A polishing device with wear compensation function for electromagnet processing

Abstract

The application discloses a polishing device with wear compensation function for electromagnet machining, which comprises a base, a fixing device, a machining device, a lifting device and a supporting frame, wherein the fixing device and the supporting frame are arranged above the base, and the polishing device is additionally provided with a compensation mechanism compared with the current polishing device for electromagnet machining. The compensation mechanism can detect the wear condition of the polishing mechanism in real time, control the descending range of the machining device through the lifting device, and achieve the wear compensation effect. In addition, the compensation mechanism can make the refrigerating fins arranged inside the transmission chamber work, thereby reducing the temperature inside the transmission chamber. The airflow inside the transmission chamber and the airflow in the cooling cavity inside the polishing disc can circulate through the second fan blade and the third fan blade, so that the heat generated by the friction between the polishing disc and the electromagnet core is prevented, and the polishing effect of the electromagnet core is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnet polishing, in particular to a polishing device with wear compensation function for electromagnet processing. BACKGROUND

[0002] With the rapid development of modern science and technology, ordinary magnets cannot meet people's needs, while the application range of electromagnets is becoming more and more extensive. The structure of electromagnet is very simple, that is, a power-matched conductive winding is wound outside the iron core. At present, most of the electromagnet cores are made of several groups of very thin silicon steel sheets. In order to avoid eddy current loss, hysteresis loss and heating problems, the electromagnet core usually needs to be polished before winding the conductive winding.

[0003] The polishing disc of the current polishing device for electromagnet processing will usually wear out after long-term use, so that the pressure of the polishing disc on the electromagnet core gradually decreases, and even the electromagnet core cannot contact the polishing disc. After the above-mentioned situation occurs, the defective rate of the electromagnet core will be significantly improved, thereby increasing the production cost. In addition, during the polishing process, the polishing disc and the electromagnet core will generate a large amount of heat due to friction. In order to achieve cooling effect, the current polishing device for electromagnet processing basically needs to additionally increase cooling equipment to cool the polishing disc and the electromagnet core. However, these cooling equipment cannot adjust the cooling temperature according to the heat change between the polishing disc and the electromagnet core. The cooling temperature of the current cooling equipment is usually fixed, and the polishing disc and the electromagnet core are prone to deformation. Finally, the current polishing device for electromagnet processing usually sets up a dust collection device, but the dust collection device often occurs blockage after long-term work. At this time, the workers often need to stop the machine and manually clean the dust collection device. This method not only increases the workload of the workers, but also reduces the work efficiency. SUMMARY

[0004] The purpose of the present application is to provide a polishing device with wear compensation function for electromagnet processing to solve the problems raised in the background art.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a polishing device with wear compensation function for electromagnet machining, the polishing device for electromagnet machining comprises a base, a fixing device, a machining device, a lifting device and a support frame, the fixing device and the support frame are arranged above the base, the machining device is arranged above the fixing device, the machining device is movably connected with the support frame through the lifting device, the fixing device comprises a first workbench and a second workbench, the first workbench is slidably installed on the base, the second workbench is slidably installed on the first workbench, a telescopic rod is arranged on the second workbench, the second workbench fixes the electromagnet core through the telescopic rod, the machining device comprises a polishing frame and a polishing mechanism, a compensation mechanism is arranged in the polishing frame, and the compensation mechanism is connected with the lifting device through wires.

[0006] The electromagnet core of different sizes is fixed through the telescopic rod, the electromagnet core is polished through the polishing mechanism, when the polishing mechanism is worn, the wear condition of the polishing mechanism is detected through the compensation mechanism, and the lifting device is controlled to work, so as to reduce the height of the machining device, so as to achieve the compensation effect, prevent the polishing mechanism from being unable to contact the electromagnet core or the pressure on the electromagnet core from being reduced due to wear, and thus affect the polishing effect, the first workbench and the second workbench can ensure that the polishing direction of the electromagnet core is consistent, and prevent the electromagnet core from being scratched during polishing, and the end of the support frame close to the lifting device is elastic, so as to reduce the vibration during the working process of the polishing device.

[0007] Further, the compensation mechanism comprises a permanent magnet and a coil, the permanent magnet is arranged on both sides of the coil, the machining device further comprises a second motor, a transmission chamber is formed in the polishing frame, a transmission shaft is arranged in the transmission chamber, one end of the transmission shaft is connected with the coil, the other end of the transmission shaft is connected with the polishing mechanism, a bevel gear is arranged on the transmission shaft, and the transmission shaft and the second motor are connected through the bevel gear.

[0008] During the polishing process of the electromagnet core, the second motor drives the transmission shaft to rotate through the bevel gear, the transmission shaft drives the polishing mechanism to work on one side, and drives the coil to rotate and cut the magnetic induction line on the other side, when the power and current of the second motor are constant, the smaller the pressure of the polishing mechanism on the electromagnet core is, the smaller the frictional resistance received is, and the rotational speed of the transmission shaft and the coil will increase, the wear degree of the polishing mechanism can be judged through the change of the induced current generated on the coil, at this time, the lifting device controls the machining device to descend, so as to achieve the wear compensation effect, ensure that the pressure of the polishing mechanism on the electromagnet core returns to the initial state, and prevent the polishing surface of the electromagnet core from being unevenly polished.

[0009] Further, the polishing mechanism comprises a polishing disc and a fixing sleeve, the fixing sleeve is arranged outside the transmission shaft, the polishing disc is in sliding connection with the fixing sleeve, the polishing disc is in transmission connection with the transmission shaft, the polishing disc is internally provided with a cooling cavity, one end of the fixing sleeve close to the polishing disc is internally provided with a circulating cavity, the circulating cavity is internally provided with a second fan blade and a third fan blade, one end of the circulating cavity is in communication with the transmission chamber, the other end of the circulating cavity is in communication with the cooling cavity arranged in the polishing disc, the second fan blade and the third fan blade drive the gas flow in opposite directions, the inner wall of the transmission chamber is provided with a refrigeration fin, and the refrigeration fin is connected with a coil.

