Negative pressure adsorption positioning plate for verticality instrument

Abstract

The utility model discloses a negative pressure adsorption positioning plate for a verticality instrument, relates to the technical field of verticality instruments, and solves the problems that in the prior art, a positioning plate only can provide limited supporting stability and cannot effectively resist the gravity action of a measured piece, so that measured data is inaccurate. Comprising an air floating guide rail, L-shaped positioning plates are connected to the two ends of the air floating guide rail, a plurality of adsorption holes are evenly formed in the side walls, corresponding to the air floating guide rail, of the L-shaped positioning plates, pressure equalizing grooves are formed between the adsorption holes of the L-shaped positioning plates, and vacuum cavities are formed in the L-shaped positioning plates and communicate with negative air holes. The negative air hole is formed in the side wall of the L-shaped positioning plate; two fine adjustment assemblies are symmetrically arranged at the two ends of the bottom of the L-shaped positioning plate. A leveling assembly is arranged at the bottom of the positioning plate. The beneficial effects are that displacement and shaking of the L-shaped positioning plate in the detection process can be effectively avoided, and the accuracy and reliability of measurement are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of verticality meter technology, specifically to a negative pressure adsorption positioning plate for a verticality meter. Background Technology

[0002] In modern industrial manufacturing, accurate measurement and positioning of various workpieces are crucial. Perpendicularity measurement, as a key indicator, ensures the assembly accuracy of parts and is widely used in many industries such as machining, aerospace, and automobile manufacturing.

[0003] Traditional perpendicularity measurement methods typically rely on the relative positional relationship between the perpendicularity gauge and the workpiece being measured. In practice, an L-shaped positioning plate is often used to fix the workpiece, thereby achieving parallel alignment between the workpiece and the perpendicularity gauge to obtain accurate measurement data. However, when the workpiece is heavy, the L-shaped positioning plate can only provide limited support stability and cannot effectively resist the gravity of the workpiece. Consequently, the workpiece cannot be accurately positioned and may even shift, making it impossible to maintain the ideal state of perfect parallelism between the workpiece and the perpendicularity gauge, leading to inaccurate measurement data. In high-precision manufacturing industries, components installed based on inaccurate measurement data may experience poor fit and accelerated wear.

[0004] Therefore, this invention proposes a negative pressure adsorption positioning plate for a verticality meter to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a negative pressure adsorption positioning plate for a verticality meter, which solves the problem that the positioning plate in the prior art can only provide limited support stability and cannot effectively resist the gravity of the measured object, resulting in inaccurate measurement data.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A negative pressure adsorption positioning plate for a verticality meter includes an air-float guide rail. L-shaped positioning plates are connected to both ends of the air-float guide rail. Multiple adsorption holes are evenly distributed on the sidewalls of the L-shaped positioning plates corresponding to the sidewalls of the air-float guide rail. Pressure equalization grooves are formed between the adsorption holes of the L-shaped positioning plates. A vacuum chamber is formed inside the L-shaped positioning plates, and the vacuum chamber communicates with a negative pressure port located on the sidewall of the L-shaped positioning plates. Two sets of fine-tuning components are symmetrically arranged at both ends of the bottom of the L-shaped positioning plates. These fine-tuning components are connected to the ends of the air-float guide rail and include a fine-tuning plate and a fixing plate. The plate is threadedly connected to the second lead screw, which is rotatably connected to the fixed plate. A leveling assembly is provided at the bottom of the positioning plate, and the leveling assembly is connected to the end of the air-bearing guide rail. The leveling assembly includes a connecting seat, a slide rail is connected to the connecting seat, a slider is slidably connected to the slide rail, a first lead screw is threadedly connected to the slider, the first lead screw is rotatably connected to the connecting seat, a first handwheel is provided at the end of the first lead screw, a connecting plate is vertically connected to the slider, and a dial indicator is connected to the connecting plate through an adjustable rod. The dial indicator is in contact with the bottom of the L-shaped positioning plate.

[0008] By adopting the above technical solution, displacement and shaking of the workpiece during the positioning process can be effectively avoided, greatly improving the accuracy and reliability of the measurement.

[0009] Furthermore, the connecting seat is slidably connected to the end of the air-bearing guide rail, and the end of the air-bearing guide rail is provided with a sliding groove corresponding to the connecting seat.

[0010] By adopting the above technical solution, the position of the connecting seat can be adjusted according to the L-shaped positioning plate, while the slide groove ensures the perpendicularity between the connecting seat and the air-bearing guide rail.

[0011] Furthermore, the adjustable rod includes a first connecting rod and a second connecting rod. The first connecting rod is connected to the second connecting rod via a first locking buckle. The end of the first connecting rod is connected to the connecting plate via a positioning bolt. The connecting plate has a slotted groove corresponding to the positioning bolt. The end of the second connecting rod is connected to the dial indicator via a second locking buckle.

