An automatic test bench and method for angular deviation of large transparent parts

Abstract

The present invention discloses a large transparent part angular deviation automatic test bench and method, including a test bench body. An installation groove is provided in the middle of the test bench body, and a workpiece to be tested is installed inside the installation groove; a test device and a driving device are also provided on the test bench body; the test device includes a first test device and a second test device; wherein, the first test device and the second test device are respectively arranged on both sides of the workpiece to be tested; the first test device and the second test device are installed on the driving device. In the present invention, the driving device drives the first test device and the second test device to move horizontally and vertically to perform point-by-point detection on the workpiece to be tested; through the device in the present application, the test problem of large transparent parts is effectively solved. The driving device drives the test device to perform fixed-point detection on the workpiece to be tested, which facilitates the detection of the workpiece to be tested and improves the test efficiency of large transparent parts.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical detection of transparent parts, and specifically relates to an automatic test bench and method for the angular deviation of large transparent parts. Background Technique

[0002] When light passes through a medium, there are various effects that cause the light to deviate from its original propagation trajectory. Therefore, when people observe an object through an optical medium that produces this phenomenon, they will feel that the image of the observed object has changed. Angular deviation is a physical quantity that describes the change in the optical propagation direction caused by light passing through a transparent material, and it is one of the important optical parameters for evaluating transparent part materials. The front windshield glass of cabs of automobiles, trains, ships, etc. all need to be tested for this index, and the level of this index directly affects driving safety.

[0003] The existing testing method is to perform manual measurement using the collimating telescope method. First, install the transparent part to be tested on the specimen support, then perform coaxial calibration on the entire collimating telescope instrument, adjust the coordinates of the dividing drawing board on the focal plane of the collimating objective lens to coincide with the coordinates of the scale board on the focal plane of the telescope, and then adjust the position to be measured of the workpiece to be tested for measurement. Observe through the eyepiece, and respectively record the angular deviation components of the dividing drawing board 01 deviating from the scale board 02 on the X and Y axes, and calculate the angular deviation value of the current test point. When testing the next point, adjust the specimen support to move up, down, left, and right.

[0004] The existing technology is a full-process manual test, and the transparent part to be tested can only be installed vertically, and the collimating telescope can only be installed horizontally. Transparent parts with too large an area and mass cannot adapt to this installation method, which results in that this method can only measure small transparent parts, and the test efficiency is low. For each test point, it is necessary to adjust the position of the specimen support up, down, left, or right before the next test point can be tested, and continuous testing cannot be performed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic test bench and method for the angular deviation of large transparent parts, so as to solve the problems in the existing technology in the background technique that for the testing of large transparent parts, only manual detection can be carried out, resulting in low detection efficiency and inability to continuously detect.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An automatic test bench for the angular deviation of large transparent parts includes a test bench body. An installation groove is provided in the middle of the test bench body, and a workpiece to be tested is installed inside the installation groove; a testing device and a driving device are also provided on the test bench body;

[0008] The test device includes a first test device, a second test device and a mounting block; wherein, the first test device and the second test device are respectively arranged on the upper and lower sides of the workpiece to be tested; and the first test device and the second test device are respectively arranged on two mounting blocks;

[0009] The driving device includes a lateral driving device and a longitudinal driving device; the first test device and the second test device are respectively arranged on two sets of lateral driving devices, and the two sets of lateral driving devices are both connected to the longitudinal driving device, and the longitudinal driving device is arranged on both sides of the test bench body.

[0010] According to the above technical solution, the lateral driving device includes a first driving motor, a first transmission lead screw, a first mounting seat and a first bracket; the first driving motor is fixedly installed on the first mounting seat, and one end of the first transmission lead screw passes through the first mounting seat and is connected to the first driving motor; the other end of the first transmission lead screw is connected to the first bracket arranged on the side of the test bench body.

[0011] According to the above technical solution, the lateral driving device further includes a connecting plate, the first mounting seat is connected to the connecting plate, and both ends of the connecting plate are respectively connected to two sets of lateral driving devices.

