CN2715896Y - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN2715896Y CN2715896Y CN 200420071975 CN200420071975U CN2715896Y CN 2715896 Y CN2715896 Y CN 2715896Y CN 200420071975 CN200420071975 CN 200420071975 CN 200420071975 U CN200420071975 U CN 200420071975U CN 2715896 Y CN2715896 Y CN 2715896Y
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- CN
- China
- Prior art keywords
- drill bit
- drilling rod
- edge
- utility
- bit
- 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
A drill bit of the utility model belongs to the processing tools field compising a drilling rod, a drilling rod handle and a bit edge portion. The top end of the bit edge portion is equipped with two slope slots the longitudinal cross-sections of which form a' W 'shape, while the middle slope of the bit edge portion is respectively equipped with a center tip slot. The two slope slots at the top part of the bit edge portion and the center tip slot form a center tip in the center, while the intersection of the slope slots and the center tip slot forms a cutting edge, and the slope slots and the end surface of the bit edge portion form an auxiliary cutting edge. The utility model has simple structure, exact positioning, smooth entering edge of the drill hole, high edge quality of the drill hole without the generations of the defects of the broking of the opening, the raised par of the edge, split, etc, and thus, the utility model is a drill bit with high rotating speed and high efficiency.
Description
Technical field the utility model drill bit belongs to the machining tool field, particularly relates to a kind of accessory that bores reaming tool.
Background technology is in hole drilling and reaming processing, drill bit is the accessory that plays an important role, in metal processing and nonmetal processing, be extensive use of, but in high-revolving hole drilling and reaming processing, boring edge chipping appears easily, in woodwork processing, defective such as be easy to generate the sudden and violent skin in boring edge and tear has influence on the quality of product to be processed.
The purpose of this utility model is to provide a kind of accurate positioning, and the boring inlet edge is smooth, high rotating speed, the high drill bit of boring working (machining) efficiency.
The content the purpose of this utility model of utility model reaches by following measure, it is by drilling rod, drilling rod handle and drill bit blade are formed, the drill bit blade is at the front end of drilling rod, the drilling rod handle is connected the other end of drilling rod, the drilling rod handle is provided with and is connected and installed screw, drilling rod is provided with the spiral flute, there are two surface grooves on the top of drill bit blade, the longitudinal cross-section forms W shape, respectively there is a middle apex of the heart groove on both sides on the inclined-plane, middle part, two surface grooves on the top of drill bit blade and middle apex of the heart groove in be formed centrally the center point, the middle apex of the heart is a cusp, cusp centering location, the crossing formation cutting edge of surface groove and middle apex of the heart groove, the end face of surface groove and drill bit blade forms pair and cuts sword, and pair is cut sword and mark inlet edge in rotary course, guarantees that inlet edge is smooth, initial swarf in boring is discharged by middle apex of the heart groove, the spiral flute that is provided with on drilling rod and the end face of drill bit blade form the polishing sword, modify hole wall surface, in boring procedure, cusp centering accurate positioning, it is little to beat, and the swarf that cutting edge produces is discharged by middle apex of the heart groove, and pair is cut sword, and to have controlled the hell edge smooth, the boring edge does not have chipping, and the edge does not have sudden and violent skin and defective such as tears.
The utility model is simple in structure, accurate positioning, and the boring inlet edge is smooth, boring edge quality height.Can not produce chipping, the sudden and violent skin in edge and defective such as tear is a kind of high rotating speed, high efficiency drill bit.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Accompanying drawing 2 is side-looking enlarged diagrams of accompanying drawing 1.
Accompanying drawing 3 is drill bit blade structural representations of the present utility model.
Accompanying drawing 4 is drill bit blade structural representations of the present utility model.
Accompanying drawing 5 is drill bit blade structural representations of the present utility model.
Accompanying drawing 6 is drill bit blade structural representations of the present utility model.
Accompanying drawing 7 is side views of accompanying drawing 6.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Shown in accompanying drawing 1, accompanying drawing 2, the utility model is by drilling rod 1, and drilling rod handle 2 and drill bit blade 3 are formed, the drill bit blade is at the front end of drilling rod, the drilling rod handle is connected the other end of drilling rod, and the drilling rod handle is provided with and is connected and installed screw 9, and drilling rod is provided with spiral flute 10.
As shown in Figure 3, longitudinal cross-section, the utility model drill bit blade top forms W shape, and the both sides symmetry respectively has a middle apex of the heart groove 4 on the inclined-plane, middle part, has formed the middle apex of the heart 5 at the drill bit blade, forms pair and cuts sword 7, forms polishing sword 8, forms cutting edge 6, cuts sword 11.
