CN104416194A - Chip separation drill - Google Patents
Chip separation drill Download PDFInfo
- Publication number
- CN104416194A CN104416194A CN201310379590.9A CN201310379590A CN104416194A CN 104416194 A CN104416194 A CN 104416194A CN 201310379590 A CN201310379590 A CN 201310379590A CN 104416194 A CN104416194 A CN 104416194A
- Authority
- CN
- China
- Prior art keywords
- drill
- chip
- point
- drill bit
- neck
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/18—Configuration of the drill point
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/408—Spiral grooves
Abstract
The invention provides a chip separation drill. The chip separation drill comprises a handle portion which is used for clamping and conveying power and a drill work portion; the handle portion comprises a drill handle and a drill neck; the drill neck is provided with an auxiliary cutting blade and two or three spiral grooves; the drill work portion is arranged on the end portion of the drill neck; the drill work portion comprises a drill tip; the end surface at the top end of the drill tip is provided with a main cutting blade and a cross edge; the drill tip is gradually reduced towards the handle portion direction and the diameter is in an inverted cone shape; the drill tip is provided with more than one chip separating grooves in a surrounding mode; the width of the chip separating grooves is from 0.85 to 3mm; the depth of the chip separation grooves is from 0.6 to 2mm. The chip separation drill can increase the feeding amount, improves the efficiency by 2 to 3 times and is good in chip discharging after polishing of the cross blade and the chip separation groove, plays a good role in drilling steel materials, enables chips to form into narrow and thick stripped cuttings, is beneficial to chip discharging and can reduce the cutting torque.
Description
Technical field
The present invention relates to a kind of point of bits drill bit.
Background technology
Fluted drill is most widely used aperture knife tool.General diameter scope is 0.25 ~ 80 millimeter.It is formed primarily of bit operation part and shank.Working portion has two spiral grooves, and likeness in form fried dough twist, thus gains the name.Friction during in order to reduce to hole between targeting part and hole wall, it is inverted cone shape that fluted drill reduces diameter from apex point gradually to shank direction.On the helical angle major effect cutting edge of fluted drill, the size of anterior angle, sword lobe intensity and chip removal performance, be generally 25 ° ~ 32 °.Spiral groove can use the method processing such as milling, grinding, hot rolling or hot extrusion, and the front end of drill bit forms cutting tip after sharpening.The cutting tip sharp angle of standard fluted drill is 118 °, and chisel edge angle is 40 ° ~ 60 °, and relief angle is 8 ° ~ 20 °.Due to structural reason, anterior angle is large at outer rim place, reduce gradually to centre, and chisel edge place is negative rake, can reach about-55 °, play squeezing action during drilling.In order to improve the cutting ability of fluted drill, cutting tip can be grinding into various profile, as Ni Zhifu drill according to the character of machined material.The shank form of fluted drill has staight shank and taper shank two kinds, add man-hour the former be clipped in drill chuck, the latter is inserted in the taper hole of machine tool chief axis or tailstock.
Common spiral bit extensive use many decades, but under various different service condition, it exposes some shortcomings and problem gradually, can be summarized as follows: one, on main sword, each point anterior angle numerical value change is very large, close to brill, core place has been negative rake, and machining condition is poor.Two, chisel edge is oversize, has very large sword drift angle,
=90 °, be again very large negative rake, machining condition is poorer, and therefore axial drag is large, feels relieved bad.Three, main sword is long, and chip is wide, and the speed that each point chip is flowed out differs greatly, and chip curling becomes wide spiral shell volume, and shared spatial volume is large, and cause chip removal not smooth, cutting fluid is difficult to flow into.Four, thickness of cutting is along cutting edge skewness, large in outer rim place thickness of cutting, and cutting speed is the highest herein; Front clearance is zero, and land and hole wall rub very large.Therefore outer rim place cutting load is large, quick abrasion.Five, the forward and backward angle of chisel edge and the relief angle of main sword closely related, can not control respectively.
The problems referred to above should be paid attention to and the problem solved in the design and production use procedure of fluted drill.
Summary of the invention
The object of this invention is to provide the main sword existed in a kind of point of bits drill bit solution prior art long, chip is wide, and the speed that each point chip is flowed out differs greatly, chip curling becomes wide spiral shell volume, shared spatial volume is large, and cause chip removal not smooth, cutting fluid is difficult to the problem flowed into.
