A large bearing inner or outer ring raceway ultrasonic impact modification apparatus and method

Abstract

The application relates to a large bearing inner ring or outer ring raceway ultrasonic impact modification device and method, and belongs to the technical field of metal surface treatment. The device comprises a driving supporting wheel device for supporting, positioning and rotating the inner ring or the outer ring; an ultrasonic impact platform for rolling clamping on the inner ring or the outer ring and performing ultrasonic impact on the raceway; and a control device for controlling the working of the driving supporting wheel device and the ultrasonic impact platform. The ultrasonic impact platform comprises a rack, a rolling clamping device and an ultrasonic impact device, the rolling clamping device and the ultrasonic impact device are both installed on the rack, the rolling clamping device can detachably roll clamp the inner and outer side surfaces of the inner ring or the outer ring, the rolling clamping device has a plurality of rollers for rolling contacting the inner side surface or the outer side surface of the inner ring or the outer ring, and the ultrasonic impact device performs ultrasonic impact on the raceway of the inner ring or the outer ring. The device has the advantages of small floor space, low cost, easy processing, easy maintenance, convenient movement, high efficiency and improved performance of the raceway.

Description

Technical Field

[0001] This invention belongs to the field of metal surface treatment technology, specifically relating to an ultrasonic impact modification device and method for the raceway of a large bearing inner or outer ring. Background Technology

[0002] Large rolling bearings (nominal outer diameter D: 200mm-430mm) rely on the contact between rollers and inner and outer raceways to transmit loads. In low-speed, heavy-load conditions, such as large wind turbines and tunnel boring machines, pitting and spalling frequently occur on the raceways. These minute impurities make the raceway surface rough. With continued operation, the pitting and corrosion pits on the raceways gradually expand, eventually causing bearing vibration and leading to bearing failure. Therefore, modifying the outer raceway of rolling bearings can effectively improve the service life of the bearing.

[0003] Ultrasonic impact strengthening is a surface treatment technology that utilizes high-power ultrasonic waves to induce plastic deformation and residual compressive stress on the material surface through high-frequency impact, thereby improving the material's performance and durability. Due to its high efficiency, high precision, and wide processing range, this technology has become one of the important means to improve the fatigue performance of metal components.

[0004] Currently, although some ultrasonic impact modification processes exist for bearing raceways, such as the ultrasonic deep rolling device for bearing raceway surface disclosed in Chinese invention patent application number 202111383301.3, this device is not suitable for large bearings, but only for machining small bearings. Because large bearings are large and difficult to machine, there is currently no universal method for modifying large bearings.

[0005] Modifying large bearings using traditional, general methods requires a large machine tool, which is typically very expensive, including the machine tool itself, related taxes, and shipping costs. Furthermore, due to its complexity, the maintenance and repair costs of large machine tools are also relatively high. Large machine tools have complex structures, occupy a large space, are difficult to maintain and repair, require highly skilled personnel and specialized tools, and have complex production management processes. All these factors result in low technical feasibility and economic viability for using large specialized machine tools to modify large bearings through ultrasonic impact. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide an ultrasonic impact modification device and method for the raceway of large bearing inner or outer rings, so as to solve or improve the defects existing in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a large bearing inner or outer ring raceway ultrasonic impact modification device, comprising: Drive roller device, used to support, position and rotate the inner or outer ring of large bearings; An ultrasonic impact platform is used to roll and clamp onto the inner or outer ring and subject the raceway of the inner or outer ring to ultrasonic impact. A control device is used to control the operation of the drive roller device and the ultrasonic impact platform; the control device is electrically connected to the drive roller device and the ultrasonic impact platform respectively. The ultrasonic impact platform includes a frame, a rolling clamping device, and an ultrasonic impact device. The rolling clamping device is mounted on the frame and can detachably roll and clamp the inner and outer surfaces of the inner or outer ring. The rolling clamping device has multiple rollers for rolling contact with the inner or outer surfaces of the inner or outer ring. The ultrasonic impact device is mounted on the frame and can perform ultrasonic impact on the raceway of the inner or outer ring.

