CN102528563A - Machining online measurement method of blades of hydroturbine - Google Patents
Machining online measurement method of blades of hydroturbine Download PDFInfo
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- CN102528563A CN102528563A CN2011104161085A CN201110416108A CN102528563A CN 102528563 A CN102528563 A CN 102528563A CN 2011104161085 A CN2011104161085 A CN 2011104161085A CN 201110416108 A CN201110416108 A CN 201110416108A CN 102528563 A CN102528563 A CN 102528563A
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Abstract
The invention relates to a measurement method, in particular to a machining online measurement method of blades of a hydroturbine. The machining online measurement method is characterized by comprising the following steps of: (a) designing a tooling; and (b) detecting: inspecting 3-5 points on the processed surfaces of the blades by a machine tool after completing local machining, recording a coordinate value of each point, introducing each coordinate value into a 3D (three-dimensional) model to get a detection point and judging the machining allowance of each point by measuring the vertical distance between the detection point and the 3D model, wherein if the machining allowance is a positive value, insufficient machining is indicated, otherwise, excessive machining is indicated. According to the measurement method disclosed by the invention, whether the positions of the blades are changed or not in the machining process can be simply, uniquely and better monitored, the correctness of blade profile after machining can be accurately detected, and the quality can be further effectively controlled.
Description
Technical field
The present invention relates to a kind of measuring method, especially relate to a kind of processing On-line Measuring Method of turbine blade.
Background technology
The sculpture shape space curved surface foundry goods of a kind of complicacy of turbine blade is difficult to carry out real-time control measurement in process, be difficult to guarantee the processing of leaves quality like this.Present general way is through the wall thickness of measuring blade and processes the correctness of preceding allowance to the molded lines of assurance processing recently.This method is owing to the reasons such as error of checkout equipment, and the error of measuring is bigger, can not reflect the mismachining tolerance of vane type line very exactly, can not find whether leaf position change has taken place in the whole machining process process.The process that detects in addition is comparatively loaded down with trivial details, is unfavorable for the raising of production efficiency.Figure below will be explained existing processing and method of quality control.
Blade all can be uniformly distributed with the detection that measurement point is used for the blade blank molded lines at interval, positive and negative 100 ~ 200mm before processing, and can find out the concrete processing allowance value of each point according to the result of software match.General way is to accomplish regional area processing back to use ultrasonic wave that wall thickness measuring is carried out in the blade processing part, and the theoretic throat value at this position adds the allowance of reverse side just can confirm whether this working position is worked into theoretical size.The shortcoming of this method is the concrete allowance that is difficult to confirm the corresponding back side of some points, thereby whether difficult definite working position reaches theoretical size.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of method simple unique, monitor correctness that whether position in the blade processing process processing rear blade molded lines has taken place to change and can detect exactly preferably, the processing On-line Measuring Method of a kind of turbine blade of the purpose that reaches effective control quality.
In order to realize goal of the invention, the present invention realizes in the following way:
A kind of processing On-line Measuring Method of turbine blade is characterized in that: this method comprises the steps:
A. frock design: based on turbine blade concrete molded lines and the concrete range of work and working width and the height of machining tool; In computer, utilize three-dimensional software to be adjusted to required attitude in blade; The frock of design special and be rigidly connected afterwards with blade; Guarantee the system of processing rigidity, the system of processing origin of coordinates is set to the corner of frock, and makes it identical with the procedure initial point;
B. detect: utilize lathe at the surperficial coordinate figure of checking 3 ~ 5 points and writing down each point of processing of leaves after accomplishing partial operation; With obtaining test point in each coordinate figure importing 3D model; This moment, we just can judge the allowance of this point through the vertical range between this test point of measurement and 3D model; If be undressed to amount on the occasion of expression, then expression processing is excessive on the contrary.
Said numerical value of in 3D, measuring and theoretical allowance explain that greater than 3mm the whole work-piece system possibly take place to move, and need again workpiece to be positioned to be installed;
The said reconditioning surplus that leaves man-hour about 0.5mm that adds;
The frock of said special use is to be formed by base plate and the semi-enclosed conformal riser assembly welding on it;
Said conformal riser is similar with the shape of measured blade.