Technical solution of the present invention is:
A kind of point of bits drill bit, comprise for clamping and pass on shank and the bit operation portion of power, described shank comprises drillstock and drill neck, described drill neck is provided with front cutting edge, two or three spiral grooves, described bit operation portion is located at the end of described drill neck, described bit operation portion comprises apex point, the top end face of described apex point is provided with main cutting edge and chisel edge, it is inverted cone shape that described apex point reduces diameter gradually to shank direction, described apex point is around being provided with one or more chip dividing groove, the width of described chip dividing groove is 0.85-3mm, and the degree of depth of described chip dividing groove is 0.6-2mm.
Preferably, the width of described chisel edge is 0.75 ~ 1.5mm.
Preferably, the diameter of described drill neck is 15-50mm, and the brill core diameter of described drill neck is 5-20mm.
Preferably, the degree of depth of described chip dividing groove is greater than the amount of feeding.
Preferably, the quantity of described chip dividing groove is more than two, and the spacing of adjacent described chip dividing groove is 8-12mm.
The present invention's one point bits drill bit, after web thinning and chip dividing groove, can add large inflow, efficiency can improve 2-3 doubly, and chip removal is good.This kind point bits drill bit, plays better effect, forms narrow and thick strip chip, be conducive to chip removal, and can reduce the cutting moment of torque in drilling steel material.Show according to test, the moment of torsion of the present invention a kind of point bits drill bit has larger reduction, compares with common fluted drill, and with the drill bit of diameter phi 31, axial force reduces by 9.1%, and moment of torsion reduces by 16.7%.Diameter is larger, and effect is more remarkable.For the drill bit that diameter is little, grind monolateral point of bits platform or asymmetric sharp angle also can obtain good point of bits effect.
This kind point bits drill bit, can adopt high-speed steel, seting welding carbide or whole hard alloy material to make.In carbide alloy, employing tungsten-carbide powder is matrix, makes binding agent form through pressurization, sintering with cobalt powder, containing tungsten carbide 94%, containing cobalt 6%, on carbonized matrix, the ultrahard titanium carbide of chemical vapor deposition one deck 5 ~ 7 microns or titanium nitride, make it have higher hardness.Physical method can also be used to generate one deck diamond film at drill bit top, greatly improve the hardness and wear resistance of drill bit.The hardness of carbide alloy and intensity, not only relevant with the proportioning of cobalt with tungsten carbide, also relevant with the particle of powder.The carbide drill of ultra-fine particles, the average-size of its tungsten carbide phase crystal grain, below 1 micron, not only makes the high but also resistance to compression of the hardness of drill bit and bending strength all be improved.The drillstock of this kind point bits drill bit can adopt stainless steel, thus can reduce costs largely.
The invention has the beneficial effects as follows: the present invention's one point bits drill bit, after web thinning and chip dividing groove, can add large inflow, efficiency can improve 2-3 doubly, and chip removal is good.This kind point bits drill bit, plays better effect, forms narrow and thick strip chip, be conducive to chip removal, and can reduce the cutting moment of torque in drilling steel material.This kind point bits drill bit, reasonable in design, the better chip removal of drill bit is ensured by arranging chip dividing groove, the main sword that effectively can solve the existence of common fluted drill is long, and chip is wide, and the speed that each point chip is flowed out differs greatly, chip curling becomes wide spiral shell volume, shared spatial volume is large, and cause chip removal not smooth, cutting fluid is difficult to the problem flowed into.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Wherein: 1-main cutting edge, 2-chisel edge, 3-front cutting edge, 4-spiral grooves, 5-chip dividing groove.
Detailed description of the invention
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the present embodiment provides a kind of point of bits drill bit, comprise for clamping and pass on shank and the bit operation portion of power, described shank comprises drillstock and drill neck, described drill neck is provided with front cutting edge 3, article two, spiral grooves 4, described bit operation portion is located at the end of described drill neck, described bit operation portion comprises apex point, the top end face of described apex point is provided with main cutting edge 1 and chisel edge 2, it is inverted cone shape that described apex point reduces diameter gradually to shank direction, described apex point is around being provided with two chip dividing grooves 5, the width of described chip dividing groove 5 is 0.85-3mm, be preferably 1.5mm, the degree of depth of described chip dividing groove 5 is 0.6-2mm, be preferably 1mm.The width of described chisel edge 2 is 0.75 ~ 1.5mm, is preferably 1mm.The diameter of described drill neck is 15-50mm, and be preferably 30mm, the brill core diameter of described drill neck is 5-20mm, is preferably 14mm.The degree of depth of described chip dividing groove 5 is greater than the amount of feeding.The spacing of adjacent described chip dividing groove 5 is 8-12mm, is preferably 10mm.
