CN206445256U - Step depth drill and drilling tool - Google Patents
Step depth drill and drilling tool Download PDFInfo
- Publication number
- CN206445256U CN206445256U CN201620602590.XU CN201620602590U CN206445256U CN 206445256 U CN206445256 U CN 206445256U CN 201620602590 U CN201620602590 U CN 201620602590U CN 206445256 U CN206445256 U CN 206445256U
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- Prior art keywords
- flank
- major
- blade
- intersection
- chip removal
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Abstract
The utility model is related to a kind of machining tool, especially it is a kind of can automatic chip-removal step depth drill and drilling tool.Rake face, minor flank and major flank including drill, the intersection formation major cutting edge of major flank and rake face, the intersection formation auxiliary-blade of minor flank and rake face, major cutting edge is crossed to form point of a knife with auxiliary-blade, major flank has step surface and cylindrical step, and cylindrical step is located at the intersection of major cutting edge and auxiliary-blade.The utility model has rational in infrastructure simple, and using effect is good, and service life is long, and chip removal is more unimpeded, the features such as chip is difficult to pull.
Description
Technical field
The utility model is related 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
Decorative pattern helically shape, it is big with hole wall friction when the factor for producing the decorative pattern is mainly drilling, irregular product is formed at point of a knife
What is formed during bits knurl participation cutting pulls.
One a kind of entitled depth drill cutter, Publication No. CN203509146U utility model patent, including cutter hub and
Drill bit, cutter hub is 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, roll 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 rationally, during cutting workpiece
Chip breaking facilitates drill bit preferably to be arranged when drilling through deep hole and cut, chip breaking works well during processing into c-type.But the cutter was being cut
Easily there is built-up edge in journey, the too high hardness of built-up edge easily pulls the hole wall surface of drilling.
Another entitled depth drill cutter, Publication No. CN104511624A application for a patent for invention, including：Matrix；Cut
Paring blade, the cutting tip has the cutting edge being formed between chip surface and clearance surface.The chip surface includes
The beveled surface adjacent with clearance surface with the cutting edge, the beveled surface, which has, to be limited between two boundary lines at least
0.1mm width, and in each infinitesimal part along cutting edge, the beveled surface with the cutter
The angle (γ) of at least 25 ° and at most 50 ° of reference planes (RP) formation of heart axis or rotation axis extension.The cutter has preferably
Cutting power, but be short of in terms of chip removal ability, be easier to stay bits in tool surface, accumulate the iron filings pair in tool surface
Cutter applies larger extruding force, causes machining accuracy 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
The utility model is mainly for complicated present in prior art, and using effect is poor, and service life is shorter,
Chip removal is not smooth, and the technical problem such as chip is easily pulled is rational in infrastructure simple there is provided one kind, and using effect is good, and service life is long, chip removal
More unimpeded, chip is difficult the step depth drill pulled.
To achieve the above object, the utility model employs following technical scheme：
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
The intersection formation auxiliary-blade of major cutting edge, minor flank and rake face is formed, major cutting edge is crossed to form on point of a knife, major flank with auxiliary-blade
Provided with least one step surface, step surface is provided with a cylindrical step, and the cylindrical step close to the end of minor flank side
Positioned at the intersection of major cutting edge and auxiliary-blade, cylindrical step includes vertical plane and bottom surface, one cutting of intersecting composition of vertical plane and bottom surface
The intersection of recess, 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 angle shape or arc
Intersection the first blade of formation of shape, step surface and cylindrical step, cylindrical step and minor flank intersection the second blade of formation.
Angle of the angle between plane where 75 °~85 °, bottom surface and major flank between plane where vertical plane and major flank is at 5 °
~15 °.
Step surface is provided with the major flank of drill, a point bits can be carried out to the chip of drill, it is ensured that the width of iron filings, energy
It is more beneficial for discharging iron filings；Cylindrical step is provided with 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 processing workpiece with the second blade
Touch, product can be made to form the function of being cut with scissors after subdrilling in processing, cylindrical step stabilizes the chip deformation of drill blade, cuts
Recess eliminates the built-up edge brought during common drill work, and is processed by the cylindrical step formation mode of drilling and reaming, and can improve brill
The roughness of hole surface.In working angles, the size shape of cylindrical step for can more smoothly discharge iron filings rise compared with
Big effect, the vertical plane of cylindrical step with bottom surface angle into obtuse angle when, be more beneficial for discharging 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 cylindrical step is in 0.1mm~0.3mm, highly in 0.4mm~0.8mm.
Preferably, the width of step surface is in 1mm~4mm, depth is in 0.15mm~1mm.Step surface and cylindrical step chi
Very little that various sizes of various combination can be formed under requirements above, various combination can produce different effect of optimization, especially
After cutting rotational speeds adjustment different rotating speeds value, different dimension combinations is adapted to corresponding cutting rotational speeds.
