Plane measuring tool

Abstract

The utility model discloses a plane measuring tool, which comprises a supporting assembly, a movable seat, a detection assembly and a driving mechanism, and is characterized in that the supporting assembly comprises a first mounting seat, a second mounting seat and a guide piece, and the guide piece is respectively connected with the first mounting seat and the second mounting seat; the moving seat is slidably arranged on the guide piece; the detection assembly comprises a flatness measuring instrument which is movably arranged on the moving seat; the driving mechanism can drive the flatness measuring instrument to move relative to the battery lower box body, during working, the first mounting base and the second mounting base can be arranged on the two side edges of the battery lower box body respectively, the flatness measuring instrument is driven through the driving mechanism, the measuring end of the flatness measuring instrument is made to abut against the box body plane part of the battery lower box body, and the measuring value of the flatness measuring instrument is obtained. The flatness measuring instrument is translated through the guiding piece, measured values of different positions of the battery lower box body are obtained, measurement is repeated for multiple times, flatness measurement of the battery lower box body can be completed, the measurement speed is higher compared with a traditional measurement means, and the measurement efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the field of battery production and processing, in particular to a plane measuring tool. Background Art

[0002] With the rapid development of the new energy electric vehicle industry, market demand for aluminum alloy lower housings continues to grow. To meet this market demand and improve production efficiency, we evaluated and improved existing measurement methods. Currently, we use a coordinate measuring machine (CMM) to measure the flatness of the lower housing floor. Although CMMs offer advantages in accuracy, their measurement efficiency is low and the process is time-consuming, impacting overall production efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a plane measurement tool that can improve the measurement efficiency of the battery lower box.

[0004] According to the plane measuring tool of the first aspect embodiment of the present utility model, it includes a support assembly, a movable seat, a detection assembly and a driving mechanism, the support assembly includes a first mounting seat, a second mounting seat and a guide member, the first mounting seat and the second mounting seat can be respectively placed on the two side edges of the battery lower box, the guide member is respectively connected to the first mounting seat and the second mounting seat; the movable seat can be slidably arranged on the guide member; the detection assembly includes a flatness measuring instrument movably arranged on the movable seat; the driving mechanism can drive the flatness measuring instrument to move relative to the battery lower box.

[0005] The plane measuring tool according to the embodiment of the utility model has at least the following beneficial effects: when in operation, the first mounting seat and the second mounting seat can be respectively placed on the two side edges of the lower battery box, and the flatness measuring instrument is driven by the driving mechanism so that its measuring end abuts against the flat part of the box of the lower battery box, and the measurement value of the flatness measuring instrument is obtained. The flatness measuring instrument is translated by the guide member to obtain the measurement values of different positions of the lower battery box. The measurement is repeated multiple times to complete the flatness measurement of the lower battery box. The measurement speed is faster than that of traditional measurement methods, and the measurement efficiency is higher.

[0006] According to some embodiments of the present invention, the guide member is connected to the first mounting seat and / or the second mounting seat through a slidable structure.

[0007] According to some embodiments of the present invention, the first mounting seat and the second mounting seat are respectively provided with mounting holes for the guide member to penetrate and move, and the first mounting seat and the second mounting seat are respectively equipped with fastening mechanisms capable of fastening the guide member to the mounting holes.

[0008] According to some embodiments of the present invention, the fastening mechanism is a fastening screw provided on the first mounting seat and the second mounting seat, and the end of the fastening screw can be inserted into the mounting hole to press the guide member.

[0009] According to some embodiments of the present invention, the first mounting seat and the second mounting seat are respectively provided with mounting holes for the guide member to penetrate and move, and the cross-section of the mounting hole is larger than the profile of the guide member so that the guide member can move in the radial direction of the mounting hole. The first mounting seat and the second mounting seat are configured with an adjustment mechanism capable of adjusting the position of the guide member in the radial direction of the mounting hole.

[0010] According to some embodiments of the present invention, the adjustment mechanism includes adjustment screws provided on the first mounting seat and the second mounting seat, and the guide member can be pushed to move in the radial direction of the mounting hole by rotating the adjustment screws.

