Rotor accurate grinding machining equipment and method for shaded pole motor

Abstract

The invention discloses fine grinding equipment and method for a rotor of a shaded-pole motor, and belongs to the technical field of shaded-pole motor machining equipment.The fine grinding equipment for the rotor of the shaded-pole motor comprises a fixing frame, a fine grinding block, an adjusting mechanism, a clamping mechanism, a dust collecting box and a driving mechanism. According to the rotor accurate grinding machining equipment of the shaded pole motor, by arranging the dust collection box, chippings generated in the grinding process can be collected in time, and the influence of the chippings on the working environment is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of shaded-pole motor processing equipment, and particularly relates to a rotor precision grinding processing equipment and method for shaded-pole motors. Background Art

[0002] A shaded-pole motor, also known as a shaded-pole type motor, is a type of single-phase AC motor, usually using a cage-type skewed-slot cast-aluminum rotor. According to the different shapes of the stator, it is further divided into a salient-pole shaded-pole motor and a non-salient-pole shaded-pole motor. As a key component of the motor, the surface accuracy and finish of the rotor of the shaded-pole motor have an important impact on the performance and lifespan of the motor.

[0003] During the precision grinding process of the rotor shaft of the shaded-pole motor, due to the lack of a chip collection function in the existing rotor precision grinding processing equipment for shaded-pole motors, the chips generated by grinding will fall and scatter around the workbench, causing an adverse impact on the working environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotor precision grinding processing equipment and method for shaded-pole motors, which is used to solve the technical problem that the existing rotor precision grinding processing equipment for shaded-pole motors lacks a chip collection function, resulting in chips generated by grinding falling and scattering around the workbench, causing an adverse impact on the working environment.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A rotor precision grinding processing equipment for shaded-pole motors, comprising: a fixed frame; a precision grinding block for grinding the rotor shaft; an adjustment mechanism installed on the inner top surface of the fixed frame for adjusting the position of the precision grinding block; a clamping mechanism installed on the fixed frame for clamping the rotor shaft; a dust collection box with an open top for collecting chips generated by grinding; and a driving mechanism for driving the rotor shaft clamped by the clamping mechanism to rotate.

[0007] Preferably, the adjustment mechanism includes: a box body installed on the inner top surface of the fixed frame with an open bottom; a moving block slidably connected to the box body; a lead screw nut penetrating and installed on the moving block; a lead screw rotatably connected to the box body and penetrating the lead screw nut; a first motor installed on one side of the box body, with its power output shaft fixedly connected to one end of the lead screw; a hydraulic cylinder installed on the moving block, with its extending end fixedly connected to the top surface of the precision grinding block; and a first chute opened on one side of the box body.

[0008] Preferably, the clamping mechanism includes: a mounting plate, on the top surface of which a first vertical plate, a second vertical plate and a third vertical plate are fixedly connected; a first rotating block, rotatably connected to the mounting plate; an adjusting screw, passing through the second vertical plate and threadedly connected to the second vertical plate; a movable plate, slidably connected to the mounting plate and rotatably connected to one end of the adjusting screw; a second rotating block, rotatably connected to the movable plate and used to cooperate with the first rotating block to clamp the rotor shaft; and a second chute, formed on the mounting plate.

[0009] Preferably, the driving mechanism includes: a second motor, mounted on the third vertical plate; a shaft rod, one end of which is fixedly connected to the power output shaft of the second motor and the other end of which is fixedly connected to the first rotating block.

[0010] Preferably, the rotor precision grinding processing equipment of the shaded pole motor further includes: a connecting plate, one end of which is fixedly connected to the dust collecting box, the other end of which is fixedly connected to the moving block and slidably connected to the first chute.

[0011] Preferably, the rotor precision grinding processing equipment of the shaded pole motor further includes an air extraction mechanism, and the air extraction mechanism includes: a hollow box, mounted on the bottom surface of the mounting plate and fixedly connected to the fixed frame; a support block, mounted on the bottom surface of the mounting plate and fixedly connected to the fixed frame; a magnet plate, inserted into the hollow box; a connecting hose, one end of which is fixedly connected and communicated with the hollow box and the other end of which is fixedly connected and communicated with the dust collecting box and passes through the second chute; a fixed cylinder, mounted on one side of the hollow box; a support frame, mounted in the fixed cylinder; a rotating shaft, rotatably connected to the support frame; a fan blade, mounted on the rotating shaft; and a transmission belt, sleeved on the rotating shaft and the shaft rod.

[0012] Preferably, the rotor precision grinding processing equipment of the shaded pole motor further includes a control system, and the control system includes: a data acquisition and input module, which is used to acquire the comprehensive data information of the rotor precision grinding processing equipment. Among them, the comprehensive data information includes hardness data, surface roughness data, cumulative grinding duration data of the precision grinding block, rotation speed data and temperature data; a data analysis module, which generates a pressure influence coefficient according to the comprehensive data information and judges and generates a corresponding pressure level according to the pressure influence coefficient; a data acquisition module, which is used to acquire the historical training data set of the rotor precision grinding processing equipment, and the historical training data set includes precision grinding comprehensive influence data and precision grinding duration; among them, the precision grinding comprehensive influence data includes comprehensive data information and the pressure data of the precision grinding block on the rotor shaft; a time prediction module, which trains and predicts a machine learning model of the precision grinding duration based on the historical training data set, acquires real-time precision grinding comprehensive influence data, and inputs it into the trained machine learning model to predict the precision grinding duration.

