CN106312141B - Step depth drill - Google Patents
Step depth drill Download PDFInfo
- Publication number
- CN106312141B CN106312141B CN201610431371.4A CN201610431371A CN106312141B CN 106312141 B CN106312141 B CN 106312141B CN 201610431371 A CN201610431371 A CN 201610431371A CN 106312141 B CN106312141 B CN 106312141B
- Authority
- CN
- China
- Prior art keywords
- blade
- flank
- major
- outer circle
- drill
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The present invention relates to a kind of machining tool, especially it is a kind of can automatic chip-removal step depth drill.Rake face, minor flank and major flank including drill, the intersection of major flank and rake face forms major cutting edge, the intersection of minor flank and rake face forms auxiliary-blade, major cutting edge is crossed to form point of a knife with auxiliary-blade, major flank has step surface and outer circle step, and outer circle step is located at the intersection of major cutting edge and auxiliary-blade.The present invention has the features such as rational in infrastructure simple, using effect is good, and service life is long, and chip removal is more unimpeded, and chip is not easy to pull.
Description
Technical field
The present invention relates to a kind of machining tool, especially it is a kind of can automatic chip-removal step depth drill.
Background technology
In existing more deep hole machining, the quality problems of appearance largely have decorative pattern or knife flower for hole wall surface, should
Helically shape, the factor for generating the decorative pattern are mainly big with hole wall friction when drilling to decorative pattern, and irregular product is formed at point of a knife
What bits knurl participated in being formed during cutting pulls.
One a kind of entitled depth drill cutter, the utility model patent of Publication No. CN203509146U, including cutter hub and
Drill bit, cutter hub are the cylinder that cross section is C-shaped, and drill bit is arranged on a bottom surface of the cutter hub, and drill bit is included sequentially
Knife face after the major first face of connection, the first cutting edge, the second rake face, the second cutting edge, second rolls knife before sword, the 3rd
Knife face after face, the 3rd cutting edge, the 3rd.Drill bit cutting portion is divided into three sections of cuttings, and each section of angular distribution is reasonable, during cutting workpiece
Chip breaking facilitates drill bit preferably to be arranged when drilling through deep hole and cuts into c-type, during processing chip breaking work well.But the cutter was being cut
Built-up edge is susceptible in journey, the excessively high hardness of built-up edge easily pulls the hole wall surface of drilling.
The application for a patent for invention of another entitled depth drill cutter, Publication No. CN104511624A, including：Matrix；It cuts
Paring blade, the cutting tip have the cutting edge being formed between chip surface and clearance surface.The chip surface includes
The beveled surface adjacent with the cutting edge and clearance surface, which, which has, is limited between two boundary lines at least
The width of 0.1mm, and in each infinitesimal part along cutting edge, the beveled surface in the cutter
Mandrel line or the reference planes (RP) of rotation axis extension form at least 25 ° and at most 50 ° of angle (γ).The cutter has preferably
Cutting power, but be short of in terms of chip removal ability, it is easier to stay bits in tool surface, accumulates the iron filings in tool surface to knife
Tool applies larger extruding force, and machining accuracy is caused to decline, while that does not drain in time on cutter stays bits and easily pull drilling
Hole wall surface.
The content of the invention
Present invention is generally directed to complicated present in the prior art, using effect is poor, and service life is shorter, chip removal
Not smooth, the technical problems such as chip is easily pulled provide a kind of rational in infrastructure simple, and using effect is good, and service life is long, and chip removal is more
Unimpeded, chip is not easy the step depth drill pulled.
To achieve the above object, present invention employs following technical solutions：
A kind of step depth drill includes the intersection of rake face, minor flank and the major flank of drill, major flank and rake face
Form major cutting edge, the intersection of minor flank and rake face forms auxiliary-blade, and major cutting edge and auxiliary-blade are crossed to form point of a knife, on major flank
Equipped at least one step surface, step surface is set close to the end of minor flank one side there are one outer circle step, and the outer circle step
Positioned at the intersection of major cutting edge and auxiliary-blade, outer circle step includes vertical plane and bottom surface, and one cutting of composition is intersected in vertical plane and bottom surface
The intersection of recess portion, vertical plane and bottom surface is the bottom of the cutting recess, and the section of the bottom of the cutting recess is into obtuse shape or arc
The intersection of shape, step surface and outer circle step forms the first blade, and outer circle step forms the second blade with minor flank intersection.
