A manually fine-tuned air floating worktable

Abstract

The utility model relates to a manual fine adjustment air float workbench relates to air float workbench technical field, solves the problem that existing technology exists difficult to realize accurate displacement control, including granite air float table, be connected with positive gas interface and negative gas interface on granite air float table, the positive gas hole is opened in granite air float table inside corresponding positive gas interface, the negative gas hole is opened in granite air float table inside corresponding negative gas interface, the granite air float table upper layer is provided with granite fine adjustment table, granite fine adjustment table is connected with granite air float table sliding through cross roller guide rail, the screw rod seat is fixed on granite air float table, the fine adjustment screw rod is connected with screw rod seat internal thread, fine adjustment screw rod one end is connected with granite fine adjustment table rotation, and the other end is fixed with fine adjustment knob, granite air float table both sides symmetry is provided with two groups locking knob, beneficial effect is: can ensure that granite fine adjustment table moves along the line high accuracy, realizes high accuracy displacement.

Description

Technical Field

[0001] This utility model relates to the field of air flotation workbench technology, specifically a manually adjustable air flotation workbench. Background Technology

[0002] In the field of precision manufacturing, there are extremely high requirements for the motion accuracy, stability and ease of adjustment of the worktable. Traditional mechanical contact worktables are difficult to meet the needs of precision operation, while air-bearing worktables achieve non-contact motion by relying on gas static pressure support, which can effectively eliminate errors caused by mechanical friction, significantly improve motion stability and improve positioning accuracy, and have become a core component in high-precision equipment.

[0003] Currently, the fine-tuning function of air-bearing worktables mainly relies on electric drives or manual adjustment mechanisms. While electric fine-tuning can achieve automated control, it is complex in structure, expensive, and prone to losing its adjustment capability in the event of power failure or sudden malfunction, making it difficult to adapt to miniaturized, low-cost precision operation scenarios. Manual fine-tuning mechanisms are widely used in small and medium-sized precision equipment, but the adjustment accuracy is limited by the transmission mechanism, making it difficult to achieve precise displacement control.

[0004] Therefore, this utility model proposes a manually adjustable air flotation worktable to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a manually adjustable air-float worktable to solve the problem of difficulty in achieving precise displacement control in the prior art.

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

[0007] A manually adjustable air flotation workbench includes a granite air flotation platform. The granite air flotation platform is connected to a positive air inlet and a negative air inlet. Inside the granite air flotation platform, corresponding to the positive air inlet, are a positive pressure main air channel and a positive pressure branch air channel. The end of the positive pressure branch air channel is connected to a positive air hole. Inside the granite air flotation platform, corresponding to the negative air inlet, are a negative pressure main air channel and a negative pressure branch air channel. The end of the negative pressure branch air channel is connected to a negative air hole. An annular exhaust groove is formed on the bottom surface of the granite air flotation platform, surrounding the positive air hole. The depth of the annular exhaust groove is 0.05-0.1 mm. An air source switch is provided on the granite air flotation platform, and the air source switch is connected to the positive pressure main air channel.

[0008] The granite air flotation platform is provided with a granite fine-tuning platform on the upper layer. The granite fine-tuning platform is slidably connected to the granite air flotation platform through cross roller guides. A screw seat is fixed on the granite air flotation platform. A fine-tuning screw is internally threaded onto the screw seat. One end of the fine-tuning screw is rotatably connected to the granite fine-tuning platform, and the other end is fixed with a fine-tuning knob.

[0009] Two sets of locking knobs are symmetrically arranged on both sides of the granite air flotation platform. Each locking knob includes a screw part and a handle part. The screw part is threadedly connected to the granite air flotation platform, and the end of the screw part is set to abut against the granite fine-tuning platform.

[0010] Furthermore, both the positive and negative air inlets are connected to the air filter assembly, which is connected to the granite air flotation platform.

[0011] Furthermore, a dust cover is provided on the outer periphery of the cross roller guide rail, and the dust cover is detachably connected to the top surface of the granite air flotation platform.

[0012] Furthermore, the cross roller guide includes a guide seat and a slider. The guide seat is fixed to the top surface of the granite air flotation platform, and the slider is fixed to the bottom surface of the granite fine-tuning platform. A roller retainer is provided on the guide seat, and a precision roller is provided inside the roller retainer.

[0013] Furthermore, a disc spring is provided between the screw section and the granite fine-tuning stage, and the disc spring is connected to the end of the screw section.

[0014] Furthermore, the top surface of the granite air flotation platform is provided with a scale, and the top surface of the granite fine-tuning platform is provided with a pointer corresponding to the scale.

[0015] Furthermore, a friction damping plate is connected to the screw seat, and a connecting part is provided between the fine-tuning screw and the fine-tuning knob, with the outer peripheral surface of the connecting part in contact with the friction damping plate.

[0016] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model can enhance the overall anti-interference capability of the air flotation platform by the synergistic effect of positive and negative air pressure, with positive pressure forming an air film and negative pressure assisting adsorption. The annular exhaust groove stabilizes the air film thickness and eliminates friction interference from traditional mechanical contact. The precision rollers of the cross roller guide rail cooperate with the roller cage to ensure that the granite fine-tuning stage moves with high precision along a straight line, thus achieving high-precision displacement.