[0012] According to the above technical solution, the lateral driving device further includes a first guide rail, and both ends of the first guide rail are respectively arranged on the first mounting seat and the first bracket.

[0013] According to the above technical solution, the longitudinal driving device includes a second driving motor, a second transmission lead screw, a second mounting seat, a second bracket and a fixed bracket; the second mounting seat is arranged on the second bracket, the second driving motor is fixedly arranged on the second mounting seat, and one end of the second transmission lead screw passes through the second mounting seat and is connected to the second motor; the other end of the second transmission lead screw passes through the connecting plate and is connected to the fixed bracket.

[0014] According to the above technical solution, the longitudinal driving device further includes a second guide rail, and both ends of the second guide rail are respectively arranged on the second bracket and the fixed bracket.

[0015] According to the above technical solution, the mounting block includes a first side plate and a second side plate, and the first side plate and the second side plate form a U-shaped structure.

[0016] According to the above technical solution, connection holes are arranged on the side walls of the first side plate and the second side plate, and the connection holes are used for installing the test device.

[0017] According to the above technical solution, a third side plate is further arranged below the mounting block, and a distance sensor is installed on the third side plate.

[0018] An automatic test method for the angular deviation of a large transparent part includes the following steps:

[0019] Step S1: Place the workpiece to be tested in the installation groove of the test bench body;

[0020] Step S2: Drive the testing device to the edge of the test bench body through the longitudinal driving device, then drive the testing device to one side of the workpiece to be tested through the transverse driving device, and adjust the position of the testing device to align the testing device with the workpiece to be tested, and determine the initial test point;

[0021] Step S3: Detect the workpiece to be tested point by point through the testing device, with a distance of 5 mm between each detection point, and drive the testing device to move transversely according to a fixed displacement of 5 mm through the transverse driving device until the other side of the workpiece to be tested, and the first row of test points of the workpiece to be tested ends;

[0022] Step S4: Drive the testing device to move longitudinally by 5 mm through the longitudinal driving device, and then drive the testing device to move in the opposite direction to the end of the first row of test points of the workpiece to be tested through the transverse driving device, and continuously detect the second row of test points of the workpiece to be tested until the second row of test points ends, and so on;

[0023] Step S5: Repeat Steps S3 and S4 until the detection of the workpiece to be tested is completed;

[0024] Step S6: Judge whether the workpiece to be tested is qualified according to the angular deviation value obtained by the detection.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the present invention, by providing an installation groove on the test bench body, the workpiece to be tested is arranged inside the installation groove to keep the workpiece to be tested stationary, the first testing device and the second testing device are respectively arranged on the upper and lower sides of the workpiece to be tested, and then the first testing device and the second testing device are driven to move horizontally and longitudinally through the driving device to detect the workpiece to be tested point by point; through the device in the present application, the testing problem of large transparent parts is effectively solved, and the testing device is driven by the driving device to perform fixed-point detection on the workpiece to be tested, which facilitates the detection of the workpiece to be tested and improves the testing efficiency of large transparent parts. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the partial enlarged structure at A of the present invention;

[0029] Figure 3 It is a schematic diagram of the partial enlarged structure at B of the present invention;

[0030] Figure 4 It is one of the schematic diagrams of the angular deviation calculation of the present invention;

[0031] Figure 5 This is the second schematic diagram for calculating the angular deviation of the present invention.

