CN101113889A - Hydroturbine blade or contraprop non-contact type measurement method - Google Patents
Hydroturbine blade or contraprop non-contact type measurement method Download PDFInfo
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- CN101113889A CN101113889A CNA2007100583734A CN200710058373A CN101113889A CN 101113889 A CN101113889 A CN 101113889A CN A2007100583734 A CNA2007100583734 A CN A2007100583734A CN 200710058373 A CN200710058373 A CN 200710058373A CN 101113889 A CN101113889 A CN 101113889A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a non-contact measurement method of the turbine blade runner or guide vane. The invention belongs to the turbine technology field. The invention includes the position detection of blade runner or guide vane, by adopting the laser tracking method for tracking head to track the target automatically by the tracking head, establish the mathematical model of the workpiece, and mark the detection processing point, technique process: (1) the reference frame of the blade or guide vane is established. The three-dimensional mathematical model is establishes in the mainframe, the reference point of roughcast are detected, and the reference frame is established. (2) the workpiece is measured and the reference frame is adjusted. The detection point is chosen on the roughcast, the detection point is measured and adjusted when the detection points have uniform allowance. (3) the processing volume of the detection point is marked. The roughcast is compared with the theoretical mathematical model by the numbers, the vector allowance of the detection points is given. (4) the detection point is marked circularly. The processing volume of the detection point is processed and marked until the processing is completed. The invention has the advantages of high degree of automation, short period of processing, high accuracy of measurement, wide scope and low labor intensity.
Description
Technical field
The invention belongs to turbine technology field, particularly relate to a kind of turbine runner blade or stator contactless measurement.
Background technology
At present, the molded lines of turbine blade and stator is a three-dimension curved surface, and its surface area is from about 1m * 1m-6m * 6m.The existing machining and testing method methods that adopt artificial relief grinding model to detect: be that vane type line is cut with some equidistant parallel planes, obtain the molded lines on some cross sections, these molded lines are made the envelop-type model be used for detecting and relief grinding, see accompanying drawing 2 more.
With 5m * 5m mixed flow blade is example, comprises vane type line model, portion's model end to end, and total by statistics sample expense is about 5.5 ten thousand yuan, and comprising fee of material and processing charges, testing cost is 140,000 yuan like this.
On the other hand, must consider the process-cycle for delivering goods on schedule.The process-cycle of model is about 2 first quarter moons in the above example, and the workpiece sensing cycle is about 60 hours, considers design and procurement cycle, sense cycle so again: 3 first quarter moons.
The employing template method detects, and the accumulative total accuracy of detection is ± 3 (comprising model mismachining tolerance, measuring error).And adopt the method to require detection worker and relief grinding worker that higher technical merit and rich experience are arranged.
Summary of the invention
The technical matters of the present invention for existing in the solution known technology, and a kind of turbine runner blade or stator contactless measurement are provided.
The purpose of this invention is to provide a kind of automaticity height, the process-cycle is short, the measuring accuracy height, and measurement range is big, can reduce the turbine runner blade or the stator contactless measurement of labor strength.
The present invention takes following technical scheme:
Turbine runner blade or stator contactless measurement, the anchor point that comprises runner bucket or stator detects, be characterized in that non-contact measurement adopts the laser back tracking method, utilize follower head to follow the tracks of target automatically, set up the mathematical model of workpiece, and the marker detection processing stand, comprise following technological process:
(1) sets up blade or stator coordinate system
In main frame, set up the three-dimensional mathematical model of blade or stator, detect the reference point on the blank, make it to overlap, and then on blank, set up coordinate system with respective point on the mathematical model;
(2) measuring workpieces and adjust coordinate system
On blank, get check point, mark; Measurement and adjustment coordinate system are even to check point process redundancy;
(3) processing capacity of marker detection point
Systematic comparison blank and pure mathematics model provide the normal direction process redundancy of each measurement point;
(4) cycle labeling check point
Carry out roughing, semi-finishing, finishing, and marker detection point processing capacity, machine to product.
