CN205147408U - Shallow hole drilling blade - Google Patents
Shallow hole drilling blade Download PDFInfo
- Publication number
- CN205147408U CN205147408U CN201520616782.1U CN201520616782U CN205147408U CN 205147408 U CN205147408 U CN 205147408U CN 201520616782 U CN201520616782 U CN 201520616782U CN 205147408 U CN205147408 U CN 205147408U
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- blade
- knife face
- locating surface
- hole drilling
- shallow hole
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Abstract
The utility model discloses a shallow hole drilling blade relates to the machining tool field, provides a location effect better shallow hole drilling blade all the time. Shallow hole drilling blade is provided with the locating surface including back knife face, back knife face below, and the inclination of back knife face is first relief angle alpha 1, and the inclination of locating surface is second relief angle alpha 2, alpha 1 < alpha 2. Back knife face is used for the cutting, and the locating surface is used for the location, and when the back knife face acutely wore and tore, the locating surface did not did not wear and tear, so after the blade transposition, it is accurate that its location remains unchanged, the virtual location of blade and the blade pivoted circumstances can not appear, can guarantee blade life and processed the hole quality.
Description
Technical field
The utility model relates to machine tool field, particularly relates to a kind of shallow hole drilling blade.
Background technology
At present, shallow hole drilling blade is quadrangle and adopts single relief angle to design, and blade has four cutting edges, and after cutting edge wearing and tearing, transposition uses, and change another cutting edge and cut, after four cutting edges all wear and tear, blade is just scrapped.The fixed form of shallow hole drilling blade is, blade is connected with cutter hub through the fixing hole of blade center by screw; Rear knife face and cutter hub are fitted and are limited blade and rotate.
As previously mentioned, existing single relief angle blade, knife face has cutting and location dual-use function thereafter, and when cutting edge reaches service life, knife face there will be sharp wear thereafter.After transposition, the rear knife face of wearing and tearing can have influence on as locating surface the effect that blade is fixed to cutter hub, may occur the situation of blade void location and blade rotation, directly causes blade to decline and the reduction of processed hole quality service life.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of locating effect good shallow hole drilling blade all the time.
In order to solve the problem, the technical scheme adopted is: shallow hole drilling blade comprises rear knife face, locating surface is provided with below rear knife face, the angle of inclination of rear knife face is the first relief angle α 1, and the angle of inclination of locating surface is the second relief angle α 2, α 1 < α 2.
Further: the height of rear knife face is L, 0.4mm≤L≤1.2mm, 6 °≤α 1≤10 °, 7 °≤α 2≤15.
The beneficial effects of the utility model are: rear knife face is used for cutting, locating surface is used for location, when rear knife face sharp wear, locating surface does not wear and tear, therefore after blade transposition, its location still accurately, there will not be the situation of blade void location and blade rotation, can ensure blade service life and processed hole quality.
Accompanying drawing explanation
Fig. 1 is that shallow hole drilling blade is three-dimensional;
Fig. 2 is shallow hole drilling blade side view;
Be labeled as in figure: rear knife face 1, locating surface 2.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
As depicted in figs. 1 and 2, shallow hole drilling blade comprises rear knife face 1, is provided with locating surface 2 below rear knife face 1, and the angle of inclination of rear knife face 1 is the first relief angle α 1, and the angle of inclination of locating surface 2 is the second relief angle α 2, α 1 < α 2.
Rear knife face 1 for cut, locating surface 2 for location, when rear knife face 1 sharp wear, locating surface 2 does not wear and tear, and therefore after blade transposition, its location still accurately, there will not be the situation of blade void location and blade rotation, blade service life and processed hole quality can be ensured.
First relief angle α 1 of blade is excessive, and cutting edge strength is poor, easy tipping; First relief angle α 1 is too small, and blade work in-process there will be the situation that blade bottom surface and workpiece are interfered, and causes crudy poor.The height value L of rear knife face 1, is related to intensity and the durability of cutting edge, and L value must be greater than the wear range produced when rear knife face reaches the limit of wear, but can not be excessive, otherwise blade locating surface can be caused too small, affects locating effect.Therefore the size Selection of blade is also very crucial, and applicant, through test of many times, show that the span of α 1, α 2 and L is as follows: 0.4mm≤L≤1.2mm, 6 °≤α 1≤10 °, 7 °≤α 2≤15.
Claims (1)
1. shallow hole drilling blade, comprise rear knife face (1), it is characterized in that: rear knife face (1) below is provided with locating surface (2), the angle of inclination of rear knife face (1) is the first relief angle α 1, the angle of inclination of locating surface (2) is the second relief angle α 2, α 1 < α 2; The height of rear knife face (1) is L, 0.4mm≤L≤1.2mm, 6 °≤α 1≤10 °, 7 °≤α 2≤15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616782.1U CN205147408U (en) | 2015-08-14 | 2015-08-14 | Shallow hole drilling blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520616782.1U CN205147408U (en) | 2015-08-14 | 2015-08-14 | Shallow hole drilling blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205147408U true CN205147408U (en) | 2016-04-13 |
Family
ID=55683147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520616782.1U Active CN205147408U (en) | 2015-08-14 | 2015-08-14 | Shallow hole drilling blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205147408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045228A (en) * | 2020-07-30 | 2020-12-08 | 厦门金鹭特种合金有限公司 | Central drilling blade and drilling tool thereof |
-
2015
- 2015-08-14 CN CN201520616782.1U patent/CN205147408U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112045228A (en) * | 2020-07-30 | 2020-12-08 | 厦门金鹭特种合金有限公司 | Central drilling blade and drilling tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Shuangliu District of Sichuan province 610207 Avenue Chengdu City West of West Port Economic Development Zone in Hong Kong in four No. 685 Patentee after: Sentai eng (Chengdu) CNC tool Limited by Share Ltd Address before: 610000 Sichuan city in Chengdu Province, South Bridge Road, Shuangliu County Sentai eng (Chengdu) NC tool Ltd. Patentee before: Sentai eng (Chengdu) NC tool Ltd. |