A flexible polishing device with adaptive pressure control

Abstract

The utility model relates to metal surface treatment equipment field especially relates to a kind of flexible polishing device of self-adaptive pressure control, including host computer, controller is installed in host computer top, drive assembly is installed in host computer front side, drive assembly is sleeved with polishing belt, drive assembly right end is connected with mounting plate, extrusion plate is slidably connected in mounting plate right side, pressure sensor is installed in mounting plate, extrusion plate and pressure sensor extrusion fit, pressure sensor and controller are wiredly connected, extrusion plate is sleeved with first return spring, motor is installed in host computer rear side, drive assembly rear side is connected with rack, the output shaft of motor is connected gear, gear and rack are engaged. Through real-time detection extrusion plate pressure by pressure sensor, controller starts motor according to signal, drive polishing belt initiative to approach metal roller by gear, rack transmission, reduce workpiece push-out distance and polishing belt bending degree, reduce equipment fatigue risk, improve processing efficiency and prolong polishing belt service life.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment equipment, and in particular to a flexible polishing device with adaptive pressure control. Background Technology

[0002] Metal polishing is an indispensable key process in manufacturing, widely used in aerospace, automotive manufacturing, precision instruments, and other fields. By grinding, cutting, or chemically treating metal surfaces, the surface quality, dimensional accuracy, and corrosion resistance of products can be significantly improved, directly affecting their performance and lifespan. With the increasing demand for high-precision metal parts with complex curved surfaces and thin-walled structures from industrial development, the flexibility and intelligence of polishing processes have become important directions for technological upgrading.

[0003] Existing polishing equipment mostly uses a ring-shaped flexible polishing belt as the processing medium. Its working principle is as follows: the polishing belt continuously rotates via a drive roller, and the metal workpiece to be processed is pressed against the polishing belt by a mechanical device. The relative motion between the two achieves surface material removal. During this process, the polishing belt bends and deforms due to the force when in contact with the metal, forming an arc-shaped envelope surface at the contact area. Traditional equipment controls the pressure through a fixed clamping mechanism, and its pressure adjustment relies on experience. Especially when processing thick metal parts, the clamping force needs to be significantly increased to ensure polishing efficiency, leading to a greater degree of bending at the contact point between the polishing belt and the metal.

[0004] Pressure control relies entirely on the passive bending deformation of the polishing belt, lacking active adjustment capability. When machining thick parts, the metal workpiece needs to be pushed too far towards the polishing belt to achieve effective contact pressure, which not only reduces processing efficiency but also easily causes excessive stretching and deformation of the polishing belt, accelerating material fatigue. When the metal workpiece completes a single polishing stroke and leaves the polishing belt, the belt rapidly relaxes due to the instantaneous loss of support, causing lateral slippage or even roll slippage on the drive rollers. Such problems not only affect the service life of the polishing belt but can also lead to equipment failure, especially in high-speed continuous processing scenarios where stability issues are particularly prominent. Utility Model Content

[0005] To overcome the drawbacks of inefficiency due to over-pushing and loosening of the rollers, this invention provides a flexible polishing device with adaptive pressure control, aiming to solve the aforementioned shortcomings.

[0006] An adaptive pressure-controlled flexible polishing device includes a main unit, a controller mounted on the top of the main unit, a drive assembly mounted on the front of the main unit, a polishing belt sleeved on the drive assembly, a mounting plate connected to the right end of the drive assembly, a pressing plate slidably connected to the right side of the mounting plate, a pressure sensor mounted inside the mounting plate, the pressing plate and the pressure sensor engaging in a pressing fit, the pressure sensor being wired to the controller, a first return spring sleeved on the pressing plate, one end of the first return spring being connected to the pressing plate and the other end being connected to the mounting plate, a motor mounted on the rear of the main unit, a rack connected to the rear of the drive assembly, the rack being slidably connected inside the main unit, a gear connected to the output shaft of the motor, the gear being rotatably connected inside the main unit, the gear meshing with the rack, the motor being wired to the controller, and a return assembly for limiting the position of the polishing belt provided on the top of the drive assembly.

