A rope polishing device for parts with micro-holes

Abstract

The application discloses a rope type polishing device for parts with micro inner holes, which comprises a machine body module, a polishing liquid circulating module, a workpiece fixed motion module and a polishing rope control module are arranged in the machine body module. The workpiece to be polished is installed on the workpiece fixed motion module, and the finishing machining of the workpiece is completed through the polishing rope control module under the condition that the polishing liquid circulating module provides polishing liquid. The rope type polishing device for parts with micro inner holes provided by the application is characterized in that the polishing rope with a polishing working section is used to pass through the long and narrow inner hole, and the inner wall of the part with the micro inner hole is ground and polished by high-speed rotation. Meanwhile, the workpiece is subjected to multi-degree-of-freedom motion, and the conformal polishing of the inner hole of the part with the long and narrow inner hole feature is realized. The polishing efficiency of the device is high, and the polishing quality and polishing uniformity are good.

Description

Technical Field

[0001] This invention belongs to the field of polishing equipment technology, and specifically relates to a rope polishing device for parts with micro-detailed internal holes. Background Technology

[0002] Industrial parts manufactured using metal additive manufacturing technology are widely used in military defense, aerospace, and medical implants due to their advantages such as design freedom, structural integration, and on-demand customization. However, limitations such as the "spheroidization effect" caused by the solidification and adhesion of melt particles during additive manufacturing, the "powder adhesion" caused by insufficient melting in the heat-affected zone leading to powder adhesion, and the "step effect" caused by the inability of the stepped contour of the formed part surface to perfectly match the CAD model result in a large number of pores on the inner and outer surfaces of additively manufactured metal parts, poor surface quality, and inability to meet high serviceability requirements without subsequent polishing, which seriously affects the fatigue life of the parts and the safety and reliability of the overall equipment. Currently, additively manufactured metal parts still rely heavily on manual polishing, but the quality of manual polishing is highly dependent on the operator's experience level, has poor consistency, high labor and time costs, and easily generates toxic and harmful dust during the polishing process, which is harmful to human health. Sandblasting, machine tool grinding, and laser polishing have poor accessibility for processing complex and narrow curved surface structures. Electrochemical polishing is prone to localized corrosion, and this process has poor polishing effect on the inner surface of the workpiece. While abrasive flow machining technology offers high accessibility, it is prone to over-polishing of workpiece edges, which can negatively impact workpiece lifespan. Furthermore, it is unsuitable for polishing the inner surfaces of thin-walled, low-rigidity structural components. Therefore, there is an urgent need to develop advanced polishing technologies, equipment, and processes for parts with elongated, narrow internal holes. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a rope polishing device for parts with micro-detailed internal holes that has good polishing effect, high safety, and reliable performance.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a rope polishing device for parts with micro-detailed internal holes, comprising a body module, a polishing fluid circulation module, a workpiece fixing and motion module and a polishing rope control module. The workpiece to be polished is installed on the workpiece fixing and motion module. When the polishing fluid circulation module provides polishing fluid, the polishing operation of the workpiece is completed by the polishing rope control module.

[0005] Preferably, the polishing fluid circulation module includes a fixture base plate, a waste fluid conduit, a waste fluid tank, a magnetic stirrer, a peristaltic pump, a delivery pipe, a bamboo-joint tube, a workpiece to be processed, a waste fluid inlet quick connector, a positioning bolt, and an inlet quick connector. The waste fluid inlet quick connector is located at the bottom of the fixture base plate and is connected to the waste fluid tank via the waste fluid conduit. The polishing fluid tank is mounted on the magnetic stirrer. The inlet of the peristaltic pump is connected to the polishing fluid tank via a pipe, and the outlet of the peristaltic pump is connected to the inlet quick connector via the delivery pipe. The inlet quick connector is connected to the bamboo-joint tube, which is located above the workpiece to be processed. The workpiece to be processed is located on the fixture base plate. The positioning bolt passes through the fixture base plate, and its end abuts against the workpiece to be processed. The peristaltic pump delivers the polishing fluid from the polishing fluid tank through the delivery pipe and the inlet quick connector, and then the polishing fluid is delivered to the workpiece to be processed via the bamboo-joint tube. The bamboo-joint tube is made of PP polypropylene and is resistant to corrosion from acids, alkalis, salt solutions, and various organic solvents.