[0013] Preferably, the pressure influence coefficient is generated as follows:

[0014]

[0015] In the formula, Yl is the pressure influence coefficient, Yd is the hardness data of the rotor shaft (200), Cc is the surface roughness data of the rotor shaft (200), Sc is the cumulative grinding duration data of the fine grinding block (101), Zs is the rotational speed data of the rotor shaft (200), Wd is the temperature data of the rotor shaft (200), and are both weight coefficients.

[0016] Preferably, the pressure level is generated as follows: The pressure level includes a first-level pressure, a second-level pressure, and a third-level pressure, where the first-level pressure, the second-level pressure, and the third-level pressure increase in sequence; The preset threshold range of the pressure influence coefficient is Yl 1 、Yl 2 ,Yl 1 <Yl 2 ;Yl 1 ≤Yl 2 ,at this time, the data analysis module generates a first-level pressure; If Yl 2 ≥Yl>Yl 1 ,at this time, the data analysis module generates a second-level pressure; If Yl>Yl 2 ,at this time, the data analysis module generates a third-level pressure.

[0017] A method for using a rotor fine grinding processing device of a shaded pole motor includes the following steps: Step 1, firmly clamp the rotor shaft through the cooperation of the second rotating block and the first rotating block; Step 2, start the second motor, drive the rotor shaft to rotate through the shaft rod and the first rotating block; Step 3, start the hydraulic cylinder, push the fine grinding block to move downward, and grind the rotor shaft with the fine grinding block to achieve the purpose of fine grinding processing; Step 4, after the part of the rotor shaft in contact with the fine grinding block is ground, start the hydraulic cylinder again, so that the extending end of the hydraulic cylinder drives the fine grinding block to move upward, separating the fine grinding block from the rotor shaft; Step 5, start the first motor, drive the lead screw to rotate, and then make the lead screw nut move horizontally along the lead screw, driving the moving block to slide on the box body, thereby adjusting the horizontal position of the fine grinding block; Step 6, repeat Steps 3 to 5 until the entire surface to be ground of the rotor shaft is completely ground.

[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0019] 1. The rotor fine grinding processing device of the shaded pole motor in the present invention is provided with a dust collection box, so that the debris generated during the grinding process can be collected in time, reducing the impact of the debris on the working environment.

[0020] 2. The rotor precision grinding equipment of the shaded pole motor in the present invention is provided with an air extraction mechanism. The air extraction mechanism can suck debris and air into the hollow box through the negative pressure principle. The magnet plate in the hollow box will adsorb the debris, avoiding environmental pollution caused by the debris.

[0021] 3. The driving mechanism in the present invention is provided with a second motor and a shaft rod. When the second motor operates, it can drive the shaft rod to rotate, and then drive the clamped rotor shaft to rotate, providing the necessary power for the grinding process. While the second motor and the shaft rod drive the rotor shaft to rotate, the shaft rod can also drive the rotating shaft to rotate through a transmission belt, and then drive the fan blade to rotate to generate negative pressure, realizing the automatic collection of debris; by making the second motor perform multiple functions, the number of power sources can be reduced, and the manufacturing cost and usage cost of the equipment can be lowered.

[0022] 4. The rotor precision grinding equipment of the shaded pole motor in the present invention is provided with a control system. The comprehensive data information of the rotor shaft is collected through the data acquisition and input module. The data analysis module generates a pressure influence coefficient based on this information and judges and generates corresponding pressure levels, so as to dynamically adjust the pressure of the precision grinding block on the rotor shaft, thereby optimizing the grinding quality and ensuring that the precision grinding effect of the rotor shaft reaches the expected level; the control system can also avoid over-grinding or under-grinding by precisely controlling the grinding pressure and grinding duration, thereby reducing material waste and lowering the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a three-dimensional view of the rotor precision grinding equipment of the shaded pole motor in the present invention;

[0025] Figure 2 It is a schematic assembly structure diagram of the adjusting mechanism, the clamping mechanism and the air extraction mechanism in the present invention;

[0026] Figure 3 It is a three-dimensional view of the adjusting mechanism in the present invention;

[0027] Figure 4 It is a three-dimensional view of the moving seat in the present invention;

[0028] Figure 5 It is a three-dimensional view of the clamping mechanism in the present invention;

[0029] Figure 6Schematic diagram of the assembly structure of the clamping mechanism and the air extraction mechanism in the present invention;

[0030] Figure 7 Stereogram of the air extraction mechanism in the present invention;

[0031] Figure 8 In the present invention Figure 7 Exploded view;

[0032] Figure 9 Module diagram of the control system in the present invention;

