CN107159942B - Drilling tool capable of effectively avoiding cutting edge damage - Google Patents
Drilling tool capable of effectively avoiding cutting edge damage Download PDFInfo
- Publication number
- CN107159942B CN107159942B CN201710543298.4A CN201710543298A CN107159942B CN 107159942 B CN107159942 B CN 107159942B CN 201710543298 A CN201710543298 A CN 201710543298A CN 107159942 B CN107159942 B CN 107159942B
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- section
- inner edge
- blade
- edge section
- drill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The application discloses a drilling tool capable of effectively avoiding cutting edge damage, relates to the field of machining tools, and provides a drilling tool capable of effectively avoiding cutting edge damage. The drilling tool comprises a drill bit main body, an inner blade and an outer blade, wherein the inner blade and the outer blade are connected with the drill bit main body, the inner blade is provided with an inner blade, and the outer blade is provided with an outer blade; the inner edge comprises a first inner edge section, a second inner edge section and a third inner edge section; the forefront part of the first inner blade section is a centering point, and the first inner blade section extends from the centering point to the rear outside; the third inner edge section extends outwards and forwards from the center of the drill body; the second inner blade section is located between the first inner blade section and the third inner blade section, the second inner blade section extends from the third inner blade section to the front, the outer end of the second inner blade section is located at the rear of the outer end of the first inner blade section, and the second inner blade section is in smooth transition with the first inner blade section and the third inner blade section. The application can effectively avoid the condition that the inner blade edge is easy to collapse and break.
Description
Technical Field
The application relates to the field of machining tools, in particular to a drilling tool capable of effectively avoiding cutting edge damage.
Background
Common drilling tools include a drill body, an inner blade and an outer blade, both of which are connected with the drill body, the inner blade being provided with an inner blade and the outer blade being provided with an outer blade. The end of the drilling tool is shown in fig. 4, the inner blade extends from the center of the drill bit to the rear and the outside, the forefront end of the inner blade is a centering point, and the centering point is positioned at the center of the drill bit. During processing, the centering point firstly contacts with the workpiece, and the linear speed of the centering point is close to zero and is equal to that of the extruded workpiece, so that the centering point is easy to collapse and is easy to break, the blade is scrapped, and the smooth production is influenced.
Disclosure of Invention
The application aims to solve the technical problems that: the drilling tool can effectively avoid cutting edge damage.
The technical scheme adopted for solving the problems is as follows: a drilling tool capable of effectively avoiding cutting edge damage comprises a drill bit main body, an inner blade and an outer blade, wherein the inner blade and the outer blade are connected with the drill bit main body, the inner blade is provided with an inner blade, and the outer blade is provided with an outer blade; the surface perpendicular to the axis of the drill bit body is a drill bit tangential surface; the inner edge comprises a first inner edge section, a second inner edge section and a third inner edge section; the forefront part of the first inner blade section is a centering point, and the first inner blade section extends from the centering point to the rear outside; the third inner edge section extends outwards and forwards from the center of the drill body; the second inner blade section is positioned between the first inner blade section and the third inner blade section, the second inner blade section extends outwards and forwards from the third inner blade section, the outer end of the second inner blade section is positioned behind the outer end of the first inner blade section, and the second inner blade section is in smooth transition with the first inner blade section and the third inner blade section; the included angle between the second inner edge section and the drill tangential plane is smaller than the included angle between the third inner edge section and the drill tangential plane.
Further is: the front end of the second inner blade section and the front end of the outer blade are positioned in the same drill section; the rear end of the second inner blade section and the rear end of the outer blade are positioned in the same drill section.
Further is: the distance between the front and back directions of the two ends of the second inner blade section is 0.2-0.3 mm, the included angle between the second inner blade section and the cutting face of the drill bit is 2-4 degrees, and the included angle between the outer blade and the cutting face of the drill bit is 1-3 degrees.
