CN103611974A - Machining method for large-size axial flow type integral impeller - Google Patents

Machining method for large-size axial flow type integral impeller Download PDF

Info

Publication number
CN103611974A
CN103611974A CN201310626731.2A CN201310626731A CN103611974A CN 103611974 A CN103611974 A CN 103611974A CN 201310626731 A CN201310626731 A CN 201310626731A CN 103611974 A CN103611974 A CN 103611974A
Authority
CN
China
Prior art keywords
milling
processing
impeller
blade
adopts
Prior art date
Application number
CN201310626731.2A
Other languages
Chinese (zh)
Other versions
CN103611974B (en
Inventor
张积瑜
孙玉民
陈亚莉
杨易
刘愈
Original Assignee
沈阳黎明航空发动机(集团)有限责任公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 沈阳黎明航空发动机(集团)有限责任公司 filed Critical 沈阳黎明航空发动机(集团)有限责任公司
Priority to CN201310626731.2A priority Critical patent/CN103611974B/en
Publication of CN103611974A publication Critical patent/CN103611974A/en
Application granted granted Critical
Publication of CN103611974B publication Critical patent/CN103611974B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention aims to provide a machining method for a large-size axial flow type integral impeller. The machining method is characterized by adopting an open type and close type impeller combined machining method to machine, wherein an open type partial milling method of the impeller comprises the steps of carrying out open type impeller rough slotting in a blade overlapping shaft direction and carrying out finish-milling machining by spirally milling; a closed type partial milling method of the impeller comprises the steps of roughly slotting along the axis direction of an engine and carrying out reciprocating type finish-milling machining; namely, the front half section of a blade profile is subjected to slotting and spiral milling, and the back half section to a blade root of the blade profile are subjected to butt joint slotting and reciprocating type milling. According to the method, the machining efficiency of the large-size axial flow type integral impeller can be improved, the surface quality of a blade part is improved and the production cost is reduced.