[0007] Preferably, the return assembly includes a fixed plate connected to the top of the drive assembly. Contact wheels are rotatably connected to both the front and rear ends of the upper part of the fixed plate. A connecting rod is connected to the bottom of each contact wheel, and the connecting rod is located on the front and rear sides of the polishing belt. The contact wheel at its front end is slidably connected to the fixed plate. A guide rod is slidably connected to the front end of the fixed plate, and the end of the guide rod is fixedly connected to the front contact wheel. A second return spring is sleeved on the guide rod, with one end connected to the fixed plate and the other end connected to the guide rod.

[0008] Preferably, the outer ring of the connecting rod is fitted with a protective pad.

[0009] Preferably, an anti-wear pad is connected to the right side of the extrusion plate, and the anti-wear pad is in contact with the inner side of the polishing belt.

[0010] Preferably, a telescopic pad is provided around the gap between the extrusion plate and the mounting plate, with one end of the telescopic pad connected to the extrusion plate and the other end connected to the mounting plate.

[0011] Preferably, the main unit is connected to protective shells on both the left and right sides, and the rack is slidably connected inside the protective shells.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The pressure sensor detects the pressure of the extrusion plate in real time. The controller starts the motor according to the signal, and drives the polishing belt to actively approach the metal roller through gear and rack transmission. This reduces the workpiece ejection distance and the degree of bending of the polishing belt, reduces the risk of equipment fatigue, improves processing efficiency and extends the service life of the polishing belt.

[0014] 2. By using the contact wheel, connecting rod and second reset spring of the return assembly for elastic limiting, combined with the expansion pad to close the gap, the anti-wear pad to reduce friction, and the protective shell to block debris, the polishing belt rebound process is stabilized, slippage or roll slippage is avoided, the equipment operation stability is ensured and the failure rate is reduced. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view showing the connection relationship between the motor and gear in this utility model.

[0017] Figure 3 This is a cross-sectional view showing the connection relationship between the mounting plate and the pressure sensor of this utility model.

[0018] Figure 4 This is a schematic diagram of the installation structure of the connecting rod and contact wheel of this utility model.

[0019] Reference numerals: 1_Main unit, 2_Controller, 3_Drive assembly, 31_Polishing belt, 4_Mounting plate, 5_Pressure sensor, 6_Extrusion plate, 7_First return spring, 8_Motor, 9_Gear, 10_Rack, 11_Fixing plate, 12_Contact wheel, 121_Connecting rod, 13_Guide rod, 14_Second return spring, 15_Protective pad, 16_Anti-wear pad, 17_Telescopic pad, 18_Protective shell. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example: A flexible polishing device with adaptive pressure control, such as Figures 1-4As shown, the assembly includes a main unit 1, a controller 2, a drive assembly 3, a polishing belt 31, a mounting plate 4, a pressure sensor 5, a pressing plate 6, a first return spring 7, a motor 8, a gear 9, a rack 10, and a return assembly. The controller 2 is mounted on the top of the main unit 1. The controller 2 integrates a touchscreen and an emergency stop button, allowing operators to monitor pressure data in real time and quickly intervene to adjust it. The drive assembly 3 is mounted on the front of the main unit 1. The drive assembly 3 is fitted with a polishing belt 31, the back of which is covered with a low-friction coefficient coating to reduce contact resistance with the anti-wear pad 16. The right end of the drive assembly 3 is connected to the mounting plate 4, and the pressing plate 6 is slidably connected to the right side of the mounting plate 4. The pressure sensor 5 is installed inside the mounting plate 4. The extrusion plate 6 is pressed together with the pressure sensor 5. The detection surface of the pressure sensor 5 is covered with a flexible silicone pad to avoid hard contact between the extrusion plate 6 and the sensor, which would cause signal fluctuations. The pressure sensor 5 is wired to the controller 2. The extrusion plate 6 is fitted with a first return spring 7. One end of the first return spring 7 is connected to the extrusion plate 6, and the other end is connected to the mounting plate 4. A motor 8 is installed on the rear side of the main unit 1. A rack 10 is connected to the rear side of the drive assembly 3. The rack 10 is slidably connected inside the main unit 1. The output shaft of the motor 8 is connected to a gear 9. The gear 9 is rotatably connected inside the main unit 1. The gear 9 meshes with the rack 10. The motor 8 is wired to the controller 2. A return assembly for limiting the position of the polishing belt 31 is provided on the top of the drive assembly 3.