[0033] Reference numerals: 100, fixed frame; 101, fine grinding block; 110, adjusting mechanism; 111, box body; 112, moving block; 113, lead screw nut; 114, lead screw; 115, first motor; 116, hydraulic cylinder; 117, first chute; 120, clamping mechanism; 121, mounting plate; 122, first vertical plate; 123, first rotating block; 124, second vertical plate; 125, adjusting screw; 126, movable plate; 127, second rotating block; 128, second chute; 129, third vertical plate; 130, dust collection box; 131, connecting plate; 140, air extraction mechanism; 141, hollow box; 142, support block; 143, magnet plate; 144, connecting hose; 145, fixed cylinder; 146, support frame; 147, rotating shaft; 148, fan blade; 149, drive belt; 150, drive mechanism; 151, second motor; 152, shaft rod; 200, rotor shaft. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: As Figures 1 - 3 shown, the rotor fine grinding processing equipment of the shaded pole motor includes a fixed frame 100, a fine grinding block 101, an adjusting mechanism 110, a clamping mechanism 120, a dust collection box 130 and a drive mechanism 150.

[0036] The fine grinding block 101 is used to grind the rotor shaft 200, and the rotor shaft 200 is made of carbon steel; the adjusting mechanism 110 is installed on the inner top surface of the fixing frame 100, and the adjusting mechanism 110 is used to adjust the position of the fine grinding block 101; the clamping mechanism 120 is installed on the fixing frame 100, and the clamping mechanism 120 is used to clamp the rotor shaft 200; the top of the dust collection box 130 is open, and the dust collection box 130 is used to collect the debris generated by grinding; the driving mechanism 150 is used to drive the rotor shaft 200 clamped by the clamping mechanism 120 to rotate.

[0037] Specifically, the rotor shaft 200 to be ground is clamped and fixed by using the clamping mechanism 120. Then, the driving mechanism 150 is started to drive the clamped rotor shaft 200 to rotate.

[0038] Then, by starting the adjusting mechanism 110, the position of the fine grinding block 101 is adjusted so that the fine grinding block 101 contacts the rotor shaft 200, and the rotating rotor shaft 200 is ground by the fine grinding block 101. The debris generated by grinding will fall into the dust collection box 130.

[0039] As Figures 2 - 4 shown, the adjusting mechanism 110 includes a box body 111, a moving block 112, a lead screw nut 113, a lead screw 114, a first motor 115, a hydraulic cylinder 116 and a first chute 117.

[0040] The box body 111 is installed on the inner top surface of the fixing frame 100, and the bottom of the box body 111 is open; the moving block 112 is slidably connected to the box body 111; the lead screw nut 113 is installed through the moving block 112; the lead screw 114 is rotatably connected to the box body 111, and the lead screw 114 passes through the lead screw nut 113; the first motor 115 is installed on one side of the box body 111, and the power output shaft of the first motor 115 is fixedly connected to one end of the lead screw 114; the hydraulic cylinder 116 is installed on the moving block 112, and the extending end of the hydraulic cylinder 116 is fixedly connected to the top surface of the fine grinding block 101; the first chute 117 is opened on one side of the box body 111.

[0041] Specifically, when the first motor 115 operates, it will drive the lead screw 114 to rotate, thereby causing the lead screw nut 113 to move horizontally along the lead screw 114, and further causing the moving block 112 to move horizontally along the box body 111. When the moving block 112 moves, it will drive the hydraulic cylinder 116 to move, thereby adjusting the horizontal position of the fine grinding block 101. When the hydraulic cylinder 116 operates, the extending end of the hydraulic cylinder 116 will drive the fine grinding block 101 to move vertically, thereby adjusting the position of the fine grinding block 101.

[0042] As Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, the clamping mechanism 120 includes a mounting plate 121, a first rotating block 123, an adjusting screw 125, a movable plate 126, a second rotating block 127, and a second chute 128

[0043] On the top surface of the mounting plate 121, a first vertical plate 122, a second vertical plate 124, and a third vertical plate 129 are fixedly connected; the first rotating block 123 is rotatably connected to the mounting plate 121; the adjusting screw 125 passes through the second vertical plate 124 and is threadedly connected to the second vertical plate 124, and a handle is installed on the adjusting screw 125; the movable plate 126 is slidably connected to the mounting plate 121, and the movable plate 126 is rotatably connected to one end of the adjusting screw 125; the second rotating block 127 is rotatably connected to the movable plate 126, and the second rotating block 127 is used to cooperate with the first rotating block 123 to clamp the rotor shaft 200; the second chute 128 is opened on the mounting plate 121

[0044] Specifically, when it is necessary to clamp the rotor shaft 200, by rotating the handle on the adjusting screw 125, the adjusting screw 125 is driven to rotate and move, thereby pushing the movable plate 126 to move in the direction of the first vertical plate 122, and further reducing the distance between the second rotating block 127 and the first rotating block 123, so that the second rotating block 127 and the first rotating block 123 cooperate to clamp the rotor shaft 200

[0045] As Figure 7 and Figure 8 shown, the driving mechanism 150 includes a second motor 151 and a shaft rod 152. The second motor 151 is installed on the third vertical plate 129; one end of the shaft rod 152 is fixedly connected to the power output shaft of the second motor 151, and the other end of the shaft rod 152 is fixedly connected to the first rotating block 123

