CN202994091U - A Calibration Plate Accuracy Detector - Google Patents

Abstract

The utility model relates to an automated inspection technical field especially relates to a calibration plate precision detector, including marble workstation, glass test platform, portal frame, image system, laser scanner and industrial control machine, glass test platform sets up in the upper surface of marble workstation, and the portal frame sets up on the marble workstation, and the image system sets up in the portal frame, and laser scanner fixed connection is in the bottom of image system, the bottom and marble workstation sliding connection of portal frame, image system and portal frame sliding connection, still be provided with the second actuating mechanism that drives the portal frame and remove along the portal frame along the first actuating mechanism of marble workstation back-and-forth movement and drive image system, image system and laser scanner are just to glass test platform and be connected with industrial control electromechanical. The utility model discloses can detect the horizontal accuracy and the vertical accuracy of calibration plate, it is high to detect the precision, and application scope is wide.

Description

A Calibration Plate Accuracy Detector

technical field

The utility model relates to the technical field of automatic detection, in particular to a calibration plate precision detector.

Background technique

In applications such as machine vision, image measurement, photogrammetry, and three-dimensional reconstruction, in order to correct lens distortion, determine the conversion relationship between physical size and pixel, and determine the relationship between the three-dimensional geometric position of a point on the surface of a space object and its corresponding point in the image It is necessary to establish a geometric model of camera imaging. The geometric model of the camera can be obtained by shooting a flat plate with a fixed-pitch pattern array by the camera, and calculated by the calibration algorithm, so as to obtain high-precision measurement and reconstruction results. The flat plate with a fixed-pitch pattern array is the calibration plate.

With the increasing development of the testing industry, large-sized machines have become a trend, and the calibration and accuracy of large-sized testing machines have become an important technical parameter that everyone pays attention to. There is no testing equipment for calibration and precision of calibration plates in the prior art.

Contents of the invention

The purpose of the utility model is to provide a calibration plate precision detector which can detect horizontal precision and vertical precision, has high detection precision and wide application range.

In order to achieve the above object, the utility model adopts the following technical solutions: a calibration plate precision detector, including marble workbench, glass test platform, gantry, image system, laser scanner and industrial control machine, the glass test platform is set on the marble On the upper surface of the workbench, the gantry is set on the marble workbench, the image system is set on the gantry, the laser scanner is fixedly connected to the bottom of the image system, the bottom of the gantry is slidingly connected to the marble workbench, and the image system Slidingly connected with the gantry, the gantry is also equipped with a first drive mechanism that drives the gantry to move back and forth along the marble workbench and a second drive mechanism that drives the imaging system to move left and right along the gantry. The glass test platform is connected with the industrial control electromechanical. the

Wherein, a protective cover is also provided on the outside of the imaging system.

Wherein, the gantry includes a cross bar and upright columns arranged at both ends of the cross bar, the cross bar is arranged parallel to the marble workbench, the marble workbench is provided with a first chute, and the bottom of the upright column is provided with a first bump, The first projection is slidably connected to the first slide groove, the second slide groove is arranged on the protective cover, the second projection is arranged on the top of the cross bar, and the second projection is slidably connected to the second slide groove.

Wherein, the first driving mechanism is arranged on the column, and the second driving mechanism is arranged on the cross bar.

Wherein, both the first driving mechanism and the second driving mechanism are motors.

Wherein, the industrial control machine is provided with a motor control system.

Wherein, the imaging system includes a CCD camera and a CCD lens, the CCD camera is connected to the top of the CCD lens, the gantry is provided with a lens sheath, and the CCD lens is socketed with the lens sheath.

Wherein, the bottom of the marble workbench is provided with feet.

The beneficial effect of the utility model is that: the utility model adopts the imaging system for image collection, real-time observation, laser scanner positioning, line-by-line scanning for data collection, can detect horizontal and vertical precision, and comprehensively adjust and evaluate the entire calibration board , the collected data is processed by the industrial control machine to judge the accuracy level of the calibration plate, and the detection accuracy is high; the marble workbench is stable and large in size, which can ensure that the measurement will not be affected by external vibrations and make the test system more stable; the accuracy of the glass test platform High, the flatness series of the base surface is zero, which makes the detection accuracy more accurate; the use of industrial control machines can accurately and quickly analyze the detection points, and can process and count the later data, and analyze factors in the production process; The driving mechanism can be adjusted, and can be applied to calibration plates of various sizes, with a wide range of applications.