[0010] Through the above technical scheme, the induced current generated by the coil cutting the magnetic induction line controls the operation of the lifting device, and also enables the refrigeration fin to work, so that the temperature inside the transmission chamber is reduced through the refrigeration fin, thereby ensuring that the performance of the internal components of the transmission chamber is always in a stable state, and the circulation of the airflow in the transmission chamber and the airflow in the cooling cavity arranged in the polishing disc is realized through the second fan blade and the third fan blade, so as to reduce the temperature of the polishing disc and prevent the heat generated by the friction between the polishing disc and the electromagnet core, thereby affecting the polishing effect of the electromagnet core.

[0011] Further, the second fan blade and the third fan blade are arranged in the circulating cavity through a fixing frame, the fixing frame is provided with a speed changer and a hollow gear, and the transmission shaft is provided with a common gear at one end close to the circulating cavity, the transmission shaft drives the second fan blade and the third fan blade to rotate through the common gear, the hollow gear and the speed changer.

[0012] Through the above technical scheme, the transmission shaft rotates the polishing disc, which drives the second fan blade and the third fan blade to rotate, the circulation of the airflow in the transmission chamber and the airflow in the cooling cavity is realized through the second fan blade and the third fan blade, when the induced current generated on the coil is large, it means that the pressure of the polishing disc on the electromagnet core is large, at this time, the heat generated at the bottom end of the polishing disc will be higher than that when the pressure of the polishing disc on the electromagnet core is small, the speed of the second fan blade and the third fan blade can be changed through the speed changer, so as to adjust the circulation speed of the airflow in the transmission chamber and the airflow in the cooling cavity, and ensure that the circulation speed of the airflow in the transmission chamber and the airflow in the cooling cavity is always positively correlated with the heat generated at the bottom end of the polishing disc, and the hollow gear arranged on the fixing frame can prevent the airflow in the transmission chamber and the airflow in the cooling cavity from flowing unsmoothly when circulating.

[0013] Further, the processing device further comprises a first motor, an air suction cover and a waste box, the top end of the polishing frame is provided with a first fan blade, the first motor is in transmission connection with the first fan blade, the lower portion of the first fan blade is provided with a ventilation slot, the first fan blade is connected with the waste box through the ventilation slot, the lower portion of the ventilation slot is provided with a first air suction slot and a second air suction slot, the ventilation slot is connected with the air suction cover through the first air suction slot and the second air suction slot, the end of the first air suction slot close to the air suction cover is provided with a reversing chamber, the inside of the reversing chamber is provided with a reversing plate, the end of the second air suction slot close to the air suction cover is provided with a receiving slot, the inside of the receiving slot is provided with a baffle.

[0014] When the electromagnet core is polished, the first motor drives the first fan blade to rotate, air outside can be sucked into the polishing frame through the first fan blade, and is blown into the waste box through the ventilation slot, according to Bernoulli's principle, negative pressure is generated in the first air suction slot and the second air suction slot, when the baffle blocks the second air suction slot and the reversing plate does not block the first air suction slot, the debris and polishing agent generated in the polishing process can enter the waste box along the air suction cover, the first air suction slot and the ventilation slot, when the reversing plate blocks the first air suction slot and the baffle does not block the second air suction slot, the debris and polishing agent generated in the polishing process can enter the waste box along the air suction cover, the second air suction slot and the ventilation slot, through the above technical solution, the debris and polishing agent can be prevented from blocking the air suction slot, so that the polishing work can be normally carried out when one air suction slot is blocked, and the fault tolerance of the device is improved.

[0015] Further, the inside of the waste box is provided with a scrap iron chamber and a powder chamber, the scrap iron chamber is arranged at one end of the waste box air inlet, the end of the scrap iron chamber close to the ventilation slot is provided with a second magnetic block, the end of the waste box air inlet away from the ventilation slot is provided with a first movable plate, and the upper portion of the powder chamber is provided with a filter plate.

[0016] When the debris and polishing agent follow the external airflow into the waste box, the first movable plate will be blown up, the scrap iron in the debris can be deflected by the second magnetic block and thus fly into the scrap iron chamber, and other substances in the debris and the polishing agent can continue to move forward and thus enter the powder chamber, through the above technical solution, the scrap iron in the debris, the particles dropped by the polishing disc and the polishing agent and other substances can be separated, after the work is completed, the first movable plate will automatically fall down under the action of gravity, the first movable plate can prevent the polishing agent in the powder chamber from falling into the scrap iron chamber, which is convenient for subsequent recycling of the scrap iron by the workers, and the filter plate can prevent the particles dropped by the polishing disc and the polishing agent and other substances from flowing into the external environment and thus causing damage to the health of the workers.

[0017] Further, the upper side of the filter plate is provided with a second movable plate and a communication pipe, the side of the second movable plate away from the communication pipe is provided with a third magnetic field generator, the end of the second movable plate close to the third magnetic field generator is magnetic, the end of the communication pipe close to the filter plate is provided with a third movable plate and a spring support rod, the waste box is connected with the reversing chamber through the communication pipe and the air conveying pipe, the reversing chamber is connected with the first air suction groove through a communication groove, the end of the reversing plate close to the baffle is magnetic, the end of the baffle close to the reversing plate is magnetic, the reversing plate and the baffle attract each other, the horizontal section of the first air suction groove is circular structure, the gas outlet of the communication groove is tangent to the first air suction groove, and the diameter of the gas outlet of the communication groove is smaller than the diameter of the communication pipe and the air conveying pipe.