[0011] According to some embodiments of the present invention, the detection component also includes a lifting platform, the flatness measuring instrument is arranged on the lifting platform, and the lifting platform can be slidably set on the movable seat through a slide rail mechanism, and the slide rail mechanism can drive the lifting platform to move in the up and down directions.

[0012] According to some embodiments of the present invention, the driving mechanism includes a handwheel and a driving screw connected to the handwheel, the movable seat is provided with a connecting portion threadedly engaged with the driving screw, and the lower end of the driving screw is movably connected to the lifting platform.

[0013] According to some embodiments of the present invention, a clamping portion is provided at the lower end of the driving screw, and the lifting platform is provided with a U-shaped groove into which the clamping portion can be clamped.

[0014] According to some embodiments of the present invention, a damping mechanism is provided between the lifting platform and the moving seat.

[0015] According to some embodiments of the present invention, the lifting platform is provided with an elongated hole extending in the up and down directions, the movable seat is configured with a threaded hole corresponding to the elongated hole, and the damping mechanism includes a damping screw, which passes through the elongated hole and is connected to the threaded hole.

[0016] According to some embodiments of the present invention, the movable seat is provided with a guide hole for the guide member to pass through, and at least one inner wall of the guide hole is provided with a roller that abuts against the guide member.

[0017] According to some embodiments of the present invention, the upper inner wall and / or lower inner wall of the guide hole are provided with rollers abutting against the guide member, and the front inner wall and / or rear inner wall of the guide hole are provided with abutting members capable of abutting against the guide member.

[0018] According to some embodiments of the present invention, the abutment member is a round head screw, and the front and / or rear of the movable seat are provided with a threaded through hole that can cooperate with the thread of the round head screw and penetrate into the guide hole, and the end of the round head screw corresponding to the guide hole is a ball head structure.

[0019] According to some embodiments of the present invention, a wear-resistant layer is provided on the front and / or rear of the guide member.

[0020] According to some embodiments of the present invention, the flatness measuring instrument is equipped with a display module.

[0021] According to some embodiments of the present invention, the flatness measuring instrument is a micrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the plane measurement tooling of the embodiment of the utility model when in use;

[0024] Figure 2 This is a schematic structural diagram of a plane measurement tool according to an embodiment of the present utility model;

[0025] Figure 3 This is an exploded schematic diagram of a plane measurement tool according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the installation portion of the flatness measuring instrument according to an embodiment of the present utility model;

[0027] Figure 5 This is an exploded schematic diagram of the installation portion of the flatness measuring instrument according to an embodiment of the present utility model;

[0028] Figure 6 This is a schematic structural diagram of the first mounting base of an embodiment of the present utility model configured with rotatable legs;

[0029] Figure 7 This is a structural diagram of the first mounting base of an embodiment of the utility model when an adjusting screw is configured.

[0030] Reference numerals:

[0031] First mounting seat 110, mounting hole 111, fastening screw 112, second mounting seat 120, support foot 121, adjustment screw 122, guide member 130;

[0032] The movable base 200, the guide hole 201, the threaded through hole 202, the threaded hole 203, the roller 210, the round head screw 220, and the connecting portion 230;

[0033] Flatness measuring instrument 310, lifting platform 320, elongated hole 321, U-shaped slot 322, damping screw 330;

[0034] Hand wheel 410, driving screw 420, clamping part 421,

[0035] Battery lower box 900. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Reference below Figures 1 to 5 A plane measuring tool according to an embodiment of the present invention is described.

[0041] like Figures 1 to 3As shown, the plane measuring tool according to the embodiment of the utility model includes a support assembly, a movable seat 200, a detection assembly and a driving mechanism. The support assembly includes a first mounting seat 110, a second mounting seat 120 and a guide member 130. The first mounting seat 110 and the second mounting seat 120 can be placed on the two side edges of the lower battery box 900 respectively, and the guide member 130 is respectively connected to the first mounting seat 110 and the second mounting seat 120; the movable seat 200 can be slidably set on the guide member 130; the detection assembly includes a flatness measuring instrument 310 movably set on the movable seat 200; the driving mechanism can drive the flatness measuring instrument 310 to move relative to the lower battery box 900.