[0032] Markings in the figure: 100 - test bench body, 200 - workpiece to be tested, 300 - first test device, 400 - second test device, 500 - mounting block, 501 - first side plate, 502 - second side plate, 503 - connection hole, 504 - third side plate, 505 - distance sensor, 600 - first driving motor, 700 - first transmission screw, 800 - first mounting seat, 900 - connecting plate, 110 - first guide rail, 111 - second driving motor, 112 - second transmission screw, 113 - second mounting seat, 114 - second bracket, 115 - fixed bracket, 116 - second guide rail, 117 - limit switch, 118 - first bracket. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1

[0035] As Figure 1 shown, a large transparent part angular deviation automatic test bench includes a test bench body 100. An installation groove is provided in the middle of the test bench body 100, and a workpiece 200 to be tested is installed inside the installation groove; a test device and a driving device are also provided on the test bench body 100;

[0036] The test device includes a first test device 300, a second test device 400, and a mounting block 500; wherein, the first test device 300 and the second test device 400 are respectively arranged on the upper and lower sides of the workpiece 200 to be tested; and the first test device 300 and the second test device 400 are respectively arranged on two mounting blocks 500;

[0037] The driving device includes a horizontal driving device and a vertical driving device; the first test device 300 and the second test device 400 are respectively arranged on two sets of horizontal driving devices, and the two sets of horizontal driving devices are both connected to the vertical driving device, and the vertical driving device is arranged on the side of the test bench body 100.

[0038] In the present invention, by providing an installation groove on the test bench body 100, the workpiece to be tested 200 is arranged inside the installation groove to keep the workpiece to be tested 200 stationary. The first test device 300 and the second test device 400 are respectively arranged on the upper and lower sides of the workpiece to be tested 200, and then the first test device 300 and the second test device 400 are driven by a driving device to move horizontally and vertically to perform point-by-point detection on the workpiece to be tested 200. Through the device in the present application, the testing problem of large transparent parts is effectively solved. By driving the test device with a driving device to perform fixed-point detection on the workpiece to be tested 200, the detection of the workpiece to be tested 200 is facilitated, and the testing efficiency of large transparent parts is improved.

[0039] Embodiment Two

[0040] This embodiment is a further refinement of Embodiment One. As Figure 1 shown, the horizontal driving device includes a first driving motor 600, a first transmission lead screw 700, a first mounting seat 800, and a first bracket 118. The first driving motor 600 is fixedly installed on the first mounting seat 800. One end of the first transmission lead screw 700 passes through the first mounting seat 800 and is connected to the first driving motor 600. The other end of the first transmission lead screw 700 is connected to the first bracket 118 arranged on the side of the test bench body 100. The horizontal driving device further includes a connecting plate 900. The first mounting seat 800 is connected to the connecting plate 900, and both ends of the connecting plate 900 are respectively connected to two sets of horizontal driving devices. The horizontal driving device further includes a first guide rail 110. Both ends of the first guide rail 110 are respectively arranged on the first mounting seat 800 and the first bracket 118.

[0041] The first driving motor 600 drives the first transmission lead screw 700 to rotate, so that the test device installed on the first transmission lead screw 700 moves horizontally, thereby detecting the workpiece to be tested 200.

[0042] Two sets of horizontal driving devices are respectively arranged on the upper and lower sides of the test bench body 100. The two sets of horizontal driving devices respectively drive the first test device 300 and the second test device 400. And the two sets of horizontal driving devices are connected by the connecting plate 900 to enable the two sets of horizontal driving devices to move longitudinally simultaneously, so that the first test device 300 and the second test device 400 can remain relatively stationary, thereby accurately measuring the workpiece to be tested 200.

[0043] As Figure 2As shown in the figure, the mounting block 500 includes a first side plate 501 and a second side plate 502. The first side plate 501 and the second side plate 502 form a U-shaped structure, and connection holes 503 are provided on the side walls of the first side plate 501 and the second side plate 502. The connection holes 503 are used to mount the testing device; a first mounting hole is also provided on the first side plate 501, and a second mounting hole is also provided on the second side plate 502; a third side plate 504 is further provided below the mounting block 500, and a distance sensor 505 is mounted on the third side plate 504.

[0044] The mounting block 500 is respectively connected to the testing device through the connection holes 503. The mounting block 500 is then mounted on the first transmission lead screw 700, and the testing device is driven to move by the first transmission lead screw 700.

[0045] The mounting block 500 includes a first side plate 501 and a second side plate 502. A first mounting hole is provided on the first side plate 501, and a second mounting hole is provided on the second side plate 502. Two first guide rails 110 are respectively mounted in the first mounting hole and the second mounting hole.