The beneficial effects of the application are as follows: the centering point is firstly contacted with the workpiece, the centering point is separated from the center of the drill bit, and has a certain linear velocity, so that the workpiece can be cut normally, extrusion between the cutting edge and the workpiece is avoided, the situation that the cutting edge is easy to collapse and break is effectively avoided, the service life of the blade can be prolonged, and smooth production is ensured.
Drawings
FIG. 1 is a block diagram of a drilling tool effective to avoid edge breakage;
FIG. 2 is a front end block diagram of a drilling tool effective to avoid edge breakage;
FIG. 3 is a schematic view of the arrangement of the inner and outer blades;
FIG. 4 is a block diagram of the inner edge blade;
FIG. 5 is a front end block diagram of a prior art drilling tool;
marked in the figure as: the drill bit comprises a drill bit body 1, an inner blade 2, an outer blade 3, an inner blade 4, a first inner blade section 4-1, a centering point 4-2, a second inner blade section 4-3, a third inner blade section 4-4, an outer blade 5, a drill bit section 6 and a drill bit body center 7.
Detailed Description
The application is further described below with reference to the drawings and the detailed description.
In order to provide a drilling tool which effectively avoids the breakage of the cutting edge, as shown in fig. 1 to 3: the drilling tool comprises a drill body 1, an inner blade 2 and an outer blade 3, wherein the inner blade 2 and the outer blade 3 are connected with the drill body 1, an inner blade 4 is arranged on the inner blade 2, and an outer blade 5 is arranged on the outer blade 3; the surface perpendicular to the axis of the bit body 1 is a bit section 6; the inner edge 4 comprises a first inner edge section 4-1, a second inner edge section 4-3 and a third inner edge section 4-4; the forefront part of the first inner edge section 4-1 is a centering point 4-2, and the first inner edge section 4-1 extends from the centering point 4-2 to the rear; the third inner blade section 4-4 extends outwardly and forwardly from the bit body center 7; the second inner edge section 4-3 is positioned between the first inner edge section 4-1 and the third inner edge section 4-4, the second inner edge section 4-3 extends outwards and forwards from the third inner edge section 4-4, the outer end of the second inner edge section 4-3 is positioned behind the outer end of the first inner edge section 4-1, and the second inner edge section 4-3 is in smooth transition with the first inner edge section 4-1 and the third inner edge section 4-4; the included angle between the second inner blade section 4-3 and the drill section 6 is smaller than the included angle between the third inner blade section 4-4 and the drill section 6.
The front-rear direction of the present application refers to the axial direction of the drilling tool, that is, the feeding direction of the drilling tool, and the front of the feeding direction of the drilling tool is the front of the present application. The inner and outer sides of the present application are determined according to the distance from the center 7 of the drill body, and the distance is the outer side and the distance is the inner side.
The present application achieves the edge arrangement effect as described above by modifying the shape of the inner edge blade 2 and controlling the angles of the inner edge blade 2 and the outer edge blade 3. The structure and shape of the inner edge blade 2 and the inner edge 4 may be as shown in fig. 4.
When the machining starts, the centering point 4-2 positioned at the forefront end firstly contacts with a workpiece and performs cutting to perform centering, and then the whole first inner edge section 4-1 cuts the workpiece; then the second inner edge section 4-3 and the outer edge 5 cut the workpiece together; when the third inner blade section 4-4 cuts a workpiece, the whole cutting process is in a completely stable state, so that the condition that the cutting edge near the center is extruded and broken due to vibration of working conditions caused by poor centering effect of the blade is avoided, the stability of the drilling process of the drilling tool is effectively improved, and the service life of the cutting blade and the surface quality of a machined hole are effectively prolonged.
As described above, the second inner blade section 4-3 and the outer blade 5 are for cutting the workpiece simultaneously, and therefore the second inner blade section 4-3 and the outer blade 5 should be in the same range in the front-rear direction, that is, the front end of the second inner blade section 4-3 and the front end of the outer blade 5 are located in the same bit face 6 or are located in close proximity to the same bit face 6; the rear end of the second inner blade section 4-3 is located in the same drill section 6 or approximately in the same drill section 6 as the rear end of the outer blade 5.