[0046] Specifically, when the second motor 151 operates, it will drive the shaft rod 152 to rotate, and then drive the first rotating block 123 to rotate. When the second rotating block 127 and the first rotating block 123 cooperate to clamp the rotor shaft 200, if at this time, the first rotating block 123 rotates, it will also drive the rotor shaft 200 and the second rotating block 127 to rotate

[0047] As Figure 2 shown, the rotor precision grinding processing equipment of the shaded pole motor further includes a connecting plate 131. One end of the connecting plate 131 is fixedly connected to the dust collection box 130, the other end of the connecting plate 131 is fixedly connected to the moving block 112, the connecting plate 131 is slidably connected to the first chute 117, and the dust collection box 130 is located directly below the precision grinding block 101

[0048] Specifically, when the moving block 112 moves, it drives the connecting plate 131 to move, and further drives the dust collection box 130 to move. Since the connecting plate 131 connects the moving block 112 and the dust collection box 130 together, when the moving block 112 drives the hydraulic cylinder 116 and the fine grinding block 101 to move, it also drives the dust collection box 130 to move synchronously, so that the dust collection box 130 is always directly below the fine grinding block 101, enabling the dust collection box 130 to always collect the debris generated by grinding.

[0049] As Figure 7 and Figure 8 shown, the rotor fine grinding processing equipment of the shaded pole motor further includes an air extraction mechanism 140, and the air extraction mechanism 140 includes a hollow box 141, a support block 142, a magnet plate 143, a connecting hose 144, a fixed cylinder 145, a support frame 146, a rotating shaft 147, a fan blade 148 and a transmission belt 149.

[0050] The hollow box 141 is installed on the bottom surface of the mounting plate 121, and the hollow box 141 is fixedly connected to the fixing frame 100. A box door is installed on the back of the hollow box 141 for facilitating the removal of the debris collected in the hollow box 141; the support block 142 is installed on the bottom surface of the mounting plate 121, and the support block 142 is fixedly connected to the fixing frame 100; the magnet plate 143 is inserted into the hollow box 141; one end of the connecting hose 144 is fixedly connected and communicated with the hollow box 141, and the other end of the connecting hose 144 is fixedly connected and communicated with the dust collection box 130, and the connecting hose 144 penetrates through the second chute 128; the fixed cylinder 145 is installed on one side of the hollow box 141; the support frame 146 is installed in the fixed cylinder 145; the rotating shaft 147 is rotatably connected to the support frame 146; the fan blade 148 is installed on the rotating shaft 147; pulley wheels are fixedly sleeved on both the rotating shaft 147 and the shaft rod 152, and the transmission belt 149 is sleeved on the two pulley wheels.

[0051] Specifically, when the second motor 151 operates, it drives the shaft rod 152 to rotate, and then drives the rotating shaft 147 to rotate through the transmission belt 149, and then drives the fan blade 148 to rotate. The rotating fan blade 148 blows the air in the fixed cylinder 145 outwards, making the inside of the hollow box 141 in a negative pressure state, and then the outside air enters the hollow box 141 through the dust collection box 130 and the connecting hose 144. When the fine grinding block 101 grinds the rotor shaft 200, debris will be generated, and these debris will be sucked into the dust collection box 130 together with the air. The debris and air in the dust collection box 130 will be transported into the hollow box 141 through the connecting hose 144. The magnet plate 143 in the hollow box 141 will adsorb the debris, thus preventing the debris from polluting the environment.

[0052] Among them, since the rotor shaft 200 is made of carbon steel, and the debris generated by grinding is also made of carbon steel, the debris can be adsorbed by the magnet plate 143.

[0053] Working principle: During specific use, place the rotor shaft 200 between the first rotating block 123 and the second rotating block 127. Then, by turning the handle on the adjusting screw 125, drive the adjusting screw 125 to rotate and move, thereby pushing the movable plate 126 towards the direction of the first vertical plate 122, and further reducing the distance between the second rotating block 127 and the first rotating block 123, so that the second rotating block 127 and the first rotating block 123 cooperate to clamp the rotor shaft 200.

[0054] Then, by starting the second motor 151, the second motor 151 drives the shaft rod 152 to rotate, thereby driving the first rotating block 123 to rotate, and further driving the rotor shaft 200 to rotate.

[0055] Then, by starting the hydraulic cylinder 116, the extending end of the hydraulic cylinder 116 pushes the fine grinding block 101 to move downward, so that the fine grinding block 101 contacts the rotor shaft 200, and the rotating rotor shaft 200 is ground by the fine grinding block 101.

[0056] After the part of the rotor shaft 200 in contact with the fine grinding block 101 is ground; by starting the hydraulic cylinder 116, the extending end of the hydraulic cylinder 116 drives the fine grinding block 101 to move upward, separating the fine grinding block 101 from the rotor shaft 200. Then, by starting the first motor 115, when the first motor 115 operates, it drives the lead screw 114 to rotate, thereby causing the lead screw nut 113 to move horizontally along the lead screw 114, and further causing the moving block 112 to move horizontally along the box body 111. When the moving block 112 moves, it drives the hydraulic cylinder 116 to move, thereby adjusting the horizontal position of the fine grinding block 101. Then, start the hydraulic cylinder 116 again, so that the extending end of the hydraulic cylinder 116 drives the fine grinding block 101 to move downward, and then the fine grinding block 101 grinds other parts of the rotor shaft 200.