[0046] The longitudinal driving device includes a second driving motor 111, a second transmission lead screw 112, a second mounting seat 113, a second support 114 and a fixed support 115; the second mounting seat 113 is provided on the second support 114, the second driving motor 111 is fixedly provided on the second mounting seat 113, and one end of the second transmission lead screw 112 passes through the second mounting seat 113 and is connected to the second motor; the other end of the second transmission lead screw 112 passes through the connecting plate 900 and is connected to the fixed support 115; the longitudinal driving device further includes a second guide rail 116, and both ends of the second guide rail 116 are respectively provided on the second support 114 and the fixed support 115.

[0047] Further, by providing the second guide rail 116, when the second transmission lead screw 112 drives the connecting plate 900 to move, the transmission is made more stable and the connecting plate 900 is prevented from rotating.

[0048] Further, the second guide rail 116 is provided through the connecting plate 900.

[0049] Further, the second transmission lead screw 112 is slidably connected to the connecting plate 900, and the second driving motor 111 drives the second transmission lead screw 112 to rotate. The connecting plate 900 is driven to move by the second transmission lead screw 112, thereby driving the first testing device 300 and the second testing device 400 to move longitudinally.

[0050] Further, limit switches 117 are also provided at both ends of the first transmission lead screw 700 and the second transmission lead screw 112. The moving distances of the first testing device 300 and the second testing device 400 are limited by the limit switches 117.

[0051] Specifically, when the first test device 300 and the second test device 400 move laterally on the first transmission lead screw 700, the distance sensor 505 is set to control the moving distance of the first test device 300 and the second test device 400 (the moving distance is 5 mm), and limit switches 117 are arranged at the ends of the first transmission lead screw 700 and the second transmission lead screw 112 to define the moving positions of the first test device 300 and the second test device 400.

[0052] Furthermore, both the distance sensor 505 and the limit switch 117 adopt existing devices, which will not be elaborated here.

[0053] Furthermore, in this application, both the first test device 300 and the second test device 400 adopt existing devices. For example, the first test device 300 adopts a ZWJ-851 collimator telescope; the second test device 400 adopts a collimating mirror corresponding to the ZWJ-851 collimator telescope.

[0054] The working principle of the present invention is as follows: During use, the first drive motor 600 is set to drive the first transmission lead screw 700 to rotate, driving the first test device 300 and the second test device 400 to move, so as to perform lateral detection on the workpiece 200 to be tested; when the mounting block 500 hits the limit switch 117 at the end of the first transmission lead screw 700, the first drive motor 600 stops rotating; the second drive motor 111 starts and drives the second transmission lead screw 112 to rotate, causing the first test device 300 and the second test device 400 to move longitudinally by a certain distance, and then detecting the workpiece 200 to be tested. Through multiple cycles, the detection of the workpiece 200 to be tested is completed.

[0055] Embodiment III

[0056] This embodiment is a further refinement of Embodiment II. A method for automatically testing the angular deviation of a large transparent part includes the following steps:

[0057] Step S1: Place the workpiece 200 to be tested in the installation groove of the test bench body 100;

[0058] Step S2: Drive the test device to the edge of the test bench body 100 through the longitudinal drive device, and then drive the test device to one side of the workpiece 200 to be tested through the lateral drive device, and adjust the position of the test device to align the test device with the workpiece 200 to be tested, and determine the initial test point;

[0059] Step S3: Perform point-by-point detection on the workpiece 200 to be tested through the test device, with each detection point spaced 5 mm apart, and drive the test device to move laterally according to a fixed displacement of 5 mm through the lateral drive device until the other side of the workpiece 200 to be tested, and the first row of test points of the workpiece 200 to be tested ends;

[0060] Step S4: Drive the testing device to move longitudinally by 5 mm through the longitudinal driving device, and then drive the testing device to move in the opposite direction to the end of the first row of test points of the workpiece 200 to be tested through the transverse driving device, and continuously detect the second row of test points of the workpiece 200 to be tested until the end of the second row of test points, and so on;

[0061] Step S5: Repeat steps S3 and S4 until the detection of the workpiece 200 to be tested is completed;

[0062] Step S6: Judge whether the workpiece 200 to be tested is qualified according to the detected angular deviation value.

[0063] The specific method for judging whether the workpiece 200 to be tested is qualified is as follows: First, judge whether the detected angular deviation value is within the angular deviation range (0 - 6′) according to the angular deviation value obtained from the detection points. If it is within the range, it is qualified; if not, it means that the test point is unqualified.

[0064] After all the detection points are judged, according to the ratio of the qualified detection points to the unqualified detection points judged by the detection points, if the ratio of the unqualified detection points is less than 7%, it means that the workpiece 200 to be tested is qualified; if the ratio of the unqualified detection points is greater than 7%, it means that the workpiece 200 to be tested is unqualified. For example, if 1000 detection points are measured on the workpiece 200 to be tested, and among them, 60 detection points are unqualified, it means that the workpiece 200 to be tested is a qualified product.

[0065] Embodiment 4

[0066] The inventive concept of the present invention is as follows: The test bench body 100 in the present invention is an automatic test bench for the angular deviation of transparent parts, mainly including a driving device, a testing device, displacement detection and limit protection. During operation, the workpiece 200 (transparent part) to be tested is placed on the test bench body 100 and remains stationary. The measurement and control system controls two first driving motors 600 that move left and right to work synchronously. The first driving motors 600 drive two first transmission lead screws 700 to rotate simultaneously, so that the mounting blocks 500 mounted on the first transmission lead screws 700 move. The first testing device 300 and the second testing device 400 are respectively mounted on the two mounting blocks 500, which ensures the synchronous movement of the testing device in the left - right direction, and thus realizes the continuous detection of the workpiece 200 to be tested in the transverse direction.

[0067] After the point detection on the horizontal direction of the workpiece 200 to be measured is completed, the measurement and control system controls the two second driving motors 111 that move back and forth to work synchronously. The two second driving motors 111 drive the two second transmission lead screws 112 to rotate simultaneously, so that the connecting plate 900 installed on the second transmission lead screws 112 moves back and forth, thus realizing the movement of the testing device in the front-back direction. After the longitudinal movement is in place, the measurement and control system performs the left-right movement control detection. By repeating such movements, the continuous detection of the entire workpiece 200 to be measured can be achieved. During the movement process, the displacement sensor can be used to detect the moving distance. At the same time, the limit switches 117 designed in the front, back, left, and right directions can protect against over-limit movement and automatically stop moving when reaching the limit position.

[0068] The detection value of each test point on the workpiece 200 to be measured is transmitted back to the computer containing the measurement and control system through the network, and the angular deviation value is calculated and displayed by the computer. The calculation process is as follows:

[0069] S1, as Figure 5 shown, the reticle coordinate (a) of the first testing device 300 coincides with the scale plate coordinate (b) of the second testing device 400;

[0070] S2, after passing through the workpiece 200 to be measured, the angular deviation components of the reticle coordinate 01 from the scale plate coordinate 0 on the X and Y axes;

[0071] S3. Calculate the angular deviation value through the following formula;

[0072]

[0073] Among them, E i is the absolute value of the angular deviation vector (i is the incident angle);

[0074] E ix is the angular deviation component of the reticle O1 on the x-axis of the scale plate;

[0075] E iy is the angular deviation component of the reticle O1 on the y-axis of the scale plate.

