A guide rail detection device

Abstract

This invention relates to guide rail testing and discloses a guide rail testing device, including a testing platform. A first positioning seat and a second positioning seat for positioning the guide rail are respectively installed at both ends of the testing platform. A lifting support platform for supporting the guide rail is installed on the testing platform between the first and second positioning seats. A track is fixed to one side of the testing platform, and a first linear slider slides on the track. A fixing plate is installed on the first linear slider. Positioning rods are installed at both ends of one side of the fixing plate, and rollers are fitted on the positioning rods. A suspension plate is provided between two opposing rollers. A second linear slider with its opening facing upwards and sliding on the guide rail is installed on the suspension plate. A sensor for detecting the flatness of the guide rail is also installed on the suspension plate. The two ends of the suspension plate are limited between the two rollers. Since the guide rail to be tested is relatively long, it cannot always maintain a straight shape when installed on the testing platform. In this case, the adjustable position angle and horizontal displacement of the suspension plate ensure that the second linear slider can smoothly engage with the guide rail.

Description

Technical Field

[0001] This invention relates to guide rail testing, and more particularly to a guide rail testing device. Background Technology

[0002] Linear guides are widely used in machine tools and other automated equipment. Linear guides, in conjunction with linear sliders, enable module movement. During the movement of the linear slider, the straightness and side flatness of the linear guide directly affect the stability of the slider's movement. Therefore, linear guides undergo straightness and flatness testing before leaving the factory. Some current technologies use dial indicators for this testing, such as the straightness testing device for the inner hole of a billet cylinder (application number 201610348401.5). In this device, the dial indicator is mounted on a crossbar, which is mounted on a support rod. However, this technical description does not specify whether the crossbar can move on the support rod. The installation is relatively simple, and even if the crossbar can be raised and lowered on the support rod, the adjustment accuracy is low, affecting the dial indicator's measurement accuracy. The dial indicator's measuring head contacts the linear guide, and the support rod is mounted on the linear slider. The linear slider moves the dial indicator, thus detecting the flatness of the linear guide. Traditional measuring equipment has low accuracy and low intelligence, and cannot save test data in real time. Summary of the Invention

[0003] This invention addresses the shortcomings of existing guide rail detection technologies, namely low accuracy and low level of intelligence, by providing a guide rail detection device.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A guide rail testing device includes a testing platform. A first positioning seat and a second positioning seat for positioning the guide rail are respectively installed at both ends of the testing platform. A lifting support platform for supporting the guide rail is installed on the testing platform between the first and second positioning seats. A track is fixed to one side of the testing platform, and a first linear slider slides along the track. A fixing plate is installed on the first linear slider. Positioning rods are installed at both ends of one side of the fixing plate, and rollers are fitted onto the positioning rods. A suspension plate is provided between the two opposing rollers. A second linear slider with its opening facing upwards and sliding on the guide rail is installed on the suspension plate. A sensor for detecting the flatness of the guide rail is also installed on the suspension plate.

[0006] The guide rail to be tested is suspended on the testing platform. Both ends of the guide rail are positioned on the first and second positioning seats, and the middle of the guide rail is supported by a lifting support platform. A first linear slider drives a fixed plate to slide, which in turn drives a suspended plate to move synchronously. A second linear slider on the suspended plate slides on the guide rail to be tested, thus suspending the suspended plate above the fixed plate. The movement of the suspended plate moves the sensor, allowing the sensor to detect the flatness of the guide rail's end face and sides. The two ends of the suspended plate are limited between two rollers, facilitating adjustment of the suspended plate's horizontal tilt angle and lateral displacement. Since the guide rail to be tested is relatively long, it cannot always remain straight when mounted on the testing platform. The adjustable position angle and lateral displacement of the suspended plate ensure that the second linear slider smoothly engages with the guide rail.

[0007] Preferably, a third rack is fixed on one side of the testing platform, and a motor is installed on the other side of the fixing plate. The output shaft of the motor passes through the fixing plate and is connected to a gear, which meshes with the third rack.

[0008] The motor drives the gear to rotate, and the gear meshes with the third rack to drive the fixed plate to move. The fixed plate then moves the sensor to detect the flatness of the guide rail end face and side face.