[0008] Preferably, the drive roller device includes a driving roller device and a driven roller device, which are used to support the bottom left and right ends of the inner ring or outer ring, respectively. The driving roller device includes a first base, a driving roller, and a first motor. The driving roller is rotatably mounted on the first base, and the first motor is fixed on the first base. The output shaft of the first motor is connected to the rotating shaft of the driving roller, and the first motor is electrically connected to a control device. The driven roller device includes a second base and a driven roller, which is rotatably mounted on the first base. The outer ends of both the driving roller and the driven roller are provided with positioning retaining rings, which are used to limit the front-to-back position of the inner ring or outer ring.

[0009] Preferably, the drive roller device further includes an encoding device, which includes a support, an encoder, and a friction wheel. The support is fixed on a first base, the encoder is fixed on the support, and the friction wheel is fixed on the encoder shaft. The friction wheel is used to contact the outer surface of the inner or outer ring.

[0010] Preferably, the rolling clamping device includes two adjustable clamping assemblies symmetrically distributed front to back, both of which are mounted on a frame, and the front-to-back distance between the two adjustable clamping assemblies is adjustable. Each adjustable clamping assembly includes a bracket, an active clamping arm, a driven clamping arm, an active gear, a driven gear, and a second motor. The bracket is mounted on the frame, and the upper ends of both the active and driven clamping arms are rotatably mounted on the frame. The active gear is fixed at the rotatable upper end of the active clamping arm, and the driven gear is fixed at the rotatable upper end of the driven clamping arm. The active gear and the driven gear... The gears mesh, the second motor is fixed on the bracket, the second motor is electrically connected to the control device, the output end of the second motor is drivenly connected to the central shaft hole of the driving gear, the middle of the driving and driven gripping arms are equipped with upper rollers, the lower ends of the driving and driven gripping arms are equipped with lower rollers, the vertical distance between the upper and lower rollers is adjustable; at least two of the upper rollers or the lower rollers symmetrically distributed front and back are equipped with a third motor for driving their rotation, the third motor is fixed relative to the corresponding gripping arm, and the third motor is electrically connected to the control device.

[0011] Preferably, at least one of the two adjustable clamping assemblies is slidably mounted on a frame, and the frame is provided with a front-to-back distance adjustment mechanism for adjusting the distance between the two adjustable clamping assemblies. The front-to-back distance adjustment mechanism is a manual adjustment mechanism or an electrically controlled adjustment mechanism. The manual adjustment mechanism includes an adjustment slider, an adjustment guide rail, and an adjustment bolt. The adjustment slider is fixed on the adjustable clamping assembly, the adjustment guide rail is fixed on the frame, the adjustment bolt passes through the adjustment slider, and the adjustment bolt is threadedly connected to the adjustment slider. The end of the adjustment bolt is used to abut against the adjustment guide rail. The electrically controlled adjustment mechanism is a cylinder, hydraulic cylinder, electric cylinder, or linear module, and the electrically controlled adjustment mechanism is electrically connected to a control device.

[0012] Preferably, at least one of the upper roller and the lower roller is slidably mounted on the corresponding clamping arm. The active clamping arm and the driven clamping arm are provided with a vertical distance adjustment mechanism for adjusting the distance between the upper roller and the lower roller. The vertical distance adjustment mechanism includes an adjusting motor, an adjusting screw, and an adjusting nut seat. The adjusting motor is fixed on the corresponding clamping arm and is electrically connected to the control device. Both ends of the adjusting screw are rotatably mounted on the corresponding clamping arm. One end of the adjusting screw is drivenly connected to the output end of the adjusting motor. The adjusting nut seat cooperates with the adjusting screw, and at least one of the upper roller and the lower roller is rotatably mounted on the adjusting nut seat.

[0013] Preferably, the ultrasonic impact platform further includes a first tilt sensor and a second tilt sensor. The two first tilt sensors are respectively fixed on the active clamping arm and the driven clamping arm, and are used to measure the tilt of the corresponding clamping arm. The second tilt sensor is fixed on the top cover of the frame and is used to measure the levelness of the frame. The first tilt sensor and the second tilt sensor are electrically connected to the control device.