[0022] like Figure 2 and Figure 4 As shown, the return assembly includes a fixed plate 11, a contact wheel 12, a connecting rod 121, a guide rod 13, and a second return spring 14. The fixed plate 11 is connected to the top of the drive assembly 3. The front and rear ends of the upper part of the fixed plate 11 are rotatably connected to the contact wheel 12. The bottom of the contact wheel 12 is connected to the connecting rod 121. The connecting rod 121 is located on the front and rear sides of the polishing belt 31. The contact wheel 12 at the front end is slidably connected to the fixed plate 11. The front end of the fixed plate 11 is slidably connected to the guide rod 13. The end of the guide rod 13 is fixedly connected to the front contact wheel 12. The guide rod 13 is sleeved with the second return spring 14. One end of the second return spring 14 is connected to the fixed plate 11, and the other end is connected to the guide rod 13. The preload of the second return spring 14 is adjusted to effectively limit the polishing belt 31 from coming off.

[0023] like Figure 4 As shown, it also includes a protective pad 15. The outer ring of the connecting rod 121 is fitted with a protective pad 15. The protective pad 15 is made of wear-resistant PTFE material, which reduces the direct friction between the polishing belt 31 and the connecting rod 121, and absorbs vibration energy through its own deformation, thereby reducing the operating noise of the equipment.

[0024] like Figure 3As shown, it also includes an anti-wear pad 16. The right side of the extrusion plate 6 is connected to the anti-wear pad 16. The anti-wear pad 16 contacts the inner side of the polishing belt 31. The surface of the anti-wear pad 16 is covered with a graphite coating, which has excellent lubricity and ensures that the inner side of the polishing belt 31 can maintain a low wear rate when it is continuously rubbed, thus extending the replacement cycle of the anti-wear pad 16.

[0025] like Figure 3 As shown, it also includes a telescopic pad 17. The telescopic pad 17 is arranged around the gap between the extrusion plate 6 and the mounting plate 4. One end of the telescopic pad 17 is connected to the extrusion plate 6, and the other end is connected to the mounting plate 4.

[0026] like Figure 2 As shown, it also includes a protective shell 18. The main unit 1 is connected to the protective shell 18 on both the left and right sides, and the rack 10 is slidably connected inside the protective shell 18.

[0027] When performing polishing, the operator first starts the drive assembly 3, which drives the polishing belt 31 to rotate continuously. Then, the operator holds the metal roller to be processed and slowly moves it towards the rotating polishing belt 31. The instant the metal roller contacts the polishing belt 31, the polishing belt 31 bends towards the anti-wear pad 16 under external force and adheres to the surface of the anti-wear pad 16. The reaction force of the polishing belt 31 on the metal roller pushes the extrusion plate 6 into the mounting plate 4, compressing the first return spring 7 and generating a spring force opposite to the pressure direction. If the spring force of the first return spring 7 is sufficient to meet the current polishing pressure requirement, the system remains stable, and the polishing process continues. If greater polishing pressure is required, the operator continues to push the metal roller inward, and the extrusion plate 6 slides further into the mounting plate 4, its end contacting the pressure sensor 5 and applying pressure. The pressure sensor 5 detects the force value in real time. When insufficient pressure is detected, it sends a signal to the controller 2, which then starts the motor 8. Motor 8 drives gear 9 to rotate, and gear 9 meshes with rack 10 to drive rack 10 towards the worker, thereby driving assembly 3 to move polishing belt 31 closer to the worker's position. During this process, the worker does not need to continuously extend their arm and can stably hold the metal roller. The system dynamically adjusts the contact pressure between polishing belt 31 and metal roller by controlling the rotation angle of motor 8 based on the pressure value fed back by pressure sensor 5, thus achieving adaptive pressure control.