[0006] Preferably, the infusion tubing includes a first hose, a second hose, and a third hose. The top of the first hose is connected to the second hose and the third hose, respectively, and the bottom of the first hose is connected to a peristaltic pump. The first hose, the second hose, and the third hose form a Y-shaped tee structure. The second hose and the third hose are connected to the bamboo-joint tube after passing through quick-connect fittings at the inlet. The first hose, the second hose, and the third hose are made of the same material, namely fluororubber, which is resistant to strong corrosion and can withstand most strong acids and alkalis, fuels, and organic solvents.

[0007] Preferably, the workpiece fixing motion module includes a horizontal fixture, a leak-proof side plate, an r-axis rotary slide, an arc adjustment slide, a z-axis lifting platform, a protective plate, a y-axis guide rail and lead screw slide, an x-axis guide rail and lead screw slide, and a fixture cover. The horizontal fixture clamps the workpiece to be processed. The horizontal fixture is fixed to the fixture base plate with bolts and nuts. The leak-proof side plate is connected to both sides of the fixture base plate. The r-axis rotary slide is located at the bottom of the fixture base plate. The fixture cover is connected to the fixture base plate by hinges. The arc adjustment slide, the Z-axis lifting platform, the protective plate, the Y-axis guide rail screw slide, and the X-axis guide rail screw slide are arranged in layers from top to bottom. The bottom of the X-axis guide rail screw slide is fixed to the machine frame. The Y-axis guide rail screw slide and the X-axis guide rail screw slide are perpendicular to each other. The X-axis guide rail screw slide drives the Y-axis guide rail screw slide to move. The Y-axis guide rail screw slide drives the Z-axis lifting platform to move through the protective plate. The Z-axis lifting platform pushes the arc adjustment slide to move up and down.

[0008] Preferably, the polishing rope control module includes a polishing rope, a polishing rope fixing head, an anti-loosening nut, a motor, a motor fixing ring, a perforated coupling, a shaft retainer, and a connecting shaft. The motor fixing ring and the shaft retainer are respectively fixed on the motor mounting plate. The motor passes through the motor fixing ring and is fixedly connected to it. The end of the motor shaft is connected to the end of the connecting shaft through the perforated coupling. The connecting shaft passes through the shaft retainer. The other end of the connecting shaft is connected to the end of the polishing rope fixing head through the anti-loosening nut. The other end of the polishing rope fixing head is connected to the polishing rope. When the motor is working, it drives the polishing rope to rotate sequentially through the perforated coupling, the connecting shaft, and the polishing rope fixing head to complete the polishing operation for the workpiece.

[0009] Preferably, the polishing rope can be made of materials such as polyurethane, sandpaper of different mesh sizes, metallographic polishing cloth, etc., which have polishing capabilities; or wires with a certain degree of flexibility such as steel wire rope, soft carbon wire, copper wire, etc. The polishing abrasive can be made of materials such as alumina, silicon oxide, and cerium dioxide.

[0010] The beneficial effects of this invention are as follows: The rope-type polishing device provided by this invention for parts with micro-sized internal holes adds polishing fluid containing polishing abrasive grains to the micro-sized internal hole during polishing. A polishing rope with a polishing working section passes through the narrow internal hole, and its high-speed rotation grinds and polishes the inner wall of the workpiece with the micro-sized internal hole. Simultaneously, the workpiece undergoes multi-degree-of-freedom motion, achieving conformal polishing of the internal hole of workpieces with narrow internal hole characteristics. This device can achieve internal hole polishing of additively manufactured metal parts, machined metal parts, and other non-metallic parts with internal hole characteristics, with high polishing efficiency, good polishing quality, and good polishing uniformity. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a rope polishing device for parts with micro-detailed internal holes according to the present invention;

[0012] Figure 2 This is a schematic diagram of the frame structure of a rope polishing device for parts with micro-holes according to the present invention.

