CN211783345U - Curvature detection device - Google Patents
Curvature detection device Download PDFInfo
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- CN211783345U CN211783345U CN202020323260.3U CN202020323260U CN211783345U CN 211783345 U CN211783345 U CN 211783345U CN 202020323260 U CN202020323260 U CN 202020323260U CN 211783345 U CN211783345 U CN 211783345U
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Abstract
The utility model discloses a curvature detection device, belonging to the field of detected piece detection, comprising an optical ray emission device, a measuring frame for placing a detected piece and a reflective sticker attached to the outer wall of the detected piece; the top of the measuring frame is provided with an opening, the optical ray emitting device is arranged below the measuring frame, and the light-reflecting sticker and the optical ray emitting device are on the same vertical line. The utility model aims to provide a: the defects in the prior art are overcome, and the curvature detection device is provided, through the design of the reflective sticker and the optical ray emission device, light emitted by the optical ray emission device is reflected on the surface of the reflective sticker, the curvature of the end face of the piece to be detected is detected from the deviation angle of the reflected light, whether the end face of the piece to be detected is bent or not can be detected, and the detection accuracy is improved.
Description
Technical Field
The utility model relates to a crookedness detection device belongs to a detected detection area.
Background
The end face detection of the detected piece is mainly used for detecting whether the detected piece has defects of rusting, scratching, knife mark, rough surface and the like. The existing detection device for the detected piece has a complex structure and is inconvenient to use. Although new detection device has appeared now, a punching press is surveyed a terminal surface and is detected workstation as publication (CN201820765643.9) disclose, the utility model discloses a setting up the detection device who installs in the punching machine side, when needs are surveyed a piece, only need pull it down earlier, then wash the piece of being surveyed through the brush on the detection device, at last through the mirror in the detection device outside observe the terminal surface of being surveyed a piece can. Compare with traditional punching press surveyed a terminal surface detection device, the utility model discloses, convenient to use, detection efficiency height and detection effect are good. The fixing groove is turned over firstly, then the height of the fixing groove is adjusted through the sliding groove, then the connecting piece is fixed with the punching machine body through the fixing bolt, and the measured end face of the upper end of the punching machine body is observed through the mirror on the mounting plate. The mirror in the above scheme is used for observing whether the end face of the detected piece of the punching machine has the defects of rusting, scratching, tool marks, rough surface and the like, and although the convenience of detecting the detected piece is improved, the detection of the side slope of the detected piece is not involved.
The deformation which is difficult to be sensed by accurate measurement in daily life is: for example, an object is supported and placed by fewer supporting points for a long time, and is slightly deformed under the influence of gravity. Such as slight warp deformation of an object caused by heating one side of the object. Such as a slight bending of a piece of material that is subjected to a nominal load. Therefore, a detection device capable of detecting the end face inclination of the detected piece needs to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the defects in the prior art are overcome, and the curvature detection device is provided, through the design of the reflective sticker and the optical ray emission device, light emitted by the optical ray emission device is reflected on the surface of the reflective sticker, the inclination of the end face of the piece to be detected is detected from the deviation angle of the reflected light, whether the end face of the piece to be detected is inclined or not can be detected, and the detection accuracy is improved.
In order to realize the above purpose, the utility model discloses a technical scheme:
a curvature detection device comprises an optical ray emission device, a measuring frame for placing a measured piece and a reflective sticker attached to the outer wall of the measured piece;
the top of the measuring frame is provided with an opening, the optical ray emitting device is arranged below the measuring frame, and the light-reflecting sticker and the optical ray emitting device are on the same vertical line.
The working principle is as follows: firstly, the reflecting piece is attached to the position to be measured of the measured piece, the optical ray emitting device is aligned to the position of the luminous piece of the measured piece, the reflecting piece can be arranged at any position of the end face of the measured piece, which needs to detect the inclination, then one side of the measured piece, which is provided with the reflecting piece, is downwards arranged above the measuring frame, and the reflecting piece and the optical ray emitting device are on the same vertical line. The optical ray emitting device is opened, light beams emitted by the optical ray emitting device vertically irradiate the surface of the light reflecting sticker, the top of the measuring frame is provided with an opening instead of transparent glass, and the arrangement of the transparent glass can cause the refraction of light to influence the measuring accuracy. If the side surface of the bottom end of the measured piece is inclined, the reflecting piece is also inclined. When the light beam irradiates the horizontal reflecting sticker, the light beam reflected on the surface of the reflecting sticker returns to the optical ray emitting device along the original path, and the reflected light and the incident light are parallel, so that when the reflected light keeps a vertical state, the measured position of the measured piece is a plane; when the light beam irradiates the inclined end face, the light beam reflected on the surface of the light reflecting piece is deflected and reflected at a certain angle, so that when the reflected light is deflected, the measured end is inclined, and the end face of the measured piece is an inclined plane. The inclination degree of the end face is calculated according to the light reflection principle by measuring the distance from the ground to the optical ray emitting device and the vertical distance from the optical ray emitting device to the light reflection sticker. The light beam emitted by the optical ray emitting device is a parallel light beam.
The measured part is deformed when being influenced by the outside or changing by the measured part, so that the receiving position of the original reflected light is changed, the farther the distance between the position of the received light and the vertical direction of the measured part is, the higher the amplification factor is, the more obvious the change is, under the condition that the precision of the measuring tool is not changed, the measured precision is amplified in a multiplying mode while the distance is amplified, and the deflection position of the measured light is measured to calculate the deflection angle of the corresponding position of the measured object, so that the high-precision detection result is obtained. When the light is thinner, the minimum radius of the bonding contact area of the light reflecting sticker and the measured piece is equal to the minimum radius of the limit of the measured surface, the measurement data is that the distance value between the optical ray emitting device and the reflected light is the distance from the light source of the optical ray emitting device to the reflected light, and the vertical distance between the bottom surface of the optical ray emitting device and the light reflecting sticker. The uniform deformation under uniform load can be referred to the deflection calculation method.
The specific use method comprises the following steps:
1. laying a flat plate and an extension plate, placing a measuring frame above the flat plate, placing supporting parts at two ends of a supporting plate in the annular groove, moving the supporting plate, and conveniently placing a plurality of supporting points of a measured piece above the measuring frame;
2. adhering the light reflecting sticker to the part to be tested on the bottom surface of the tested piece, and placing the tested piece above the measuring frame;
3. placing an optical ray emitting device below the tested piece, wherein the optical ray emitting device and the light-reflecting sticker are on the same vertical line;
4. turning on the optical ray emitting device, vertically emitting light rays, reflecting the light rays to the light-emitting part, and reflecting the reflected light rays to the flat plate or the extension plate;
5. the vertical distance between the reflecting sticker and the optical ray emitting device is measured, the distance between the optical ray emitting device and the reflecting light on the flat plate or the extension plate is measured, the included angle between the reflecting light and the incident light is calculated through a trigonometric function, and the inclination angle of the measured piece at the reflecting sticker is half of the included angle between the reflecting light and the incident light.
Furthermore, the inner wall of the top of the measuring frame is provided with an annular groove, and a supporting plate is placed in the annular groove. The detection device is suitable for the detected workpiece with few supporting points, for example, a heating device (electric heating and the like) is arranged on the back surface of the detected workpiece, a fixed load instrument (hydraulic pressure, air pressure head and the like) is arranged on the back surface of the detected workpiece, the detected workpiece receives a certain natural load (a fan is arranged on the back surface to form wind pressure, water flow is arranged to form water flow impact) and the like, and the supporting mode of the detected workpiece can also be central supporting to observe the deformation parameters of reverse bending. Therefore, because the deformation degree of the measured piece is inconsistent, so the size of the measured piece is not consistent with the size of the top of the detection device, the supporting plate moves in the annular groove, the adjusting position is matched with the size of the measured piece, the bottom supporting point of the measured piece is placed on the top of the measuring frame, the height of the measured piece is kept consistent, and the measuring accuracy is guaranteed.
Further, the backup pad is the strip, and the backup pad includes the portion of sliding and supporting part, the portion of sliding is two sets of both ends of locating the supporting part, and the portion of sliding slides at the opposition side of annular groove. When a plurality of supporting points of the tested piece are arranged at the vertex angle of the tested piece and the tested piece is in a shape of bending downwards in the center, the fixed end of the bottom of the tested piece is placed at one vertex of the test frame to be relatively fixed, and meanwhile, the supporting part is moved to enable the sliding part to slide in the annular groove, so that the moving ends of the bottom of the tested piece are all arranged on the measuring frame or the supporting part and are kept horizontal, and the subsequent measurement is facilitated; when the support mode of the measured piece is central support, the support point is in the center, and the top of the measuring frame is provided with the opening, so that the support plate is moved to the position in the center of the opening by moving the support part, and the central support point at the bottom of the measured piece can be placed on the support part, thereby facilitating the subsequent measurement of the end face inclination.
