Self-feeding vibratory rotary flexible polishing tool

Abstract

The application discloses a self-supply vibration rotary flexible polishing tool, which comprises a flange plate, a reciprocating vibration unit, a rack, a polishing paste pumping unit, a linear motion and rotary motion conversion joint, a hollow shaft motor and a multi-channel polishing head. The polishing paste enters the linear motion and rotary motion conversion joint through the polishing paste pumping unit, the upper end of the linear motion and rotary motion conversion joint is connected with the polishing paste pumping unit conveying hose, the tail end is connected with the hollow shaft motor, the linear motion of the polishing paste is converted into rotary motion, the hollow shaft motor drives the multi-channel polishing head to rotate, and the material of the polished part is removed. The reciprocating vibration unit controls the polishing head to perform rapid reciprocating motion, thereby realizing the vibration function. A plurality of channels are arranged in the multi-channel polishing head to ensure that the polishing paste flows out and adheres to the surface of the polished part. The polishing tool vibration frequency and the polishing paste injection amount per unit time can be adjusted, and the medium frequency error convergence speed in the polishing process can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of polishing technology for optical curved surface elements, and in particular to a self-feeding vibration-rotation flexible polishing tool. Background Technology

[0002] Thanks to the superior performance of aspherical optical elements, their applications in military, aerospace, and precision instruments are becoming increasingly frequent. However, due to the non-uniform curvature of aspherical surfaces, existing polishing equipment generates relatively high mid-frequency errors during the processing of aspherical optical devices, thus affecting the imaging performance of these elements. Therefore, improving the polishing equipment for aspherical optical elements to effectively increase the convergence speed of mid-frequency errors during the polishing process, thereby significantly improving the surface imaging performance of optical aspherical surfaces, is a crucial problem that urgently needs to be solved.

[0003] Currently, thanks to the rapid development of computer technology, the polishing path for aspherical optical elements can be accurately calculated, and the quantitative surface shape error data of aspherical optical elements can be directly and accurately detected. Combined with the material removal function and residence time during the polishing process, automated processing equipment can effectively improve the polishing accuracy of optical elements. Although the polishing accuracy of aspherical optical elements has been greatly improved, current automated polishing equipment still has shortcomings:

[0004] (1) The amplitude of the piezoelectric device is too small. Compared with the polishing contact area, the polishing band expansion width that the piezoelectric material can achieve is very limited. Therefore, the effect on mid-frequency error suppression is not ideal. In addition, due to the small amplitude, piezoelectric vibration polishing also has the defect of insufficient polishing efficiency.

[0005] (2) The corresponding equipment only realizes the vibration function, but the polishing liquid is supplied entirely manually during the polishing process, or the polishing paste is applied to the surface to be polished in advance. This practice not only wastes abrasives but also reduces polishing efficiency. Most importantly, it cannot guarantee the uniformity of the polishing abrasive distribution on the surface to be polished, thus affecting the final polishing effect. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problems of low polishing efficiency, insufficient single polishing accuracy, and rapid convergence and suppression of mid-frequency error in the existing polishing equipment. The present invention provides a self-feeding vibrating rotary flexible polishing tool that can achieve high-efficiency and high-precision polishing of optical components. The vibration frequency of the polishing tool and the amount of polishing paste injected per unit time are adjustable, which can effectively improve the convergence speed of mid-frequency error in the polishing process.

[0007] To solve the above-mentioned technical problems, the present invention provides a self-feeding vibration-rotation flexible polishing tool, comprising:

[0008] The frame is mounted on a robot or CNC machine tool via a first flange;

[0009] A reciprocating vibration unit is installed on the frame and moves back and forth to control the overlap of the polishing trajectory and the width of the polishing band. The reciprocating vibration unit includes a voice coil motor, a stroke sensor, and a motor control board. The end of the output shaft of the voice coil motor is connected to the motor side mounting body of the frame, the base of the voice coil motor is connected to the upper mounting plate of the frame, and the end of the voice coil motor is connected to the motor control board.