[0009] Preferably, the fixing plate is equipped with at least two adjusting seats for fixing the sensor. The adjusting seats include a base, a first slider, and a support plate. The first slider is slidably mounted on the base, and the support plate is mounted on the first slider. A second guide rail is fixed to one side of the support plate. The second guide rail extends vertically from the upper end to the lower end of the support plate. A second slider slides on the second guide rail. A second rack is mounted on the second guide rail. A second adjusting bolt is installed on one side of the second slider and extends into it. The inner end of the second adjusting bolt engages with the second rack. A second locking screw is installed on the other side of the second slider to lock it to the support plate. A transversely arranged extension plate is mounted on the second slider. A clamping block for clamping the displacement sensor is mounted on the extension plate.

[0010] The adjusting seat can move horizontally and vertically. During vertical movement, the second slider engages with the second guide rail via a dovetail structure, ensuring a tight fit and high stability. For vertical adjustment, the operator rotates the second adjusting bolt, causing the second slider to move along the second rack of the second guide rail, thus precisely adjusting the vertical displacement of the displacement sensor. The second locking screw secures the second slider to the support plate, ensuring the stability of the displacement sensor's detection.

[0011] Preferably, a first guide rail in the shape of a dovetail is fixed on the upper surface of the base, a first rack is installed on the first guide rail, the first rack extends from one end of the first guide rail to the other end, a first slider is provided with a first dovetail groove that mates with the first guide rail, a first adjusting bolt is installed on one side of the first slider that extends into the first dovetail groove, the inner end of the first adjusting bolt engages with the first rack, and a first locking screw for locking it to the base is installed on the other side of the first slider.

[0012] During lateral movement, the first slider engages with the first guide rail via a dovetail structure, ensuring a tight fit and high stability. For lateral adjustment, the operator rotates the first adjusting bolt, causing the first slider to move along the first rack of the first guide rail, thus precisely adjusting the horizontal displacement of the displacement sensor. The first locking screw secures the first slider to the base, ensuring the stability of the displacement sensor's detection.

[0013] Preferably, a third adjusting bolt is installed on the extension plate, and an elongated adjusting hole is provided on one side of the extension plate. The third adjusting bolt installs the clamping block on the extension plate through the adjusting hole. A limiting groove is provided on the other side of the extension plate, which is opposite to and connected to the adjusting hole. A locking nut is placed in the limiting groove, and the third adjusting bolt is positioned on the extension plate by the locking nut.

[0014] The third adjusting bolt allows for coarse adjustment of the horizontal displacement of the displacement sensor, improving the position adjustment efficiency and shortening the adjustment time. The limiting groove is used to limit the locking nut, preventing it from rotating and facilitating adjustment by the third adjusting bolt.

[0015] Preferably, the clamping block has mounting holes extending through its upper and lower end faces, and the front end of the clamping block has a notch communicating with the mounting holes. A locking bolt for clamping the notch is installed on the clamping block. The clamping block is used to clamp the displacement sensor, and the locking bolt is used to lock the displacement sensor onto the clamping block.

[0016] Preferably, there is at least one lifting support platform. The lifting support platform includes a first lifting cylinder. A positioning plate is fixed on the telescopic rod of the first lifting cylinder. A support block is installed on the positioning plate. The support block is made of plastic and has a positioning groove for supporting and positioning the guide rail.

[0017] Because the guide rails on this testing platform are suspended in the air, the lifting support platform is used to support the guide rails and prevent them from sagging, ensuring their straightness. Simultaneously, the lifting support platform can also release the support, allowing the sensors on the suspended plate to easily test the guide rails. Once the testing of a section of the guide rails is complete, the lifting support platform for that section can then support the guide rails again.

[0018] Preferably, a pressing cylinder for pressing against the end of the guide rail is installed on the rear side of the first positioning seat. Both sides of the rear side of the first positioning seat are fixed with outwardly protruding first extension blocks. One end of the testing table is equipped with a first lifting device in the same number as the first extension blocks. The first lifting device includes a first cylinder and a first lifting rod. One end of the first lifting rod is connected to the first cylinder, and the other end is fixedly connected to the first extension block and drives the first positioning seat to rise and fall.

[0019] The first lifting device can drive the first positioning seat to move up and down. Since the thickness of some different models of guide rails is different, the height of the first positioning seat is adjusted so that the testing instrument can slide to test guide rails of different thicknesses.

