Plane center calibration device and plane center calibration system
By using a plane center calibration device and system in the test equipment, and using a camera to take the crosshairs of the test equipment, the problem of difficult to judge the debugging accuracy is solved, high-precision calibration is achieved, and the testing error of the module product is reduced.
Patent Information
- Application Number
- CN202421384434.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the prior art, the debugging accuracy cannot be accurately judged when debugging the test equipment, resulting in large test errors of module products.
Provide a planar center calibration device and system to capture the cross-line of the test panel or test fixture through a camera, calibrate the center position of the test equipment, and improve the accuracy of calibration.
The high accuracy of images captured by the camera improves the accuracy of debugging and calibration testing equipment, reduces the test error of module products, and achieves multi-plane central calibration.
Smart Images
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Abstract
Description
Technical Field
[0001] The present application relates to the field of module manufacturing technology, and in particular to a plane center calibration device and a plane center calibration system. Background Art
[0002] After the module is assembled, it is necessary to perform functional tests on the module according to customer requirements. Because the module itself is a high-tech product with high optical precision, the requirements for test accuracy are very high. In order to reduce the error of the test equipment in testing the module, calibration of the test equipment has become an indispensable task. The purpose of debugging the test equipment is to ensure that the test equipment arrives at the same spatial location environment at each test station, so as to reduce the test error of the module product to a minimum.
[0003] In the prior art, the position of the test equipment is calibrated by simply using a displacement platform and a cross laser to adjust, and then the position of the test equipment is observed by the naked eye to see if it is correct. This debugging and calibration method has the following disadvantages: Due to differences in human vision, there will be differences in whether the center of the cross laser is aligned with the center of the cross line of the test equipment. In addition, the thickness of the cross laser is generally 1mm-2mm, which also causes errors when the human eye observes the cross laser. In the process of debugging the test equipment, it is impossible to judge whether the debugging accuracy is correct, resulting in large test errors for module products. Utility Model Content
[0004] The present application provides a plane center calibration device and system to solve the technical problem that in the process of debugging and testing the existing equipment, it is impossible to determine whether the debugging accuracy is correct, resulting in large testing errors of module products.
[0005] In a first aspect, an embodiment of the present application provides a plane center calibration device, which is located between a test plate and a test fixture, and the plane center calibration device includes: a base, having a positioning plane, on which a through hole is provided; a support member, which is arranged on the positioning plane of the base; a movable member, which is arranged on the support member; and a camera, which is arranged on the movable member, with the shooting end of the camera facing the test plate or the test fixture, for shooting the crosshairs of the test plate or the test fixture; wherein the center of the crosshairs of the test plate or the test fixture shot by the camera coincides with the center of the crosshairs of the camera itself, so as to calibrate the center position of the test plate or the test fixture.
[0006] In a possible implementation, the support member includes a support tube and a fixed ring, and the support tube or the fixed ring is detachably connected to the positioning plane of the base; the support tube has a first end face and a second end face that are relatively arranged, the fixed ring is arranged on the first end face of the support tube, and the fixed ring and the support tube are coaxially arranged, and the movable member is movably arranged on the inner circumference side of the support tube.
[0007] In one possible implementation, a first end face of the support tube is provided with a plurality of first connecting holes, a side of the fixing ring facing the support tube is provided with a plurality of second connecting holes corresponding one-to-one to the first connecting holes, a side of the fixing ring facing away from the support tube is provided with a plurality of first grooves corresponding one-to-one to the second connecting holes, and the support tube and the fixing ring are connected by a first fastener.
[0008] In one possible implementation, a first boss is provided on the side of the fixing ring away from the supporting tube, and a first slot is provided on the positioning plane of the base to be clipped and connected to the first boss; or a second slot is provided on the side of the fixing ring away from the supporting tube, and a second boss is provided on the positioning plane of the base to be clipped and connected to the second slot.
[0009] In a possible implementation, the second end surface of the support tube is provided with a third protrusion that is clip-connected to the first clip groove; or the second end surface of the support tube is provided with a third clip groove that is clip-connected to the second protrusion.
[0010] In one possible implementation, the moving part includes a sliding ring, which is coaxially arranged with the supporting tube and slidably connected therebetween, and the center of the sliding ring coincides with the optical center of the camera; a positioning plate is provided on the sliding ring, and a slideway is provided on the peripheral side of the supporting tube along the axial direction of the supporting tube, and the positioning plate and the slideway are connected by a second fastener.