[0012] By adopting the above technical solution, the position of the dial indicator can be flexibly adjusted, which facilitates accurate measurement of the flatness deviation of the L-shaped positioning plate.

[0013] Furthermore, the bottom of the air-bearing guide rail is evenly connected with multiple support legs, each support leg is internally threaded with a support rod, the support rod is connected with a nut, the support rod is rotatably connected to a shock-absorbing pad, and the shock-absorbing pad is longitudinally slidably connected to the support leg; a level is connected to the bottom of the air-bearing guide rail.

[0014] By adopting the above technical solution, the height of the support rod can be adjusted to adapt to different working planes. At the same time, the shock-absorbing pad can effectively reduce the impact of external vibration on verticality detection, ensuring the stability of the verticality detection process.

[0015] Furthermore, a scale is provided on the outer side of the support rod.

[0016] By adopting the above technical solution, the height of each support leg can be adjusted by referring to the scale on the outside of the support rod.

[0017] Furthermore, a sealing groove is provided on the periphery of the adsorption hole, and a sealing ring is provided in the sealing groove.

[0018] By adopting the above technical solution, the pressure equalization groove can help the air pressure between each adsorption hole to be evenly distributed, and the sealing ring can enhance the airtightness at the adsorption hole and ensure the negative pressure adsorption effect.

[0019] Furthermore, the surface of the L-shaped positioning plate is coated with an antistatic coating, which is an epoxy resin-based material.

[0020] By adopting the above technical solution, it is possible to prevent the adsorption phenomenon caused by static electricity during the measurement process and prevent the interference of static electricity from damaging the tested item.

[0021] Furthermore, the end of the air-bearing guide rail is connected to a protective edge, which corresponds to the L-shaped positioning plate.

[0022] By adopting the above technical solution, the test piece can be limited to prevent it from accidentally slipping.

[0023] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] The fine-tuning component of this invention can provide accurate initial positioning for the L-shaped positioning plate, effectively preventing displacement and shaking of the L-shaped positioning plate during the testing process. The L-shaped positioning plate can be firmly attached to the air-bearing guide rail, and then the dial indicator can contact the bottom of the L-shaped positioning plate to accurately measure the flatness deviation of the L-shaped positioning plate, achieving leveling and greatly improving the accuracy and reliability of the measurement. Attached Figure Description

[0025] Figure 1 This is a vertical schematic diagram of the present invention;

[0026] Figure 2 for Figure 1 A magnified view of part A;

[0027] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0028] Figure 4 for Figure 3 A magnified view of part B;

[0029] Figure 5 This is the front view of the present invention;

[0030] Figure 6 for Figure 5 A magnified view of part D;

[0031] Figure 7 for Figure 5 A magnified view of part C;

[0032] Figure 8 This is the left view of the present invention;

[0033] Figure 9 for Figure 8 A magnified view of part E;

[0034] In the diagram: 1. Air-bearing guide rail; 2. Protective edge; 3. L-shaped positioning plate; 4. Adsorption hole; 5. Pressure equalizing groove; 6. Negative air hole; 7. Fine-tuning plate; 8. Fixing plate; 9. Second lead screw; 10. Connecting seat; 11. Slide groove; 12. Slide rail; 13. Slider; 14. First lead screw; 15. First handwheel; 16. Connecting plate; 17. Dial indicator; 18. Adjustable rod; 19. First connecting rod; 20. Second connecting rod; 21. First locking buckle; 22. Positioning bolt; 23. Waist-shaped groove; 24. Second locking buckle; 25. Support leg; 26. Support rod; 27. Nut; 28. Shock-absorbing pad; 29. ​​Level; 30. Scale; 31. Sealing groove; 32. Sealing ring. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] A negative pressure adsorption positioning plate for a verticality meter includes an air-float guide rail 1, with L-shaped positioning plates 3 connected to both ends of the air-float guide rail 1. Multiple adsorption holes 4 are evenly distributed on the sidewalls of the L-shaped positioning plates 3 corresponding to the sidewalls of the air-float guide rail 1. Pressure equalization grooves 5 are formed between the adsorption holes 4 of the L-shaped positioning plates 3. A vacuum chamber is formed inside the L-shaped positioning plates 3, communicating with negative air holes 6 located on the sidewalls of the L-shaped positioning plates 3. This design securely adsorbs the L-shaped positioning plates 3 onto the air-float guide rail 1, ensuring the stability of the L-shaped positioning plates 3, preventing positional shifts, and improving the accuracy of subsequent verticality testing. The surface of the L-shaped positioning plates 3 is coated with an antistatic coating made of epoxy resin. Sealing grooves 31 are formed around the adsorption holes 4, and sealing rings 32 are installed within the sealing grooves 31. A protective edge 2 is connected to the end of the air-float guide rail 1, corresponding to the L-shaped positioning plates 3.