[0010] A polishing compound pumping unit is installed above the frame for conveying polishing compound; the polishing compound pumping unit includes a gear pump, a delivery hose, a first pagoda connector, and a first clamp; the pump head of the gear pump is connected to the first pagoda connector, the other end of the first pagoda connector is connected to the delivery hose, and the connection between the first pagoda connector and the delivery hose is secured with the first clamp;

[0011] A motion conversion device is used to convert linear motion into rotational motion. The motion conversion device includes a rotary joint, a second clamp, a second pagoda joint, a fixing device, and a mounting bracket. The rotary joint is nested inside the mounting bracket. The fixing device is disposed on the outside of the rotary joint and connected to it. One end of the rotary joint is connected to the second pagoda joint, and the other end of the second pagoda joint is connected to the delivery hose.

[0012] A multi-channel polishing head device includes a multi-channel polishing head, an upper flange, and a lower flange; the upper flange and the lower flange are respectively fitted onto the upper and lower sides of the flange connecting ring of the multi-channel polishing head, and the upper flange and the lower flange are connected by multiple fasteners.

[0013] An air shaft motor, mounted on the frame and located between the motion conversion device and the multi-channel polishing head device, is used to deliver polishing paste from the polishing paste pumping unit to the multi-channel polishing head device while simultaneously controlling the rotation of the multi-channel polishing head device.

[0014] In one embodiment of the present invention, the frame includes an upper mounting plate, a motor mounting body, a first linear guide rail, a second linear guide rail, and a side mounting plate; the upper mounting plate is connected to a first flange, and the first and second linear guide rails are both connected to the upper mounting plate through the side mounting plate; the motor mounting body is used to mount the hollow shaft motor, and the motor mounting body can reciprocate along the first linear guide rail; the fixing device of the motion conversion device is mounted on the second linear guide rail, and when the hollow shaft motor reciprocates under the action of the reciprocating vibration unit, it synchronously drives the motion conversion device to move synchronously along the second linear guide rail.

[0015] In one embodiment of the present invention, the motor mounting body is provided with through holes on both sides, and a linear bearing adapted to the first linear guide rail is provided in the through holes; the fixing device is provided with through holes on both sides, and a linear bearing adapted to the second linear guide rail is installed in the through holes.

[0016] In one embodiment of the present invention, a stroke sensor is installed inside the voice coil motor, and the signal receiving interface of the voice coil motor is connected to the motor control board via a signal line; the end of the output shaft of the voice coil motor is connected to the motor mounting body of the frame via a second flange.

[0017] In one embodiment of the present invention, the gear pump is connected to one end of the first pagoda connector; the other end of the first pagoda connector is connected to one end of the delivery hose and secured by a first clamp; the other end of the delivery hose is connected to the rotary joint of the motion conversion device and secured by a clamp.

[0018] In one embodiment of the present invention, the rotary joint includes an inner rotary joint layer and an outer rotary joint layer that can rotate relative to each other; the outer rotary joint layer is connected to one end of the second pagoda joint; the inner rotary joint layer is connected to the motor shaft of the hollow shaft motor.

[0019] In one embodiment of the present invention, the motor shaft of the hollow shaft motor is a tubular shaft, the polishing paste input end of the motor shaft is connected to the inner layer of the rotary joint, and the polishing paste output end of the motor shaft is connected to the upper flange of the multi-channel polishing head device.

[0020] In one embodiment of the present invention, the multi-channel polishing head has a double-layer structure, including a polishing pad and an inner polishing head. The polishing pad is fixedly disposed on the outer layer of the inner polishing head, and both the polishing pad and the inner polishing head are provided with multiple channels for the passage of polishing paste.

[0021] In one embodiment of the present invention, the cross-section of the multi-channel polishing head is an arc-shaped structure with a low center and high edges.

[0022] In one embodiment of the present invention, a sealing ring and a lip seal are provided at the connection point between the flange connecting ring and the upper flange.

