CN112432613A - Centering measuring device - Google Patents
Centering measuring device Download PDFInfo
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- CN112432613A CN112432613A CN202011160827.0A CN202011160827A CN112432613A CN 112432613 A CN112432613 A CN 112432613A CN 202011160827 A CN202011160827 A CN 202011160827A CN 112432613 A CN112432613 A CN 112432613A
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- Prior art keywords
- measuring
- shaft
- hole
- centering
- support cylinder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
Abstract
The invention relates to the technical field of centering measurement, and discloses a centering measurement device which comprises a centering support cylinder, a coarse positioning system and a fine positioning system; the coarse positioning system comprises at least three measuring cameras which are circumferentially distributed and installed on the outer circular surface of the centering support cylinder; the fine positioning system comprises at least one shaft measuring assembly and at least one hole measuring assembly; the shaft measuring assembly comprises at least three shaft measuring laser sensors, the hole measuring assembly comprises at least three hole measuring laser sensors, and the shaft measuring laser sensors and the hole measuring laser sensors are circumferentially distributed and installed on the outer circular surface of the centering support cylinder. The invention solves the problem of low measurement precision in the alignment of the workpiece shaft and the hole in the replacement and installation process of the conventional nuclear power steam generator.
Description
Technical Field
The invention relates to the technical field of centering measurement, in particular to a centering measurement device.
Background
The nuclear power steam generator is one of three major devices in a nuclear island, is the boundary of a primary loop and a secondary loop of a pressurized water reactor nuclear power plant, transfers heat generated by a reactor to the secondary side of the steam generator, and generates steam which is dried by a primary steam-water separator and a secondary steam-water separator and then pushes a steam turbine generator to generate electricity.
In the process of replacing or installing the steam generator, the workpiece shaft and the hole are required to be installed in a matched mode, the requirement for the fit tolerance of the shaft hole of the workpiece is 0.1 mm, and the requirement for centering precision is high. However, the existing nuclear power steam generator lacks a special centering detection device, so that the measurement precision in the alignment of the workpiece shaft and the hole is low in the installation process of the nuclear power steam generator, and the installation precision requirement of the nuclear power steam generator cannot be well met.
Disclosure of Invention
Based on the technical problems, the invention provides a centering measuring device, which solves the problem that the measurement precision in the alignment of a workpiece shaft and a hole is low in the replacement and installation processes of the conventional nuclear power steam generator.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a centering measuring device comprises a centering support cylinder, a coarse positioning system and a fine positioning system; the coarse positioning system comprises at least three measuring cameras which are circumferentially distributed and installed on the outer circular surface of the centering support cylinder; the fine positioning system comprises at least one shaft measuring assembly and at least one hole measuring assembly; the shaft measuring assembly comprises at least three shaft measuring laser sensors, the hole measuring assembly comprises at least three hole measuring laser sensors, and the shaft measuring laser sensors and the hole measuring laser sensors are circumferentially distributed and installed on the outer circular surface of the centering support cylinder.
As a preferred mode, an independent light source is further arranged on the measuring camera.
As a preferred mode, the number of the shaft measuring assemblies is two, and the two sets of shaft measuring assemblies are distributed on the centering support cylinder at intervals.
As a preferred mode, the number of the hole measuring assemblies is two, and the two groups of hole measuring assemblies are distributed on the centering support barrel at intervals.
As a preferable mode, the centering support cylinder is provided with mounting grooves for positioning the mounting shaft measuring laser sensor and the hole measuring laser sensor.
Compared with the prior art, the invention has the beneficial effects that:
the invention realizes the matching detection of the shaft hole of the workpiece by combining the measuring laser sensor and the measuring camera image method. The image detection of the coarse positioning system is used for preliminarily positioning the relative position of the shaft hole of the workpiece, so that the workpiece shaft can smoothly enter the hole of the workpiece, and the measurement laser sensor of the fine positioning system can accurately detect and position the shaft hole of the workpiece in the subsequent positioning and mounting process.