[0038] Multiple support legs 25 are evenly connected to the bottom of the air-bearing guide rail 1. Support rods 26 are internally threaded onto the support legs 25, and nuts 27 are connected to the support rods 26. The support rods 26 are rotatably connected to the shock-absorbing pads 28, and the shock-absorbing pads 28 are longitudinally slidably connected to the support legs 25. A level 29 is connected to the bottom of the air-bearing guide rail 1. A scale 30 is provided on the outer side of the support rods 26. The air-bearing guide rail 1 is then placed in the working area. The nuts 27 are rotated, causing the support rods 26, internally threaded onto the support legs 25, to slide longitudinally. The height of each support leg 25 is adjusted according to the scale 30 on the outer side of the support rod 26, while simultaneously ensuring it is level by referring to the level 29.

[0039] Two sets of fine-tuning components are symmetrically arranged at both ends of the bottom of the L-shaped positioning plate 3. These components are connected to the ends of the air-bearing guide rail 1. Each fine-tuning component includes a fine-tuning plate 7 and a fixing plate 8. The fine-tuning plate 7 is threadedly connected to the second lead screw 9, which is rotatably connected to the fixing plate 8. A leveling component is also provided at the bottom of the positioning plate, connected to the ends of the air-bearing guide rail 1. The L-shaped positioning plate 3 is then installed using these fine-tuning components. Air is then drawn into the vacuum chamber inside the L-shaped positioning plate 3 through the negative air hole 6, creating a negative pressure within the chamber. This creates a connection between the vacuum chamber and the adsorption hole 4. Under this negative pressure, outside air is drawn into the vacuum chamber through the adsorption hole 4, and the negative pressure adsorption force adheres the L-shaped positioning plate 3 to the air-bearing guide rail 1. Rotating the second lead screw 9 allows for fine adjustment of the L-shaped positioning plate 3's position, causing the fine-tuning plate 7 to shift relative to the fixing plate 8, thus precisely adjusting the position of the L-shaped positioning plate 3. This enables more precise leveling operations and improves the overall positioning accuracy of the L-shaped positioning plate 3.

[0040] The leveling assembly includes a connecting seat 10, a slide rail 12 connected to the connecting seat 10, a slider 13 slidably connected to the slide rail 12, a first lead screw 14 threadedly connected to the slider 13, the first lead screw 14 being rotatably connected to the connecting seat 10, a first handwheel 15 being provided at the end of the first lead screw 14, a connecting plate 16 vertically connected to the slider 13, and a dial indicator 17 connected to the connecting plate 16 via an adjustable rod 18, the dial indicator 17 being in contact with the bottom of the L-shaped positioning plate 3. The connecting seat 10 is slidably connected to the end of the air-bearing guide rail 1, and the end of the air-bearing guide rail 1 has a groove 11 corresponding to the connecting seat 10. The adjustable rod 18 includes a first connecting rod 19 and a second connecting rod 20. The first connecting rod 19 is connected to the second connecting rod 20 via a first locking buckle 21. The end of the first connecting rod 19 is connected to the connecting plate 16 via a positioning bolt 22. The connecting plate 16 has a slot 23 corresponding to the positioning bolt 22. The end of the second connecting rod 20 is connected to the dial indicator 17 via a second locking buckle 24. Leveling is then achieved through a leveling assembly. First, the first lead screw 14 is rotated by the first handwheel 15. The first lead screw 14 is rotatably connected to the connecting seat 10, which in turn drives the slider 13 to slide on the slide rail 12. The slider 13 then moves the vertically connected connecting plate 16, causing the dial indicator 17 connected via the adjustable rod 18 to move accordingly. The dial indicator 17 contacts the bottom of the L-shaped positioning plate 3, accurately measuring the flatness deviation of the L-shaped positioning plate 3, thus achieving leveling.

[0041] The working process of this utility model is as follows:

[0042] First, place the air-bearing guide rail 1 in the working area, then rotate the nut 27, and the support rod 26 connected to the internal thread of the support leg 25 slides longitudinally. Then, adjust the height of each support leg 25 according to the scale 30 on the outside of the support rod 26, and at the same time, make it horizontal by referring to the level 29.

[0043] The L-shaped positioning plate 3 is then installed using the fine-tuning assembly. Air is then evacuated from the vacuum chamber inside the L-shaped positioning plate 3 through the negative air hole 6, creating a negative pressure within the chamber. This vacuum chamber connects to the adsorption hole 4, allowing outside air to be drawn into it through the adsorption hole 4 under the negative pressure. The negative pressure adsorption force then adheres the L-shaped positioning plate 3 to the air-bearing guide rail 1. The second lead screw 9 is then rotated to finely adjust the position of the L-shaped positioning plate 3, causing the fine-tuning plate 7 to shift relative to the fixed plate 8, thus precisely adjusting the position of the L-shaped positioning plate 3.

