A milling device and a milling method

Abstract

The present invention discloses a milling device and a milling method. The device includes a milling machine main body and a thin-wall support structure. The thin-wall support structure includes a clamping disk, which is used to be clamped on the milling machine main body to fix the thin-wall support structure. A connecting rod is arranged on the clamping disk, and a plurality of first motors arranged in a ring are arranged on the connecting rod. The first motors are connected to telescopic support rods. The first motors are used to control the telescopic support rods to expand and contract to support cylindrical thin-wall parts with different inner diameter sizes. Arc-top extension rods are respectively movably connected to both sides of the telescopic support rods. The top of the telescopic support rods and the arc-top extension rods are commonly connected to a support arc top. The arc-top extension rods are used to adjust the arc top of the support arc top to fit the inner diameter of the cylindrical thin-wall parts. A force-measuring sensor for sensing pressure and a vibrator for eliminating stress are also arranged on the telescopic support rods. The present invention effectively avoids the milling deformation problem of cylindrical thin-wall parts with different sizes.

Description

Technical Field

[0001] The present invention relates to the field of milling machining, and particularly to a milling device and a milling method. Background Art

[0002] Milling is a mechanical machining method that uses a rotating multi-edge tool to cut a workpiece. Through the relative movement between the tool and the workpiece, materials are removed to form the required shape, size, and surface quality. It is one of the most common machining processes in modern manufacturing and is widely used in the machining of materials such as metals, plastics, and composite materials.

[0003] Cylindrical thin-walled structure parts have a small wall thickness, low mass, and low bending / torsion stiffness. During traditional milling, local stress is likely to exceed the material yield strength, resulting in plastic deformation. The prior art extracts a solid cylinder that fits the inner diameter of the cylindrical thin-walled structure part during milling and sleeved the part of the cylindrical thin-walled structure on the solid cylinder, so that the solid cylinder plays a supporting role for the part during the milling process of the cylindrical thin-walled structure part, avoiding deformation caused by excessive milling force. However, when machining cylindrical thin-walled structure parts of different sizes, it is often necessary to mill solid cylinders of corresponding sizes for adaptive support, with poor flexibility. At the same time, the solid cylinder only plays a supporting role, and stress concentration still occurs during the milling process, resulting in deformation. Summary of the Invention

[0004] In view of the above-mentioned partial defects of the prior art, the technical problem to be solved by the present invention is to provide a milling device and a milling method, aiming to provide a milling device that can adapt to the support of cylindrical thin-walled parts of different sizes, and can release stress in time during the milling process, thereby avoiding the milling deformation problem of cylindrical thin-walled parts.

[0005] To achieve the above object, the first aspect of the present invention discloses a milling device applied to the milling of cylindrical thin-walled parts. The milling device includes: a milling machine main body and a thin-wall support structure. The thin-wall support structure includes a clamping disk, which is used to be clamped on the milling machine main body to fix the thin-wall support structure. A connecting rod is arranged on the clamping disk, and a plurality of first motors arranged in a ring are arranged on the connecting rod. The first motor is connected to a telescopic support rod, and the first motor is used to control the telescopic support rod to expand and contract to support the cylindrical thin-walled parts with different inner diameter sizes. Arc top extension rods are respectively movably connected to both sides of the telescopic support rod. The top of the telescopic support rod and the arc top extension rods are commonly connected to a support arc top. The arc top extension rod is used to adjust the arc top of the support arc top to adapt to the inner diameter of the cylindrical thin-walled part. A force sensor and a vibrator for sensing the pressure received by the telescopic support rod are also arranged on the telescopic support rod;

[0006] The milling device is configured to: in response to obtaining the inner diameter of the thin-walled cylindrical part, adjust the support rod and the arc top of the thin-walled support structure, so that the length of the support rod and the radian of the arc top sequentially match the inner diameter of the thin-walled cylindrical part, and make the initial force measurement data of the force measurement sensors on each telescopic support rod match; in response to the completion of the stage milling of the thin-walled cylindrical part, obtain the first force measurement data of the force measurement sensors, obtain the first stress distribution of the thin-walled cylindrical part according to the first force measurement data, and control each vibrator to vibrate at a corresponding vibration frequency to release the stress of the thin-walled cylindrical part according to the first stress distribution.