The present invention can also adopt following technical measures:
Described turbine runner blade or stator contactless measurement preparation method, be characterized in: the automatic tracking target target of follower head device is made up of a follower head and a spherical target, target average rate on workpiece is slided the target that follower head slides from motion tracking.
Described turbine runner blade or stator contactless measurement preparation method are characterized in: when setting up blade or stator coordinate system, three reference point on the detection blank are as benchmark.
Described turbine runner blade or stator contactless measurement preparation method are characterized in: measuring workpieces and when adjusting coordinate system, the density of getting check point on blank is the 60-150/ square meter.
Described turbine runner blade or stator contactless measurement preparation method are characterized in: during the processing capacity of marker detection point, carry out the detection record of check point processing capacity and print.
Advantage that the present invention has and good effect:
Turbine runner blade of the present invention or stator contactless measurement, owing to adopted technical scheme of the present invention, compare with current measuring methods, have the automaticity height, the process-cycle is short, and good portability, the measuring accuracy height, measurement range is big, can reduce labor strength, has improved advantages such as efficiency greatly.Can be widely used in turbine runner blade or stator processing non-contact measurement.
Description of drawings
Fig. 1 is a testing process synoptic diagram of the present invention;
Fig. 2 is the testing process synoptic diagram of prior art.
Embodiment
For further understanding content of the present invention, characteristics and effect, enumerate following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1
With reference to accompanying drawing 1.
Turbine runner blade or stator contactless measurement adopt the laser back tracking method, utilize follower head to follow the tracks of target automatically, set up the mathematical model of workpiece, and the marker detection processing stand; The automatic tracking target target of follower head device is made up of a follower head and a spherical target, and target average rate on workpiece is slided the target that follower head slides from motion tracking.Comprise following technological process:
(1) sets up blade or stator coordinate system
Set up the three-dimensional mathematical model of blade or stator in main frame, three reference point on the detection blank make it to overlap with respective point on the mathematical model, and then set up coordinate system on blanks as benchmark;
(2) measuring workpieces and adjust coordinate system
Get check point on blank, the density of getting check point is 100 of every square meters, marks; Measurement and adjustment coordinate system are even to check point process redundancy;
(3) processing capacity of marker detection point
Systematic comparison blank and pure mathematics model provide the normal direction process redundancy of each measurement point;
(4) cycle labeling check point
Carry out roughing, semi-finishing, finishing, and marker detection point processing capacity, machine to product.During the processing capacity of marker detection point, carry out the detection record of check point processing capacity and print.
Present embodiment is made up of a follower head and a spherical target, and target is at the uniform velocity slided on workpiece, and follower head is followed the trail of target automatically, can set up the mathematical model of workpiece.Also can only detect the coordinate figure of the point of appointment on the workpiece in addition.Testing process such as accompanying drawing 1.
The present invention detects the method for runner bucket or stator, is that it can form quite accurate three-dimensional digital-to-analogue by a large amount of point of continuous coverage, reflects the situation of workpiece truly.Its measurement range is unrestricted in addition, does not need coordinate transform, can be used for the pendulum weldering location and the product inspection of mixed flow runner bucket.
In order to further specify advanced degree of the present invention, be example with same workpiece, to two kinds of detection method comparative analyses:
| Detection method | Detect cost | Sense cycle | Accuracy of detection | Environmental requirement | Portable |
| Template method | 140,000 yuan | 3.5 individual month | 3mm | Very low | Bad |
| Present embodiment | 2.3 ten thousand yuan | 60 hours | 0.07mm | Lower | Better |
As can be seen from the above table, present embodiment has reduced cost and has improved ability again, if combining with digital control mills processing, then can reduce labour intensity greatly, improves machining precision, shortens the process-cycle.