[0028] After a single polishing cycle is completed, the operator stops pushing the metal roller. The pressing plate 6 gradually rebounds under the elastic force of the first return spring 7, disengaging from the pressure sensor 5. Upon receiving the pressure loss signal, the controller 2 controls the motor 8 to rotate in the opposite direction. The gear 9 drives the rack 10 to reset, and the drive assembly 3 slides backward, causing the polishing belt 31 to return to its original position. During the rebound, the polishing belt 31 experiences significantly reduced back-and-forth fluctuations due to the buffering effect of the first return spring 7. When the polishing belt 31 fluctuates slightly, its edge contacts the connecting rod 121. The connecting rod 121 rotates under the force of the polishing belt 31, while the contact wheel 12 slides along the surface of the fixed plate 11. The guide rod 13 moves accordingly, compressing the second return spring 14. The elastic force of the second return spring 14 is transmitted to the contact wheel 12 through the guide rod 13, constraining the polishing belt 31 and ensuring that the polishing belt 31 can only move forward away from the contact area. During this process, the protective pad 15 fitted around the outer ring of the connecting rod 121 effectively reduces the friction and wear between the polishing belt 31 and the connecting rod 121; the smooth surface of the anti-wear pad 16 further reduces the frictional resistance between the polishing belt 31 and the extrusion plate 6; the telescopic pad 17 seals the gap between the extrusion plate 6 and the mounting plate 4 to prevent processing debris from entering and affecting the sliding of the extrusion plate 6 or blocking the movement space of the first return spring 7; the protective shell 18 completely covers the rack 10 to prevent impurities from entering the main unit 1 and interfering with the meshing transmission between the gear 9 and the rack 10, thus ensuring the stability of equipment operation.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A flexible polishing device with adaptive pressure control, characterized in that, The system includes a main unit (1), a controller (2) mounted on the top of the main unit (1), a drive assembly (3) mounted on the front side of the main unit (1), a polishing belt (31) sleeved on the drive assembly (3), a mounting plate (4) connected to the right end of the drive assembly (3), a pressing plate (6) slidably connected to the right side of the mounting plate (4), a pressure sensor (5) installed inside the mounting plate (4), the pressing plate (6) and the pressure sensor (5) being pressed together, the pressure sensor (5) being wiredly connected to the controller (2), and a first reset spring (7) sleeved on the pressing plate (6). One end of the spring (7) is connected to the extrusion plate (6), and the other end is connected to the mounting plate (4). A motor (8) is installed on the rear side of the host (1). A rack (10) is connected to the rear side of the drive assembly (3). The rack (10) is slidably connected inside the host (1). The output shaft of the motor (8) is connected to a gear (9). The gear (9) is rotatably connected inside the host (1). The gear (9) meshes with the rack (10). The motor (8) is wired to the controller (2). A return assembly for limiting the position of the polishing belt (31) is provided on the top of the drive assembly (3).

2. The flexible polishing device with adaptive pressure control according to claim 1, characterized in that, The return assembly includes a fixed plate (11), which is connected to the top of the drive assembly (3). The fixed plate (11) has contact wheels (12) rotatably connected to both the front and rear ends of the upper part of the fixed plate (11). The bottom of the contact wheel (12) is connected to a connecting rod (121), which is located on the front and rear sides of the polishing belt (31). The contact wheel (12) at the front end is slidably connected to the fixed plate (11). The front end of the fixed plate (11) is slidably connected to a guide rod (13). The end of the guide rod (13) is fixedly connected to the front contact wheel (12). The guide rod (13) is fitted with a second return spring (14). One end of the second return spring (14) is connected to the fixed plate (11), and the other end is connected to the guide rod (13).

3. The adaptive pressure-controlled flexible polishing device according to claim 2, characterized in that, The outer ring of the connecting rod (121) is fitted with a protective pad (15).

4. The adaptive pressure-controlled flexible polishing device according to claim 3, characterized in that, The extrusion plate (6) is connected to an anti-wear pad (16) on the right side, and the anti-wear pad (16) is in contact with the inner side of the polishing belt (31).

5. The flexible polishing device with adaptive pressure control according to claim 4, characterized in that, A telescopic pad (17) is provided around the gap between the extrusion plate (6) and the mounting plate (4). One end of the telescopic pad (17) is connected to the extrusion plate (6), and the other end is connected to the mounting plate (4).

6. The flexible polishing device with adaptive pressure control according to claim 5, characterized in that, The host (1) is connected to protective shells (18) on both the left and right sides, and the rack (10) is slidably connected inside the protective shells (18).

Images