A guide rail straightness detection device

Abstract

The utility model discloses a guide rail straightness detection device, including work table, one side of work table is fixedly connected with the connecting frame, the connecting frame is fixedly connected with the guide shell, the middle part of guide shell is provided with the through -hole, the sliding block is slidably connected in the guide shell, the guide shell slidingly connected has extruded plate, the sliding block is provided with support structure, be provided with the support plate on the support structure, the support plate is fixedly connected with the autocollimator, and the slider of guide rail is placed with the support plate, the support plate is fixedly connected with the stand, the stand is fixedly connected with the reflector, the guide shell with extruded plate between is provided with the clamping structure, be provided with fixed correction structure on the support plate. The utility model discloses a guide shell and extruded plate to the fixed mode of sliding block, make the sliding block complete fixed in short time, do not need accurate control autocollimator's position, reduced the difficulty of autocollimator correction, improved the measurement efficiency of guide rail straightness.

Description

Technical Field

[0001] The utility model relates to the technical field of guide rail straightness detection, and more specifically, it relates to a guide rail straightness detection device. Background Art

[0002] Linear guide rails can be divided into three types: roller linear guide rails, cylindrical linear guide rails, and ball linear guide rails. They are used to support and guide moving parts to perform reciprocating linear motion in a given direction. When producing rolling linear guide rails, good straightness needs to be achieved. The straightness of linear guide rails is one of the quality inspection items. However, the existing detection methods mainly involve installing a reflector on the slider on the surface of the linear guide rail, adjusting the height of the detector so that the laser can be accurately emitted onto the reflector for reflection, and detecting by manually adjusting the position of the slider.

[0003] Although the above methods can all detect the straightness of the guide rail, there are still the following problems:

[0004] 1. The adjustment mechanism of the existing laser detector is complex in design and sensitive in operation. It is equipped with a large number of adjustment knobs. The staff must rotate these knobs extremely slowly and carefully to gradually fine-tune the height, angle, and spatial position of the detector. The problem is that the sensitivity of these adjustment knobs is extremely high. During the operation, if there is a slight carelessness and the rotation amplitude of the knob slightly exceeds the expected value, it will immediately cause a significant and unacceptable deviation between the reflector and the detector.

[0005] 2. When the existing detector is used to detect the guide rail, a complex and time-consuming adjustment process must be carried out to ensure that the reflector and the laser detector are precisely in a facing state. More critically, once the model of the待测 guide rail changes, due to installation benchmarks or dimensional differences, the entire adjustment work must be completely redone. This directly results in a large amount of valuable time being consumed in the repeated preparation and adjustment stages during the entire guide rail straightness detection process, rather than the core measurement link, seriously restricting the overall detection efficiency.

[0006] 3. The existing fixing method of the reflector has obvious stability defects. It only relies on a magnetic plate to directly adsorb on the surface of the detection slider. This connection method has insufficient rigidity and weak anti-interference ability. During the dynamic process of straightness measurement along the guide rail, when any inadvertent slight touch or external disturbance (such as the hand of the operator, connecting cables, or slight vibration of the environment) acts on the reflector itself or its vicinity, it is very likely to cause the adsorption state to be damaged, resulting in the displacement or angular deviation of the reflector.

[0007] Therefore, it is necessary to design a guide rail straightness detection device aiming at the shortcomings of the existing technology. Content of the Utility Model

[0008] 1. Technical problems to be solved

[0009] In view of the problems existing in the prior art, this utility model provides a guide rail straightness detection device to solve the technical problems mentioned in the background art.