[0042] During operation, the first mounting seat 110 and the second mounting seat 120 can be placed on the two side edges of the lower battery box 900 respectively. The flatness measuring instrument 310 is driven by the driving mechanism so that its measuring end abuts against the flat part of the box 900 of the battery, and the measurement value of the flatness measuring instrument 310 is obtained. The flatness measuring instrument 310 is translated by the guide member 130 to obtain the measurement values of different positions of the lower battery box 900. The measurement is repeated multiple times to complete the flatness measurement of the lower battery box 900. The measurement speed is faster than that of traditional measurement methods, and the measurement efficiency is higher.

[0043] Specifically, such as Figure 1 As shown, by translating the flatness measuring instrument 310 through the guide 130, the flatness measurement of multiple positions in the left and right directions of the lower battery case 900 can be completed. By placing the first mounting seat 110 and the second mounting seat 120 at different front and rear positions, the flatness measurement of multiple positions in the front and rear directions of the lower battery case 900 can be completed, thereby realizing the flatness detection of the lower battery case 900.

[0044] In some embodiments of the present invention, the guide member 130 is connected to the first mounting seat 110 and / or the second mounting seat 120 through a sliding structure. The sliding structure can be used to adjust the distance between the first mounting seat 110 and the second mounting seat 120, that is, to adjust the actual span of the guide member 130, so that it can adapt to battery lower boxes 900 of different specifications, thereby improving versatility.

[0045] like Figure 2 、 Figure 3As shown, in some embodiments of the present invention, the first mounting seat 110 and the second mounting seat 120 are respectively provided with a mounting hole 111 for the guide member 130 to penetrate and move, and the first mounting seat 110 and the second mounting seat 120 are respectively equipped with a fastening mechanism that can fasten the guide member 130 in the mounting hole 111. Through the cooperation between the guide member 130 and the mounting hole 111, the relative position of the guide member 130 and the first mounting seat 110 and the second mounting seat 120 can be adjusted, so that it can adapt to battery lower boxes 900 of different specifications, thereby improving versatility.

[0046] Specifically, through the cooperation between the guide member 130 and the mounting hole 111 and the locking of the fastening mechanism, the plane measurement tool can have different spans, which can meet the flatness measurement requirements of battery lower boxes 900 of different sizes.

[0047] like Figure 2 、 Figure 3 As shown, in some embodiments of the present invention, the fastening mechanism is a fastening screw 112 provided on the first mounting seat 110 and the second mounting seat 120. The end of the fastening screw 112 can be inserted into the mounting hole 111 to press against the guide member 130, thereby achieving the fixation of the guide member 130, thereby improving the measurement accuracy.

[0048] It can be understood that in some embodiments of the present invention, the fastening mechanism can also be a cam mechanism rotatably arranged on the first mounting seat 110 and the second mounting seat 120, and by rotating the cam mechanism, different positions of the cam are abutted against the guide member 130, thereby achieving the purpose of fastening or loosening the guide member 130.

[0049] In some embodiments of the present invention, the lower legs of the first mounting seat 110 and the second mounting seat 120 correspond to the side edges of the battery lower box 900 in a square or runway-shaped structure to improve the placement stability of the first mounting seat 110 and the second mounting seat 120.

[0050] like Figure 6 As shown, in some embodiments of the present invention, the first mounting seat 110 and the second mounting seat 120 (not shown in the figure, with a structure similar to the first mounting seat 110) are respectively provided with rotatable legs 121. By rotating the legs 121, the first mounting seat 110 and the second mounting seat 120 can be adapted to the corner positions, so that the plane measuring tool can be set up at the corner positions of the battery lower box 900 to realize the flatness detection of the corner positions.

[0051] Specifically, the rotatable support leg 121 is a long structure, which has a high degree of fit with the side edge of the lower battery box 900, thereby improving stability. When it is necessary to perform flatness detection at the corner position, the angle in the length direction of the support leg 121 of the first mounting seat 110 and the second mounting seat 120 is rotated to correspond to the corner angle of the lower battery box 900, and the first mounting seat 110 and the second mounting seat 120 can be placed at the corner position of the lower battery box 900. The adjustable structure of the guide member 130 and the first mounting seat 110 and the second mounting seat 120 can meet the flatness detection of different corner positions and meet different usage requirements, with high versatility.