The present embodiment one point bits drill bit, after web thinning 2 and chip dividing groove 5, can add large inflow, efficiency can improve 2-3 doubly, and chip removal is good.This kind point bits drill bit, plays better effect, forms narrow and thick strip chip, be conducive to chip removal, and can reduce the cutting moment of torque in drilling steel material.Show according to test, the moment of torsion of the present invention a kind of point bits drill bit has larger reduction, compares with common fluted drill, and with the drill bit of diameter phi 31, axial force reduces by 9.1%, and moment of torsion reduces by 16.7%.Diameter is larger, and effect is more remarkable.For the drill bit that diameter is little, grind monolateral point of bits platform or asymmetric sharp angle also can obtain good point of bits effect.
This kind point bits drill bit, can adopt high-speed steel, seting welding carbide or whole hard alloy material to make.In carbide alloy, employing tungsten-carbide powder is matrix, makes binding agent form through pressurization, sintering with cobalt powder, containing tungsten carbide 94%, containing cobalt 6%, on carbonized matrix, the ultrahard titanium carbide of chemical vapor deposition one deck 5 ~ 7 microns or titanium nitride, make it have higher hardness.Physical method can also be used to generate one deck diamond film at drill bit top, greatly improve the hardness and wear resistance of drill bit.The hardness of carbide alloy and intensity, not only relevant with the proportioning of cobalt with tungsten carbide, also relevant with the particle of powder.The carbide drill of ultra-fine particles, the average-size of its tungsten carbide phase crystal grain, below 1 micron, not only makes the high but also resistance to compression of the hardness of drill bit and bending strength all be improved.The drillstock of this kind point bits drill bit can adopt stainless steel, thus can reduce costs largely.
The beneficial effect of the present embodiment is: the present embodiment one point bits drill bit, after web thinning and chip dividing groove, can add large inflow, efficiency can improve 2-3 doubly, and chip removal is good.This kind point bits drill bit, plays better effect, forms narrow and thick strip chip, be conducive to chip removal, and can reduce the cutting moment of torque in drilling steel material.This kind point bits drill bit, reasonable in design, the better chip removal of drill bit is ensured by arranging chip dividing groove, the main sword that effectively can solve the existence of common fluted drill is long, and chip is wide, and the speed that each point chip is flowed out differs greatly, chip curling becomes wide spiral shell volume, shared spatial volume is large, and cause chip removal not smooth, cutting fluid is difficult to the problem flowed into.
Claims (5)
1. one kind of point of bits drill bit, it is characterized in that: comprise for clamping and pass on shank and the bit operation portion of power, described shank comprises drillstock and drill neck, described drill neck is provided with front cutting edge (3), two or three spiral grooves (4), described bit operation portion is located at the end of described drill neck, described bit operation portion comprises apex point, the top end face of described apex point is provided with main cutting edge (1) and chisel edge (2), it is inverted cone shape that described apex point reduces diameter gradually to shank direction, described apex point is around being provided with one or more chip dividing groove (5), the width of described chip dividing groove (5) is 0.85-3mm, the degree of depth of described chip dividing groove (5) is 0.6-2mm.
2. as claimed in claim 1 point of bits drill bit, is characterized in that: the width of described chisel edge (2) is 0.75 ~ 1.5mm.
3. as claimed in claim 1 point of bits drill bit, it is characterized in that: the diameter of described drill neck is 15-50mm, the brill core diameter of described drill neck is 5-20mm.
4. point bits drill bit as described in any one of claim 1-3, is characterized in that: the degree of depth of described chip dividing groove (5) is greater than the amount of feeding.