[0010] 2. Technical Solution

[0011] To achieve the above objectives, this utility model provides the following technical solution: a guide rail straightness detection device, comprising a worktable, a connecting frame fixedly connected to one side of the worktable, a guide shell fixedly connected to the connecting frame, a through hole provided in the middle of the guide shell, a sliding block slidably connected inside the guide shell, the diameter of the sliding block being smaller than the diameter of the guide shell, the diameter of the through hole in the guide shell being smaller than the diameter of the sliding block, a pressing plate slidably connected to the guide shell, a support structure provided for the sliding block, a support plate provided on the support structure, an autocollimator fixedly connected to the support plate, a support plate placed on the slider of the guide rail, a column fixedly connected to the support plate, a reflector fixedly connected to the column, a recording terminal fixedly connected to the worktable, the recording terminal being connected to the autocollimator via a data cable, a clamping structure provided between the guide shell and the pressing plate, and a fixing and correction structure provided on the support plate.

[0012] The present invention is further configured such that the support structure includes a fixed sleeve, a sliding column is slidably connected to the fixed sleeve, the sliding column is fixedly connected to the support plate, a spring is sleeved on the sliding column, the two ends of the spring are fixedly connected to the support plate and the fixed sleeve respectively, and a threaded rod is threadedly connected to one side of the fixed sleeve.

[0013] The present invention is further configured such that the clamping structure includes two fixing plates, the two fixing plates are fixedly connected to the guide shell, the fixing plates are threadedly connected to threaded rods, the pressing plate is fixedly connected to two fixing frames, the threaded rods penetrate adjacent fixing frames and are slidably connected, the top end of the threaded rods is fixedly connected to a rotating wheel, the rotating wheel is pressed and engaged with the adjacent fixing frame, and the threaded rods are sleeved with springs, the two ends of the springs are respectively fixedly connected to the adjacent fixing plate and the adjacent fixing frame.

[0014] The present invention is further configured such that the fixed correction structure includes two clamping members, the support plate is provided with two sliding grooves, the two clamping members are slidably connected in the two sliding grooves of the support plate, and a spring is provided in the sliding groove of the support plate, the two ends of the spring being fixedly connected to the clamping members and the support plate respectively.

[0015] The present invention is further configured such that the clamping member is fixedly connected to a connecting plate, the support plate is fixedly connected to two guide rings, the connecting plate is fixedly connected to a pull rope, the pull rope passes through the adjacent guide rings, the outer side of the column is provided with threads, the column is threadedly connected to a threaded sleeve, the lower side of the threaded sleeve is rotatably connected to a rotating ring, and the two pull ropes are fixedly connected to the rotating ring.

[0016] The present invention is further configured such that two insert rods are fixedly connected to the support plate, and a correction block is fixedly connected to the outer wall of the guide shell. The correction block is provided with two blind holes, and the diameter of the blind holes of the correction block is the same as the diameter of the insert rods.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, this utility model provides a guide rail straightness detection device, which has the following beneficial effects:

[0019] 1. This utility model uses a guide shell and a pressing plate to fix the sliding block, which allows the sliding block to be fixed in a short time. The operator only needs to rotate two wheels, without the need to precisely control the position of the autocollimator, which reduces the difficulty of calibrating the autocollimator and improves the measurement efficiency of the straightness of the guide rail.

[0020] 2. This utility model uses two insert rods to be inserted into the two blind holes of the calibration block. At this time, the direction of the blind holes of the calibration block is the same as the direction of the insert rods, and the center point of the autocollimator and the center point of the reflector are on the same straight line. During the process of inserting the rods into the blind holes of the calibration block, the sliding block will move laterally along the guide shell until the rods are fully inserted into the blind holes of the calibration block. The sliding block then stops moving and reaches a stable state, thereby adjusting the height, angle, and offset position of the autocollimator so that the autocollimator and the reflector are aligned. This reduces the time that workers spend adjusting the autocollimator, improving not only the measurement accuracy of the guide rail but also the detection efficiency of the track straightness.