[0007] Optionally, a first threaded area is provided on the telescopic support rod, and a first threaded ring is threadedly connected to the first threaded area. Arc top extension rods are respectively movably connected to both sides of the first threaded ring; the first threaded ring drives the arc top extension rods to rise or fall by spirally moving up and down in the first threaded area to change the opening amplitude, thereby adjusting the radian of the support arc top; wherein, the first threaded ring is movably connected to the arc top extension rod, and the arc top extension rod will not rotate together with the first threaded ring.

[0008] Optionally, a second motor is provided on the telescopic support rod, and arc top extension rods are respectively connected to both sides of the second motor. The second motor is used to drive the opening amplitude of the arc top extension rods, thereby adjusting the radian of the support arc top.

[0009] Optionally, the matching of the initial force measurement data of the force measurement sensors on each telescopic support rod includes:

[0010] The initial force measurement data of the force measurement sensors on each telescopic support rod are the same, or the difference between the initial force measurement data does not exceed a first preset error.

[0011] A second aspect of the present invention discloses a milling method, which is applied to the milling device in any one of the above, and includes:

[0012] Step S1, obtain the first inner diameter of the thin-walled cylindrical part with internal processing completed, and obtain the first telescopic length of the telescopic support rod and the first radian of the support arc top according to the first inner diameter;

[0013] Step S2, adjust the telescopic support rod and the support arc top respectively according to the first telescopic length and the first radian; sleeved the thin-walled cylindrical part on the telescopic support rod, and control the first motor to perform a first adjustment, so that the initial force measurement data of the force measurement sensors corresponding to each telescopic support rod match;

[0014] Step S3: Control the milling machine main body to perform rough machining milling on the outer wall of the cylindrical thin-walled part; in response to the completion of the rough machining milling, obtain the second force measurement data of each force sensor, and based on the second force measurement data, obtain the second stress distribution of the cylindrical thin-walled part; based on the second stress distribution, obtain the second vibration frequency corresponding to each vibrator, and control each vibrator to perform vibration treatment on the cylindrical thin-walled part at its corresponding second vibration frequency to release the stress generated by the rough machining milling of the cylindrical thin-walled part.

[0015] Step S4: Control the milling machine main body to perform finish machining milling on the outer wall of the cylindrical thin-walled part; in response to the completion of the finish machining milling, obtain the third force measurement data of each force sensor, and based on the third force measurement data, obtain the third stress distribution of the cylindrical thin-walled part; based on the third stress distribution, obtain the third vibration frequency corresponding to each vibrator, and control each vibrator to perform vibration treatment on the cylindrical thin-walled part at its corresponding third vibration frequency to release the stress generated by the finish machining milling of the cylindrical thin-walled part, and obtain the finished product of the cylindrical thin-walled part.

[0016] Optionally, when performing vibration treatment on the cylindrical thin-walled part in step S3 and step S4, the method further includes:

[0017] Heat the cylindrical thin-walled part to a heating temperature of 140 ± 10 °C, then keep it warm for 30 - 45 min, and air-cool it to room temperature.

[0018] Optionally, in step S2, adjusting the telescopic support rod and the support arc top according to the first telescopic length and the first radian respectively includes:

[0019] Adjust the telescopic support rod to the first telescopic length;

[0020] Control the up and down movement of the arc top extension rod corresponding to the support arc top to drive the opening amplitude of the arc top extension rod, and then adjust the radian of the support arc top to the first radian.