[0023] The technical solution of the present invention has the following advantages compared with the prior art:

[0024] This invention discloses a self-feeding vibratory rotary flexible polishing tool. Through a polishing paste pumping unit, the polishing paste, under the action of a delivery pump, passes through a conversion connector, an empty shaft motor, and a multi-channel polishing head, directly delivering it to the polishing area. This enables controllable abrasive replenishment in the polishing area, effectively improving the separation of abrasive supply and polishing process in conventional polishing. It achieves on-demand abrasive delivery during polishing, increasing polishing efficiency. Furthermore, the reciprocating vibration structure integrates the lateral vibration of the voice coil motor and the rotational motion of the empty shaft motor into a composite motion of the polishing head, effectively improving the convergence rate of low-frequency errors during polishing, increasing the polishing trajectory coverage, and enhancing the polishing accuracy of curved surfaces. Therefore, this self-feeding vibratory rotary flexible polishing tool possesses significant practical application value in improving polishing quality and efficiency. Attached Figure Description

[0025] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the structure of the self-feeding vibration-rotation flexible polishing tool in a preferred embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Schematic diagram of the reciprocating vibration unit;

[0028] Figure 3 yes Figure 1 Schematic diagram of the polishing compound's trajectory;

[0029] Figure 4 yes Figure 1 Schematic diagram of a multi-channel polishing head device;

[0030] Explanation of reference numerals in the accompanying drawings: 1. First flange; 2. Reciprocating vibration unit; 21. Voice coil motor; 22. Stroke sensor; 23. Control board; 24. Second flange; 3. Frame; 31. Upper mounting plate; 32. Motor mounting body; 322. Linear bearing one; 33. First linear guide; 34. Second linear guide; 35. Side mounting plate; 4. Polishing paste pumping unit; 41. Gear pump; 42. Delivery hose; 43. First pagoda connector ; 44. First clamp; 5. Motion conversion device; 51. Rotary joint; 511. Inner layer of rotary joint; 512. Outer layer of rotary joint; 52. Second clamp; 53. Second pagoda joint; 54. Fixing device; 55. Mounting support; 6. Hollow shaft motor; 61. Hollow shaft; 7. Multi-channel polishing head device; 71. Multi-channel polishing head; 711. Polishing pad; 712. Polishing head; 713. Sealing ring; 72. Upper flange; 73. Lower flange. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0032] Reference Figure 1-2 As shown, a self-feeding vibration-rotation flexible polishing tool of the present invention includes:

[0033] The frame 3 is mounted on a robot or CNC machine tool via the first flange 1;

[0034] A reciprocating vibration unit 2 is mounted on the frame 3 and moves left and right reciprocally to control the overlap of the polishing trajectory and the width of the polishing band. The reciprocating vibration unit 2 includes a voice coil motor 21, a stroke sensor 22, and a motor control board 23. The output shaft of the voice coil motor 21 is connected to the motor mounting body 32 of the frame 3, the base of the voice coil motor 21 is connected to the upper mounting plate 31 of the frame 3, and the end of the voice coil motor 21 is connected to the motor control board 23. The motor control board 23 is equipped with a voltage regulator module, a control signal transmission module, and a data monitoring module. The voltage regulator module is responsible for converting the input voltage into a stable 24V. The voltage is supplied to the positive terminal interface of the voice coil motor 21 at the end; the control signal transmission module is responsible for transmitting the maximum stroke control signal of the voice coil motor 21 and the reciprocating frequency signal of the voice coil motor 21 to the signal interface of the voice coil motor 21; the data monitoring module is responsible for extracting the actual amplitude and vibration frequency of the voice coil motor 21 and feeding the above signals back to the control terminal; the reciprocating vibration unit 2 can control the amount of polishing trajectory overlap and the width of the polishing band, which can not only achieve high-precision polishing trajectory coverage and effectively reduce the low- and medium-frequency errors in the polishing process of optical curved surface elements, but also achieve precise control of reciprocating movement amplitude and vibration frequency.

[0035] Polishing compound pumping unit 4 is installed above the frame 3 for conveying polishing compound; the polishing compound pumping unit 4 includes a gear pump 41, a delivery hose 42, a first pagoda connector 43, and a first clamp 44; the pump head of the gear pump 41 is connected to the first pagoda connector 43, the other end of the first pagoda connector 43 is connected to the delivery hose 42, and the connection between the first pagoda connector 43 and the delivery hose 42 is secured with the first clamp 44;

[0036] A motion conversion device 5 is used to convert linear motion into rotational motion. The motion conversion device 5 includes a rotary joint 51, a second clamp 52, a second pagoda joint 53, a fixing device 54, and a mounting bracket 55. The rotary joint 51 is entirely nested inside the mounting bracket 55. The fixing device 54 is disposed on the outside of the rotary joint 51 and connected to it. The inner end of the rotary joint 51 is connected to the second pagoda joint 53, and the other end of the second pagoda joint 53 is connected to the end of the conveying hose 42. The connection between the second pagoda joint 53 and the conveying hose 42 is secured with the second clamp 52.