[0052] In some embodiments of the present invention, when the plane measuring tool is placed on the battery lower box 900, the guide member 130 is in a horizontal state to ensure the accuracy of the flatness measuring instrument 310 during movement measurement and the consistency of relative measurement data.

[0053] like Figure 7 As shown, in some embodiments of the present invention, the first mounting seat 110 and the second mounting seat 120 (not shown in the figure, with a structure similar to the first mounting seat 110) are respectively provided with a mounting hole 111 for the guide member 130 to penetrate and move, and the cross-section of the mounting hole 111 is larger than the outline of the guide member 130, so that the guide member 130 can move in the radial direction of the mounting hole 111. The first mounting seat 110 and the second mounting seat 120 are configured with an adjustment mechanism that can adjust the position of the guide member 130 in the radial direction of the mounting hole 111. The radial position of the guide member 130 in different mounting holes 111 is adjusted by the adjustment mechanism, so that the guide member 130 can be adjusted to a horizontal position to meet the measurement requirements.

[0054] like Figure 7 As shown, in some embodiments of the present invention, the adjustment mechanism includes an adjusting screw 122 provided on the first mounting seat 110 and the second mounting seat 120. By rotating the adjusting screw 122, the guide member 130 can be pushed to move in the radial direction of the mounting hole 111, thereby satisfying the adjustment of the horizontal position of the guide member 130.

[0055] In some embodiments of the present invention, the cross-section of the mounting hole 111 is a square structure, and the four side walls of the mounting hole 111 are respectively provided with adjustment screws 122. The position of the guide member 130 can be adjusted from the up and down, front and back directions at the first mounting seat 110 and the second mounting seat 120, thereby achieving the adjustment of the horizontal position of the guide member 130.

[0056] In some embodiments of the present invention, a level ruler is provided on the guide member 130 to facilitate the user to adjust the guide member 130 .

[0057] like Figure 4 、 Figure 5As shown, in some embodiments of the present invention, the detection component also includes a lifting platform 320, and the flatness measuring instrument 310 is arranged on the lifting platform 320. The lifting platform 320 can be slidably set on the movable seat 200 through a slide rail mechanism. The slide rail mechanism can drive the lifting platform 320 to move in the up and down directions. The driving mechanism is connected to the lifting platform 320, thereby realizing the lifting and lowering movement of the flatness measuring instrument 310.

[0058] It is understandable that in some embodiments of the present invention, the flatness measuring instrument 310 may also be directly connected to the driving mechanism, which will not be described in detail here.

[0059] like Figure 4 、 Figure 5 As shown, in some embodiments of the present invention, the driving mechanism includes a handwheel 410 and a driving screw 420 connected to the handwheel 410, the movable base 200 is provided with a connecting portion 230 threadedly engaged with the driving screw 420, the lower end of the driving screw 420 is movably connected to the lifting platform 320, and the position of the flatness measuring instrument 310 can be adjusted by rotating the handwheel 410.

[0060] In specific applications, by rotating the handwheel 410, the measuring end of the flatness measuring instrument 310 is brought into contact with the flat surface of the battery lower box 900. By properly controlling the handwheel 410, a suitable contact force is maintained to avoid damage to the flatness measuring instrument 310.

[0061] like Figure 5 As shown, in some embodiments of the present invention, a clamping portion 421 is provided at the lower end of the driving screw 420, and the lifting platform 320 is provided with a U-shaped groove 322 for the clamping portion 421 to be clamped, thereby realizing a movable connection between the lower end of the driving screw 420 and the lifting platform 320. When the driving screw 420 rotates, it does not drive the lifting platform 320 to rotate, but can drive the lifting platform 320 to move in the up and down directions.