[0018] When the first air suction groove is blocked or needs to be cleaned, the third magnetic field generator generates a set of magnetic fields repelling the second movable plate, at this time the second movable plate is closed, and then the air pressure above the filter plate gradually increases, when the gas accumulated above the filter plate reaches a certain degree, the supporting force of the spring support rod on the third movable plate is less than the thrust of the gas on the third movable plate, when the third movable plate is pushed away, the gas in the waste box enters the reversing chamber along the air conveying pipe, and the reversing plate moves towards the second air suction groove, the reversing plate can block the first air suction groove on one hand, and make the baffle move towards the first air suction groove on the other hand, thereby achieving the purpose of opening the second air suction groove, the gas in the waste box flows into the first air suction groove from the communication groove after entering the reversing chamber, at this time the flow rate of the gas is very large, and a gas flow rotating along the axis of the first air suction groove is formed in the first air suction groove, the debris and polishing agent in the first air suction groove can be cleaned by the group of gas flows, through the above technical solution, the first air suction groove does not affect the normal work of the polishing device during cleaning, and the debris and polishing agent generated during polishing can continue to enter the waste box along the air suction cover, the second air suction groove and the air conveying groove.

[0019] Further, the movable end of the telescopic rod is internally provided with a first cavity and a second cavity, the inside of the first cavity is provided with a spring rod, the end of the spring rod extending out of the telescopic rod is provided with a fixed block, the first cavity is in communication with the second cavity, the inside of the first cavity is filled with insulating liquid, the inside of the second cavity is provided with two groups of conductive blocks, the two groups of conductive blocks are filled with gaseous conductive medium, one group of conductive blocks is connected with an external power supply, and the other group of conductive blocks is connected with the first workbench and the second workbench.

[0020] During the polishing process of the electromagnet core, the first workbench and the second workbench are always in a moving state, at this time, the electromagnet core will be subjected to a set of forces opposite to the moving direction of the first workbench and the second workbench, since the electromagnet core is usually made of several groups of silicon steel sheets with very thin thickness, therefore, the clamping force of the telescopic rod on the electromagnet core is usually not very large, the first cavity and the second cavity are arranged in the movable end of the telescopic rod, when the electromagnet core moves, the fixed block and the spring rod are pressed, so that the insulating liquid in the first cavity flows into the second cavity, at this time, the distance between the two groups of conductive blocks arranged in the second cavity becomes smaller, the concentration of gaseous conductive medium between the two groups of conductive blocks increases, the current input by the external power supply to the fixing device and the lifting device will increase accordingly, when the fixing device receives the increased current, the moving speed will be reduced, thereby avoiding the continuous movement of the electromagnet core, and ensuring the polishing quality.

[0021] Further, the second workbench is provided with a detection groove, a detection plate is arranged above the detection groove, the detection groove and the detection plate are connected through a spring, a detection seat is arranged in the detection groove, a third cavity and a fourth cavity are arranged in the detection seat, the third cavity and the fourth cavity are filled with conductive liquid and are in communication, two groups of conductive plates are arranged in the third cavity, one group of conductive plates is fixedly installed at the bottom end of the third cavity, and the other group of conductive plates is connected with the detection plate through a connecting rod, and an extrusion block is arranged in the fourth cavity and connected with the fourth cavity through a spring.

[0022] Through the above technical scheme, during the polishing process of the electromagnet core, the position of the detection plate should be in a certain fixed interval, which is related to the weight of the electromagnet core and the pressure of the polishing mechanism on the electromagnet core, since the weight of the debris generated by polishing is very small, the weight change of the electromagnet core can be ignored, the moving range of the detection plate can be used to judge the pressure of the polishing mechanism on the electromagnet core, the moving range of the detection plate can be judged according to the distance between the two groups of conductive plates, that is, the current received by the lifting device, through the detection seat, the initial pressure of the polishing mechanism on the electromagnet core can be avoided to be too large, so that the polishing effect of the electromagnet core is not good, at the same time, through the detection seat, the compensation mechanism can also be calibrated, so that the compensation mechanism can accurately compensate the height reduced by the wear of the polishing mechanism, and the pressure of the polishing mechanism on the electromagnet core is always in a fixed state.

[0023] Further, the upper middle position of the detection plate is provided with a positioning seat, the inside of the positioning seat is provided with a first magnetic field generator, the outside of the positioning seat is provided with a positioning rod, the inside of the detection groove is slidably provided with a second magnetic field generator, one end of the detection plate close to the second magnetic field generator is provided with a sliding rod, the sliding rod is provided with a top plate, the end of the top plate close to the positioning rod is magnetic, the end of the positioning rod close to the top plate is provided with a positioning plate, the end of the positioning plate close to the top plate is magnetic, the positioning plate and the top plate are attracted to each other, the side of the second magnetic field generator away from the top plate is provided with two groups of magnetic separation plates, the side of the two groups of magnetic separation plates away from the second magnetic field generator is provided with a V-shaped plate and a first magnetic block, the end of the V-shaped plate close to the magnetic separation plate is provided with a guide rod, the end of the second magnetic field generator close to the first magnetic block is magnetic, and the second magnetic field generator and the first magnetic block are repelled.

[0024] The electromagnetic core is usually stacked by several groups of silicon steel sheets with very small thickness. In the stacking process, one end of the electromagnetic core is often protruded and the other end is often recessed due to the irregular stacking. If the polishing is continued at this time, the workpiece after polishing will have a part of the recessed area, thereby affecting the performance of the electromagnet. The upper middle position of the detection plate is provided with a positioning seat. Before work, the electromagnetic core is placed on the detection plate, and the positioning seat is ensured to be located in the inside of the electromagnetic core. At this time, the first magnetic field generator generates a group of alternating magnetic fields to make the inner wall of the electromagnetic core generate induced eddy current. The eddy current receiver can judge the size of the electromagnetic core from the positioning seat. Finally, the positioning rod can make the positioning seat located in the center of the electromagnetic core, thereby facilitating the subsequent polishing work. The positioning rod moves the top plate during movement. The second magnetic field generator moves below the ends of the electromagnetic core through the top plate. At this time, the second magnetic field generator generates a group of alternating magnetic fields to make the lower end of the electromagnetic core generate induced eddy current. The size of the induced eddy current can judge whether the electromagnetic core has obvious recess. The silicon steel sheet is prevented from being polished due to irregular stacking, thereby avoiding the influence of the performance of the subsequent electromagnet. After work, the detection plate is automatically raised under the action of the spring. The V-shaped plate becomes an I-shaped plate. The magnetic separation plate is opened through the guide rod on the V-shaped plate. The second magnetic field generator is reset through the first magnetic block.