[0011] In a possible implementation, a plurality of positioning plates are provided, and the plurality of positioning plates are evenly distributed in a ring shape around the sliding ring; a plurality of positioning plates are provided in a one-to-one correspondence with the slideways, and the plurality of slideways are evenly distributed in a ring shape around the supporting tube; a fixing hole is provided on any one of the positioning plates, and one end of the second fastener passes through the slideway and is fixedly connected to the fixing hole of the positioning plate.
[0012] In a possible implementation, the moving part also includes a fixed plate, a first connecting plate and a second connecting plate, the fixed plate is arranged on the first connecting plate, and is used to fix the camera; the first connecting plate and the second connecting plate are arranged opposite to each other, and both are arranged on the same side of the sliding ring, a first positioning groove is arranged on the side of the first connecting plate facing the second connecting plate, and a second positioning groove is arranged on the side of the second connecting plate facing the first connecting plate, and the first positioning groove and the second positioning groove are combined to form a circular positioning groove, which is used to limit the movement of the camera in the horizontal direction.
[0013] In a second aspect, the present application provides a plane center calibration system, including: a test board; a test fixture, arranged opposite to the test board; and the plane center calibration device as described above.
[0014] In one possible implementation, the test plate has a first test plane on one side facing the camera of the plane center calibration device, and a first crosshair is set on the first test plane; the test fixture has a second test plane on one side facing the camera of the plane center calibration device, and a second crosshair is set on the second test plane.
[0015] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:
[0016] A plane center calibration device and system provided by an embodiment of the present application, when the test equipment needs to be calibrated, the base, the test plate and the test fixture are respectively installed on the test equipment. Before calibration, the parallelism between the positioning plane of the test plate and the base or the parallelism between the positioning plane of the test fixture and the base must be within 0.005mm. First, the shooting end of the camera is directed toward the test plate and installed on the moving part, and the support is installed on the positioning plane of the base. By adjusting the position of the moving part on the support, the focusing range of the camera can be roughly adjusted, and the image taken by the camera on the external display device is observed at the same time. The image software will simultaneously display the crosshairs of the test plate and the crosshairs of the camera itself. When the clarity of the image taken by the camera reaches the preset clarity, the relative position of the moving part and the support is fixed. When there is a deviation between the crosshair center of the test plate and the crosshair center of the camera, the XYR axis displacement platform used to fix the test plate can be adjusted until the crosshair center of the test plate is consistent with the crosshair center of the camera, and the calibration of the test plate is completed at this time. Then, the support is turned around and installed on the positioning plane of the base so that the shooting end of the camera faces the test jig. The calibration process is the same as the test board. When there is a deviation between the crosshair center of the test jig and the crosshair center of the camera, the XYR axis displacement platform used to fix the test jig can be adjusted until the crosshair center of the test jig is consistent with the crosshair center of the camera. At this time, the calibration of the test jig is completed. After the calibration of the test board and the test jig is completed, the center alignment of the test board, the test jig and the base can reach within 0.01mm. By adopting this plane center calibration device, center calibration of multiple planes can be achieved. Compared with the prior art, the plane center calibration device of the present application can improve the accuracy of debugging and calibrating test equipment and reduce the test error of module products through the high precision of the camera shooting images. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0020] Figure 1 A schematic structural diagram of a plane center calibration device provided in one embodiment of the present application;
[0021] Figure 2 for Figure 1 A schematic diagram of the working state of the plane center calibration device shown;
[0022] Figure 3 for Figure 1 A schematic structural diagram of a support member of a plane center calibration device is shown;
[0023] Figure 4 for Figure 3 The structural exploded schematic diagram of the support member is shown;
[0024] Figure 5 for Figure 1 A schematic structural diagram of a base of a plane center calibration device is shown;
[0025] Figure 6 for Figure 1 A top view of the plane center calibration device is shown;
[0026] Figure 7 A schematic structural diagram of a plane center calibration device provided in another embodiment of the present application;
[0027] Figure 8 for Figure 7 An exploded schematic diagram of the structure of the moving part of the plane center calibration device is shown;
[0028] Fig. 9 for Figure 8 A top view of the sliding ring of the moving member is shown;
[0029] Fig.10 A schematic diagram of the structure of a plane center calibration system provided in an embodiment of the present application;
[0030] Fig.11 for Fig.10A perspective view of a plane center calibration system is shown;
[0031] Fig.12 for Fig.11 Enlarged schematic diagram of part A in the middle.
