CN203857940U - Large-size pipe inner hole cylindricity error measuring device - Google Patents
Large-size pipe inner hole cylindricity error measuring device Download PDFInfo
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- CN203857940U CN203857940U CN201420118527.XU CN201420118527U CN203857940U CN 203857940 U CN203857940 U CN 203857940U CN 201420118527 U CN201420118527 U CN 201420118527U CN 203857940 U CN203857940 U CN 203857940U
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Abstract
The utility model relates to a large-size pipe inner hole cylindricity error measuring device. An upper portion of the measuring device is a vertical lifting mechanism, a lower end of the vertical lifting mechanism is connected with a measuring head mechanism through a lifting shaft, the measuring head mechanism is provided with double measuring heads and a rotating mechanism, the rotating mechanism is connected with an angle encoder, a shaft center of the measuring head mechanism is provided with a laser generator, a lower portion of the measuring device is provided with a light splitter, a lower portion of a vertical bottom face of the light splitter is sequentially provided with a lens and a photoelectric sensor I, and a side end face of the light splitter is provided with a photoelectric sensor II. The measuring device is not only convenient to use, can directly acquire an error value of two positions through detecting position deviation of a collimating laser spot and further carries out error compensation, and thereby relatively high measuring precision is realized.
Description
Technical field
The invention relates to a kind of large sized fittings endoporus deviation from cylindrical form measurement mechanism, belongs to a kind of error measure mechanism.
Background technology
Deviation from cylindrical form refers to the variation of practical columnar contour surface to its desirable periphery, and it has reflected the error condition of cylindrical work comprehensively.The existence of deviation from cylindrical form directly affects quality of fit and the running accuracy of part, causes vibration, produces noise in work, can shorten the serviceable life of part.Therefore, cylindricity becomes an important indicator weighing cylindrical shape precision.
The difference of the more selected coordinate system of deviation from cylindrical form measuring method can be divided into two kinds of radius measurement method and rectangular coordinate mensurations.At present, the axial workpiece less with size mainly concentrated in the research work aspect the measurement of workpiece deviation from cylindrical form both at home and abroad, to the research of oversized hole class parts measurement seldom.Then deviation from cylindrical form pair there is very important meaning with the manufacture and the service precision that guarantee these specific type parts such as gun barrel, guided missile cylinder, large stroke hydraulic oil cylinder.
Due to the type Workpiece length and internal diameter all very large, very large by reduce head mechanism kinematic error cost difficulty too high and that realize with high precision guide rail.In addition, in most deviation from cylindrical form are measured, a plurality of cross section profile data of right cylinder are measured in conventional passing through, then the straightness error of indirect calculation bus replaces the method for guide rail linearity error and do not meet the principle that cylindricity is evaluated.
Summary of the invention
The technical matters that the invention will solve is to provide a kind of large sized fittings endoporus deviation from cylindrical form measurement mechanism, this measurement mechanism is not only easy to use, and its measuring method is based on photoelectric detecting technology, by detecting the skew of collimation laser facula position, directly obtain this two error amounts, and carry out error compensation, thereby reached higher measuring accuracy.
For overcoming the above problems, the concrete technical scheme of the invention is as follows: a kind of large sized fittings endoporus deviation from cylindrical form measurement mechanism, measurement mechanism top is vertical lifting mechanism, the lower end of vertical lifting mechanism connects head mechanism by lifting shaft, on head mechanism, be provided with double testing head and rotational structure, on rotating mechanism, be connected with angular encoder; Axle center at head mechanism is provided with laser generator, is provided with spectroscope below measurement mechanism, and spectroscopical vertical bottom face below is provided with successively lens and is provided with photoelectric sensor I, and spectroscopical side end face is provided with photoelectric sensor II.
This large sized fittings endoporus deviation from cylindrical form measurement mechanism and measuring method have adopted Multi-sensor Fusion and error separating technology, by two photoelectric sensors, measure laser spot position skew and obtain the translation of head mechanism center and mechanism's droop error, the contour point data on this basis gauge head being recorded is revised, thereby complete large sized fittings endoporus deviation from cylindrical form and measure task, and reached higher measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of large sized fittings endoporus deviation from cylindrical form measurement mechanism.
Embodiment
As shown in Figure 1, a kind of large sized fittings endoporus deviation from cylindrical form measurement mechanism, measurement mechanism top is vertical lifting mechanism 1, the lower end of vertical lifting mechanism 1 connects head mechanism 3 by lifting shaft 2, on head mechanism, be provided with double testing head and rotational structure, on rotating mechanism, be connected with angular encoder; Axle center at head mechanism 3 is provided with laser generator, is provided with spectroscope 5 below measurement mechanism, and the vertical bottom face below of spectroscope 5 is provided with successively lens 6 and is provided with photoelectric sensor I 7, and the side end face of spectroscope 5 is provided with photoelectric sensor II 8.