[0013] Figure 3 This is a schematic diagram of the polishing fluid circulation module structure of the present invention;

[0014] Figure 4 This is a side view of the polishing fluid circulation module of the present invention;

[0015] Figure 5 This is a schematic diagram of the principle structure of the polishing fluid circulation module of the present invention;

[0016] Figure 6 This is a schematic diagram of the workpiece position structure according to the present invention;

[0017] Figure 7This is a schematic diagram of the workpiece fixing motion module structure of the present invention;

[0018] Figure 8 This is a schematic diagram of the lateral structure of the workpiece fixing motion module of the present invention;

[0019] Figure 9 This is a schematic diagram of the forward structure of the workpiece fixing motion module of the present invention;

[0020] Figure 10 This is a schematic diagram of the main structure of the polishing rope control module of the present invention;

[0021] Figure 11 This is a schematic diagram of the structural composition of the polishing rope control module of the present invention;

[0022] Figure 12 This is a comparison diagram of the surface roughness Sa1312nm (surface morphology fluctuation 0-9259nm) before polishing and the surface roughness Sa72.8nm (surface morphology fluctuation 0-694nm) after polishing in this invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Machine frame; 2. Motor mounting plate; 3. Base plate; 4. Splash guard; 5. Splash cover; 6. Side plate of the machine casing; 7. Fixture base plate; 8. Waste liquid conduit; 9. Waste liquid tank; 10. Magnetic stirrer; 11. Peristaltic pump; 12. Infusion tube; 13. Bamboo-joint tube; 14. Workpiece to be processed; 15. Quick connector for waste liquid outlet; 16. Positioning bolt; 17. Quick connector for liquid inlet; 18. Horizontal fixture; 19. Leak-proof side plate ; 20. r-axis rotary slide; 21. arc adjustment slide; 22. z-axis lifting platform; 23. protective plate; 24. y-axis guide rail and lead screw slide; 25. x-axis guide rail and lead screw slide; 26. clamp cover; 27. polishing rope; 28. polishing rope fixing head; 29. ​​anti-loosening nut; 30. motor; 31. motor retaining ring; 32. plum blossom coupling; 33. shaft retainer; 34. connecting shaft; 121. hose; 122. Y-type tee connector. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 12 The present invention provides a rope polishing device for parts with micro-detailed internal holes, including a body module, which includes a polishing fluid circulation module, a workpiece fixing and motion module, and a polishing rope control module. The workpiece to be polished is installed on the workpiece fixing and motion module. When the polishing fluid is provided by the polishing fluid circulation module, the polishing operation of the workpiece is completed by the polishing rope control module.

[0026] The body module includes a body frame 1, a motor mounting plate 2, a base plate 3, a splash guard 4, a splash cover 5, and a chassis side plate 6. The motor mounting plate 2 is located on the top of the body frame 1, the base plate 3 is located at the bottom of the body frame 1, the splash guard 4 is placed on the top of the body frame 1, the splash guard 4 and the splash cover 5 are connected by hinges, and the chassis side plate 6 is located on the side of the body frame 1.

[0027] The main frame 1 is assembled from 40 aluminum alloy profiles. The motor mounting plate 2, the base plate 3, and the splash guard 4 are fixed to the main frame 1 with T-nuts.

[0028] In this embodiment, the side panel 6 of the chassis is installed with the frame 1 using a single-lock. The bottom of the splash shield 4 is open, and the top of the splash shield 4 has a splash shield opening. The end of the splash cover 5 is connected to the upper edge of the splash shield opening via a hinge. The splash cover 5 has a bent structure, and it can close with the splash shield opening during opening and closing, thereby ensuring the normal operation of the internal components of the splash shield 4.