[0018] 2. During the rotation of the fine-tuning knob, the contact part and the friction damping plate of this utility model generate appropriate friction damping, which avoids excessive fine-tuning due to inertia. At the same time, the pointer of the granite fine-tuning stage moves with the displacement to correspond to the scale on the top surface of the air-floating platform, realizing real-time position quantitative monitoring.

[0019] 3. The disc spring of the locking mechanism of this utility model provides uniform locking force through elastic deformation, ensuring the stability of the fine adjustment table and avoiding rigid impact damage to the guide rail.

[0020] 4. The dust cover of this utility model can effectively isolate dust and impurities, avoid wear, maintain precision, and extend the service life of the cross roller guide. Attached Figure Description

[0021] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0023] Figure 3 This is an exploded structural diagram of the three-dimensional schematic diagram of this utility model;

[0024] Figure 4 This is a top view of the present invention;

[0025] Figure 5 for Figure 4 A schematic diagram of the AA cross-section;

[0026] Figure 6 for Figure 4 BB cross-sectional diagram;

[0027] Figure 7 for Figure 5 A magnified view of part A;

[0028] Figure 8 for Figure 6 A magnified view of part B;

[0029] In the diagram: 1. Granite air flotation platform; 2. Positive air inlet; 3. Negative air inlet; 4. Positive air port; 5. Negative air port; 6. Annular exhaust groove; 7. Air source switch; 8. Air filter assembly; 9. Granite fine-tuning platform; 10. Guide rail seat; 11. Slider; 12. Roller retainer; 13. Precision roller; 14. Dust cover; 15. Screw seat; 16. Fine-tuning screw; 17. Fine-tuning knob; 18. Friction damping plate; 19. Connecting part; 20. Scale; 21. Pointer; 22. Screw part; 23. Handle part; 24. Disc spring. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] like Figure 1 and Figure 2 As shown, a manually adjustable air flotation workbench includes a granite air flotation platform 1. The granite air flotation platform 1 is connected to a positive air inlet 2 and a negative air inlet 3. Inside the granite air flotation platform 1, corresponding to the positive air inlet 2, there are a positive pressure main air channel and a positive pressure branch air channel. The end of the positive pressure branch air channel is connected to a positive air hole 4. Inside the granite air flotation platform 1, corresponding to the negative air inlet 3, there are a negative pressure main air channel and a negative pressure branch air channel. The end of the negative pressure branch air channel is connected to a negative air hole 5. An annular exhaust groove 6 is formed on the bottom surface of the granite air flotation platform 1, surrounding the positive air hole 4. The depth of the annular exhaust groove 6 is 0.05-0.1 mm. An air source switch 7 is provided on the granite air flotation platform 1, and the air source switch 7 is connected to the positive pressure main air channel. Both the positive air inlet 2 and the negative air inlet 3 are connected to an air filter assembly 8, which is connected to the granite air flotation platform 1.

[0033] like Figure 3 and Figure 4 As shown, a granite fine-tuning platform 9 is installed on the upper layer of the granite air flotation platform 1. The granite fine-tuning platform 9 is slidably connected to the granite air flotation platform 1 via a cross roller guide. A dust cover 14 is installed on the outer periphery of the cross roller guide, and the dust cover 14 is detachably connected to the top surface of the granite air flotation platform 1. The cross roller guide includes a guide rail seat 10 and a slider 11. The guide rail seat 10 is fixed to the top surface of the granite air flotation platform 1, and the slider 11 is fixed to the bottom surface of the granite fine-tuning platform 9. A roller retainer 12 is installed on the guide rail seat 10, and a precision roller 13 is installed inside the roller retainer 12.

[0034] Furthermore, two sets of locking knobs are symmetrically arranged on both sides of the granite air flotation platform 1. Each locking knob includes a screw part 22 and a handle part 23. The screw part 22 is threadedly connected to the granite air flotation platform 1, and the end of the screw part 22 is in contact with the granite fine-tuning platform 9. A disc spring 24 is provided between the screw part 22 and the granite fine-tuning platform 9, and the disc spring 24 is connected to the end of the screw part 22.

[0035] like Figure 5-8As shown, a screw seat 15 is fixed on the granite air flotation platform 1. A fine-tuning screw 16 is internally threaded onto the screw seat 15. One end of the fine-tuning screw 16 is rotatably connected to the granite fine-tuning platform 9, and the other end is fixed with a fine-tuning knob 17. A friction damping plate 18 is connected to the screw seat 15. A connecting part 19 is provided between the fine-tuning screw 16 and the fine-tuning knob 17, and the outer peripheral surface of the connecting part 19 is in contact with the friction damping plate 18. A scale 20 is opened on the top surface of the granite air flotation platform 1, and a pointer 21 is provided on the top surface of the granite fine-tuning platform 9 corresponding to the scale 20.