[0037] The multi-channel polishing head device 7 includes a multi-channel polishing head 71, an upper flange 72, and a lower flange 73; the upper flange 72 and the lower flange 73 are respectively fitted onto the upper and lower sides of the flange connecting ring of the multi-channel polishing head 71, and the upper flange 72 and the lower flange 73 are connected by a plurality of fasteners.

[0038] An air shaft motor 6 is mounted on the frame 3 and located between the motion conversion device 5 and the multi-channel polishing head device 7. It is used to deliver the polishing paste delivered by the polishing paste pumping unit 4 to the multi-channel polishing head device 7 and simultaneously control the multi-channel polishing head device 7 to rotate.

[0039] In this embodiment, the frame 3 includes an upper mounting plate 31, a motor mounting body 32, a first linear guide rail 33, a second linear guide rail 34, and a side mounting plate 35. The upper mounting plate 31 is connected to the first flange 1. The first linear guide rail 33 and the second linear guide rail 34 are both connected to the upper mounting plate 31 through the side mounting plate 35. The motor mounting body 32 is used to mount the hollow shaft motor 6. The motor mounting body 32 can reciprocate along the first linear guide rail 33. The fixing device 54 of the motion conversion device 5 passes through the second linear guide rail 34. When the hollow shaft motor 6 reciprocates under the action of the reciprocating vibration unit 2, it synchronously drives the motion conversion device 5 to move synchronously along the second linear guide rail 34. When the output shaft of the voice coil motor 21 extends, the motor mounting body 32 drives the hollow shaft motor 6 installed inside to move to the right along the axis of the first linear guide rail 33; when the output shaft of the voice coil motor 21 retracts, the motor mounting body 32 drives the hollow shaft motor 6 installed inside to move to the left along the axis of the first linear guide rail 33; the periodic extension and retraction of the voice coil motor 21 drives the motor mounting body 32 and the hollow shaft motor 6 installed inside to produce periodic reciprocating motion, thereby achieving a vibration effect; adjusting the extension and retraction frequency and extension amount of the voice coil motor 21 can achieve different vibration frequencies and amplitudes of the hollow shaft motor 6.

[0040] Furthermore, the motor mounting body 32 has through holes on both sides, and a linear bearing 322 adapted to the first linear guide rail 33 is installed in the through holes; the fixing device 54 has through holes on both sides, and a linear bearing 541 adapted to the second linear guide rail 34 is installed in the through holes.

[0041] Furthermore, a stroke sensor 22 is installed inside the voice coil motor 21, and the signal receiving interface of the voice coil motor 21 is connected to the motor control board 23 through a signal line; the end of the output shaft of the voice coil motor 21 is connected to the motor mounting body 32 of the frame 3 through a second flange 24.

[0042] The gear pump 41 is connected to the threaded end of the first pagoda connector 43; the unthreaded end of the first pagoda connector 43 is connected to one end of the delivery hose 42 and secured by the first clamp 44; the other end of the delivery hose 42 is connected to the outer end 511 of the rotary connector 51 of the motion conversion device 5 and secured by the second clamp 52.