[0020] Preferably, the second positioning seat is provided with a fixing groove for fixing the end of the track. Both sides of the second positioning seat are fixed with second extension blocks that extend horizontally outward. The other end of the testing table is equipped with a second lifting device in the same number as the second extension blocks. The second lifting device includes a second cylinder and a second lifting rod. One end of the second lifting rod is connected to the second cylinder, and the other end is fixedly connected to the second extension block and drives the second positioning seat to rise and fall.

[0021] The second lifting device can drive the second positioning seat to move up and down. Since the thickness of some different models of guide rails is different, the height of the second positioning seat is adjusted so that the testing instrument can slide to test guide rails of different thicknesses.

[0022] Preferably, the system also includes a processor and a display. The sensor is connected to the processor and is used to collect flatness data of the upper and side surfaces of the guide rail and send the data to the processor. The processor is connected to the display and is used to process the flatness data and send the processed data to the display.

[0023] The sensor detects the flatness of the guide rail end face and side face and displays it on the monitor. It has a high degree of intelligence, and the detection data can be saved in real time and the operator can easily view the detection results.

[0024] Preferably, the testing platform includes a first mounting platform, a second mounting platform, and a third mounting platform. The first and third mounting platforms are respectively installed at opposite ends of the second mounting platform on the same side. A first positioning seat is installed on the first mounting platform, a second positioning seat is installed on the third mounting platform, and a lifting support platform is installed on the side wall of the second mounting platform, positioned between the first and third mounting platforms. While typical testing platforms are linear, this testing platform protrudes on both sides and extends to the same side, allowing the track to be tested to be suspended on the first and third mounting platforms.

[0025] Preferably, the side wall of the base is printed with a first scale for measuring the movement distance of the first slider, and the side wall of the support plate is printed with a second scale for measuring the lifting height of the second slider. The first and second scales allow the operator to easily observe the movement distance of the displacement sensor and improve adjustment accuracy.

[0026] This invention, by adopting the above technical solutions, has significant technical effects:

[0027] The guide rail to be tested is suspended on the testing platform. Both ends of the guide rail are positioned on the first and second positioning seats, and the middle of the guide rail is supported by a lifting support platform. A first linear slider drives a fixed plate to slide, which in turn drives a suspended plate to move synchronously. A second linear slider on the suspended plate slides on the guide rail to be tested, thus suspending the suspended plate above the fixed plate. The movement of the suspended plate moves the sensor, allowing the sensor to detect the flatness of the guide rail's end face and sides. The two ends of the suspended plate are limited between two rollers, facilitating adjustment of the suspended plate's horizontal tilt angle and lateral displacement. Since the guide rail to be tested is relatively long, it cannot always remain straight when mounted on the testing platform. The adjustable position angle and lateral displacement of the suspended plate ensure that the second linear slider smoothly engages with the guide rail. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure in the first position state of the present invention.

[0029] Figure 2 This is a structural schematic diagram of the second position state of the present invention.

[0030] Figure 3 yes Figure 1 A schematic diagram of the structure of the testing station.

[0031] Figure 4 yes Figure 2 A magnified view of part A in the image.

[0032] Figure 5 yes Figure 1 A schematic diagram of the first position of the middle adjustment seat.

[0033] Figure 6 yes Figure 1 A schematic diagram of the second position of the adjustment seat.

[0034] Figure 7 yes Figure 2 A schematic diagram of the structure of the central support block.

[0035] The parts referred to by the numbers in the above attached figures are as follows: 10—Detection table, 11—First positioning seat, 12—Second positioning seat, 13—Lifting support platform, 14—Rail, 15—First linear slider, 16—Fixed plate, 17—Positioning rod, 18—Roller, 19—Suspension plate, 20—Second linear slider, 21—Sensor, 22—Third rack, 23—Motor, 24—Adjusting seat, 25—Top pressure cylinder, 26—First extension block, 27—First lifting rod, 28—Second extension block, 29—Second lifting rod, 30—Display, 101—First mounting platform, 102—Second mounting platform, 103—Third mounting platform, 121—Fixed groove, 131— First lifting cylinder, 132—positioning plate, 133—support block, 1331—positioning groove, 241—base, 242—first slider, 243—support plate, 244—second slider, 245—second rack, 246—second adjusting bolt, 247—second locking screw, 248—extension plate, 249—clamping block, 2410—first guide rail, 2411—first rack, 2412—first adjusting bolt, 2413—first locking screw, 2414—locking nut, 2415—locking bolt, 2416—third adjusting bolt, 2431—second guide rail, 2481—adjusting hole, 2482—limiting groove, 2491—mounting hole, 2492—notch. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-7 The invention will be further described in detail with reference to the embodiments.