Utilize the measuring method of above-mentioned measurement mechanism to large sized fittings endoporus deviation from cylindrical form, comprise the following steps:
1) large sized fittings to be measured is placed in to the below of vertical lifting mechanism 1, lifting shaft 2 is extend in pipe fitting, and in axis direction;
2) open head mechanism 3 and laser generator 4, and control head mechanism 3 continuous rotations when lifting shaft is continuous to decline, the double testing head on head mechanism 3 is measured pipe fitting internal bore profile data; Angular encoder is measured the position of double testing head in real time;
3) be arranged on the laser instrument generation collimated light beam at head mechanism center, after spectroscope 5, project respectively in orthogonal photoelectric sensor I 7 and photoelectric sensor II 8;
4) according to the facula position in photoelectric sensor I 7 and photoelectric sensor II 8, separable translation and the tilt quantity that goes out the double testing head that guide rail linearity error and kinematic error cause, and then the internal bore profile data that double testing head is recorded are revised;
5), by revised outline data is evaluated, can obtain the deviation from cylindrical form value of pipe fitting endoporus.
Its concrete course of work is: workpiece is vertically arranged on surveying work platform, and while can elimination of level placing, the suspension deflection because deadweight causes, also facilitates the feeding of head mechanism simultaneously.Motion drives lifting shaft to measure sectional position by move up and down each to determining deviation, head mechanism rotation, and double testing head is measured pipe fitting internal bore profile data.The angular encoder of installing in head mechanism, can provide the position of double testing head in real time.Meanwhile, the laser generator that is arranged on Ce Tou mechanism center sends collimated light beam, has an X-rayed respectively on orthogonal two photoelectric sensors after spectroscope.According to these two facula positions that photoelectric sensor records, head mechanism translation and tilt quantity that separable protection track straightness error and kinematic error cause, and then the internal bore profile data that bilateral head is recorded are revised.By revised outline data is evaluated, can obtain the deviation from cylindrical form value of pipe fitting endoporus.
Claims (1)
1. a large sized fittings endoporus deviation from cylindrical form measurement mechanism, it is characterized in that: measurement mechanism top is vertical lifting mechanism (1), the lower end of vertical lifting mechanism (1) connects head mechanism (3) by lifting shaft (2), on head mechanism, be provided with double testing head and rotational structure, on rotating mechanism, be connected with angular encoder; Axle center at head mechanism (3) is provided with laser generator, below measurement mechanism, be provided with spectroscope (5), the vertical bottom face below of spectroscope (5) is provided with successively lens (6) and is provided with photoelectric sensor I (7), and the side end face of spectroscope (5) is provided with photoelectric sensor II (8).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201420118527.XU CN203857940U (en) | 2014-03-17 | 2014-03-17 | Large-size pipe inner hole cylindricity error measuring device |
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CN201420118527.XU CN203857940U (en) | 2014-03-17 | 2014-03-17 | Large-size pipe inner hole cylindricity error measuring device |
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CN201420118527.XU Withdrawn - After Issue CN203857940U (en) | 2014-03-17 | 2014-03-17 | Large-size pipe inner hole cylindricity error measuring device |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103822593A (en) * | 2014-03-17 | 2014-05-28 | 沈阳飞机工业(集团)有限公司 | Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting |
CN106403848A (en) * | 2016-09-02 | 2017-02-15 | 邵阳学院 | Single-point laser rotation scanning-based deep hole straightness detection device and detection method |
CN109186431A (en) * | 2018-08-30 | 2019-01-11 | 太原理工大学 | A kind of screw automatic fastening electromechanics screwdriver bit jerk value precision measurement apparatus and method |
CN110160462A (en) * | 2019-05-08 | 2019-08-23 | 北京理工大学 | A kind of detection method of large size deep-hole parts Boring Process circularity and straightness |
-
2014
- 2014-03-17 CN CN201420118527.XU patent/CN203857940U/en not_active Withdrawn - After Issue
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103822593A (en) * | 2014-03-17 | 2014-05-28 | 沈阳飞机工业(集团)有限公司 | Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting |
CN103822593B (en) * | 2014-03-17 | 2017-03-22 | 沈阳飞机工业(集团)有限公司 | Device and method for measuring deviation from cylindrical form of inner hole of large-size pipe fitting |
CN106403848A (en) * | 2016-09-02 | 2017-02-15 | 邵阳学院 | Single-point laser rotation scanning-based deep hole straightness detection device and detection method |
CN109186431A (en) * | 2018-08-30 | 2019-01-11 | 太原理工大学 | A kind of screw automatic fastening electromechanics screwdriver bit jerk value precision measurement apparatus and method |
CN109186431B (en) * | 2018-08-30 | 2020-08-18 | 太原理工大学 | Precision measurement device and method for jump quantity of screw automatic fastening machine screwdriver head |
CN110160462A (en) * | 2019-05-08 | 2019-08-23 | 北京理工大学 | A kind of detection method of large size deep-hole parts Boring Process circularity and straightness |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
AV01 | Patent right actively abandoned |
Granted publication date: 20141001 Effective date of abandoning: 20170322 |
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C25 | Abandonment of patent right or utility model to avoid double patenting |