[0021] Optionally, in step S2, sleeving the cylindrical thin-walled part on the telescopic support rod and controlling the first motor to perform the first adjustment so that the initial force measurement data of the force sensors corresponding to each telescopic support rod match, includes:

[0022] Sleeve the cylindrical thin-walled part on the telescopic support rod so that the connecting rod is located at the center position inside the cylindrical thin-walled part;

[0023] Control each of the first motors to perform a first adjustment so that each telescopic support rod undergoes micro-telescoping, thereby making the initial force measurement data of each force measurement sensor the same.

[0024] Advantages of the present invention: 1. The telescopic structure of the telescopic support rod and the arc adjustment structure of the support arc top in the present invention can adapt to the support of cylindrical thin-walled parts with different inner diameters, solving the problem of poor flexibility of the special support parts that need to be milled in the prior art, greatly improving the flexibility of the thin-walled support structure, and reducing resource waste. In addition, compared with single-point support, the support arc top of the present invention has a larger support range, avoiding the problem of concentrated support force. 2. The present invention is provided with force measurement sensors, and when the cylindrical thin-walled part is loaded on the thin-walled support structure, the initial force measurement data of the force measurement sensors on each telescopic support rod are matched by adjusting the first motor. This can make the magnitudes of the support forces in each part of the cylindrical thin-walled part consistent, making the support force on the cylindrical thin-walled part uniform, and avoiding the situation of stress concentration caused by uneven support. 3. The present invention is also provided with vibrators. By the combined use of the vibrators and the force measurement sensors, when the stage milling process is completed, according to the first force measurement data, the first stress distribution of the cylindrical thin-walled part can be obtained. According to the first stress distribution, each vibrator is controlled to vibrate at the corresponding vibration frequency to release the stress of the cylindrical thin-walled part. Vibrating at the corresponding frequency according to the stress distribution situation can ensure the complete release of stress, thereby avoiding the deformation problem caused by stress concentration.

[0025] In summary, the present invention provides a milling device that can adapt to the support of cylindrical thin-walled parts of different sizes, and can release stress in a timely manner during the milling process, thereby avoiding the milling deformation problem of cylindrical thin-walled parts. Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of a thin-walled support structure corresponding to a milling device provided by a specific embodiment of the present invention;

[0027] Figure 2 is a top-view structural schematic diagram of a thin-walled support structure corresponding to a milling device provided by a specific embodiment of the present invention;

[0028] Figure 3 is a structural schematic diagram of a telescopic support rod provided by a specific embodiment of the present invention;

[0029] Figure 4 is a flow schematic diagram of a milling method provided by a specific embodiment of the present invention. Detailed Embodiments

[0030] The present invention discloses a milling device and a milling method. Those skilled in the art can draw on the content of this article and appropriately improve the technical details to implement. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments. Relevant personnel can obviously make changes, or make appropriate changes and combinations, to the methods and applications described herein without departing from the content, spirit, and scope of the present invention to implement and apply the technology of the present invention.

[0031] After research by the applicant, it is found that: the wall thickness of the cylindrical thin-walled structure part is small, the mass is light, and the bending / torsional stiffness is low. During traditional milling, the local force is likely to exceed the yield strength of the material, resulting in plastic deformation. At the same time, during the milling process of the cylindrical thin-walled structure part, it is also necessary to release the stress generated by milling in a timely manner to avoid deformation caused by stress concentration. The prior art extracts a solid cylinder adapted to the inner diameter of the cylindrical thin-walled structure part and sleeved the part of the cylindrical thin-walled structure on the solid cylinder, so that the solid cylinder plays a supporting role in the milling process of the cylindrical thin-walled structure part to prevent it from being deformed due to excessive milling force. However, when processing cylindrical thin-walled structure parts of different sizes, it is often necessary to mill out solid cylinders of corresponding sizes for adaptive support, with poor flexibility. At the same time, the solid cylinder only plays a supporting role, and stress concentration still occurs during the milling process, resulting in deformation.