Description of drawings:

Fig. 1 is the three-dimensional structure schematic diagram of calibration plate accuracy detector described in the utility model;

Fig. 2 is a three-dimensional structural schematic diagram of the industrial control machine described in the utility model;

Fig. 3 is a schematic diagram of the three-dimensional structure of the imaging system described in the present invention;

Among them, 1. Marble workbench 11 first chute 2. Glass test platform 3. Gantry 31. Cross bar 311． Second bump 32. column 321． First bump 33. Lens sheath 4． Video system 41. CCD camera 42． CCD lens 5． Laser scanner 6. Industrial control machine 7. protective cover 71． The second chute 8. Motor 9. footing.

Detailed ways:

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings 1 to 3, and the content mentioned in the implementation mode is not a limitation of the utility model.

As shown in Figures 1 to 3, a calibration plate accuracy detector includes a marble workbench 1, a glass test platform 2, a gantry 3, an imaging system 4, a laser scanner 5 and an industrial control machine 6, and the glass test platform 2 is set on the marble On the upper surface of the workbench 1, the gantry 3 is set on the marble workbench 1, the video system 4 is set on the gantry 3, the laser scanner 5 is fixedly connected to the bottom of the video system 4, and the bottom of the gantry 3 works with the marble Table 1 is slidably connected, and the image system 4 is slidably connected to the gantry 3. The gantry 3 is also provided with a first driving mechanism that drives the gantry 3 to move back and forth along the marble workbench 1 and drives the image system 4 to move along the gantry. 3. The second drive mechanism that moves left and right, the imaging system 4 and the laser scanner 5 face the glass test platform 2 and are electrically connected with the industrial control machine 6. the

When the utility model is used, the calibration plate to be detected is placed on the glass test platform 2, and the horizontal and vertical positions of the calibration plate to be detected are initially adjusted with a horizontal and vertical ruler; 4. Carry out image acquisition, the laser scanner 5 scans the data for the first time, if it is vertical, the data is all 0, and there is no position deviation. According to the positive and negative values of the data, slowly adjust the calibration plate to be detected until all the data are 0, that is, it is to be detected The calibration plate is horizontal and vertical to the glass test platform 2; through the industrial control computer 6, the first driving mechanism and the second driving mechanism are set for the grid value, and the first driving mechanism and the second driving mechanism drive the imaging system 4 and the laser scanner 5 Move, scan the image and data line by line of the calibration plate to be tested, and analyze the accuracy level through data collection; the imaging system 4 collects the entire image, saves the picture, and can set the size of the defect, and make a coordinate image of the "NG" point of the defect Save and save data to facilitate later quality analysis; the test result can be judged by setting the maximum error data point, if the maximum error is not exceeded, the tested board "PASS" will be regarded as a standard qualified product, if the maximum error is exceeded, the imaging system 4 and laser scanning The device 5 will stay at the coordinates of the detection point for analysis, which is convenient for later stage classification.

The utility model adopts image system 4 for image collection, real-time observation, and laser scanner 5 for positioning and line-by-line scanning for data collection, which can detect horizontal and vertical precision, comprehensively adjust and evaluate the entire calibration board, and collect data The processing of the industrial control machine 6 can judge the accuracy level of the calibration plate, and the detection accuracy is high; the marble workbench 1 is stable and large in size, which can ensure that the measurement will not be affected by external vibrations, making the test system more stable; the glass test platform 2 has high precision, The flatness series of the base surface is zero, which makes the detection accuracy more accurate; the use of industrial control machine 6 can accurately and quickly analyze the detection points, and can process and count the data in the later stage, and analyze the factors in the production process; Mechanism adjustment can be applied to calibration plates of various sizes, with a wide range of applications.

In this embodiment, a protective cover 7 is also provided on the outside of the imaging system 4 . The protective cover 7 is used for the dustproof and anti-collision of the imaging system 4 and the laser scanner 5 , and can also be used for the sliding connection between the imaging system 4 and the gantry 3 .

In this embodiment, the gantry 3 includes a cross bar 31 and upright columns 32 arranged at both ends of the cross bar 31, the cross bar 31 is arranged parallel to the marble workbench 1, and the marble workbench 1 is provided with a first chute 11 , the bottom of the column 32 is provided with a first protrusion 321, the first protrusion 321 is slidably connected with the first chute 11, the protective cover 7 is provided with a second chute 71, and the top of the cross bar 31 is provided with a second The protruding block 311 and the second protruding block 311 are slidably connected with the second slide groove 71 . The arrangement of the sliding connection between the first bump 321 and the first chute 11 is used for the gantry 3 to move back and forth along the marble workbench 1 to realize the front and rear detection of the imaging system 4 and the laser scanner 5. The second bump 311 and the second slide The setting of the sliding connection of the slot 71 is used for the left and right movement of the imaging system 4 along the gantry 3 to realize the left and right detection of the imaging system 4 and the laser scanner 5 .