The present invention has following effect:
1) method is unique: this method of method provided by the invention comprises the steps: the design of a. frock: based on turbine blade concrete molded lines and the concrete range of work and working width and the height of machining tool; In computer, utilize three-dimensional software to be adjusted to required attitude in blade; The frock of design special and be rigidly connected afterwards with blade; Guarantee the system of processing rigidity, the system of processing origin of coordinates is set to the corner of frock, and makes it identical with the procedure initial point; B. detect: utilize lathe at the surperficial coordinate figure of checking 3 ~ 5 points and writing down each point of processing of leaves after accomplishing partial operation; To can obtain test point in each coordinate figure importing 3D model; This moment, we just can judge the allowance of this point through the vertical range between this test point of measurement and 3D model; If be undressed to amount on the occasion of expression, then expression processing is excessive on the contrary.
2) monitor preferably whether the position has taken place to change and can detect the correctness of processing the rear blade molded lines exactly in the blade processing process: the present invention is used in the processing of leaves process well; Controlled the accuracy of process well; Show that through the measurement to vane type line after the processing surplus of finished surface meets tolerance fully.
3) can measure molded lines easily in the process, can more accurately guarantee the surplus of finished surface.
4) can the state of being installed of workpiece be detected in the process, whether workpiece squints to some extent in the discovery procedure in time, reduces the processing risk.
5) detection means can reduce in testing process the taking of lathe fast, enhances productivity greatly.
Description of drawings
Fig. 1 is the special-purpose tool structure sketch map of the present invention.
The specific embodiment
A kind of processing On-line Measuring Method of turbine blade is characterized in that: this method comprises the steps:
A. frock design: based on turbine blade concrete molded lines and the concrete range of work and working width and the height of machining tool; In computer, utilize three-dimensional software to be adjusted to required attitude in blade; The frock of design special and be rigidly connected afterwards with blade; Guarantee the system of processing rigidity, the system of processing origin of coordinates is set to the corner of frock, and makes it identical with the procedure initial point;
B. detect: utilize lathe at the surperficial coordinate figure of checking 3 ~ 5 points and writing down each point of processing of leaves after accomplishing partial operation; With obtaining test point in each coordinate figure importing 3D model; This moment, we just can judge the allowance of this point through the vertical range between this test point of measurement and 3D model; If be undressed to amount on the occasion of expression, then expression processing is excessive on the contrary.
Said numerical value of in 3D, measuring and theoretical allowance explain that greater than 3mm the whole work-piece system possibly take place to move, and need again workpiece to be positioned to be installed.
The said reconditioning surplus that leaves man-hour about 0.5mm that adds.
As shown in Figure 1: special-purpose frock is to be formed by base plate 1 and semi-enclosed conformal riser 2 assembly weldings on it, and said conformal riser 2 is similar with the shape of measured blade.
Frock is formed with semi-enclosed riser 2 assembly weldings by the thick base plate 1 of 80mm, and this structure can guarantee the rigidity of frock well.Base plate needs to design again according to the molded lines and the size of different blades with the conformal riser; Frock and blade pass are crossed connecting plate and are welded fixing; Need butt welded seam to carry out NDT after the welding and detect, be connected firmly guaranteeing, thus guarantee to allocate and transport and switching process in safety.
Claims (5)
1. the processing On-line Measuring Method of a turbine blade, it is characterized in that: this method comprises the steps:
A. frock design: based on turbine blade concrete molded lines and the concrete range of work and working width and the height of machining tool; In computer, utilize three-dimensional software to be adjusted to required attitude in blade; The frock of design special and be rigidly connected afterwards with blade; Guarantee the system of processing rigidity, the system of processing origin of coordinates is set to the corner of frock, and makes it identical with the procedure initial point;
B. detect: utilize lathe at the surperficial coordinate figure of checking 3 ~ 5 points and writing down each point of processing of leaves after accomplishing partial operation; With obtaining test point in each coordinate figure importing 3D model; This moment, we just can judge the allowance of this point through the vertical range between this test point of measurement and 3D model; If be undressed to amount on the occasion of expression, then expression processing is excessive on the contrary.
2. the processing On-line Measuring Method of a kind of turbine blade as claimed in claim 1; It is characterized in that: said allowance numerical value of in 3D, measuring and theoretical allowance are greater than 3mm; Explain that the whole work-piece system possibly take place to move, need again workpiece to be positioned to be installed.
3. the processing On-line Measuring Method of a kind of turbine blade as claimed in claim 2 is characterized in that: the said reconditioning surplus that leaves man-hour about 0.5mm that adds.
4. the processing On-line Measuring Method of a kind of turbine blade as claimed in claim 2, it is characterized in that: the frock of said special use is to be formed by base plate (1) and semi-enclosed conformal riser (2) assembly welding on it.