Further, the top end of the supporting plate and the top end of the measuring frame are in the same horizontal plane. The above design makes the supporting point of the measured piece placed above the supporting point be in the same plane, and then the measured piece is kept horizontal.
Further, the inner wall of the annular groove is also provided with a rubber layer. The design of rubber layer prevents the arbitrary slip of backup pad in the annular groove, and only under the circumstances of a little application of force, the backup pad just can slide, and then improves the stability of the strong point of quilt survey piece on measuring the frame.
Furthermore, the bottom of the measuring frame is also provided with a flat plate.
Furthermore, the side edges of the flat plate are connected with extension plates, the side edges of the flat plate are provided with grooves, and the extension plates are provided with lugs matched with the grooves. When the end face of the measured piece is inclined, according to the light reflection principle, the included angle between the incident light and the reflected light is twice the inclined angle, so that the reflected light is far away from the vertical incident light, and the reflected light is possibly irradiated on the outer side of the flat plate, so that the extension plate is arranged on the outer side of the flat plate, and the reflected light is irradiated on the extension plate. By measuring the distance from the reflected light beam to the optical ray emitting device and the distance from the optical ray emitting device to the light reflecting adhesive piece, the reflected light angle can be measured and calculated, and the inclination of the end face of the measured piece can be further obtained.
Further, the flat plate and the extension plate are black. The design is black, so that the experimenter can measure the distance between the reflected light and the optical ray transmitting device conveniently, and the inclination of the measured end face can be measured and calculated.
The utility model has the advantages that:
the utility model discloses well reflection of light pastes piece and optical ray emitter's design, the reflection principle of make full use of light for detect the inclination of being surveyed a terminal surface, it generally detects the problem whether to have rust, fish tail, tool mark, surperficial roughness etc. by survey a detection device among the prior art to have compensatied, the detection device of this scheme is applicable to the quilt of different deformation degree and surveys the piece, application scope is wide, and detection device simple structure, and convenient to use, the installation is dismantled simply, detection efficiency is high, suitable popularization and application.
Drawings
Fig. 1 is a schematic view of a first structure of the present invention;
FIG. 2 is a schematic view of a measured object according to the present invention;
fig. 3 is a second schematic structural view of the present invention;
FIG. 4 is a schematic structural view of a support plate;
in the figure: 1-optical ray emission device, 2-measuring frame, 3-reflecting piece, 4-annular groove, 5-support plate, 6-sliding part, 7-support part, 8-flat plate, 9-extension plate and 10-measured piece.
Detailed Description
The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
A bending degree detection device is shown in figures 1-4 and comprises an optical ray emitting device 1, a measuring frame 2 for placing a measured piece 10 and a reflecting sticker 3 attached to the outer wall of the measured piece 10;
the top of the measuring frame 2 is provided with an opening, the optical ray emitting device 1 is arranged below the measuring frame 2, and the reflecting piece 3 and the optical ray emitting device 1 are on the same vertical line.
The working principle is as follows: firstly, the reflecting sticker 3 is pasted at the position of the measured piece 10 to be measured, the optical ray emitting device 1 is aligned to the light emitting sticker position of the measured piece 10, the reflecting sticker 3 can be arranged at any position of the end face of the measured piece 10, which needs to detect the inclination, then one side of the measured piece 10, which is provided with the reflecting sticker 3, is downwards placed above the measuring frame 2, and the reflecting sticker 3 and the optical ray emitting device 1 are on the same vertical line. The optical ray emitting device 1 is opened, the light beam emitted from the optical ray emitting device 1 vertically irradiates on the surface of the reflecting sticker 3, the top of the measuring frame 2 is provided with an opening instead of transparent glass, and the arrangement of the transparent glass can cause the refraction of light to influence the measuring precision. If the bottom side of the tested piece 10 is inclined, the reflecting patch 3 is also inclined. When the light beam irradiates the horizontal reflecting sticker 3, the light beam reflected on the surface of the reflecting sticker 3 returns to the optical ray emitting device 1 along the original path, the reflected light and the incident light are parallel, so that when the reflected light keeps a vertical state, the measured position of the measured piece 10 is a plane; when the light beam irradiates the inclined end face, the light beam reflected on the surface of the light reflecting sticker 3 is reflected in a certain angle deviation manner, so that the end face of the tested piece 10 is an inclined face when the reflected light deviation indicates that the tested end is inclined. The inclination degree of the end face is calculated according to the light reflection principle by measuring the distance from the ground to the optical ray emitting device 1 and the vertical distance from the optical ray emitting device 1 to the light reflecting sticker 3. The light beam emitted by the optical ray emitting device 1 is a parallel light beam.
The measured part 10 is deformed when being affected by the outside or changing, so that the receiving position of the original reflected light is changed, the farther the distance between the light receiving position and the vertical direction of the measured part 10 is, the higher the amplification factor of the change is, the more obvious the change is, under the condition that the precision of the checking fixture is not changed, the measured precision is amplified in multiples while the distance is amplified, and the micro angle of deflection of the corresponding position of the measured object is calculated by measuring the deflection position of the light, so that the high-precision detection result is obtained. When the light is thinner, the minimum radius of the area of the reflecting patch 3 in bonding contact with the measured piece 10 is equal to the minimum limit radius of the measured surface. The uniform deformation under uniform load can be referred to the deflection calculation method.
The specific use method comprises the following steps:
1. laying a flat plate 8 and an extension plate 9, placing the measuring frame 2 above the flat plate 8, placing the supporting parts 7 at two ends of the supporting plate 5 in the annular groove 4, and moving the supporting plate 5 so that a plurality of supporting points of a measured piece 10 are all placed above the measuring frame 2;
2. adhering the reflective sticker 3 to a part to be tested on the bottom surface of the tested piece 10, and placing the tested piece 10 above the measuring rack 2;
3. the optical ray emitting device 1 is placed below the tested piece 10, and the optical ray emitting device 1 and the light reflecting sticker 3 are on the same vertical line;
4. turning on the optical ray emitting device 1, emitting light vertically, reflecting the light to the light-emitting part, and reflecting the reflected light to the flat plate 8 or the extension plate 9;
5. the vertical distance between the reflecting sticker 3 and the optical ray emitting device 1 is measured, the distance between the optical ray emitting device 1 and the flat plate 8 or the extension plate 9 for reflecting light is calculated through a trigonometric function, the included angle between the reflecting light and the incident light can be obtained, and the inclination angle of the measured piece 10 at the reflecting sticker 3 is half of the included angle between the reflecting light and the incident light.
Example 2
Based on embodiment 1, the inner wall of the top of the measuring rack 2 is provided with an annular groove 4, and a support plate 5 is placed in the annular groove 4. The detection device is suitable for the detected workpiece 10 with few supporting points, for example, a heating device (electric heating device and the like) is arranged on the back surface of the detected workpiece, a fixed load instrument (hydraulic pressure, air pressure head and the like) is arranged on the back surface of the detected workpiece, the detected workpiece receives a certain natural load (a fan is arranged on the back surface to form wind pressure, water flow is arranged to form water flow impact) and the like, and the supporting mode of the detected workpiece 10 can also be central supporting to observe the deformation parameters of reverse bending. Therefore, because the deformation degree of the measured piece 10 is inconsistent, the size of the measured piece 10 is not consistent with the size of the top of the detection device, so that the supporting plate 5 moves in the annular groove, the adjusting position is matched with the size of the measured piece 10, the supporting point at the bottom of the measured piece 10 is placed at the top end of the measuring frame 2, the height of the measured piece 10 is kept consistent, and the measurement accuracy is ensured.
Example 3
Based on embodiment 2, backup pad 5 is the strip, and backup pad 5 includes slip portion 6 and supporting part 7, slip portion 6 is two sets of both ends of locating supporting part 7, and slip portion 6 slides in the opposition side of annular groove 4. When a plurality of supporting points of the tested piece 10 are arranged at the vertex angle of the tested piece 10, and the tested piece 10 is bent downwards at the center, the fixed end of the bottom of the tested piece 10 is placed at one vertex of the test frame and is relatively fixed, and meanwhile, the supporting part 7 is moved to enable the sliding part 6 to slide in the annular groove 4, so that the moving ends of the bottom of the tested piece 10 are arranged on the measuring frame 2 or the supporting part 7, and are kept horizontal, and subsequent measurement is facilitated; when the support mode of the measured piece 10 is central support, the support point is at the center, and the top of the measuring frame 2 is provided with an opening, so that the support plate 5 is moved to the position of the center of the opening by moving the support part 7, and the central support point at the bottom of the measured piece 10 can be placed on the support part 7, thereby facilitating the subsequent measurement of the end face inclination.
Example 4
Based on embodiment 3, the top end of the supporting plate 5 is at the same level with the top end of the measuring stand 2. The above design makes the supporting points of the tested piece 10 placed above the supporting points be in the same plane, so that the tested piece 10 is kept horizontal.
