High-stability and high-efficiency polishing device

Abstract

The utility model belongs to the technical field of polishing devices, and particularly relates to a high-stability and high-efficiency polishing device which comprises an integrated cavity, a servo motor and a voice coil motor, the voice coil motor is fixedly connected with one side of the integrated cavity, the output end of the voice coil motor is fixedly connected with a fixed pulley, and a steel cable is wound on the fixed pulley; the bottom of the steel cable is fixedly connected with a low-type heavy-load square locking type sliding block, and one side of the integrated cavity is provided with a low-type heavy-load square locking type guide rail corresponding to the low-type heavy-load square locking type sliding block. One side of the low-type heavy-load square locking type sliding block is fixedly connected with a servo motor, and the output end of the servo motor is fixedly connected with a coupler. The integrated cavity does not contain mechanical connection structures such as screws and pins, the situation that the whole frame of the device is loosened due to the long-time high-pressure and high-vibration machining environment is fundamentally avoided, the maintenance difficulty is greatly lowered, and the long-term machining stability is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of polishing device technology, and in particular to a polishing device with high stability and high efficiency. Background Technology

[0002] Polishing machines, also known as grinding machines, are commonly used for mechanical grinding, polishing, and waxing. Their working principle is as follows: an electric motor drives a sponge or wool polishing disc mounted on the machine to rotate at high speed. Due to the combined action of the polishing disc and polishing compound, and the friction against the surface to be polished, paint contamination, oxide layers, and shallow scratches can be removed.

[0003] The existing patent "CN202210959215.0" proposes a high-efficiency polishing device, which includes a mounting top plate, a linear guide rail, a rotating shaft mounting base, a servo motor, a coupling, a bearing housing, a rotating shaft, a spherical polishing head, and a double-acting low-friction cylinder. The mounting top plate is mounted on the flange end of a six-degree-of-freedom robot, the linear guide rail is mounted on the lower end of the mounting top plate, the rotating shaft mounting base is mounted on the slider of the linear guide rail, the bearing housing is mounted on the rotating shaft mounting base, the servo motor is mounted on the bearing housing, the servo motor is connected to the rotating shaft through the coupling, and the spherical polishing head is mounted on the lower end of the rotating shaft.

[0004] Compared with traditional polishing technology, optical polishing devices that use robotic arms to control polishing heads have extremely high efficiency in polishing aspherical and even free-form surfaces while ensuring accuracy. However, due to mechanical structure and other reasons, their processing stability will gradually decrease in long-term high-intensity polishing operations. Regular maintenance is required to ensure processing efficiency and accuracy, and many parts may need to be replaced, which greatly increases maintenance costs and difficulty. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this invention is to solve the problem that the processing stability of existing optical polishing devices gradually decreases during long-term high-intensity polishing operations due to mechanical structure and other reasons, which greatly increases maintenance costs and difficulties. Therefore, this invention proposes a polishing device with high stability and high efficiency.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high-stability and high-efficiency polishing device includes an integrated cavity, a servo motor, and a voice coil motor. The voice coil motor is fixedly connected to one side of the integrated cavity, and a fixed pulley is fixedly connected to the output end of the voice coil motor. A steel cable is wound on the fixed pulley.

[0010] The bottom of the steel cable is fixedly connected to a low-type heavy-duty square locking slider, and one side of the integrated cavity is provided with a low-type heavy-duty square locking guide rail corresponding to the low-type heavy-duty square locking slider.

[0011] A servo motor is fixedly connected to one side of the low-profile heavy-duty square locking slider. A coupling is fixedly connected to the output end of the servo motor, and a main shaft is fixedly connected to the output end of the coupling.

[0012] Preferably, the voice coil motor is fixedly connected to the integrated cavity via a voice coil motor connecting bracket.

[0013] Preferably, the steel cable is a rubber-coated steel cable.

[0014] Preferably, the low-profile heavy-duty square locking slider is fixedly connected to the servo motor via a servo motor connecting bracket.

[0015] Preferably, a grating ruler is fixedly connected to one side of the servo motor connecting frame, and a reading head corresponding to the grating ruler is fixedly connected to the integrated cavity.

[0016] Preferably, a limiting block corresponding to the servo motor connecting frame is fixedly connected to the integrated cavity.

[0017] Preferably, a laser ranging displacement sensor corresponding to a low-profile heavy-duty square locking slider is fixedly connected to the top of the integrated cavity.

[0018] Preferably, a photoelectric switch corresponding to the voice coil motor is fixedly connected to one side of the integrated cavity.

[0019] Preferably, the servo motor is connected to a balancing assembly via multiple fixing bolts on the side near the low-profile heavy-duty square lockable guide rail.

