CN214173251U - Measuring device for form and position tolerance of automobile plate spring - Google Patents
Measuring device for form and position tolerance of automobile plate spring Download PDFInfo
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- CN214173251U CN214173251U CN202120272389.0U CN202120272389U CN214173251U CN 214173251 U CN214173251 U CN 214173251U CN 202120272389 U CN202120272389 U CN 202120272389U CN 214173251 U CN214173251 U CN 214173251U
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Abstract
The utility model relates to a measuring device of car leaf spring geometric tolerances, including setting up at the leaf spring that awaits measuring first camera, second camera and structure light projector and the drive platform with one side, structure light projector is in between first camera and the second camera, first camera, second camera and structure light projector respectively with host computer signal connection. The first camera, the second camera and the structured light projector are respectively in signal connection with an upper computer through data lines. The driving platform is used for supporting the first camera, the second camera and the structured light projector, and the driving platform can adjust the position relation among the first camera, the second camera, the structured light projector and the plate spring to be measured.
Description
Technical Field
The utility model belongs to the technical field of the automobile parts makes, concretely relates to measuring device of car leaf spring geometric tolerances.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
The inventor knows that most automobile plate spring production enterprises adopt the tool check tool to detect the form and position elements (such as perpendicularity, parallelism, circular run-out and the like) of the automobile plate spring in the form and position error detection after the plate spring is formed. The workpiece is clamped in the detection process, and the detection tool is used for measuring and comparing, so that the operation is troublesome. Moreover, workers are easy to fatigue after working for a long time, and the detection result of the form and position tolerance of the workpiece is also influenced.
In order to improve the product quality, automobile plate spring manufacturing enterprises need a device which can completely replace manpower, has high efficiency and high quality and is suitable for detecting the form and position tolerance of the plate spring, thereby greatly reducing the production and processing cost, improving the working efficiency and improving the purpose of detecting the form and position tolerance of the plate spring.
Disclosure of Invention
The utility model aims at providing a measuring device of car leaf spring geometric tolerances can solve one of above-mentioned technical problem at least.
In order to achieve the above object, one or more embodiments of the present invention provide a measuring device for form and position tolerance of an automobile plate spring, including a first camera, a second camera and a structured light projector disposed on the same side of a plate spring to be measured, wherein the structured light projector is located between the first camera and the second camera, and the first camera, the second camera and the structured light projector are respectively connected to an upper computer through signals.
As a further improvement, the first camera, the second camera and the structured light projector are respectively connected with the upper computer through data lines.
As a further improvement, the device further comprises a driving platform, wherein the driving platform is used for supporting the first camera, the second camera and the structured light projector, and the driving platform can adjust the position relationship among the first camera, the second camera, the structured light projector and the plate spring to be measured.
As a further improvement, the driving platform comprises a first slide rail, a first slide block is mounted on the first slide rail, a second slide rail and a third slide rail which are perpendicular to the first slide rail are respectively fixed at two ends of the first slide rail, a second slide block is mounted on the second slide rail, a third slide block is mounted on the third slide rail, the first slide block can slide and be fixed along the first slide rail, the second slide block can slide and be fixed along the second slide rail, and the third slide block can slide and be fixed along the third slide rail; the structured light projector is mounted on the upper portion of the first slider, the first camera is mounted on the upper portion of the second slider, and the second camera is mounted on the upper portion of the third slider.
As a further improvement, a first locking screw is arranged on the outer wall of the first sliding block, and the head of the first locking screw can penetrate through a screw hole in the first sliding block and is tightly pressed on the side face of the first sliding rail; a second locking screw is arranged on the outer wall of the second sliding block, and the head of the second locking screw can penetrate through a screw hole in the second sliding block and is tightly pressed on the side face of the second sliding rail; the outer wall department of third slider is equipped with third locking screw, and the head of third locking screw can pass the screw on the third slider and sticiss in the side department of third slide rail.