Example 5
Based on embodiment 4, the inner wall of the annular groove 4 is also provided with a rubber layer. The design of the rubber layer prevents the support plate 5 from sliding arbitrarily in the annular groove 4, and the support plate 5 can only slide under the condition of slight force application, so that the stability of the support point of the measured piece 10 on the measuring frame 2 is improved.
Example 6
Based on embodiment 1, the bottom of the measuring stand 2 is also provided with a flat plate 8.
The side edges of the flat plate 8 are connected with extension plates 9, grooves are formed in the side edges of the flat plate 8, and protruding blocks matched with the grooves are arranged on the extension plates 9. When the end face of the object 10 is inclined, the angle between the incident light and the reflected light is twice the inclination angle according to the principle of light reflection, so that the reflected light is far away from the vertical incident light, and the reflected light is likely to irradiate the outer side of the flat plate 8, so that the extension plate 9 is provided on the outer side of the flat plate 8, and the reflected light irradiates the extension plate 9. By measuring the distance from the reflected light beam to the optical ray emitting device 1 and the distance from the optical ray emitting device 1 to the light reflecting sticker 3, the reflected light angle can be measured, and the inclination of the end face of the measured piece 10 can be obtained. The flat plate 8 and the extension plate 9 are both black. The design is black, so that the experimenter can measure the distance between the reflected light and the optical ray emitting device 1 conveniently, and further measure and calculate the inclination of the measured end face.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The curvature detection device is characterized by comprising an optical ray emitting device (1), a measuring frame (2) for placing a measured piece and a reflective sticking piece (3) stuck to the outer wall of the measured piece;
the top of the measuring frame (2) is provided with an opening, the optical ray emitting device (1) is arranged below the measuring frame (2), and the light reflecting piece (3) and the optical ray emitting device (1) are arranged on the same vertical line.
2. The bending degree detection device according to claim 1, wherein an annular groove (4) is provided in the inner wall of the top of the measuring stand (2), and a support plate (5) is placed in the annular groove (4).
3. The bending degree detection device according to claim 2, wherein the support plate (5) is strip-shaped, the support plate (5) comprises two groups of sliding portions (6) and two groups of support portions (7), the two groups of sliding portions (6) are arranged at two ends of the support portions (7), and the sliding portions (6) slide on opposite sides of the annular groove (4).
4. The bending degree detection device according to claim 3, wherein the top end of the support plate (5) is level with the top end of the measuring stand (2).
5. The bending degree detection device according to claim 4, wherein a rubber layer is further provided on the inner wall of the annular groove (4).
6. The bending degree detection device according to claim 1, wherein the bottom of the measuring stand (2) is further provided with a flat plate (8).
7. The bending degree detection device according to claim 6, wherein an extension plate (9) is connected to the side edge of the flat plate (8), grooves are formed in the side edge of the flat plate (8), and protruding blocks matched with the grooves are arranged on the extension plate (9).
8. The bending detection device according to claim 7, wherein the flat plate (8) and the extension plate (9) are black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323260.3U CN211783345U (en) | 2020-03-16 | 2020-03-16 | Curvature detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323260.3U CN211783345U (en) | 2020-03-16 | 2020-03-16 | Curvature detection device |
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| CN211783345U true CN211783345U (en) | 2020-10-27 |
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| CN202020323260.3U Active CN211783345U (en) | 2020-03-16 | 2020-03-16 | Curvature detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218342A (en) * | 2021-06-08 | 2021-08-06 | 镇江市博驰汽车配件有限公司 | Axial leveling detection device and method for hydraulic motor |
| CN113753258A (en) * | 2021-09-22 | 2021-12-07 | 中国航空工业集团公司西安飞机设计研究所 | Bolt type installed airplane windshield glass small deflection calculation method |
-
2020
- 2020-03-16 CN CN202020323260.3U patent/CN211783345U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218342A (en) * | 2021-06-08 | 2021-08-06 | 镇江市博驰汽车配件有限公司 | Axial leveling detection device and method for hydraulic motor |
| CN113218342B (en) * | 2021-06-08 | 2023-02-28 | 镇江市博驰汽车配件有限公司 | Axial leveling detection device and method for hydraulic motor |
| CN113753258A (en) * | 2021-09-22 | 2021-12-07 | 中国航空工业集团公司西安飞机设计研究所 | Bolt type installed airplane windshield glass small deflection calculation method |
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