CN102145354B - Unigraphics NX-based blade profile software reshaping method - Google Patents
Unigraphics NX-based blade profile software reshaping method Download PDFInfo
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- CN102145354B CN102145354B CN2010105515472A CN201010551547A CN102145354B CN 102145354 B CN102145354 B CN 102145354B CN 2010105515472 A CN2010105515472 A CN 2010105515472A CN 201010551547 A CN201010551547 A CN 201010551547A CN 102145354 B CN102145354 B CN 102145354B
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Abstract
The invention discloses a Unigraphics-NX (UG)-based blade profile software reshaping method. The method can effectively solve the problems that the orthopedic effect is instable and the deformation rebound is easily caused because the conventional mechanical orthopedics mainly depend on human experience, and can solve the problem that a mechanical orthopedic method cannot be used for blade profile reshaping due to special blade materials. The method comprises the following steps of: pre-processing a blade profile, and detecting the size of an inner arc and a rear arc of each gear of the pre-processed blade profile; analyzing the detection report, and listing deformation of comparing the steam admission side, the middle part and the steam outlet side of the inner arc and the rear arc of the profile line of each gear with the designed theoretical value of a blade; determining the correction quantity of the profile line of each gear according to the deformation, and performing different bias on the profile line of each gear according to the correction quantity to realize profile software reshaping; performing fairing and rounding on the software reshaped profile line data to generate a new model serving as a molding, compiling and processing program, and processing and detecting the profile according to the new program; if the blade profile processed by using the new program still does not accord with the requirement, continuing the adjustment; and if the detection result meets the process requirement, finishing the software reshaping operation, and performing batch production.
Description
Technical field
The present invention relates to blade profile shaping processing technique field, be specially a kind of blade profile software shaping methods based on UG.
Background technology
In the blade manufacturing, exist a large amount of profile problem on deformation; Usually can adopt the orthopedic way of machinery to make finished product reach the detection requirement; Generally be on framework, to detect earlier to confirm profile deflection and position, the workman rule of thumb determines certain position of blade profile as fulcrum and use great pressure orthopedic to it then, but mechanical orthopedic many limitation that have; The one, the effect instability that machinery is orthopedic; Not only place one's entire reliance upon workman's experience and technology, and if the orthopedic back of machinery do not make stress removing, the phenomenon of bounce-back still can appear being out of shape after orthopedic a period of time; The 2nd, if orthopedic just being difficult to of very tight its machinery of profile tolerance carried out; The 3rd, it is orthopedic that some special material (as: titanium alloy etc.) does not allow to carry out machinery.
Summary of the invention
To the problems referred to above; The invention provides a kind of blade profile software shaping methods based on UG; Thereby it can effectively solve the artificial experience of mechanical in the past orthopedic main dependence and carry out causing unstable, the orthopedic problem that is prone to the distortion bounce-back of orthopedic effect, and can solve because of the special problem that can not use mechanical straightening method to carry out the blade profile shaping of blade material.
Its technical scheme is such, it is characterized in that: it may further comprise the steps: at first blade profile is carried out preprocessing and detect said each gear inner arc of preprocessing rear blade profile, back of the body arc size; Analyze above-mentioned examining report then, list steam admission side, middle part, the steam output side three parts deflection of comparing of every grade of molded lines inner arc, back of the body arc with blade design theory value; According to the deflection of every grade of molded lines, confirm the correction of every grade of molded lines again, and then said every grade of molded lines is done different biasings, realize the shaping of profile software according to said correction; Then molded lines data after the software shaping are carried out fairing and rounding; Generate new model as processing modelling, machining programming, by new procedures profile is processed and detected again, new procedures processing rear blade profile is still undesirable as if pressing; Continue above-mentioned adjustment; If testing result has satisfied technological requirement, then finish software shaping work, drop into and produce in batches.
It is further characterized in that: during said biasing; When molded lines steam admission side, middle part, steam output side offset direction and amount of bias are consistent; Molded lines integral body is carried out inside or outside biasing, when molded lines steam admission side, middle part, steam output side offset direction or amount of bias are inconsistent, then earlier with the molded lines segmentation; Each section be the amount of bias of the required biasing of envelope respectively, again each segment type linear light slip transition is obtained a complete molded lines.
It further is characterised in that: said during with the molded lines segmentation, leave changeover portion between the adjacent two segment type lines, to guarantee that adjacent two sections inconsistent curves of envelope can natural transition.