[0037] Example 1

[0038] A guide rail testing device includes a testing platform 10. A first positioning seat 11 and a second positioning seat 12 for positioning the guide rail are respectively installed at both ends of the testing platform 10. One end of the guide rail to be tested is fixed on the first positioning seat 11, and the other end is fixed on the second positioning seat 12. A lifting support platform 13 for supporting the guide rail is installed on the testing platform 10 between the first positioning seat 11 and the second positioning seat 12. In this embodiment, the number of lifting support platforms 13 is five. A track 14 is fixed to one side of the testing platform 10. A first linear slider 15 slides on the track 14. A fixing plate 16 is installed on the first linear slider 15 and is connected to the first linear slider 15 by bolts. Positioning rods 17 are installed at both ends of one side of the fixing plate 16. The horizontal line connecting the two positioning rods 17 is parallel to the track 14. Rollers 18 are mounted on the positioning rods 17. A suspension plate 19 is provided between the two opposing rollers 18. A second linear slider 20 with its opening facing upward and sliding on the guide rail is installed on the suspension plate 19. A sensor 21 for detecting the flatness of the guide rail is also installed on the suspension plate 19. In this embodiment, there are three sensors 21. Two sensors 21 are used to detect the flatness of the two sides of the top end face of the guide rail, and the other sensor 21 is used to detect the flatness of the side face of the guide rail. The guide rail to be tested is suspended on the testing platform 10. The two ends of the guide rail are positioned on the first positioning seat 11 and the second positioning seat 12, and the middle part of the guide rail is supported by a lifting support platform 13. The first linear slider 15 drives the fixed plate 16 to slide, and the fixed plate 16 drives the suspension plate 19 to move synchronously. The second linear slider 20 on the suspension plate 19 slides on the guide rail to be tested, so that the suspension plate 19 is suspended on the fixed plate 16. The movement of the suspension plate 19 drives the sensor 21 to move, so that the sensor 21 can detect the flatness of the end face and side face of the guide rail. The two ends of the suspension plate 19 are limited between the two rollers 18, which facilitates the adjustment of the horizontal tilt angle and horizontal displacement of the suspension plate 19. Since the guide rail to be tested is relatively long, it cannot always be kept in a straight line when it is installed on the testing table 10. At this time, the adjustable position angle and horizontal displacement of the suspension plate 19 can ensure that the second linear slider 20 can be smoothly engaged on the guide rail.

[0039] A third rack 22 is fixed on one side of the testing table 10, and a motor 23 is installed on the other side of the fixing plate 16. The output shaft of the motor 23 passes through the fixing plate 16 and is connected to a gear. The gear meshes with the third rack 22. When the motor 23 drives the gear to rotate, the gear meshes and moves on the third rack 22, thereby causing the fixing plate 16 to move along the track 14. The second linear slider 20 on the fixing plate 16 slides on the guide rail to be tested. At the same time, the sensor 21 moves synchronously on the guide rail and tests the guide rail.

[0040] The testing platform 10 includes a first mounting platform 101, a second mounting platform 102, and a third mounting platform 103. The first mounting platform 101 and the third mounting platform 103 are respectively installed at the two ends of the same side of the second mounting platform 102. A first positioning seat 11 is installed on the first mounting platform 101, and a second positioning seat 12 is installed on the third mounting platform 103, so that the guide rail to be tested is mounted on the first mounting platform 101 and the third mounting platform 103. A lifting support platform 13 is installed on the side wall of the second mounting platform 102, and the lifting support platform 13 is located between the first mounting platform 101 and the third mounting platform 103. The third rack 22 and the rail 14 are both installed on the second mounting platform 102.

