CN107186251B - Double-center angle chip drill - Google Patents
Double-center angle chip drill Download PDFInfo
- Publication number
- CN107186251B CN107186251B CN201710607569.8A CN201710607569A CN107186251B CN 107186251 B CN107186251 B CN 107186251B CN 201710607569 A CN201710607569 A CN 201710607569A CN 107186251 B CN107186251 B CN 107186251B
- Authority
- CN
- China
- Prior art keywords
- cutting
- chip
- cutting edge
- drill
- cutting edges
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/28—Angles
-
- 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
Abstract
The invention provides a double-tip angle chip drill, which comprises a drill tip part, wherein the drill tip comprises two tip angles a and b, the drill tip comprises two cutting edges, each cutting edge comprises two main cutting edges, two chip dividing cutting edges and two auxiliary cutting edges, one end of each auxiliary cutting edge is connected with each chip dividing cutting edge, the other end of each auxiliary cutting edge is connected with each main cutting edge, the main cutting edge and the chip dividing cutting edges of the drill bit are divided into independent two sections of cutting edges, and chip dividing is formed when drilling is achieved; the invention effectively solves the problems of long main edge, wide cutting chip, great difference of the flowing-out speeds of the cutting chips at each point, large occupied space volume, unsmooth chip removal and difficult inflow of cutting fluid of the common twist drill.
Description
Technical Field
The invention relates to the technical field of structural design and manufacture of drilling tools, in particular to a double-center angle-dividing chip drill.
Background
The twist drill drilling process is a semi-closed cutting process, and the chips cannot be discharged freely like turning. When the cuttings are easy to squeeze in the holes and cannot be discharged, the cuttings liquid is not easy to flow in, the drilling temperature is increased, the drilling force is increased, and the abrasion of the drill bit is increased. The most typical example is a group drill, which skillfully grinds crescent arc-shaped blades and multi-blade tip cutting, and the sharp and balanced cutting edges of each section obviously strengthen the smooth chip removal of the chip cutting.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a double-center angle chip drill.
The technical scheme for solving the problems is as follows: the double-tip angle chip drill comprises a drill tip part, wherein the drill tip comprises two tip angles a and b, the drill tip comprises two cutting edges, each cutting edge comprises two main cutting edges, two chip dividing cutting edges and two auxiliary cutting edges, one end of each auxiliary cutting edge is connected with each chip dividing cutting edge, the other end of each auxiliary cutting edge is connected with each main cutting edge, the main cutting edge and each chip dividing cutting edge of the drill bit are divided into independent two sections of cutting edges, and chips are formed when drilling is achieved;
the included angle between the two main cutting edges is a, and a is 115-125 degrees; the included angle between the two chip-separating cutting edges is b, and b is 130-140 degrees. The double-center drill tip also comprises a front cutter surface formed by two spiral grooves in a surrounding mode, wherein the rear cutter surface comprises a main cutting rear cutter surface, a chip dividing cutting rear cutter surface and an auxiliary cutting rear cutter surface, the auxiliary cutting rear cutter surface is arranged between the main cutting rear cutter surface and the chip dividing cutting rear cutter surface, and the diameter of the auxiliary cutting rear cutter surface gradually decreases towards the handle part direction and is in an inverted cone shape; the relief grinding quantity k is arranged on the secondary cutting rear cutter surface along the circumferential direction;
the distance between the tail ends of the two chip-dividing cutting edges is D, the distance between the top ends of the two auxiliary cutting edges is D1, D1 is (0.3-0.8) D, and the distance between the tail ends of the two auxiliary cutting edges is D2, wherein D1 is larger than D2; the height of the secondary cutting edge naturally formed by the double-top sharp angle and the diameters of the two secondary cuts is h1, and the height is about 0.1-1.0mm;
the top end of the secondary cutting edge is the junction of the main cutting edge and the secondary cutting edge;
the tail end of the auxiliary cutting edge is the junction of the chip separating cutting edge and the auxiliary cutting edge;
the drill point is circumferentially provided with two spiral grooves, the width of each spiral groove is equal to the back width, the depth of each spiral groove is (0.35-0.45) D, the spiral angle of each spiral groove is D, the size of D is 20-25 degrees, the auxiliary deflection angle of each spiral groove is e, and the size of e is 2-3 degrees.
The invention has the beneficial effects that:
the invention can increase the feeding amount by grinding the chisel edge and the chip separating cutting edge, the efficiency can be improved by 2-3 times, and the chip removal is good. The chip dividing drill plays a good role in drilling, forms narrow and wide strip chips, is favorable for chip removal and can reduce cutting torque. This kind of chip dividing drill bit, structural design is reasonable, guarantees the better chip removal of drill bit through setting up the chip dividing groove, can effectively solve the main sword that ordinary fluted drill exists often, and the chip is wide, and the speed that each point chip flowed out is very different, and the chip curls into wide spiral shell volume, and occupied space is bulky, leads to the chip removal not smooth, the difficult problem that flows in of cutting fluid.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of the present invention;
in the figure: 1-main cutting edge, 3-auxiliary cutting edge, 4-chip-dividing cutting edge, 5-spiral groove, 6-front tool face, 8-main section, 9-chip-dividing face and 10-auxiliary section.