[0043] In this embodiment, the rotary joint 51 includes an inner rotary joint layer 511 and an outer rotary joint layer 512 that can rotate relative to each other. The end of the outer rotary joint layer 512 is connected to the end of the second pagoda joint 53 with an internal thread; the connection is secured using a second clamp 52; the end of the inner rotary joint layer 511 is connected to the output shaft end of the hollow shaft motor 6; and the outer rotary joint layer 512 is connected to the fixing device 54. Figure 3 As shown, when the hollow shaft motor 6 vibrates under the extension and retraction of the voice coil motor 21, the polishing paste pumping unit 4 injects polishing paste through the delivery hose 42 into the cavity of the inner layer 511 of the rotary joint in the linear motion to rotary motion conversion device 5 via the gear pump 41. Both the outer layer 512 and the inner layer 511 of the rotary joint in the motion conversion device 5 can rotate independently along their common axis, which coincides with the axis of the hollow shaft motor 6. Since the inner layer 511 of the rotary joint is connected to the delivery hose 42 of the polishing paste pumping unit 4 by a clamp, the outer layer 512 of the rotary joint is positioned relative to the rotary joint... The inner layer 511 of the head is relatively stationary, and the polishing paste in the cavity of the outer layer 512 of the rotary joint moves in a linear motion along the axis of the outer layer 512 of the rotary joint. The inner layer 511 of the rotary joint is connected to the hollow shaft motor 6. Under the influence of the rotation of the hollow shaft motor 6 around its own axis, the inner layer 511 of the rotary joint and the hollow shaft motor 6 rotate synchronously. The polishing paste enters the shaft of the hollow shaft motor 6 after passing through the connecting shaft between the outer layer 512 of the rotary joint and the inner layer 511 of the rotary joint. At this time, the motion state of the polishing paste becomes a superposition of linear motion along the axis of the hollow shaft motor 6 and rotational motion around the axis of the hollow shaft motor 6.

[0044] like Figure 4As shown, the multi-channel polishing head 71 has a double-layer structure, including a polishing pad 711 and an inner polishing head 712. The polishing pad 711 is fixed to the outer layer of the inner polishing head 712 by adhesive bonding. Both the polishing pad 711 and the inner polishing head 712 have multiple channels for the passage of polishing paste. The multi-channel polishing head 71 has a multi-channel structure, with the polishing pad 711 made of flexible materials such as polyurethane or damping cloth, and the interior being made of rigid metal. This structure not only allows for the flow of polishing paste but also enables stable and efficient material removal. This polishing head can achieve a removal function that is very close to a Gaussian shape. During the polishing process, the amplitude and frequency are precisely adjustable, the removal function is stable, and the mid-to-low frequency error converges quickly.

[0045] Preferably, the motor shaft 61 of the hollow shaft motor 6 is a tubular shaft. The polishing paste inlet of the motor shaft 61 is connected to the inner layer 511 of the rotary joint, and the polishing paste outlet of the motor shaft 61 is connected to the upper flange 72. When the polishing paste enters the motor shaft 61 through the motion conversion device 5, it flows into the multi-channel polishing head 71 through the motor shaft 61. The motor shaft 61 can rotate clockwise and counterclockwise around its own axis. While the motor shaft 61 is rotating, it drives the multi-channel polishing head 71 to rotate. At the same time, the polishing paste flows out onto the surface of the polished part 100 to achieve polishing.

[0046] Preferably, the cross-section of the multi-channel polishing head 71 is an arc-shaped structure with a low center and high edges.

[0047] In this embodiment, a sealing ring 713 and a lip seal are provided at the connection point between the flange connecting ring and the upper flange 72.

[0048] The amplitude and frequency control process for the polishing tool based on the above structure is as follows:

[0049] The motor control board 23 of the reciprocating vibration unit 2 is equipped with a voltage regulator module and a control signal transmission module. The voltage regulator module is responsible for converting the input voltage into a stable 24V voltage and supplying it to the positive terminal of the voice coil motor 21. The control signal transmission module can send two signals: the first control signal is responsible for determining the maximum extension stroke of the voice coil motor 21, and the second control signal is responsible for controlling the reciprocating frequency of the voice coil motor 21. Since the output end of the voice coil motor 21 is connected to the motor mounting body 32 on the outside of the hollow shaft motor 6, and the multi-channel polishing head is connected to the end of the hollow shaft motor 6 and is always in close contact with the surface to be polished during the polishing process, when the vibration amplitude and vibration of the output end of the voice coil motor 21 change, it will ultimately affect the vibration frequency and amplitude of the multi-channel polishing head 71 relative to the surface to be polished, thus realizing the change of amplitude and frequency during the polishing process.