As a further improvement, the upper surfaces of the first slider, the second slider and the third slider are respectively provided with a rotary table, the rotary table can rotate along a vertical axis and is fixed, and the upper surface of the rotary table is provided with the first camera or the second camera or the structured light projector.
As a further improvement, the first slide rail, the second slide rail and the third slide rail are in a cross-shaped structure.
As a further improvement, the second slide rail and the third slide rail are symmetrically arranged with respect to the first slide rail.
The beneficial effects of one or more of the above technical solutions are as follows:
the utility model discloses utilize two discernment cameras to constitute two mesh discernment cameras, utilize the three-dimensional scanning and the modeling of structure light projector and two mesh discernment cameras, host computer's cooperation can realize the leaf spring that awaits measuring, be convenient for come the form and position tolerance of analytic car leaf spring according to three-dimensional model. Compared with a mode of direct measurement of the detection tool, the detection precision and efficiency can be effectively improved.
The driving platform is adopted to adjust the position relation among the first camera, the second camera, the structured light projector and the plate spring to be measured, so that the projection range of the structured light projector can be conveniently adjusted, and the device is suitable for three-dimensional scanning of the plate springs to be measured with different sizes and other members to be measured.
Drawings
The accompanying drawings, which form a part of the specification, are provided to provide a further understanding of the invention, and are included to explain the illustrative embodiments and the description of the invention, and not to constitute a limitation of the invention.
Fig. 1 is a schematic view of the overall structure of one or more embodiments of the present invention;
fig. 2 is a schematic view of a working principle of the binocular camera used in cooperation with one or more embodiments of the present invention;
fig. 3 is a schematic structural diagram of a driving platform according to one or more embodiments of the present invention;
fig. 4 is a schematic structural diagram of a turntable disposed on an upper portion of the second slider according to one or more embodiments of the present invention.
In the figure, 1, a computer; 2. a first camera; 3. a structured light projector; 4. a second camera; 5. a plate spring to be tested; 6. a second slider; 7. a second slide rail; 8. a first slider; 9. a first slide rail; 10. a third slide rail; 11. a third slider; 12. a second locking screw; 13. rotating the plate; 14. a mounting seat; 15. a turntable screw.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up, down, left, right" in the present invention, if appearing, are intended to correspond only to the upper, lower, left, right directions of the drawings themselves, not to limit the structure, but merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
In an exemplary embodiment of the present invention, as shown in fig. 1 to 3, a device for measuring form and position tolerance of a leaf spring of an automobile is provided, which includes a first camera 2, a second camera 4 and a structured light projector 3 disposed on the same side of a leaf spring 5 to be measured, the structured light projector 3 is disposed between the first camera 2 and the second camera 4, and the first camera 2, the second camera 4 and the structured light projector 3 are respectively connected to an upper computer 1 through signals.
As a further improvement, the first camera 2, the second camera 4 and the structured light projector 3 are respectively connected with the upper computer 1 through data lines.
As a further improvement, the system further comprises a driving platform, wherein the driving platform is used for supporting the first camera 2, the second camera 4 and the structured light projector 3, and the driving platform can adjust the position relationship among the first camera 2, the second camera 4, the structured light projector 3 and the plate spring 5 to be measured.
As a further improvement, the driving platform comprises a first slide rail 9, a first slide block 8 is mounted on the first slide rail 9, a second slide rail 7 and a third slide rail 10 which are perpendicular to the first slide rail 9 are respectively fixed at two ends of the first slide block 8, a second slide block 6 is mounted on the second slide rail 7, a third slide block 11 is mounted on the third slide rail 10, the first slide block 8 can slide and be fixed along the first slide rail 9, the second slide block 6 can slide and be fixed along the second slide rail 7, and the third slide block 11 can slide and be fixed along the third slide rail 10; the structured light projector 3 is mounted on top of the first slide 8, the first camera 2 is mounted on top of the second slide 6, and the second camera 4 is mounted on top of the third slide 11.
