Guide rail comprehensive precision detection device

Abstract

The utility model relates to the technical field of guide rail detection, in particular to a guide rail comprehensive precision detection device, which is characterized in that a standard sliding block is arranged in the middle of a detection platform, a guide rail to be detected is matched with the standard sliding block for sliding, first sliding rail groups are arranged on the detection platform at two ends of the standard sliding block, and mounting seats are arranged on the first sliding rail groups; a clamping mechanism is arranged on the mounting seat above the guide rail to be detected; measuring fixing plates are arranged on the two sides of the standard sliding block, a shaft seat is arranged on the measuring fixing plate close to one end of the standard sliding block, a rotating shaft is arranged on the shaft seat, a measuring rod is arranged on the rotating shaft, the measuring part abuts against a guide rail to be measured, a displacement sensor is arranged on the measuring fixing plate below the measuring part, and the measuring part is in contact with the displacement sensor. According to the guide rail comprehensive precision detection device provided by the utility model, the standard slide block is used for cooperatively connecting the to-be-detected guide rail, so that the to-be-detected guide rail is measured in the moving process, and the efficiency of measuring the to-be-detected guide rail is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of guide rail testing technology, and in particular to a comprehensive guide rail accuracy testing device. Background Technology

[0002] In existing technologies, the precision testing of guide rails requires locking the entire rail onto a grade 00 marble platform. Taking a 4-meter-long guide rail as an example, it typically requires 50-140 bolts for fixing, resulting in low testing efficiency. Furthermore, it places high demands on the testing platform, as the platform's precision significantly impacts the overall testing accuracy of the guide rail.

[0003] Therefore, there is an urgent need to design a measuring device that can efficiently detect guide rails. Utility Model Content

[0004] To address the aforementioned technical shortcomings, this invention provides a comprehensive guide rail accuracy testing device that enables precise measurement of guide rails and effectively improves measurement efficiency.

[0005] This utility model discloses a comprehensive accuracy testing device for guide rails, including a frame. A testing platform is formed on the top surface of the frame. A standard slider is disposed in the middle of the testing platform and is fixed upside down on the testing platform. The guide rail to be tested slides in cooperation with the standard slider. A first slide rail assembly is disposed on the testing platform at both ends of the standard slider. A mounting base is disposed on the first slide rail assembly, extending above the guide rail to be tested. A clamping mechanism is disposed on the mounting base above the guide rail to be tested, used to clamp the guide rail to be tested. A first power mechanism is disposed on the testing platform, driving the mounting base on the first slide rail assembly. The device reciprocates, with the mounting base moving in the same direction on the first slide rail assembly as the guide rail under test moving on the standard slider. Measuring fixing plates are provided on both sides of the standard slider. A shaft seat is provided on the measuring fixing plate near the standard slider end, and a rotating shaft is provided on the shaft seat. A measuring rod is provided on the rotating shaft. One end of the measuring rod extends to the middle of the standard slider above the guide rail under test and extends downward to form a measuring section, which abuts against the guide rail under test. The other end of the measuring rod extends to the other end of the measuring fixing plate and extends downward to form a measuring section. A displacement sensor is provided on the measuring fixing plate below the measuring section, and the measuring section contacts the displacement sensor.

[0006] A second slide rail assembly is provided on the detection platform below the measuring fixed plate. A bearing sliding plate is slidably connected to the second slide rail assembly. The measuring fixed plate is set on the bearing sliding plate. A second power mechanism is provided on the detection platform. The second power mechanism drives the bearing sliding plate to move on the second slide rail assembly. The sliding direction of the bearing sliding plate on the second slide rail assembly is perpendicular to the sliding direction of the guide rail to be tested on the standard slider.

[0007] Multiple guide rods are arrayed on the bearing sliding plate, and the guide rods are slidably connected to the bearing sliding plate. The measuring fixing plate is fixed to the upper end of the guide rods, and a lifting plate is fixed to the lower end of the guide rods. A threaded hole is fixed in the middle of the lifting plate. An mounting plate is fixed to the lower surface of the bearing sliding plate, and the mounting plate extends to the lower part of the lifting plate. A lifting motor is fixed to the mounting plate below the lifting plate. The output end of the lifting motor is provided with a vertically upward drive screw, and the drive screw is connected to the threaded hole on the lifting plate.

[0008] The clamping mechanism comprises a connecting plate fixed to a mounting base, a third slide rail assembly on the connecting plate, two clamping blocks slidably connected to the third slide rail assembly, opposing racks fixed to the two clamping blocks, a clamping motor on the connecting plate, a gear on the output shaft of the clamping motor meshing with the racks on the two clamping blocks, and the sliding direction of the clamping blocks on the third slide rail assembly being perpendicular to the sliding direction of the guide rail to be tested on the standard slider.

[0009] The first power mechanism includes a first motor mounted on a testing platform, a first lead screw mounted on the output shaft of the first motor, and a first nut fixedly mounted on a mounting base. The first nut is connected to the first lead screw, and the axial direction of the first lead screw is consistent with the length direction of the first slide rail assembly.

[0010] The second power mechanism includes a second motor mounted on the detection platform, a second lead screw mounted on the output shaft of the second motor, and a second nut fixedly mounted on the bearing sliding plate. The second nut is connected to the second lead screw, and the axial direction of the second lead screw is consistent with the length direction of the second slide rail assembly.

[0011] A through hole is provided on the measuring rod near the measuring part. A vertical adjusting screw is provided on the measuring fixing plate corresponding to the through hole. The adjusting screw passes through the through hole. Adjusting nuts are provided on the adjusting screws above and below the measuring rod. A compression spring is sleeved on the adjusting screw between the adjusting nut and the measuring rod.

[0012] Support bars are attached to the testing platforms at both ends of the standard slider, and the support bars are in contact with the lower surface of the slide rail to be tested.

[0013] The comprehensive accuracy testing device for guide rails obtained by this invention utilizes a standard slider to connect with the guide rail under test, enabling measurement during the movement of the guide rail under test, which greatly improves the efficiency of measuring the guide rail under test. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural view of the present invention;

[0016] Figure 3 This is a front view of the structure of the detection components on both sides of the standard slider of this utility model;

[0017] Figure 4 This is a top view of the detection components on both sides of the standard slider of this utility model;

[0018] Figure 5 This is a side view of the detection component on one side of the standard slider of this utility model;

[0019] Figure 6 This is a three-dimensional structural view of the detection component on one side of the standard slider of this utility model;

[0020] Figure 7 This is a front view of the structure of the clamping components at both ends of the standard slider of this utility model;

[0021] Figure 8 This is a three-dimensional structural view of the clamping components at both ends of the standard slider of this utility model;

[0022] Figure 9 This is a front view of the clamping mechanism of this utility model;

[0023] Figure 10 This is a bottom view of the clamping mechanism of this utility model;

[0024] Figure 11 This is a three-dimensional structural view of the clamping mechanism of this utility model;

[0025] Figure 12 This is a schematic diagram of the mating structure between the standard slider and the guide rail to be tested according to this utility model;

[0026] Figure 13 This is a schematic diagram showing the position of the measuring points on the guide rail to be tested according to this utility model. Detailed Implementation

[0027] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0028] Example 1:

[0029] like Figures 1-11As shown, this utility model discloses a comprehensive accuracy testing device for guide rails, including a frame. A testing platform 1 is formed on the top surface of the frame. A standard slider 2 is disposed in the middle of the testing platform 1 and is fixed upside down on the testing platform 1. The guide rail 3 to be tested slides in cooperation with the standard slider 2. A first slide rail group 4 is disposed on the testing platform 1 at both ends of the standard slider 2. A mounting seat 6 is disposed on the first slide rail group 4, extending above the guide rail 3 to be tested. A clamping mechanism 7 is disposed on the mounting seat 6 above the guide rail 3 to clamp the guide rail 3 to be tested. A first power mechanism 5 is disposed on the testing platform 1, driving the mounting seat 6 to reciprocate on the first slide rail group 4. The moving direction of the mounting base 6 on the first slide rail group 4 is consistent with the moving direction of the guide rail 3 to be tested on the standard slider 2. Measuring fixing plates 8 are provided on both sides of the standard slider 2. A bearing seat 15 is provided on the measuring fixing plate 8 near one end of the standard slider 2. A rotating shaft 16 is provided on the bearing seat 15. A measuring rod 9 is provided on the rotating shaft 16. One end of the measuring rod 9 extends to the middle part of the standard slider 2 above the guide rail 3 to be tested and extends downward to form a measuring part 12. The measuring part 12 abuts against the guide rail 3 to be tested. The other end of the measuring rod 9 extends to the other end of the measuring fixing plate 8 and extends downward to form a measuring part 13. A displacement sensor 14 is provided on the measuring fixing plate 8 below the measuring part 13. The measuring part 13 contacts the displacement sensor 14.

[0030] The frame serves as a carrier, and its specific shape is not limited. The testing platform 1 on the frame is generally set horizontally to improve measurement accuracy. The standard slider 2 refers to a standard slider 2 that conforms to design standards after machining and measurement. The standard slider 2 mates with the guide rail 3 to be measured. The standard slider 2 is fixed upside down onto the testing platform 1, meaning the groove on the standard slider 2 for mounting the guide rail 3 is located on the upper surface. Thus, the standard slider 2 acts as a positioning component for the guide rail 3, ensuring high fitting accuracy. This ensures that the measurement data of the guide rail 3 meets the requirements of actual use. A schematic diagram of the fitting between the standard slider 2 and the guide rail 3 is shown below. Figure 12 As shown. In actual measurement, measuring rods 9 are mounted on the measuring fixing plates 8 located on both sides of the standard slider 2 via shaft seats 15 and rotating shafts 16. The rotating shaft 16 is close to the measuring part 12, while the measuring part 13 cooperates with the displacement sensor 14. In practice, to improve measurement accuracy, the lever principle is used to amplify the measured value. That is, the horizontal distance between the rotating shaft 16 and the measuring part 12 is less than the horizontal distance between the rotating shaft 16 and the measuring part 13, thus amplifying the measured value. Under normal circumstances, the horizontal distance between the rotating shaft 16 and the measuring part 13 is several times the horizontal distance between the rotating shaft 16 and the measuring part 12, thus amplifying the measured value by that factor. The amplification factor can be determined according to the actual measurement accuracy requirements and equipment space conditions; in this embodiment, a 5x amplification is used.

[0031] A ceramic probe is installed at the lower end of the measuring section 12 of the measuring rod 9. The ceramic probe contacts the surface of the guide rail 3 to be measured, thus increasing wear resistance. The contact positions of the ceramic probes of the measuring rod 9 on both sides of the standard slider 2 with the guide rail to be measured, i.e., the measuring point positions, are as follows: Figure 13 As shown.

[0032] like Figures 3-6 As shown, a second slide rail group 17 is provided on the detection platform 1 below the measuring fixed plate 8. A bearing sliding plate 11 is slidably connected on the second slide rail group 17. The measuring fixed plate 8 is provided on the bearing sliding plate 11. A second power mechanism 10 is provided on the detection platform 1. The second power mechanism 10 drives the bearing sliding plate 11 to move on the second slide rail group 17. The sliding direction of the bearing sliding plate 11 on the second slide rail group 17 is perpendicular to the sliding direction of the guide rail 3 to be tested on the standard slider 2.

[0033] A bearing sliding plate 11 is provided below the measuring fixed plate 8, and the bearing sliding plate 11 is slidably connected to the second slide rail group 17. The second power mechanism 10 can drive the bearing sliding plate 11 to move, thereby adjusting the position of the measuring rod 9. When measuring different models of guide rails 3, a standard slider 2 matching the guide rail 3 can be selected, and the position of the corresponding measuring rod 9 can be adjusted by the second power mechanism 10 to make the measuring part 12 of the measuring rod 9 aligned with the measuring point 1 and measuring point 2 of the guide rail 3, so as to adapt to the detection of different models of guide rails 3, and have strong versatility.

[0034] Multiple guide rods 18 are arrayed on the bearing sliding plate 11, and the guide rods 18 are slidably connected to the bearing sliding plate 11. The measuring fixing plate 8 is fixed to the upper end of the guide rod 18. A lifting plate 19 is fixed to the lower end of the guide rod 18. A threaded hole is fixed in the middle part of the lifting plate 19. A mounting plate 20 is fixed to the lower surface of the bearing sliding plate 11. The mounting plate 20 extends to the lower part of the lifting plate 19. A lifting motor 21 is fixed to the mounting plate 20 below the lifting plate 19. A vertically upward drive screw 22 is provided at the output end of the lifting motor 21. The drive screw 22 is connected to the threaded hole on the lifting plate 19.