[0062] It can be understood that in some embodiments of the present invention, the driving mechanism can also be a cam mechanism, which can press and drive the lifting platform 320 to different height positions by rotating the cam. A reset spring is set between the lifting platform 320 and the movable seat 200, so that when the cam mechanism does not press the lifting platform 320, the lifting platform 320 can automatically reset to a higher position, thereby meeting the height position adjustment requirements of the flatness measuring instrument 310.

[0063] In some embodiments of the present invention, a damping mechanism is provided between the lifting platform 320 and the movable base 200 to improve the stability of the lifting platform 320 during movement or positioning.

[0064] Specifically, the damping mechanism makes it difficult for the lifting platform 320 to shake when it moves or is positioned, thereby improving the stability of the flatness measuring instrument 310.

[0065] like Figure 4 、 Figure 5 As shown, in some embodiments of the present invention, the lifting platform 320 is provided with an elongated hole 321 extending in the up-down direction, and the moving seat 200 is provided with a threaded hole 203 corresponding to the elongated hole 321. The damping mechanism includes a damping screw 330, and the damping screw 330 passes through the elongated hole 321 and is connected to the threaded hole 203. By tightening the damping screw 330 to a set depth, a certain abutment force is formed between the lifting platform 320 and the moving seat 200, increasing the friction force, thereby achieving a damping effect, and the friction force between the lifting platform 320 and the moving seat 200 can be adjusted by rotating the damping screw 330 to achieve adjustment of the damping force to meet different usage requirements.

[0066] In some embodiments of the present invention, when the lifting platform 320 moves to the set position, the damping screw 330 can be tightened to fix the lifting platform 320 on the moving base 200. During the subsequent movement process, the flatness measuring instrument 310 is not easily displaced, thereby enabling the flatness measuring instrument 310 to achieve higher detection accuracy.

[0067] It is understandable that in some embodiments of the present invention, the damping mechanism may also be a damping friction plate provided on the lifting platform 320 and the moving base 200 , which may also achieve the effect of increasing the damping force.

[0068] like Figure 4 、 Figure 5 As shown, in some embodiments of the present invention, the movable seat 200 is provided with a guide hole 201 for the guide member 130 to pass through, and at least one inner wall of the guide hole 201 is provided with a roller 210 abutting against the guide member 130 to reduce the movement resistance of the movable seat 200 and improve the smoothness of movement.

[0069] like Figure 4 、 Figure 5 As shown, in some embodiments of the present invention, the upper inner wall and / or lower inner wall of the guide hole 201 are provided with a roller 210 that abuts against the guide member 130, and the front inner wall and / or rear inner wall of the guide hole 201 are provided with an abutment member that can abut against the guide member 130 to improve the smoothness of the movement of the movable seat 200.

[0070] like Figure 4 、 Figure 5 As shown, in some embodiments of the present invention, the upper inner wall and the lower inner wall of the guide hole 201 are provided with rollers 210 that abut against the guide member 130 to position the movable base 200 in the vertical direction.

[0071] like Figure 4 、 Figure 5As shown, in some embodiments of the present invention, the abutment is a round head screw 220, and the front and / or rear of the movable seat 200 are provided with a threaded through hole 202 that can be threadedly matched with the round head screw 220 and penetrates into the guide hole 201. The end of the round head screw 220 corresponding to the guide hole 201 is a ball head structure, and the ball head structure can abut against the guide member 130, reducing the forward and backward shaking of the movable seat 200, thereby improving the stability of the movement of the movable seat 200.

[0072] It can be understood that in some embodiments of the present invention, the abutment member can also be a marble mechanism, which utilizes the rolling performance and elastic abutment performance of the marble to improve the smoothness of the movement of the movable seat 200.

[0073] like Figure 5 As shown, in some embodiments of the present invention, the movable base 200 is a square structure formed by four plates connected by screws or the like, and a square guide hole 201 is formed in the middle thereof.

[0074] Of course, in the specific implementation process, the movable seat 200 can also be set to other shapes, such as a hexagonal or trapezoidal cross-section, which will not be described in detail here.

[0075] In some embodiments of the present invention, a wear-resistant layer is provided on the front and / or rear of the guide member 130 to reduce contact friction and wear with the abutment member.