[0032] Therefore, the embodiment of the present invention provides a milling device for milling cylindrical thin-walled parts, as Figures 1 - 3 shown, the milling device includes: a milling machine main body and a thin-walled support structure. The thin-walled support structure includes a clamping disc 1, and the clamping disc 1 is used to be clamped on the milling machine main body to fix the thin-walled support structure. A connecting rod 2 is arranged on the clamping disc 1, and a plurality of first motors 3 arranged in a ring are arranged on the connecting rod 2. The first motor 3 is connected to a telescopic support rod 4. The first motor 3 is used to control the telescopic support rod 4 to expand and contract to support cylindrical thin-walled parts with different inner diameter sizes. Both sides of the telescopic support rod 4 are movably connected to an arc top extension rod 5. The top of the telescopic support rod 4 and the arc top extension rod 5 are jointly connected to a support arc top 6. The arc top extension rod 5 is used to adjust the arc top of the support arc top 6 to adapt to the inner diameter of the cylindrical thin-walled part. A force sensor 7 and a vibrator 8 for sensing the pressure received by the telescopic support rod 4 are also arranged on the telescopic support rod 4.

[0033] The milling device is configured to: in response to obtaining the inner diameter of the thin-walled cylindrical part, adjust the support rods and the arc top of the thin-walled support structure so that the lengths of the support rods and the radian of the arc top match the inner diameter of the thin-walled cylindrical part in sequence, and make the initial force measurement data of the force sensors 7 on each telescopic support rod 4 match; in response to the completion of the stage milling of the thin-walled cylindrical part, obtain the first force measurement data of the force sensor 7, obtain the first stress distribution of the thin-walled cylindrical part according to the first force measurement data, and control each vibrator 8 to vibrate at a corresponding vibration frequency to release the stress of the thin-walled cylindrical part.

[0034] It should be noted that in the embodiment of the present invention, the telescopic support rod 4 and the support arc top 6 can be set to adapt to the support of thin-walled cylindrical parts with different inner diameter sizes, which has extremely high flexibility. At the same time, in the embodiment of the present invention, a force sensor 7 is also provided. The force sensor 7 can adjust the telescopic support rod 4 by sensing the pressure received by the telescopic support rod 4 so that the telescopic support rod 4 uniformly supports the thin-walled cylindrical part to avoid stress concentration. At the same time, since the change of stress during the milling process of the thin-walled cylindrical part will act on the telescopic support rod 4, the stress distribution of the thin-walled cylindrical part during the milling process can also be obtained through each force sensor 7, and then cooperate with the vibrator 8 to vibrate at a targeted frequency to eliminate the corresponding stress, so that the thin-walled cylindrical part will not be deformed due to excessive stress concentration.

[0035] It is worth mentioning that the milling of the thin-walled cylindrical part is generally carried out relative to the inside. At this time, the thin wall has not been formed and it will not deform easily, so normal milling can be carried out.

[0036] In this specific embodiment, as Figures 1 - 3 shown, a first threaded area 9 is provided on the telescopic support rod 4. The first threaded area 9 is threadedly connected to a first threaded ring 10. Arc top extension rods 5 are respectively movably connected to both sides of the first threaded ring 10; the first threaded ring 10 drives the arc top extension rods 5 to rise or fall by spirally moving up and down in the first threaded area 9 to change the opening amplitude, thereby adjusting the radian of the support arc top 6. Among them, the first threaded ring 10 is movably connected to the arc top extension rod 5, and the arc top extension rod 5 will not rotate together with the first threaded ring 10.

[0037] It should be noted that in the embodiment of the present invention, the radian of the support arc top 6 can be adjusted through a simple structure. It has the advantages of simplicity and high efficiency.

[0038] In another specific embodiment, a second motor is provided on the telescopic support rod 4. The second motor is respectively connected to the arc top extension rods 5 on both sides, and the second motor is used to drive the opening amplitude of the arc top extension rods 5, thereby adjusting the radian of the support arc top 6.