[0057] Among them, when grinding the rotor shaft 200, the running second motor 151 drives the shaft rod 152 to rotate, thereby driving the rotating shaft 147 to rotate via the transmission belt 149, and further driving the fan blade 148 to rotate. The rotating fan blade 148 blows the air in the fixed cylinder 145 outward, making the inside of the hollow box 141 in a negative pressure state, and then the outside air enters the hollow box 141 through the dust collection box 130 and the connecting hose 144. When the fine grinding block 101 grinds the rotor shaft 200, debris will be generated, and these debris will be sucked into the dust collection box 130 together with the air. The debris and air in the dust collection box 130 will be transported to the hollow box 141 through the connecting hose 144. The magnet plate 143 in the hollow box 141 will adsorb the debris, thus avoiding environmental pollution by the debris.

[0058] When it is necessary to clean the debris in the hollow box 141, by pulling out the magnet plate 143 from the hollow box 141, during the movement of the magnet plate 143, the hollow box 141 will scrape the magnet plate 143, so as to scrape the debris adsorbed on the magnet plate 143 into the hollow box 141. Then, open the box door on the back of the hollow box 141 and take out the debris in the hollow box 141.

[0059] Embodiment 2: As Figures 1 - 9 shown, in the case where other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 lies in:

[0060] The rotor precision grinding processing equipment of the shaded pole motor further includes a control system;

[0061] The control system includes: a data acquisition and input module, a data analysis module, a data acquisition module, and a time prediction module. The modules are connected by wired / wireless means to realize data transmission.

[0062] The data acquisition and input module is used to acquire the comprehensive data information of the rotor precision grinding processing equipment. Among them, the comprehensive data information includes hardness data, surface roughness data, cumulative grinding duration data of the precision grinding block 101, rotation speed data, and temperature data.

[0063] Specifically, the hardness data is the hardness data of the rotor shaft 200 to be ground. The hardness data is a preset data. Before grinding, the hardness of the rotor shafts 200 of the same batch is detected by a Rockwell hardness tester or a Vickers hardness tester, and then the detected hardness data is input into the data acquisition and input module;

[0064] The surface roughness data is the surface roughness data of the rotor shaft 200, and the surface roughness data can be obtained by measuring the surface of the rotor shaft 200 with a surface roughness instrument (such as a profiler or a surface roughness instrument);

[0065] The cumulative grinding duration data of the precision grinding block 101 is obtained by measuring with a timer;

[0066] The rotation speed data is the rotation speed data of the rotor shaft 200. Since the rotor shaft 200 rotates following the rotation of the first rotating block 123, and the first rotating block 123 rotates synchronously with the power output of the second motor 151, that is, the rotation speed data of the rotor shaft 200 is equal to the rotation speed data of the second motor 151, and the rotation speed of the second motor 151 can be obtained by a Hall effect sensor;

[0067] The temperature data is the temperature data of the rotor shaft 200, and the temperature data can be obtained by measuring with an infrared temperature sensor.

[0068] The data analysis module generates a pressure influence coefficient according to the comprehensive data information, and judges and generates a corresponding pressure level according to the pressure influence coefficient;

[0069] The generation method of the pressure influence coefficient is as follows:

[0070]

[0071] In the formula, Yl is the pressure influence coefficient, Yd is the hardness data of the rotor shaft 200, Cc is the surface roughness data of the rotor shaft 200, Sc is the cumulative grinding duration data of the fine grinding block 101, Zs is the rotational speed data of the rotor shaft 200, Wd is the temperature data of the rotor shaft 200, and are both weight coefficients, which are determined by those skilled in the art according to specific application requirements and are both greater than 0;

[0072] Among them, materials with higher hardness require greater frictional force to remove substances. That is to say, the greater the hardness of the rotor shaft 200, the greater the grinding difficulty, so it is necessary to increase the pressure exerted by the fine grinding block 101 on the rotor shaft 200; vice versa.

[0073] The higher the surface roughness of the rotor shaft 200, the greater the grinding difficulty. The rougher the surface of the rotor shaft 200, the more force is required to level it, so it is necessary to increase the pressure of the fine grinding block 101 on the rotor shaft 200; vice versa.

[0074] The fine grinding block 101 will gradually wear with the increase of the cumulative grinding duration. The greater the cumulative grinding duration, the greater the wear degree of the fine grinding block 101, and the corresponding grinding efficiency is lower. Therefore, it is necessary to apply greater pressure to the rotor shaft 200 to maintain the grinding effect; vice versa.

[0075] When the rotational speed of the rotor shaft 200 is higher, the contact between the fine grinding block 101 and the rotor shaft 200 is more uneven, which also increases the grinding difficulty. Therefore, it is necessary to increase the pressure of the fine grinding block 101 to ensure uniform grinding; vice versa.

