influence work efficiency, and the operation effort, and the power of its consumption is big, the iron filings that cut can only be worked as waste material, and waste is serious.
Summary of the invention
The purpose of this utility model is at the above-mentioned shortcoming of existing Steel Plate Guide Drill, and a kind of annular drill that improves structure is provided.
The technical scheme that realizes the utility model above-mentioned purpose is: annular drill, it has axial cylindrical hole, bore the body outer surface and longitudinally have guiding helical edges lobe and chip removal helicla flute, bore the body end and be distributed with some flat serrated knife swords and pointed tooth blade separately, the top of pointed tooth blade is on the top that axially is higher than flat serrated knife sword, from boring the body end face to boring the tapering that tail has diameter to reduce gradually, and at the end face of cylindrical hole inner surface to boring the tapering that afterbody has diameter to increase gradually, the two ends of flat serrated knife sword are in respectively on the inner surface and guiding helical edges lobe of cylindrical hole, the two ends of the interior blade of pointed tooth blade are in the inner surface and the blade tip of cylindrical hole respectively, the two ends of its outer blade are in blade tip and guiding helical edges lobe respectively, flat serrated knife cutlery has outer oblique angle α, and the interior blade of pointed tooth blade and outer blade have inner bevel β and outer oblique angle γ respectively.
Described guiding helical edges lobe and chip removal spiral fluted helical angle are the 28-32 degree.
The outer oblique angle α of described flat serrated knife sword is the 7-9 degree, and the inner bevel β of interior blade is the 20-22 degree, and the outer oblique angle γ of outer blade is the 30-35 degree.
Described from boring the body end face to boring the tapering that tail has diameter to reduce gradually, and at the end face of cylindrical hole inner surface to boring the tapering that afterbody has diameter to increase gradually, this tapering δ is the 2.5-3.5 degree.
The top of described pointed tooth blade is on the top that axially is higher than flat serrated knife sword, and this difference in height σ is 0.3-0.4mm.
The accurate positioning deviation is little when the utility model has the advantages that boring, and the energy that boring is consumed is few, and what get out after the boring is the cylindricality metal material, has to recycle to be worth, and is more laborsaving during operation.
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment;
Fig. 2 is the axial view of Fig. 1 medial end portions profile of tooth;
Fig. 3 is the cross-sectional schematic of Fig. 1.
Among the figure, 1 is guiding helical edges lobe, and 2 is helical flute, 3 is flat serrated knife sword, and 4 is the pointed tooth blade, and 41 is interior blade, 42 is outer blade, 5 is cylindrical hole, and 6 is to bore tail, and δ is for boring the tapering that the body outer surface changes to the brill tail from end face to brill tail, cylindrical hole inner surface from end face, σ is the difference in height of the top of pointed tooth blade on the top of axial and flat serrated knife sword, α is the outer oblique angle of flat serrated knife sword, and β is the inner bevel of interior blade, and γ is the outer oblique angle of outer blade.
The specific embodiment
Below in conjunction with the description of drawings specific embodiment of the present utility model.
Annular drill, it has axial cylindrical hole 5, bores the body outer surface and longitudinally has guiding helical edges lobe 1 and chip removal helicla flute 2, and the helical angle of guiding helical edges lobe 1 and chip removal helicla flute 2 is 30 degree.Bore the body end and be distributed with three flat serrated knife swords 3 and three pointed tooth blades 4 separately, the top of pointed tooth blade 4 axially is being higher than the top 0.3mm of flat serrated knife sword 3, from boring the body end face to boring the tapering that tail has diameter to reduce gradually, and at the end face of cylindrical hole inner surface to boring the tapering that afterbody has diameter to increase gradually, this tapering δ is 3 degree, the two ends of flat serrated knife sword 3 are in respectively on the inner surface and guiding helical edges lobe 1 of cylindrical hole 5, the two ends of the interior blade 41 of pointed tooth blade 4 are in the inner surface and the blade tip of cylindrical hole 5 respectively, the two ends of its outer blade 42 are in blade tip and guiding helical edges lobe 1 respectively, flat serrated knife sword 3 has the outer oblique angle α of 8 degree, and the interior blade 41 of pointed tooth blade 4 and outer blade 42 have the inner bevel β of 20 degree and the outer oblique angle γ of 35 degree respectively.