5. the processing On-line Measuring Method of a kind of turbine blade as claimed in claim 4 is characterized in that: said conformal riser (2) is similar with the shape of measured blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104161085A CN102528563A (en) | 2011-12-15 | 2011-12-15 | Machining online measurement method of blades of hydroturbine |
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| CN2011104161085A CN102528563A (en) | 2011-12-15 | 2011-12-15 | Machining online measurement method of blades of hydroturbine |
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| CN102528563A true CN102528563A (en) | 2012-07-04 |
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| CN2011104161085A Pending CN102528563A (en) | 2011-12-15 | 2011-12-15 | Machining online measurement method of blades of hydroturbine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503367A (en) * | 2014-12-11 | 2015-04-08 | 常州奥凡威尔智能技术有限公司 | Turbine blade processing and on-line detection system based on numerical control processing device |
| CN104625876A (en) * | 2015-02-17 | 2015-05-20 | 中国船舶重工集团公司第七一一研究所 | Supercharger impeller blade machining method based on on-machine measuring |
| CN105965218A (en) * | 2016-04-29 | 2016-09-28 | 沈阳透平机械股份有限公司 | Method for testing whether deterioration layer of supercharger impeller being removed or not, and device of method |
| CN110465831A (en) * | 2019-08-08 | 2019-11-19 | 合肥学院 | A kind of processing On-line Measuring Method of turbine blade |
| CN111889764A (en) * | 2020-06-17 | 2020-11-06 | 成都飞机工业（集团）有限责任公司 | Method and device for measuring milling part allowance based on ultrasonic wave |
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| CN1500592A (en) * | 2002-11-12 | 2004-06-02 | ͨ�õ�����˾ | Gage for milled blade ring segments |
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| CN101062526A (en) * | 2006-04-27 | 2007-10-31 | 中国兵器工业集团第七0研究所 | Milling method for turbocharger air compressor blade wheel |
| CN101113889A (en) * | 2007-07-24 | 2008-01-30 | 天津市天发重型水电设备制造有限公司 | Hydroturbine blade or contraprop non-contact type measurement method |
| CN102145465A (en) * | 2011-04-15 | 2011-08-10 | 杭州中水水力发电设备有限公司 | All-purpose clamping tool for blade machining |
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| CN1500592A (en) * | 2002-11-12 | 2004-06-02 | ͨ�õ�����˾ | Gage for milled blade ring segments |
| CN101027616A (en) * | 2004-09-01 | 2007-08-29 | 瑞尼斯豪公司 | Machine tool method |
| CN101062526A (en) * | 2006-04-27 | 2007-10-31 | 中国兵器工业集团第七0研究所 | Milling method for turbocharger air compressor blade wheel |
| CN101113889A (en) * | 2007-07-24 | 2008-01-30 | 天津市天发重型水电设备制造有限公司 | Hydroturbine blade or contraprop non-contact type measurement method |
| CN102145465A (en) * | 2011-04-15 | 2011-08-10 | 杭州中水水力发电设备有限公司 | All-purpose clamping tool for blade machining |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503367A (en) * | 2014-12-11 | 2015-04-08 | 常州奥凡威尔智能技术有限公司 | Turbine blade processing and on-line detection system based on numerical control processing device |
| CN104503367B (en) * | 2014-12-11 | 2017-06-23 | 常州奥凡威尔智能技术有限公司 | A kind of turbo blade processing and on-line detecting system based on numerical control processing apparatus |
| CN104625876A (en) * | 2015-02-17 | 2015-05-20 | 中国船舶重工集团公司第七一一研究所 | Supercharger impeller blade machining method based on on-machine measuring |
| CN105965218A (en) * | 2016-04-29 | 2016-09-28 | 沈阳透平机械股份有限公司 | Method for testing whether deterioration layer of supercharger impeller being removed or not, and device of method |
| CN105965218B (en) * | 2016-04-29 | 2018-06-05 | 沈阳透平机械股份有限公司 | Supercharger impeller metamorphic layer removes the method for inspection and its device |
| CN110465831A (en) * | 2019-08-08 | 2019-11-19 | 合肥学院 | A kind of processing On-line Measuring Method of turbine blade |
| CN111889764A (en) * | 2020-06-17 | 2020-11-06 | 成都飞机工业（集团）有限责任公司 | Method and device for measuring milling part allowance based on ultrasonic wave |
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Application publication date: 20120704 |