[0050] The vibration motion is achieved by the reciprocating movement of the motor mounting body 32 on the linear guide rail, as described in detail below:

[0051] An empty shaft motor 6 is installed inside a motor mounting body 32. A multi-channel polishing head 71 is installed at the end of the empty shaft motor 6, and the end of the voice coil motor 21 is connected to the motor mounting body 32. The motor mounting body 32 has through holes on its side, within which linear bearings 322 are arranged. Two sets of first linear guides 33 on the frame 3 pass through the linear bearings 322 in the through holes on both sides of the motor mounting body 32. When the output shaft of the voice coil motor 21 extends or retracts, the motor mounting body 32 drives the empty shaft motor 6 installed inside to reciprocate along the first linear guides 33 along the axial direction, achieving a vibration effect. During this process, adjusting the extension frequency and extension amount of the voice coil motor 21 can achieve different vibration frequencies and amplitudes.

[0052] In this invention, the polishing compound is delivered from the delivery hose 42 to the hollow shaft motor 6 via a specially designed rotary joint 51. This rotary joint 51 has an inner and outer double-layer structure, with both layers capable of independent rotation along their common axis. After assembly with the hollow shaft motor 6, the axis of the rotary joint 51 coincides with the axis of the hollow shaft motor 6. A second pagoda connector 53 is fixed to the top of the outer layer of the rotary joint 51. The top of the second pagoda connector 53 connects to the delivery hose 42, and the bottom of the second pagoda connector 53 connects to the inner layer 511 of the rotary joint. The end of the inner layer 511 of the rotary joint is designed with external threads, connecting to the shaft end of the hollow shaft motor 6 on the side with internal threads. During the delivery of the polishing compound, it enters the cavity of the inner layer of the rotary joint 51 from the delivery hose 42 through the second pagoda connector 53, and then enters the shaft of the hollow shaft motor 6 through the connection between the inner and outer layers of the rotary joint 51. During this process, the outer layer of the rotary joint 51 is stationary, while the inner layer rotates synchronously with the hollow shaft motor 6.

[0053] When using this polishing tool, the polishing process is as follows:

[0054] Under the action of gear pump 41, the polishing paste enters the delivery hose 42 and then enters the inner cavity of rotary joint 51. Under the pressure of gear pump 41, it continues to move, entering the hollow shaft 61 of the hollow shaft motor 6 from the inner cavity of rotary joint 51, and further reaching the multiple channels of multi-channel polishing head 71. Finally, under the pressure of gear pump 41, the polishing paste will randomly flow into the aperture of multi-channel polishing head 71 and eventually flow out evenly onto the surface of the polished part. During this process, the flow rate and flow volume of the polishing paste can be controlled as needed.

[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A self-feeding vibratory rotary flexible polishing tool, characterized in that: include: The frame (3) is mounted on a robot or CNC machine tool via the first flange (1); Reciprocating vibration unit (2); installed on the frame (3) to move back and forth, controlling the overlap of the polishing trajectory and the width of the polishing band; the reciprocating vibration unit (2) includes a voice coil motor (21), a stroke sensor (22), and a motor control board (23); the end of the output shaft of the voice coil motor (21) is connected to the motor side mounting body (32) of the frame (3), the base of the voice coil motor (21) is connected to the upper mounting plate (31) of the frame (3), and the end of the voice coil motor (21) is connected to the motor control board (23); A polishing compound pumping unit (4) is set above the frame (3) for conveying polishing compound; the polishing compound pumping unit includes a gear pump (41), a delivery hose (42), a first pagoda connector (43), and a first clamp (44); the pump head of the gear pump (41) is connected to the first pagoda connector (43), the other end of the first pagoda connector (43) is connected to the delivery hose (42), and the connection between the first pagoda connector (43) and the delivery hose (42) is secured with the first clamp (44); A motion conversion device (5) is used to convert linear motion into rotational motion. The motion conversion device (5) includes a rotary joint (51), a second clamp (52), a second pagoda joint (53), a fixing device (54), and a mounting bracket (55). The rotary joint (51) is nested inside the mounting bracket (55). The fixing device (54) is located on the outside of the rotary joint (51) and connected to it. One end of the rotary joint (51) is connected to the second pagoda joint (53), and the other end of the second pagoda joint (53) is connected to the delivery hose (42). The multi-channel polishing head device (7) includes a multi-channel polishing head (71), an upper flange (72), and a lower flange (73); the upper flange (72) and the lower flange (73) are respectively fitted to the upper and lower sides of the flange connecting ring of the multi-channel polishing head (71), and the upper flange (72) and the lower flange (73) are connected by multiple fasteners. An empty shaft motor (6) is mounted on the frame (3) and located between the motion conversion device (5) and the multi-channel polishing head device (7). It is used to deliver polishing paste from the polishing paste pumping unit (4) to the multi-channel polishing head device (7) and simultaneously control the rotation of the multi-channel polishing head device (7). The frame (3) includes an upper mounting plate (31), a motor mounting body (32), a first linear guide rail (33), a second linear guide rail (34), and a side mounting plate (35). The upper mounting plate is connected to a first flange. The first linear guide rail (33) and the second linear guide rail (34) are both connected to the upper mounting plate (31) via the side mounting plate (35). The motor mounting body (32)... The motor mounting body (32) is used to install the hollow shaft motor (6), and the motor mounting body (32) can reciprocate along the first linear guide rail (33). The fixing device (54) of the motion conversion device (5) is mounted on the second linear guide rail (34). When the hollow shaft motor (6) reciprocates under the action of the reciprocating vibration unit (2), it synchronously drives the motion conversion device (5) to move synchronously along the second linear guide rail (34).