[0021] 3. This utility model involves rotating a threaded sleeve, which moves upward along the outer thread of the column. The threaded sleeve drives a rotating ring to move upward, and the rotating ring pulls two ropes. Under the tension of the two ropes, the two clamping parts move closer to each other, thus clamping the clamping parts on the outside of the slider. Then, the rotation of the threaded sleeve is stopped, and the support plate is fixed on the slider by the two clamping parts. This improves the stability of the reflector when it moves along the guide rail and prevents the reflector from shifting its position during measurement. Attached Figure Description

[0022] Figure 1 This is a front structural diagram of a guide rail straightness detection device according to the present invention;

[0023] Figure 2This is a schematic diagram of the cooperation structure between the autocollimator and the reflector in this utility model;

[0024] Figure 3 This is a schematic diagram of the cooperative structure of the guide shell and the extrusion plate in this utility model;

[0025] Figure 4 This is a cross-sectional view of the guide shell and the extrusion plate in this utility model;

[0026] Figure 5 This is a schematic diagram of the mating structure of the fixed plate and the threaded rod II in this utility model;

[0027] Figure 6 This is a cross-sectional view of the sliding block and the fixed sleeve in this utility model;

[0028] Figure 7 This is a schematic diagram of the mating structure of the support plate and the clamping member in this utility model;

[0029] Figure 8 This is a cross-sectional view of the support plate in this utility model.

[0030] In the diagram: 1. Workbench; 2. Connecting frame; 3. Guide shell; 4. Sliding block; 5. Extrusion plate; 6. Support plate; 7. Autocollimator; 8. Support plate; 9. Column; 10. Reflector; 11. Recording terminal; 12. Fixing sleeve; 13. Sliding column; 14. Spring 1; 15. Threaded rod 1; 16. Fixing plate; 17. Threaded rod 2; 18. Fixing frame; 19. Rotating wheel; 20. Spring 2; 21. Clamping element; 22. Spring 3; 23. Connecting plate; 24. Guide ring; 25. Pull rope; 26. Threaded sleeve; 27. Rotating ring; 28. Insert rod; 29. ​​Correction block. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0033] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0034] Please see Figures 1-6 A guide rail straightness testing device includes a worktable 1, a connecting frame 2 fixedly connected to one side of the worktable 1, a guide shell 3 fixedly connected to the connecting frame 2, a through hole provided in the middle of the guide shell 3, a sliding block 4 slidably connected inside the guide shell 3, the diameter of the sliding block 4 being smaller than the diameter of the guide shell 3, the diameter of the through hole in the guide shell 3 being smaller than the diameter of the sliding block 4, a pressing plate 5 slidably connected to the guide shell 3, a support structure provided for the sliding block 4, a support plate 6 provided on the support structure, an autocollimator 7 fixedly connected to the support plate 6, a support plate 8 placed on the slider of the guide rail, a column 9 fixedly connected to the support plate 8, a reflector 10 fixedly connected to the column 9, a recording terminal 11 fixedly connected to the worktable 1, the recording terminal 11 being connected to the autocollimator 7 via a data cable, a clamping structure provided between the guide shell 3 and the pressing plate 5, and a fixing and correction structure provided on the support plate 8.

[0035] Please see Figure 4 and Figure 6 The support structure includes a fixed sleeve 12, a sliding column 13 slidably connected to the fixed sleeve 12, the sliding column 13 being fixedly connected to the support plate 6, a spring 14 being sleeved on the sliding column 13, the two ends of the spring 14 being fixedly connected to the support plate 6 and the fixed sleeve 12 respectively, and a threaded rod 15 being threadedly connected to one side of the fixed sleeve 12.

[0036] Please see Figure 4 and Figure 5 The clamping structure includes two fixing plates 16, which are fixed to the guide shell 3. The fixing plates 16 are threadedly connected to threaded rods 17. The pressing plate 5 is fixed to two fixing frames 18. The threaded rods 17 pass through the adjacent fixing frames 18 and are slidably connected. The top end of the threaded rods 17 is fixed to a rotating wheel 19, which is pressed into the adjacent fixing frame 18. The threaded rods 17 are fitted with springs 20, and the two ends of the springs 20 are fixed to the adjacent fixing plates 16 and the adjacent fixing frames 18, respectively.