[0035] Four guide rods 18 can be provided on the bearing sliding plate 11, arranged in a rectangular array. A linear bearing can be provided on the bearing sliding plate 11, with the guide rods 18 housed within it to improve lifting stability. A mounting plate 20 is provided on the bearing sliding plate 11, and a lifting motor 21 is fixed to the mounting plate 20. The output end of the lifting motor 21 is provided with a vertically upward drive screw 22, the other end of which can be rotatably connected to the bearing sliding plate 11. A lifting plate 19 is fixed to the lower end of the guide rods 18, and the lifting plate 19 is threadedly connected to the drive screw 22. Therefore, when the drive screw 22 rotates, it drives the lifting plate 19 to rise and fall on the drive screw 22, ultimately causing the guide rods 18 and the measuring fixing plate 8 on the guide rods 18 to rise and fall. When the measuring plate 8 is raised or lowered, it drives the measuring rod 9 to rise or fall as a whole. Since the measuring end of the measuring rod 9 is against the guide rail 3 to be measured, the measuring rod 9 can rotate around the pivot 16 during the overall raising and lowering adjustment. Finally, the measuring rod 9 is kept in a horizontal state by adjusting the lifting screw. When the measuring rod 9 is in a horizontal state, the measurement accuracy of the guide rail 3 to be measured will be higher.

[0036] like Figures 7-11 As shown, the clamping mechanism 7 has the following structure: it includes a connecting plate 71 fixed on the mounting base 6, a third slide rail group 72 is provided on the connecting plate 71, two clamping blocks 73 are slidably connected on the third slide rail group 72, opposing racks 76 are fixed on the two clamping blocks 73 respectively, a clamping motor 74 is provided on the connecting plate 71, a gear 75 is provided on the output shaft of the clamping motor 74, the gear 75 meshes with the racks 76 on the two clamping blocks 73, and the sliding direction of the clamping blocks 73 on the third slide rail group 72 is perpendicular to the sliding direction of the guide rail 3 to be tested on the standard slider 2.

[0037] Mounting base 6 slides on the first slide rail group 4 driven by the first power mechanism 5. The specific structure of mounting base 6 is not limited. A horizontal connecting plate 71 is set on mounting base 6 above the guide rail 3 to be tested. A third slide rail group 72 is set on the connecting plate 71. Clamping block 73 is slidably set on the third slide rail group 72. Opposite racks 76 are set on clamping block 73. Gear 75 on clamping motor 74 is set between the two racks 76 and meshes with the racks 76. When clamping motor 74 drives gear 75 to rotate forward or reverse, the corresponding racks 76 always move in the opposite direction, ultimately realizing that clamping block 73 moves closer or further away from the third slide rail group 72 to clamp or release the guide rail 3 to be tested.

[0038] The first power mechanism 5 includes a first motor 51 mounted on the detection platform 1. A first lead screw 52 is mounted on the output shaft of the first motor 51. A first nut is fixedly mounted on the mounting base 6. The first nut is connected to the first lead screw 52. The axial direction of the first lead screw 52 is consistent with the length direction of the first slide rail group 4.

[0039] The first power mechanism 5 is composed of the first motor 51, the first lead screw 52 and the first nut. It can be driven by the first motor 51 to drive the mounting base 6 to run stably on the first slide rail group 4.

[0040] The second power mechanism 10 includes a second motor 101 mounted on the detection platform 1. A second lead screw 102 is mounted on the output shaft of the second motor 101. A second nut 103 is fixedly mounted on the bearing sliding plate 11. The second nut 103 is connected to the second lead screw 102. The axial direction of the second lead screw 102 is consistent with the length direction of the second slide rail assembly 17.

[0041] The second power mechanism 10 is composed of the second motor 101, the second lead screw 102, and the second nut 103. It can drive the bearing sliding plate 11 to run stably on the second slide rail assembly 17 through the second motor 101.