Preferably, the angle between step surface and major flank is at 5 °~15 °.In working angles, the chip of drill is entered
Row point bits, major flank receives 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 the tough and tensile degree in order to ensure rake face in working angles, it is optimal that the quantity of end face step, which typically chooses four,.
In order to the use of the step depth drill, also specially invent a kind of drilling tool, the drilling tool includes knife
Drill of different shapes, respectively center insert, intermediate blades and outer blade are provided with body, cutter hub, outer blade is using upper
The step depth drill stated.
Preferably, being provided with first channel of chip removal in channel of chip removal and second 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 chip removal rapidly, 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.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 chip removal faster, the convolution space of intermediate blades is small, and chip removal in less second is set under intermediate blades
Passage.
Preferably, the end of center insert is provided with step.The end of center insert is provided with step, can be right
The chip of center insert carries out a point bits, it is ensured that the width of iron filings, and reduction iron filings reduce abrasion to the extruding force of blade.
Preferably, the end of center insert is provided with least one step.Iron filings can be cut off in step, and numbers of steps is more
Thinner, the more thin easier chip removal of iron filings that iron filings can be divided.
Therefore, the utility model has rational in infrastructure simple, and using effect is good, and service life is long, and chip removal is more unimpeded, cuts
The features such as bits are difficult to pull.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the utility model embodiment；
The partial enlargement structural representation that Fig. 2 is region A in Fig. 1；
Fig. 3 is the drilling tool overall structure diagram of the utility model embodiment.
Description of reference numerals：1- major flanks, 2- minor flanks, 3- rake faces, 4- cutter hubs, 6- center inserts, 7- intermediate knifes
Channel of chip removal in piece, the outer blades of 8-, 11- step surfaces, the cylindrical steps of 12-, 31- major cutting edges, 32- auxiliary-blades, 41- first, 42- the
Channel of chip removal in two, 121- vertical planes, 122- bottom surfaces, the blades of 131- first, the blades of 132- second.
Embodiment
For a further understanding of the utility model, the utility model preferred embodiment is retouched with reference to embodiment
State, but it is to be understood that these descriptions are simply to further illustrate feature and advantage of the present utility model, rather than to this practicality
The limitation of new claim.
A kind of step depth drill is present embodiments provided, as shown in figure 1 and 2, step depth drill includes drill
Rake face 3, minor flank 2 and major flank 1, the intersection formation major cutting edge 31 of major flank 1 and rake face 3, minor flank 2 and rake face 3
Intersection formation auxiliary-blade 32, major cutting edge 31 and auxiliary-blade 32 be crossed to form point of a knife, flat provided with two layers of height on major flank 1
Face, low layer plane is step surface 11, and below 1 based on high layer plane, low layer plane is close to nose part.
Step surface 11 is adjacent to be connected with a cylindrical step 12, and cylindrical step 12 is simultaneously positioned at major cutting edge 31 and secondary knife
The intersection of sword 32, cylindrical step 12 instead of original point of a knife, and cylindrical step 12 includes rectangular-shaped vertical plane 121 and trapezoidal shape
Bottom surface 122, vertical plane 121 and bottom surface 122 be intersecting to constitute a cutting recess, and the intersection of vertical plane 121 and bottom surface 122 is cut for this
The bottom of recess is cut, the section of the bottom of the cutting recess is into obtuse angle shape or arc shape.
It is thinner that the more iron filings of quantity of step surface 11 are divided, 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 cylindrical step 12.
Intersection the first blade 131 of formation of step surface 11 and cylindrical step 12, cylindrical step 12 and the intersection of minor flank 2
Form the second blade 132.When drilling is processed, the first blade 131 successively contacts drilling wall with the second blade 132, forms two
Secondary processing, improves machining accuracy.
Step surface 11 and cylindrical step 12 can have three kinds of dimension combinations point under normal circumstances by sizes independent assortment
Not Shi Yongyu basic, normal, high three clock rates degree cutting.
The first size shape is combined：Angle between vertical plane 121 and major flank 1 is 80 °, bottom surface 122 and major flank 1
Between angle be 10 °.The depth of cylindrical step 12 is 0.2mm, is highly 0.6mm.The width of step surface 11 is 2.5mm, deep
Spend 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
Between angle be 5 °.The depth of cylindrical 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 applied to slow cutting.
The third size shape is combined：Angle between vertical plane 121 and major flank 1 is 85 °, bottom surface 122 and major flank 1
Between angle be 15 °.The depth of cylindrical step 12 is 0.3mm, is highly 0.8mm.The width of step surface 11 is 4mm, depth
For 1mm.Angle between step surface 11 and major flank 1 is 15 °.This dimension combination is applied to high-speed cutting.
