CN211348000U - Inner hole side wall surface defect collecting device and detecting system - Google Patents
Inner hole side wall surface defect collecting device and detecting system Download PDFInfo
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- CN211348000U CN211348000U CN201921919136.7U CN201921919136U CN211348000U CN 211348000 U CN211348000 U CN 211348000U CN 201921919136 U CN201921919136 U CN 201921919136U CN 211348000 U CN211348000 U CN 211348000U
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Abstract
The utility model discloses a hole lateral wall surface defect collection system and detecting system, wherein the device includes optic fibre endoscope, speculum face and light source module, optic fibre endoscope includes objective, optic fibre bundle, eyepiece and image acquisition module, light source module shines light on hole lateral wall surface on the surface, speculum face reflects the light of hole lateral wall surface reflection to objective to make light pass through optic fibre bundle and eyepiece transmission back, the storage record is on image acquisition module. The utility model combines the optical fiber endoscope with the reflector surface, is used for collecting the image information of the side wall surface of the inner hole with smaller inner hole diameter, and solves the problem that the defect information of the side wall surface of the inner hole can not be collected at present; additionally, the utility model provides a device still has the advantage that easily operation, detection efficiency are high and adjustable space is big, but wide application in surface detection technical field.
Description
Technical Field
The utility model relates to a surface detection technical field especially relates to a hole lateral wall surface defect collection system and detecting system.
Background
The current common surface detection methods mainly comprise: ultrasonic flaw detection, ray flaw detection, magnetic particle flaw detection, eddy current flaw detection, and the like. The methods are difficult to realize the detection function of the inner hole side wall, particularly the inner hole side wall with the hole depth far larger than the hole diameter. The main reason is that the device cannot reach into the hole for detection. However, the conventional visual inspection method requires a camera to photograph the inspected surface, which is very difficult for the inner side wall of the hole.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a hole lateral wall surface defect collection system and detecting system.
The utility model discloses a first technical scheme who adopts is:
the utility model provides an inner hole side wall surface defect collection system, includes optic fibre endoscope, speculum face and light source module, optic fibre endoscope includes objective, fiber bundle, eyepiece and image acquisition module, light source module shines light on the inner hole side wall surface, speculum face reflects the light of inner hole side wall surface reflection to objective to make light pass through fiber bundle and eyepiece transmission back, the storage record is on image acquisition module.
Further, the light source module adopts a diffusion light source.
Further, the light source module comprises a first light source and a second light source, and the first light source and the second light source are symmetrically arranged on the same cross section of the optical fiber endoscope.
Furthermore, the included angle formed by the first light source and the second light source is 120-180 degrees.
Further, the mirror surface is installed right in front of the objective lens.
Furthermore, the included angle between the reflecting mirror surface and the central axis of the optical fiber bundle is 30-60 degrees.
Further, the image acquisition module adopts an industrial camera.
The utility model discloses the second technical scheme who adopts is:
the inner hole side wall surface defect detection system comprises an image information acquisition device and an image processing module, wherein the image information acquisition device is connected with the image processing module, and the image information acquisition device adopts the inner hole side wall surface defect acquisition device.
The utility model has the advantages that: the utility model combines the optical fiber endoscope with the reflector surface, is used for collecting the image information of the side wall surface of the inner hole with smaller inner hole diameter, and solves the problem that the defect information of the side wall surface of the inner hole can not be collected at present; additionally the utility model provides a device still has easily operation, detection efficiency height and the big advantage in adjustable space.
Drawings
FIG. 1 is a schematic structural view of a surface defect collecting device for inner hole side walls according to the present invention;
FIG. 2 is a schematic diagram of the working principle of a fiber optic endoscope;
FIG. 3 is a schematic diagram of a diffuse light source in an embodiment;
FIG. 4 is a schematic illustration of a cross-section of an inner bore in an embodiment;
FIG. 5 is a schematic diagram of the movement of the surface defect collecting device for the inner hole side wall in the embodiment.
Detailed Description
As shown in fig. 1, this embodiment provides a hole lateral wall surface defect collection system, including fiber optic endoscope, speculum face 1 and light source module, fiber optic endoscope includes objective 3, optic fibre bundle 4, eyepiece 5 and image acquisition module 6, light source module shines light on hole lateral wall surface 2, speculum face reflects the light of hole lateral wall surface 2 reflection to objective 3 to make light through optic fibre bundle 4 and eyepiece 5 transmission back, the storage record is on image acquisition module 6.