A kind of blade profile software shaping methods of the present invention based on UG; Deflection is confirmed in its preprocessing through early stage, and essence is that processing modelling is carried out predeformation, makes the result who mills after the processing not need that machinery is orthopedic can to satisfy technological requirement; Its shaping effect is stable; The material deformation rebound phenomena can not occur after the shaping yet, and can be applied to the shaping of special material blade, and reduce mechanical orthopedic operation; Improve finished product blade profile crudy and working (machining) efficiency, improved the disposable qualification rate of product.
Description of drawings
Fig. 1 is the flow chart of shaping methods of the present invention;
Fig. 2 is in the embodiment of the invention, when molded lines steam admission side, middle part, steam output side offset direction and amount of bias are consistent, and molded lines biasing means sketch map;
Fig. 3 is in the embodiment of the invention, when molded lines steam admission side, middle part, steam output side offset direction or amount of bias are inconsistent, and molded lines biasing means sketch map;
Fig. 4 is in the embodiment of the invention, when molded lines steam admission side, middle part, steam output side skew or amount of bias are inconsistent, to carrying out the fairing and the rounding sketch map of molded lines data after the molded lines biasing;
Fig. 5 is in the embodiment of the invention, carries out the molded lines sketch map after the software event shaping.
The specific embodiment
See Fig. 1, at first blade profile is carried out preprocessing and detect said each gear inner arc of preprocessing rear blade profile, back of the body arc size; Analyze above-mentioned examining report then, list steam admission side, middle part, the steam output side three parts deflection of comparing of every grade of molded lines inner arc, back of the body arc with blade design theory value; According to the deflection of every grade of molded lines, confirm the correction of every grade of molded lines again, and then said every grade of molded lines is done different biasings, realize the shaping of profile software according to said correction; When molded lines steam admission side, middle part, steam output side offset direction and amount of bias are consistent; Molded lines integral body is carried out inside or outside biasing; When molded lines steam admission side, middle part, steam output side offset direction or amount of bias are inconsistent; Then earlier with the molded lines segmentation, each section be the amount of bias of the required biasing of envelope respectively, again each segment type linear light slip transition is obtained a complete molded lines.During with the molded lines segmentation, leave changeover portion between the adjacent two segment type lines, to guarantee that adjacent two sections inconsistent curves of envelope can natural transition.Then molded lines data after the software shaping are carried out fairing and rounding; Generate new model as processing modelling, machining programming, by new procedures profile is processed and detected again, new procedures processing rear blade profile is still undesirable as if pressing; Continue above-mentioned adjustment; If testing result has satisfied technological requirement, then finish software shaping work, drop into and produce in batches.Wherein, the preprocessing of blade can be carried out repeatedly, thereby obtains a plurality of examining reports, confirms molded lines deformation tendency and deflection comparatively accurately according to a plurality of examining reports, thereby has avoided the influence of accidentalia in preprocessing and detection.
Embodiment:
1, the high-volume 1mm processing of blade profile to being processed, and detect;
2, the high-volume 0.5mm processing of blade profile to being processed, and detect;
3, comprehensive above-mentioned twice testing result (seeing table 1) is analyzed deformation tendency, confirms the correction of every grade of molded lines, and molded lines is done following finishing:
A) first grade of molded lines remains unchanged
B) second grade of molded lines, inner arc is put 0.1mm, and back of the body arc is constant
C) third gear molded lines, inner arc is constant, and back of the body arc is put 0.1mm
D) fourth speed molded lines, inner arc is received 0.08mm, and back of the body arc is put 0.1mm
E) the 5th grade of molded lines, inner arc is received 0.1mm, and back of the body arc is put 0.1mm
4, in UG software, every grade of molded lines is carried out the software shaping respectively according to the situation of profile distortion,
A) molded lines offset direction and side-play amount are consistent, such as the fourth speed molded lines, only need the back of the body camber line of this grade is an individual outwards biasing 0.1mm, and back of the body camber line is an outside biasing 0.1mm, sees Fig. 2.
When b) molded lines offset direction or side-play amount are inconsistent, will put 0.1mm such as two steam admission side and the steam output side of the 6th grade of back of the body camber line, 0.2mm is put at the middle part; This will be earlier with the molded lines segmentation; Each section be the needed value of envelope respectively, will note during segmentation staying one section transition region, so that two sections inconsistent curves of envelope can natural transition; Last smooth connection transition region has just obtained a complete molded lines, sees Fig. 3 and Fig. 4.