Claims (5)
1. turbine runner blade or stator contactless measurement, the anchor point that comprises runner bucket or stator detects, it is characterized in that non-contact measurement adopts the laser back tracking method, utilize follower head to follow the tracks of target automatically, set up the mathematical model of workpiece, and the marker detection processing stand, comprise following technological process:
(1) sets up blade or stator coordinate system
In main frame, set up the three-dimensional mathematical model of blade or stator, detect the reference point on the blank, make it to overlap, and then on blank, set up coordinate system with respective point on the mathematical model;
(2) measuring workpieces and adjust coordinate system
On blank, get check point, mark; Measurement and adjustment coordinate system are even to check point process redundancy;
(3) processing capacity of marker detection point
Systematic comparison blank and pure mathematics model provide the normal direction process redundancy of each measurement point;
(4) cycle labeling check point
Carry out roughing, semi-finishing, finishing, and marker detection point processing capacity, machine to product.
2. turbine runner blade according to claim 1 or stator contactless measurement preparation method, it is characterized in that: the automatic tracking target target of follower head device is made up of a follower head and a spherical target, target average rate on workpiece is slided the target that follower head slides from motion tracking.
3. turbine runner blade according to claim 1 or stator contactless measurement preparation method is characterized in that: when setting up blade or stator coordinate system, three reference point on the detection blank are as benchmark.
4. turbine runner blade according to claim 1 or stator contactless measurement preparation method is characterized in that: measuring workpieces and when adjusting coordinate system, the density of getting check point on blank is the 60-150/ square meter.
5. turbine runner blade according to claim 1 or stator contactless measurement preparation method is characterized in that: during the processing capacity of marker detection point, carry out the detection record of check point processing capacity and print.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100583734A CN101113889A (en) | 2007-07-24 | 2007-07-24 | Hydroturbine blade or contraprop non-contact type measurement method |
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| CNA2007100583734A CN101113889A (en) | 2007-07-24 | 2007-07-24 | Hydroturbine blade or contraprop non-contact type measurement method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566461B (en) * | 2009-05-18 | 2010-11-10 | 西安交通大学 | Method for quickly measuring blade of large-sized water turbine |
| CN102091814A (en) * | 2010-12-17 | 2011-06-15 | 二重集团（德阳）重型装备股份有限公司 | Method for realizing accurate processing of curved surface by combining laser tracking technology with CAD (computer-aided design)/CAM (computer-aided manufacturing) technology |
| CN102528563A (en) * | 2011-12-15 | 2012-07-04 | 宁夏共享集团有限责任公司 | Machining online measurement method of blades of hydroturbine |
| CN103604394A (en) * | 2013-10-19 | 2014-02-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for processing blade forging member having mounting plate with spatial angle |
| CN103954215A (en) * | 2014-04-25 | 2014-07-30 | 西安航空动力股份有限公司 | Efficient projection enlarged image detection method |
| CN105277155A (en) * | 2015-11-13 | 2016-01-27 | 哈尔滨东安发动机（集团）有限公司 | Complex curved surface duct casting allowance balancing method |
| CN106002491A (en) * | 2016-05-25 | 2016-10-12 | 哈尔滨理工大学 | Thin-wall part machining error measuring device and thin-wall part machining error measurement method based on spatial light modulator |
| CN106052533A (en) * | 2016-08-16 | 2016-10-26 | 福建汇德发电设备有限公司 | Bidirectional verifier for runner blade, and manufacturing method for bidirectional verifier |
| CN106091894A (en) * | 2016-06-30 | 2016-11-09 | 洛阳双瑞精铸钛业有限公司 | A kind of detection method of turbine rotor blade |