[0025] Compared with the prior art, the present application has the following advantages: the present application adds a compensation mechanism to the current electromagnet polishing device, which can detect the wear of the polishing mechanism in real time, then controls the descending amplitude of the processing device through the lifting device, and thus achieves the effect of wear compensation, ensuring that the pressure of the polishing mechanism on the electromagnet core is in a stable state, preventing the polishing surface of the electromagnet core from being unevenly polished, and on the other hand, the compensation mechanism can make the refrigerating fins inside the transmission chamber work, thereby reducing the temperature inside the transmission chamber, and the second and third fan leaves can make the airflow inside the transmission chamber circulate with the airflow in the cooling cavity inside the polishing disc, thereby reducing the temperature of the polishing disc and preventing the polishing disc and the electromagnet core from generating heat due to friction, affecting the polishing effect of the electromagnet core, the third magnetic field generator and the second movable plate are arranged inside the waste tank, the third magnetic field generator, the second movable plate and the air conveying pipe can make the gas in the waste tank enter the reversing chamber, the reversing plate can block the first air suction groove while opening the second air suction groove, and the communication groove can make the gas in the waste tank form a rotating airflow along the axis of the first air suction groove, which can clean the debris and polishing agent in the first air suction groove, and the first air suction groove will not affect the normal work of the polishing device during the cleaning process, ensuring the work efficiency, the detection groove and the detection plate are arranged on the second workbench, the positioning seat on the detection plate and the positioning rod can make the positioning seat located at the center of the electromagnet core, facilitating subsequent polishing of the electromagnet core, the positioning rod and the top plate can move the second magnetic field generator below each end of the electromagnet core before polishing, the second magnetic field generator can determine whether the silicon steel sheets are stacked neatly, avoiding the rejection of the polished electromagnet core due to depression in some areas, and the detection seat arranged inside the detection groove can avoid excessive initial pressure of the polishing mechanism on the electromagnet core, so that the polishing effect of the electromagnet core is not good. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, together with the embodiments of the application, to explain the application, and do not constitute a limitation on the application. In the drawings:

[0027] Figure 1 is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 is a schematic diagram of the processing device structure of the present application;

[0029] Figure 3 is a schematic diagram of the polishing mechanism structure of the present application;

[0030] Figure 4 is a schematic diagram of the polishing mechanism cooling process structure of the present application;

[0031] Figure 5 is a schematic view of the internal structure of the waste box of the present application; Figure 2

[0032] Figure 6 is a schematic view of the internal structure of the waste box of the present application;

[0033] Figure 7 is a schematic view of the internal gas flow structure of the waste box when cleaning the first air suction slot of the present application;

[0034] Figure 8 is a schematic view of the internal gas flow structure of the first and second air suction slots when cleaning the first air suction slot of the present application;

[0035] Figure 9 is a schematic view of the fixing device of the present application;

[0036] Figure 10 is a schematic view of the internal structure of the waste box of the present application; Figure 9

[0037] Figure 11 is a schematic view of the internal structure of the waste box of the present application; Figure 9

[0038] Figure 12 is a schematic view of the fixing device when the silicon steel sheets are not stacked in order of the present application;

[0039] Figure 13 is a schematic view of the fixing device after the polishing work of the present application.

[0040] ​​​In the figure: 1-base, 2-fixing device, 21-first workbench, 22-second workbench, 221-telescopic rod, 2211-first cavity, 2212-spring rod, 2213-fixing block, 2214-second cavity, 22141-conductive block, 222-positioning seat, 2221-positioning rod, 2222-first magnetic field generator, 223-detection groove, 2231-V-shaped plate, 2232-first magnetic block, 2233-magnetic isolation plate, 2234-second magnetic field generator, 2235-detection seat, 22351-conductive plate, 22352-third cavity, 22353-fourth cavity, 22354-extrusion block, 224-detection plate, 2241-top plate, 3-processing device, 31-polishing frame, 311-ventilation groove, 312-first fan blade, 313-compensation mechanism, 3131-permanent magnet, 3132-coil, 314-transmission chamber, 3141-transmission shaft, 315-first air suction groove, 316-second air suction groove, 3161-baffle, 317-reversing chamber, 3171-reversing plate, 3172-communication groove, 32-first motor, 33-second motor, 34-polishing mechanism, 341-polishing disc, 342-fixing sleeve, 3421-fixing frame, 3422-second fan blade, 3423-third fan blade, 35-air suction cover, 36-waste box, 361-iron filings chamber, 362-first movable plate, 3611-second magnetic block, 363-powder chamber, 364-second movable plate, 365-third magnetic field generator, 366-communication pipe, 3661-third movable plate, 367-filtering plate, 37-air conveying pipe, 4-lifting device, 5-supporting frame. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] As Figures 1-13As shown, a polishing device for electromagnet processing with wear compensation function is disclosed. The polishing device for electromagnet processing includes a base 1, a fixing device 2, a processing device 3, a lifting device 4, and a support frame 5. The fixing device 2 and the support frame 5 are both located above the base 1. The processing device 3 is located above the fixing device 2. The processing device 3 is movably connected to the support frame 5 through the lifting device 4. The fixing device 2 includes a first worktable 21 and a second worktable 22. The first worktable 21 is slidably mounted on the base 1, and the second worktable 22 is slidably mounted on the first worktable 21. The first worktable 21 can slide left and right on the base 1, and the second worktable 22 can slide back and forth on the first worktable 21. A telescopic rod 221 is provided on the second worktable 22. The second worktable 22 is fixed to the electromagnet core through the telescopic rod 221. The processing device 3 includes a polishing frame 31 and a polishing mechanism 34. A compensation mechanism 313 is provided inside the polishing frame 31. The compensation mechanism 313 is connected to the lifting device 4 through a wire.