[0036] The working process of this utility model is as follows:

[0037] First, the gas source switch 7 is turned off, the positive pressure gas supply is interrupted, the air film disappears, and the air flotation platform falls back to the placement surface to avoid accidental displacement caused by the continued presence of the air film; then, the compressed air purified by the air filter component 8 enters the negative air interface 3, and generates auxiliary adsorption force from the negative air hole 5 through the negative pressure main air channel and negative pressure branch air channel, which enhances the overall stability of the air flotation platform.

[0038] When the position of the granite fine-tuning stage 9 needs to be adjusted, first turn the handle 23 of the locking knob to retract the screw 22, thereby releasing the locking of the granite fine-tuning stage 9. Then turn the fine-tuning knob 17 to drive the fine-tuning screw 16 to rotate within the screw seat 15. The fine-tuning screw 16 is threadedly engaged with the screw seat 15, thereby pushing the granite fine-tuning stage 9 to move along the cross roller guide. The precision rollers 13 of the guide seat 10 roll within the roller cage 12, achieving low-friction, high-precision linear motion. The dust cover 14 covers the cross roller guide to isolate dust.

[0039] During the rotation of the fine-tuning knob 17, the contact between the connecting part 19 and the friction damping plate 18 generates appropriate friction damping, which avoids excessive fine-tuning due to inertia. At the same time, the pointer 21 of the granite fine-tuning stage 9 moves with the displacement corresponding to the scale 20 on the top surface of the air-floating platform, realizing real-time position quantitative monitoring.

[0040] Once the target position is reached, turn the locking knob to advance the screw section 22. The end of the screw then contacts the granite fine-tuning table 9 via the disc spring 24. The disc spring 24 provides a uniform locking force through elastic deformation, ensuring the stability of the fine-tuning table and preventing rigid impact damage to the guide rail.

Claims

1. A manually adjustable air flotation worktable, comprising a granite air flotation platform (1), characterized in that, The granite air flotation platform (1) is connected to a positive air interface (2) and a negative air interface (3). The granite air flotation platform (1) has a positive pressure main air channel and a positive pressure branch air channel inside corresponding to the positive air interface (2). The positive pressure branch air channel is connected to a positive air hole (4) at its end. The granite air flotation platform (1) has a negative pressure main air channel and a negative pressure branch air channel inside corresponding to the negative air interface (3). The negative pressure branch air channel is connected to a negative air hole (5) at its end. The bottom surface of the granite air flotation platform (1) has an annular exhaust groove (6). The annular exhaust groove (6) is arranged around the positive air hole (4). The depth of the annular exhaust groove (6) is 0.05-0.1mm. The granite air flotation platform (1) is equipped with an air source switch (7). The air source switch (7) is connected to the positive pressure main air channel. A granite fine-tuning platform (9) is provided on the upper layer of the granite air flotation platform (1). The granite fine-tuning platform (9) is slidably connected to the granite air flotation platform (1) through a cross roller guide. A screw seat (15) is fixed on the granite air flotation platform (1). A fine-tuning screw (16) is internally threaded onto the screw seat (15). One end of the fine-tuning screw (16) is rotatably connected to the granite fine-tuning platform (9), and the other end is fixed with a fine-tuning knob (17). Two sets of locking knobs are symmetrically arranged on both sides of the granite air flotation platform (1). The locking knob includes a screw part (22) and a handle part (23). The screw part (22) is threadedly connected to the granite air flotation platform (1), and the end of the screw part (22) is in contact with the granite fine adjustment platform (9).

2. The manually adjustable air-float worktable according to claim 1, characterized in that, Both the positive air inlet (2) and the negative air inlet (3) are connected to the air filter assembly (8), which is connected to the granite air flotation platform (1).

3. The manually adjustable air-float worktable according to claim 1, characterized in that, A dust cover (14) is provided on the outer periphery of the cross roller guide rail, and the dust cover (14) is detachably connected to the top surface of the granite air flotation platform (1).

4. The manually adjustable air-float worktable according to claim 3, characterized in that, The cross roller guide includes a guide seat (10) and a slider (11). The guide seat (10) is fixed to the top surface of the granite air flotation platform (1), and the slider (11) is fixed to the bottom surface of the granite fine-tuning platform (9). A roller retainer (12) is provided on the guide seat (10), and a precision roller (13) is provided inside the roller retainer (12).

5. A manually adjustable air-float worktable according to claim 1, characterized in that, A disc spring (24) is provided between the screw section (22) and the granite fine-tuning stage (9), and the disc spring (24) is connected to the end of the screw section (22).

6. A manually adjustable air-float worktable according to claim 1, characterized in that, The granite air flotation platform (1) has a scale (20) on its top surface, and the granite fine-tuning platform (9) has a pointer (21) on its top surface corresponding to the scale (20).

7. A manually adjustable air-float worktable according to claim 1, characterized in that, A friction damping plate (18) is connected to the screw seat (15), and a connecting part (19) is provided between the fine-tuning screw (16) and the fine-tuning knob (17). The outer peripheral surface of the connecting part (19) is in contact with the friction damping plate (18).

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