| CN106247982A (en) * | 2016-08-26 | 2016-12-21 | 云南能投水电新能源技术工程有限公司 | Water turbine overflowing component entirety Shape measure method |
| CN107243715A (en) * | 2017-06-23 | 2017-10-13 | 成都飞机工业（集团）有限责任公司 | The defect correcting method of one class precision castings blank |
| CN108120373A (en) * | 2017-11-23 | 2018-06-05 | 北京星航机电装备有限公司 | A kind of Complex Different Shape casting measurement inspection method based on laser tracking measurement |
| CN109668534A (en) * | 2017-10-17 | 2019-04-23 | 亚亚科技股份有限公司 | Detect the localization method of open pore steel plate |
| CN111015366A (en) * | 2019-12-18 | 2020-04-17 | 内蒙古第一机械集团股份有限公司 | Laser detection device and method for machining allowance of inner cavity of complex box |
| CN111982012A (en) * | 2020-07-22 | 2020-11-24 | 无锡中车时代智能装备有限公司 | Three-dimensional measurement method, device and system for component surface |
-
2007
- 2007-07-24 CN CNA2007100583734A patent/CN101113889A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101566461B (en) * | 2009-05-18 | 2010-11-10 | 西安交通大学 | Method for quickly measuring blade of large-sized water turbine |
| CN102091814A (en) * | 2010-12-17 | 2011-06-15 | 二重集团（德阳）重型装备股份有限公司 | Method for realizing accurate processing of curved surface by combining laser tracking technology with CAD (computer-aided design)/CAM (computer-aided manufacturing) technology |
| CN102528563A (en) * | 2011-12-15 | 2012-07-04 | 宁夏共享集团有限责任公司 | Machining online measurement method of blades of hydroturbine |
| CN103604394B (en) * | 2013-10-19 | 2017-01-04 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of installing plate is with the blade forging processing method of space angle |
| CN103604394A (en) * | 2013-10-19 | 2014-02-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for processing blade forging member having mounting plate with spatial angle |
| CN103954215A (en) * | 2014-04-25 | 2014-07-30 | 西安航空动力股份有限公司 | Efficient projection enlarged image detection method |
| CN103954215B (en) * | 2014-04-25 | 2017-02-01 | 西安航空动力股份有限公司 | Efficient projection enlarged image detection method |
| CN105277155A (en) * | 2015-11-13 | 2016-01-27 | 哈尔滨东安发动机（集团）有限公司 | Complex curved surface duct casting allowance balancing method |
| CN106002491A (en) * | 2016-05-25 | 2016-10-12 | 哈尔滨理工大学 | Thin-wall part machining error measuring device and thin-wall part machining error measurement method based on spatial light modulator |
| CN106002491B (en) * | 2016-05-25 | 2018-09-25 | 哈尔滨理工大学 | The measurement method of thin-wall part mismachining tolerance measuring device based on spatial light modulator |
| CN106091894A (en) * | 2016-06-30 | 2016-11-09 | 洛阳双瑞精铸钛业有限公司 | A kind of detection method of turbine rotor blade |
| CN106091894B (en) * | 2016-06-30 | 2018-11-16 | 洛阳双瑞精铸钛业有限公司 | A kind of detection method of turbine rotor blade |
| CN106052533A (en) * | 2016-08-16 | 2016-10-26 | 福建汇德发电设备有限公司 | Bidirectional verifier for runner blade, and manufacturing method for bidirectional verifier |
| CN106247982A (en) * | 2016-08-26 | 2016-12-21 | 云南能投水电新能源技术工程有限公司 | Water turbine overflowing component entirety Shape measure method |
| CN107243715A (en) * | 2017-06-23 | 2017-10-13 | 成都飞机工业（集团）有限责任公司 | The defect correcting method of one class precision castings blank |
| CN109668534A (en) * | 2017-10-17 | 2019-04-23 | 亚亚科技股份有限公司 | Detect the localization method of open pore steel plate |
| CN109668534B (en) * | 2017-10-17 | 2021-04-30 | 亚亚科技股份有限公司 | Positioning method for detecting perforated steel plate |
| CN108120373A (en) * | 2017-11-23 | 2018-06-05 | 北京星航机电装备有限公司 | A kind of Complex Different Shape casting measurement inspection method based on laser tracking measurement |
| CN111015366A (en) * | 2019-12-18 | 2020-04-17 | 内蒙古第一机械集团股份有限公司 | Laser detection device and method for machining allowance of inner cavity of complex box |
| CN111982012A (en) * | 2020-07-22 | 2020-11-24 | 无锡中车时代智能装备有限公司 | Three-dimensional measurement method, device and system for component surface |
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