[0076] The higher the temperature of the rotor shaft 200, the softer the material of the rotor shaft 200 will become. The softer the material of the rotor shaft 200, the more pressure is required to remove the softer surface; vice versa.

[0077] It should be noted that the formulas involved above are all calculated by removing the dimension and taking their numerical values. They are obtained by collecting a large amount of data and performing software simulations to get a formula that is closest to the actual situation. The weight coefficients in the formula and various preset thresholds in the analysis process are set by those skilled in the art according to the actual situation or obtained through a large amount of data simulation; the magnitude of the weight coefficient is a specific value obtained by quantifying each parameter, which is convenient for subsequent comparison. Regarding the magnitude of the weight coefficient, it depends on the amount of sample data and the processing coefficients initially set by those skilled in the art for each group of sample data; as long as it does not affect the proportional relationship between the parameters and the quantified values.

[0078] The generation method of the pressure level is as follows:

[0079] The pressure level includes a primary pressure, a secondary pressure, and a tertiary pressure, where the primary pressure, secondary pressure, and tertiary pressure increase in sequence. The primary pressure, secondary pressure, and tertiary pressure are all the pressures of the fine grinding block 101 on the rotor shaft 200.

[0080] The threshold range of the preset pressure influence coefficient is Yl 1 、Yl 2 ,Yl 1 <Yl 2 ;

[0081] Yl 1 ≤Yl 2 At this time, the data analysis module generates the primary pressure;

[0082] If Yl 2 ≥Yl>Yl 1 At this time, the data analysis module generates the secondary pressure;

[0083] If Yl>Yl 2 At this time, the data analysis module generates the tertiary pressure.

[0084] Among them, Yl 1 and Yl 2 are determined by those skilled in the art according to specific application requirements.

[0085] Exemplarily,

[0086] The pressures of the fine grinding block 101 on the rotor shaft 200 corresponding to the primary pressure, secondary pressure, and tertiary pressure are 3 MPa, 6 MPa, and 9 MPa respectively; the pressure of the fine grinding block 101 on the rotor shaft 200 can also be customized according to specific circumstances; according to the corresponding pressure level, the pressure of the fine grinding block 101 on the rotor shaft 200 is controlled.

[0087] According to the corresponding pressure level, the data analysis module generates a corresponding pressure level control signal. For example, when the pressure level is the first-level pressure, the data analysis module generates a first-level pressure control signal, and then sends the first-level pressure control signal to the controller of the hydraulic cylinder 116, thereby controlling and adjusting the pressure of the hydraulic cylinder 116 on the fine grinding block 101, and further controlling and adjusting the pressure of the fine grinding block 101 on the rotor shaft 200.

[0088] A data acquisition module is used to collect the historical training data set of the rotor fine grinding processing equipment. The historical training data set includes the comprehensive influence data of fine grinding and the fine grinding duration. Among them, the comprehensive influence data of fine grinding includes comprehensive data information and the pressure data of the fine grinding block 101 on the rotor shaft 200. The pressure data of the fine grinding block 101 on the rotor shaft 200 can be measured and obtained through a pressure sensor.

[0089] The fine grinding duration refers to the time required from when the fine grinding block 101 starts to fine grind a certain part of the rotor shaft 200 to when it completes the fine grinding of a certain part of the rotor shaft 200. The fine grinding duration can be obtained through a timer.

[0090] A time prediction module trains and predicts a machine learning model for the fine grinding duration based on the historical training data set, collects real-time comprehensive influence data of fine grinding, and inputs it into the trained machine learning model to predict the fine grinding duration.

[0091] The training method of the machine learning model for predicting the fine grinding duration includes:

[0092] Convert the collected comprehensive influence data of fine grinding into a corresponding set of feature vectors.

[0093] Use each set of feature vectors as the input of the machine learning model. The machine learning model takes the fine grinding duration corresponding to each set of comprehensive influence data of fine grinding as the output, takes the actual fine grinding duration corresponding to each set of comprehensive influence data of fine grinding as the prediction target, and takes minimizing the loss function value of the machine learning model as the training target. Stop training when the loss function value of the machine learning model is less than or equal to the preset target loss value.

[0094] The machine learning model can be one of models such as SVM regression, random forest regression, or neural network regression.

[0095] The loss function value of the machine learning model is the mean square error.

[0096] The mean square error is one of the commonly used loss functions. By minimizing the loss function as the target to train the model, the machine learning model can better fit the data, thereby improving the performance and accuracy of the model.

[0097] In the loss function, MSE is the loss function value of the machine learning model, x is the feature vector group number; m is the number of feature vector groups; y x is the fine grinding duration predicted for the x-th group of feature vectors, and is the actual fine grinding duration corresponding to the x-th group of feature vectors;

[0098] Other model parameters of the machine learning model, the target loss value, the optimization algorithm, the ratios of the training set, test set, and validation set, and the optimization of the loss function are all obtained through actual engineering implementations and continuous experimental tuning.