[0042] A through hole is provided on the measuring rod 9 near the measuring part 13. A vertical adjusting screw 23 is provided on the measuring fixing plate 8 corresponding to the through hole. The adjusting screw 23 passes through the through hole. Adjusting nuts 25 are provided on the adjusting screw 23 above and below the measuring rod 9. A compression spring 24 is sleeved on the adjusting screw 23 between the adjusting nut 25 and the measuring rod 9. Since the rotating shaft 16 on the measuring rod 9 is closer to the measuring part 12, the measuring rod 9 near the measuring part 13 is relatively heavier. In order to keep the measuring rod 9 basically stable and achieve the required measuring force, the measurement accuracy and precision are improved during the measurement process. By adjusting the nuts 25, the compression degree of the compression springs 24 above and below the measuring rod 9 is changed, making the measuring rod 9 more stable and preventing additional fluctuations during the measurement process that would cause deviations in the measurement results.

[0043] Support bars 26 are connected to the detection platform 1 at both ends of the standard slider 2, and the support bars 26 are in contact with the lower surface of the guide rail under test. In order to ensure that the guide rail under test 3 has support underneath when it is running, support bars 26 are set on both sides of the standard slider 2 to make the guide rail under test 3 more stable during operation.

[0044] Measurement Principle: First, a standard guide rail is manufactured. A standard guide rail refers to a guide rail that conforms to the design standard after processing. The distances from the center of the raceway of the standard guide rail to the bottom surfaces on both sides of the standard guide rail are measured as a and b, respectively, where a is a0 + a1 and b is a0 + b1. Here, a0 is the nominal dimension of the distance from the center of the raceway of the standard guide rail to the bottom surface of the standard guide rail, and a1 and b1 are the errors in the distance from the center of the raceway of the standard guide rail to the bottom surfaces on both sides of the standard guide rail.

[0045] The standard guide rail is fitted inside the standard slider 2. The position of the corresponding measuring rod 9 is adjusted by the second power mechanism 10, so that the measuring parts 12 of the two measuring rods 9 respectively contact the measuring points 1 and 2 of the standard guide rail. Then, the lifting motor 21 and the drive screw 22 are used to raise and lower the measuring fixing plate 8 and the measuring rod 9. Since the measuring part 12 of the measuring rod 9 is in contact with the bottom surface of the standard guide rail, the height of the rotating shaft 16 is actually adjusted when the measuring fixing plate 8 is raised and lowered, so that the measuring rod 9 is finally adjusted to a horizontal state.

[0046] According to the requirements, by adjusting the rotation of the nut 25, the pressure of the two compression springs 24 on the upper and lower parts of the measuring rod 9 is different, which ultimately generates an upward thrust on the measuring rod 9, and the thrust reaches the required measuring force.

[0047] Because the measuring rod 9 in this embodiment uses the 5x lever principle, the measured value is magnified by 5 times, and the displacement sensors 14 on both sides are adjusted so that their values ​​are 5a1 and 5b1 respectively.

[0048] Then, remove the standard guide rail and insert the guide rail 3 to be tested into the standard slider 2. The clamping mechanism 7 at one end of the guide rail 3 clamps the guide rail 3 to be tested and pushes it to the other end. Then, the clamping mechanism 7 at the other end clamps the guide rail 3 to be tested. The clamping mechanism 7 that clamped first releases and disengages, and the clamping mechanism 7 that clamps later pulls the guide rail 3 to be tested to the other side. During this process, the guide rail 3 to be tested can move on the standard slider 2 to complete the measurement process.

[0049] The displacement sensors 14 on both sides measured values ​​a2 and b2, respectively.

[0050] The calculation yields: raceway center height = a + (a² + b²) / 10, raceway height difference = (a² - b²) / 5, guide rail parallelism = the difference between the maximum and minimum values ​​of a² and b² / 5, and guide rail torsion = the difference between the maximum and minimum values ​​of (a² - b²) / 5.

[0051] During the measurement process, the values ​​of displacement sensor 14 are the data curves of various parts of the guide rail 3 to be measured. The required accuracy values ​​can be obtained by subsequent calculation and analysis based on the point values.

