CN105290471B - A kind of Integral impeller blade adaptability method for milling - Google Patents
A kind of Integral impeller blade adaptability method for milling Download PDFInfo
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- CN105290471B CN105290471B CN201510812092.8A CN201510812092A CN105290471B CN 105290471 B CN105290471 B CN 105290471B CN 201510812092 A CN201510812092 A CN 201510812092A CN 105290471 B CN105290471 B CN 105290471B
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Abstract
The present invention discloses a kind of Integral impeller blade adaptability method for milling, it is characterised in that step is as follows：1) measure of detection data treatment, 2) determination in overproof region, 3) the quickly generating of nc program, 4) control deformation.It is an advantage of the invention that：Using blisk adaptability milling technology, to the control of leaf dish machining accuracy stability, the reverse of digital-to-analogue amendment, blade, locally overproof reparation and injury repair have great importance, and improve the crudy of blisk and the once payment qualification rate of product.
Description
Technical field
The present invention relates to field of machining, specifically a kind of method for milling of blade.
Background technology
Blisk is the critical component pushed away than aero-engine high, in aero-engine structure design, engine
The blade of rotor is integrated with leaf dish, tenon, tongue-and-groove and the locking device of traditional connection is saved, this configuration eliminates gas
Flow and flow brought loss in tenon root and tongue-and-groove gap, while alleviating engine weight and number of parts, make engine
Structure is greatly simplified；The multistage compressor that foreign latest is developed is had begun to using full blisk rotor structure.
Overall blade type face is complicated, and dimensional tolerance is very strict with Geometrical Tolerance Principle, especially blade type face during processing
Often there is off-gage phenomenon in profile tolerance, the payment to product brings greater impact；Adaptability milling is using various measurement knots
Really, a kind of technology repaired for overproof region, solves the overproof problem of profile tolerance to a certain extent.
The content of the invention
It is an object of the invention to provide a kind of practicable numerical-control processing method repaired for overproof region, tool
Body technique scheme is as follows：
A kind of Integral impeller blade adaptability method for milling, step is as follows：
1) detection data treatment
Due to there is bad point, it is necessary to by Outlier rejeetion, specific practice is in the data that various measuring methods are measured：Collection leaf
The three coordinate measurement data in body type face, by the data conversion into dat files, set up section and detect number with the dat files in UG
According to curve, editing and processing is carried out to the bad point on curve, make line smoothing；
2) determination in overproof region
Determine the overproof area in blade type face by comparing section detection data curve and theoretical cross section curve and its tolerance range
Domain；
It is unit 1 with section chord length, relatively more overproof the position chord length of Origin And Destination position and total string on section
Ratio long, determines position of the overproof position on width of blade；It is unit 1 with vane overall length degree, relatively more overproof position is in leaf
The length of the Origin And Destination position on leaf length direction and the ratio of vane overall length degree, determine that overproof position is long in blade
Position on degree direction；So that it is determined that particular location of the overproof position on whole blade；
3) nc program is quickly generated
In MAX-PAC, using the sectoring function of software in MAX-PAC, respectively blade it is long with direction wide on be input into
Overproof region and margin value determined by previous step, generate GLS files, import and knife rail file is generated in UG, through postpositive disposal
After generate procedure；
4) measure of control deformation
Select thermal expansion handle of a knife during processing, and it is long using simulation software to calculate most pocket knife for machining area, according to not
Rigidly strengthen blade rigidity using the different paraffin filler filling of proportioning or using foaming agent with blade.
It is an advantage of the invention that：Using blisk adaptability milling technology, to the control of leaf dish machining accuracy stability, number
Locally overproof reparation and injury repair have great importance for the positive reverse of die repair, blade, improve the processing matter of blisk
The once payment qualification rate of amount and product.
Brief description of the drawings
Fig. 1 is the cross-section data curve set up with dat files in UG；
Fig. 2 is the bad point schematic diagram on curve；
Fig. 3 is the curve synoptic diagram after editing and processing；
Fig. 4 is to determine blade type face by comparing section detection data curve and theoretical cross section curve and its tolerance range to surpass
The overproof administrative division map in blade type face that difference region determines；
Fig. 5 is qualified administrative division map；
Fig. 6 is overproof administrative division map；In Fig. 6,1 is Molded Line, 2 is detection line, 3 is tolerance line, and 4 is overproof region；
Fig. 7 is in MAX-PAC operation interface sectional drawings；
Fig. 8 is in MAX-PAC operation interface sectional drawings；
Fig. 9 is machining locus interface sectional drawing；
Figure 10 is machining locus interface sectional drawing；
Figure 11 is machining locus interface sectional drawing.