Description

A kind of large-scale axial flow type integral impeller processing method
Technical field
The invention belongs to mechanical manufacturing field, a kind of novel processing method of large-scale axial flow type integral wheel is provided especially.
Background technology
Raising along with the requirement of aero-engine thrust-weight ratio, the application of large-scale axial flow type integral wheel is more and more extensive, although large-scale axial flow type integral wheel is open architecture, but due to blade dimensions super large, the about 300mm of blade maximum length, the about 219mm of greatest width dimension, 62 ° of Maximal twist angles, easy stress deformation, opening character is poor, it is a kind of typical wide string, large torsional angle, long cantilever, narrow dark cavity configuration, its NC Milling difficulty is very large, processing characteristic has: tool draw ratio is large (as adopted routinely the one-sided milling processing technology of open type leaf dish, milling cutter is 350mm left and right), process Leaf cantilever and cutter coupled vibrations are very serious, large torsional angle and narrow dark cavity configuration have caused tool to produce sharply reducing of severe interference and tool diameter, indirectly increased again cutter draw ratio simultaneously.Along with the sharply increase of cutter draw ratio, the coupled vibrations of cutter and blade cantilever has seriously reduced the milling crudy of blade surface, has reduced working (machining) efficiency, simultaneously, due to the increasing of vibration in processing, cutter life also sharply shortens, and has directly increased again the cost of charp tool.
Summary of the invention
The object of the present invention is to provide a kind of large-scale axial flow type integral impeller processing method, the method can improve large-scale axial flow type integral wheel working (machining) efficiency, improves blade part site surface quality and reduces production costs.
The present invention specifically provides a kind of large-scale axial flow type integral impeller processing method, it is characterized in that, adopt open type and double shrouded wheel combinational processing method to process, wherein the open type part milling method of impeller is: the processing of slightly slot+helical milling of blade stacking direction of principal axis unshrouded impeller finish-milling, impeller enclosed part milling method is: the slightly slot+reciprocating finish-milling processing of engine axis direction.In the slot+helical milling of first half section of blade profile, the second half section of blade profile to blade root is docking fluting+back and forth milling.
Thick fluting: because material removing rate is larger, increased blade position machining stress, for the loss that after the heat treatment that reduces to eliminate stress, part deformation causes, stayed 2mm surplus at runner and each surface of blade.Open type part milling method is that blade stacking direction of principal axis is slightly slotted (account for machining area 60%), and enclosed part milling method adopts engine axis direction to bore milling overstriking fluting (account for 40% of machining area, comprise runner position).
Finish-milling processing: be divided into semifinishing and fine finishining two parts.Half finish-milling stays 0.2mm surplus to finish-milling, considers in process the cutter relieving phenomenon causing due to the wearing and tearing of cutter and along with the increase of cutter draw ratio, and finish-milling adds man-hour blade and adopts and process without surplus mode.Open type part milling method is that blade stacking direction of principal axis spiral half finish-milling adds spiral finish-milling (account for machining area 65%), enclosed part milling method adopts reciprocating half finish-milling of engine axis direction to add reciprocating finish-milling processing (account for 35% of machining area, comprise runner position).
In impeller open type part milling process, because blade front and rear edge part cutter shaft changes too greatly, cutter is accepted comparatively complicated, seriously shortened cutter life, therefore, thick fluting does not comprise the processing of blade front and rear edge, and blade front and rear edge adopts four swords or the six sword whole hard alloy rose cutters with 4 ° of taperings to carry out finish-milling processing.The advantage that adopts 4 ° of taper ball head milling cutters is that this milling cutter can return mill and repeatedly uses, and returns mill qualification rate and can reach 100%.Greatly reduce milling process tool cost.
The specific process of large-scale axial flow type integral impeller processing method of the present invention is as follows:
(1) rough mill open type processing: 1. region adopts blade along the thick fluting processing of long-pending folded direction of principal axis 4, adopt little cutting-in, the processing of roughing feed facing cut process technology, the thick fluting of this part does not comprise the processing of blade front and rear edge, and front and rear edge adopts rose cutter to process along blade profile direction polishing;
Adopt little cutting-in, roughing feed facing cut process technology, replaced former brill milling and added helical milling polishing processing mode.By verification experimental verification, the unidirectional milling of taper seat: blade back consumes minimumly along contrary cutter block sheet from trailing edge to leading edge, after first leaf basin, and linear velocity can reach 60m/min.But because blade front and rear edge part cutter shaft changes too greatly, cutter is stressed comparatively complicated, has seriously shortened the cutter life of face milling cutters, and therefore, the thick fluting of this part does not comprise the processing of blade front and rear edge, and front and rear edge adopts rose cutter to process along blade profile direction polishing.Face milling cutters cutter structure figure is shown in accompanying drawing 2, and tool track is shown in accompanying drawing 3.
(2) the enclosed processing of rough milling: 2. 3. region adopts along the 5 docking millings of engine axis direction, adopt and bore the processing of milling overstriking mode of grooving, the interference problem at non-cutting position while boring milling processing and be for fear of thick fluting, thick fluting adopts little cutting-in, roughing feed facing cut Surface Finishing, adopt U-shaped cutter path, linear velocity can reach 60m/min, and tool track is shown in accompanying drawing 4;
(3) finish-milling open type processing: 1. region adopts along the long-pending folded spiral processing of direction of principal axis 4, all adopts Φ 16 with four swords or the processing of six sword whole hard alloy rose cutters of 4 ° of taperings, and linear velocity can reach 140m/min.Accompanying drawing 5 is shown in by four swords or six sword whole hard alloy rose cutter structure charts with 4 ° of taperings, and tool track is shown in accompanying drawing 6;
(4) enclosed of finish-milling processing: 2. 3. region adopts along the reciprocating processing of engine axis direction 5, adopts four swords of 4 ° of taperings or six sword whole hard alloy rose cutters back and forth to process, and linear velocity can reach 140m/min.Tool track is shown in accompanying drawing 7.
The present invention adopts the combination numerical control Milling Process technique of unshrouded impeller+double shrouded wheel to meet long cantilever, large torsional angle, wide string blade and non-linear runner open type integral Impeller Machining demand, and the rough milling cycle improves 50%, and the finish-milling process-cycle improves 55%.This scheme has advantages of the Tool Design of saving and manufacturing cost and cycle, and strengthens cutter rigidity.Finish-milling adopts the whole hard sphere cutter of tapering can carry out 20 above returning and sharpens use, saves finish-milling cutter expense and reaches more than 60%, and total cutter cost saving is in 35% left and right.Finish-milling rear surface roughness is brought up to present Ra1.6 by original Ra3.2.
Accompanying drawing explanation
Fig. 1 machining area and direction schematic diagram;
Fig. 2 facing cut cutter and blade enlarged drawing;
Fig. 3 open type face milling cutters tool track of slightly slotting;
Fig. 4 enclosed face milling cutters tool track of slightly slotting;
4 ° of taper ball head milling cutter construction schematic diagrames of Fig. 5 band;
Fig. 6 finish-milling open auger milling tool track;
The reciprocating tool track of Fig. 7 finish-milling open type.
The specific embodiment
Embodiment 1
Large-scale axial flow type integral wheel specific process is as follows:
(1) rough mill open type processing: as shown in Figure 1,1. region adopts blade along the thick fluting processing of long-pending folded direction of principal axis 4, adopt little cutting-in, the processing of roughing feed facing cut process technology, the thick fluting of this part does not comprise the processing of blade front and rear edge, and front and rear edge adopts rose cutter to process along blade profile direction polishing; Face milling cutters cutter structure figure used is shown in Fig. 2, and tool track is shown in Fig. 3.
(2) the enclosed processing of rough milling: 2. 3. region adopts along the 5 docking millings of engine axis direction, adopts and bores the processing of milling overstriking mode of grooving, and thick fluting adopts little cutting-in, roughing feed facing cut Surface Finishing, adopts U-shaped cutter path, and tool track is shown in Fig. 4;
(3) finish-milling open type processing: 1. region adopts along the long-pending folded spiral processing of direction of principal axis 4, all adopts Φ 16 with four swords or the processing of six sword whole hard alloy rose cutters (structure is shown in Fig. 5) of 4 ° of taperings, and tool track is shown in Fig. 6;
(4) enclosed of finish-milling processing: 2. 3. region adopts along the reciprocating processing of engine axis direction 5, adopts four swords of 4 ° of taperings or six sword whole hard alloy rose cutters back and forth to process, and tool track is shown in Fig. 7.
Machining obtains its surface roughness of impeller and brings up to Ra1.6 by original Ra3.2, and whole working (machining) efficiency improves 50%.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.