[0039] It should be noted that if a motor is used to adjust the radian of the support arc top 6, full automation and high-precision adjustment can be effectively achieved.

[0040] In this specific embodiment, the matching of the initial force measurement data of the force sensors 7 on each telescopic support rod 4 includes:

[0041] The initial force measurement data of the force sensors 7 on each telescopic support rod 4 are the same, or the difference between the initial force measurement data does not exceed a first preset error.

[0042] It should be noted that the same initial force measurement data of the force sensors 7 on each telescopic support rod 4 indicates that the internal support force of the thin-walled cylindrical part is uniform, and setting the first preset error avoids the problem of over-adjustment.

[0043] Based on the above-provided milling device, an embodiment of the present invention further provides a milling method, as Figure 4 shown, and the method includes:

[0044] Step S1: Obtain the first inner diameter of the thin-walled cylindrical part with internal processing completed, and obtain the first telescopic length of the telescopic support rod and the first radian of the support arc top according to the first inner diameter.

[0045] It should be noted that the first telescopic length should be adapted to the first inner diameter, and the first radian should be the same as the inner diameter radian of the thin-walled cylindrical part.

[0046] Step S2: Adjust the telescopic support rod and the support arc top respectively according to the first telescopic length and the first radian; sleeved the thin-walled cylindrical part on the telescopic support rod, and control the first motor to perform the first adjustment so that the initial force measurement data of the force sensors corresponding to each telescopic support rod are matched.

[0047] In this specific embodiment, in step S2, adjusting the telescopic support rod and the support arc top respectively according to the first telescopic length and the first radian includes:

[0048] Adjust the telescopic support rod to the first telescopic length;

[0049] Control the arc top extension rod corresponding to the support arc top to move up and down to drive the opening amplitude of the arc top extension rod, and then adjust the radian of the support arc top to the first radian.

[0050] In this specific embodiment, in step S2, sleeving the thin-walled cylindrical part on the telescopic support rod and controlling the first motor to perform the first adjustment so that the initial force measurement data of the force sensors corresponding to each telescopic support rod are matched includes:

[0051] Sleeve the thin-walled cylindrical part on the telescopic support rod so that the connecting rod is located at the central position inside the thin-walled cylindrical part;

[0052] Control each first motor to perform a first adjustment so that each telescopic support rod undergoes micro-telescoping, thereby making the initial force measurement data of each force measurement sensor the same.

[0053] It should be noted that this can ensure that the internal part of the thin-walled cylindrical part is uniformly supported, avoiding concentrated support forces, and preventing deviation in milling accuracy caused by different support forces during the milling process of the thin-walled cylindrical part, thereby reducing the finished product quality.

[0054] Step S3: Control the milling machine main body to perform rough machining milling on the outer wall of the thin-walled cylindrical part; in response to the completion of the rough machining milling, obtain the second force measurement data of each force measurement sensor, obtain the second stress distribution of the thin-walled cylindrical part based on the second force measurement data; obtain the corresponding second vibration frequency of each vibrator based on the second stress distribution, and control each vibrator to perform vibration treatment on the thin-walled cylindrical part at its corresponding second vibration frequency to release the stress generated during the rough machining milling of the thin-walled cylindrical part.

[0055] Step S4: Control the milling machine main body to perform finish machining milling on the outer wall of the thin-walled cylindrical part; in response to the completion of the finish machining milling, obtain the third force measurement data of each force measurement sensor, obtain the third stress distribution of the thin-walled cylindrical part based on the third force measurement data; obtain the corresponding third vibration frequency of each vibrator based on the third stress distribution, and control each vibrator to perform vibration treatment on the thin-walled cylindrical part at its corresponding third vibration frequency to release the stress generated during the finish machining milling of the thin-walled cylindrical part, and obtain the finished product of the thin-walled cylindrical part.

[0056] In this specific embodiment, when performing vibration treatment on the thin-walled cylindrical part in step S3 and step S4, the method further includes:

[0057] Heat the thin-walled cylindrical part, with the heating temperature being 140 ± 10 °C, then keep it warm for 30 - 45 minutes, and air-cool it to room temperature.

[0058] It should be noted that through heat treatment in cooperation with vibration treatment, stress can be released more quickly, reducing the processing time of the thin-walled cylindrical part and increasing the processing efficiency of the thin-walled cylindrical part.

[0059] The embodiment of the present invention can adapt to the support of thin-walled cylindrical parts with different inner diameter sizes through the telescopic structure of the telescopic support rod and the radian adjustment structure of the support arc top, solving the problem of poor flexibility of the need to mill special support parts in the prior art, greatly improving the flexibility of the thin-walled support structure, and reducing resource waste. In addition, compared with single-point support, the support arc top in the embodiment of the present invention has a larger support range, avoiding the problem of concentrated support forces.

[0060] In the embodiment of the present invention, by setting a force measuring sensor, when the thin-walled cylindrical part is loaded on the thin-walled support structure, the initial force measuring data of the force measuring sensors on each telescopic support rod are made to match by adjusting the first motor. This can make the magnitudes of the support forces in the thin-walled cylindrical part consistent, so that the thin-walled cylindrical part is uniformly supported by the support forces, and avoid the situation of stress concentration caused by uneven support.

[0061] The embodiment of the present invention also sets a vibrator. By the combined use of the vibrator and the force measuring sensor, when the face milling machining is completed, according to the first force measuring data, the first stress distribution of the thin-walled cylindrical part can be obtained. According to the first stress distribution, each vibrator is controlled to vibrate at a corresponding vibration frequency to release the stress of the thin-walled cylindrical part. Vibrating at a corresponding frequency according to the stress distribution situation can ensure the complete release of the stress, and thus avoid the deformation problem caused by stress concentration.

[0062] In summary, the embodiment of the present invention provides a milling device that can adapt to the support of thin-walled cylindrical parts of different sizes, and can release stress in time during the milling process, thereby avoiding the milling deformation problem of thin-walled cylindrical parts.

[0063] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0064] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referred to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the partial description of the method embodiment.

[0065] The above is only a preferred embodiment of the present invention, and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A milling device applied to the milling of thin-walled cylindrical parts, characterized in that, The milling device includes: a milling machine main body and a thin-wall support structure. The thin-wall support structure includes a clamping disk, which is used to be clamped on the milling machine main body to fix the thin-wall support structure. A connecting rod is arranged on the clamping disk, and a plurality of first motors arranged in a ring are arranged on the connecting rod. The first motors are connected to telescopic support rods. The first motors are used to control the telescopic support rods to expand and contract to support the cylindrical thin-wall parts with different inner diameter sizes. Arc top extension rods are respectively movably connected to both sides of the telescopic support rod. A support arc top is jointly connected to the tops of the telescopic support rod and the arc top extension rod. The arc top extension rod is used to adjust the arc top of the support arc top to adapt to the inner diameter of the cylindrical thin-wall part. A force sensor for sensing the pressure received by the telescopic support rod and a vibrator are also arranged on the telescopic support rod; The milling device is configured to: in response to obtaining the inner diameter of the cylindrical thin-wall part, adjust the support rod and the arc top of the thin-wall support structure so that the length of the support rod and the radian of the arc top sequentially match the inner diameter of the cylindrical thin-wall part, and make the initial force measurement data of the force sensors on each telescopic support rod match; in response to the completion of the stage milling of the cylindrical thin-wall part, obtain the first force measurement data of the force sensor, obtain the first stress distribution of the cylindrical thin-wall part according to the first force measurement data, and control each vibrator to vibrate at a corresponding vibration frequency according to the first stress distribution to release the stress of the cylindrical thin-wall part.