[0032] Description of reference numerals:
[0033] 1. Plane center calibration device; 11. Base; 111. Positioning plane; 112. Through hole; 113. First card slot; 114. Second groove; 12. Support member; 121. Support cylinder; 1211. First end face; 1212. Second end face; 1213. First connecting hole; 1214. Third convex column; 1215. Slideway; 1216. Second fastener; 122. Fixing ring; 1221. Second connecting hole; 1222. First convex column; 1223. Third groove; 1224. First groove; 13. Moving member; 131. Sliding ring; 1311. Positioning plate; 1312. Fixing hole; 132. Fixing plate; 133. First connecting plate; 1331. First positioning groove; 134. Second connecting plate; 1341. Second positioning groove; 14. Camera;
[0034] 2. Plane center calibration system; 21. Test drawing board; 211. First test plane; 2111. First crosshair; 22. Test fixture; 221. Second test plane; 2211. Second crosshair. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0036] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0037] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.
[0038] In the prior art, the position of the test equipment is calibrated by simply using a displacement platform and a cross laser to adjust, and then the position of the test equipment is observed by the naked eye to see if it is correct. The specific process of calibration and debugging is as follows: install a test board and a test fixture on the test equipment, place a cross laser device between the test board and the test fixture, so that the cross laser device emits a cross laser, and then observe with the naked eye whether the center of the cross laser is aligned with the center of the cross line on the test board, or observe with the naked eye whether the center of the cross laser is aligned with the center of the cross line on the test fixture, so as to adjust the XYR axis displacement platform used to fix the test board or the test fixture respectively until the cross line centers of the three are aligned. This debugging and calibration method has the following disadvantages: due to differences in human vision, there will be differences in the naked eye to judge whether the center of the cross laser is aligned with the center of the cross line of the test equipment, and the line thickness of the cross laser is generally 1mm-2mm, which also causes errors when the human eye observes the cross laser. In the process of debugging the test equipment, it is impossible to judge whether the debugging accuracy is correct, resulting in a large test error of the module product.
[0039] In order to solve the technical problem that during the debugging and testing process of existing equipment, it is impossible to determine whether the debugging accuracy is correct, resulting in large test errors of module products, the present application provides a plane center calibration device and system, which can realize multi-plane center calibration, improve the accuracy of debugging and calibration test equipment, and reduce the test errors of module products.
[0040] Figure 1 and Figure 2A plane center calibration device 1 is provided in an embodiment of the present application. The plane center calibration device 1 is arranged on a test device and is located between a test plate 21 and a test fixture 22. The plane center calibration device 1 includes a base 11, a support member 12, a movable member 13 and a camera 14. The base 11 has a positioning plane 111, and a through hole 112 is arranged on the positioning plane 111; the support member 12 is arranged on the positioning plane 111 of the base 11; the movable member 13 is arranged on the support member 12; the camera 14 is arranged on the movable member 13, and the shooting end of the camera 14 faces the test plate 21 or the test fixture 22, and is used to shoot the crosshairs of the test plate 21 or the test fixture 22; wherein the center of the crosshairs of the test plate 21 or the test fixture 22 shot by the camera 14 coincides with the center of the crosshairs of the camera 14 itself, so as to calibrate the center position of the test plate 21 or the test fixture 22.