Claims (6)

1. a large-scale axial flow type integral impeller processing method, it is characterized in that, adopt unshrouded impeller and double shrouded wheel combination milling method to process, wherein the open type part milling method of impeller is: the processing of slightly slot+helical milling of blade stacking direction of principal axis unshrouded impeller finish-milling, impeller enclosed part milling method is: the slightly slot+reciprocating finish-milling processing of engine axis direction.
2. according to large-scale axial flow type integral impeller processing method described in claim 1, it is characterized in that: when thick fluting, at runner and each surface of blade, stay 2mm surplus.
3. according to large-scale axial flow type integral impeller processing method described in claim 1, it is characterized in that: described finish-milling processing is divided into semifinishing and fine finishining two parts, wherein semifinishing is stayed 0.2mm surplus to fine finishining, and during fine finishining, blade adopts and processes without surplus mode.
4. according to large-scale axial flow type integral impeller processing method described in claim 1, it is characterized in that: in the open type part milling method of impeller, thick fluting does not comprise the processing of blade front and rear edge.
5. according to large-scale axial flow type integral impeller processing method described in claim 1 or 4, it is characterized in that: in the open type part milling method of impeller, blade front and rear edge adopts four swords or the six sword whole hard alloy rose cutters with 4 ° of taperings to carry out finish-milling processing.
6. according to large-scale axial flow type integral impeller processing method described in claim 1, it is characterized in that, specific process is as follows:
(1) rough mill open type processing: 1. region adopts blade along the thick fluting processing of long-pending folded direction of principal axis 4, adopt little cutting-in, the processing of roughing feed facing cut process technology, the thick fluting of this part does not comprise the processing of blade front and rear edge, and front and rear edge adopts rose cutter to process along blade profile direction polishing;
(2) the enclosed processing of rough milling: 2. 3. region adopts along the 5 docking millings of engine axis direction, adopts and bores the processing of milling overstriking mode of grooving, and thick fluting adopts little cutting-in, roughing feed facing cut Surface Finishing, adopts U-shaped cutter path;
(3) finish-milling open type processing: 1. region adopts along the long-pending folded spiral processing of direction of principal axis 4, all adopts Φ 16 with four swords or the processing of six sword whole hard alloy rose cutters of 4 ° of taperings;
(4) enclosed of finish-milling processing: 2. 3. region adopts along the reciprocating processing of engine axis direction 5, adopts four swords of 4 ° of taperings or six sword whole hard alloy rose cutters back and forth to process.
CN201310626731.2A 2013-11-28 2013-11-28 A kind of large-scale axial flow type integral impeller processing method Active CN103611974B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310626731.2A CN103611974B (en) 2013-11-28 2013-11-28 A kind of large-scale axial flow type integral impeller processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310626731.2A CN103611974B (en) 2013-11-28 2013-11-28 A kind of large-scale axial flow type integral impeller processing method

