CN205147410U - Weld porous step flat drill bit - Google Patents
Weld porous step flat drill bit Download PDFInfo
- Publication number
- CN205147410U CN205147410U CN201520876690.7U CN201520876690U CN205147410U CN 205147410 U CN205147410 U CN 205147410U CN 201520876690 U CN201520876690 U CN 201520876690U CN 205147410 U CN205147410 U CN 205147410U
- Authority
- CN
- China
- Prior art keywords
- blade
- drill bit
- flat
- step blade
- cutting
- 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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- Drilling Tools (AREA)
Abstract
The utility model relates to a weld porous step flat drill bit, it by: blade blade, first step blade, second step blade, third step blade, step cutter body constitute. Welded diagonal angle blade, first step blade, second step blade, third step blade on step cutter body front end excircle in proper order, the blade blade is 120 degrees, and first step blade, second step blade, third step blade are flat formula structure. This product simple structure, reasonable in design, it adopts special flat drill bit, can require to confirm the cutting according to the work piece aperture, and cutting effect is good, can guarantee the requirement of concentricity, and the radial cross section of cutting tip is flat, and the cutting resistance is little, and the drill bit is difficult to wear and tear, has prolonged the life of drill bit, has improved work efficiency.
Description
Technical field: the utility model relates to a kind of welding porous step flat drill bit.
Background technology: at present, processing step hole adopts multiple drill bit to cut mostly, processing technology is complicated, concentricity is poor, unstable product quality, and wearing and tearing are large, affect the service life of drill bit, change difficulty, grinding is inconvenient, and cutting resistance is large, steering capability is poor, production cost is high, inefficiency, does not reach standardisation requirements.
Summary of the invention: the purpose of this utility model is to overcome above-mentioned shortcoming, there is provided a kind of welding porous step flat drill bit, it mainly solves processing step hole and mostly adopts multiple drill bit to cut, and processing technology is complicated, concentricity is poor, unstable product quality, wearing and tearing are large, affect the service life of drill bit, change difficulty, the problems such as grinding is inconvenient, and cutting resistance is large, steering capability difference.The purpose of this utility model be achieved in that welding porous step flat drill bit by: cutting edge blade, first step blade, second step blade, the 3rd step blade, step cutter hub are formed.Step cutter hub front end cylindrical is welded with diagonal angle cutting edge blade, first step blade, second step blade, the 3rd step blade successively, and cutting edge blade is 120 degree, and first step blade, second step blade, the 3rd step blade are flat formula structure.This product structure is simple, reasonable in design, it adopts Special flat drill bit, and can require to determine to cut according to workpiece aperture, cutting effect is good, the requirement of concentricity can be ensured, the radial section of cutting tip is flat, and cutting resistance is little, and drill bit is not easy to wear, extend the service life of drill bit, improve operating efficiency.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the utility model welding porous step flat drill bit.
Accompanying drawing 2 is A-A sectional views of the utility model welding porous step flat drill bit cutting edge blade.
1-cutting edge blade, 2-first step blade, 3-second step blade
4-the three step blade 5-step cutter hub
Detailed description of the invention: describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing, welding porous step flat drill bit by: cutting edge blade 1, first step blade 2, second step blade 3, the 3rd step blade 4, step cutter hub 5 are formed.Step cutter hub 5 front end cylindrical is welded with diagonal angle cutting edge blade 1, first step blade 2, second step blade 3, the 3rd step blade 4 successively, cutting edge blade 1 is 120 degree, and first step blade 2, second step blade 3, the 3rd step blade 4 are flat formula structure.
Claims (1)
1. a welding porous step flat drill bit, it by: cutting edge blade (1), first step blade (2), second step blade (3), the 3rd step blade (4), step cutter hub (5) are formed, it is characterized in that: on the cylindrical of step cutter hub (5) front end, be welded with diagonal angle cutting edge blade (1), first step blade (2), second step blade (3), the 3rd step blade (4) successively, cutting edge blade (1) is 120 degree, and first step blade (2), second step blade (3), the 3rd step blade (4) are flat formula structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876690.7U CN205147410U (en) | 2015-11-06 | 2015-11-06 | Weld porous step flat drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876690.7U CN205147410U (en) | 2015-11-06 | 2015-11-06 | Weld porous step flat drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205147410U true CN205147410U (en) | 2016-04-13 |
Family
ID=55683149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520876690.7U Expired - Fee Related CN205147410U (en) | 2015-11-06 | 2015-11-06 | Weld porous step flat drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205147410U (en) |
-
2015
- 2015-11-06 CN CN201520876690.7U patent/CN205147410U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20171106 |