[0020] 3. Beneficial effects

[0021] Compared with existing technologies, the advantages of this utility model are:

[0022] (1) In this utility model, the integrated cavity does not contain mechanical connection structures such as screws and pins, which fundamentally avoids the loosening of the overall frame of the device due to the long-term high-pressure and high-vibration processing environment, greatly reducing the maintenance difficulty and ensuring long-term processing stability.

[0023] (2) In this utility model, the servo motor shaft is directly connected to the spindle via a coupling, avoiding the power loss caused by the instability of the original transmission structure due to long-term processing. Its high torque output capability directly outputs the spindle speed, ensuring long-term polishing efficiency. Furthermore, it makes replacing parts more convenient and significantly reduces the difficulty of long-term maintenance. The counterweight is changed to a counterweight assembly, and its mechanical structure is modified to allow for easy addition or removal of some counterweights. Even after the weight of the servo motor is added to the spindle, it can still balance the spindle's own weight and inertia, and make torque balance adjustment more convenient and flexible. This ensures polishing accuracy while also greatly improving the convenience of long-term maintenance.

[0024] (3) In this utility model, the guide rails and sliders on both sides are replaced by miniature wide linear guide rails with low-profile heavy-duty square locking guide rails. The slider body is made of high-quality bearing steel, which has high hardness, high strength and good wear resistance, so that the slider can withstand greater loads and maintain good precision in long-term polishing. The balls inside the slider are made of high-chromium steel, which has excellent hardness and rolling performance. Its hardness can ensure that it will not easily deform when subjected to high loads, thus ensuring the stability of long-term polishing. The rolling performance brought about by its low rolling friction coefficient greatly reduces the resistance of the spindle sliding up and down, and improves the problem that the torque cannot be balanced in both directions due to the different directions of the sliding resistance. This greatly reduces the fluctuation of the output torque in polishing and improves the stability of the polishing effect. The original steel cable is replaced with a rubber-coated steel cable, which greatly reduces the friction between the steel cable and the fixed pulley, further improves the torque balance problem in different directions and improves the stability of the polishing effect.

[0025] (4) In this utility model, the closed-loop control is based on the original grating ruler, with the addition of a laser ranging displacement sensor, and the use of a limit block as a hard limit and a photoelectric switch as a soft limit to achieve higher precision double closed-loop processing position control, avoiding processing the workpiece when the torque does not meet expectations, and ensuring the stability of the polishing effect.

[0026] (5) In this utility model, the end of the spindle is changed to a large-diameter threaded hole with high concentricity, which can easily install various ball grinding heads, polishing discs and eccentric polishing discs. While having high polishing stability, the polishing tools can be quickly replaced according to polishing requirements, thus improving the overall polishing processing efficiency. Attached Figure Description

[0027] Figure 1 This is a front view schematic diagram of a high-stability and high-efficiency polishing device proposed in this utility model;

[0028] Figure 2 This is a rear view structural diagram of a high-stability and high-efficiency polishing device proposed in this utility model.

[0029] In the diagram: 1 Integrated cavity, 2 Laser ranging displacement sensor, 3 Limiting block, 4 Motor connecting plate, 5 Grating ruler, 6 Reading head, 7 Fixed pulley, 8 Rubber-coated steel cable, 9 Voice coil motor, 10 Servo motor, 11 Voice coil motor connecting frame, 12 Coupling, 13 Servo motor connecting frame, 14 Photoelectric switch, 15 Low-profile heavy-duty square locking slider, 16 Main spindle, 17 Alignment unit, 18 Low-profile heavy-duty square locking guide rail. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1:

[0032] Reference Figure 1-2 A high-stability and high-efficiency polishing device includes an integrated cavity 1, a servo motor 10, and a voice coil motor 9. The voice coil motor 9 is fixedly connected to the integrated cavity 1 through a voice coil motor connecting bracket 11, which facilitates the fixing and disassembly of the voice coil motor 9. The voice coil motor 9 is fixedly connected to one side of the integrated cavity 1. A fixed pulley 7 is fixedly connected to the output end of the voice coil motor 9. A steel cable 8 is wound on the fixed pulley 7. The steel cable 8 is a rubber-coated steel cable, which can balance the weight of the servo motor 10 and the spindle 16 and reduce inertia.

[0033] In this utility model, a low-profile heavy-duty square locking slider 15 is fixedly connected to the bottom of the steel cable 8, and a laser ranging displacement sensor 2 corresponding to the low-profile heavy-duty square locking slider 15 is fixedly connected to the top of the integrated cavity 1. This sensor is used to monitor the displacement of the low-profile heavy-duty square locking slider 15. A low-profile heavy-duty square locking guide rail 18 corresponding to the low-profile heavy-duty square locking slider 15 is provided on one side of the integrated cavity 1. This guide rail can balance the weight of the servo motor 10 and the spindle 16 and reduce inertia.