2. The self-feeding vibratory rotary flexible polishing tool according to claim 1, characterized in that: The motor mounting body (32) has through holes on both sides, and a linear bearing (322) adapted to the first linear guide rail is installed in the through hole. The fixing device (54) has through holes on both sides, and a linear bearing (541) adapted to the second linear guide rail (34) is installed in the through hole.

3. The self-feeding vibratory rotary flexible polishing tool according to claim 1, characterized in that: The voice coil motor (21) is equipped with a stroke sensor (22), and the signal receiving interface of the voice coil motor (21) is connected to the motor control board (23) via a signal line; the end of the output shaft of the voice coil motor (21) is connected to the motor mounting body (32) of the frame (3) via a second flange (24).

4. The self-feeding vibratory rotary flexible polishing tool according to claim 1, characterized in that: The gear pump (41) is connected to one end of the first pagoda connector (43); the other end of the first pagoda connector (43) is connected to one end of the delivery hose (42) and fastened by the first clamp (44); the other end of the delivery hose (42) is connected to the rotary joint (51) of the motion conversion device (5) and fastened by the clamp (52).

5. The self-feeding vibratory rotary flexible polishing tool according to claim 1, characterized in that: The rotary joint (51) includes a rotary joint inner layer (511) and a rotary joint outer layer (512) that can rotate relative to each other. The rotary joint outer layer (512) is connected to one end of the second pagoda joint (53). The rotary joint inner layer (511) is connected to the motor shaft (61) of the hollow shaft motor (6).

6. The self-feeding vibratory rotary flexible polishing tool according to claim 5, characterized in that: The motor shaft (61) of the hollow shaft motor (6) is a tubular shaft. The polishing paste input end of the motor shaft (61) is connected to the inner layer (511) of the rotary joint, and the polishing paste output end of the motor shaft (61) is connected to the upper flange (72) of the multi-channel polishing head device (7).

7. The self-feeding vibratory rotary flexible polishing tool according to claim 1, characterized in that: The multi-channel polishing head (71) has a double-layer structure, including a polishing pad (711) and an inner polishing head (712). The polishing pad (711) is fixedly disposed on the outer layer of the inner polishing head (712). Both the polishing pad (711) and the inner polishing head (712) are provided with multiple channels for the passage of polishing paste.

8. The self-feeding vibratory rotary flexible polishing tool according to claim 7, characterized in that: The cross-section of the multi-channel polishing head (71) is an arc-shaped structure with a low center and high edges.

9. A self-feeding vibratory rotary flexible polishing tool according to claim 1, characterized in that: A sealing ring (713) and a lip seal are provided at the connection point between the flange connecting ring and the upper flange (72).

Images