Angle of the angle between plane where 75 °~85 °, bottom surface and major flank between plane where vertical plane and major flank 5 °~
15°。
Step surface is provided on the major flank of drill, a point bits can be carried out to the chip of drill, ensures the width of iron filings, energy
It is more advantageous to discharge iron filings；Outer circle step is provided at point of a knife, changes the cutting way of drill, the first blade and the second blade structure
Into a Virtual Cutting face, the Virtual Cutting face with inclination angle causes the first blade to be first followed by with workpieces processing with the second blade
It touches, product can be made to form the function of being cut with scissors after subdrilling in processing, outer circle step stabilizes the chip deformation of drill blade, cutting
Caused built-up edge when recess portion eliminates common drill work, and the mode of drilling and reaming is formed by outer circle step and is processed, brill can be improved
The roughness of hole surface.During the cutting process, the size shape of outer circle step for can more smoothly discharge iron filings rise compared with
Big effect, the vertical plane of outer circle step with bottom surface angle into obtuse angle when, be more advantageous to discharge iron filings, wherein more preferred scheme,
Angle between vertical plane and major flank is 80 °, and the angle between bottom surface and major flank is 10 °.
Preferably, the depth of outer circle step is in 0.1mm~0.3mm, highly in 0.4mm~0.8mm.
Preferably, the width of step surface, in 1mm~4mm, depth is in 0.15mm~1mm.Step surface and outer circle step ruler
Very little that various sizes of various combination can be formed under requirements above, various combination can generate different effect of optimization, especially
After cutting rotational speeds adjustment different rotating speeds value, different dimension combinations is suitble to corresponding cutting rotational speeds.
Preferably, the angle between step surface and major flank is at 5 °~15 °.During the cutting process, the chip of drill into
Row point bits, major flank receive certain extruding force under the extruding of iron filings, and end face step forms certain differential seat angle with major flank,
The extruding force suffered by major flank can be effectively decomposed, under different cutting rotational speeds, between optimal end face step and major flank
Angle change between 5 °~15 °.
Preferably, the quantity of step surface is at two to four.Step surface plays bifurcating chip action, quantitatively The more the better, but
It is to ensure the tough and tensile degree of rake face during the cutting process, it is optimal that the quantity of end face step, which generally chooses four,.
In order to be used cooperatively the step depth drill, a kind of drilling tool is also specially invented, which includes knife
Body is provided with drill of different shapes on cutter hub, is respectively center insert, intermediate blades and outer blade, outer blade is using upper
The step depth drill stated.
Preferably, channel of chip removal channel of chip removal and second in is provided in first on cutter hub.In cutter high-speed cutting mistake
Cheng Zhong, cutting makes the irregular squeezing knife tool of iron filings to much knives tool simultaneously, double chip removing passage can rapid chip removal, prevent iron filings from accumulating.
Preferably, channel of chip removal is centrally located blade in first and under outer blade, channel of chip removal is distributed in second
Under intermediate blades, channel of chip removal has the flow profile for being more than channel of chip removal in second in first.It is cut in the rotation of cutter
In bits, the convolution space of outer blade is big, and chip processing capacity is larger, is set under center insert and outer blade in larger first
Channel of chip removal, can faster chip removal, the convolution space of intermediate blades is small, and chip removal in smaller second is set under intermediate blades
Passage.
Preferably, the endface of center insert is provided with step.The endface of center insert is provided with step, can be right
The chip of center insert carries out a point bits, ensures the width of iron filings, reduces extruding force of the iron filings to blade, reduces abrasion.
Preferably, the endface of center insert is provided at least one step.Iron filings can be cut off in step, and numbers of steps is more
It can be thinner, the more thin easier chip removal of iron filings of iron filings point.
Therefore, the present invention has rational in infrastructure simple, and using effect is good, and service life is long, and chip removal is more unimpeded, and chip is not
The features such as easily pulling.
Description of the drawings
Fig. 1 is the overall structure diagram of the embodiment of the present invention；
Fig. 2 is the partial enlargement structural representation of region A in Fig. 1；
Fig. 3 is the drilling tool overall structure diagram of the embodiment of the present invention.