[0041] It should be noted that a through hole 112 is provided on the positioning plane 111 to avoid affecting the normal shooting of the camera 14. The shape of the through hole 112 can be set to a circular, square, oval or other shapes, which are not limited here. The camera can adopt the existing model MV-CA050-10GM area array industrial camera with a high resolution of 2448px×2048px. The camera 14 has a data transmission interface, and the data transmission interface of the camera 14 and an external display device (such as a computer) can be connected through a data transmission line, etc. The image data taken by the camera 14 (the image taken is accurate to within 0.01mm) can be transmitted to the external display device and processed by the image software of the external display device. The specific working principle can refer to the existing technology and will not be repeated here. The test equipment can adopt the existing module automatic function test machine, and the specific working principle can refer to the existing technology. The X-axis, Y-axis, and R-axis in the XYR-axis displacement platform are shown in the figure. By installing the test plate 21 or the test fixture 22 on the corresponding XYR-axis displacement platform, the rotation of the test plate 21 or the test fixture 22 around the R-axis can be limited, and the displacement of the test plate 21 or the test fixture 22 in the X-axis or Y-axis direction can be adjusted. The purpose of this application is to measure the center accuracy of the test plate 21 and the test fixture 22. In the plane center calibration system, the test plate 21 has an independent XYR-axis displacement platform, and the test fixture 22 also has an independent XYR-axis displacement platform. At the same time, the XYR-axis displacement platform is a standard part, and its accuracy and use method refer to the prior art, which will not be repeated here.
[0042] It is understandable that when the test equipment needs to be calibrated, the base 11, the test plate 21 and the test fixture 22 are respectively installed on the test equipment (not shown in the figure). Before calibration, the parallelism between the test plate 21 and the positioning plane 111 of the base 11 or the parallelism between the test fixture 22 and the positioning plane 111 of the base 11 must reach within 0.005mm. First, the shooting end of the camera 14 is directed toward the test plate 21 and installed on the movable member 13, and the support member 12 is installed on the positioning plane 111 of the base 11. By adjusting the position of the movable member 13 on the support member 12, the focusing range of the camera 14 can be roughly adjusted, and the image captured by the camera 14 on the external display device is observed at the same time. The image software will simultaneously display the crosshairs of the test plate 21 and the crosshairs of the camera 14 itself. When the clarity of the image captured by the camera 14 reaches the preset clarity, the relative position of the movable member 13 and the support member 12 is fixed. When there is a deviation between the crosshair center of the test plate 21 and the crosshair center of the camera 14, the XYR axis displacement platform used to fix the test plate 21 can be adjusted until the crosshair center of the test plate 21 is consistent with the crosshair center of the camera 14, and the calibration of the test plate 21 is completed. Then the support 12 is turned around and installed on the positioning plane 111 of the base 11, so that the shooting end of the camera 14 faces the test fixture 22. The calibration process is the same as the test plate 21. When there is a deviation between the crosshair center of the test fixture 22 and the crosshair center of the camera 14, the XYR axis displacement platform used to fix the test fixture 22 can be adjusted until the crosshair center of the test fixture 22 is consistent with the crosshair center of the camera 14, and the calibration of the test fixture 22 is completed. After the calibration of the test plate 21 and the test fixture 22 is completed, the center alignment of the test plate 21, the test fixture 22 and the base 11 can reach within 0.01mm. By adopting the plane center calibration device 1, center calibration of multiple planes can be achieved. Compared with the prior art, the plane center calibration device 1 of the present application can improve the accuracy of debugging and calibrating test equipment and reduce the test error of module products through the high precision of the image captured by the camera 14.
[0043] In some embodiments, Figure 3 and Figure 4As shown, the support member 12 includes a support tube 121 and a fixed ring 122, and the support tube 121 or the fixed ring 122 is detachably connected to the positioning plane 111 of the base 11. Preferably, the axis of the support tube 121 or the fixed ring 122 can be set to pass through the center of the through hole 112 of the base 11; the support tube 121 has a first end face 1211 and a second end face 1212 arranged opposite to each other, the fixed ring 122 is arranged on the first end face 1211 of the support tube 121, and the fixed ring 122 and the support tube 121 are coaxially arranged, and the moving member 13 is movably arranged on the inner peripheral side of the support tube 121. Generally speaking, the initial photographing focal length of the camera 14 is within 110mm-130mm. The fixed ring 122 and the support tube 121 are coaxially arranged to ensure that the optical center of the camera 14 coincides with the center of the support tube 121, and the focusing range of the camera 14 is expanded by adjusting the position of the moving member 13 relative to the support tube 121.