[0043] Electromagnet cores of different sizes are fixed by telescopic rod 221. The electromagnet cores are polished by polishing mechanism 34. When the polishing mechanism 34 is worn, the wear condition of the polishing mechanism 34 is detected by compensation mechanism 313 and the lifting device 4 is controlled to work, thereby reducing the height of the processing device 3 to achieve the compensation effect. This prevents the polishing mechanism 34 from being unable to contact the electromagnet core due to wear or reducing the pressure on the electromagnet core, which would affect the polishing effect. The first worktable 21 and the second worktable 22 can ensure that the polishing direction of the electromagnet core is consistent, preventing scratches on the electromagnet core during the polishing process. The end of the support frame 5 near the lifting device 4 is elastic to reduce the vibration during the operation of the polishing device.

[0044] like Figure 1 and Figure 2 As shown, the compensation mechanism 313 includes a permanent magnet 3131 and a coil 3132. The permanent magnet 3131 is disposed on both sides of the coil 3132. The coil 3132 is connected to the lifting device 4. The processing device 3 also includes a second motor 33. The polishing frame 31 has a transmission chamber 314 inside. The transmission chamber 314 has a transmission shaft 3141 inside. One end of the transmission shaft 3141 is connected to the coil 3132, and the other end of the transmission shaft 3141 is connected to the polishing mechanism 34. A bevel gear is disposed on the transmission shaft 3141, and the transmission shaft 3141 and the second motor 33 are connected by bevel gear transmission.

[0045] Through the technical scheme, in the polishing process of the electromagnet core, the second motor 33 rotates the transmission shaft 3141 through the bevel gear, and the transmission shaft 3141 drives the polishing mechanism 34 to work on one hand, and drives the coil 3132 to rotate and cut the magnetic induction line on the other hand. According to the law of electromagnetic induction, an induced current is generated on the coil 3132. When the power and current of the second motor 33 are constant, the smaller the pressure of the polishing mechanism 34 on the electromagnet core, the smaller the frictional resistance, and the rotational speed of the transmission shaft 3141 and the coil 3132 increases. The wear degree of the polishing mechanism 34 can be determined by the change of the induced current generated on the coil 3132. At this time, the lifting device 4 controls the lowering of the machining device 3, thereby achieving the effect of wear compensation, ensuring that the pressure of the polishing mechanism 34 on the electromagnet core returns to the initial state, and preventing the polishing surface of the electromagnet core from being unevenly polished.

[0046] As shown in Figures 1-4 The polishing mechanism 34 includes a polishing disc 341 and a fixed sleeve 342. The fixed sleeve 342 is arranged outside the transmission shaft 3141, the polishing disc 341 is in sliding connection with the fixed sleeve 342, the polishing disc 341 is in transmission connection with the transmission shaft 3141, the inside of the polishing disc 341 is provided with a cooling cavity, the inside of the fixed sleeve 342 close to one end of the polishing disc 341 is provided with a circulating cavity, the inside of the circulating cavity is provided with a second fan blade 3422 and a third fan blade 3423, one end of the circulating cavity is in communication with the transmission chamber 314, the other end of the circulating cavity is in communication with the cooling cavity arranged in the polishing disc 341, the second fan blade 3422 and the third fan blade 3423 drive the gas to flow in opposite directions, and the inner wall of the transmission chamber 314 is provided with a refrigeration fin connected with the coil 3132.

[0047] Through the technical scheme, the induced current generated by the coil 3132 cutting the magnetic induction line controls the work of the lifting device 4 on one hand, and enables the refrigeration fin to work on the other hand. The refrigeration fin can reduce the temperature inside the transmission chamber 314, so as to ensure that the performance of the internal components of the transmission chamber 314 is always stable. At the same time, the second fan blade 3422 and the third fan blade 3423 can make the airflow in the transmission chamber 314 and the airflow in the cooling cavity arranged in the polishing disc 341 circulate, thereby reducing the temperature of the polishing disc 341 and preventing the polishing disc 341 and the electromagnet core from generating heat due to friction, which affects the polishing effect of the electromagnet core.

[0048] As shown in Figures 1-4As shown, the second fan blade 3422 and the third fan blade 3423 are arranged inside the circulating cavity through the fixing frame 3421, the fixing frame 3421 is provided with a transmission and a hollow gear, the ordinary gear is arranged at one end of the transmission shaft 3141 close to the circulating cavity, the transmission shaft 3141 drives the second fan blade 3422 and the third fan blade 3423 to rotate through the ordinary gear, the hollow gear and the transmission, and the transmission is connected with the coil 3132.

[0049] Through the above technical scheme, in the process of driving the polishing disc 341 to rotate, the transmission shaft 3141 can drive the second fan blade 3422 and the third fan blade 3423 to rotate, the airflow in the transmission chamber 314 and the airflow in the cooling cavity can circulate through the second fan blade 3422 and the third fan blade 3423, when the induced current generated on the coil 3132 is large, it means that the pressure of the polishing disc 341 on the electromagnetic iron core is large, at this time, the heat generated at the bottom end of the polishing disc 341 will be higher than that when the pressure of the polishing disc 341 on the electromagnetic iron core is small, the transmission can change the rotating speed of the second fan blade 3422 and the third fan blade 3423, so as to adjust the circulating flow speed of the airflow in the transmission chamber 314 and the airflow in the cooling cavity, and ensure that the circulating flow speed of the airflow in the transmission chamber 314 and the airflow in the cooling cavity is always positively correlated with the heat generated at the bottom end of the polishing disc 341, and the hollow gear arranged on the fixing frame 3421 can prevent the airflow in the transmission chamber 314 and the airflow in the cooling cavity from flowing unsmoothly when circulating.

