CN103822593B - Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting - Google Patents
Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting Download PDFInfo
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- CN103822593B CN103822593B CN201410096698.1A CN201410096698A CN103822593B CN 103822593 B CN103822593 B CN 103822593B CN 201410096698 A CN201410096698 A CN 201410096698A CN 103822593 B CN103822593 B CN 103822593B
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Abstract
The invention relates to a device for measuring deviation from cylindrical form of an inner hole of a large-size pipe fitting. A vertical lifting mechanism is arranged at the upper part of the measurement device; the lower end of the vertical lifting mechanism is connected with a measuring head mechanism through a lifting shaft; dual measuring heads and a rotating structure are arranged on the measuring head mechanism; an angle encoder is connected to a rotating mechanism; a laser generator is arranged in the axis of the measuring head mechanism; a beam splitter is arranged below the measurement device; a lens and a photoelectric sensor I are sequentially arranged below the vertical bottom surface of the beam splitter; and a photoelectric sensor II is arranged on a side end face of the beam splitter. The measurement device is convenient to use, the measurement method is based on a photoelectric detection technology, the two error values are directly obtained by detecting the position offset of aligning laser spots, and error compensation is performed, and thus high measurement accuracy is achieved.
Description
Technical field
The invention is related to a kind of large sized fittingses endoporus deviation from cylindrical form measurement apparatus and its measuring method, belongs to one
Plant error measure mechanism.
Background technology
Deviation from cylindrical form refers to variation of the practical columnar contour surface to its preferable periphery, and it reflects comprehensively
The error condition of cylindrical work.The presence of deviation from cylindrical form directly affects the quality of fit of part and running accuracy, in work
Cause vibration, produce noise, the service life of part can be shortened.Therefore, cylindricity becomes of measurement cylindrical shape precision
Important indicator.
The difference of the more selected coordinate system of deviation from cylindrical form measuring method can be divided into radius measurement method and rectangular co-ordinate measurement
Two kinds of method.At present, the research work both at home and abroad in terms of workpiece deviation from cylindrical form measurement is mainly concentrated and the less axle class of size
Part, the research to oversized hole class parts measurement are little.Then deviation from cylindrical form pair with ensure gun barrel, guided missile cylinder,
The manufacture of these specific type parts such as big stroke hydraulic oil cylinder and service precision have particularly important meaning.
As the type Workpiece length and internal diameter are all very big, reduce head mechanism motion by using high accuracy guide rail and miss
Difference cost it is too high and realize difficulty it is very big.In addition, most deviation from cylindrical form measurement in commonly use by measure cylinder
The multiple cross section profile data of body, then the straightness error of bus is calculated indirectly replacing the method for guide rail linearity error and not be inconsistent
Close the principle of cylindricity evaluation.
The content of the invention
The invention technical problem to be solved is to provide a kind of large sized fittingses endoporus deviation from cylindrical form measurement apparatus
And its measuring method, the measurement apparatus are not only easy to use, and its measuring method is based on photoelectric detecting technology, accurate by detecting
Straight laser spot position skew directly obtains this two error amounts, and carries out error compensation, so as to reach higher measurement essence
Degree.
For solving problem above, the concrete technical scheme of the invention is as follows：A kind of large sized fittingses endoporus cylindricity
Error measuring means, measurement apparatus top are vertical lifting mechanism, and the lower end of vertical lifting mechanism connects gauge head by lifting shaft
Mechanism, is provided with double testing head and rotational structure on head mechanism, is connected with angular encoder on rotating mechanism；In head mechanism
Axle center is provided with laser generator, is provided with spectroscope, is sequentially provided with below spectroscopical vertical bottom face below measurement apparatus
Mirror is provided with photoelectric sensor I, and spectroscopical side end face is provided with photoelectric sensor II.