C) molded lines after the biasing is carried out fairing and advance lagging edge and fall the garden and be linked to be the curve of a sealing, so just can be linked to be blade profile to every grade of molded lines and be used for follow-up processing, with reference to accompanying drawing 5.
5, utilize the moulding after the shaping to generate new blade profile procedure;
6, press new procedures allowance processing blade profile and detection.
7, judge testing result,, adjust again,, just generate the program that profile processing is put in place if satisfy technological requirement by above-mentioned steps if can't satisfy technological requirement.
8, blade profile processing is put in place and detect, accomplish the processing of blade profile.
Claims (2)
1. blade profile software shaping methods based on UG, it is characterized in that: it may further comprise the steps: at first blade profile is carried out preprocessing and detect said each gear inner arc of preprocessing rear blade profile, back of the body arc size; Analyze above-mentioned examining report then, list steam admission side, middle part, the steam output side three parts deflection of comparing of every grade of molded lines inner arc, back of the body arc with blade design theory value; According to the deflection of every grade of molded lines, confirm the correction of every grade of molded lines again, and then said every grade of molded lines is done different biasings, realize the shaping of profile software according to said correction; When molded lines steam admission side, middle part, steam output side offset direction and amount of bias are consistent; Molded lines integral body is carried out inside or outside biasing; When molded lines steam admission side, middle part, steam output side offset direction or amount of bias are inconsistent; Then earlier with the molded lines segmentation, each section be the amount of bias of the required biasing of envelope respectively, again each segment type linear light slip transition is obtained a complete molded lines; Then molded lines data after the software shaping are carried out fairing and rounding; Generate new model as processing modelling, machining programming, by new procedures profile is processed and detected again, new procedures processing rear blade profile is still undesirable as if pressing; Continue above-mentioned adjustment; If testing result has satisfied technological requirement, then finish software shaping work, drop into and produce in batches.
2. a kind of blade profile software shaping methods based on UG according to claim 1 is characterized in that: said during with the molded lines segmentation, leave changeover portion between the adjacent two segment type lines, to guarantee that adjacent two sections inconsistent curves of envelope can natural transition.
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| CN2010105515472A CN102145354B (en) | 2010-11-20 | 2010-11-20 | Unigraphics NX-based blade profile software reshaping method |
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| CN2010105515472A CN102145354B (en) | 2010-11-20 | 2010-11-20 | Unigraphics NX-based blade profile software reshaping method |
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| CN102145354B true CN102145354B (en) | 2012-11-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102500805A (en) * | 2011-11-03 | 2012-06-20 | 哈尔滨汽轮机厂有限责任公司 | Method for correcting rolling wheel molded line |
| CN103591923B (en) * | 2013-11-28 | 2016-08-17 | 哈尔滨电气动力装备有限公司 | Core main pump diffuser crop leaf measuring method |
| CN105619258B (en) * | 2016-01-11 | 2018-07-03 | 无锡透平叶片有限公司 | A kind of bead method for solving the deformation of blade shot-peening |
| CN105927287B (en) * | 2016-04-22 | 2017-11-03 | 北京航空航天大学 | A kind of turbo blade impact opening parametric modeling method |
| CN109623291B (en) * | 2019-01-07 | 2020-11-24 | 无锡透平叶片有限公司 | Numerical control programming method for rough machining of gas inlet and outlet edges of blade |
| CN111023993A (en) * | 2019-12-25 | 2020-04-17 | 贵阳航发精密铸造有限公司 | Method for detecting tenon profile of turbine working blade and special positioning device |
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| GB2041324A (en) * | 1978-12-22 | 1980-09-10 | United Technologies Corp | Winding Wind Turbine Blades Correcting Mandrel Shape |
| GB2307547A (en) * | 1995-11-22 | 1997-05-28 | Europ Gas Turbines Ltd | Detecting manufacturing errors in an article |
| US5764721A (en) * | 1997-01-08 | 1998-06-09 | Southwest Research Institute | Method for obtaining optimized computed tomography images from a body of high length-to-width ratio using computer aided design information for the body |
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Address after: 214174 No. 1800 Huishan Avenue, Huishan Economic Development Zone, Jiangsu Applicant after: Wuxi Turbine Blade Co., Ltd. Address before: 214023 Jiangsu province Wuxi City Qingyang Road No. 305 Applicant before: Wuxi Turbine Blade Co., Ltd. |
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