[0050] As shown in the figure, Figures 1-8 The machining device 3 further includes a first motor 32, an air suction cover 35 and a waste box 36, the top end of the polishing frame 31 is provided with a first fan blade 312, the first motor 32 is in transmission connection with the first fan blade 312, the lower portion of the first fan blade 312 is provided with a ventilation groove 311, the first fan blade 312 is connected with the waste box 36 through the ventilation groove 311, the lower portion of the ventilation groove 311 is provided with a first air suction groove 315 and a second air suction groove 316, the ventilation groove 311 is connected with the air suction cover 35 through the first air suction groove 315 and the second air suction groove 316, the first air suction groove 315 is provided with a reversing chamber 317 at one end close to the air suction cover 35, the reversing chamber 317 is internally provided with a reversing plate 3171, the second air suction groove 316 is provided with a receiving groove at one end close to the air suction cover 35, and the receiving groove is internally provided with a baffle 3161.

[0051] When the electromagnet core is polished, the first motor 32 drives the first fan blade 312 to rotate, and the external air is sucked into the polishing frame 31 through the first fan blade 312, and is blown into the waste box 36 through the ventilation groove 311. According to Bernoulli's principle, negative pressure is generated in the first air suction groove 315 and the second air suction groove 316. When the baffle 3161 blocks the second air suction groove 316 and the reversing plate 3171 does not block the first air suction groove 315, the debris and polishing agent generated during polishing enter the waste box 36 along the air suction cover 35, the first air suction groove 315 and the ventilation groove 311. When the reversing plate 3171 blocks the first air suction groove 315 and the baffle 3161 does not block the second air suction groove 316, the debris and polishing agent generated during polishing enter the waste box 36 along the air suction cover 35, the second air suction groove 316 and the ventilation groove 311. Through the above technical scheme, the debris and polishing agent can be prevented from blocking the air suction groove, so that when one air suction groove is blocked, the polishing work can be normally carried out, and the fault tolerance of the device is improved.

[0052] As shown in Figures 1-8 The inside of the waste box 36 is provided with a scrap iron chamber 361 and a powder chamber 363. The scrap iron chamber 361 is arranged at one end of the air inlet of the waste box 36, and the second magnetic block 3611 is arranged at one end of the scrap iron chamber 361 close to the ventilation groove 311. The first movable plate 362 is arranged at one end of the air inlet of the waste box 36 away from the ventilation groove 311. The upper part of the powder chamber 363 is provided with a filter plate 367.

[0053] When the debris and polishing agent follow the external airflow into the waste box 36, the first movable plate 362 is blown up, and the second magnetic block 3611 can deflect the iron scraps in the debris, so that they fly into the scrap iron chamber 361. Other substances in the debris and the polishing agent continue to move forward, so as to enter the powder chamber 363. Through the above technical scheme, the iron scraps in the debris, the particles dropped from the polishing disc 341 and the polishing agent and other substances can be separated. After the work is completed, the first movable plate 362 will automatically fall under the action of gravity. The first movable plate 362 can prevent the polishing agent in the powder chamber 363 from falling into the scrap iron chamber 361, which facilitates the subsequent recycling of the iron scraps by the workers. The filter plate 367 prevents the particles dropped from the polishing disc 341 and the polishing agent and other substances from flowing into the external environment, thereby causing damage to the health of the workers.

[0054] As shown in Figures 1-8As shown, the upper side of the filter plate 367 is provided with a second movable plate 364 and a communication pipe 366, the side of the second movable plate 364 away from the communication pipe 366 is provided with a third magnetic field generator 365, the end of the second movable plate 364 close to the third magnetic field generator 365 is magnetic, the end of the communication pipe 366 close to the filter plate 367 is provided with a third movable plate 3661 and a spring support rod, the waste box 36 is connected with the reversing chamber 317 through the communication pipe 366 and the air conveying pipe 37, the reversing chamber 317 is connected with the first air suction groove 315 through a communication groove 3172, the end of the reversing plate 3171 close to the baffle 3161 is magnetic, the end of the baffle 3161 close to the reversing plate 3171 is magnetic, the reversing plate 3171 and the baffle 3161 attract each other, the horizontal section of the first air suction groove 315 is a circular structure, the gas outlet of the communication groove 3172 is tangent to the first air suction groove 315, and the diameter of the gas outlet of the communication groove 3172 is smaller than the diameter of the communication pipe 366 and the air conveying pipe 37.

[0055] When the first air suction groove 315 is blocked or needs to be cleaned, the third magnetic field generator 365 generates a set of magnetic fields repelling the second movable plate 364, at this time the second movable plate 364 is closed, and then the air pressure above the filter plate 367 gradually increases, when the gas accumulated above the filter plate 367 reaches a certain degree, the supporting force of the spring support rod on the third movable plate 3661 is less than the thrust of the gas on the third movable plate 3661, when the third movable plate 3661 is pushed away, the gas in the waste box 36 enters the reversing chamber 317 along the air conveying pipe 37, and the reversing plate 3171 moves towards the second air suction groove 316, through the reversing plate 3171, the baffle 3161 moves towards the first air suction groove 315, thereby achieving the purpose of opening the second air suction groove 316, the gas in the waste box 36 enters the first air suction groove 315 from the communication groove 3172 after entering the reversing chamber 317, at this time the flow rate of the gas is very large, and a gas flow rotating along the axis of the first air suction groove 315 is formed in the first air suction groove 315, through the set of gas flows, the debris and polishing agent in the first air suction groove 315 can be cleaned, through the above technical solution, the first air suction groove 315 does not affect the normal work of the polishing device during cleaning, and the debris and polishing agent generated during polishing will continue to enter the waste box 36 along the air suction cover 35, the second air suction groove 316 and the ventilation groove 311.

[0056] As Figures 1-13As shown, the movable end of the telescopic rod 221 is internally provided with a first cavity 2211 and a second cavity 2214, the first cavity 2211 is internally provided with a spring rod 2212, the spring rod 2212 extends out of one end of the telescopic rod 221 and is provided with a fixed block 2213, the first cavity 2211 is in communication with the second cavity 2214, the inside of the first cavity 2211 is filled with insulating liquid, and the inside of the second cavity 2214 is provided with two groups of conductive blocks 22141, the two groups of conductive blocks 22141 are filled with gaseous conductive medium, one group of the conductive blocks 22141 is connected with the external power supply, and the other group of the conductive blocks 22141 is connected with the first workbench 21 and the second workbench 22.