[0014] Preferably, the ultrasonic impact device includes a longitudinal translation drive mechanism, a vertical translation drive mechanism, a vertical rotation drive mechanism, and an ultrasonic impact mechanism. The longitudinal translation drive mechanism is used to drive the ultrasonic impact mechanism to move back and forth, and its fixed end is fixedly connected to the frame. The vertical translation drive mechanism is used to drive the ultrasonic impact mechanism to move up and down, and its fixed end is fixedly connected to the output end of the longitudinal translation drive mechanism. The vertical rotation drive mechanism is used to drive the ultrasonic impact mechanism to rotate vertically, and its fixed end is fixedly connected to the output end of the vertical translation drive mechanism. The ultrasonic impact mechanism is fixed on the output end of the vertical rotation drive mechanism.

[0015] Preferably, the ultrasonic impact mechanism includes an ultrasonic transducer, an ultrasonic amplitude transformer, and an ultrasonic impact head. The ultrasonic transducer is electrically connected to an ultrasonic generator. The lower end of the ultrasonic transducer is fixedly connected to the upper end of the ultrasonic amplitude transformer. The lower end of the ultrasonic amplitude transformer is detachably fixedly connected to the upper end of the ultrasonic impact head. The ultrasonic generator is electrically connected to a control device.

[0016] Preferably, the ultrasonic impact modification equipment for the inner or outer raceway of the large bearing further includes a cooling device and an oil receiving device. The cooling device is used to cool the raceway during ultrasonic impact. The cooling device includes a coolant tank, a coolant pump, a coolant pipe, and a coolant nozzle. The coolant pump is electrically connected to a control device. The inlet of the coolant pump is connected to the inner cavity of the coolant tank. The outlet of the coolant pump is connected to the inlet of the coolant pipe. The outlet of the coolant pipe is connected to the inlet of the coolant nozzle. The outlet of the coolant nozzle faces the position of the raceway to be ultrasonically impacted.

[0017] Preferably, the oil receiving device includes an oil receiving tray and a filter. The oil receiving tray is used to receive the coolant generated by ultrasonic impact cooling, and the filter is used to filter impurities in the coolant. The inlet of the filter is connected to the outlet of the oil receiving tray, and the outlet of the filter is connected to the inner cavity of the coolant tank.

[0018] Meanwhile, the present invention also provides a method for ultrasonic impact modification of the raceway of a large bearing inner or outer ring, using the ultrasonic impact modification equipment for the raceway of the large bearing inner or outer ring, including the following steps: S1. First, place the inner or outer ring of the large bearing to be modified by ultrasonic impact on the drive roller device, and then roll the rolling clamping device of the ultrasonic impact platform on the inner or outer ring. S2. Drive the inner or outer ring to rotate by driving the roller device, and make the linear velocity of the roller of the ultrasonic impact platform consistent with the linear velocity of the inner or outer ring, thereby keeping the position of the ultrasonic impact platform relative to the inner or outer ring unchanged. S3. The raceway of the inner or outer ring is subjected to ultrasonic impact using the ultrasonic impact device of the ultrasonic impact platform.

[0019] Compared with existing technologies, this invention has the following advantages: It supports, positions, and rotates the inner or outer ring of a large bearing by using a drive roller device; it then uses a rolling clamping device on an ultrasonic impact platform to hold the inner or outer ring in place; and finally, it uses an ultrasonic impact device on the ultrasonic impact platform to perform ultrasonic impact on the raceway of the inner or outer ring, thereby modifying the surface of the raceway material and improving its physicochemical properties. Compared to large machine tools, this equipment has a smaller footprint, lower cost, is easier to process, easier to maintain, more convenient to move and transport, and is more efficient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on the drawings described below without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a large bearing inner or outer ring raceway ultrasonic impact modification device according to an embodiment of the present invention.