Claims (5)
1. annular drill, it has axial cylindrical hole, bore the body outer surface and longitudinally have guiding helical edges lobe and chip removal helicla flute, it is characterized in that: bore the body end and be distributed with some flat serrated knife swords and pointed tooth blade separately, the top of pointed tooth blade is on the top that axially is higher than flat serrated knife sword, from boring the body end face to boring the tapering that tail has diameter to reduce gradually, and at the end face of cylindrical hole inner surface to boring the tapering that afterbody has diameter to increase gradually, the two ends of flat serrated knife sword are in respectively on the inner surface and guiding helical edges lobe of cylindrical hole, the two ends of the interior blade of pointed tooth blade are in the inner surface and the blade tip of cylindrical hole respectively, the two ends of its outer blade are in blade tip and guiding helical edges lobe respectively, flat serrated knife cutlery has outer oblique angle α, and the interior blade of pointed tooth blade and outer blade have inner bevel β and outer oblique angle γ respectively.
2. annular drill according to claim 1 is characterized in that: described guiding helical edges lobe and chip removal spiral fluted helical angle are the 28-32 degree.
3. annular drill according to claim 1 is characterized in that: the outer oblique angle α of described flat serrated knife sword is the 7-9 degree, and the inner bevel β of interior blade is the 20-22 degree, and the outer oblique angle γ of outer blade is the 30-35 degree.
4. annular drill according to claim 1 is characterized in that: described from boring the body end face to boring the tapering that tail has diameter to reduce gradually, and at the end face of cylindrical hole inner surface to boring the tapering that afterbody has diameter to increase gradually, this tapering δ is the 2.5-3.5 degree.
5. annular drill according to claim 1 is characterized in that: the top of described pointed tooth blade is on the top that axially is higher than flat serrated knife sword, and this difference in height σ is 0.3-0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200432477U CN201086152Y (en) | 2007-08-20 | 2007-08-20 | Annular drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200432477U CN201086152Y (en) | 2007-08-20 | 2007-08-20 | Annular drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201086152Y true CN201086152Y (en) | 2008-07-16 |
Family
ID=39633741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200432477U Expired - Fee Related CN201086152Y (en) | 2007-08-20 | 2007-08-20 | Annular drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201086152Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802852A (en) * | 2010-01-13 | 2012-11-28 | 艾温工业工具公司 | Coated hole cutter |
| CN105364138A (en) * | 2015-12-09 | 2016-03-02 | 重庆光大机械厂有限公司 | Hollow annular groove drilling bit |
| CN106625870A (en) * | 2017-02-20 | 2017-05-10 | 延锋彼欧汽车外饰***有限公司 | Drilling tool |
-
2007
- 2007-08-20 CN CNU2007200432477U patent/CN201086152Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802852A (en) * | 2010-01-13 | 2012-11-28 | 艾温工业工具公司 | Coated hole cutter |
| US9586270B2 (en) | 2010-01-13 | 2017-03-07 | Irwin Industrial Tool Company | Coated hole cutter |
| CN105364138A (en) * | 2015-12-09 | 2016-03-02 | 重庆光大机械厂有限公司 | Hollow annular groove drilling bit |
| CN106625870A (en) * | 2017-02-20 | 2017-05-10 | 延锋彼欧汽车外饰***有限公司 | Drilling tool |
| CN106625870B (en) * | 2017-02-20 | 2018-07-10 | 延锋彼欧汽车外饰***有限公司 | A kind of drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Changzhou Xixiashu Tool-Research Institute Co., Ltd. Assignor: Changzhou Wansui Tool Plant Contract fulfillment period: 2009.8.5 to 2014.8.5 Contract record no.: 2009320001498 Denomination of utility model: Annular drill Granted publication date: 20080716 License type: Exclusive license Record date: 20090812 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.8.5 TO 2014.8.5; CHANGE OF CONTRACT Name of requester: CHANQZHOU XIXIASHU TOOL-RESEARCH INSTITUTE CO.,LTD Effective date: 20090812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 Termination date: 20140820 |
|
| EXPY | Termination of patent right or utility model |