Reference sign：1- major flanks, 2- minor flanks, 3- rake faces, 4- cutter hubs, 6- center inserts, 7- intermediate blades,
The outer blades of 8-, 11- step surfaces, 12- outer circle steps, 31- major cutting edges, 32- auxiliary-blades, channel of chip removal in 41- first, 42- second
Interior channel of chip removal, 121- vertical planes, 122- bottom surfaces, the first blades of 131-, the second blades of 132-.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are simply for the feature and advantage that further illustrate the present invention rather than to the claims in the present invention
Limitation.
A kind of step depth drill is present embodiments provided, as shown in figure 1 and 2, step depth drill includes drill
The intersection of rake face 3, minor flank 2 and major flank 1, major flank 1 and rake face 3 forms major cutting edge 31, minor flank 2 and rake face 3
Intersection form auxiliary-blade 32, major cutting edge 31 and auxiliary-blade 32 are crossed to form point of a knife, and it is flat that two layers of height is equipped on major flank 1
Face, low layer plane are step surface 11, and below 1 based on high layer plane, low layer plane is close to nose part.
11 adjacent connection of step surface is there are one outer circle step 12, and outer circle step 12 is simultaneously positioned at major cutting edge 31 and auxiliary-blade
32 intersection, outer circle step 12 include rectangular-shaped vertical plane 121 and trapezoidal shape instead of original point of a knife, outer circle step 12
The intersection of bottom surface 122, vertical plane 121 and bottom surface 122 one cutting recess of intersecting composition, vertical plane 121 and bottom surface 122 is the cutting
The bottom of recess portion, the section of the bottom of the cutting recess is into obtuse shape or arc shape.
The more iron filings of quantity of step surface 11 are divided thinner, and chip removal is easier, when step surface 11 has multiple, step surface
11 is down-set step by step, and minimum one layer of step surface 11 is near outer circle step 12.
The intersection of step surface 11 and outer circle step 12 forms the first blade 131, outer circle step 12 and 2 intersection of minor flank
Form the second blade 132.When drilling is processed, the first blade 131 successively contacts drilling wall surface with the second blade 132, forms two
Secondary processing improves machining accuracy.
Step surface 11 and outer circle step 12 can be freely combined by sizes, and there are three types of dimension combinations point under normal conditions
Not Shi Yongyu basic, normal, high three clock rates degree cutting.
The first size shape combines：Angle between vertical plane 121 and major flank 1 is 80 °, bottom surface 122 and major flank 1 it
Between angle be 10 °.The depth of outer circle step 12 is 0.2mm, is highly 0.6mm.The width of step surface 11 be 2.5mm, depth
For 0.5mm.Angle between step surface 11 and major flank 1 is 10 °.This dimension combination is cut suitable for middling speed.
Second of size shape combination：Angle between vertical plane 121 and major flank 1 is 75 °, bottom surface 122 and major flank 1 it
Between angle be 5 °.The depth of outer circle step 12 is 0.1mm, is highly 0.4mm.The width of step surface 11 is 1mm, and depth is
0.15mm.Angle between step surface 11 and major flank 1 is 5 °.This dimension combination is suitable for slow cutting.
The third size shape combines：Angle between vertical plane 121 and major flank 1 is 85 °, bottom surface 122 and major flank 1 it
Between angle be 15 °.The depth of outer circle step 12 is 0.3mm, is highly 0.8mm.The width of step surface 11 is 4mm, and depth is
1mm.Angle between step surface 11 and major flank 1 is 15 °.This dimension combination is suitable for high-speed cutting.
The present embodiment provides a kind of drilling tool again, and as shown in Figure 3, drilling tool includes cutter hub 4, is set on cutter hub 4
It puts there are three types of drill of different shapes, is respectively center insert 6, intermediate blades 7 and outer blade 8, outer blade 8 uses above
One of which step depth drill.For cutter hub 4 into cylindric, center insert 6 is mounted on cylindrical center position, and outer blade 8 is mounted on
Cylinder outer edge, intermediate blades 7 are mounted on the position among cylindrical center and cylinder outer edge.In process, outer blade 8
It is responsible for the responsible drilling during cutter hub feeding of drilling workpiece hole wall, center insert 6 and intermediate blades 7 as main drill insert
The bottom surface of workpiece hole.