[0057] During the polishing process, the first workbench 21 and the second workbench 22 are always in a state of movement, at this time the electromagnet core will be subjected to a group of forces opposite to the moving direction of the first workbench 21 and the second workbench 22, since the electromagnet core is usually made of several groups of very thin silicon steel sheets, therefore the clamping force of the telescopic rod 221 on the electromagnet core is usually not very large, the inside of the movable end of the telescopic rod 221 is internally provided with a first cavity 2211 and a second cavity 2214, when the electromagnet core moves, the fixed block 2213 and the spring rod 2212 are squeezed, so that the insulating liquid in the first cavity 2211 flows into the second cavity 2214, at this time the distance between the two groups of conductive blocks 22141 arranged in the inside of the second cavity 2214 becomes smaller, the concentration of the gaseous conductive medium between the two groups of conductive blocks 22141 increases, and the current input to the fixing device 2 and the lifting device 4 by the external power supply will increase, when the fixing device 2 receives the increased current, the moving speed will be reduced, thereby avoiding the electromagnet core from continuing to move, and ensuring the quality of polishing.

[0058] As shown in the figure, Figures 1-13 As shown, the second workbench 22 is provided with a detection groove 223, the detection groove 223 is provided with a detection plate 224 above, the detection groove 223 and the detection plate 224 are connected through springs, the inside of the detection groove 223 is provided with a detection seat 2235, the inside of the detection seat 2235 is internally provided with a third cavity 22352 and a fourth cavity 22353, the inside of the third cavity 22352 and the fourth cavity 22353 is filled with conductive liquid and is in communication, the inside of the third cavity 22352 is provided with two groups of conductive plates 22351, one group of the conductive plates 22351 is fixedly installed at the bottom end of the third cavity 22352, the other group of the conductive plates 22351 is connected with the detection plate 224 through a connecting rod, the inside of the fourth cavity 22353 is provided with a squeezing block 22354, the squeezing block 22354 and the fourth cavity 22353 are connected through springs, one group of the conductive plates 22351 is connected with the external power supply, and the other group of the conductive plates 22351 is connected with the lifting device 4.

[0059] Through the technical scheme, the position of the detection plate 224 should be in a certain fixed interval during the polishing process, which is related to the weight of the electromagnet core and the pressure of the polishing mechanism 34 on the electromagnet core. Since the weight of the debris generated by polishing is very small, the weight change of the electromagnet core can be ignored. The movement range of the detection plate 224 can be used to determine the pressure of the polishing mechanism 34 on the electromagnet core. The movement range of the detection plate 224 can be determined according to the distance between the two groups of conductive plates 22351, i.e. the current received by the lifting device 4. Through the detection seat 2235, the initial pressure of the polishing mechanism 34 on the electromagnet core can be avoided, so that the polishing effect of the electromagnet core is not good. At the same time, the detection seat 2235 can also calibrate the compensation mechanism 313, so that the compensation mechanism 313 can accurately compensate for the height reduction of the polishing mechanism 34 due to wear, and ensure that the pressure of the polishing mechanism 34 on the electromagnet core is always in a fixed state.

[0060] As shown in Figures 1-13 The upper middle position of the detection plate 224 is provided with a positioning seat 222, the inside of the positioning seat 222 is provided with a first magnetic field generator 2222 and an eddy current receiver, the outside of the positioning seat 222 is provided with a positioning rod 2221, the inside of the detection groove 223 is slidably installed with a second magnetic field generator 2234, the inside of the second magnetic field generator 2234 is provided with an eddy current receiver, one end of the detection plate 224 close to the second magnetic field generator 2234 is provided with a sliding rod, the sliding rod is provided with a top plate 2241, one end of the top plate 2241 close to the positioning rod 2221 has magnetism, one end of the positioning rod 2221 close to the top plate 2241 is provided with a positioning plate, one end of the positioning plate close to the top plate 2241 has magnetism, the positioning plate and the top plate 2241 are attracted to each other, the side of the second magnetic field generator 2234 away from the top plate 2241 is provided with two groups of magnetic separation plates 2233, the side of the two groups of magnetic separation plates 2233 away from the second magnetic field generator 2234 is provided with a V-shaped plate 2231 and a first magnetic block 2232, one end of the V-shaped plate 2231 close to the magnetic separation plate 2233 is provided with a guide rod, one end of the second magnetic field generator 2234 close to the first magnetic block 2232 has magnetism, and the second magnetic field generator 2234 and the first magnetic block 2232 repel each other.

[0061] The electromagnetic core is usually stacked by several groups of thin silicon steel sheets, and the end of the electromagnetic core is protruded or recessed due to the unaligned stacking, and if the polishing is continued, the recessed area of the electromagnetic core after polishing will affect the performance of the electromagnetic, the positioning seat 222 is arranged at the middle position above the detection plate 224, before work, the electromagnetic core is placed on the detection plate 224, and it is guaranteed that the positioning seat 222 is located in the inside of the electromagnetic core, at this time, the first magnetic field generator 2222 can generate a group of alternating magnetic field to make the inside wall of the electromagnetic core generate induced eddy current, the eddy current receiver can judge the size of the electromagnetic core from the size of the induced eddy current, finally, the positioning seat 222 can be located at the center of the electromagnetic core through the positioning rod 2221, and then the subsequent polishing work is facilitated, the positioning rod 2221 can drive the top plate 2241 to move in the moving process, the second magnetic field generator 2234 can be moved below each end of the electromagnetic core through the top plate 2241, at this time, the second magnetic field generator 2234 can generate a group of alternating magnetic field to make the lower end of the electromagnetic core generate induced eddy current, and the size of the induced eddy current can judge whether the electromagnetic core is obviously recessed, so that the silicon steel sheet is prevented from being polished continuously due to unaligned stacking, and the performance of the subsequent electromagnetic is affected, after work, the detection plate 224 can be automatically lifted under the action of the spring, the V-shaped plate 2231 can become an I-shaped plate, the magnetic separation plate 2233 can be opened through the guide rod on the V-shaped plate 2231, and the second magnetic field generator 2234 can be reset through the first magnetic block 2232.