[0076] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0077] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic test bench for angular deviation of large transparent parts, characterized in that: It includes a test bench body (100). An installation groove is provided in the middle of the test bench body (100), and a workpiece to be tested (200) is installed inside the installation groove. A test device and a driving device are also provided on the test bench body (100). The test device includes a first test device (300), a second test device (400) and a mounting block (500). Among them, the first test device (300) and the second test device (400) are respectively arranged on the upper and lower sides of the workpiece to be tested (200). And the first test device (300) and the second test device (400) are respectively arranged on two mounting blocks (500). The driving device includes a transverse driving device and a longitudinal driving device. The first test device (300) and the second test device (400) are respectively arranged on two sets of transverse driving devices. The two sets of transverse driving devices are both connected to the longitudinal driving device, and the longitudinal driving device is arranged on both sides of the test bench body (100). The transverse driving device includes a first driving motor (600), a first transmission lead screw (700), a first mounting seat (800) and a first bracket (118). The first driving motor (600) is fixedly installed on the first mounting seat (800). One end of the first transmission lead screw (700) passes through the first mounting seat (800) and is connected to the first driving motor (600). The other end of the first transmission lead screw (700) is connected to the first bracket (118) arranged on the side of the test bench body (100). The transverse driving device further includes a connecting plate (900). The first mounting seat (800) is connected to the connecting plate (900), and both ends of the connecting plate (900) are respectively connected to two sets of transverse driving devices. The longitudinal driving device includes a second driving motor (111), a second transmission lead screw (112), a second mounting seat (113), a second bracket (114) and a fixed bracket (115). The second mounting seat (113) is arranged on the second bracket (114). The second driving motor (111) is fixedly arranged on the second mounting seat (113). One end of the second transmission lead screw (112) passes through the second mounting seat (113) and is connected to the second motor. The other end of the second transmission lead screw (112) passes through the connecting plate (900) and is connected to the fixed bracket (115).

2. The automatic test bench for angular deviation of large transparent parts according to claim 1, characterized in that: The transverse driving device further includes a first guide rail (110). Both ends of the first guide rail (110) are respectively arranged on the first mounting seat (800) and the first bracket (118).

3. The automatic test bench for angular deviation of large transparent parts according to claim 2, wherein: The longitudinal driving device further includes a second guide rail (116). Both ends of the second guide rail (116) are respectively arranged on the second bracket (114) and the fixed bracket (115).

4. A large transparent part angular deviation automatic test bench according to claim 1, characterized in that: The mounting block (500) includes a first side plate (501) and a second side plate (502). The first side plate (501) and the second side plate (502) form a U-shaped structure.

5. An automatic test bench for angular deviation of large transparent parts according to claim 4, characterized in that: Connection holes (503) are provided on the side walls of the first side plate (501) and the second side plate (502). The connection holes (503) are used for installing the test device.

6. The automatic test bench for angular deviation of large transparent parts according to claim 4, characterized in that: A third side plate (504) is further provided below the mounting block (500), and a distance sensor (505) is installed on the third side plate (504).

7. An automatic testing method for the angular deviation of a large transparent part, characterized in that: For the angular deviation automatic test bench according to any one of claims 1 to 6, the test method comprises the following steps: Step S1: Place the workpiece (200) to be tested in the installation groove of the test bench body (100); Step S2: Drive the test device to the edge of the test bench body (100) through the longitudinal driving device, and then drive the test device to one side of the workpiece (200) to be tested through the transverse driving device, and adjust the position of the test device to align the test device with the workpiece (200) to be tested, and determine the initial test point; Step S3: Detect the workpiece (200) to be tested point by point through the test device, with a distance of 5 mm between each detection point, and drive the test device to move transversely by a fixed displacement of 5 mm through the transverse driving device until the other side of the workpiece (200) to be tested, and the first row of test points of the workpiece (200) to be tested ends; Step S4: Drive the test device to move longitudinally by 5 mm through the longitudinal driving device, and then drive the test device to move in the opposite direction to the end of the first row of test points of the workpiece (200) to be tested through the transverse driving device, and continuously detect the second row of test points of the workpiece (200) to be tested until the second row of test points ends; Step S5: Repeat steps S3 and S4 until the detection of the workpiece (200) to be tested is completed; Step S6: Judge whether the workpiece (200) to be tested is qualified according to the detected angular deviation value.

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