[0022] Figure 2 This is a front view schematic diagram of the overall structure of a large bearing inner or outer ring raceway ultrasonic impact modification device according to an embodiment of the present invention.

[0023] Figure 3 This is a front view schematic diagram of the overall structure of a large bearing inner or outer ring raceway ultrasonic impact modification device according to another embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the active support roller device in one embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the driven roller device in one embodiment of the present invention.

[0026] Figure 6 This is a three-dimensional structural schematic diagram of an ultrasonic impact platform according to one embodiment of the present invention.

[0027] Figure 7 This is a front view schematic diagram of the structure of an ultrasonic impact platform in one embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of a rolling clamping device in one embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the adjustable clamping assembly in one embodiment of the present invention.

[0030] Figure 10 This is a schematic diagram of the ultrasonic impact device in one embodiment of the present invention.

[0031] Figure 11 This is a schematic diagram of the longitudinal translation drive mechanism in one embodiment of the present invention.

[0032] Figure 12 This is a schematic diagram of the vertical translation drive mechanism in one embodiment of the present invention.

[0033] Figure 13 This is a schematic diagram of the assembly structure of the cooling device and the oil receiving device in one embodiment of the present invention.

[0034] Figure label: 100. Drive roller assembly; 110. Active roller assembly; 111. First base; 112. Active roller; 113. First motor; 120. Driven roller assembly; 121. Second base; 122. Driven roller; 130. Positioning retaining ring; 140. Encoding device; 141. Support; 142. Encoder; 143. Friction wheel; 200. Ultrasonic impact platform; 210. Frame; 211. Body; 212. Top cover; 220. Rolling clamping device; 221. Adjustable clamping assembly; 2211. Support; 2212. Active clamping arm; 2213. Driven clamping arm; 2214. Driven gear; 2215. Driven gear; 2216. Second motor; 222. Roller; 2221. Upper roller; 2222. Lower roller; 223. Third motor; 230. Ultrasonic impact device; 231. Longitudinal translation drive mechanism; 2311. Fourth motor; 2312. Longitudinal lead screw; 2313. Longitudinal nut seat; 2314. Longitudinal slide; 2315. Longitudinal guide rail; 2316. Longitudinal slider; 232. Vertical translation drive mechanism; 2 321. Fifth motor; 2322. Vertical lead screw; 2323. Vertical nut seat; 2324. Vertical slide table; 2325. Vertical guide rail; 2326. Vertical slider; 233. Vertical rotation drive mechanism; 2331. Sixth motor; 2332. Housing; 2333. Turntable; 234. Ultrasonic impact mechanism; 2341. Ultrasonic transducer; 2342. Ultrasonic amplitude transformer; 2343. Ultrasonic impact head; 241. Adjusting slider; 242. Adjusting guide rail; 243. Adjusting bolt; 250. Vertical distance adjustment mechanism; 251. Adjusting motor; 252. Adjusting lead screw; 253. Adjusting nut seat; 261. First tilt sensor; 262. Second tilt sensor; 270. Ultrasonic generator; 300. Control device; 410. Cooling device; 411. Coolant tank; 412. Coolant pipe; 413. Coolant nozzle; 420. Oil receiving device; 421. Oil receiving tray; 510, Inner ring; 520, Outer ring; 530, Roller track. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. To make the above features and advantages of this invention more apparent and understandable, specific embodiments are provided below with reference to the accompanying drawings for detailed description.