[0029] The polishing slurry circulation module includes a fixture base plate 7, a waste slurry conduit 8, a waste slurry tank 9, a magnetic stirrer 10, a peristaltic pump 11, a delivery pipe 12, a bamboo-joint tube 13, a workpiece 14, a waste slurry inlet quick connector 15, a positioning bolt 16, and a liquid inlet quick connector 17. The waste slurry inlet quick connector 15 is located at the bottom of the fixture base plate 7 and is connected to the waste slurry tank 9 via the waste slurry conduit 8. The polishing slurry tank is mounted on the magnetic stirrer 10, and the liquid inlet of the peristaltic pump 11 is connected to the polishing slurry tank via a pipe. The outlet of 11 is connected to the inlet quick connector 17 via the inlet pipe 12. The inlet quick connector 17 is connected to the bamboo tube 13. The bamboo tube 13 is located above the workpiece 14 being processed. The workpiece 14 is located on the fixture base plate 7. The positioning bolt 16 passes through the fixture base plate 7. The end of the positioning bolt 16 abuts against the workpiece 14 being processed. The peristaltic pump 11 delivers the polishing liquid in the polishing liquid tank through the inlet pipe 12 and the inlet quick connector 17 in sequence, and then the polishing liquid is delivered to the workpiece 14 being processed by the bamboo tube 13.

[0030] In this embodiment, the polishing fluid contains abrasive particles, which are suspended particles with certain chemical activity in the polishing fluid. Under the action of external mechanical force, they can accelerate the removal of surface materials and achieve rapid planarization. The polishing abrasive particles are made of one or more of the following materials: silicon dioxide, aluminum oxide, silicon oxide, cerium dioxide, etc.

[0031] Bamboo-joint tube 13 is made of PP polypropylene, which is resistant to corrosion from acids, alkalis, salt solutions and various organic solvents.

[0032] The infusion tubing 12 includes a first hose 121, a second hose 122, and a third hose 123. The top of the first hose 121 is connected to the second hose 122 and the third hose 123 respectively, and the bottom of the first hose 121 is connected to the peristaltic pump 11. The first hose 121, the second hose 122, and the third hose 123 form a Y-shaped tee structure. The second hose 122 and the third hose 123 are connected to the bamboo tube 13 after passing through the inlet quick connector 17.

[0033] The first hose 121, the second hose 122, and the third hose 123 are made of the same material, fluororubber, which is resistant to strong corrosion and can withstand most strong acids and alkalis, fuels, and organic solvents.

[0034] In this embodiment, there are two waste liquid outlet quick connectors 15 located at the bottom ends of the fixture base plate 7. There are four positioning bolts 16, providing stable support for the workpiece 14. The inlet quick connector 17 is threadedly connected by welding nuts of the corresponding size onto the fixture base plate 7. There are two waste liquid conduits 8, each connected to one of the two waste liquid outlet quick connectors 15. The workpiece 14 is positioned and fixed by the fixture base plate 7, the positioning bolts 16, and the workpiece fixing motion module, including the horizontal fixture 18.

[0035] The polishing slurry circulation process of the present invention is as follows: the polishing slurry is stored in a container on the magnetic stirrer 10. The polishing slurry is powered by the peristaltic pump 11 and flows from the container through the inlet pipe 12, the inlet quick connector 17, and finally sprayed from the bamboo tube 13 to the processing area of ​​the workpiece 14. It is then collected by the fixture base plate 7 and flows from the waste liquid outlet at the bottom of the fixture base plate 7 through the waste liquid outlet quick connector 15 and the waste liquid conduit 8 to the waste liquid tank 9, thus realizing the storage, use, waste liquid collection, and waste liquid storage of the polishing slurry.

[0036] The workpiece fixing motion module includes a horizontal fixture 18, a leak-proof side plate 19, an r-axis rotary slide 20, an arc-adjustable slide 21, a z-axis lifting platform 22, a protective plate 23, a y-axis guide rail and lead screw slide 24, an x-axis guide rail and lead screw slide 25, and a fixture cover 26. The horizontal fixture 18 clamps the workpiece 14 to be processed. The horizontal fixture 18 is fixed to the fixture base plate 7 by bolts and nuts. The leak-proof side plate 19 is connected to both sides of the fixture base plate 7. The r-axis rotary slide 20 is located at the bottom of the fixture base plate 7. The fixture cover 26 is connected to the fixture base plate 7 by hinges. The angle adjustment slide 21, z-axis lifting platform 22, protective plate 23, y-axis guide rail screw slide 24, and x-axis guide rail screw slide 25 are arranged in a stacked manner from top to bottom. The bottom of the x-axis guide rail screw slide 25 is fixedly connected to the machine frame 1. The y-axis guide rail screw slide 24 and the x-axis guide rail screw slide 25 are perpendicular to each other. The x-axis guide rail screw slide 25 drives the y-axis guide rail screw slide 24 to move. The y-axis guide rail screw slide 24 drives the z-axis lifting platform 22 to move through the protective plate 23. The z-axis lifting platform 22 pushes the angle adjustment slide 21 to move up and down. The angle adjustment slide 21 is located at the bottom of the r-axis rotary slide 20, and the angle adjustment slide 21 drives the r-axis rotary slide 20 to make fine adjustments to the angle.

[0037] The fixture base plate 7 is fixed to two horizontal fixtures 18 with bolts and nuts, and waterproof adhesive is applied around the bolt heads. Leak-proof side plates 19 are glued to both sides of the fixture base plate 7. The fixture base plate 7 is fixed to the r-axis rotary slide 20 with bolts, and waterproof adhesive is applied around the bolt heads. The r-axis rotary slide 20, the arc adjustment slide 21, the z-axis lifting platform 22, the protective plate 23, the y-axis guide rail screw slide 24, and the x-axis guide rail screw slide 25 are connected by corresponding bolts.

[0038] In this embodiment, the horizontal clamp 18 is the existing elbow clamp horizontal high-arm type MC01-3, the r-axis rotary table 20 is the existing model FR5912, and the arc adjustment slide 21 is the existing model FEXG6050. The z-axis lifting table 22 is the existing model WMZ-20-G.

[0039] The workpiece clamping process of this invention is as follows: First, the workpiece is placed on four positioning bolts 16 and clamped by two horizontal clamps 18. Fine-tuning of the workpiece is achieved by adjusting the positioning bolts 16. The moving platform control integrates the motors for the r-axis rotary slide 20, the arc adjustment slide 21, the z-axis lifting platform 22, the protective plate 23, the y-axis guide rail lead screw slide 24, and the x-axis guide rail lead screw slide 25.

[0040] The polishing rope control module includes a polishing rope 27, a polishing rope fixing head 28, an anti-loosening nut 29, a motor 30, a motor fixing ring 31, a plum blossom coupling 32, a shaft retainer 33, and a connecting shaft 34. The motor fixing ring 31 and the shaft retainer 33 are respectively fixed on the motor mounting plate 2. The motor 30 passes through the motor fixing ring 31 and is fixedly connected to it. The rotating shaft end of the motor 30 is connected to the end of the connecting shaft 34 through the plum blossom coupling 32. The connecting shaft 34 passes through the shaft retainer 33. The other end of the connecting shaft 34 is connected to the end of the polishing rope fixing head 28 through the anti-loosening nut 29. The other end of the polishing rope fixing head 28 is connected to the polishing rope 27. When the motor 30 is working, it drives the polishing rope 27 to rotate sequentially through the plum blossom coupling 32, the connecting shaft 34, and the polishing rope fixing head 28 to complete the polishing operation for the workpiece 14.