[0099] Control the contact time between the fine grinding block 101 and the rotor shaft 200 according to the predicted fine grinding duration. When the contact time between the fine grinding block 101 and the rotor shaft 200 is the same as the predicted fine grinding duration, control the extension end of the hydraulic cylinder 116 to move upward, so that the fine grinding block 101 moves upward and separates from the rotor shaft 200.

[0100] In summary, the control system collects the comprehensive data information of the rotor shaft 200 through the data acquisition and input module. The data analysis module generates the pressure influence coefficient based on this information and judges and generates the corresponding pressure level, thereby dynamically adjusting the pressure of the fine grinding block 101 on the rotor shaft 200, optimizing the grinding quality, and ensuring that the fine grinding effect of the rotor shaft 200 meets the expectations.

[0101] The control system can also avoid over-grinding or under-grinding by precisely controlling the grinding pressure and grinding duration, thereby reducing material waste and production costs.

[0102] Embodiment 3: As Figures 1 - 8 shown, the working method of the rotor fine grinding processing equipment of the shaded pole motor includes the following steps:

[0103] Step 1: Place the rotor shaft 200 to be ground between the first rotating block 123 and the second rotating block 127. Rotate the handle on the adjusting screw 125 to drive the adjusting screw 125 to rotate and move. The movement of the adjusting screw 125 will push the movable plate 126 to slide towards the first vertical plate 122, reducing the distance between the second rotating block 127 and the first rotating block 123, and making the second rotating block 127 and the first rotating block 123 cooperate to firmly clamp the rotor shaft 200.

[0104] Step 2: Start the second motor 151. The second motor 151 drives the shaft rod 152 to rotate, which in turn drives the first rotating block 123 to rotate, and further drives the rotor shaft 200 and the second rotating block 127 to rotate synchronously.

[0105] Step 3: Start the hydraulic cylinder 116 in the adjustment mechanism 110, so that the extending end of the hydraulic cylinder 116 pushes the fine grinding block 101 downward until the fine grinding block 101 contacts the rotating rotor shaft 200. After the fine grinding block 101 contacts the rotor shaft 200, the fine grinding block 101 grinds the rotor shaft 200 to achieve the purpose of fine grinding;

[0106] Step 4: After the part of the rotor shaft 200 in contact with the fine grinding block 101 is ground, start the hydraulic cylinder 116 again, so that the extending end of the hydraulic cylinder 116 drives the fine grinding block 101 to move upward, separating the fine grinding block 101 from the rotor shaft 200;

[0107] Step 5: Start the first motor 115 to drive the lead screw 114 to rotate, and then make the lead screw nut 113 move horizontally along the lead screw 114, driving the moving block 112 to slide on the box body 111, thereby adjusting the horizontal position of the fine grinding block 101;

[0108] Step 6: Repeat Steps 3 to 5 until the entire surface to be ground of the rotor shaft 200 is completely ground;

[0109] Step 7: During the grinding process, the rotating shaft rod 152 drives the rotating shaft 147 to rotate through the transmission belt 149, and then drives the fan blade 148 to rotate, generating negative pressure, so that the outside air enters the hollow box 141 through the dust collection box 130 and the connecting hose 144. The debris is sucked into the dust collection box 130 together with the air and is transported to the hollow box 141 through the connecting hose 144. The magnet plate 143 in the hollow box 141 adsorbs the debris to prevent the debris from scattering and polluting the environment.

[0110] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

[0111] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. The rotor fine grinding equipment of shaded pole motor is characterized by: include: Fixed frame (100); A fine grinding block (101) for grinding the rotor shaft (200); An adjustment mechanism (110) mounted on the inner top surface of the fixing frame (100) and used for adjusting the position of the fine grinding block (101); A clamping mechanism (120) is mounted on the fixing frame (100) and is used to clamp the rotor shaft (200); A dust collecting box (130) having an opening at the top for collecting debris generated by grinding; The driving mechanism (150) is used to drive the rotor shaft (200) clamped by the clamping mechanism (120) to rotate.

2. The rotor fine grinding processing equipment of the shaded pole motor according to claim 1, characterized in that: The adjustment mechanism (110) comprises: A box body (111) is mounted on the inner top surface of the fixing frame (100), and its bottom is open; A moving block (112) is slidably connected to the box body (111); A lead screw nut (113) is installed through the moving block (112); A lead screw (114) is rotatably connected to the housing (111) and passes through the lead screw nut (113); A first motor (115) is installed on one side of the box (111), and a power output shaft thereof is fixedly connected to one end of the lead screw (114); A hydraulic cylinder (116) is mounted on the moving block (112), and an extended end thereof is fixedly connected to the top surface of the fine grinding block (101); The first sliding groove (117) is provided on one side of the box body (111).

3. The rotor fine grinding processing equipment of the shaded pole motor according to claim 2, characterized in that: The clamping mechanism (120) comprises: A mounting plate (121), the top surface of which is fixedly connected to a first vertical plate (122), a second vertical plate (124) and a third vertical plate (129); A first rotating block (123) is rotatably connected to the mounting plate (121); an adjusting screw (125), penetrating the second vertical plate (124) and being threadedly connected to the second vertical plate (124); A movable plate (126) is slidably connected to the mounting plate (121) and is rotationally connected to one end of the adjusting screw (125); a second rotating block (127) rotatably connected to the movable plate (126) and used to cooperate with the first rotating block (123) to clamp the rotor shaft (200); The second sliding groove (128) is provided on the mounting plate (121).