5. point bits drill bit as described in any one of claim 1-3, it is characterized in that: the quantity of described chip dividing groove (5) is more than two, the spacing of adjacent described chip dividing groove (5) is 8-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379590.9A CN104416194A (en) | 2013-08-28 | 2013-08-28 | Chip separation drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310379590.9A CN104416194A (en) | 2013-08-28 | 2013-08-28 | Chip separation drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104416194A true CN104416194A (en) | 2015-03-18 |
Family
ID=52966937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310379590.9A Pending CN104416194A (en) | 2013-08-28 | 2013-08-28 | Chip separation drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104416194A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874826A (en) * | 2015-05-04 | 2015-09-02 | 深圳崇达多层线路板有限公司 | Drilling method of thick copper circuit board |
| CN105642972A (en) * | 2016-04-12 | 2016-06-08 | 山东大学 | Drilling-reaming-dimpling integrated cutting tool |
| CN107020406A (en) * | 2016-02-02 | 2017-08-08 | 李仕清 | Composite screw groove fluted drill |
| CN107186251A (en) * | 2017-07-24 | 2017-09-22 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
| CN108526554A (en) * | 2018-07-09 | 2018-09-14 | 江苏飞达钻头股份有限公司 | Preceding chip dividing groove bores |
| CN109648278A (en) * | 2019-01-03 | 2019-04-19 | 六安煜晟电子科技有限公司 | A kind of production technology of pcb board target drill |
| CN110681890A (en) * | 2019-10-17 | 2020-01-14 | 上海惠而顺精密工具股份有限公司 | Olecranon type nano diamond coating hard alloy drill bit |
| CN112222487A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Drill bit convenient to chip removal |
| CN113523366A (en) * | 2021-06-22 | 2021-10-22 | 北京理工大学 | Small deep hole drilling tool without cross-edge radial broken line edge |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141832A (en) * | 1994-08-30 | 1997-02-05 | 张孝敬 | Internal-cooling bit of drill |
| CN201609780U (en) * | 2010-01-03 | 2010-10-20 | 阿诺（苏州）刀具有限公司 | Active type chip breaking drill bit |
| KR20110103066A (en) * | 2010-03-12 | 2011-09-20 | 우종명 | F-r drill fast reamer drill |
| CN102489752A (en) * | 2011-12-05 | 2012-06-13 | 重庆川东船舶重工有限责任公司 | Deep hole drill |
| CN103157833A (en) * | 2013-03-15 | 2013-06-19 | 中国航天科技集团公司烽火机械厂 | Longhole double-spiral inner-cooling drill bit |
| CN203459719U (en) * | 2013-08-28 | 2014-03-05 | 天工爱和特钢有限公司 | Chip separating drill bit |
-
2013
- 2013-08-28 CN CN201310379590.9A patent/CN104416194A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141832A (en) * | 1994-08-30 | 1997-02-05 | 张孝敬 | Internal-cooling bit of drill |
| CN201609780U (en) * | 2010-01-03 | 2010-10-20 | 阿诺（苏州）刀具有限公司 | Active type chip breaking drill bit |
| KR20110103066A (en) * | 2010-03-12 | 2011-09-20 | 우종명 | F-r drill fast reamer drill |
| CN102489752A (en) * | 2011-12-05 | 2012-06-13 | 重庆川东船舶重工有限责任公司 | Deep hole drill |
| CN103157833A (en) * | 2013-03-15 | 2013-06-19 | 中国航天科技集团公司烽火机械厂 | Longhole double-spiral inner-cooling drill bit |
| CN203459719U (en) * | 2013-08-28 | 2014-03-05 | 天工爱和特钢有限公司 | Chip separating drill bit |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874826A (en) * | 2015-05-04 | 2015-09-02 | 深圳崇达多层线路板有限公司 | Drilling method of thick copper circuit board |
| CN107020406A (en) * | 2016-02-02 | 2017-08-08 | 李仕清 | Composite screw groove fluted drill |
| CN105642972A (en) * | 2016-04-12 | 2016-06-08 | 山东大学 | Drilling-reaming-dimpling integrated cutting tool |
| CN107186251A (en) * | 2017-07-24 | 2017-09-22 | 江苏飞达钻头股份有限公司 | A kind of Double Tops wedge angle chip dividing drill |
| CN107186251B (en) * | 2017-07-24 | 2023-09-05 | 江苏飞达钻头股份有限公司 | Double-center angle chip drill |
| CN108526554A (en) * | 2018-07-09 | 2018-09-14 | 江苏飞达钻头股份有限公司 | Preceding chip dividing groove bores |
| CN108526554B (en) * | 2018-07-09 | 2023-09-15 | 江苏飞达钻头股份有限公司 | Front chip dividing groove drill |
| CN109648278A (en) * | 2019-01-03 | 2019-04-19 | 六安煜晟电子科技有限公司 | A kind of production technology of pcb board target drill |
| CN110681890A (en) * | 2019-10-17 | 2020-01-14 | 上海惠而顺精密工具股份有限公司 | Olecranon type nano diamond coating hard alloy drill bit |
| WO2021073031A1 (en) * | 2019-10-17 | 2021-04-22 | 上海惠而顺精密工具股份有限公司 | Hawk-beak-type nano-diamond-coated hard alloy drill bit |
| CN112222487A (en) * | 2020-09-22 | 2021-01-15 | 华东理工大学 | Drill bit convenient to chip removal |
| CN113523366A (en) * | 2021-06-22 | 2021-10-22 | 北京理工大学 | Small deep hole drilling tool without cross-edge radial broken line edge |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |