Low-noise axial flow fan machining method and system

Abstract

According to the low-noise axial flow fan machining method and system, a to-be-machined material can generate heat in the cutting and milling receiving process, so that rigidity data of the to-be-machined material is determined, and deformation of the to-be-machined material caused by high temperature can be avoided. Specifically, by selecting different milling cutters, the temperature rising rate of the milling cutter and the to-be-machined material in the milling process can be reduced, and then the influence of high temperature on deformation of the cutting material is reduced. In the curved surface machining process, a surface milling step, a vertical milling step and a curve milling step can exist. In the face milling step, the rotating speed of a milling cutter and the feeding speed of the milling cutter are controlled, and the influence of vibration stress can be reduced. In the vertical milling step, the influence of vibration stress can be reduced by controlling the axial cutting depth of the milling cutter fed each time. In the curve milling step, the influence of vibration stress can be reduced by controlling the axial cutting depth and the radial cutting depth of the milling cutter in each time.

Description

Technical Field

[0001] The present application relates to the technical field of low-noise axial flow fan processing methods and systems, and in particular to a low-noise axial flow fan processing method and system. Background Art

[0002] Axial flow fans are frequently used in air disturbance occasions such as tunnel ventilation. Axial flow fans have strong air disturbance capabilities, which is due to their large size and high rotation speed of the rotating shaft. As the size of the axial flow fan increases, the processing accuracy requirements of the axial flow fan will also increase. At high rotation speeds, the lower the processing accuracy of the axial flow fan, the greater the noise of the axial flow fan when it is in operation. During the processing of low-noise axial flow fans, since more curved surfaces need to be processed, the contact surface between the processing tool head and the material to be cut will vibrate. On the one hand, these vibrations will generate high temperatures, which will cause the material to be cut to deform. On the other hand, they will generate vibration stress that will cause the material to be cut to deform. To this end, it is necessary to propose a low-noise axial flow fan processing method and system to address the defect of low processing accuracy of traditional axial flow fan processing methods. Summary of the invention

[0003] Based on this, it is necessary to propose a low-noise axial flow fan processing method and system to address the defect of low processing precision of traditional axial flow fan processing methods.

[0004] The present application provides a low-noise axial flow fan processing method, comprising:

[0005] Call the stiffness data of the material to be processed;

[0006] Matching the milling cutter so that the stiffness of the milling cutter and the stiffness of the material to be processed meet a matching threshold;

[0007] Analyze the machining process and determine at least one milling step;

[0008] Select a milling step;

[0009] Determine whether the milling step is a face milling step;

[0010] If the milling step is a face milling step, adjust the rotation speed and feed speed of the milling cutter;

[0011] If the milling step is not a face milling step, determining whether the milling step is an end milling step;

[0012] If the milling step is an end milling step, the axial cutting depth of the milling cutter is adjusted each time the milling cutter is fed;

[0013] If the milling step is not a vertical milling step, determining whether the milling step is a curve milling step;

[0014] If the milling step is a curve milling step, the axial cutting depth and radial cutting depth of each feed of the milling cutter are adjusted;

[0015] Return to the step of selecting a milling step until all milling steps are completed;

[0016] Based on the output vibration of each milling step, the vibration damper is adjusted to achieve a low-noise axial fan machining process.

[0017] The present application provides a low-noise axial flow fan processing system, comprising:

[0018] A host computer, used to execute the low-noise axial flow fan processing method;

[0019] A machining center, which is communicatively connected with the host computer;

[0020] A vibration sensor, communicatively connected to the host computer;

[0021] A vibration damper is arranged on the bottom surface of the machining center, and the vibration damper is communicatively connected with the host computer.

[0022] The present application relates to a low-noise axial flow fan processing method and system. By calling the stiffness data of the material to be processed, the deformation threshold at the recrystallization temperature of the material to be processed itself is determined. Since the material to be processed will generate heat during the process of receiving cutting and milling, the stiffness data of the material to be processed is determined, which can avoid the deformation of the cutting material caused by high temperature. Specifically, by selecting different milling cutters, the temperature rise rate between the milling cutter and the material to be processed during the milling process can be reduced, thereby reducing the impact of high temperature on the deformation of the cutting material. In the process of curved surface processing, there may be face milling steps, vertical milling steps and curve milling steps. Controlling the rotation speed of the milling cutter and the feed speed of the milling cutter in the face milling step can reduce the impact of vibration stress. Controlling the axial cutting depth of each feed of the milling cutter in the vertical milling step can reduce the impact of vibration stress. Controlling the axial cutting depth and radial cutting depth of each feed of the milling cutter in the curve milling step can reduce the impact of vibration stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A method flow chart of a low-noise axial flow fan processing method provided in one embodiment of the present application.

[0024] Figure 2 A structural connection diagram of a low-noise axial flow fan processing system provided in one embodiment of the present application.

[0025] Reference numerals:

[0026] 100-host computer; 200-machining center; 300-vibration sensor; 400-vibration damper. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] The present application provides a method for processing a low-noise axial flow fan.

[0029] like Figure 1 As shown, in one embodiment of the present application, a low-noise axial flow fan processing method includes:

[0030] S100, calling the stiffness data of the material to be processed.

[0031] Specifically, as the temperature rises, the molecular or atomic activity of the material increases, causing the volume of the material to expand. At low temperatures, the molecular or atomic activity decreases, and the material shrinks. This phenomenon of thermal expansion or contraction is common in metal materials.

[0032] The expansion or contraction of metal materials at different temperatures will affect the deformation threshold of the metal materials.

[0033] It is understandable that for most metal materials, the strength and hardness of the metal usually decreases at high temperatures, which makes the material more easily deformed when subjected to stress.

[0034] Therefore, the stiffness data call of the material to be processed based on the temperature parameters can be used to prevent the high temperature from causing deformation of the material to be cut.

[0035] On the other hand, the strength and hardness of metals decrease at high temperatures. By selecting a milling cutter with appropriate stiffness and applying an appropriate speed to the milling cutter, vibration stress can be reduced and deformation of the material to be processed can be reduced.

[0036] Simple application of stiffness data of the material to be processed based on temperature parameters can be used to prevent high-temperature deformation of the material to be processed, and can also be used to reduce the strength and hardness of the material to be processed, thereby reducing vibration stress.

[0037] S200, matching the milling cutter so that the rigidity of the milling cutter and the rigidity of the material to be processed meet a matching threshold.

[0038] Specifically, the stiffness of a milling cutter refers to the ability of a milling cutter to resist deformation when subjected to external forces. A milling cutter with high stiffness will deform less, while a milling cutter with low stiffness will bend or deform more easily.

[0039] In fact, when the material to be processed performs better in a high temperature environment, that is, the deformation of the material to be processed is small, while the strength and hardness are greatly reduced in a high temperature environment, this case is suitable for matching a high-rigidity milling cutter, and at the same time can adapt to a higher rotation speed of the milling cutter.

[0040] When the material to be processed does not perform well in a high temperature environment, that is, the deformation of the material to be processed is large, while the strength and hardness reduction is small in a high temperature environment, it is suitable to match a low-rigidity milling cutter in this case, and the milling cutter can be adapted to a lower rotation speed. The deformation of the low-rigidity milling cutter couples the deformation stress of the material to be processed. On the other hand, the lower rotation speed of the milling cutter can achieve lower heat generation, thereby reducing the deformation of the material to be processed. This can improve the processing accuracy of the material to be processed.

[0041] S300, analyzing the machining process and determining at least one milling step.

[0042] Specifically, the milling steps include face milling, end milling, curve milling and other milling processing methods.

[0043] S400, select a milling step.

[0044] S500, determining whether the milling step is a face milling step.

[0045] S610: If the milling step is a face milling step, adjust the rotation speed and feed speed of the milling cutter.

[0046] S620: If the milling step is not a face milling step, determine whether the milling step is a vertical milling step.

[0047] S630: If the milling step is an end milling step, the axial cutting depth of the milling cutter is adjusted each time the milling cutter is fed.

[0048] S640: If the milling step is not a vertical milling step, determine whether the milling step is a curve milling step.

[0049] S650: If the milling step is a curve milling step, the axial cutting depth and radial cutting depth of each feed of the milling cutter are adjusted.

[0050] S700, returning to the process of selecting a milling step until all milling steps are completed.

[0051] The S800 adjusts the vibration damper based on the output vibration of each milling step to achieve a low-noise axial fan machining program.

[0052] Specifically, the damper of the machining center absorbs vibration energy through the damping effect, thereby improving the machining quality of CNC machine tools or mechanical devices and extending the tool life. Simply put, the damper can effectively suppress vibration and improve machining accuracy and product quality.

[0053] The present embodiment relates to a low-noise axial flow fan processing method, which determines the deformation threshold at the recrystallization temperature of the material to be processed by calling the stiffness data of the material to be processed. Since the material to be processed will generate heat during the process of receiving cutting and milling, the stiffness data of the material to be processed is determined, which can avoid the deformation of the cutting material caused by high temperature. Specifically, by selecting different milling cutters, the temperature rise rate between the milling cutter and the material to be processed during the milling process can be reduced, thereby reducing the impact of high temperature on the deformation of the cutting material. In the process of curved surface processing, there may be face milling steps, vertical milling steps and curve milling steps. Controlling the rotation speed of the milling cutter and the feed speed of the milling cutter in the face milling step can reduce the impact of vibration stress. Controlling the axial cutting depth of each feed of the milling cutter in the vertical milling step can reduce the impact of vibration stress. Controlling the axial cutting depth and radial cutting depth of each feed of the milling cutter in the curve milling step can reduce the impact of vibration stress.

[0054] In one embodiment of the present application, before S100, the following steps are included:

[0055] S111, receiving the recrystallization temperature of the material to be processed.

[0056] Specifically, for most metal materials, the change in the strength limit of the metal materials with temperature can be roughly divided into three stages.

[0057] The first stage is the primary stage. The temperature is low in the initial stage, and the ultimate strength of the metal material decreases significantly with the increase of temperature.

[0058] The second stage is the intermediate stage, and the ultimate strength of the metal material slowly decreases as the temperature increases.

[0059] The third stage is the high temperature stage, and the ultimate strength of metal materials decreases sharply as the temperature increases.

[0060] These three stages correspond to the process from transgranular fracture to intergranular fracture of metal materials.

[0061] When the material to be processed performs better in a high temperature environment, the high temperature stage of the material to be processed can be selected as the processing temperature threshold.

[0062] When the material to be processed performs poorly in a high temperature environment, the middle stage of the material to be processed may be selected as the processing temperature threshold.

[0063] The processing temperature threshold is the recrystallization temperature of the material to be processed defined in S112.

[0064] S112, determining a deformation threshold of the material to be processed based on the recrystallization temperature of the material to be processed.

[0065] Specifically, at the recrystallization temperature of the material to be processed, the metal material will still experience creep.

[0066] The first stage creep of metallic materials is inevitable.

[0067] The second stage creep of metal materials is relatively mild.

[0068] When the material to be processed performs well in a high temperature environment, the rotation speed of the milling cutter can be selected according to the first stage creep time period of the metal material to complete the milling step under a small deformation amount.

[0069] When the material to be processed performs poorly in a high temperature environment, the rotation speed of the milling cutter can be selected during the first stage creep of the metal material and the second stage creep of the metal material to complete the milling step under a small deformation amount.

[0070] S113, determining the stiffness of the material to be processed by using the deformation threshold of the material to be processed.

[0071] Specifically, based on the relationship between the temperature and creep rate of the metal material, the deformation threshold of the material to be processed can be determined, and then the stiffness of the material to be processed can be determined.

[0072] This embodiment involves determining the stiffness of the material to be processed. During the creep process of the metal material, the first stage creep of the metal material and the second stage creep of the metal material will produce subgrains. Controlling the temperature of the material after processing, that is, heat treatment of the material to be processed can effectively reduce the subgrain spin.

[0073] In one embodiment of the present application, S100 includes:

[0074] S121, based on the stiffness of the material to be processed, select a rotation speed range for rotation.

[0075] Specifically, based on the creep time of the material to be processed, the rotation speed range of the milling cutter can be determined.

[0076] S122, selecting a speed within the speed range.

[0077] S123, determining the temperature of the milling cutter in a static displacement working state with the material to be processed at the rotation speed.

[0078] Specifically, the friction phenomenon caused by the rotational motion between the material of the milling cutter and the material to be processed will cause the temperature of the friction interface to rise, that is, friction heating.

[0079] Therefore, it is necessary to determine the temperature under the static displacement working state to achieve the adaptation of the temperature under the static displacement working state to the creep temperature of the material to be processed.

[0080] S124, determining a deformation value of the material to be processed based on the temperature in the static displacement working state.

[0081] Specifically, when the temperature in the static displacement working state is matched with the creep temperature of the material to be processed, the deformation value of the material to be processed can be determined quickly and effectively.

[0082] S125, returning to a speed in the selected speed range until all speeds are selected.

[0083] Specifically, all the rotation speeds in this embodiment are actually based on the creep time of the material to be processed, and the rotation speed range of the milling cutter can be determined.

[0084] For example, if the creep time of the material to be processed is 5 minutes, you can choose a time range of 3 minutes to 5 minutes, with an interval of 10 seconds as one creep time of the material to be processed, such as 3 minutes, 3 minutes and 10 seconds, 3 minutes and 20 seconds, 3 minutes and 30 seconds, etc.

[0085] If the creep time of the material to be processed is selected to be 3 minutes, the number of milling cutter revolutions required to complete the milling step is 10,000 revolutions, and the rotation speed of the milling cutter is one-third of 10,000 revolutions per minute.

[0086] If the creep time of the material to be processed is selected to be 5 minutes, the number of milling cutter revolutions required to complete the milling step is 10,000 revolutions, and the rotation speed of the milling cutter is 2,000 revolutions per minute.

[0087] All the rotational speeds described are discrete values ​​ranging from 2,000 rpm to 1 / 30,000 rpm.

[0088] S126, returning to the process of selecting a milling cutter with respect to a rotation speed range, until all the milling cutters are selected.

[0089] In one embodiment of the present application, S200 includes:

[0090] S211, select a temperature.

[0091] Specifically, the temperature is the temperature of the milling cutter in a static displacement working state with the material to be processed at the rotation speed.

[0092] S212, determining whether the temperature is less than or equal to the recrystallization temperature of the material to be processed.

[0093] S213, if the temperature is greater than the recrystallization temperature of the material to be processed, return to the selection of a temperature until all temperatures are selected.

[0094] S214, if the temperature is less than or equal to the recrystallization temperature of the material to be processed, the milling cutter corresponding to the temperature is added to the folder of milling cutters to be selected, and the process of selecting a temperature is returned until all temperatures are selected.

[0095] Specifically, the friction phenomenon caused by the rotational motion between the material of the milling cutter and the material to be processed will cause the temperature of the friction interface to rise, that is, friction heating.

[0096] Therefore, it is necessary to determine the temperature under the static displacement working state to achieve the adaptation of the temperature under the static displacement working state to the creep temperature of the material to be processed.

[0097] The higher the temperature, the more obvious the creep phenomenon of the material to be processed. Simply put, the higher the temperature, the more obvious the deformation of the material to be processed. Therefore, if the temperature is less than or equal to the recrystallization temperature of the material to be processed, the deformation of the material caused by temperature can be greatly reduced.

[0098] More specifically, the selected temperature in this embodiment is actually the temperature of the material to be processed and the milling cutter in a static displacement working state at a selected rotation speed.

[0099] In one embodiment of the present application, S200 further includes:

[0100] S221, select a milling cutter in the milling cutter folder to be selected.

[0101] S222, determining the rotation speed of the milling cutter.

[0102] S223, determining a deformation value of the material to be processed based on the selected milling cutter and the rotation speed of the milling cutter.

[0103] S224, returning to the step of selecting a milling cutter in the to-be-selected milling cutter folder until all the milling cutters in the to-be-selected milling cutter folder are selected.

[0104] S225, selecting a milling cutter and a rotation speed of the milling cutter with the lowest deformation value of the material to be processed.

[0105] Specifically, through S211 to S214, the three-dimensional relationship among the type of milling cutter, the rotation speed of the milling cutter, and the deformation value of the material to be processed can be determined.

[0106] Based on the three-dimensional relationship, the actual working configuration of the milling cutter and the rotation speed of the milling cutter can be selected when the deformation value of the material to be processed is the lowest.

[0107] Based on the selected milling cutter and the milling cutter speed, the machining accuracy of low-noise axial flow fans can be greatly improved.

[0108] In one embodiment of the present application, S610 includes:

[0109] S611, determining the initial contact point between the milling cutter and the material to be processed in the face milling step.

[0110] S612, adjusting the cutting angle of the milling cutter at the initial contact point with respect to the plane of the material to be processed.

[0111] S613, select a milling cutter speed.

[0112] S614, select a feed speed for a milling cutter.

[0113] S615, receiving a first vibration parameter of the vibration sensor.

[0114] S616, returning to the process of selecting a rotation speed of a milling cutter until all rotation speeds are selected.

[0115] S617, returning to the process of selecting a feed speed of a milling cutter until the feed speeds of all milling cutters are selected.

[0116] S618, selecting the rotation speed and feed speed of the milling cutter under the optimal first vibration parameters.

[0117] Specifically, the face milling cutter is mainly used for milling of large planes and multi-axis processing of flatter three-dimensional contours. It has the characteristics of high milling speed, high processing efficiency and good processing surface quality.

[0118] In the face milling process, the feed speed of the milling cutter is a key factor affecting the machining accuracy. In fact, the feed speed of the milling cutter affects the vibration stress between the milling cutter and the material to be processed.

[0119] Under the working conditions of the same milling cutter, the same milling cutter speed and the same material to be processed, the faster the feed speed of the milling cutter, the greater the vibration stress.

[0120] Similarly, under the same milling cutter feed speed, the same milling cutter rotation speed and the same working conditions of the material to be processed, the greater the hardness of the milling cutter, the greater the vibration stress.

[0121] Under the same milling cutter feed speed, the same milling cutter and the same working conditions of the material to be processed, the greater the milling cutter speed, the greater the vibration stress.

[0122] Through comprehensive analysis of the milling cutter hardness, milling cutter speed, and milling cutter feed speed, it is possible to ensure machining accuracy while maintaining a high machining speed.

[0123] In one embodiment of the present application, S630 includes:

[0124] S631, select a unit axial cutting depth.

[0125] Specifically, the unit axial cutting depth is the axial cutting depth of each feeding of the milling cutter.

[0126] S632, calling the rotation speed and feed speed of the milling cutter under the optimal vibration parameters.

[0127] S633, execute the vertical milling step.

[0128] S634, receiving a second vibration parameter of the vibration sensor.

[0129] S635, returning to the process of selecting a unit axial cutting depth until all unit axial cutting depths are selected.

[0130] S636, selecting the unit axial cutting depth under the optimal second vibration parameter, and determining the axial cutting depth of each feeding of the milling cutter.

[0131] Specifically, an end mill is the most frequently used milling cutter on a machining center, and its structure includes cutting edges on a cylindrical surface and an end face, which can perform cutting simultaneously or individually.

[0132] More specifically, based on S611 to S618 , a more appropriate milling cutter hardness, a more appropriate milling cutter rotation speed, and a more appropriate milling cutter feed speed can be determined.

[0133] By using the second vibration parameter of the vibration sensor, the unit axial cutting depth suitable for machining efficiency can be determined.

[0134] In one embodiment of the present application, S650 includes:

[0135] S651, select a unit radial cutting depth.

[0136] Specifically, the unit radial cutting depth is the radial cutting depth of each feed of the milling cutter.

[0137] S652, calling the milling cutter rotation speed, milling cutter feed speed, and unit axial cutting depth under the optimal vibration parameters.

[0138] S653, execute the curve milling step.

[0139] S654, receiving a third vibration parameter from the vibration sensor.

[0140] S655, returning to the process of selecting a unit radial cutting depth until all unit radial cutting depths are selected.

[0141] S656, selecting the unit axial cutting depth under the optimal third vibration parameter, and determining the radial cutting depth of each feed of the milling cutter.

[0142] Specifically, the curve milling cutter is suitable for processing workpieces with curved shapes, and can be used for milling arc-shaped, elliptical and other workpieces.

[0143] Curve milling is actually a milling step in three-dimensional space coordinates. By decomposing the motion trajectory of this step, it can be simplified into a process in which vertical milling and face milling are performed simultaneously.

[0144] In one embodiment of the present application, S800 includes:

[0145] S810, receiving vibration parameters from a vibration sensor.

[0146] Specifically, the vibration parameter includes one or more of a first vibration parameter, a second vibration parameter and a third vibration parameter.

[0147] S820, analyzing the vector direction of the vibration force in the vibration parameters and the vibration force value corresponding to the vector direction.

[0148] S830: Output a damping parameter for adjusting vibration based on the vector direction of the vibration force and the vibration force value corresponding to the vector direction.

[0149] Specifically, based on the vibration parameters of the vibration sensor, the vibration is decomposed into three orthogonal vector vibrations in three-dimensional space coordinates. Using the data reading of the three orthogonal vector vibrations, the damper receives the damping parameters of the upper computer for adjusting the vibration, and the damper adjusts the vibration.

[0150] The present application provides a low-noise axial flow fan processing system.

[0151] like Figure 2 As shown, in one embodiment of the present application, a low-noise axial flow fan processing system includes a host computer 100, a processing center 200, a vibration sensor 300 and a vibration damper 400.

[0152] The host computer 100 is used to execute the low-noise axial flow fan processing method.

[0153] The machining center 200 is communicatively connected to the host computer 100 .

[0154] The vibration sensor 300 is connected to the host computer 100 for communication.

[0155] The vibration damper 400 is disposed on the bottom surface of the machining center 200 , and the vibration damper 400 is communicatively connected with the host computer 100 .

[0156] The present embodiment relates to a low-noise axial flow fan processing system. The host computer 100 determines the deformation threshold at the recrystallization temperature of the material to be processed by calling the stiffness data of the material to be processed. Since the material to be processed will generate heat during the process of receiving cutting and milling, the stiffness data of the material to be processed is determined to avoid the deformation of the cutting material caused by high temperature. Specifically, the machining center 200 implements the milling tool call based on the instructions of the host computer 100. By selecting different milling cutters, the host computer 100 can reduce the temperature rise rate between the milling cutter and the material to be processed during the milling process, thereby reducing the influence of high temperature on the deformation of the cutting material. In the process of curved surface processing, there may be face milling steps, vertical milling steps and curve milling steps. The control of the rotation speed of the milling cutter and the feed speed of the milling cutter in the face milling step can reduce the influence of vibration stress. The control of the axial cutting depth of the milling cutter each time in the vertical milling step can reduce the influence of vibration stress. The vibration sensor 300 can detect vibration stress, and the control of the axial cutting depth and radial cutting depth of the milling cutter each time in the curve milling step can reduce the influence of vibration stress. The vibration damper 400 may reduce the effects of vibration stress.

[0157] The technical features of the above-described embodiments may be arbitrarily combined, and the execution order of the method steps is not limited. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0158] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A low-noise axial flow fan processing method, characterized in that: include: Call the stiffness data of the material to be processed; Matching the milling cutter so that the stiffness of the milling cutter and the stiffness of the material to be processed meet a matching threshold; Analyze the machining process and determine at least one milling step; Select a milling step; Determine whether the milling step is a face milling step; If the milling step is a face milling step, adjust the rotation speed and feed speed of the milling cutter; If the milling step is not a face milling step, determining whether the milling step is an end milling step; If the milling step is an end milling step, the axial cutting depth of the milling cutter is adjusted each time the milling cutter is fed; If the milling step is not a vertical milling step, determining whether the milling step is a curve milling step; If the milling step is a curve milling step, the axial cutting depth and radial cutting depth of each feed of the milling cutter are adjusted; Return to the step of selecting a milling step until all milling steps are completed; Based on the output vibration of each milling step, the vibration damper is adjusted to achieve a low-noise axial fan machining process.

2. The low-noise axial flow fan processing method according to claim 1, characterized in that: Before calling the stiffness data of the material to be processed, the method includes: receiving a recrystallization temperature of the material to be processed; Determining a deformation threshold of the material to be processed based on a recrystallization temperature of the material to be processed; The stiffness of the material to be processed is determined by using the deformation threshold of the material to be processed.

3. The low-noise axial flow fan processing method according to claim 2, characterized in that: The calling of the stiffness data of the material to be processed includes: Based on the stiffness of the material to be processed, select a speed range for rotation; Select a speed within the speed range; Determine the temperature of the milling cutter at the rotational speed in a static displacement working state with the material to be processed; Determine the deformation value of the material to be processed based on the temperature under the static displacement working state; Returning to a speed in the selected speed range until all speeds are selected; Return to the selection of a milling cutter with respect to the rotational speed range until all milling cutters are selected.

4. The low-noise axial flow fan processing method according to claim 3, characterized in that: The matching milling cutter comprises: Select a temperature; the temperature is the temperature of the milling cutter under the static displacement working state with the material to be processed at the rotation speed; Determine whether the temperature is less than or equal to the recrystallization temperature of the material to be processed; If the temperature is greater than the recrystallization temperature of the material to be processed, return to the selection of a temperature until all temperatures are selected; If the temperature is less than or equal to the recrystallization temperature of the material to be processed, the milling cutter corresponding to the temperature is added to the folder of milling cutters to be selected, and the process returns to the step of selecting a temperature until all temperatures are selected.

5. The low-noise axial flow fan processing method according to claim 4, characterized in that: The matching milling cutter further comprises: Select a milling cutter in the folder of the milling cutter to be selected; Determine the rotation speed of the milling cutter; Determine the deformation value of the material to be processed based on the selected milling cutter and the speed of the milling cutter; Return to the step of selecting a milling cutter in the to-be-selected milling cutter folder until all the milling cutters in the to-be-selected milling cutter folder are selected; Select the milling cutter and milling cutter speed that have the lowest deformation value for the material to be processed.

6. The low-noise axial flow fan processing method according to claim 5, characterized in that: If the milling step is a face milling step, adjusting the rotation speed and feed speed of the milling cutter includes: Determine the initial contact point between the milling cutter and the material to be processed in the face milling step; Adjust the cutting angle of the milling cutter at the initial contact point with respect to the plane of the material to be processed; Select a milling cutter speed; Select a feed rate for the milling cutter; receiving a first vibration parameter of a vibration sensor; Return to the step of selecting a milling cutter speed until all speeds are selected; Return to the step of selecting a feed speed of a milling cutter until the feed speeds of all milling cutters are selected; The rotation speed and feed speed of the milling cutter under the optimal first vibration parameter are selected.

7. The low-noise axial flow fan processing method according to claim 6, characterized in that: If the milling step is an end milling step, adjusting the axial cutting depth of the milling cutter each time the milling cutter is fed includes: Select a unit axial cutting depth; the unit axial cutting depth is the axial cutting depth of each feed of the milling cutter; Call the milling cutter speed and feed speed under the optimal vibration parameters; Perform end milling steps; receiving a second vibration parameter from the vibration sensor; Return to the step of selecting a unit axial cutting depth until all unit axial cutting depths are selected; The unit axial cutting depth under the optimal second vibration parameter is selected to determine the axial cutting depth of the milling cutter each time the tool is fed.

8. The low-noise axial flow fan processing method according to claim 7, characterized in that: If the milling step is a curve milling step, adjusting the axial cutting depth and radial cutting depth of each feed of the milling cutter includes: Select a unit radial cutting depth; the unit radial cutting depth is the radial cutting depth of each feed of the milling cutter; Call the milling cutter speed, milling cutter feed speed, and unit axial cutting depth under the optimal vibration parameters; Execute the curve milling step; receiving a third vibration parameter from the vibration sensor; Return to the step of selecting a unit radial cutting depth until all unit radial cutting depths are selected; The unit axial cutting depth under the optimal third vibration parameter is selected to determine the radial cutting depth of the milling cutter each time.

9. The low-noise axial flow fan processing method according to claim 8, characterized in that: The vibration damper is adjusted based on the output vibration of each milling step to achieve a low noise axial flow fan processing procedure, including: Receiving vibration parameters of the vibration sensor; the vibration parameters include one or more of a first vibration parameter, a second vibration parameter and a third vibration parameter; Analyze the vector direction of the vibration force in the vibration parameters and the vibration force value corresponding to the vector direction; Based on the vector direction of the vibration force and the vibration force value corresponding to the vector direction, a damping parameter for adjusting the vibration is output.

10. A low-noise axial flow fan processing system, characterized in that: include: A host computer, used to execute a low-noise axial flow fan processing method according to any one of claims 1 to 9; A machining center, which is communicatively connected with the host computer; A vibration sensor, communicatively connected to the host computer; A vibration damper is arranged on the bottom surface of the machining center, and the vibration damper is communicatively connected with the host computer.

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