Detailed Description
The invention is further described with reference to the drawings and detailed description.
As shown in the figure, the double-tip angle chip drill comprises a drill tip part, wherein the drill tip comprises two tip angles a and b, the drill tip comprises two cutting edges, each cutting edge comprises two main cutting edges, two chip dividing cutting edges and two auxiliary cutting edges, one end of each auxiliary cutting edge is connected with each chip dividing cutting edge, the other end of each auxiliary cutting edge is connected with each main cutting edge, the main cutting edge and the chip dividing cutting edge of the drill bit are divided into independent two sections of cutting edges, and chip dividing is formed when drilling is achieved;
the included angle between the two main cutting edges is a, and a is 115-125 degrees; the included angle between the two chip-separating cutting edges is b, and b is 130-140 degrees. The double-center drill tip also comprises a front cutter surface formed by two spiral grooves in a surrounding mode, wherein the rear cutter surface comprises a main cutting rear cutter surface, a chip dividing cutting rear cutter surface and an auxiliary cutting rear cutter surface, the auxiliary cutting rear cutter surface is arranged between the main cutting rear cutter surface and the chip dividing cutting rear cutter surface, and the diameter of the auxiliary cutting rear cutter surface gradually decreases towards the handle part direction and is in an inverted cone shape; the relief grinding quantity k is arranged on the secondary cutting rear cutter surface along the circumferential direction;
the distance between the tail ends of the two chip-dividing cutting edges is D, the distance between the top ends of the two auxiliary cutting edges is D1, D1 is (0.3-0.8) D, and the distance between the tail ends of the two auxiliary cutting edges is D2, wherein D1 is larger than D2; the height of the secondary cutting edge naturally formed by the double-top sharp angle and the diameters of the two secondary cuts is h1, and the height is about 0.1-1.0mm;
the top end of the secondary cutting edge is the junction of the main cutting edge and the secondary cutting edge;
the tail end of the auxiliary cutting edge is the junction of the chip separating cutting edge and the auxiliary cutting edge;
the drill point is circumferentially provided with two spiral grooves, the width of each spiral groove is equal to the back width, the depth of each spiral groove is (0.35-0.45) D, the spiral angle of each spiral groove is D, the size of D is 20-25 degrees, the auxiliary deflection angle of each spiral groove is e, and the size of e is 2-3 degrees.
The invention can increase the feeding amount by grinding the chisel edge and the chip separating cutting edge, the efficiency can be improved by 2-3 times, and the chip removal is good. The chip dividing drill plays a good role in drilling, forms narrow and wide strip chips, is favorable for chip removal and can reduce cutting torque. This kind of chip dividing drill bit, structural design is reasonable, guarantees the better chip removal of drill bit through setting up the chip dividing groove, can effectively solve the main sword that ordinary fluted drill exists often, and the chip is wide, and the speed that each point chip flowed out is very different, and the chip curls into wide spiral shell volume, and occupied space is bulky, leads to the chip removal not smooth, the difficult problem that flows in of cutting fluid.
Claims (3)
1. The double-center angle chip drill is characterized by comprising a drill point part, wherein the drill point comprises two center angles a and b, the drill point comprises two cutting edges, each cutting edge comprises two main cutting edges, two chip dividing cutting edges and two auxiliary cutting edges, one end of each auxiliary cutting edge is connected with each chip dividing cutting edge, the other end of each auxiliary cutting edge is connected with each main cutting edge, the main cutting edge and the chip dividing cutting edges of the drill are divided into independent two sections of cutting edges, and chip dividing is achieved when drilling is achieved;
the included angle between the two main cutting edges is a, a is 115-125 degrees, the included angle between the two chip-separating cutting edges is b, and b is 130-140 degrees; the double-center drill point also comprises a front cutter surface formed by two spiral grooves in a surrounding mode, wherein the rear cutter surface comprises a main cutting rear cutter surface, a chip dividing cutting rear cutter surface and an auxiliary cutting rear cutter surface, the auxiliary cutting rear cutter surface is arranged between the main cutting rear cutter surface and the chip dividing cutting rear cutter surface, the diameter of the auxiliary cutting rear cutter surface gradually decreases towards the handle part direction and is in an inverted cone shape, and the auxiliary cutting rear cutter surface is provided with relief grinding quantity k along the circumferential direction;
the distance between the tail ends of the two chip-dividing cutting edges is D, the distance between the top ends of the two auxiliary cutting edges is D1, D1 is (0.3-0.8) D, and the distance between the tail ends of the two auxiliary cutting edges is D2, wherein D1 is larger than D2; the diameter of the double-tipped angle and the two secondary cuts naturally form a secondary cutting edge having a height h1 of about 0.1-1.0mm.