[0044] like Figure 4 As shown, the first end surface 1211 of the support tube 121 is provided with a plurality of first connection holes 1213, the side of the fixing ring 122 facing the support tube 121 is provided with a plurality of second connection holes 1221 corresponding to the first connection holes 1213, and the side of the fixing ring 122 away from the support tube 121 is provided with a plurality of first grooves 1224 corresponding to the second connection holes 1221, and the support tube 121 and the fixing ring 122 are connected by a first fastener, and the first groove 1224 is provided to reserve sufficient operating space for installing the first fastener. The first fastener can be a screw, and the threaded end of the first fastener passes through the second connection hole 1221 of the fixing ring 122 and is threadedly connected to the first connection hole 1213 of the support tube 121, so as to fix the fixing ring 122 to the support tube 121, ensure the coaxiality between the two, and further ensure the clarity of the test plate 21 or the test fixture 22 photographed by the camera 14.
[0045] In some embodiments, Figure 4 and Figure 5As shown, a first boss 1222 is provided on the side of the fixing ring 122 away from the support tube 121, and a first slot 113 is provided on the positioning plane 111 of the base 11 to be snap-connected with the first boss 1222; or a second slot is provided on the side of the fixing ring 122 away from the support tube 121, and a second boss is provided on the positioning plane 111 of the base 11 to be snap-connected with the second slot. The connection between the fixing ring 122 and the positioning plane 111 of the base 11 can be achieved through the snap connection between the first boss 1222 and the first slot 113 or the snap connection between the second boss and the second slot, thereby ensuring that the fixing ring 122 is placed flat on the positioning plane 111 of the base 11 and cannot move, and through the processing accuracy of the first boss 1222 or the second boss, the accuracy of the alignment of the optical center of the camera 14 with the center of the positioning plane 111 of the base 11 is ensured.
[0046] In order to facilitate user observation, the base 11 is provided with a second groove 114, and the fixing ring 122 and the support tube 121 are provided with a third groove 1223 corresponding to the second groove 114. Preferably, the orthographic projection of the second groove 114 and the third groove 1223 on the horizontal plane (XY plane) is in the shape of a "cross". When the first protrusion 1222 is connected to the first card groove 113 by a snap connection or the second protrusion is connected to the second card groove by a snap connection, it can be seen that the second groove 114 of the base 11 is aligned with the fixing ring 122 or the third groove 1223 on the support tube 121, as shown in FIG. Figure 6 shown.
[0047] Optionally, in order to improve the positioning accuracy between the fixing ring 122 and the base 11, a plurality of first bosses 1222 are provided, and a plurality of first slots 113 are provided one-to-one corresponding to the first bosses 1222. In the embodiment of the present application, two first bosses 1222 are provided, and the two first bosses 1222 are symmetrically arranged relative to the center of the fixing ring 122.
[0048] like Figure 3 As shown, the second end surface 1212 of the support tube 121 is provided with a third boss 1214 that is snap-connected with the first slot 113. In this embodiment, two third bosses 1214 are symmetrically provided; or the second end surface 1212 of the support tube 121 is provided with a third slot that is snap-connected with the second boss. The connection between the support tube 121 and the positioning plane 111 of the base 11 can be achieved through the snap connection between the third boss 1214 and the first slot 113 or the snap connection between the second boss and the third slot, so as to ensure that the support tube 121 is placed flat on the positioning plane 111 of the base 11 and cannot move, and through the processing accuracy of the second boss or the third boss 1214, the accuracy of the alignment between the optical center of the camera 14 and the center of the positioning plane 111 of the base 11 is ensured.
[0049] In some embodiments, Figure 7 As shown, the moving member 13 includes a sliding ring 131, which is coaxially arranged with the support tube 121 and slidably connected therebetween, and the center of the sliding ring 131 coincides with the optical center of the camera 14; a positioning plate 1311 is arranged on the sliding ring 131, and a slideway 1215 is arranged on the peripheral side of the support tube 121 along the axial direction of the support tube 121, and the positioning plate 1311 and the slideway 1215 are connected by a second fastener 1216. By adjusting the position of the positioning plate 1311 relative to the slideway 1215, the sliding ring 131 slides relative to the moving member 13, thereby achieving a coarse adjustment of the focus range of the camera 14 and expanding the focus range of the camera 14. When the clarity of the image captured by the camera 14 reaches a preset clarity, the positioning plate 1311 is fixedly connected to the slideway 1215 by the second fastener 1216 (screws can be used).