[0041] At least two adjustment seats 24 for fixing the sensor 21 are installed on the fixing plate 16. In this embodiment, there are three adjustment seats 24. Each adjustment seat 24 includes a base 241, a first slider 242 and a support plate 243. The first slider 242 is slidably installed on the base 241. When it is necessary to adjust the horizontal displacement of the sensor 21, it is only necessary to adjust the position of the first slider 242 on the base 241. The support plate 243 is bolted to the first slider 242. The support plate 243 is vertically mounted on the first slider 242. A second guide rail 2431 is fixed to one side of the support plate 243. In this embodiment, the second guide rail 2431 is part of the support plate 243, that is, the support plate 243 and the second guide rail 2431 are integral. The horizontal cross-section of the second guide rail 2431 is dovetail-shaped. The second guide rail 2431 extends vertically from the upper end to the lower end of the support plate 243. A second slider 244 slides on the second guide rail 2431. The second slider 244 is provided with a second dovetail groove that cooperates with the second guide rail 2431. The second slider 244 and the second guide rail 2431 are connected by a dovetail joint, which provides good stability between them. The second slider 244 will not detach from the second guide rail 2431 when it slides. A second rack 245 is mounted on the second guide rail 2431. The second guide rail 2431 has a mounting groove, in which the second rack 245 is installed. A second adjusting bolt 246, extending into a second dovetail groove, is mounted on one side of the second slider 244. The inner end of the second adjusting bolt 246 meshes with the second rack 245, allowing for high adjustment precision of the second slider 244 on the support plate 243. A second locking screw 247 is mounted on the other side of the second slider 244 to lock it onto the support plate 243. After the second slider 244 is positioned, the second locking screw 247 is tightened, thus fixing the second slider 244 onto the support plate 243. A laterally arranged extension plate 248 is mounted on the second slider 244, extending to the location of the second linear slider 20. A clamping block 249 for clamping the displacement sensor 21 is mounted on the extension plate 248.

[0042] A dovetail-shaped first guide rail 2410 is fixed to the upper surface of the base 241. A first rack 2411 is mounted on the first guide rail 2410, extending from one end of the first guide rail 2410 to the other end. A first slider 242 has a first dovetail groove that mates with the first guide rail 2410. A first adjusting bolt 2412, extending into the first dovetail groove, is mounted on one side of the first slider 242. The inner end of the first adjusting bolt 2412 engages with the first rack 2411. A first locking screw 2413 for locking the first slider 242 onto the base 241 is mounted on the other side of the first slider 242. The operator adjusts the lateral position of the sensor 21 on the guide rail end face by adjusting the position of the first slider 242 on the base 241. The first slider 242 engages with the first rack 2411 on the base 241 through the first adjusting bolt 2412, allowing for high adjustment precision.

[0043] A third adjusting bolt 2416 is installed on the extension plate 248. One side of the extension plate 248 has an elongated adjusting hole 2481. The third adjusting bolt 2416 uses this hole to mount the clamping block 249 onto the extension plate 248. The other side of the extension plate 248 has a limiting groove 2482 that is opposite to and communicates with the adjusting hole 2481. A locking nut 2414 is placed in the limiting groove 2482, and the third adjusting bolt 2416 is positioned on the extension plate 248 by the locking nut 2414. The third adjusting bolt 2413 is used to adjust the lateral position of the clamping block 249. The clamping block 249 can be quickly adjusted to its approximate position, and then finely adjusted using the first adjusting bolt 2412.

[0044] The clamping block 249 has a mounting hole 2491 extending through its upper and lower end faces. The front end of the clamping block 249 has a notch 2492 communicating with the mounting hole 2491. A locking bolt 2415 for clamping the notch 2492 is installed on the clamping block 249. The sensor 21 is installed in the mounting hole 2491 and locked to the clamping block 249 by the locking bolt 2415.

[0045] The number of lifting support platforms 13 is at least one. In this embodiment, the number of lifting support platforms 13 is at least five. The lifting support platform 13 includes a first lifting cylinder 131. A positioning plate 132 is fixed on the telescopic rod of the first lifting cylinder 131. A support block 133 is installed on the positioning plate 132. The support block 133 is fixed to the positioning plate 132 by bolts. The support block 133 is a plastic support block. The material of the support block 133 is polyethylene or polypropylene. The support block 133 is provided with a positioning groove 1331 for supporting and positioning the guide rail. The positioning groove 1331 ensures the straightness of the guide rail.