[0037] Please see Figure 7 and Figure 8 The fixed correction structure includes two clamping members 21, and the support plate 8 is provided with two sliding grooves. The two clamping members 21 are slidably connected in the two sliding grooves of the support plate 8. A spring 22 is provided in the sliding groove of the support plate 8, and the two ends of the spring 22 are fixedly connected to the clamping member 21 and the support plate 8 respectively. A connecting plate 23 is fixedly connected to the clamping member 21, and two guide rings 24 are fixedly connected to the support plate 8. A pull rope 25 is fixedly connected to the connecting plate 23. The pull rope 25 passes through the adjacent guide ring 24. The outer side of the column 9 is provided with threads, and a threaded sleeve 26 is threadedly connected to the column 9. A rotating ring 27 is rotatably connected to the lower side of the threaded sleeve 26. The two pull ropes 25 are fixedly connected to the rotating ring 27. The present invention is further configured such that two insert rods 28 are fixedly connected to the support plate 8, and a correction block 29 is fixedly connected to the outer wall of the guide shell 3. The correction block 29 is provided with two blind holes, and the diameter of the blind holes of the correction block 29 is the same as the diameter of the insert rods 28.

[0038] Specifically, in this embodiment, when the straightness of the guide rail needs to be measured, the guide rail is first fixed on the workbench 1, and then a slider is installed on the guide rail. In the initial state, the pressing plate 5 does not press the sliding block 4, and the threaded rod does not press the sliding column 13 either. Under the elastic force of the spring 14, the fixing sleeve 12 and the sliding column 13 are in a relatively static state. Then, the support plate 8 is placed on the slider. After the operator adjusts the position of the support plate 8, the threaded sleeve 26 is rotated. The threaded sleeve 26 moves upward along the outer thread of the column 9. The threaded sleeve 26 drives the rotating ring 27 to move upward. The rotating ring 27 pulls the two pull ropes 25. Under the tension of the two pull ropes 25, the two clamping parts 21 move closer to each other, thereby clamping the clamping parts 21 on the outside of the slider. Then, the rotation of the threaded sleeve 26 is stopped. The support plate 8 is fixed on the slider by the two clamping parts 21, which improves the stability of the reflector 10 when it moves along the guide rail and avoids the reflector 10 from shaking, which would cause detection errors.

[0039] After the above operations are completed, the operator pushes the slider to the right, so that the two insert rods 28 are inserted into the two blind holes of the correction block 29 respectively. At this time, the direction of the blind holes of the correction block 29 is the same as the direction of the insert rods 28, and the center point of the collimator 7 and the center point of the reflector 10 are on the same straight line. During the process of inserting the insert rods 28 into the blind holes of the correction block 29, the sliding block 4 will move laterally along the guide shell 3 until the insert rods 28 are fully inserted into the blind holes of the correction block 29. The sliding block 4 then stops moving and reaches a stable state. At the same time, the operator rotates the two rotating wheels 19. The rotating wheels 19 drive the threaded rod 17 to rotate circumferentially. The threaded rod moves downward along the fixed plate 16. As the threaded rod moves downward, the rotating wheels 19 press the adjacent fixed frame 18. The two springs 20 are compressed. The two fixed frames 18 drive the pressing plate 5 to move downward, so that the pressing plate 5 presses on the upper side of the sliding block 4, thereby fixing the sliding block 4 and completing the lateral adjustment and fixing of the sliding block 4.

[0040] Similarly, as the height of the guide rail changes, the height of the reflector 10 will also change. During the process of inserting the rod 28 into the blind hole of the correction block 29, the sliding column 13 will slide along the vertical direction of the fixing sleeve 12. After the rod 28 is fully inserted into the blind hole of the correction block 29, the operator will rotate the threaded rod 15 to fix the sliding column 13, so that the sliding column 13 and the fixing sleeve 12 are in a relatively stationary state.