Publications (2)

Publication Number Publication Date
CN103611974A true CN103611974A (en) 2014-03-05
CN103611974B CN103611974B (en) 2016-06-01

Family

ID=50162708

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310626731.2A Active CN103611974B (en) 2013-11-28 2013-11-28 A kind of large-scale axial flow type integral impeller processing method

Country Status (1)

Country Link
CN (1) CN103611974B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588681A (en) * 2014-11-11 2015-05-06 沈阳黎明航空发动机(集团)有限责任公司 Turning technique for long spoke portion of integral impeller
CN104668916A (en) * 2015-01-28 2015-06-03 上海应用技术学院 Method for improving manufacturing precision of large-curvature curved-surface closed integral impeller made of aluminum alloy material
CN105033338A (en) * 2015-08-10 2015-11-11 湖北三江航天红阳机电有限公司 Machining method for forming centripetal notches in titanium alloy and glass fiber reinforced plastic composite conical part
CN105345414A (en) * 2015-12-08 2016-02-24 哈尔滨东安发动机(集团)有限公司 Machining method of internal flow passage of impeller cover applied to aero-engine
CN106216748A (en) * 2016-08-04 2016-12-14 苏州千机智能技术有限公司 Open type integrated impeller blade milling method
CN106271459A (en) * 2016-09-20 2017-01-04 哈尔滨东安发动机(集团)有限公司 The processing method of complex-curved integral wheel
CN107931678A (en) * 2017-11-24 2018-04-20 中国航发沈阳黎明航空发动机有限责任公司 A kind of half casing taper surface high speed milling method of high temperature alloy point
CN108829030A (en) * 2018-05-30 2018-11-16 昆明理工大学 A kind of feature knife rail optimization method of integral wheel blade root
CN110744112A (en) * 2019-11-26 2020-02-04 中国航发沈阳黎明航空发动机有限责任公司 Vibration reduction milling method for large-torsion variable-fillet blade profile of integral impeller
CN111113092A (en) * 2019-12-27 2020-05-08 中国航发湖南南方宇航工业有限公司 Method for machining impeller blades under clamping of integral impeller clamp

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001300812A (en) * 2000-04-24 2001-10-30 Honda Motor Co Ltd Work method for impeller
JP2002036020A (en) * 2000-07-31 2002-02-05 Ishikawajima Harima Heavy Ind Co Ltd Machining method of large impeller
CN101590587A (en) * 2008-05-29 2009-12-02 上海电气集团股份有限公司 A kind of integral impeller processing method
CN101733461A (en) * 2008-11-12 2010-06-16 沈阳黎明航空发动机(集团)有限责任公司 Sectional rigid milling process for integrated impeller blade
EP2275218A1 (en) * 2009-07-14 2011-01-19 Alstom Technology Ltd Method for processing the rotor of a turbine and device for implementing the method
CN101966604A (en) * 2010-08-13 2011-02-09 沈阳黎明航空发动机(集团)有限责任公司 Method for composite machining of blisk flow passage
CN102085576A (en) * 2010-12-29 2011-06-08 沈阳黎明航空发动机(集团)有限责任公司 Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller
CN102489761A (en) * 2011-12-22 2012-06-13 上海交通大学 High-efficiency machining method for half-open centrifugal type integral impeller with long and short blades
CN102806380A (en) * 2012-08-27 2012-12-05 西北工业大学 Method for compositely roughing open type integral vane disk passage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001300812A (en) * 2000-04-24 2001-10-30 Honda Motor Co Ltd Work method for impeller
JP2002036020A (en) * 2000-07-31 2002-02-05 Ishikawajima Harima Heavy Ind Co Ltd Machining method of large impeller
CN101590587A (en) * 2008-05-29 2009-12-02 上海电气集团股份有限公司 A kind of integral impeller processing method
CN101733461A (en) * 2008-11-12 2010-06-16 沈阳黎明航空发动机(集团)有限责任公司 Sectional rigid milling process for integrated impeller blade
EP2275218A1 (en) * 2009-07-14 2011-01-19 Alstom Technology Ltd Method for processing the rotor of a turbine and device for implementing the method
CN101966604A (en) * 2010-08-13 2011-02-09 沈阳黎明航空发动机(集团)有限责任公司 Method for composite machining of blisk flow passage
CN102085576A (en) * 2010-12-29 2011-06-08 沈阳黎明航空发动机(集团)有限责任公司 Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller
CN102489761A (en) * 2011-12-22 2012-06-13 上海交通大学 High-efficiency machining method for half-open centrifugal type integral impeller with long and short blades
CN102806380A (en) * 2012-08-27 2012-12-05 西北工业大学 Method for compositely roughing open type integral vane disk passage