The primary positioning system and the fine positioning system of the centering measuring device are matched to improve the installation precision of the shaft hole of the nuclear power steam generator workpiece.
Drawings
The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a centering measuring device.
Fig. 2 is a schematic structural view of the centering support cylinder.
Fig. 3 is a schematic view of the working state of the centering measuring device.
Fig. 4 is a schematic diagram of the operation of the coarse positioning system.
Wherein, 1 centering support section of thick bamboo, 2 measure the camera, 3 axle measurement laser sensor, 4 hole measurement laser sensor, 5 mounting grooves.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1-2 are schematic structural diagrams of centering measurement devices according to some embodiments of the present application, and the centering measurement devices according to the present application will be described below with reference to fig. 1-2. It should be noted that fig. 1-2 are merely exemplary and are not intended to limit the specific shape and configuration of the centering measurement device.
Referring to fig. 1-2, in the present embodiment, the centering measurement device includes a centering support cylinder 1, a coarse positioning system and a fine positioning system; the rough positioning system comprises at least three measuring cameras 2, and the measuring cameras 2 are circumferentially distributed and installed on the outer circular surface of the centering support cylinder 1; the fine positioning system comprises at least one shaft measuring assembly and at least one hole measuring assembly; the shaft measuring assembly comprises at least three shaft measuring laser sensors 3, the hole measuring assembly comprises at least three hole measuring laser sensors 4, and the shaft measuring laser sensors 3 and the hole measuring laser sensors 4 are circumferentially distributed and installed on the outer circular surface of the centering support cylinder 1.
In this embodiment, referring to fig. 3, during use of the centering measurement device, first, the centering measurement device is placed in the workpiece hole. And then, the matching detection of the shaft hole of the workpiece is realized by combining the image method of the measuring laser sensor and the measuring camera 2. The image detection of the coarse positioning system is used for preliminarily positioning the relative position of the shaft hole of the workpiece, so that the workpiece shaft can smoothly enter the hole of the workpiece, and the measurement laser sensor of the fine positioning system can accurately detect and position the shaft hole of the workpiece in the subsequent positioning and mounting process.
Referring to fig. 4, the general principle of the vision method is to obtain the relative distance between the workpiece shaft holes by calculating the pixel point conversion between the pair of workpiece shaft and the hole inner circle recorded by the measuring camera 2, and since a plurality of measuring cameras 2 are installed on the centering support cylinder 1 in a surrounding distribution manner, when the relative distance between the workpiece shaft holes obtained by each measuring camera 2 is equal (for example, as shown in fig. 4, the shaft hole relative distances d1, d2, d3 and d4 measured by the measuring camera 2 in the figure are equal), it is determined that the workpiece shaft holes are in a centering state. In the positioning and measuring process of the primary positioning system, the measuring cameras 2 can continuously feed the measured shaft hole relative distance data back to the moving system, the moving system drives the workpiece to adjust the position, and finally the relative distances of the workpiece shaft holes obtained by the measuring cameras 2 are equal to finish primary centering. In practical application, the accuracy of centering detection by using the image method of the measuring camera 2 can reach 0.5 mm. Specifically, the measuring camera 2 adopts a germany Basler industrial camera, the selected camera is a digital camera, and the interface is a GigE gigabit network. Preferably, still be equipped with independent light source on the measuring camera 2, independent light source can provide light source for measuring camera 2 in the dim environment of shaft hole installation to guarantee the definition of measuring camera 2 formation of image.