[0041] Two polishing rope control modules are symmetrically arranged on two motor mounting plates 2, and the two polishing rope control modules are connected by polishing ropes 27. The polishing ropes 27 are made of polyurethane and steel wire rope.

[0042] In actual use, a polishing machine control module is installed on the machine frame 1. The polishing machine control module is electrically connected to the electrical control equipment on the machine frame 1, and controls the movement of the corresponding equipment through the polishing machine control module. The polishing machine control module is an existing programmable device. The polishing rope fixing heads 28, connected to both sides of the polishing rope 27, are clamped by fully threaded screws. The middle of the polishing rope 27 is the processing area. The polishing rope fixing heads 28 and the connecting shaft 34 are connected by threads and secured with anti-loosening nuts 29. The motor 30 and the motor fixing ring 31 are clamped by bolts and anti-loosening nuts. The motor fixing ring 31 is fixed to the motor mounting plate 2 by bolts and anti-loosening nuts. The plum blossom coupling 32 connects the motor 30 rotor and the connecting shaft 34. The shaft retainers 33 on both sides are fixed to the motor mounting plate 2 by bolts and anti-loosening nuts.

[0043] This invention also discloses a polishing method for use with a rope polishing device for parts with micro-detailed internal holes, comprising the following steps:

[0044] S1. Obtain the part to be polished.

[0045] S2. Obtain the dimensions of the surface / hole to be polished and other information about the workpiece to be polished, and manufacture the polishing rope. 27. Set the polishing machine parameters and select the abrasive.

[0046] The manufacturing of polishing rope 27 in step S2 includes the following steps:

[0047] S21. Determine the thickness and length of the polishing material according to the size of the surface / hole to be polished, and make a polishing rope of appropriate diameter.

[0048] S22. Select the appropriate type of polishing fluid according to the material of the part to be polished.

[0049] S23. Manufacturing polishing rope.

[0050] Step S2, determining the polishing machine parameters, includes the following steps:

[0051] S211. Select a suitable fixture based on the size of the workpiece to be shot.

[0052] S212. Quickly generate motion paths based on 3D models.

[0053] S213. Based on the material removal rate and surface quality of the polishing rope on the flat workpiece under different working conditions, establish a mathematical model for the flattening material removal of the workpiece material to be polished, and select appropriate polishing speed, feed rate, and workpiece movement speed for fine polishing and rough polishing in the two-step method.

[0054] The polishing machine in this step is a rope polishing device for parts with micro-holes, as described in this invention.

[0055] S3, Install polishing rope 27, Fix the polishing part, and write the polishing control program.

[0056] The polishing control program in step S3 includes the motion path during polishing, which is determined based on the surface features of the hole to be polished, the polishing rope, and the required polishing depth. The polishing program is written into the polishing machine control module, which controls the corresponding settings on the machine frame 1. The polishing control program determines the workpiece movement speed and feed rate based on the polishing depth and material removal rate to ensure that the workpiece achieves the required surface quality after polishing.

[0057] A polishing program is written based on the desired polishing parameters and processing path, and the polishing machine automatically polishes the workpiece based on the program.

[0058] Step S3, installing the polishing rope, includes the following steps:

[0059] S31. Insert both ends of the polishing rope into the holes of the polishing rope fixing head, and clamp it by screwing in the studs through the two pairs of threaded holes on the side of the polishing rope fixing head. When clamping, it is necessary to ensure that the polishing rope is in the center position.

[0060] S32. Screw the polishing rope fixing heads at both ends into the corresponding connecting shafts, ensuring that the polishing ropes have a certain tension when screwing them in.

[0061] S33. Adjust the polishing rope to make it horizontal.

[0062] S34. Rotate the anti-loosening nut to align it with the polishing rope fixing head.

[0063] Step S3, fixing the workpiece, includes the following steps:

[0064] S311. Place the workpiece in the designated position, align it with the installation position, and clamp it with two horizontal clamps.