[0052] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simplification, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A guide rail comprehensive accuracy testing device, comprising a frame, wherein a testing platform is formed on the top surface of the frame, characterized in that: A standard slider is positioned in the middle of the testing platform and is fixed upside down on the platform. The guide rail to be tested slides in cooperation with the standard slider. A first slide rail assembly is positioned on the testing platform at both ends of the standard slider. A mounting base is mounted on the first slide rail assembly, extending above the guide rail to be tested. A clamping mechanism is mounted on the mounting base above the guide rail to hold it. A first power mechanism is positioned on the testing platform, driving the mounting base to reciprocate on the first slide rail assembly. The direction of movement of the mounting base on the first slide rail assembly is... The guide rail under test moves in the same direction on the standard slider. Measuring plates are provided on both sides of the standard slider. A bearing is provided on the measuring plate near the end of the standard slider, and a rotating shaft is provided on the bearing. A measuring rod is provided on the rotating shaft. One end of the measuring rod extends to the middle of the guide rail under test on the standard slider and extends downward to form a measuring section, which abuts against the guide rail under test. The other end of the measuring rod extends to the other end of the measuring plate and extends downward to form a measuring section. A displacement sensor is provided on the measuring plate below the measuring section, and the measuring section contacts the displacement sensor.

2. The guide rail comprehensive accuracy testing device according to claim 1, characterized in that: in A second slide rail assembly is provided on the detection platform below the measuring fixed plate. A bearing sliding plate is slidably connected to the second slide rail assembly. The measuring fixed plate is set on the bearing sliding plate. A second power mechanism is provided on the detection platform. The second power mechanism drives the bearing sliding plate to move on the second slide rail assembly. The sliding direction of the bearing sliding plate on the second slide rail assembly is perpendicular to the sliding direction of the guide rail to be tested on the standard slider.

3. The guide rail comprehensive accuracy testing device according to claim 2, characterized in that: in Multiple guide rods are arrayed on the bearing sliding plate, and the guide rods are slidably connected to the bearing sliding plate. The measuring fixing plate is fixed to the upper end of the guide rods, and a lifting plate is fixed to the lower end of the guide rods. A threaded hole is fixed in the middle of the lifting plate. An mounting plate is fixed to the lower surface of the bearing sliding plate, and the mounting plate extends to the lower part of the lifting plate. A lifting motor is fixed to the mounting plate below the lifting plate. The output end of the lifting motor is provided with a vertically upward drive screw, and the drive screw is connected to the threaded hole on the lifting plate.

4. The guide rail comprehensive accuracy testing device according to claim 1, characterized in that: The clamping mechanism comprises a connecting plate fixed to a mounting base, a third slide rail assembly on the connecting plate, two clamping blocks slidably connected to the third slide rail assembly, opposing racks fixed to the two clamping blocks, a clamping motor on the connecting plate, a gear on the output shaft of the clamping motor meshing with the racks on the two clamping blocks, and the sliding direction of the clamping blocks on the third slide rail assembly being perpendicular to the sliding direction of the guide rail to be tested on the standard slider.

5. The guide rail comprehensive accuracy testing device according to claim 1, characterized in that: The first power mechanism includes a first motor mounted on a testing platform, a first lead screw mounted on the output shaft of the first motor, and a first nut fixedly mounted on a mounting base. The first nut is connected to the first lead screw, and the axial direction of the first lead screw is consistent with the length direction of the first slide rail assembly.

6. The guide rail comprehensive accuracy testing device according to claim 2, characterized in that: The second power mechanism includes a second motor mounted on the detection platform, a second lead screw mounted on the output shaft of the second motor, and a second nut fixedly mounted on the bearing sliding plate. The second nut is connected to the second lead screw, and the axial direction of the second lead screw is consistent with the length direction of the second slide rail assembly.

7. The guide rail comprehensive accuracy testing device according to claim 1, characterized in that: A through hole is provided on the measuring rod near the measuring part. A vertical adjusting screw is provided on the measuring fixing plate corresponding to the through hole. The adjusting screw passes through the through hole. Adjusting nuts are provided on the adjusting screws above and below the measuring rod. A compression spring is sleeved on the adjusting screw between the adjusting nut and the measuring rod.

8. The guide rail comprehensive accuracy testing device according to claim 1, characterized in that: Support bars are attached to the testing platforms at both ends of the standard slider, and the support bars are in contact with the lower surface of the slide rail to be tested.

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