[0076] In some embodiments of the present invention, the main body of the guide member 130 is a long steel bar with a square cross-section, and high-hardness wear-resistant plates, such as high-carbon steel plates, high-speed steel plates, etc., are respectively provided at the front and rear parts.

[0077] In some embodiments of the present invention, the flatness measuring instrument 310 is configured with a display module to facilitate user observation.

[0078] In some embodiments of the present invention, the flatness measuring instrument 310 is a micrometer, and a mechanical dial or a digital display of the micrometer serves as a display module.

[0079] The lower end of the measuring shaft of the micrometer is the measuring end. The measuring shaft of the micrometer is in contact with the lower battery box 900. The plane change of the lower battery box 900 is transmitted to the pointer or sensor of the micrometer through the measuring shaft via a lever mechanism or a gear mechanism, thereby obtaining the plane change of the lower battery box 900.

[0080] Of course, the invention of the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A plane measuring tool, characterized in that: include: A support assembly, the support assembly comprising a first mounting seat (110), a second mounting seat (120) and a guide member (130), wherein the first mounting seat (110) and the second mounting seat (120) can be respectively placed on two side edges of the battery lower box (900), and the guide member (130) is respectively connected to the first mounting seat (110) and the second mounting seat (120); A movable seat (200), wherein the movable seat (200) is slidably disposed on the guide member (130); A detection component, the detection component comprising a flatness measuring instrument (310) movably arranged on the movable seat (200); A driving mechanism capable of driving the flatness measuring instrument (310) to move relative to the battery lower box (900).

2. The plane measurement tool according to claim 1, characterized in that: The guide member (130) is connected to the first mounting seat (110) and / or the second mounting seat (120) through a slidable structure; the first mounting seat (110) and the second mounting seat (120) are respectively provided with a mounting hole (111) capable of allowing the guide member (130) to penetrate and move, and the first mounting seat (110) and the second mounting seat (120) are respectively equipped with a fastening mechanism capable of fastening the guide member (130) to the mounting hole (111).

3. The plane measurement tool according to claim 2, characterized in that: The fastening mechanism is a fastening screw (112) provided on the first mounting seat (110) and the second mounting seat (120), and the end of the fastening screw (112) can be inserted into the mounting hole (111) to press the guide member (130).

4. The plane measurement tool according to claim 1, characterized in that: The detection component further includes a lifting platform (320), the flatness measuring instrument (310) is arranged on the lifting platform (320), and the lifting platform (320) is slidably arranged on the movable seat (200) through a slide rail mechanism, and the slide rail mechanism can drive the lifting platform (320) to move in an up and down direction.

5. The plane measuring tool according to claim 4, characterized in that: The driving mechanism includes a hand wheel (410) and a driving screw (420) connected to the hand wheel (410); the movable seat (200) is provided with a connecting portion (230) threadedly engaged with the driving screw (420); and the lower end of the driving screw (420) is movably connected to the lifting platform (320).

6. The plane measurement tool according to claim 4, characterized in that: A damping mechanism is provided between the lifting platform (320) and the movable seat (200).

7. The plane measurement tool according to claim 6, characterized in that: The lifting platform (320) is provided with an elongated hole (321) extending in the up-down direction, the movable seat (200) is provided with a threaded hole (203) corresponding to the elongated hole (321), and the damping mechanism includes a damping screw (330), and the damping screw (330) passes through the elongated hole (321) and is connected to the threaded hole (203).

8. The plane measurement tool according to claim 1, characterized in that: The movable seat (200) is provided with a guide hole (201) capable of allowing the guide member (130) to penetrate therethrough, and at least one inner wall of the guide hole (201) is provided with a roller (210) abutting against the guide member (130).

9. The plane measuring tool according to claim 8, characterized in that: The upper inner wall and / or the lower inner wall of the guide hole (201) are provided with a roller (210) that abuts against the guide member (130), and the front inner wall and / or the rear inner wall of the guide hole (201) are provided with an abutment member capable of abutting against the guide member (130).

10. The plane measurement tool according to claim 1, characterized in that: The flatness measuring instrument (310) is a micrometer.

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