High quality fiber optic endoscope passThe optical fiber bundle is used for transmitting images, the other optical fiber bundle is used for transmitting a light source, an objective lens, an ocular lens and a control part are added at two ends of the optical fiber bundle, so that the optical fiber endoscope is formed and can be directly observed through the ocular lens, and a metal woven tungsten sleeve is adopted at the outer layer of the endoscope. Referring to fig. 2, the optical fiber transmission of the fiber optic endoscope is realized by total reflection of light. Light ray device
Is incident at an angle on the incident end face of the optical fiber and is refracted to
The angle enters the optical fiber and reaches a smooth interface between the core and the coating, and when the incident light meets the total reflection condition, the total reflection in the optical fiber occurs on the interface. The total reflection light is totally reflected for the second time and the third time … … thousands of times at the opposite interface at the same angle, that is, the light forms a guided wave in the optical fiber until the light is emitted from the other end face (i.e. the emergent end face) of the optical fiber. After being reflected, the light of the object to be detected reaches the human eye 10 through the objective lens, the optical fiber bundle and the eyepiece, and is finally observed by the human eye 10. Because the problem of angle, objective mainly receives the light that the reflection of dead ahead was come, if directly adopt current optic fibre endoscope to detect among the aperture and detect, can only receive the light of pipeline diapire reflection, and can't receive the light of lateral wall reflection.
Based on the above problems, the device proposed in this embodiment includes an optical fiber endoscope, a reflecting mirror surface 1 and a light source module, referring to fig. 1, the optical fiber endoscope can be implemented by using an existing optical fiber endoscope, the reflecting mirror surface 1 can be implemented by using a device capable of reflecting light, the light source module is used for providing light in the detection process, and can be installed in the optical fiber endoscope, if the object to be detected is a pipeline with openings at both ends, the optical fiber endoscope can be inserted into one opening, and the light source module provides light into the opening through the other opening. The working principle of the collecting device of the embodiment is as follows: the optical fiber endoscope and the reflector surface 1 are stretched into the hole, light provided by the light source module is irradiated on the surface of the side wall of the hole and then reflected, and the reflector surface 1 further reflects the light reflected by the surface of the side wall to an objective lens of the optical fiber endoscope, so that the light passes through the optical fiber bundle and the eyepiece to the bottom image acquisition module, and image information on the surface of the side wall of the hole is acquired. Because only need stretch into the hole with speculum face 1, objective and fiber bundle, and these devices can set up very little, consequently to the aperture is little, and the hole depth is far greater than this kind of condition of hole diameter, can gather the image information on hole lateral wall surface well through the device of this embodiment, provide the material for later stage staff carries out hole lateral wall surface defect detection. Through experimental analysis, the utility model discloses can realize that hole diameter is greater than 8 mm's hole lateral wall surface detects, according to the camera difference of arranging, detection precision 0.005mm that can reach. The image acquisition module adopts a CCD industrial camera with 200 ten thousand pixels.
Referring to fig. 5, in order to fully acquire the image information of the surface of the inner hole side wall, the motion mode of the acquisition device can be controlled by the following modes: and controlling the acquisition device to move up and down along the axial direction of the optical fiber and simultaneously rotate clockwise or anticlockwise along the axial direction. Specifically, the rotation motion is performed along the axial direction of the collecting device when the rotation motion is performed clockwise or counterclockwise, and the back-and-forth movement motion is performed along the axial direction of the collecting device when the rotation motion is performed up and down.
Referring to fig. 3, further as a preferred embodiment, the light source module employs a diffuse light source. The characteristic of the diffusion light source is that the light emitted from the light source is in any angle, and the light source can be received at all positions on the surface of the detected object. The light source has good polishing effect on metal surfaces, arc-shaped curved surfaces and the like.
Referring to fig. 4, further as a preferred embodiment, the light source module comprises a first light source 8 and a second light source 9, and the first light source 8 and the second light source 9 are symmetrically installed on the same cross section of the fiber optic endoscope. The included angle formed by the first light source 8 and the second light source 9 is 120-180 degrees.