In this embodiment, the first driving mechanism is arranged on the column 32 , and the second driving mechanism is arranged on the cross bar 31 . The setting of the first driving mechanism is used to drive the gantry 3 to move back and forth along the marble workbench 1, and the setting of the second driving mechanism is used to drive the imaging system 4 to move left and right along the gantry 3, so as to realize the sequential movement of the imaging system 4 and the laser scanner 5. line detection.

In this embodiment, both the first driving mechanism and the second driving mechanism are motors 8 . As a driving mechanism, the motor 8 has the advantages of simple structure, good reliability, small size, light weight, large carrying capacity, low noise and good stability.

In this embodiment, the industrial control machine 6 is provided with a motor control system. The motor control system can control the motor 8 to drive the image system 4 and the laser scanner 5 to move, scan the image and data of the calibration plate to be detected line by line, and analyze the accuracy level through data collection; the detection result can be determined by setting the maximum error data point , if the maximum error is not exceeded, the detected board "PASS" is regarded as a standard qualified product. If the maximum error is exceeded, the imaging system 4 and laser scanner 5 will stay at the coordinates of the detection point for analysis, which is convenient for later stage classification.

In the present embodiment, described imaging system 4 comprises CCD camera 41 and CCD lens 42, and CCD camera 41 is connected to the top of CCD lens 42, and described gantry 3 is provided with lens sheath 33, and CCD lens 42 and lens sheath 33 sockets. The imaging system 4 collects images and sends them to the industrial control machine 6 for analysis. The size of the defect can be set, and the coordinate image and data of the "NG" point of the defect can be saved to facilitate later quality analysis.

In this embodiment, feet 9 are provided at the bottom of the marble workbench 1 . The setting of foot 9 is convenient for carrying and moisture-proof of the present utility model, and foot 9 is set to 4, is positioned at four corners of marble workbench 1 bottoms respectively.

The above-mentioned embodiment is a preferred realization scheme of the utility model. In addition, the utility model can also be realized in other ways, and any obvious replacement is within the scope of protection of the utility model without departing from the inventive concept of the utility model. within.

Claims (8)

1. scaling board instrument for testing precision, it is characterized in that: comprise the marble worktable, the glass test platform, portal frame, image system, laser scanner and Industrial Control Computer, the glass test platform is arranged at the upper surface of marble worktable, portal frame is arranged on the marble worktable, image system is arranged at portal frame, laser scanner is fixedly connected on the bottom of image system, the bottom of described portal frame and marble worktable are slidably connected, described image system and portal frame are slidably connected, also be provided with on described portal frame and drive the first driving mechanism that portal frame moves forward and backward along the marble worktable and drive the second driving mechanism that image system moves left and right along portal frame, image system and laser scanner over against the glass test platform and with the Industry Control mechatronics.

2. a kind of scaling board instrument for testing precision according to claim 1, it is characterized in that: the outside of described image system also is provided with protective cover.

3. a kind of scaling board instrument for testing precision according to claim 2, it is characterized in that: described portal frame comprises cross bar and is arranged at the column at cross bar two ends, cross bar and described marble worktable be arranged in parallel, be provided with the first chute on the marble worktable, the bottom of column is provided with the first projection, and the first projection and the first chute are slidably connected, and is provided with the second chute on described protective cover, the top of cross bar is provided with the second projection, and the second projection and the second chute are slidably connected.

4. a kind of scaling board instrument for testing precision according to claim 3, it is characterized in that: described the first driving mechanism is arranged on described column, and described the second driving mechanism is arranged on described cross bar.

5. a kind of scaling board instrument for testing precision according to claim 4, it is characterized in that: described the first driving mechanism and the second driving mechanism are motor.

6. a kind of scaling board instrument for testing precision according to claim 5, it is characterized in that: described Industrial Control Computer is provided with electric machine control system.

7. a kind of scaling board instrument for testing precision according to claim 1, it is characterized in that: described image system comprises CCD camera and CCD camera lens, the CCD camera is connected in the top of CCD camera lens, is provided with the camera lens sheath on described portal frame, CCD camera lens and the socket of camera lens sheath.

8. a kind of scaling board instrument for testing precision according to claim 1, it is characterized in that: the bottom of described marble worktable is provided with footing.

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