CN110405258A - A kind of taper drilling reamer - Google Patents
A kind of taper drilling reamer Download PDFInfo
- Publication number
- CN110405258A CN110405258A CN201910575384.2A CN201910575384A CN110405258A CN 110405258 A CN110405258 A CN 110405258A CN 201910575384 A CN201910575384 A CN 201910575384A CN 110405258 A CN110405258 A CN 110405258A
- Authority
- CN
- China
- Prior art keywords
- taper
- drilling
- chip
- cutting portion
- sword
- 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.)
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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
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention discloses a kind of taper drilling reamers, including cutting portion and shank, the cutting portion includes the drilling portion set gradually, neck and taper cutting portion, taper cutting portion is connect with shank, drilling portion includes two drilling chip spaces including two drilling sword valves and between two drilling sword valves, the end face of drilling sword valve is equipped with apex point and periphery is equipped with secondary sword, taper cutting portion includes at least three taper sword valves and three taper chip spaces, drilling chip space and taper chip space all extend to neck, and the axial distance between drilling chip space and taper chip space is L, L > 0.The present invention is separated drilling portion and taper cutting portion by neck, taper cutting portion can be three or more taper chip spaces, without corresponding with drilling portion, on the basis of the core for increasing taper cutting portion is thick, reach chip removal requirement by increasing the quantity of taper chip space, the intensity for thus increasing taper cutting portion increases the shock resistance of cutter, reduces the generation of shake line.
Description
Technical field
The present invention relates to metal cutting tool more particularly to a kind of taper drilling reamers.
Background technique
In metal cutting process industry, the concentricity and hole wall surface quality requirement of the joint arm taper hole of knuckle all compared with
Comparatively height belongs to unmanageable position.Its common process is first with common fluted drill bottom outlet, then with taper broad half
Surplus is gone in finishing, finally in place with bottoming reamer processing.With the development of cutting technology, processing beat requirement of the client to part
Also higher and higher.Simple function cutter is often difficult to meet the requirements, so needing compound cutting tool.
The patent document of notification number CN201520334391 discloses a kind of knuckle taper hole taper drill bit.The drill bit is set
There are linear interpolation portion and tapered cutting edge, and taper blade surface has two helical forms and gradually narrowed side edge.Use Shi Keman
Sufficient knuckle bores, expands the processing of two-step.But the drill bit, by the way of two chip spaces, tapered cutting edge part is also two
Chip space will lead to the strength reduction of taper blade portion, and vibration is also easy to produce in processing, and hole wall surface forms shake line；Gradually narrow
Though side edge structure can reduce cutting force to a certain extent, the squeezing action to hole wall is consequently reduced, so the brill
The machined surface quality of head is low, is only able to satisfy the processing of brill, expansion, is not able to satisfy the requirement for finish reaming processing.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide it is a kind of by neck by drilling portion with
Taper cutting portion separates, and taper cutting portion can be three or more taper chip spaces, without corresponding with drilling portion, is increasing
On the basis of the core of taper cutting portion is thick, reach chip removal requirement by increasing the quantity of taper chip space, thus increases taper
The intensity of cutting portion increases the shock resistance of cutter, reduces the taper drilling reamer of the generation of shake line.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of taper drilling reamer, including cutting portion and shank, the cutting portion include the drilling portion set gradually, neck and
Taper cutting portion, the taper cutting portion are connect with shank, and the drilling portion includes including two drilling sword valves and set on two
Two drilling chip spaces between a drilling sword valve, the end face of the drilling sword valve is equipped with apex point and periphery is equipped with pair
Sword, the taper cutting portion include at least three taper sword valves and three taper chip spaces, and the drilling chip space and taper are arranged
Bits slot all extends to neck, and the axial distance between drilling chip space and taper chip space is L, L > 0.
As a further improvement of the above technical scheme:
As a further improvement of the above technical scheme, the periphery of the taper sword valve is equipped with land, the land
Width be B1, meet: 0.2mm≤B1≤0.3mm.
As a further improvement of the above technical scheme, at least one land is equipped with chip-breaker, the chip-breaker
Length is L3, and the width of the taper sword valve is B2, is met: B1 < L3 < B2.
As a further improvement of the above technical scheme, the relief angle of the chip-breaker be β 3, width B3, depth H3,
Meet: 3≤10 ° of 6 °≤β, 0.5mm≤B3=2H3≤1mm.
As a further improvement of the above technical scheme, the minute of angle of the taper chip space is γ, and at least there are two divide
Spend the of different sizes of angle γ.
As a further improvement of the above technical scheme, the shank surface is equipped at least three logical oil grooves, each logical oil groove
It is corresponding with each taper chip space and be connected to.
As a further improvement of the above technical scheme, the minute of angle δ of the logical oil groove and corresponding taper chip space
Minute of angle γ is equal；The width of the logical oil groove is B4, depth H4, is met: 1.5mm≤B4=H4≤3mm.
As a further improvement of the above technical scheme, the relief angle of the taper sword valve is β 2, and the relief angle of the land is β
1, meet: 2≤25 ° of β 1=0,15 °≤β.
As a further improvement of the above technical scheme, the outside diameter in the drilling portion is d, and the core in the drilling portion is thick
For d1, the core thickness of the taper cutting portion is d2, and the core thickness of the neck is d3, is met: 0.25d≤d1≤0.33d, 0.45d
≤ d2≤0.6d, d3 < d.
As a further improvement of the above technical scheme, 3mm≤L≤5mm.
Compared with the prior art, the advantages of the present invention are as follows:
(1) taper drilling reamer of the invention is separated drilling portion and taper cutting portion by neck, and the two is mutually indepedent,
It is still two drilling chip spaces in drilling portion, can be three or more taper chip spaces on taper cutting portion, without
It is corresponding with drilling portion, in this way, which the core thickness of taper cutting portion can be done larger, on this basis, increase taper can be leaned on
The quantity of chip space reaches chip removal requirement, and taper cutting portion mainly completes reaming and fraising, needs biggish intensity, increasing
The core of taper cutting portion is thick, to increase the intensity of taper cutting portion, increases the shock resistance of cutter, reduces the production of shake line
It is raw.And the quantity of taper sword valve is also increase accordingly, and increases the machinable sword number of taper cutting portion, reduces per tooth feeding
Amount, and then cutting force can be reduced, be conducive to improve processing quality.
(2) taper drilling reamer of the invention, increases the rigidity of cutter, increases land to the squeezing effect of hole wall, increases
Add chip breaking ability, increased cooling effect, preferably balances cutting force, therefore the present invention meets processing knuckle joint arm hole
Brill, expansion, hinge be integrally machined, processing beat can be reduced, reduce processing cost.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the invention.
Fig. 2 is C-C view in Fig. 1.
Fig. 3 is enlarged drawing at A in Fig. 1.
Fig. 4 is the K direction view in Fig. 1.
Fig. 5 is the sectional view in drilling portion in the present invention.
1, shank；2, drilling portion；201, apex point；202, secondary sword；21, drilling sword valve；22, drilling chip space；3, neck；4,
Taper cutting portion；41, taper sword valve；43, land；42, taper chip space；5, chip-breaker；6, lead to oil groove.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, invention is further described in detail.
As shown in Figures 1 to 5, the taper drilling reamer of the present embodiment, including cutting portion and shank 1, cutting portion include successively
Drilling portion 2, neck 3 and the taper cutting portion 4 of setting, taper cutting portion 4 are connect with shank 1, and drilling portion 2 includes including two
Drilling sword valve 21 and two drilling chip spaces 22 between two drilling sword valves 21, the end face of drilling sword valve 21, which is equipped with, bores
Point 201 and periphery are equipped with secondary sword 202, and taper cutting portion 4 includes four taper sword valves 41 and four taper chip spaces 42, bore
It cuts chip space 22 and taper chip space 42 all extends to neck 3, and the axial direction between drilling chip space 22 and taper chip space 42
Distance is L, and L > 0 will not interfere between drilling chip space 22 and taper chip space 42.
The taper drilling reamer is separated drilling portion 2 and taper cutting portion 4 by neck 3, and the two is mutually indepedent, drilling portion 2
On be still two drilling chip spaces 22, in order to reach the structure of two chip spaces of chip removal requirement, to will cause its core thickness d1 smaller,
Small core thickness d1 can satisfy drilling requirement for drilling.It can be four taper chip spaces 42 on taper cutting portion 4, without
Need it is corresponding with drilling portion 2, in this way, the core thickness d2 of taper cutting portion 4 can do it is larger, on this basis can by increase
Add the quantity of taper chip space 42 to reach chip removal requirement, taper cutting portion 4 mainly completes reaming and fraising, needs biggish strong
Degree, and the core that the structure can increase taper cutting portion 4 is thick, to increase the intensity of taper cutting portion 4, increases the anti-of cutter
Shake ability reduces the generation of shake line.And the quantity of taper sword valve 41 is also increase accordingly, and is increased taper cutting portion 4 and can be cut
The sword number cut reduces feed engagement, and then can reduce cutting force, is conducive to improve processing quality.
In principle, as long as the axial distance L of drilling chip space 22 and taper chip space 42 is greater than 0, but in reality
In, L value cannot be excessive, will increase the length of cutter entirety, can not be too small, will cause drilling chip space 22 and taper
The interference of chip space 42.For this purpose, L meets: 3mm≤L≤5mm, in the present embodiment, L is preferably 4mm.
In the present embodiment, the periphery of taper sword valve 41 is equipped with land 43, and land 43 intersects with taper chip space 42
The cutting edge of taper cutting portion 4 is formed, the effect of land 43 is the squeezing effect to hole wall, is conducive to improve surface to be machined matter
Amount, for this purpose, its width is that B1 should meet: 0.2mm≤B1≤0.3mm.In the present embodiment, B1 is preferably 0.2mm.Taper sword valve 41
Relief angle be β 2, the relief angle of land 43 is β 1, is met: 2≤25 ° of β 1=0,15 °≤β.The present embodiment is preferably that β 2 is 20 °.
In the present embodiment, each land 43 is equipped with chip-breaker 5, and the length of chip-breaker 5 is L3, the width of taper sword valve 41
For B2, B1 < L3 < B2, i.e. chip-breaker 5 is extended to from land 43 on taper sword valve 41.Chip-breaker 5 can effectively improve disconnected
Bits ability shortens length of chip, is conducive to chip removal, and can effectively reduce cutting resistance, and cutting vibration can be prevented to surface matter
The influence of amount reduces the generation of shake line.The relief angle of chip-breaker 5 is β 3, width B3,3≤10 ° of depth H3,6 °≤β, 0.5mm
≤ B3=2H3≤1mm, in the present embodiment, it is preferred that β 3 is 7 °, B3 0.8mm, H3 0.4mm.
In the present embodiment, the minute of angle of taper chip space 42 is γ, wherein two adjacent minute of angle are γ 1, γ 2, separately
Outer two minute of angle γ and γ 1, γ 2 are symmetrical structure.The design of the not equal part of taper chip space 42 further enhances cutter
Intensity, be effectively reduced shake line generation.In the present embodiment, it is preferred that γ 1=83 °, γ 2=97 °.It needs to illustrate
It is that the minute of angle of four taper chip spaces 42 can also be identical or entirely different.
In the present embodiment, 1 surface of shank is set there are four oil groove 6 is led to, and each logical oil groove 6 is corresponding with each taper chip space 42 and connects
It is logical.Logical oil groove 6 can guarantee that coolant liquid enters in taper chip space 42, increases the cooling effect of taper cutting edge, reaches reduction
Cutting temperature reduces cutting force, protects cutting edge, reduces tool wear, increases cutter life.The type of cooling in drilling portion 2
For inner-cooling structure.The width of logical oil groove 6 is B4, depth H4, is met: 1.5mm≤B4=H4≤3mm, in the present embodiment, preferably
, the value of B4 and H4 are 2mm.
The minute of angle δ of logical oil groove 6 is equal with the minute of angle γ of corresponding taper chip space 42, point with taper chip space 42
Angle γ is spent similarly, wherein it is also symmetrical structure that adjacent minute of angle, which is δ 1 and δ 2, other two minute of angle δ and δ 1 and δ 2,.
The taper of taper cutting portion 4 is α, and α meets: 5 °≤α≤15 °, in the present embodiment, and 9.5 ° of the value of α.
In the present embodiment, the outside diameter in drilling portion 2 is d, and the core thickness in drilling portion 2 is d1, and the core thickness of taper cutting portion 4 is
D2, the core thickness of neck 3 are d3.D3 < d, avoids neck 3 from causing to interfere to drilling portion 2.D1 and d2 meets: 0.25d≤d1≤
0.33d, 0.45d≤d2≤0.6d.In the present embodiment, it is preferred that d 10mm, d1 2.5mm, d2 5mm.
In the present embodiment, the length of drilling chip space 22 is L2, and the length of taper chip space 42 is L4, and the two value takes
Certainly in processed hole depth.The outside diameter of shank 1 is D, and the relationship between D and d meets: D >=d+2*tan (α/2) * L4.
It should be noted that the present embodiment by taking three taper sword valves 41 and three taper chip spaces 42 as an example, removes this implementation
Other than example, the quantity of taper sword valve 41 and four taper chip spaces 42 may be three or four or more.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (10)
1. a kind of taper drilling reamer, including cutting portion and shank (1), it is characterised in that: the cutting portion includes setting gradually
Drilling portion (2), neck (3) and taper cutting portion (4), the taper cutting portion (4) connect with shank (1), the drilling portion (2)
It include two drilling chip spaces (22) including two drilling sword valves (21) and between two drilling sword valves (21), it is described
The end face of drilling sword valve (21) is equipped with apex point (201) and periphery is equipped with secondary sword (202), taper cutting portion (4) packet
Include at least three taper sword valves (41) and three taper chip spaces (42), the drilling chip space (22) and taper chip space (42)
It all extends to neck (3), and the axial distance between drilling chip space (22) and taper chip space (42) is L, L > 0.
2. taper drilling reamer according to claim 1, it is characterised in that: the periphery of the taper sword valve (41) is equipped with
Land (43), the width of the land (43) are B1, are met: 0.2mm≤B1≤0.3mm.
3. taper drilling reamer according to claim 2, it is characterised in that: at least one land (43) is equipped with chip-breaker
(5), the length of the chip-breaker (5) is L3, and the width of the taper sword valve (41) is B2, is met: B1 < L3 < B2.
4. taper drilling reamer according to claim 3, it is characterised in that: the relief angle of the chip-breaker (5) is β 3, and width is
B3, depth H3 meet: 3≤10 ° of 6 °≤β, 0.5mm≤B3=2 H3≤1mm.
5. taper drilling reamer according to any one of claims 1 to 4, it is characterised in that: the taper chip space (42)
Minute of angle be γ, it is at least of different sizes there are two minute of angle γ.
6. taper drilling reamer according to claim 5, it is characterised in that: it is logical that shank (1) surface is equipped at least three
Oil groove (6), each logical oil groove (6) is corresponding with each taper chip space (42) and is connected to.
7. taper drilling reamer according to claim 6, it is characterised in that: the minute of angle δ of the logical oil groove (6) with it is corresponding
The minute of angle γ of taper chip space (42) is equal；The width of the logical oil groove (6) is B4, depth H4, is met: 1.5mm≤B4
=H4≤3mm.
8. taper drilling reamer according to any one of claims 1 to 4, it is characterised in that: the taper sword valve (41)
Relief angle is β 2, and the relief angle of the land (43) is β 1, is met: 2≤25 ° of β 1=0,15 °≤β.
9. taper drilling reamer according to any one of claims 1 to 4, it is characterised in that: the outer circle of the drilling portion (2)
Diameter is d, and the core thickness of the drilling portion (2) is d1, and the core thickness of the taper cutting portion (4) is d2, and the core of the neck (3) is thick
For d3, meet: 0.25d≤d1≤0.33d, 0.45d≤d2≤0.6d, d3 < d.
10. taper drilling reamer according to any one of claims 1 to 4, it is characterised in that: 3mm≤L≤5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910575384.2A CN110405258A (en) | 2019-06-28 | 2019-06-28 | A kind of taper drilling reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910575384.2A CN110405258A (en) | 2019-06-28 | 2019-06-28 | A kind of taper drilling reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110405258A true CN110405258A (en) | 2019-11-05 |
Family
ID=68358590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910575384.2A Pending CN110405258A (en) | 2019-06-28 | 2019-06-28 | A kind of taper drilling reamer |
Country Status (1)
| Country | Link |
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| CN (1) | CN110405258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355333A (en) * | 2020-10-20 | 2021-02-12 | 科益展智能装备有限公司广州分公司 | Cutter and cutter head structure thereof |
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| CN106956049A (en) * | 2017-04-28 | 2017-07-18 | 河北工业大学 | A kind of bimetallic critical point drilling tool and its application method |
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| CN207873206U (en) * | 2018-02-01 | 2018-09-18 | 苏州阿诺精密切削技术有限公司 | A kind of drilling reamer for steering knuckle king pin hole processing |
| CN208341844U (en) * | 2018-05-21 | 2019-01-08 | 常熟市磊王合金工具有限公司 | A kind of shank opens the milling cutter of oil groove |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB212618A (en) * | 1922-12-09 | 1924-03-10 | William Robert Paige | Improvements in and relating to twist drills, reamers and the like tools |
| CN2283538Y (en) * | 1997-03-31 | 1998-06-10 | 河南第一工具厂 | Expansion and reaming compound tool with back guide drill for farm diesel engine |
| CN201201067Y (en) * | 2008-06-20 | 2009-03-04 | 重庆工学院 | Combined drill and reamer |
| CN202539643U (en) * | 2012-02-18 | 2012-11-21 | 沈阳飞机工业（集团）有限公司 | Combined drilling and reaming tool special for machining titanium alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355333A (en) * | 2020-10-20 | 2021-02-12 | 科益展智能装备有限公司广州分公司 | Cutter and cutter head structure thereof |
| CN112355333B (en) * | 2020-10-20 | 2023-08-08 | 科益展智能装备有限公司 | Cutter and cutter head structure thereof |
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Application publication date: 20191105 |