Using measuring method of the above-mentioned measurement apparatus to large sized fittingses endoporus deviation from cylindrical form, comprise the following steps：
1）Large sized fittingses to be measured are placed in into the lower section of vertical lifting mechanism, lifting shaft is extend in pipe fitting, and located
In axis direction；
2）Head mechanism and laser generator is opened, and controls head mechanism while lifting shaft constantly declines and continuously revolved
Turn, the double testing head measurement pipe fitting internal bore profile data on head mechanism；Angular encoder measures the position of double testing head in real time；
3）There is collimated light beam in the laser instrument installed in head mechanism center, project respectively be mutually perpendicular to Jing after spectroscope
Photoelectric sensor I and photoelectric sensor II on；
4）According to the facula position on photoelectric sensor I and photoelectric sensor II, may separate out guide rail linearity error and
The translation of the double testing head that kinematic error causes and tilt quantity, and then the internal bore profile data measured to double testing head are modified；
5）By evaluating to revised outline data, the deviation from cylindrical form value of pipe fitting endoporus is obtained.
The large sized fittingses endoporus deviation from cylindrical form measurement apparatus and measuring method employ Multi-sensor Fusion and error
Isolation technics, measures laser spot position skew by two photoelectric sensors and obtains head mechanism center translation and mechanism tilts
Error, is modified to the contour point data that gauge head is measured on this basis, so as to complete large sized fittingses endoporus cylindricity mistake
Difference measurements task, and reached higher certainty of measurement.
Description of the drawings
Structural representations of the Fig. 1 for large sized fittingses endoporus deviation from cylindrical form measurement apparatus.
Specific embodiment
As shown in figure 1, a kind of large sized fittingses endoporus deviation from cylindrical form measurement apparatus, measurement apparatus top is vertical lifting
Mechanism 1, the lower end of vertical lifting mechanism 1 connect head mechanism 3 by lifting shaft 2, are provided with double testing head and rotation on head mechanism
Rotation structure, is connected with angular encoder on rotating mechanism；Laser generator is provided with the axle center of head mechanism 3, in measurement apparatus
Lower section be provided with spectroscope 5, be sequentially provided with lens 5 below the vertical bottom face of spectroscope 5 and be provided with photoelectric sensor I 7, spectroscope 5
Side end face be provided with photoelectric sensor II 8.
Using measuring method of the above-mentioned measurement apparatus to large sized fittingses endoporus deviation from cylindrical form, comprise the following steps：
1）Large sized fittingses to be measured are placed in into the lower section of vertical lifting mechanism 1, lifting shaft 2 is extend in pipe fitting, and
In axis direction；
2）Head mechanism 3 and laser generator 4 is opened, and it is continuous to control head mechanism 3 while lifting shaft constantly declines
Rotation, the double testing head measurement pipe fitting internal bore profile data on head mechanism 3；Angular encoder measures the position of double testing head in real time；
3）There is collimated light beam in the laser instrument installed in head mechanism center, project respectively mutually hang down Jing after spectroscope 5
On straight photoelectric sensor I 7 and photoelectric sensor II 8；
4）According to the facula position on photoelectric sensor I 7 and photoelectric sensor II 8, guide rail linearity error is may separate out
The translation of the double testing head caused with kinematic error and tilt quantity, and then the internal bore profile data measured to double testing head are modified；
5）By evaluating to revised outline data, the deviation from cylindrical form value of pipe fitting endoporus is obtained.
Its specific course of work is：Workplace vertical be arranged on measurement workbench on, can elimination of level place when, due to from
The suspension deflection for causing again, while be also convenient for the feeding of head mechanism.Motion drives lifting shaft by moving down in given spacing
Move each measurement sectional position, head mechanism rotation, double testing head measurement pipe fitting internal bore profile data.The angle installed in head mechanism
Degree encoder, can provide the position of double testing head in real time.Meanwhile, the laser generator installed in Ce Tou mechanisms center sends collimated light
Beam, is had an X-rayed on orthogonal two photoelectric sensors respectively Jing after spectroscope.Measured according to the two photoelectric sensors
Facula position, head mechanism translation and tilt quantity that separable protection rail linearity degree error and kinematic error cause, so that it is right
The internal bore profile data that bilateral head is measured are modified.By evaluating to revised outline data, it is obtained in pipe fitting
The deviation from cylindrical form value in hole.