As a further improvement, a first locking screw is arranged on the outer wall of the first sliding block 8, and the head of the first locking screw can pass through a screw hole on the first sliding block 8 and is tightly pressed on the side surface of the first sliding rail 9; a second locking screw 12 is arranged on the outer wall of the second sliding block 6, and the head of the second locking screw 12 can penetrate through a screw hole on the second sliding block 6 and is tightly pressed on the side surface of the second sliding rail 7; the outer wall of the third sliding block 11 is provided with a third locking screw, and the head of the third locking screw can penetrate through a screw hole in the third sliding block and is tightly pressed on the side face of the third sliding rail.
As a further improvement, the upper surfaces of the first, second and third sliders 8, 6, 11 are respectively provided with a turntable which can rotate along a vertical axis and is fixed, and the upper surface of the turntable is provided with the first camera 2 or the second camera 4 or the structured light projector 3.
Specifically, taking the second slider as an example, a mounting seat is fixed on the upper portion of the second slider, a rotating shaft is rotatably mounted in the mounting seat, a rotating plate is connected to the upper end of the rotating shaft, and a camera or a structured light projector is fixed on the rotating plate. One side of mount pad sets up the revolving stage screw, and the revolving stage screw passes can sticis in the pivot behind the screw of the lateral wall of mount pad to this locking that realizes pivot and commentaries on classics board.
As a further improvement, the first slide rail 9, the second slide rail 7 and the third slide rail 10 are in a cross-shaped structure.
As a further improvement, the second slide rail 7 and the third slide rail 10 are arranged symmetrically with respect to the first slide rail 9.
In this embodiment, the first slide rail, the second slide rail and the third slide rail are i-shaped.
In other embodiments, the shapes of the first sliding rail, the second sliding rail and the third sliding rail can be set by those skilled in the art, and are not described herein again.
Specifically, the utility model discloses a method that binocular camera adds structured light detects the geometric tolerances of car leaf spring, and its rationale is the principle of binocular camera (as shown in fig. 2), at first adopts the grating code pattern that the projecting apparatus throws the design to the measurement object surface, then is gathered by binocular camera synchronization, and two cameras do the phase place to the grating image respectively and unpack the algorithm, and here left side camera and projecting apparatus constitute a monocular structured light measurement system, and right side camera also constitutes a monocular structured light system with the projecting apparatus. And matching binocular vision by using the phase information, and then reconstructing a three-dimensional point cloud for the measured object in a binocular vision reconstruction mode.
Similar according to the triangle:
substituting the formula (1) into the formula (2) to obtain:
find the depth d ═ x of the real objectl-xrThe relationship between them. Where the focal length f and the baseline b are known parameters of the camera.
When the device is used, firstly, calibrating a left camera and a right camera to obtain distortion parameters of the left camera and the right camera and a translation matrix and a rotation matrix of the two cameras; then the projector is used for projecting the structured light coding pattern, the binocular camera transmits the collected image to the computer, the image is processed to obtain the three-dimensional information of the surface of the measured object, and the whole three-dimensional reconstruction process is completed; and finally, resolving the reconstructed three-dimensional graph, and selecting required point, line and surface elements to finish the detection of the form and position tolerance of the automobile plate spring.
It should be noted that the structured light and binocular recognition camera completes three-dimensional modeling of the object surface, which belongs to the prior art, and the above contents of the scheme are only brief descriptions of the working principle. The principle that the binocular recognition camera is matched with the structured light projector to complete three-dimensional modeling is not innovated in the scheme, and the mode that three-dimensional space analysis is carried out after three-dimensional modeling to obtain size and tolerance data also adopts the existing computer program without improvement.
The working principle is as follows: when the device is used, the driving platform is arranged on one side of the measuring position of the plate spring to be measured, the first camera, the second camera and the structured light projector are installed on the driving platform, the relative positions of the first camera, the second camera and the structured light projector are adjusted according to the size and the position of the plate spring to be measured, and after the adjustment is finished, all the parts are fixed on the driving platform.
And forming a dual-purpose recognition camera by using the first camera and the second camera, controlling the first camera, the second camera and the structured light projector by the upper computer to complete three-dimensional modeling of the plate spring to be tested, and performing spatial analysis on the three-dimensional model to obtain a tolerance value of the plate spring.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (9)
1. The measuring device is characterized by comprising a first camera, a second camera and a structured light projector which are arranged on the same side of the leaf spring to be measured, wherein the structured light projector is arranged between the first camera and the second camera, and the first camera, the second camera and the structured light projector are respectively in signal connection with an upper computer.
2. The device for measuring form and position tolerance of automobile plate springs according to claim 1, wherein the first camera, the second camera and the structured light projector are respectively in signal connection with an upper computer through data lines.
3. The apparatus for measuring form and position tolerance of automotive leaf springs according to claim 1, further comprising a driving platform for supporting the first camera, the second camera and the structured light projector, the driving platform being capable of adjusting the positional relationship between the first camera, the second camera, the structured light projector and the leaf spring to be measured.
4. The device for measuring the form and location tolerance of the automobile plate spring as claimed in claim 3, wherein the driving platform comprises a first slide rail, a first slide block is mounted on the first slide rail, a second slide rail and a third slide rail perpendicular to the first slide rail are respectively fixed at two ends of the first slide block, a second slide block is mounted on the second slide rail, a third slide block is mounted on the third slide rail, the first slide block can slide and be fixed along the first slide rail, the second slide block can slide and be fixed along the second slide rail, and the third slide block can slide and be fixed along the third slide rail;
the structured light projector is mounted on the upper portion of the first slider, the first camera is mounted on the upper portion of the second slider, and the second camera is mounted on the upper portion of the third slider.
5. The device for measuring the form and position tolerance of the automobile plate spring is characterized in that a first locking screw is arranged on the outer wall of the first sliding block, and the head of the first locking screw can penetrate through a screw hole in the first sliding block and is tightly pressed at the side face of the first sliding rail; a second locking screw is arranged on the outer wall of the second sliding block, and the head of the second locking screw can penetrate through a screw hole in the second sliding block and is tightly pressed on the side face of the second sliding rail; the outer wall department of third slider is equipped with third locking screw, and the head of third locking screw can pass the screw on the third slider and sticiss in the side department of third slide rail.
6. The apparatus for measuring form and position tolerance of automobile plate spring according to claim 4, wherein the upper surfaces of the first, second and third sliding blocks are respectively provided with a rotary table which can rotate along a vertical axis and is fixed, and the upper surface of the rotary table is provided with the first or second camera or the structured light projector.
7. The device for measuring form and position tolerance of automobile plate springs as claimed in claim 4, wherein the first slide rail, the second slide rail and the third slide rail are in a cross-shaped structure.
8. The apparatus for measuring form and position tolerance of automobile plate spring according to claim 7, wherein the second slide rail and the third slide rail are symmetrically arranged with respect to the first slide rail.
9. The device for measuring form and position tolerance of automobile plate springs as claimed in claim 4, wherein the first slide rail, the second slide rail and the third slide rail are I-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120272389.0U CN214173251U (en) | 2021-01-29 | 2021-01-29 | Measuring device for form and position tolerance of automobile plate spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120272389.0U CN214173251U (en) | 2021-01-29 | 2021-01-29 | Measuring device for form and position tolerance of automobile plate spring |
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| Publication Number | Publication Date |
|---|---|
| CN214173251U true CN214173251U (en) | 2021-09-10 |
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ID=77594411
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120272389.0U Active CN214173251U (en) | 2021-01-29 | 2021-01-29 | Measuring device for form and position tolerance of automobile plate spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214173251U (en) |
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2021
- 2021-01-29 CN CN202120272389.0U patent/CN214173251U/en active Active
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