For best cutting results, some specific parameters of the application are recommended as follows: the distance between the front and back directions of the two ends of the second inner blade section 4-3 is 0.2-0.3 mm, the included angle between the second inner blade section 4-3 and the drill tangential plane 6 is 2-4 degrees, and the included angle between the outer blade 5 and the drill tangential plane 6 is 1-3 degrees.
Claims (2)
1. The utility model provides an effectively avoid damaged drilling tool of blade, includes drill bit main part (1), interior sword blade (2) and outer sword blade (3), and interior sword blade (2) and outer sword blade (3) are all connected with drill bit main part (1), are provided with interior sword (4) on interior sword blade (2), are provided with outer sword (5) on outer sword blade (3); the surface perpendicular to the axis of the drill body (1) is a drill tangential surface (6); the method is characterized in that: the inner edge (4) comprises a first inner edge section (4-1), a second inner edge section (4-3) and a third inner edge section (4-4); the forefront part of the first inner edge section (4-1) is a centering point (4-2), and the first inner edge section (4-1) extends outwards and backwards from the centering point (4-2); the third inner edge section (4-4) extends outwards and forwards from the center (7) of the drill body; the second inner edge section (4-3) is positioned between the first inner edge section (4-1) and the third inner edge section (4-4), the second inner edge section (4-3) extends outwards and forwards from the third inner edge section (4-4), the outer end of the second inner edge section (4-3) is positioned behind the outer end of the first inner edge section (4-1), and the second inner edge section (4-3) is in smooth transition with the first inner edge section (4-1) and the third inner edge section (4-4); the included angle between the second inner edge section (4-3) and the drill tangential plane (6) is smaller than the included angle between the third inner edge section (4-4) and the drill tangential plane (6);
the front end of the second inner blade section (4-3) and the front end of the outer blade (5) are positioned in the same drill section (6); the rear end of the second inner blade section (4-3) and the rear end of the outer blade (5) are positioned in the same drill section (6);
when the machining starts, the centering point (4-2) at the forefront end can firstly contact with a workpiece and cut the workpiece to play a role of centering, and then the whole first inner edge section (4-1) cuts the workpiece; the second inner edge section (4-3) and the outer edge (5) then jointly cut the workpiece.
2. A drilling tool effective to avoid edge breakage as defined in claim 1, wherein: the distance between the front and back directions of the two ends of the second inner blade section (4-3) is 0.2-0.3 mm, the included angle between the second inner blade section (4-3) and the drill tangential plane (6) is 2-4 degrees, and the included angle between the outer blade (5) and the drill tangential plane (6) is 1-3 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543298.4A CN107159942B (en) | 2017-07-05 | 2017-07-05 | Drilling tool capable of effectively avoiding cutting edge damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543298.4A CN107159942B (en) | 2017-07-05 | 2017-07-05 | Drilling tool capable of effectively avoiding cutting edge damage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107159942A CN107159942A (en) | 2017-09-15 |