Specific embodiment
The present invention is illustrated below in conjunction with the accompanying drawings, and as shown in figs. 1-11, the three coordinate measurement data in blade type face are as follows：
Convert thereof into dat file formats as follows：
With dat files set up section detection data curve in UG as shown in figure 1,
Editing and processing is carried out to curved surface bad point (circled portion in Fig. 2), makes curve essentially smooth, as shown in Figure 3；
Determine the overproof area in blade type face by comparing section detection data curve and theoretical cross section curve and its tolerance range
Fig. 4 is seen in the overproof region in blade type face that domain determines；
Compare detection curve after fairing, determine overproof region, be illustrated in figure 5 qualified region, Fig. 6 right sides are overproof area
Domain；
It is unit 1 with section chord length, relatively more overproof the position chord length of Origin And Destination position and total string on section
Ratio long, determines position of the overproof position on width of blade；It is unit 1 with vane overall length degree, relatively more overproof position is in leaf
The length of the Origin And Destination position on leaf length direction and the ratio of vane overall length degree, determine that overproof position is long in blade
Position on degree direction；So that it is determined that particular location of the overproof position on whole blade；
In MAX-PAC, using the sectoring function of software in MAX-PAC, respectively blade it is long with direction wide on be input into
Fig. 7 and Fig. 8 is seen in overproof region determined by previous step with margin value, generates GLS files, imports and knife rail file is generated in UG,
Procedure trajectory diagram is generated after postpositive disposal and sees Fig. 9 to Figure 11.
Control the measure of deformation
Because blade is relatively thin and be long cantilever structure, simultaneously as limited by slype, tool diameter is small and knife
Bar is long, and cutter draw ratio reaches 14, and cutter rigidity is substantially not enough, therefore, blade after cutting force by that can produce chatter and occur
The coupling chatter of serious " allow knife " phenomenon, this cutter and blade has a strong impact on the suface processing quality of blade, makes blade surface
Fish scale-shaped defect is produced, causes the multiple machined surface quality of blade tip section still can not meet the requirement of design drawing roughness value.
Thermal expansion handle of a knife is selected in order to solve cutter stiff problem, during processing, and simulation software has been used for machining area
Calculate most pocket knife long, will allow knife is long to be minimized as far as possible.
Simultaneously in order to reduce part deformation, rigidly using the different paraffin filler filling of proportioning or adopted according to different leaves
Strengthen blade rigidity with foaming agent.
Claims (1)
1. a kind of Integral impeller blade adaptability method for milling, it is characterised in that step is as follows：
1) detection data treatment
Due to there is bad point, it is necessary to by Outlier rejeetion, specific practice is in the data that various measuring methods are measured：Collection blade type
The three coordinate measurement data in face, by the data conversion into dat files, set up section detection data bent with the dat files in UG
Line, editing and processing is carried out to the bad point on curve, makes line smoothing；
2) determination in overproof region
Determine the overproof region in blade type face by comparing section detection data curve and theoretical cross section curve and its tolerance range；
It is unit 1 with section chord length, relatively more overproof the position chord length of Origin And Destination position and total chord length on section
Ratio, determines position of the overproof position on width of blade；It is unit 1 with vane overall length degree, relatively more overproof position is long in blade
The length of the Origin And Destination position on degree direction and the ratio of vane overall length degree, determine overproof position in length of blade side
Upward position；So that it is determined that particular location of the overproof position on whole blade；
3) nc program is quickly generated
In MAX-PAC, using the sectoring function of software in MAX-PAC, respectively blade it is long with direction wide on be input into it is previous
Overproof region and margin value determined by step, generate GLS files, import and knife rail file is generated in UG, raw after postpositive disposal
Into procedure；
4) measure of control deformation
Select thermal expansion handle of a knife during processing, and it is long using simulation software to calculate most pocket knife for machining area, according to different leaves
Piece rigidly strengthens blade rigidity using the different paraffin filler filling of proportioning or using foaming agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510812092.8A CN105290471B (en) | 2015-11-20 | 2015-11-20 | A kind of Integral impeller blade adaptability method for milling |
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| CN201510812092.8A CN105290471B (en) | 2015-11-20 | 2015-11-20 | A kind of Integral impeller blade adaptability method for milling |
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| CN105290471A CN105290471A (en) | 2016-02-03 |
| CN105290471B true CN105290471B (en) | 2017-05-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105710424B (en) * | 2016-04-06 | 2017-11-28 | 哈尔滨飞机工业集团有限责任公司 | A kind of flight simulation ice type foam block numerical-control processing method |
| CN106599406B (en) * | 2016-11-29 | 2019-05-10 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of blade edge mechanical forming process method |
| CN108817488B (en) * | 2018-06-14 | 2020-04-03 | 西北工业大学 | Precision calibration method for blisk composite numerical control milling double-column machine tool |
| CN111259487B (en) * | 2019-12-31 | 2023-10-13 | 苏州千机智能技术有限公司 | Processing method for changing machining allowance of blisk |
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| CN101733618B (en) * | 2008-11-12 | 2011-12-14 | 沈阳黎明航空发动机(集团)有限责任公司 | Numerically controlled drilling and milling processing method for runner of blisk of engine |
| US8826784B2 (en) * | 2011-08-29 | 2014-09-09 | United Technologies Corporation | Airfoil machining method and cutting tools |
| CN103278118B (en) * | 2013-05-20 | 2016-03-02 | 西北工业大学 | Determine the method for closed type integrated leaf dish three coordinate measuring machine gauge head angle |
| CN103586518B (en) * | 2013-12-02 | 2015-11-18 | 哈尔滨理工大学 | A kind of open type integral leaf dish dish milling fluting processing method |
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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 |
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