[0050] like Figure 8 and Fig. 9 As shown, there are multiple positioning plates 1311, and the multiple positioning plates 1311 are evenly distributed in a ring shape around the sliding ring 131; there are multiple slideways 1215 corresponding to each other, and the multiple slideways 1215 are evenly distributed in a ring shape around the supporting tube 121; any one of the positioning plates 1311 is provided with a fixing hole 1312, and one end of the second fastener passes through the slideway 1215 and is fixedly connected to the fixing hole 1312 of the positioning plate 1311. Through the above arrangement, the coaxiality between the sliding ring 131 and the supporting tube 121 can be ensured. In an optional embodiment, there are four positioning plates 1311, of which two symmetrically arranged positioning plates 1311 are provided with fixing holes 1312.
[0051] In some embodiments, Figure 8 As shown, the movable member 13 also includes a fixed plate 132, a first connecting plate 133 and a second connecting plate 134. The fixed plate 132 is arranged on the first connecting plate 133 for fixing the camera 14. The fixed plate 132 is "L"-shaped, one end of the fixed plate 132 is fixedly connected to the first connecting plate 133, and the other end is fixedly connected to the camera 14; the first connecting plate 133 and the second connecting plate 134 are arranged opposite to each other, and both are arranged on the same side of the sliding ring 131, a first positioning groove 1331 is arranged on the side of the first connecting plate 133 facing the second connecting plate 134, and a second positioning groove 1341 is arranged on the side of the second connecting plate 134 facing the first connecting plate 133, the first positioning groove 1331 and the second positioning groove 1341 are both semicircular, and the first positioning groove 1331 and the second positioning groove 1341 are combined to form a circular positioning groove, which is used to limit the movement of the camera 14 in the horizontal direction and realize the positioning of the camera 14 in the horizontal direction.
[0052] like Fig.10As shown, the embodiment of the present application provides a plane center calibration system 2, including a test plate 21, a test fixture 22, and the plane center calibration device 1 as described above, wherein the test plate 21 is arranged on the test equipment; the test fixture 22 is arranged on the test equipment and is arranged opposite to the test plate 21. By adopting the plane center calibration device 1, the center calibration of the test plate 21 and the test fixture 22 can be realized in sequence. Compared with the prior art, the plane center calibration device 1 of the present application can improve the accuracy of debugging and calibrating the test equipment through the high precision of the image captured by the camera 14, and reduce the test error of the module product.
[0053] In some embodiments, Figures 10 to 12 As shown, the test plate 21 has a first test plane 211 on the side facing the camera 14 of the plane center calibration device 1, and a first cross line 2111 is set on the first test plane 211; the test fixture 22 has a second test plane 221 on the side facing the camera 14 of the plane center calibration device 1, and a second cross line 2211 is set on the second test plane 221.
[0054] When there is a deviation between the center of the first crosshairs 2111 of the test plate 21 and the center of the crosshairs of the camera 14, the XYR axis displacement platform used to fix the test plate 21 can be adjusted until the center of the first crosshairs 2111 of the test plate 21 is consistent with the center of the crosshairs of the camera 14, and the calibration of the test plate 21 is completed; then the support member 12 is turned around and installed on the positioning plane 111 of the base 11, so that the shooting end of the camera 14 faces the test fixture 22, and the calibration process is the same as the test plate 21, until the center of the second crosshairs 2211 of the test fixture 22 is consistent with the center of the crosshairs of the camera 14, and the calibration of the test fixture 22 is completed, thereby respectively realizing the center calibration of the first test plane 211 of the test plate 21 and the second test plane 221 of the test fixture 22.
[0055] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0056] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0057] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A plane center calibration device, located between a test plate (21) and a test fixture (22), characterized in that: The plane center calibration device (1) comprises: A base (11) having a positioning plane (111), wherein a through hole (112) is provided on the positioning plane (111); A support member (12) disposed on the positioning plane (111) of the base (11); A moving member (13) is arranged on the supporting member (12); and A camera (14) is arranged on the moving part (13), the shooting end of the camera (14) faces the test plate (21) or the test fixture (22), and is used to shoot the crosshairs of the test plate (21) or the test fixture (22); The center of the crosshairs of the test plate (21) or the test fixture (22) photographed by the camera (14) coincides with the center of the crosshairs of the camera (14) itself, so as to calibrate the center position of the test plate (21) or the test fixture (22).