Channel of chip removal 42 channel of chip removal 41 and second in is provided in first on cutter hub 4, and channel of chip removal 41 is distributed in first
Under center insert 6 and outer blade 8, it is responsible for excluding larger iron filings in drilling process, channel of chip removal 42 is distributed in second
Under intermediate blades 7, it is responsible for excluding smaller iron filings, in design, the stream of channel of chip removal 41 in first in drilling process
Dynamic section is larger, and the flow profile of channel of chip removal 42 is smaller in second, when drilling is circled round, two channel of chip removal row of auxiliary mutually
Scrap iron removing.
In the present embodiment, the quantity of the step on 6 endface of center insert may be configured as one to four, increase drilling process
The chip breaking ability of middle drill.
The explanation of above example is only intended to help to understand method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Several improvement and modification, these improvement and modification are also fallen into the protection domain of the claims in the present invention.
Claims (10)
1. a kind of step depth drill, the rake face including drill（3）, minor flank（2）And major flank（1）, major flank（1）With it is preceding
Knife face（3）Intersection formed major cutting edge, minor flank（2）With rake face（3）Intersection form auxiliary-blade, major cutting edge and auxiliary-blade phase
Friendship forms point of a knife, it is characterised in that：The major flank（1）It is equipped at least one step surface（11）, the step surface（11）It leans on
Nearly minor flank（2）The end of one side is set there are one outer circle step（12）, and the outer circle step（12）Positioned at major cutting edge and secondary knife
The intersection of sword, outer circle step（12）Including vertical plane（121）And bottom surface（122）, vertical plane（121）And bottom surface（122）It is intersecting to form
One cutting recess, vertical plane（121）And bottom surface（122）Intersection be the cutting recess bottom, the bottom of the cutting recess
Section into obtuse shape or arc shape, step surface（11）With outer circle step（12）Intersection formed the first blade（131）, outer circle
Step（12）With minor flank（2）Intersection forms the second blade（132）.
2. step depth drill according to claim 1, it is characterised in that at least meet one of following condition：
Condition one：The outer circle step（12）Depth in 0.1 mm~0.3mm, highly in 0.4 mm~0.8mm；
Condition two：The step surface（11）Width in 1 mm~4mm, depth is in 0.15 mm~1mm.
3. the step depth drill according to claim 1, it is characterised in that：The step surface（11）With major flank（1）
Between angle at 5 °~15 °.
4. the step depth drill according to claim 2, it is characterised in that：The step surface（11）With major flank（1）
Between angle at 5 °~15 °.
5. according to the step depth drill described in claim 1 or 2 or 3 or 4, it is characterised in that：The vertical plane（121）After master
Face（1）Angle between the plane of place is at 75 °~85 °, bottom surface（122）With major flank（1）Angle between the plane of place is at 5 °
~15 °.
6. according to the step depth drill described in claim 1 or 2 or 3 or 4, it is characterised in that：The step surface（11）Number
Amount is at 2-4.
7. a kind of use is according to the drilling tool of preceding claims 1-6 any one of them step depth drills, including cutter hub
（4）, it is characterised in that：The cutter hub（4）On be provided with drill of different shapes, be respectively center insert（6）, intermediate blades
（7）And outer blade（8）, outer blade（8）For foregoing step depth drill.
8. drilling tool according to claim 7, it is characterised in that：The cutter hub（4）On be provided with chip removal in first and lead to
Road（41）With second in channel of chip removal（42）.
9. drilling tool according to claim 8, it is characterised in that：Channel of chip removal in described first（41）It is centrally located
Blade（6）With outer blade（8）Under, channel of chip removal in second（42）It is distributed in intermediate blades（7）Under, channel of chip removal in first
（41）With channel of chip removal in more than second（42）Flow profile.