[0065] S312. Adjust the positioning bolts to ensure the workpiece reference surface is horizontal. S4. The polishing machine performs polishing according to the control program.

[0066] The polishing process in step S4 is divided into rough polishing and fine polishing.

[0067] S5. Check if the polishing has achieved the desired effect. If "yes", the process ends; otherwise, polish again.

[0068] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of the invention, and should be understood that the scope of protection of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed in this invention without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A rope-type polishing apparatus for parts with micro-detailed internal holes, characterized in that: The machine body module includes a polishing fluid circulation module, a workpiece fixing and motion module, and a polishing rope control module. The workpiece to be polished is installed on the workpiece fixing and motion module. With the polishing fluid provided by the polishing fluid circulation module, the polishing rope control module completes the finishing process of the workpiece. The body module includes a body frame (1), a motor mounting plate (2), a base plate (3), a splash shield (4), a splash cover (5), and a chassis side plate (6). The motor mounting plate (2) is located on the top of the body frame (1), the base plate (3) is located at the bottom of the body frame (1), the splash shield (4) is placed on the top of the body frame (1), the splash shield (4) and the splash cover (5) are connected by hinges, and the chassis side plate (6) is located on the side of the body frame (1). The body frame (1) is assembled from 40 aluminum alloy profiles. The motor mounting plate (2), the base plate (3), and the splash guard (4) are respectively fixed to the body frame (1) by T-nuts. The polishing fluid circulation module includes a fixture base plate (7), a waste fluid conduit (8), a waste fluid tank (9), a magnetic stirrer (10), a peristaltic pump (11), a delivery pipe (12), a bamboo-joint pipe (13), a workpiece (14), a waste fluid inlet quick connector (15), a positioning bolt (16), and an inlet quick connector (17). The waste fluid inlet quick connector (15) is located at the bottom of the fixture base plate (7). The waste fluid inlet quick connector (15) is connected to the waste fluid tank (9) through the waste fluid conduit (8). The polishing fluid tank is installed on the magnetic stirrer (10). The inlet of the peristaltic pump (11) is connected to the polishing fluid tank through a pipe. The peristaltic pump (11)... The outlet is connected to the inlet quick connector (17) via the inlet pipe (12), and the inlet quick connector (17) is connected to the bamboo tube (13). The bamboo tube (13) is located above the workpiece (14) being processed, and the workpiece (14) being processed is located on the fixture base plate (7). The positioning bolt (16) passes through the fixture base plate (7), and the end of the positioning bolt (16) abuts against the workpiece (14). The peristaltic pump (11) delivers the polishing liquid in the polishing liquid tank through the inlet pipe (12) and the inlet quick connector (17) in sequence, and then the polishing liquid is delivered to the workpiece (14) by the bamboo tube (13). The bamboo tube (13) is made of PP polypropylene and is resistant to corrosion from acids, alkalis, salt solutions and various organic solvents. Two quick-connectors (15) for waste liquid outlets are located at the bottom ends of the fixture base plate (7); four positioning bolts (16) provide stable support for the workpiece (14); quick-connectors (17) for inlet liquid outlets are connected by welding nuts of the corresponding size onto the fixture base plate (7); two waste liquid conduits (8) are connected to the two quick-connectors (15) for waste liquid outlets; the workpiece (14) for processing is positioned and fixed by the fixture base plate (7), positioning bolts (16) and workpiece fixing motion module including horizontal fixture (18); The infusion tube (12) includes a first hose (121), a second hose (122) and a third hose (123). The top of the first hose (121) is connected to the second hose (122) and the third hose (123) respectively. The bottom of the first hose (121) is connected to the peristaltic pump (11). The first hose (121), the second hose (122) and the third hose (123) form a Y-shaped three-way structure. The second hose (122) and the third hose (123) are connected to the bamboo tube (13) after passing through the inlet quick connector (17). The first hose (121), the second hose (122) and the third hose (123) are