[0044] Leveling is then achieved using a leveling assembly. First, the first lead screw 14 is rotated by the first handwheel 15. The first lead screw 14 is rotatably connected to the connecting seat 10, which in turn causes the slider 13 to slide on the slide rail 12. The slider 13 then moves the vertically connected connecting plate 16, which in turn moves the dial indicator 17 connected to the adjustable rod 18. The dial indicator 17 contacts the bottom of the L-shaped positioning plate 3, accurately measuring the flatness deviation of the L-shaped positioning plate 3 to achieve leveling. If there is a flatness deviation in the L-shaped positioning plate 3, the second lead screw 9 is rotated to finely adjust the position of the L-shaped positioning plate 3.

Claims

1. A negative pressure adsorption positioning plate for a verticality meter, comprising an air-floating guide rail (1), characterized in that, Both ends of the air flotation guide rail (1) are connected to L-shaped positioning plates (3). The L-shaped positioning plates (3) are evenly provided with multiple adsorption holes (4) on the side wall of the air flotation guide rail (1). A pressure equalization groove (5) is provided between the adsorption holes (4) of the L-shaped positioning plates (3). A vacuum chamber is provided inside the L-shaped positioning plates (3). The vacuum chamber is connected to a negative air hole (6). The negative air hole (6) is provided on the side wall of the L-shaped positioning plates (3). Two sets of fine-tuning components are symmetrically arranged at both ends of the bottom of the L-shaped positioning plate (3). The fine-tuning components are connected to the end of the air-bearing guide rail (1). The fine-tuning components include a fine-tuning plate (7) and a fixing plate (8). The fine-tuning plate (7) is threadedly connected to the second lead screw (9), and the second lead screw (9) is rotatably connected to the fixing plate (8). The bottom of the positioning plate is provided with a leveling component, which is connected to the end of the air-bearing guide rail (1). The leveling component includes a connecting seat (10), a slide rail (12) is connected to the connecting seat (10), a slider (13) is slidably connected to the slide rail (12), a first lead screw (14) is threadedly connected to the slider (13), the first lead screw (14) is rotatably connected to the connecting seat (10), a first handwheel (15) is provided at the end of the first lead screw (14), a connecting plate (16) is vertically connected to the slider (13), and a dial indicator (17) is connected to the connecting plate (16) through an adjustable rod (18). The dial indicator (17) is in contact with the bottom of the L-shaped positioning plate (3).

2. The negative pressure adsorption positioning plate for a verticality meter according to claim 1, characterized in that, The connecting seat (10) is slidably connected to the end of the air-bearing guide rail (1), and the end of the air-bearing guide rail (1) is provided with a sliding groove (11) corresponding to the connecting seat (10).

3. The negative pressure adsorption positioning plate for a verticality meter according to claim 2, characterized in that, The adjustable rod (18) includes a first connecting rod (19) and a second connecting rod (20). The first connecting rod (19) is connected to the second connecting rod (20) through a first locking buckle (21). The end of the first connecting rod (19) is connected to the connecting plate (16) through a positioning bolt (22). The connecting plate (16) has a waist-shaped groove (23) corresponding to the positioning bolt (22). The end of the second connecting rod (20) is connected to the dial indicator (17) through a second locking buckle (24).

4. A negative pressure adsorption positioning plate for a verticality meter according to claim 1, characterized in that, The bottom of the air-bearing guide rail (1) is evenly connected with multiple support legs (25), and the support legs (25) are internally threaded with support rods (26). Nuts (27) are connected to the support rods (26), and the support rods (26) are rotatably connected to the shock-absorbing pads (28). The shock-absorbing pads (28) are longitudinally slidably connected to the support legs (25). A level (29) is connected to the bottom of the air-bearing guide rail (1).

5. A negative pressure adsorption positioning plate for a verticality meter according to claim 4, characterized in that, A scale (30) is provided on the outside of the support rod (26).

6. A negative pressure adsorption positioning plate for a verticality meter according to claim 1, characterized in that, A sealing groove (31) is provided on the periphery of the adsorption hole (4), and a sealing ring (32) is provided in the sealing groove (31).

7. A negative pressure adsorption positioning plate for a verticality meter according to claim 6, characterized in that, The surface of the L-shaped positioning plate (3) is coated with an antistatic coating, which is an epoxy resin-based material.

8. A negative pressure adsorption positioning plate for a verticality meter according to claim 7, characterized in that, The end of the air-bearing guide rail (1) is connected to a protective edge (2), which corresponds to the L-shaped positioning plate (3).

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