[0036] like Figures 1 to 13 As shown, an embodiment of the present invention provides an ultrasonic impact modification device for the raceway of a large bearing inner or outer ring, comprising: Drive roller device 100, used to support, position and rotate the inner ring 510 or outer ring 520 of a large bearing; The ultrasonic impact platform 200 is used to roll and clamp on the inner ring 510 or the outer ring 520 and to perform ultrasonic impact on the raceway 530 of the inner ring 510 or the outer ring 520. A control device 300 is used to control the operation of the drive roller device 100 and the ultrasonic impact platform 200; the control device 300 is electrically connected to the drive roller device 100 and the ultrasonic impact platform 200 respectively. The ultrasonic impact platform 200 includes a frame 210, a rolling clamping device 220, and an ultrasonic impact device 230. The rolling clamping device 220 is mounted on the frame 210 and can detachably roll and clamp the inner and outer surfaces of the inner ring 510 or the outer ring 520. The rolling clamping device 220 has a plurality of rollers 222 for rolling contact with the inner or outer surfaces of the inner ring 510 or the outer ring 520. The ultrasonic impact device 230 is mounted on the frame 210 and can perform ultrasonic impact on the raceway 530 of the inner ring 510 or the outer ring 520.

[0037] In this embodiment, to stably support, position, and rotate the inner ring 510 or the outer ring 520, the drive roller device 100 includes an active roller device 110 and a driven roller device 120. The active roller device 110 and the driven roller device 120 are respectively used to support the left and right ends of the bottom of the inner ring 510 or the outer ring 520. The active roller device 110 includes a first base 111, an active roller 112, and a first motor 113. The active roller 112 is rotatably mounted on the first base 111, and the first motor 113... The first motor 113 is fixed on the first base 111. The output shaft of the first motor 113 is connected to the rotating shaft of the driving roller 112. The first motor 113 is electrically connected to the control device 300. The driven roller device 120 includes a second base 121 and a driven roller 122. The driven roller 122 is rotatably mounted on the first base 111. The outer ends of both the driving roller 112 and the driven roller 122 are provided with positioning retaining rings 130, which are used to limit the front-to-back position of the inner ring 510 or the outer ring 520. The first motor 113 is preferably, but not limited to, a stepper motor, a servo motor, etc. The rotating shaft of the first motor 113 can be connected to the rotating shaft of the driving roller 112 via a coupling. The first motor 113 drives the driving roller 112 to rotate, and the driving roller 112 drives the inner ring 510 or the outer ring 520 in contact with it to rotate.

[0038] In this embodiment, to more accurately measure the linear velocity of the inner ring 510 or the outer ring 520, the drive roller device 100 further includes an encoding device 140. The encoding device 140 includes a support 141, an encoder 142, and a friction wheel 143. The support 141 is fixed to the first base 111, the encoder 142 is fixed to the support 141, and the friction wheel 143 is fixed to the shaft of the encoder 142. The friction wheel 143 contacts the outer surface of the inner ring 510 or the outer ring 520, causing the friction wheel 143 to rotate, thereby enabling the encoder 142 to perform its measurement function. This embodiment uses an independent encoding device 140 to directly measure the rotational speed of the inner ring 510 or the outer ring 520, facilitating the adjustment of the linear velocity of the roller 222 of the rolling clamping device 220 according to the linear velocity of the inner ring 510 or the outer ring 520, ensuring that the two maintain consistent linear velocities.

[0039] In this embodiment, the rolling clamping device 220 includes two adjustable clamping components 221 symmetrically distributed front and rear. Both adjustable clamping components 221 are mounted on the frame 210, and the front-rear distance between the two adjustable clamping components 221 is adjustable. Each adjustable clamping component 221 includes a bracket 2211, an active clamping arm 2212, a driven clamping arm 2213, an active gear 2214, a driven gear 2215, and a second motor 2216. The bracket 2211 is mounted on the frame 210. The upper ends of the active clamping arm 2212 and the driven clamping arm 2213 are rotatably mounted on the frame 210. The active gear 2214 is fixed at the upper rotatable end of the active clamping arm 2212, and the driven gear 2215 is fixed at the upper rotatable end of the driven clamping arm 2213. The active gear 2214 meshes with the driven gear 2215. The second motor 2216 is fixed... The second motor 2216 is fixed on the bracket 2211 and electrically connected to the control device 300. The output end of the second motor 2216 is connected to the central shaft hole of the drive gear 2214. The middle part of the drive clamping arm 2212 and the driven clamping arm 2213 are each equipped with an upper roller 2221, and the lower end of the drive clamping arm 2212 and the driven clamping arm 2213 are each equipped with a lower roller 2222. The vertical distance between the upper roller 2221 and the lower roller 2222 is adjustable. At least two symmetrically distributed upper rollers 2221 or lower rollers 2222 are equipped with a third motor 223 for driving their rotation. For example, the upper rollers 2221 or lower rollers 2222 on any two corresponding clamping arms are equipped with a third motor 223. The third motor 223 is fixed relative to the corresponding clamping arm and is electrically connected to the control device 300. The second motor 2216 and the third motor 223 are preferably, but not limited to, servo motors. Both the second motor 2216 and the third motor 223 may be equipped with a reducer. The output shaft of the reducer is fixedly connected to the central shaft hole of the drive gear 2214. For ease of assembly, the frame 210 may include a frame 211 and a top cover 212. The top cover 212 is fixed to the top opening of the frame 211. The ultrasonic impact device 230 is installed inside the frame 211 and on the top cover 212.