2. A double-center corner chip drill as claimed in claim 1, wherein the secondary cutting edge is at the junction of the primary cutting edge and the secondary cutting edge.
3. A double-center corner chip drill as claimed in claim 1, wherein the trailing end of the minor cutting edge is the intersection of the chip-dividing cutting edge and the minor cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607569.8A CN107186251B (en) | 2017-07-24 | 2017-07-24 | Double-center angle chip drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607569.8A CN107186251B (en) | 2017-07-24 | 2017-07-24 | Double-center angle chip drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107186251A CN107186251A (en) | 2017-09-22 |
| CN107186251B true CN107186251B (en) | 2023-09-05 |
Family
ID=59884578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710607569.8A Active CN107186251B (en) | 2017-07-24 | 2017-07-24 | Double-center angle chip drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107186251B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209849949U (en) | 2018-01-29 | 2019-12-27 | 米沃奇电动工具公司 | Drill bit |
| CN209157232U (en) | 2018-10-09 | 2019-07-26 | 米沃奇电动工具公司 | Drill bit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201267890Y (en) * | 2008-09-28 | 2009-07-08 | 宁波华刃工具有限公司 | Multi-edge nib chip-breaker |
| WO2009139377A1 (en) * | 2008-05-15 | 2009-11-19 | 住友電工ハ－ドメタル株式会社 | Twist drill bit |
| CN102126039A (en) * | 2011-01-22 | 2011-07-20 | 李仕清 | Spiral cutter for composite positioned cutting |
| CN103084629A (en) * | 2013-02-01 | 2013-05-08 | 周安善 | Twist drill with segmented main cutting blades and asymmetric blade opening height |
| CN204018808U (en) * | 2014-08-14 | 2014-12-17 | 武汉泰尔斯刀具有限公司 | A kind of drill bit for deep hole processing |
| CN104416194A (en) * | 2013-08-28 | 2015-03-18 | 天工爱和特钢有限公司 | Chip separation drill |
| CN207026553U (en) * | 2017-07-24 | 2018-02-23 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
-
2017
- 2017-07-24 CN CN201710607569.8A patent/CN107186251B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009139377A1 (en) * | 2008-05-15 | 2009-11-19 | 住友電工ハ－ドメタル株式会社 | Twist drill bit |
| CN201267890Y (en) * | 2008-09-28 | 2009-07-08 | 宁波华刃工具有限公司 | Multi-edge nib chip-breaker |
| CN102126039A (en) * | 2011-01-22 | 2011-07-20 | 李仕清 | Spiral cutter for composite positioned cutting |
| CN103084629A (en) * | 2013-02-01 | 2013-05-08 | 周安善 | Twist drill with segmented main cutting blades and asymmetric blade opening height |
| CN104416194A (en) * | 2013-08-28 | 2015-03-18 | 天工爱和特钢有限公司 | Chip separation drill |
| CN204018808U (en) * | 2014-08-14 | 2014-12-17 | 武汉泰尔斯刀具有限公司 | A kind of drill bit for deep hole processing |
| CN207026553U (en) * | 2017-07-24 | 2018-02-23 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107186251A (en) | 2017-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8807887B2 (en) | Drill bit with high performance for chip removal | |
| CN102574217A (en) | Twist drill | |
| CN204018808U (en) | A kind of drill bit for deep hole processing | |
| CN107186251B (en) | Double-center angle chip drill | |
| JP2015047655A (en) | End mill having coolant hole | |
| CN203751397U (en) | Chip breaking twist drill | |
| CN207026553U (en) | A kind of Double Tops wedge angle chip dividing drill | |
| CN101670458A (en) | Twist drill | |
| CN202377581U (en) | Novel drill bit | |
| CN204053023U (en) | Drill bit structure | |
| CN210937341U (en) | Three-edge milling cutter | |
| CN101134250A (en) | Milling tool for processing inter cavity of level bubble | |
| CN202356686U (en) | Left-handed straight shank twist drill with three edges | |
| CN209598274U (en) | A kind of deep hole machining bta deep hole drilling | |
| CN207952723U (en) | A kind of four land thin-walled composite drill bit of two-edged | |
| CN203061936U (en) | Drill bit with milling function | |
| JP6447566B2 (en) | Drilling tool | |
| CN206016682U (en) | Combination perforating device | |
| CN106735460B (en) | A kind of vacuum welding formula Superhard Drill | |
| CN208341822U (en) | A kind of drill bit slotted using geometric angle is promoted | |
| CN106891063A (en) | A kind of deburring chamfering integrated cutter | |
| CN2095724U (en) | Twist drill with non-symmetry chip flute | |
| CN212094499U (en) | Chip breaking drill for front cutter face | |
| CN104191011B (en) | A kind of three sword aluminium milling cutters | |
| CN211915601U (en) | Novel deep hole drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |