CN105252028B - Cutter for small size spout tapered cross-section - Google Patents
Cutter for small size spout tapered cross-section Download PDFInfo
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- CN105252028B CN105252028B CN201510757910.9A CN201510757910A CN105252028B CN 105252028 B CN105252028 B CN 105252028B CN 201510757910 A CN201510757910 A CN 201510757910A CN 105252028 B CN105252028 B CN 105252028B
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- cutter
- knife
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- angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2215/00—Details of workpieces
- B23B2215/04—Aircraft components
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention discloses a kind of cutter for small size spout tapered cross-section, the cutter is used to be processed the nozzle opening of variable cross-section spout of aero-engine swirl atomizer and the interior lumen type face for the tapered cross-section being connected with the nozzle opening, the cutter is made up of knife bar, cutter hub, point of a knife, wherein, point of a knife is located at the end of the cutter hub, the cutter hub is between the point of a knife and the knife bar, and the axis projection face of the cutter hub is located at the inside in the axis projection face of the knife bar and is offset to the side at the center in the axis projection face of the knife bar.The cutter of the present invention employs the structure of the cutter body of eccentric setting, not only bigger spatial channel is provided for iron filings discharge and coolant conveying, and bigger cutter hub thickness can be obtained, improve the rigidity of cutter, easily ensure crudy, 5 10 times of processing life-span is provided compared with the prior art, can be substantially met the needs of batch production, be reduced processing cost and percent defective.
Description
Technical field
It is especially a kind of to can be used for aero-engine small size to spray the present invention relates to a kind of cutter of precision optical machinery processing
The precision machined cutter of mouth, more particularly to a kind of cutter for small size spout tapered cross-section.
Background technology
The interior lumen type face that is structurally characterized in that of the spout of aero-engine swirl atomizer is variable cross-section, and variable cross-section and small chi
Very little nozzle opening is connected, and dimensional accuracy is high, mutually has very high technical requirements between cylindrical, end face between various face, uses
The multiple working procedures such as car, milling, mill, pincers, grinding, polishing in traditional machining processes are all difficult processing, especially because jet size
Small, also very little, bad clamping, the size and technical conditions of multiple clamping part are difficult to protect for the locating surface and clamping face size of part
Card, easily makes part rejection.In addition, nozzle opening and inner chamber profile surface quality requirement are high, surface roughness is generally 0.4~
0.2, min-cutter knife once the bad generation of rigidity is shaken, surface quality will be had a strong impact on.And the fine or not direct shadow of surface quality
Ring the flow test performance parameter of swirl atomizer.Conventional method is to ensure roughness, and hand-ground by hand lapping inner chamber
Operation to worker is horizontal high, and the low workload of processing efficiency is big, and size and technical conditions are difficult to control.Furthermore because of spout internal
Moulding surface structure is complicated and size is small, and iron filings are not easy to discharge, and drag hook, scuffing, cut, burr, breach somewhat directly affect centrifugation
Spray angle of nozzle and fuel oil unevenness.Therefore need to provide a kind of processing technology of improvement, and design special shape structure
Cutter, to improve processing efficiency, ensure product quality.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of cutter for small size spout tapered cross-section, to reduce or
The problem of avoiding being formerly mentioned.
In order to solve the above technical problems, the present invention proposes a kind of cutter for small size spout tapered cross-section, it is described
Cutter is used for the nozzle opening of the variable cross-section spout of aero-engine swirl atomizer and the taper section be connected with the nozzle opening
The interior lumen type face in face is processed, a diameter of A of smallest cross-sectional of the nozzle opening, and the maximum cross-section of the tapered cross-section is a diameter of
B, has a transition arc that radius is R between the nozzle opening and the tapered cross-section, the cutter by knife bar, cutter hub,
Point of a knife forms, wherein, point of a knife is located at the end of the cutter hub, and the cutter hub is between the point of a knife and the knife bar, and institute
State cutter hub axis projection face be located at the knife bar axis projection face inside and be offset to the axis projection face of the knife bar
Center side.
Preferably, the cross section of the cutter hub has upper a cambered surface and a lower camber side, the upper cambered surface and it is described under
The arc radius of cambered surface is identical.
Preferably, the arc radius of the upper cambered surface and the lower camber side is 1.5mm.
Preferably, the point of a knife has a point of a knife anterior angle and a point of a knife relief angle, and the point of a knife anterior angle is the point of a knife
The angle to be leaned forward to its machine direction, the point of a knife relief angle are the angle that the point of a knife deviates from its machine direction hypsokinesis, wherein institute
Point of a knife anterior angle is stated as 5 °, the point of a knife relief angle is 15 °.
Preferably, the point of a knife longitudinally has one and tool cutting edge angle of the vertical direction in 15 ° and one and level side along it
Angle is carved in 15 °.
Preferably, the maximum gauge of the point of a knife is less than or equal to the diameter A.
Preferably, the First Transition conical surface is provided between the point of a knife and the cutter hub, the First Transition conical surface is most
Big cone angle is less than or equal to the cone angle of the tapered cross-section.
Preferably, the second transition conical surface is provided between the cutter hub and the knife bar, the second transition conical surface is most
Big cone angle is 40 °.
Preferably, the machine direction of the cutter is along described half at a diameter of A of nozzle opening smallest cross-sectional
The transition arc that footpath is R is fed at the maximum cross-section of a diameter of B tapered cross-section.
Preferably, the point of a knife is downward during the tool sharpening.
The cutter of the present invention employs the structure of the cutter body of eccentric setting, is not only provided for iron filings discharge and coolant conveying
Bigger spatial channel, and bigger cutter hub thickness can be obtained, the rigidity of cutter is improved, easily ensures crudy, phase
5-10 times of processing life-span is provided to prior art, the needs of batch production can be substantially met, processing cost is reduced and gives up
Product rate.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein,
The sectional view of the aero-engine swirl atomizer of a specific embodiment according to the present invention is shown in Fig. 1；
The sectional view of the aero-engine swirl atomizer of another specific embodiment according to the present invention is shown in Fig. 2；
Fig. 3 be shown according to the present invention a specific embodiment cutter be applied to Fig. 1 shown in aero-engine from
The schematic diagram of the processing of heart nozzle；
The projection view of the left side axial direction of cutter shown in Fig. 3 that Fig. 4 is shown；
The machining sketch chart of the cutter hub of the cutter of a specific embodiment according to the present invention is shown in Fig. 5；
The projective amplification figure that point of a knife is local in Fig. 4 is shown in Fig. 6；
The enlarged drawing that point of a knife is local in Fig. 3 is shown in Fig. 7.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now control illustrates this hair
Bright embodiment.Wherein, identical part uses identical label.
Just as described in the background section, the cutter of the present invention for small size spout tapered cross-section can be used for pair
The variable cross-section spout of aero-engine swirl atomizer carries out Precision Machining, due to this type of the tool sharpening of prior art use
Spout when be particularly easy to breaking, and iron filings are not easy to discharge, and percent defective is very high, basically can not be applied to produce in enormous quantities, because
And the invention provides a kind of improved cutter.
Specifically, aero-engine of the improved cutter proposed by the present invention especially suitable for Fig. 1 and Fig. 2 shown types
The interior lumen type face of the nozzle opening 1 of the variable cross-section spout of swirl atomizer and the tapered cross-section 2 being connected with nozzle opening 1 is processed,
Wherein, the sectional view of the aero-engine swirl atomizer of a specific embodiment according to the present invention is shown in Fig. 1, and Fig. 2 shows
Show be according to the present invention another specific embodiment aero-engine swirl atomizer sectional view.
The common ground of aero-engine swirl atomizer in Fig. 1-2 is that have a variable cross-section nozzle opening 1 and and oil spout
The tapered cross-section 2 that hole 1 connects, a diameter of A of smallest cross-sectional of nozzle opening 1, a diameter of B in maximum cross-section of tapered cross-section 2, nozzle opening
There is the transition arc 3 that a radius is R between 1 and tapered cross-section 2.In a specific embodiment, diameter A size range
Between 0.1-1mm, for diameter B size range between 2-4mm, those skilled in the art are envisioned that whole needs add accordingly
The size of the part zone of work is very small, and the cutter of common process is very difficult to touch these regions, even if can touch, generally
The cutter of state is basically concentric structure, and similar to a fine needle, the rigidity of cutter is bad during processing, frangibility in processing
Easily shake knife, and one can only mostly just process 1-2 part knife, and cost performance is low, basically can not be applied to produce in enormous quantities.
The characteristics of needing the part processed based on the present invention, the invention provides a kind of cutter 100, Fig. 3 of Curve guide impeller
It is shown that aero-engine swirl atomizer shown in Fig. 1 is applied to according to the cutter 100 of the specific embodiment of the present invention
The schematic diagram of processing, the projection view of the left side axial direction of cutter 100 shown in Fig. 3 that Fig. 4 is shown is clear to show, does not show in Fig. 4
Aero-engine swirl atomizer in diagram 3.
As shown in Figure 3-4, cutter 100 is made up of knife bar 11, cutter hub 12, point of a knife 13, wherein, point of a knife 13 is located at cutter hub 12
End, cutter hub 12 is between point of a knife 13 and knife bar 11, and the axis projection face of cutter hub 12 is located at the axis projection face of knife bar 11
Inside and be offset to the side at the center in the axis projection face of knife bar 11.That is, usually used with existing conventional techniques same
The cutter of core structure is different, and cutter of the invention employs the structure of the cutter body of eccentric setting, is not only iron filings discharge and coolant
Conveying provides bigger spatial channel, and can obtain bigger cutter hub thickness, improves the rigidity of cutter hub 12, easily ensures
Crudy, one can process 10 parts cutter, can provide 5-10 times of processing life-span compared with the prior art, can be basic
Meet the needs of batch production, reduce processing cost and percent defective.Specifically, if cutter hub 12 uses concentric structure,
In order to concede the space of enough iron filings discharge and coolant conveying, then cutter hub can only use very thin section, rigidity very little.And from
For Fig. 3, it is apparent that employing the cutter hub 12 of eccentric structure, the bottom of cutter hub 12 can vacate whole aperture bottom skies
Between, provide bigger spatial channel for iron filings discharge and coolant conveying, it is not easy to because iron filings obstruction, high temperature can not cool down
Cause cracking of cutter.Simultaneously from Fig. 3 it can also be seen that the superstructure of cutter hub 12 has been substantially filled with most aperture top
Space, the rigidity of cutter hub 12 is substantially increased, so as to which the life-span of cutter hub or even whole cutter is greatly improved.
For ease of the machine-shaping of the cutter hub 12 of above-mentioned eccentric structure, Fig. 5 is shown specific according to of the invention one
The machining sketch chart of the cutter hub of the cutter of embodiment, as shown in figure 5, the cross section of cutter hub 12 has a upper cambered surface 112 and one
Individual lower camber side 113, upper cambered surface 112 are identical with the arc radius of lower camber side 113.In a specific embodiment, the upper cambered surface
112 and the arc radius of lower camber side 113 be 1.5mm.That is, processing when, added using two intersecting circular machined surfaces
Work, such as upper cambered surface 112 is gone out with 1.5mm circular machined surface car first, then translate a segment distance can 1.5mm circle
Machined surface goes out lower camber side 113 with sample car, and locating and machining is all particularly convenient, especially suitable for the present invention it is this only be used only 10 times just
The production of consumable accessory changed is needed, greatly reduces the production cost of cutter.
The thin portion structure of cutter is illustrated referring to cutter partial enlarged view.Wherein, Fig. 4 is shown in Fig. 6
The local projective amplification figure of middle point of a knife, as shown in fig. 6, point of a knife 13 has a point of a knife anterior angle 132 and a point of a knife relief angle 133,
Point of a knife anterior angle 132 is the angle that point of a knife 13 leans forward to its machine direction, and point of a knife relief angle 133 is after point of a knife 13 deviates from its machine direction
The angle inclined, in a specific embodiment, point of a knife anterior angle 132 are 5 °, and point of a knife relief angle 133 is 15 °.Above-mentioned point of a knife anterior angle 132
The 5 ° of wearabilities that can improve cutter to lean forward are arranged to, point of a knife relief angle 133 is arranged to 15 ° and can avoided in order to iron filings chip removal
Iron filings obstruction scratches machined surface.
In fact from processing technology, present invention also offers a great improvement, that is, when processing, cutter 100
Machine direction for be R along radius at a diameter of A of nozzle opening 1 smallest cross-sectional taper of the transition arc 3 to a diameter of B
Fed at the maximum cross-section in section 2, that is, reverse hook boring is carried out outward from interior, and in order to adapt to adding for this reversely hook boring
Work technique, in a specific embodiment, point of a knife 13 is downward when cutter 100 is processed, so as to make use of knife back part eccentric
Rigidity, improve life-span of cutter.That is, routine techniques processing hollowed parts are all from processing inside outside, but for this
For the processing for inventing this small size spout tapered cross-section, because size is too small and the required precision of type face is very high, from outside inside
Iron filings caused by processing can scratch finished type face, and the trickle cut of the such inner cavity of component of nozzle can influence component
The performance parameters such as the flow of fuel nozzle, flow direction, unevenness, so inner mold face never allows any scuffing.Therefore the present invention
The technique for employing reverse hook boring, what iron filings discharged contact outward caused by processing is still unprocessed type face, thus is overcome
The defects of prior art, improve machining accuracy and yield rate.
The enlarged drawing that point of a knife is local in Fig. 3 is shown in Fig. 7, as shown in fig. 7, point of a knife 13 longitudinally has one along it with hanging down
Nogata carves angle 137 in 15 ° of tool cutting edge angle 136 and one and horizontal direction in 15 °.Tool cutting edge angle 136 and carve angle 137 and select together
The angle of sample is easy to the processing of cutter, therefore can reduce the processing cost of cutter.In another specific embodiment, point of a knife 13
Maximum gauge be less than or equal to the diameter A.Because the smallest cross-sectional of nozzle opening 1 leaves allowance, and due to tool cutting edge angle 136
Presence, thus the smallest cross-sectional of the maximum gauge position of point of a knife 13 and a diameter of A nozzle opening 1 be offset one section away from
From, it will not also be interfered so even the two size is identical, and this maximum gauge of the point of a knife 13 set substantially reaches
The maximum rigidity thickness arrived under not interference condition, improve the structural life-time of point of a knife.
In a specific embodiment, the First Transition conical surface 125, First Transition cone are provided between point of a knife 13 and cutter hub 12
The maximum cone angle in face 125 is less than or equal to the cone angle of tapered cross-section 2.I.e. from figure 7, it is seen that the First Transition conical surface 125 is a change
The structure of cone angle, in order to avoid cutter disturbs, therefore set the cone angle that its maximum cone angle is less than or equal to tapered cross-section 2.
In another specific embodiment, the second transition conical surface 115, the second transition are provided between cutter hub 12 and knife bar 11
The maximum cone angle of the conical surface 115 is 40 °.Interference of the structure design of the present embodiment also for cutter when avoiding processing.
It will be appreciated by those skilled in the art that although the present invention is described in the way of multiple embodiments,
It is that not each embodiment only includes an independent technical scheme.So narration is used for the purpose of for the sake of understanding in specification,
The skilled in the art should refer to the specification as a whole is understood, and by technical scheme involved in each embodiment
The modes of different embodiments can be mutually combined into understand protection scope of the present invention by regarding as.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, equivalent variations, modification and the combination made on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention all should be belonged to.
Claims (9)
1. a kind of cutter for small size spout tapered cross-section, the cutter (100) is used for aero-engine swirl atomizer
The nozzle opening (1) of variable cross-section spout and the interior lumen type face for the tapered cross-section (2) being connected with the nozzle opening (1) added
Work, smallest cross-sectional a diameter of A of the nozzle opening (1), a diameter of B in maximum cross-section of the tapered cross-section (2), the nozzle opening
(1) there is the transition arc (3) that a radius is R between the tapered cross-section (2), it is characterised in that diameter A size model
Enclose between 0.1-1mm, diameter B size range between 2-4mm, the cutter (100) by knife bar (11), cutter hub (12),
Point of a knife (13) forms, wherein, point of a knife (13) is located at the end of the cutter hub (12), and the cutter hub (12) is located at the point of a knife (13)
Between the knife bar (11), and the axis projection face of the cutter hub (12) is located at the interior of the axis projection face of the knife bar (11)
Portion and the side for being offset to the center in the axis projection face of the knife bar (11), in processing, the processing side of the cutter (100)
To at a diameter of A of nozzle opening (1) smallest cross-sectional along the transition arc (3) that radius is R to a diameter of B tapered cross-section
(2) fed at maximum cross-section, that is, reverse hook boring is carried out outward from interior.
2. cutter as claimed in claim 1, it is characterised in that the cross section of the cutter hub (12) has a upper cambered surface
(112) and a lower camber side (113), the upper cambered surface (112) are identical with the arc radius of the lower camber side (113).
3. cutter as claimed in claim 2, it is characterised in that the circular arc of the upper cambered surface (112) and the lower camber side (113)
Radius is 1.5mm.
4. cutter as claimed in claim 1, it is characterised in that the point of a knife (13) has a point of a knife anterior angle (132) and one
Individual point of a knife relief angle (133), the angle that the point of a knife anterior angle (132) is leaned forward for the point of a knife (13) to its machine direction, the knife
Sharp relief angle (133) is the angle that the point of a knife (13) deviates from its machine direction hypsokinesis, wherein the point of a knife anterior angle (132) is 5 °,
The point of a knife relief angle (133) is 15 °.
5. cutter as claimed in claim 1, it is characterised in that the point of a knife (13) longitudinally has one and vertical direction along it
In 15 ° of tool cutting edge angles (136) and one and horizontal direction angle (137) is carved in 15 °.
6. cutter as claimed in claim 5, it is characterised in that the maximum gauge of the point of a knife (13) is less than or equal to the diameter
A。
7. cutter as claimed in claim 1, it is characterised in that is provided between the point of a knife (13) and the cutter hub (12)
The one transition conical surface (125), the maximum cone angle of the First Transition conical surface (125) are less than or equal to the cone angle of the tapered cross-section (2).
8. cutter as claimed in claim 1, it is characterised in that is provided between the cutter hub (12) and the knife bar (11)
The two transition conical surfaces (115), the maximum cone angle of the second transition conical surface (115) is 40 °.
9. cutter as claimed in claim 1, it is characterised in that the point of a knife (13) is downward during cutter (100) processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757910.9A CN105252028B (en) | 2015-11-10 | 2015-11-10 | Cutter for small size spout tapered cross-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510757910.9A CN105252028B (en) | 2015-11-10 | 2015-11-10 | Cutter for small size spout tapered cross-section |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105252028A CN105252028A (en) | 2016-01-20 |
| CN105252028B true CN105252028B (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510757910.9A Active CN105252028B (en) | 2015-11-10 | 2015-11-10 | Cutter for small size spout tapered cross-section |
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| CN (1) | CN105252028B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513723A (en) * | 2016-11-25 | 2017-03-22 | 沈阳黎明航空发动机(集团)有限责任公司 | Deep cavity turning cutter of curved surface structure and use method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201659296U (en) * | 2009-11-10 | 2010-12-01 | 天津市威斯曼光学仪器有限公司 | Splitting multi-stage multi-cutter spacing adjustable indexable boring cutter |
| CN201760617U (en) * | 2010-08-06 | 2011-03-16 | 威士精密工具(上海)有限公司 | CBN pore boring and milling cutter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5848862A (en) * | 1997-06-24 | 1998-12-15 | Antoun; Gregory S. | Boring bar with reverse mounted insert |
| CN200963686Y (en) * | 2006-11-09 | 2007-10-24 | 济南一机床集团有限公司 | Adjustable boring cutter device |
| CN102441682A (en) * | 2010-10-10 | 2012-05-09 | 孙生强 | Bidirectional side tool and process method thereof |
| CN102672215B (en) * | 2012-05-22 | 2014-10-01 | 珠海格力电器股份有限公司 | Trimming tool for pipe orifice and tool bit thereof |
-
2015
- 2015-11-10 CN CN201510757910.9A patent/CN105252028B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201659296U (en) * | 2009-11-10 | 2010-12-01 | 天津市威斯曼光学仪器有限公司 | Splitting multi-stage multi-cutter spacing adjustable indexable boring cutter |
| CN201760617U (en) * | 2010-08-06 | 2011-03-16 | 威士精密工具(上海)有限公司 | CBN pore boring and milling cutter |
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| CN105252028A (en) | 2016-01-20 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
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