[0046] A pressing cylinder 25 for pressing against the end of the guide rail is installed on the rear side of the first positioning seat 11. Two outwardly protruding first extension blocks 26 are fixed on both sides of the rear side of the first positioning seat 11. One end of the detection table 10 is equipped with a first lifting device, the same number as the first extension blocks 26. The two first lifting devices are respectively connected to the corresponding ends of the first extension blocks 26. Simultaneous lifting of the two first lifting devices ensures good stability of the first positioning seat 11 when adjusting its height. The first lifting device includes a first cylinder and a first lifting rod 27. One end of the first lifting rod 27 is connected to the first cylinder, and the other end is fixedly connected to the first extension block 26, driving the first positioning seat 11 to rise and fall.

[0047] The second positioning seat 12 is provided with a fixing groove 121 for fixing the end of the rail. The guide rail is fixed in the fixing groove 121 by bolts. Both sides of the second positioning seat 12 are fixed with horizontally extending second extension blocks 28 by bolts. In this embodiment, there are four second extension blocks 28, that is, two second extension blocks 28 are respectively provided on each side of the second positioning seat 12. The other end of the detection table 10 is equipped with a second lifting device, the same number as the number of second extension blocks 28. The four second lifting devices are respectively connected to the corresponding ends of the second extension blocks 28. The second positioning seat 12 has good stability when adjusting its height. The second lifting device includes a second cylinder and a second lifting rod 29. One end of the second lifting rod 29 is connected to the second cylinder, and the other end is fixedly connected to the second extension block 28 and drives the second positioning seat 12 to rise and fall.

[0048] Example 2

[0049] Example 2 is basically the same as Example 1, except that the side wall of the base 241 is printed with a first scale for measuring the moving distance of the first slider 242, and the side wall of the support plate 243 is printed with a second scale for measuring the lifting height of the second slider 244. The first and second scales make it easier for the operator to observe the moving distance of the displacement sensor 21 and improve the adjustment accuracy.

[0050] Example 3

[0051] Example 3 is basically the same as Example 1, except that the guide rail detection device also includes a processor and a display 30. The sensor 21 is connected to the processor and is used to collect flatness data of the upper end face and side face of the guide rail and send the data to the processor. The processor is connected to the display 30 and is used to process the flatness data and send the processed data to the display 30.

Claims

1. A guide rail testing device, comprising a testing table (10), characterized in that: The testing platform (10) is equipped with a first positioning seat (11) and a second positioning seat (12) for positioning the guide rail at both ends. A lifting support platform (13) for supporting the guide rail is installed on the testing platform (10) between the first positioning seat (11) and the second positioning seat (12). A track (14) is fixed on one side of the testing platform (10). A first linear slider (15) slides on the track (14). A fixed plate (16) is installed on the first linear slider (15). A positioning rod (17) is installed at both ends of one side of the fixed plate (16). A roller (18) is fitted on the positioning rod (17). A suspension plate (19) is provided between the two opposing rollers (18). The suspension plate (19) is suspended on the fixed plate (16). A second linear slider (20) with its opening facing upward and sliding on the guide rail is installed on the suspension plate (19). A sensor (21) for detecting the flatness of the guide rail is also installed on the suspension plate (19).

2. The guide rail testing device according to claim 1, characterized in that: A third rack (22) is fixed on one side of the testing platform (10), and a motor (23) is installed on the other side of the fixing plate (16). The output shaft of the motor (23) passes through the fixing plate (16) and is connected to a gear. The gear meshes with the third rack (22).

3. The guide rail testing device according to claim 1, characterized in that: At least two adjusting seats (24) for fixing sensors (21) are installed on the fixing plate (16). The adjusting seat (24) includes a base (241), a first slider (242), and a support plate (243). The first slider (242) is slidably mounted on the base (241), and the support plate (243) is mounted on the first slider (242). A second guide rail (2431) is fixed on one side of the support plate (243). The second guide rail (2431) extends vertically from the upper end to the lower end of the support plate (243). A second guide rail (2431) slides on the second guide rail (2431). The second slider (244) has a second rack (245) mounted on the second guide rail (2431). A second adjusting bolt (246) is installed on one side of the second slider (244) and its inner end engages with the second rack (245). A second locking screw (247) for locking the second slider (244) onto the support plate (243) is installed on the other side of the second slider (244). A transversely arranged extension plate (248) is installed on the second slider (244), and a clamping block (249) for clamping the displacement sensor is installed on the extension plate (248).