2. The milling device according to claim 1, characterized in that, A first threaded area is arranged on the telescopic support rod, and a first threaded ring is threadedly connected to the first threaded area. The arc top extension rods are respectively movably connected to both sides of the first threaded ring; the first threaded ring drives the arc top extension rod to rise or fall by spirally moving up and down in the first threaded area to change the opening amplitude, thereby adjusting the radian of the support arc top; wherein, the first threaded ring is movably connected to the arc top extension rod, and the arc top extension rod will not rotate together with the first threaded ring.

3. The milling device according to claim 1, characterized in that, A second motor is arranged on the telescopic support rod, and the arc top extension rods are respectively connected to both sides of the second motor. The second motor is used to drive the opening amplitude of the arc top extension rod, thereby adjusting the radian of the support arc top.

4. The milling device according to claim 1, characterized in that, The matching of the initial force measurement data of the force sensors on each telescopic support rod includes: The initial force measurement data of the force sensors on each telescopic support rod are the same, or the difference between the initial force measurement data does not exceed a first preset error.

5. A milling method, characterized in that, The milling device applied to any one of claims 1 to 4 includes: Step S1, obtain the first inner diameter of the cylindrical thin-wall part with internal machining completed, and obtain the first telescopic length of the telescopic support rod and the first radian of the support arc top according to the first inner diameter; Step S2: Adjust the telescopic support rod and the support arc top respectively according to the first telescopic length and the first radian; sleeved the cylindrical thin-walled part on the telescopic support rod, control the first motor to perform the first adjustment so that the initial force measurement data of the force sensors corresponding to each telescopic support rod are matched; Step S3: Control the milling machine main body to perform rough machining milling on the outer wall of the cylindrical thin-walled part; in response to the completion of the rough machining milling, obtain the second force measurement data of each force sensor, obtain the second stress distribution of the cylindrical thin-walled part according to the second force measurement data; obtain the second vibration frequency corresponding to each vibrator according to the second stress distribution, control each vibrator to perform vibration treatment on the cylindrical thin-walled part at its corresponding second vibration frequency, and release the stress generated by the cylindrical thin-walled part during the rough machining milling; Step S4: Control the milling machine main body to perform finish machining milling on the outer wall of the cylindrical thin-walled part; in response to the completion of the finish machining milling, obtain the third force measurement data of each force sensor, obtain the third stress distribution of the cylindrical thin-walled part according to the third force measurement data; obtain the third vibration frequency corresponding to each vibrator according to the third stress distribution, control each vibrator to perform vibration treatment on the cylindrical thin-walled part at its corresponding third vibration frequency, and release the stress generated by the cylindrical thin-walled part during the finish machining milling to obtain the finished product of the cylindrical thin-walled part.

6. The milling method according to claim 5, characterized in that When performing vibration treatment on the cylindrical thin-walled part in the step S3 and the step S4, the method further includes: Heat the cylindrical thin-walled part, the heating temperature is 140 ± 10 °C, then keep it warm for 30 - 45 min, and air-cool it to room temperature.

7. The milling method according to claim 5, characterized in that, In the step S2, adjusting the telescopic support rod and the support arc top respectively according to the first telescopic length and the first radian includes: Adjust the telescopic support rod to the first telescopic length; Control the up and down movement of the arc top extension rod corresponding to the support arc top to drive the opening amplitude of the arc top extension rod, and then adjust the radian of the support arc top to the first radian.

8. The milling method according to claim 5, characterized in that In the step S2, sleeving the cylindrical thin-walled part on the telescopic support rod, controlling the first motor to perform the first adjustment so that the initial force measurement data of the force sensors corresponding to each telescopic support rod are matched, includes: Sleeve the cylindrical thin-walled part on the telescopic support rod so that the connecting rod is located at the center position inside the cylindrical thin-walled part; Control each first motor to perform the first adjustment so that each telescopic support rod performs micro-telescoping, and then make the initial force measurement data of each force sensor the same.

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