[0041] Then, the autocollimator 7 is started through the recording terminal 11. The autocollimator 7 works in conjunction with the reflector 10 to measure the straightness of the guide rail (the measurement process is existing technology and will not be described in detail here). The measurement results will be recorded in real time on the recording terminal 11. After the measurement is completed, the support plate 8 needs to be removed from the slider. Simply rotate the threaded sleeve 26 in the reverse direction to make the threaded sleeve 26 drive the rotating ring 27 to move downward. Under the elastic force of the spring 3 22, the two clamping parts 21 move away from each other and lose contact with the slider. Then the support plate 8 can be removed. Then, rotate the threaded rod 15 and the threaded rod 27 in the reverse direction in sequence to release the fixation of the sliding block 4 and the sliding column 13. When measuring different models of guide rails, repeat the above operation to complete the straightness test.

[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A guide rail straightness testing device, comprising a worktable (1), wherein a connecting frame (2) is fixedly connected to one side of the worktable (1), characterized in that: The connecting frame (2) is fixedly connected to a guide shell (3). A through hole is provided in the middle of the guide shell (3). A sliding block (4) is slidably connected inside the guide shell (3). The diameter of the sliding block (4) is smaller than the diameter of the guide shell (3). The diameter of the through hole of the guide shell (3) is smaller than the diameter of the sliding block (4). A pressing plate (5) is slidably connected to the guide shell (3). A support structure is provided on the sliding block (4). A support plate (6) is provided on the support structure. An autocollimator (7) is fixedly connected to the support plate (6). A support plate (8) is placed on the slider of the guide rail. A column (9) is fixedly connected to the support plate (8). A reflector (10) is fixedly connected to the column (9). A recording terminal (11) is fixedly connected to the worktable (1). The recording terminal (11) is connected to the autocollimator (7) via a data cable. A clamping structure is provided between the guide shell (3) and the pressing plate (5). A fixed correction structure is provided on the support plate (8).

2. The guide rail straightness detection device according to claim 1, characterized in that: The support structure includes a fixed sleeve (12), which is slidably connected to a sliding column (13). The sliding column (13) is fixedly connected to the support plate (6). A spring (14) is sleeved on the sliding column (13). The two ends of the spring (14) are fixedly connected to the support plate (6) and the fixed sleeve (12) respectively. A threaded rod (15) is threadedly connected to one side of the fixed sleeve (12).

3. The guide rail straightness detection device according to claim 2, characterized in that: The clamping structure includes two fixing plates (16), which are fixed to the guide shell (3). The fixing plates (16) are threaded with threaded rods (17). The pressing plate (5) is fixed with two fixing frames (18). The threaded rods (17) pass through the adjacent fixing frames (18) and are slidably connected. The top end of the threaded rods (17) is fixed with a rotating wheel (19). The rotating wheel (19) is pressed into the adjacent fixing frame (18). The threaded rods (17) are fitted with springs (20). The two ends of the springs (20) are fixed to the adjacent fixing plates (16) and the adjacent fixing frames (18) respectively.

4. The guide rail straightness detection device according to claim 3, characterized in that: The fixed correction structure includes two clamping members (21), and the support plate (8) is provided with two sliding grooves. The two clamping members (21) are slidably connected in the two sliding grooves of the support plate (8). A spring three (22) is provided in the sliding groove of the support plate (8). The two ends of the spring three (22) are fixedly connected to the clamping member (21) and the support plate (8) respectively.

5. The guide rail straightness detection device according to claim 4, characterized in that: The clamping member (21) is fixedly connected to a connecting plate (23), the support plate (8) is fixedly connected to two guide rings (24), the connecting plate (23) is fixedly connected to a pull rope (25), the pull rope (25) passes through the adjacent guide rings (24), the outside of the column (9) is provided with threads, the column (9) is threadedly connected to a threaded sleeve (26), the lower side of the threaded sleeve (26) is rotatably connected to a rotating ring (27), and the two pull ropes (25) are fixedly connected to the rotating ring (27).

6. The guide rail straightness detection device according to claim 5, characterized in that: The support plate (8) is fixedly connected to two insert rods (28), and the outer wall of the guide shell (3) is fixedly connected to a correction block (29). The correction block (29) is provided with two blind holes, and the diameter of the blind holes of the correction block (29) is the same as the diameter of the insert rods (28).

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