As shown in Figure 4, longitudinal cross-section, the utility model drill bit blade top forms W shape, the middle part tiltedly and on the both sides symmetry a middle apex of the heart groove 4 is respectively arranged, formed the middle apex of the heart at the drill bit blade.
As shown in Figure 5, longitudinal cross-section, the utility model drill bit blade top forms W shape, and the both sides symmetry respectively has a middle apex of the heart groove 4 on the inclined-plane, middle part, has formed the middle apex of the heart 5 at the drill bit blade.
As accompanying drawing 6, shown in the accompanying drawing 7, there are two surface grooves on the top of the utility model drill bit blade, two surface groove symmetries are on the both sides on top, the longitudinal cross-section forms W shape, the both sides symmetry respectively has a middle apex of the heart groove 4 on the inclined-plane, middle part, in the top of drill bit blade, be formed centrally center point 5, the middle apex of the heart is a cusp, cusp centering location, the crossing formation cutting edge of surface groove and middle apex of the heart groove, the initial swarf in boring is discharged by middle apex of the heart groove, and the end face of surface groove and drill bit blade forms pair and cuts sword, pair is cut sword and mark inlet edge in rotary course, the assurance inlet edge is smooth, and the boring edge does not have chipping, and the edge does not have sudden and violent skin and defective such as tears, the spiral flute that is provided with on drilling rod and the end face of drill bit blade form the polishing sword, modify hole wall surface.
Claims (3)
1, a kind of drill bit, it is by drilling rod, and drilling rod handle and drill bit blade are formed, and the drill bit blade is at the front end of drilling rod, the drilling rod handle is connected the other end of drilling rod, the drilling rod handle is provided with and is connected and installed screw, and drilling rod is provided with the spiral flute, it is characterized in that there are two surface grooves on the top of drill bit blade, the longitudinal cross-section forms W shape, respectively there is a middle apex of the heart groove on both sides on the inclined-plane, middle part, two surface grooves on the top of drill bit blade and middle apex of the heart groove in be formed centrally the center point, the middle apex of the heart is a cusp.
2, drill bit according to claim 1 is characterized in that the crossing formation cutting edge of surface groove and middle apex of the heart groove, and the end face of surface groove and drill bit blade forms pair and cuts sword, and the spiral flute that is provided with on drilling rod and the end face of drill bit blade form the polishing sword.
3, drill bit according to claim 1 is characterized in that two surface groove symmetries on the both sides on top, and the both sides symmetry respectively has a middle apex of the heart groove on the inclined-plane, middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420071975 CN2715896Y (en) | 2004-07-22 | 2004-07-22 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420071975 CN2715896Y (en) | 2004-07-22 | 2004-07-22 | Drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2715896Y true CN2715896Y (en) | 2005-08-10 |
Family
ID=34874044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420071975 Expired - Fee Related CN2715896Y (en) | 2004-07-22 | 2004-07-22 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2715896Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406574A (en) * | 2013-08-19 | 2013-11-27 | 中国第一汽车股份有限公司 | Special single-pivot eight-point drilling bit and grinding method of drilling bit |
| CN104551188A (en) * | 2015-01-12 | 2015-04-29 | 中山火炬开发区园丰刀具厂（普通合伙） | Molding slotting tool |
| CN107584159A (en) * | 2016-07-07 | 2018-01-16 | 昆山捷鑫辰精密工业刀具有限公司 | A kind of high-intensity welding formula carbide drill |
| CN108656263A (en) * | 2018-05-11 | 2018-10-16 | 方大控股有限公司 | A kind of novel alloy drill bit |
-
2004
- 2004-07-22 CN CN 200420071975 patent/CN2715896Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406574A (en) * | 2013-08-19 | 2013-11-27 | 中国第一汽车股份有限公司 | Special single-pivot eight-point drilling bit and grinding method of drilling bit |
| CN103406574B (en) * | 2013-08-19 | 2016-01-20 | 中国第一汽车股份有限公司 | Single fulcrum eight cutting edge special type drill bit and grinding method thereof |
| CN104551188A (en) * | 2015-01-12 | 2015-04-29 | 中山火炬开发区园丰刀具厂（普通合伙） | Molding slotting tool |
| CN107584159A (en) * | 2016-07-07 | 2018-01-16 | 昆山捷鑫辰精密工业刀具有限公司 | A kind of high-intensity welding formula carbide drill |
| CN108656263A (en) * | 2018-05-11 | 2018-10-16 | 方大控股有限公司 | A kind of novel alloy drill bit |
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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: 20050810 Termination date: 20110722 |