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588681A (en) * 2014-11-11 2015-05-06 沈阳黎明航空发动机(集团)有限责任公司 Turning technique for long spoke portion of integral impeller
CN104668916A (en) * 2015-01-28 2015-06-03 上海应用技术学院 Method for improving manufacturing precision of large-curvature curved-surface closed integral impeller made of aluminum alloy material
CN105033338A (en) * 2015-08-10 2015-11-11 湖北三江航天红阳机电有限公司 Machining method for forming centripetal notches in titanium alloy and glass fiber reinforced plastic composite conical part
CN105345414A (en) * 2015-12-08 2016-02-24 哈尔滨东安发动机(集团)有限公司 Machining method of internal flow passage of impeller cover applied to aero-engine
CN106216748A (en) * 2016-08-04 2016-12-14 苏州千机智能技术有限公司 Open type integrated impeller blade milling method
CN106216748B (en) * 2016-08-04 2018-02-09 苏州千机智能技术有限公司 Open type integrated impeller blade milling method
CN106271459A (en) * 2016-09-20 2017-01-04 哈尔滨东安发动机(集团)有限公司 The processing method of complex-curved integral wheel
CN107931678A (en) * 2017-11-24 2018-04-20 中国航发沈阳黎明航空发动机有限责任公司 A kind of half casing taper surface high speed milling method of high temperature alloy point
CN108829030A (en) * 2018-05-30 2018-11-16 昆明理工大学 A kind of feature knife rail optimization method of integral wheel blade root
CN110744112A (en) * 2019-11-26 2020-02-04 中国航发沈阳黎明航空发动机有限责任公司 Vibration reduction milling method for large-torsion variable-fillet blade profile of integral impeller
CN110744112B (en) * 2019-11-26 2020-08-28 中国航发沈阳黎明航空发动机有限责任公司 Vibration reduction milling method for large-torsion variable-fillet blade profile of integral impeller
CN111113092A (en) * 2019-12-27 2020-05-08 中国航发湖南南方宇航工业有限公司 Method for machining impeller blades under clamping of integral impeller clamp

Also Published As

Publication number Publication date
CN103611974B (en) 2016-06-01

Similar Documents

Publication Publication Date Title
EP1925386B1 (en) Drill bit with high performance for chip removal
CN105034076B (en) A kind of dedicated tool of the efficient drilling of fibre reinforced composites
CN103111812B (en) The processing method of steam turbine axial blade
CN104999118B (en) High-efficiency special drilling head for drilling holes in carbon fiber composite material
JP5878086B2 (en) Cutting tool manufacturing method
CN201405114Y (en) End milling cutter with unequal helical angles
CN203171049U (en) Anti-interference conical ball end mill for blisk
CN107971714B (en) A kind of high temperature alloy entirety leaf joint blade part milling fluting processing method
CN103008741B (en) Machining process of middle-long thin-wall blades
CN102126042B (en) Rough machining method of integrated three-dimensional flow blade wheel
CN108098255B (en) A kind of TA15 titanium alloy frame class parts machining process
CN103121121B (en) Indexable drilling bore chamfer compound cutter
CN105499665B (en) For the multi-ladder multiple-cutting-edge tool of laminated construction part entirety drilling
CN102416494B (en) Micro drill and processing method thereof
CN102756252A (en) Method for machining slotted holes on carbon fiber laminated boards
CN103506820B (en) One scraps R6 taper ball head slotting cutter reuse method
CN103990840B (en) The two-way relict amount of blade method for milling
CN206702276U (en) One kind becomes helicla flute double tapered angle laminated construction drilling integrated tool
CN104096890A (en) Numerical control machining method for aviation blades
CN102962513A (en) High-accuracy mortise broaching processing method for turbine disk made of powder high-temperature alloy material
CN102728882B (en) Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy
CN103071853A (en) Broaching method and special tool for high-accuracy small-sized mortises
CN103433540A (en) Axial milling method for titanium alloy slot cavity structure
CN201614906U (en) Support-type milling shoes
CN202180241U (en) Universal type multi-blade pointed drill

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6

Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company

Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6

Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City