10. according to the drilling tool described in claim 7 or 8 or 9, it is characterised in that：The center insert（6）Endface set
It is equipped at least one step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431371.4A CN106312141B (en) | 2016-06-16 | 2016-06-16 | Step depth drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431371.4A CN106312141B (en) | 2016-06-16 | 2016-06-16 | Step depth drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106312141A CN106312141A (en) | 2017-01-11 |
| CN106312141B true CN106312141B (en) | 2018-05-29 |
Family
ID=57726351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610431371.4A Active CN106312141B (en) | 2016-06-16 | 2016-06-16 | Step depth drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106312141B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59196108A (en) * | 1983-04-21 | 1984-11-07 | Nippon Yakin:Kk | Cutting edge of solid type |
| JPS60104604A (en) * | 1983-11-14 | 1985-06-10 | Nachi Fujikoshi Corp | Drilling tool |
| DE102004016819B3 (en) * | 2004-04-05 | 2005-08-18 | Hilti Ag | Cutting segment for drill heads, circular saw blades and separating plates comprises cutting surface forming surface sections in stepped manner |
| JP2009255202A (en) * | 2008-04-14 | 2009-11-05 | Yunitakku Kk | Drill head for cutting deep hole |
| JP5165484B2 (en) * | 2008-07-16 | 2013-03-21 | ユニタック株式会社 | Drill head manufacturing method and drill head |
| DE102010018959A1 (en) * | 2010-04-23 | 2011-10-27 | Tbt Tiefbohrtechnik Gmbh + Co | Drilling head for a deep drilling tool for BTA deep drilling and deep hole drilling tool |
| EP2711114B1 (en) * | 2011-05-16 | 2021-09-08 | botek Präzisionsbohrtechnik GmbH | Drill head for deep hole cutting |
| CN206445256U (en) * | 2016-06-16 | 2017-08-29 | 浙江欣兴工具有限公司 | Step depth drill and drilling tool |
-
2016
- 2016-06-16 CN CN201610431371.4A patent/CN106312141B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106312141A (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BRPI0613966A2 (en) | twist drill | |
| CN203401118U (en) | Drill bit used for performing hole machining on fiber composite material | |
| CN108356299A (en) | A kind of ultrasound for the processing of honeycomb core curved profile inserts cutter | |
| CN205551557U (en) | High -efficient fluted drill of layering drilling | |
| CN203621579U (en) | Efficient drilling and reaming compound tool with guide function | |
| CN104338977B (en) | For carrying out the drill bit of hole machined to fibrous composite | |
| CN107398599A (en) | A kind of superfinishing reamer | |
| CN214392488U (en) | Annular cutter for drilling composite material | |
| CN104227093B (en) | Drill point centering countersinking cutter | |
| CN211387046U (en) | Step three-edge forming reamer | |
| CN211387075U (en) | Efficient three-blade broaching tool capable of performing intermittent machining | |
| CN206445256U (en) | Step depth drill and drilling tool | |
| CN106312141B (en) | Step depth drill | |
| CN207942025U (en) | One kind drills and reams thread milling chamfering tool | |
| CN215090924U (en) | Diamond milling cutter | |
| CN206464597U (en) | A kind of new PCD milling cutters | |
| CN201988737U (en) | Vertically-mounted five-edged cutting blade for rough machining | |
| CN206263311U (en) | Depth drill and drilling tool | |
| CN204975452U (en) | Optimize spot facing work drill bit of chip groove | |
| CN110919058B (en) | High-efficiency three-blade reamer capable of being intermittently processed | |
| CN207431362U (en) | A kind of single side side milling forming cutter | |
| CN209598274U (en) | A kind of deep hole machining bta deep hole drilling | |
| CN203711944U (en) | Durable drill | |
| CN202622070U (en) | Internal cooling composite reamer | |
| CN206263306U (en) | It is a kind of to improve the apex point that alloy bores chip-breaking performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Deep hole Effective date of registration: 20201217 Granted publication date: 20180529 Pledgee: Zhejiang Haiyan Rural Commercial Bank Co.,Ltd. Shupu sub branch Pledgor: ZHEJIANG XINXING TOOLS Co.,Ltd. Registration number: Y2020330001229 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220216 Granted publication date: 20180529 Pledgee: Zhejiang Haiyan Rural Commercial Bank Co.,Ltd. Shupu sub branch Pledgor: ZHEJIANG XINXING TOOLS Co.,Ltd. Registration number: Y2020330001229 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 314301 No. 699, Yanshan Road, liuliji Town, Shupu Town, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Xinxing Tools Co.,Ltd. Address before: No. 33, Huanbei Road, liuliji Town, Shupu Town, Haiyan County, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG XINXING TOOLS Co.,Ltd. |