[0062] The working principle of the present application is: when the electromagnet core is placed on the detection plate 224, the positioning seat 222 is located at the center of the electromagnet core through the positioning seat 222 and the positioning rod 2221, the positioning rod 2221 drives the top plate 2241 to move in the moving process, the second magnetic field generator 2234 is moved below each end of the electromagnet core through the top plate 2241, whether the silicon steel sheet is stacked in place is judged through the second magnetic field generator 2234, and the polished electromagnet core is prevented from being scrapped due to depression in part, in the polishing process of the electromagnet core, the polishing disc 341 and the coil 3132 are driven to rotate through the second motor 33 and the transmission shaft 3141, the electromagnet core is polished through the polishing disc 341, when the power and current of the second motor 33 are constant, the wear degree of the polishing mechanism 34 can be judged through the change of the induced current generated on the coil 3132, the machining device 3 is controlled to descend through the lifting device 4, and the wear compensation effect is achieved, the pressure of the polishing mechanism 34 on the electromagnet core is ensured to return to the initial state, the phenomenon that the polishing surface of the electromagnet core is unevenly polished is prevented, the induced current generated by the coil 3132 can also make the refrigeration fin work, the temperature inside the transmission chamber 314 can be reduced through the refrigeration fin, so that the performance of the internal parts of the transmission chamber 314 is always in a stable state, the airflow inside the transmission chamber 314 and the airflow in the cooling cavity inside the polishing disc 341 can circulate through the second fan blade 3422 and the third fan blade 3423, so that the temperature of the polishing disc 341 is reduced, the heat generated by the friction between the polishing disc 341 and the electromagnet core is prevented, and the polishing effect of the electromagnet core is affected, when the first air suction groove 315 is blocked or needs to be cleaned, the gas in the waste tank 36 can enter the reversing chamber 317 through the third magnetic field generator 365, the second movable plate 364 and the air conveying pipe 37, at this time, the reversing plate 3171 moves to the direction of the second air suction groove 316, the reversing plate 3171 can block the first air suction groove 315 on one hand, and can make the baffle 3161 move to the direction of the first air suction groove 315 on the other hand, so as to achieve the purpose of opening the second air suction groove 316, the gas in the waste tank 36 can flow into the first air suction groove 315 from the communication groove 3172 after entering the reversing chamber 317, the gas in the waste tank 36 can clean the debris and polishing agent in the first air suction groove 315, at this time, the debris and polishing agent generated in the polishing process can continue to enter the waste tank 36 along the air suction cover 35, the second air suction groove 316 and the ventilation groove 311.

[0063] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0064] Finally, it should be noted that the above-mentioned only constitutes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will still be able to modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A polishing device for electromagnet processing with wear compensation function, characterized by: The electromagnet machining polishing device, which comprises a base (1), a fixing device (2), a machining device (3), a lifting device (4) and a support frame (5), the fixing device (2) and the support frame (5) are arranged above the base (1), the machining device (3) is arranged above the fixing device (2), the machining device (3) is movably connected with the support frame (5) through the lifting device (4), the fixing device (2) comprises a first workbench (21) and a second workbench (22), the first workbench (21) is slidably installed on the base (1), the second workbench (22) is slidably installed on the first workbench (21), a telescopic rod (221) is arranged on the second workbench (22), the second workbench (22) is used for fixing the electromagnet core through the telescopic rod (221), the machining device (3) comprises a polishing frame (31) and a polishing mechanism (34), a compensation mechanism (313) is arranged in the polishing frame (31), and the compensation mechanism (313) is connected with the lifting device (4) through wires. The compensation mechanism (313) comprises a permanent magnet (3131) and a coil (3132), the permanent magnet (3131) is arranged on the two sides of the coil (3132), the machining device (3) further comprises a second motor (33), a transmission chamber (314) is formed in the polishing frame (31), a transmission shaft (3141) is arranged in the transmission chamber (314), one end of the transmission shaft (3141) is connected with the coil (3132), the other end of the transmission shaft (3141) is connected with the polishing mechanism (34), a bevel gear is arranged on the transmission shaft (3141), and the transmission shaft (3141) is connected with the second motor (33) through the bevel gear. The polishing mechanism (34) comprises a polishing disc (341) and a fixing sleeve (342), the fixing sleeve (342) is arranged on the outside of the transmission shaft (3141), the polishing disc (341) is slidably connected with the fixing sleeve (342), the polishing disc (341) is in transmission connection with the transmission shaft (3141), a cooling cavity is formed in the polishing disc (341), a circulation cavity is formed in one end of the fixing sleeve (342) close to the polishing disc (341), a second fan blade (3422) and a third fan blade (3423) are arranged in the circulation cavity, one end of the circulation cavity is connected with the transmission chamber (314), the other end of the circulation cavity is connected with the cooling cavity formed in the polishing disc (341), the second fan blade (3422) and the third fan blade (3423) drive the gas to flow in opposite directions, and a refrigerating fin is arranged on the inner wall of the transmission chamber (314) and connected with the coil (3132).

2. The electromagnetic iron working polishing device with wear compensation function according to claim 1, characterized in that: The second fan blade (3422) and the third fan blade (3423) are arranged inside the circulating cavity through a fixing frame (3421), the fixing frame (3421) is provided with a transmission and a hollow gear, one end of the transmission shaft (3141) close to the circulating cavity is provided with a common gear, and the transmission shaft (3141) drives the second fan blade (3422) and the third fan blade (3423) to rotate through the common gear, the hollow gear and the transmission.

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