4. The rotor fine grinding processing equipment for shaded pole motor according to claim 3, characterized in that: The driving mechanism (150) comprises: A second motor (151) mounted on the third vertical plate (129); A shaft rod (152) has one end fixedly connected to the power output shaft of the second motor (151), and the other end fixedly connected to the first rotating block (123).

5. The rotor fine grinding processing equipment for shaded pole motor according to claim 5, characterized in that: Also includes: A connecting plate (131) has one end fixedly connected to the dust collecting box (130), and the other end fixedly connected to the moving block (112) and slidably connected to the first sliding groove (117).

6. The rotor fine grinding processing equipment for shaded pole motor according to claim 5, characterized in that: The device further comprises an air extraction mechanism (140), wherein the air extraction mechanism (140) comprises: A hollow box (141) is mounted on the bottom surface of the mounting plate (121) and is fixedly connected to the fixing frame (100); A support block (142) is mounted on the bottom surface of the mounting plate (121) and is fixedly connected to the fixing frame (100); A magnet plate (143) plugged into the hollow box (141); A connecting hose (144), one end of which is fixedly connected to and communicated with the hollow box (141), and the other end of which is fixedly connected to and communicated with the dust collecting box (130), and passes through the second slide groove (128); A fixed cylinder (145) installed on one side of the hollow box (141); A support frame (146) is installed in the fixing tube (145); A rotating shaft (147) is rotatably connected to the support frame (146); A fan blade (148) is mounted on the rotating shaft (147); A transmission belt (149) is sleeved on the rotating shaft (147) and the shaft rod (152).

7. The rotor fine grinding processing equipment for shaded pole motor according to claim 4, characterized in that: Also included is a control system, the control system comprising: A data collection and entry module, the data collection and entry module is used to collect comprehensive data information of the rotor fine grinding processing equipment, wherein the comprehensive data information includes hardness data, surface roughness data, cumulative grinding time data of the fine grinding block (101), rotation speed data and temperature data; The data analysis module generates a pressure influence coefficient according to the comprehensive data information, and generates a corresponding pressure level according to the pressure influence coefficient; A data acquisition module is used to collect a historical training data set of a rotor fine grinding processing device, the historical training data set including fine grinding comprehensive impact data and fine grinding duration; wherein the fine grinding comprehensive impact data includes comprehensive data information and pressure data of a fine grinding block (101) on a rotor shaft (200); The time prediction module trains a machine learning model to predict the polishing time based on the historical training data set, collects real-time polishing comprehensive impact data, and inputs it into the trained machine learning model to predict the polishing time.

8. The rotor fine grinding processing equipment for shaded pole motor according to claim 7, characterized in that: The pressure influence coefficient is generated as follows: Wherein, Yl is the pressure influence coefficient, Yd is the hardness data of the rotor shaft (200), Cc is the surface roughness data of the rotor shaft (200), Sc is the cumulative grinding time data of the fine grinding block (101), Zs is the rotation speed data of the rotor shaft (200), and Wd is the temperature data of the rotor shaft (200). and are all weight coefficients.

9. The rotor fine grinding processing equipment for shaded pole motor according to claim 8, characterized in that: The pressure levels are generated as follows: The pressure levels include primary pressure, secondary pressure and tertiary pressure, among which primary pressure, secondary pressure and tertiary pressure increase in sequence; The threshold range of the preset pressure influence coefficient is Yl1, Yl2, Yl1 <Yl2; Yl1≤Yl2, at this time, the data analysis module generates the first-level pressure; If Yl2≥Yl>Yl1, at this time, the data analysis module generates a secondary pressure; If Yl>Yl2, at this time, the data analysis module generates the third level of pressure.

10. The method for using the rotor fine grinding equipment of a shaded pole motor according to claim 6, characterized in that: The following steps are involved: Step 1: The rotor shaft (200) is firmly clamped by cooperating with the second rotating block (127) and the first rotating block (123); Step 2: Start the second motor (151) to drive the rotor shaft (200) to rotate via the shaft (152) and the first rotating block (123); Step 3: Start the hydraulic cylinder (116) to push the fine grinding block (101) downward, so that the fine grinding block (101) grinds the rotor shaft (200) to achieve the purpose of fine grinding; Step 4: After the grinding of the part where the rotor shaft (200) contacts the fine grinding block (101) is completed, the hydraulic cylinder (116) is started again, so that the extended end of the hydraulic cylinder (116) drives the fine grinding block (101) to move upward, so that the fine grinding block (101) is separated from the rotor shaft (200); Step 5: Start the first motor (115) to drive the lead screw (114) to rotate, thereby causing the lead screw nut (113) to move horizontally along the lead screw (114), driving the moving block (112) to slide on the box (111), thereby adjusting the horizontal position of the fine grinding block (101); Step 6: Repeat steps 3 to 5 until the entire surface to be ground of the rotor shaft (200) is finely ground.

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