In the embodiment, a light source module is arranged on the optical fiber endoscope, the light source module comprises a first light source 8 and a second light source 9, and is symmetrically arranged on two sides of the optical fiber bundle; the included angle between the two is adjustable and needs to be determined according to the specific inner hole diameter, so that good polishing effect can be achieved for different aperture ranges. Specifically, the lighting angle of the diffusion light source and the distance from the optical fiber can be designed as required, and when the diameter of the inner hole of the detected workpiece is 14mm and the diameter of the optical fiber is 3mm, the included angle formed by the first light source 8 and the second light source 9 is 120 degrees, so that the included angle between each light source and the image acquisition module is 60 degrees.
Referring to fig. 1, in a further preferred embodiment, the mirror surface 1 is mounted directly in front of an objective lens. The included angle between the reflecting mirror surface 1 and the central axis of the optical fiber bundle is 30-60 degrees.
The selection of the included angle between the reflector surface 1 and the central axis of the optical fiber bundle is determined according to the shape of the inner hole, and if the inner hole is a common cylindrical inner hole, the included angle is 45 degrees; if the inner hole is a taper hole or other conditions, the included angle needs to be adjusted. The ultimate goal of this angle is to add a corner to capture a better image through reflection. Specifically, when the inner hole is a vertical inner hole, the included angle between the reflecting mirror surface 1 and the endoscope optical fiber bundle can be set to be 45 degrees, so that the image information collected from the vertical side wall of the endoscope can be realized.
The embodiment also provides a system for detecting the surface defects of the inner hole side wall, which comprises an image information acquisition device and an image processing module, wherein the image information acquisition device is connected with the image processing module, and the image information acquisition device adopts the surface defect acquisition device of the inner hole side wall.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (8)
1. The utility model provides an inner hole side wall surface defect collection system, its characterized in that includes optic fibre endoscope, speculum face and light source module, optic fibre endoscope includes objective, optic fibre bundle, eyepiece and image acquisition module, light source module shines light on the inner hole side wall surface, speculum face reflects the light of inner hole side wall surface reflection to objective to make light pass through optic fibre bundle and eyepiece transmission back, the storage record is on image acquisition module.
2. The device for collecting surface defects on the side wall of an inner hole as claimed in claim 1, wherein the light source module adopts a diffusion light source.
3. The apparatus of claim 2, wherein the light source module comprises a first light source and a second light source, and the first light source and the second light source are symmetrically installed on the same cross section of the fiber endoscope.
4. The apparatus of claim 3, wherein the first light source and the second light source form an angle of 120 ° to 180 °.
5. The apparatus of claim 1, wherein the mirror is mounted directly in front of the objective lens.
6. The apparatus of claim 5, wherein the reflector surface and the central axis of the fiber bundle form an angle of 30 ° to 60 °.
7. The device for collecting surface defects on the side wall of an inner hole as claimed in claim 1, wherein the image collecting module is an industrial camera.
8. A surface defect detection system for a side wall of an inner hole is characterized by comprising an image information acquisition device and an image processing module, wherein the image information acquisition device is connected with the image processing module, and the image information acquisition device adopts the surface defect acquisition device for the side wall of the inner hole as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919136.7U CN211348000U (en) | 2019-11-07 | 2019-11-07 | Inner hole side wall surface defect collecting device and detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919136.7U CN211348000U (en) | 2019-11-07 | 2019-11-07 | Inner hole side wall surface defect collecting device and detecting system |
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| CN211348000U true CN211348000U (en) | 2020-08-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823920A (en) * | 2019-11-07 | 2020-02-21 | 深圳市智能机器人研究院 | Device, system and method for collecting surface defects of inner hole side wall |
| CN113607753A (en) * | 2021-08-03 | 2021-11-05 | 周勇 | Small hole inner wall defect detection probe |
-
2019
- 2019-11-07 CN CN201921919136.7U patent/CN211348000U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823920A (en) * | 2019-11-07 | 2020-02-21 | 深圳市智能机器人研究院 | Device, system and method for collecting surface defects of inner hole side wall |
| CN113607753A (en) * | 2021-08-03 | 2021-11-05 | 周勇 | Small hole inner wall defect detection probe |
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