[0034] In this utility model, a servo motor 10 is fixedly connected to one side of the low-type heavy-duty square locking slider 15 to drive the spindle 16 to rotate. The side of the servo motor 10 close to the low-type heavy-duty square locking guide rail 18 is connected to a balancing unit 17 by multiple fixing bolts to ensure the balance of the spindle's self-weight and inertia, and to make torque balance adjustment more convenient and flexible.

[0035] In this utility model, a photoelectric switch 14 corresponding to the voice coil motor 9 is fixedly connected to one side of the integrated cavity 1. The low-profile heavy-duty square locking slider 15 is fixedly connected to the servo motor 10 through the servo motor connecting frame 13. A limiting block 3 corresponding to the servo motor connecting frame 13 is fixedly connected to the integrated cavity 1 to limit the movement position of the servo motor connecting frame 13.

[0036] In this utility model, a grating ruler 5 is fixedly connected to one side of the servo motor connecting frame 13, and a reading head 6 corresponding to the grating ruler 5 is fixedly connected to the integrated cavity 1. This head can provide feedback on the overall position information of the main shaft 16 and, in conjunction with the photoelectric switch 14, control the voice coil motor 9 coil winding to maintain it within the ideal output range. The output end of the servo motor 10 is fixedly connected to a coupling 12, and the output end of the coupling 12 is fixedly connected to the main shaft 16.

[0037] In this invention, during polishing, the servo motor 10 controls the rotation speed and drives the spindle 16 and polishing head to rotate through the coupling 12; the voice coil motor 9 outputs a constant torque through a constant current on the side of the spindle 16, applying a constant downward pressure to the polishing head; the high-precision grating encoder composed of the grating ruler 5 and the reading head 6, and the laser ranging displacement sensor 2 provide feedback on the overall position information of the spindle 16, and work with the photoelectric switch 14 to control the coil winding of the voice coil motor 9 to stay within the ideal output range, so that the entire device continues to work, ensuring that the device performs processing under a stable current and torque relationship, avoiding large local errors; the counterweight uses the fixed pulley 7, the low-profile heavy-duty square locking slide rail 18, and the rubber-coated steel cable 8 to balance the weight of the servo motor 10 and the spindle 16 and reduce inertia, ensuring that the output torque of the polishing head is stable and controllable.

[0038] In this invention, the integrated cavity does not contain mechanical connection structures such as screws and pins, which fundamentally avoids the loosening of the overall frame of the device due to long-term high-pressure and high-vibration processing environment, greatly reducing the difficulty of maintenance and ensuring long-term processing stability.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-stability and high-efficiency polishing device, comprising an integrated cavity (1), a servo motor (10), and a voice coil motor (9), characterized in that, The voice coil motor (9) is fixedly connected to one side of the integrated cavity (1), and a fixed pulley (7) is fixedly connected to the output end of the voice coil motor (9), and a steel cable (8) is wound on the fixed pulley (7). The bottom of the steel cable (8) is fixedly connected to a low-type heavy-duty square locking slider (15), and a low-type heavy-duty square locking guide rail (18) corresponding to the low-type heavy-duty square locking slider (15) is provided on one side of the integrated cavity (1). A servo motor (10) is fixedly connected to one side of the low-profile heavy-duty square locking slider (15), and a coupling (12) is fixedly connected to the output end of the servo motor (10), and a main shaft (16) is fixedly connected to the output end of the coupling (12).

2. The high-stability and high-efficiency polishing device according to claim 1, characterized in that, The voice coil motor (9) and the integrated cavity (1) are fixedly connected by a voice coil motor connecting bracket (11).

3. The high-stability and high-efficiency polishing device according to claim 1, characterized in that, The steel cable (8) is a rubber-coated steel cable.

4. The high-stability and high-efficiency polishing device according to claim 1, characterized in that, The low-profile heavy-duty square locking slider (15) and the servo motor (10) are fixedly connected by a servo motor connecting bracket (13).

5. The high-stability and high-efficiency polishing device according to claim 4, characterized in that, A grating ruler (5) is fixedly connected to one side of the servo motor connecting frame (13), and a reading head (6) corresponding to the grating ruler (5) is fixedly connected to the integrated cavity (1).

6. The high-stability and high-efficiency polishing device according to claim 4, characterized in that, The integrated cavity (1) is fixedly connected with a limiting block (3) corresponding to the servo motor connecting frame (13).

7. The high-stability and high-efficiency polishing device according to claim 1, characterized in that, The top of the integrated cavity (1) is fixedly connected to a laser ranging displacement sensor (2) corresponding to the low-profile heavy-duty square locking slider (15).

8. The high-stability and high-efficiency polishing device according to claim 1, characterized in that, A photoelectric switch (14) corresponding to the voice coil motor (9) is fixedly connected to one side of the integrated cavity (1).

9. The high-stability and high-efficiency polishing device according to claim 1, characterized in that, The servo motor (10) is connected to a ballast unit (17) by multiple fixing bolts on one side near the low-profile heavy-duty square lockable guide rail (18).

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