2. The plane center calibration device according to claim 1, characterized in that: The support member (12) comprises a support tube (121) and a fixing ring (122), and the support tube (121) or the fixing ring (122) is detachably connected to the positioning plane (111) of the base (11); The support tube (121) has a first end face (1211) and a second end face (1212) that are arranged opposite to each other, the fixing ring (122) is arranged on the first end face (1211) of the support tube (121), and the fixing ring (122) and the support tube (121) are arranged coaxially, and the moving member (13) is movably arranged on the inner circumference side of the support tube (121).
3. The plane center calibration device according to claim 2, characterized in that: The first end surface (1211) of the support tube (121) is provided with a plurality of first connecting holes (1213), the side of the fixing ring (122) facing the support tube (121) is provided with a plurality of second connecting holes (1221) corresponding one-to-one to the first connecting holes (1213), and the side of the fixing ring (122) facing away from the support tube (121) is provided with a plurality of first grooves (1224) corresponding one-to-one to the second connecting holes (1221).
4. The plane center calibration device according to claim 2, characterized in that: A first convex column (1222) is provided on a side of the fixing ring (122) facing away from the supporting tube (121), and a first clamping groove (113) clamped and connected to the first convex column (1222) is provided on the positioning plane (111) of the base (11); or A second slot is provided on a side of the fixing ring (122) facing away from the supporting tube (121), and a second protrusion connected to the second slot is provided on the positioning plane (111) of the base (11).
5. The plane center calibration device according to claim 4, characterized in that: The second end surface (1212) of the support tube (121) is provided with a third protruding column (1214) which is snap-connected to the first snap-in groove (113); or The second end surface (1212) of the support tube (121) is provided with a third clamping groove which is clamped to the second protruding column.
6. The plane center calibration device according to claim 2, characterized in that: The moving member (13) comprises a sliding ring (131), the sliding ring (131) and the supporting tube (121) are coaxially arranged and slidably connected with each other, and the center of the sliding ring (131) coincides with the optical center of the camera (14); A positioning plate (1311) is provided on the sliding ring (131), and a slideway (1215) is provided on the peripheral side of the support tube (121) along the axial direction of the support tube (121), and the positioning plate (1311) and the slideway (1215) are connected via a second fastener (1216).
7. The plane center calibration device according to claim 6, characterized in that: A plurality of the positioning plates (1311) are provided, and the plurality of positioning plates (1311) are evenly distributed in a ring shape around the circumference of the sliding ring (131); A plurality of slideways (1215) are provided corresponding to the positioning plates (1311) one by one, and the plurality of slideways (1215) are evenly distributed in a ring shape around the circumference of the support tube (121); Any one of the positioning plates (1311) is provided with a fixing hole (1312), and one end of the second fastener (1216) passes through the slideway (1215) and is fixedly connected to the fixing hole (1312) of the positioning plate (1311).
8. The plane center calibration device according to claim 6, characterized in that: The moving member (13) further comprises a fixing plate (132), a first connecting plate (133) and a second connecting plate (134); the fixing plate (132) is arranged on the first connecting plate (133) and is used to fix the camera (14); The first connecting plate (133) and the second connecting plate (134) are arranged opposite to each other and are arranged on the same side of the sliding ring (131); a first positioning groove (1331) is arranged on the side of the first connecting plate (133) facing the second connecting plate (134); a second positioning groove (1341) is arranged on the side of the second connecting plate (134) facing the first connecting plate (133); the first positioning groove (1331) and the second positioning groove (1341) are combined to form a circular positioning groove for limiting the movement of the camera (14) in the horizontal direction.
9. A plane center calibration system, characterized in that: include: Test board (21); A test fixture (22) is arranged opposite to the test drawing board (21); as well as A plane center calibration device (1) as claimed in any one of claims 1 to 8.
10. The plane center calibration system according to claim 9, characterized in that: The test plate (21) has a first test plane (211) on the side facing the camera (14) of the plane center calibration device (1), and a first crosshair (2111) is arranged on the first test plane (211); the test fixture (22) has a second test plane (221) on the side facing the camera (14) of the plane center calibration device (1), and a second crosshair (2211) is arranged on the second test plane (221).