| CN107159942B true CN107159942B (en) | 2023-08-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543298.4A Active CN107159942B (en) | 2017-07-05 | 2017-07-05 | Drilling tool capable of effectively avoiding cutting edge damage |
Country Status (1)
| Country | Link |
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| CN (1) | CN107159942B (en) |
Citations (13)
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|---|---|---|---|---|
| US5503509A (en) * | 1991-08-08 | 1996-04-02 | Widia Gmbh | Cutting insert and drilling tool for drilling in solid materials |
| CN1198372A (en) * | 1997-04-30 | 1998-11-11 | 塞科机床公司 | Drill |
| JP2002052415A (en) * | 2000-05-30 | 2002-02-19 | Mitsubishi Materials Corp | Throwaway tip and throwaway cutting tool |
| SE0201587D0 (en) * | 2002-05-29 | 2002-05-29 | Sandvik Ab | Drilling tools and indexable drill bits |
| JP2005532175A (en) * | 2002-05-29 | 2005-10-27 | サンドビック インテレクチュアル プロパティー ハンデルスボラーグ | Drilling tool set, drilling tool and indexable drill bit for drilling tool |
| TWI272987B (en) * | 2006-01-17 | 2007-02-11 | Hsin-Tien Chang | Disposable tool |
| JP2007260802A (en) * | 2006-03-27 | 2007-10-11 | Kyocera Corp | Throw-away drill |
| CN101152671A (en) * | 2006-09-25 | 2008-04-02 | 山特维克知识产权股份有限公司 | A tool for chip removing machining and a cutting insert therefor |
| WO2008153233A1 (en) * | 2007-06-14 | 2008-12-18 | Taegutec Ltd. | Drill with cutting inserts |
| CN101549413A (en) * | 2008-03-31 | 2009-10-07 | 三菱麻铁里亚尔株式会社 | Insert for drill and indexable insert drill |
| KR101222291B1 (en) * | 2011-07-20 | 2013-01-15 | 대구텍 유한회사 | Drill tool |
| CN105813783A (en) * | 2013-12-09 | 2016-07-27 | 韩国冶金株式会社 | Cutting insert for indexable drill |
| CN207309025U (en) * | 2017-07-05 | 2018-05-04 | 森泰英格（成都）数控刀具股份有限公司 | A kind of drilling tool for effectively avoiding cutting edge breakage |
-
2017
- 2017-07-05 CN CN201710543298.4A patent/CN107159942B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5503509A (en) * | 1991-08-08 | 1996-04-02 | Widia Gmbh | Cutting insert and drilling tool for drilling in solid materials |
| CN1198372A (en) * | 1997-04-30 | 1998-11-11 | 塞科机床公司 | Drill |
| JP2002052415A (en) * | 2000-05-30 | 2002-02-19 | Mitsubishi Materials Corp | Throwaway tip and throwaway cutting tool |
| SE0201587D0 (en) * | 2002-05-29 | 2002-05-29 | Sandvik Ab | Drilling tools and indexable drill bits |
| CN1655900A (en) * | 2002-05-29 | 2005-08-17 | 山特维克公司 | Drilling tool and indexable drill bit |
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| TWI272987B (en) * | 2006-01-17 | 2007-02-11 | Hsin-Tien Chang | Disposable tool |
| JP2007260802A (en) * | 2006-03-27 | 2007-10-11 | Kyocera Corp | Throw-away drill |
| CN101152671A (en) * | 2006-09-25 | 2008-04-02 | 山特维克知识产权股份有限公司 | A tool for chip removing machining and a cutting insert therefor |
| WO2008153233A1 (en) * | 2007-06-14 | 2008-12-18 | Taegutec Ltd. | Drill with cutting inserts |
| CN101720265A (en) * | 2007-06-14 | 2010-06-02 | 特固克株式会社 | Drill with cutting inserts |
| CN101549413A (en) * | 2008-03-31 | 2009-10-07 | 三菱麻铁里亚尔株式会社 | Insert for drill and indexable insert drill |
| JP2009262319A (en) * | 2008-03-31 | 2009-11-12 | Mitsubishi Materials Corp | Insert for drill and insert drill |
| KR101222291B1 (en) * | 2011-07-20 | 2013-01-15 | 대구텍 유한회사 | Drill tool |
| CN105813783A (en) * | 2013-12-09 | 2016-07-27 | 韩国冶金株式会社 | Cutting insert for indexable drill |
| CN207309025U (en) * | 2017-07-05 | 2018-05-04 | 森泰英格（成都）数控刀具股份有限公司 | A kind of drilling tool for effectively avoiding cutting edge breakage |
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| Publication number | Publication date |
|---|---|
| CN107159942A (en) | 2017-09-15 |
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