Claims (2)
1. a kind of large sized fittingses endoporus deviation from cylindrical form measurement apparatus, it is characterised in that：Measurement apparatus top is vertical lifting
Mechanism（1）, vertical lifting mechanism（1）Lower end pass through lifting shaft（2）Connection head mechanism（3）, it is provided with double on head mechanism
Gauge head and rotational structure, are connected with angular encoder on rotating mechanism；In head mechanism（3）Axle center be provided with laser generator,
Spectroscope is provided with below measurement apparatus（5）, spectroscope（5）Vertical bottom face below be sequentially provided with lens（6）It is provided with photoelectricity
Sensor I（7）, spectroscope（5）Side end face be provided with photoelectric sensor II（8）.
2. measuring method of the measurement apparatus described in claim 1 to large sized fittingses endoporus deviation from cylindrical form, its feature are utilized
It is to comprise the following steps：
1）Large sized fittingses to be measured are placed in into vertical lifting mechanism（1）Lower section, by lifting shaft（2）It extend in pipe fitting, and
In axis direction；
2）Open head mechanism（3）And laser generator（4）, and control head mechanism while lifting shaft constantly declines（3）Even
Continuous rotation, head mechanism（3）On double testing head measurement pipe fitting internal bore profile data；Angular encoder measures the position of double testing head in real time
Put；
3）There is collimated light beam, Jing spectroscopes in the laser instrument installed in head mechanism center（5）Project respectively afterwards and be mutually perpendicular to
Photoelectric sensor I（7）With photoelectric sensor II（8）On；
4）According to photoelectric sensor I（7）With photoelectric sensor II（8）On facula position, isolate guide rail linearity error and
The translation of the double testing head that kinematic error causes and tilt quantity, and then the internal bore profile data measured to double testing head are modified；
5）By evaluating to revised outline data, the deviation from cylindrical form value of pipe fitting endoporus is obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096698.1A CN103822593B (en) | 2014-03-17 | 2014-03-17 | Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410096698.1A CN103822593B (en) | 2014-03-17 | 2014-03-17 | Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting |
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| CN103822593A CN103822593A (en) | 2014-05-28 |
| CN103822593B true CN103822593B (en) | 2017-03-22 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202014011033U1 (en) * | 2014-12-16 | 2017-06-23 | Jenoptik Industrial Metrology Germany Gmbh | measurement device |
| CN106403863B (en) * | 2016-11-04 | 2019-11-01 | 徐工集团工程机械有限公司 | Hole system multi-parameter detection system and method |
| CN106840025B (en) * | 2016-11-25 | 2019-02-15 | 上海速介机器人科技有限公司 | Roundness measuring equipment in tubular part |
| CN107063091A (en) * | 2017-04-11 | 2017-08-18 | 合肥工业大学 | For big L/D ratio pipe fitting endoporus measuring multiple parameters device and method |
| CN107084685B (en) * | 2017-06-30 | 2020-03-24 | 徐工集团工程机械有限公司 | Inner hole cylindricity detection device and detection method thereof |
| CN109696138B (en) * | 2019-03-01 | 2024-04-09 | 中国计量大学 | Cylindricity detection device and eccentric calibration method thereof |
| CN113884023B (en) * | 2021-10-13 | 2022-05-10 | 哈尔滨工业大学 | High-precision detection device for inner wall of WolterI type X-ray focusing lens |
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| CN102042811B (en) * | 2010-11-25 | 2012-11-28 | 天津大学 | High-precision multi-parameter automatic inner diameter measurement mechanism and method |
| CN102927922B (en) * | 2012-10-12 | 2014-11-19 | 中北大学 | System for measuring inner diameter of tubular workpiece |
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| CN101424512A (en) * | 2008-12-18 | 2009-05-06 | 浙江大学 | Method for detecting radial motion error of high speed principal axis by multi-ring coincidence three-point method |
| JP2014505868A (en) * | 2010-12-30 | 2014-03-06 | アクサン・テクノロジーズ・インコーポレーテッド | Integrated optical coherence tomography system |
| CN102937418A (en) * | 2012-10-18 | 2013-02-20 | 北京航空航天大学 | Scanning type object surface three-dimensional shape measurement method and device |
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