4. The guide rail testing device according to claim 3, characterized in that: A first guide rail (2410) in the shape of a dovetail is fixed on the upper surface of the base (241). A first rack (2411) is installed on the first guide rail (2410). The first rack (2411) extends from one end of the first guide rail (2410) to the other end. A first dovetail groove that mates with the first guide rail (2410) is provided on the first slider (242). A first adjusting bolt (2412) that extends into the first dovetail groove is installed on one side of the first slider (242). The inner end of the first adjusting bolt (2412) meshes with the first rack (2411). A first locking screw (2413) for locking the first slider (242) onto the base (241) is installed on the other side of the first slider (242).

5. The guide rail testing device according to claim 3, characterized in that: A third adjusting bolt (2416) is installed on the extension plate (248). A long strip-shaped adjusting hole (2481) is provided on one side of the extension plate (248). The third adjusting bolt (2416) installs the clamping block (249) on the extension plate (248) through the adjusting hole. A limiting groove (2482) is provided on the other side of the extension plate (248) that is opposite to and connected to the adjusting hole (2481). A locking nut (2414) is placed in the limiting groove (2482). The third adjusting bolt (2416) is positioned on the extension plate (248) by the locking nut (2414).

6. The guide rail testing device according to claim 3, characterized in that: The clamping block (249) has a mounting hole (2491) that passes through its upper and lower end faces. The front end of the clamping block (249) has a notch (2492) that communicates with the mounting hole (2491). The clamping block (249) is equipped with a locking bolt (2415) for clamping the notch (2492).

7. The guide rail testing device according to claim 1, characterized in that: The number of lifting support platforms (13) is at least one. The lifting support platform (13) includes a first lifting cylinder (131). A positioning plate (132) is fixed on the telescopic rod of the first lifting cylinder (131). A support block (133) is installed on the positioning plate (132). The support block (133) is a support block made of plastic. The support block (133) is provided with a positioning groove (1331) for supporting and positioning the guide rail.

8. The guide rail testing device according to claim 1, characterized in that: The rear side of the first positioning seat (11) is equipped with a pressing cylinder (25) for pressing against the end of the guide rail. Both sides of the rear side of the first positioning seat (11) are fixed with outwardly protruding first extension blocks (26). One end of the testing table (10) is equipped with a first lifting device with the same number as the first extension blocks (26). The first lifting device includes a first cylinder and a first lifting rod (27). One end of the first lifting rod (27) is connected to the first cylinder, and the other end is fixedly connected to the first extension block (26) and drives the first positioning seat (11) to rise and fall.

9. The guide rail testing device according to claim 1, characterized in that: The second positioning seat (12) is provided with a fixing groove (121) for fixing the end of the track. The second positioning seat (12) is fixed with horizontally extending second extension blocks (28) on both sides. The other end of the testing table (10) is equipped with a second lifting device with the same number as the second extension blocks (28). The second lifting device includes a second cylinder and a second lifting rod (29). One end of the second lifting rod (29) is connected to the second cylinder, and the other end is fixedly connected to the second extension block (28) and drives the second positioning seat (12) to rise and fall.

10. A guide rail testing device according to any one of claims 1-9, characterized in that: It also includes a processor and a display (30). A sensor (21) is connected to the processor. The sensor (21) is used to collect flatness data of the upper end face and side face of the guide rail and send the data to the processor. The processor is connected to the display (30). The processor is used to process the flatness data and send the processed data to the display (30). The detection table (10) includes a first mounting table (101), a second mounting table (102) and a third mounting table (103). The first mounting table (101) and the third mounting table (103) are respectively installed at the two ends of the same side of the second mounting table (102). The first positioning seat (11) is installed on the first mounting table (101). The second positioning seat (12) is installed on the third mounting table (103). The lifting support table (13) is installed on the side wall of the second mounting table (102). The lifting support table (13) is located between the first mounting table (101) and the third mounting table (103).

Images