The present embodiment provides a kind of drilling tool of step depth drill again, as shown in Figure 3, and drilling tool includes knife
Three kinds of drills of different shapes, respectively center insert 6, intermediate blades 7 and outer blade 8, outer knife are provided with body 4, cutter hub 4
One of which step the depth drill more than use of piece 8.Cutter hub 4 is into cylindric, and center insert 6 is arranged on cylindrical center position,
Outer blade 8 is arranged on cylinder outer edge, and intermediate blades 7 are arranged on the position in the middle of cylindrical center and cylinder outward flange.Adding
Work process, outer blade 8 is responsible for drilling workpiece hole wall as main drill insert, and center insert 6 and intermediate blades 7 are fed in cutter hub
During be responsible for the bottom surface of drilling workpiece hole.
Channel of chip removal 41 in channel of chip removal 42 in channel of chip removal 41 and second, first is provided with first on cutter hub 4 to be distributed
Under center insert 6 and outer blade 8, it is responsible for channel of chip removal 42 in the larger iron filings of exclusion, second in drilling process and is distributed
Under intermediate blades 7, it is responsible for excluding less 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 the end of center insert 6 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 and understands method of the present utility model and its core concept.It should refer to
Go out, for those skilled in the art, can also be to this on the premise of the utility model principle is not departed from
Utility model carries out some improvement and modification, and these are improved and modification also falls into the utility model scope of the claims
It is interior.
Claims (9)
1. a kind of step depth drill, includes rake face (3), minor flank (2) and the major flank (1) of drill, major flank (1) is with before
The intersection formation major cutting edge of knife face (3), the intersection formation auxiliary-blade of minor flank (2) and rake face (3), major cutting edge and auxiliary-blade phase
Friendship forms point of a knife, it is characterised in that：The major flank (1) is provided with least one step surface (11), and the step surface (11) is leaned on
The end of nearly minor flank (2) side is provided with a cylindrical step (12), and the cylindrical step (12) is located at major cutting edge and secondary knife
The intersection of sword, cylindrical step (12) includes vertical plane (121) and bottom surface (122), vertical plane (121) and bottom surface (122) intersecting composition
One cutting recess, the intersection of vertical plane (121) and bottom surface (122) is the bottom of the cutting recess, the bottom of the cutting recess
Section into obtuse angle shape or arc shape, intersection the first blade of formation (131) of step surface (11) and cylindrical step (12) is cylindrical
Step (12) and minor flank (2) intersection the second blade of formation (132).
2. step depth drill according to claim 1, it is characterised in that at least meet one of following condition：It is described cylindrical
The depth of step (12) is in 0.1mm~0.3mm, highly in 0.4mm~0.8mm, the width of the step surface (11) 1mm~
4mm, depth is in 0.15mm~1mm.
3. step depth drill according to claim 1, it is characterised in that：The step surface (11) and major flank (1) it
Between angle at 5 °~15 °.
4. step depth drill according to claim 2, it is characterised in that：The step surface (11) and major flank (1) it
Between angle at 5 °~15 °.
5. the step depth drill according to claim 1 or 2 or 3 or 4, it is characterised in that：The vertical plane (121) with it is main after
Angle of the angle between plane where 75 °~85 °, bottom surface (122) and major flank (1) between plane where face (1) is at 5 °
~15 °.
6. a kind of drilling tool of step depth drill according to preceding claims any one of 1-5, including cutter hub (4),
It is characterized in that：Be provided with drill of different shapes, respectively center insert (6) on the cutter hub (4), intermediate blades (7) with
And outer blade (8), outer blade (8) is foregoing step deep hole drill.
7. the drilling tool of step depth drill according to claim 6, it is characterised in that：Set on the cutter hub (4)
There is channel of chip removal (42) in channel of chip removal in first (41) and second.
8. the drilling tool of step depth drill according to claim 7, it is characterised in that：Channel of chip removal in described first
(41) it is centrally located blade (6) and under outer blade (8), channel of chip removal (42) is distributed under intermediate blades (7) in second,
Channel of chip removal (41) has the flow profile for being more than channel of chip removal (42) in second in first.
9. the drilling tool of the step depth drill according to claim 6 or 7 or 8, it is characterised in that：The center insert
(6) end is provided with least one step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602590.XU CN206445256U (en) | 2016-06-16 | 2016-06-16 | Step depth drill and drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602590.XU CN206445256U (en) | 2016-06-16 | 2016-06-16 | Step depth drill and drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206445256U true CN206445256U (en) | 2017-08-29 |
Family
ID=59662211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620602590.XU Withdrawn - After Issue CN206445256U (en) | 2016-06-16 | 2016-06-16 | Step depth drill and drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206445256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312141A (en) * | 2016-06-16 | 2017-01-11 | 浙江欣兴工具有限公司 | Stepped deep-hole drill |
-
2016
- 2016-06-16 CN CN201620602590.XU patent/CN206445256U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312141A (en) * | 2016-06-16 | 2017-01-11 | 浙江欣兴工具有限公司 | Stepped deep-hole drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170829 Effective date of abandoning: 20180529 |
|
| AV01 | Patent right actively abandoned |