made of the same material, namely fluororubber, which is resistant to strong corrosion and can withstand most strong acids and alkalis, fuels and organic solvents. The polishing rope control module includes a polishing rope (27), a polishing rope fixing head (28), an anti-loosening nut (29), a motor (30), a motor fixing ring (31), a plum blossom coupling (32), a shaft retainer (33), and a connecting shaft (34). The motor fixing ring (31) and the shaft retainer (33) are respectively fixed on the motor mounting plate (2). The motor (30) passes through the motor fixing ring (31) and is fixedly connected to the motor fixing ring (31). The shaft end of the motor (30) is connected to the connecting shaft (34) via the plum blossom coupling (35). 2) Connected to the end of the connecting shaft (34), the connecting shaft (34) passes through the shaft retainer (33), and the other end of the connecting shaft (34) is connected to the end of the polishing rope fixing head (28) through the anti-loosening nut (29). The other end of the polishing rope fixing head (28) is connected to the polishing rope (27). When the motor (30) is working, it drives the polishing rope (27) to rotate through the plum blossom coupling (32), the connecting shaft (34) and the polishing rope fixing head (28) in sequence, so as to complete the finishing process for the workpiece (14). The workpiece fixing motion module includes a horizontal fixture (18), a leak-proof side plate (19), an r-axis rotary slide (20), an arc adjustment slide (21), a z-axis lifting platform (22), a protective plate (23), a y-axis guide rail screw slide (24), an x-axis guide rail screw slide (25), and a fixture cover (26). The horizontal fixture (18) clamps the workpiece (14) to be processed. The horizontal fixture (18) is fixed to the fixture base plate (7) by bolts and nuts. The leak-proof side plate (19) is connected to both sides of the fixture base plate (7). The r-axis rotary slide (20) is located at the bottom of the fixture base plate (7). The fixture cover (26) is connected to the fixture base plate (7) by hinges. The arc adjustment slide (21) and the z-axis lifting platform (22) are connected to the fixture base plate (7). The lowering platform (22), the protective plate (23), the y-axis guide rail screw slide (24), and the x-axis guide rail screw slide (25) are stacked sequentially from top to bottom. The bottom of the x-axis guide rail screw slide (25) is fixedly connected to the machine frame (1). The y-axis guide rail screw slide (24) and the x-axis guide rail screw slide (25) are perpendicular to each other. The x-axis guide rail screw slide (25) drives the y-axis guide rail screw slide (24) to move. The y-axis guide rail screw slide (24) drives the z-axis lifting platform (22) to move through the protective plate (23). The z-axis lifting platform (22) pushes the arc adjustment slide (21) to move up and down. A polishing method for using a rope polishing device for parts with micro-detailed internal holes includes the following steps: S1. Obtain the part to be polished; S2. Obtain the dimensions of the surface / hole to be polished and other information about the workpiece to be polished, manufacture the polishing rope (27), set the polishing machine parameters and select the abrasive; The manufacturing of the polishing rope (27) in step S2 includes the following steps: S21. Determine the thickness and length of the polishing material according to the size of the surface / hole to be polished, and make a polishing rope of appropriate diameter; S22. Select the appropriate type of polishing fluid according to the material of the part to be polished; S23. Manufacturing polishing ropes; Step S2, determining the polishing machine parameters, includes the following steps: S211. Select a suitable fixture according to the size of the workpiece to be shot; S212. Quickly generate motion paths based on 3D models; S213. Based on the material removal rate and surface quality of the polishing rope on the flat workpiece under different working conditions, establish a mathematical model for the flattening material removal of the workpiece material to be polished, and select appropriate polishing speed, feed rate and workpiece movement speed for fine polishing and rough polishing in the two-step method. S3. Install the polishing rope (27), fix the polishing part, and write the polishing control program; S4. The polishing machine performs polishing according to the control program; S5. Check if the polishing has achieved the desired effect. If "yes", the process ends; otherwise, repeat the polishing process.

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