After the centering measuring device enters the hole by using the coarse positioning system, the shaft measuring assembly and the hole measuring assembly of the fine positioning system start to work. The plurality of axis measuring laser sensors 3 arranged on the centering support cylinder 1 in a surrounding manner respectively scan the workpiece axes from different directions to measure the circle centers of the workpiece axes. When the shaft measuring laser sensor 3 scans the workpiece shaft, the laser is in contact with the shaft end surface for reflection, so that the shape of the shaft end surface of the workpiece can be obtained through scanning of the shaft measuring laser sensor 3, and the circle center of the shaft end surface of the workpiece can be calculated. The plurality of hole measuring laser sensors 4 arranged on the centering support cylinder 1 in a surrounding mode respectively scan the workpiece holes from different directions, and due to the fact that laser is in contact with the wall of the workpiece hole and reflects, the hole measuring laser sensors 4 can scan the workpiece holes to obtain the inner circle shape of the workpiece hole, and the circle center of the inner circle of the workpiece hole is calculated. After the center of a circle of the hole shaft of the workpiece is obtained, detection data of the shaft measuring assembly and the hole measuring assembly are continuously fed back to the motion system in the assembling process, so that the motion system drives the workpiece to adjust the position, and the centers of the hole shaft of the workpiece coincide to finish accurate centering. In practical application, the center of the workpiece hole axis is detected by the axis measuring laser sensor 3 and the hole measuring laser sensor 4, and the accuracy of the center can reach 0.04 mm.
Specifically, in order to process and calculate data collected by the measuring camera 2, the axis measuring laser sensor 3, and the hole measuring laser sensor 4, the measuring camera 2, the axis measuring laser sensor 3, and the hole measuring laser sensor 4 may be connected to an upper computer through a cable or a wireless communication manner.
Preferably, the number of the shaft measuring assemblies is two, and the two sets of shaft measuring assemblies are distributed on the centering support barrel 1 at intervals.
Preferably, the number of the hole measuring assemblies is two, and the two hole measuring assemblies are distributed on the centering support barrel 1 at intervals.
In the preferred structure, the shaft measuring component and the hole measuring component can measure to obtain two shaft circle centers and two hole circle centers, the two shaft circle centers are connected to form the shaft axis of the workpiece shaft, the two hole circle centers are connected to form the shaft axis of the workpiece hole, and then the shaft axis of the workpiece shaft and the shaft axis of the workpiece hole are adjusted by the motion system to coincide to realize centering operation, so that the precision is more accurate than the precision in centering.
Specifically, the axis measuring laser sensor 3 and the hole measuring laser sensor 4 of the fine positioning system are measured by a kirschner laser sensor. The sensor models are IL030 and ILS065, and the measuring stroke is 10 mm. The measurement precision of the IL030 is 0.01 mm, the axis measurement laser sensor 3 is used for detecting the axis, the measurement precision of the ILS065 is 0.01 mm, and the hole measurement laser sensor 4 is used for detecting the hole.
In some embodiments, in order to facilitate the positioning and installation of the shaft measuring laser sensor 3 and the hole measuring laser sensor 4, the centering support cylinder 1 is provided with an installation groove 5 for positioning and installing the shaft measuring laser sensor 3 and the hole measuring laser sensor 4.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only used for clearly illustrating the verification process of the invention and are not used for limiting the patent protection scope of the invention, which is defined by the claims, and all the equivalent structural changes made by using the contents of the description and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A centering measurement device, comprising:
a centering support cylinder (1);
the coarse positioning system comprises at least three measuring cameras (2), and the measuring cameras (2) are circumferentially distributed and installed on the outer circular surface of the centering support cylinder (1);
a fine positioning system comprising at least one shaft measurement assembly and at least one bore measurement assembly; the shaft measuring assembly comprises at least three shaft measuring laser sensors (3), the hole measuring assembly comprises at least three hole measuring laser sensors (4), and the shaft measuring laser sensors (3) and the hole measuring laser sensors (4) are circumferentially distributed and installed on the outer circular surface of the centering support cylinder (1).
2. A centering measuring device according to claim 1, characterized in that:
and an independent light source is also arranged on the measuring camera (2).
3. A centering measuring device according to claim 1, characterized in that:
the number of the shaft measuring assemblies is two, and the two groups of shaft measuring assemblies are distributed on the centering support cylinder (1) at intervals.
4. A centering measuring device according to claim 1, characterized in that:
the hole measuring assemblies are two groups in number, and the two groups of hole measuring assemblies are distributed on the centering support cylinder (1) at intervals.
5. A centering measuring device according to claim 1, characterized in that:
and the centering support cylinder (1) is provided with a mounting groove (5) for positioning the mounting shaft measuring laser sensor (3) and the hole measuring laser sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160827.0A CN112432613B (en) | 2020-10-27 | 2020-10-27 | Centering measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011160827.0A CN112432613B (en) | 2020-10-27 | 2020-10-27 | Centering measuring device |
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| CN112432613A true CN112432613A (en) | 2021-03-02 |
| CN112432613B CN112432613B (en) | 2022-06-28 |
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| CN202011160827.0A Active CN112432613B (en) | 2020-10-27 | 2020-10-27 | Centering measuring device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5118013A (en) * | 1989-10-19 | 1992-06-02 | Oki Electric Industry Co., Ltd. | Cylindrical toner cartridge for electrophotographic printer |
| JPH09272025A (en) * | 1996-04-10 | 1997-10-21 | Nippon Steel Corp | Automatic fitting device |
| CN102436670A (en) * | 2010-09-29 | 2012-05-02 | 株式会社日立制作所 | Computer system and method of matching for images and graphs |
| CN104089589A (en) * | 2014-05-23 | 2014-10-08 | 北京航天发射技术研究所 | Large cylindrical structural member centering deviation detection system |
| CN106204610A (en) * | 2016-07-20 | 2016-12-07 | 张家港长安大学汽车工程研究院 | Peg-in-hole assembly automatic centering system based on image procossing |
| CN106568399A (en) * | 2016-11-04 | 2017-04-19 | 北京航空航天大学 | Automatic shaft-hole assembling method based on laser assisted centering |
| US20170295303A1 (en) * | 2016-04-06 | 2017-10-12 | Larry J. Costa | Controlled camera off-axis alignment for the dynamic bore-surface-structure inspecitions via rotational/orbital/rotational orbiting angular off-axis controlled vision camera systems and their corresponding optical positional/angular alignment datum's |
| CN110376598A (en) * | 2019-08-14 | 2019-10-25 | 深圳市镭神智能系统有限公司 | A kind of vision system and laser radar fusing device and emerging system |
-
2020
- 2020-10-27 CN CN202011160827.0A patent/CN112432613B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5118013A (en) * | 1989-10-19 | 1992-06-02 | Oki Electric Industry Co., Ltd. | Cylindrical toner cartridge for electrophotographic printer |
| JPH09272025A (en) * | 1996-04-10 | 1997-10-21 | Nippon Steel Corp | Automatic fitting device |
| CN102436670A (en) * | 2010-09-29 | 2012-05-02 | 株式会社日立制作所 | Computer system and method of matching for images and graphs |
| CN104089589A (en) * | 2014-05-23 | 2014-10-08 | 北京航天发射技术研究所 | Large cylindrical structural member centering deviation detection system |
| US20170295303A1 (en) * | 2016-04-06 | 2017-10-12 | Larry J. Costa | Controlled camera off-axis alignment for the dynamic bore-surface-structure inspecitions via rotational/orbital/rotational orbiting angular off-axis controlled vision camera systems and their corresponding optical positional/angular alignment datum's |
| CN106204610A (en) * | 2016-07-20 | 2016-12-07 | 张家港长安大学汽车工程研究院 | Peg-in-hole assembly automatic centering system based on image procossing |
| CN106568399A (en) * | 2016-11-04 | 2017-04-19 | 北京航空航天大学 | Automatic shaft-hole assembling method based on laser assisted centering |
| CN110376598A (en) * | 2019-08-14 | 2019-10-25 | 深圳市镭神智能系统有限公司 | A kind of vision system and laser radar fusing device and emerging system |
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| CN112432613B (en) | 2022-06-28 |
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