[0040] In this embodiment, at least one of the two adjustable clamping components 221 is slidably mounted on the frame 210. For example, both adjustable clamping components 221 are slidably mounted on the frame 210 (e.g., via a guide rail slider assembly). In this case, the two adjustable clamping components 221 can be adjusted individually or synchronously to change their front-to-back positions. Of course, in some other embodiments, one adjustable clamping component 221 may be fixedly mounted on the frame 210, while the other adjustable clamping component 221 may be slidably mounted on the frame 210. In this case, by adjusting the front-to-back position of the other adjustable clamping component 221, the front-to-back distance between the two adjustable clamping components 221 can be changed. The frame 210 may be equipped with a front-to-back distance adjustment mechanism for adjusting the distance between the two adjustable clamping components 221. The front-to-back distance adjustment mechanism is a manual adjustment mechanism, which includes an adjustment slider 241, an adjustment guide rail 242, and an adjustment bolt 243. The adjustment slider 241 is fixed on the adjustable clamping component 221, the adjustment guide rail 242 is fixed on the top cover 212 of the frame 210, and the adjustment bolt 243 passes through the adjustment slider 241 and is threadedly connected to the adjustment slider 241. The end of the adjustment bolt 243 is used to abut against the adjustment guide rail 242. By abutting against the adjustment guide rail 242, the adjustment bolt 243 is locked and fixed to the adjustment guide rail 242. Loosening the adjustment bolt 243 can change the position of the adjustment slider 241, thereby changing the front-to-back distance between the two adjustable clamping components 221. Of course, in some other embodiments, in order to improve the adjustment efficiency, the front and rear distance adjustment mechanism can also be an electrically controlled adjustment mechanism, which is a cylinder, hydraulic cylinder, electric cylinder or linear module, etc. The linear module is a synchronous belt type linear module, a ball screw type linear module, a gear and rack type linear module or a linear motor type linear module, and the electrically controlled adjustment mechanism is electrically connected to the control device 300.

[0041] In this embodiment, at least one of the upper roller 2221 and the lower roller 2222 is slidably mounted on the corresponding clamping arm. For example, the upper roller 2221 is slidably mounted on the corresponding clamping arm, and the lower roller 2222 is rotatably fixedly mounted on the corresponding clamping arm. Of course, in some other embodiments, the upper roller 2221 may be rotatably fixedly mounted on the corresponding clamping arm, and the lower roller 2222 may be slidably mounted on the corresponding clamping arm; or, both the upper roller 2221 and the lower roller 2222 may be slidably mounted on the corresponding clamping arm. To improve adjustment efficiency, the active clamping arm 2212 and the driven clamping arm 2213 are equipped with a vertical distance adjustment mechanism 250 for adjusting the distance between the upper roller 2221 and the lower roller 2222. The vertical distance adjustment mechanism 250 includes an adjusting motor 251, an adjusting screw 252, and an adjusting nut seat 253. The adjusting motor 251 is fixed to the corresponding clamping arm and is electrically connected to the control device 300. The two ends of the adjusting screw 252 are rotatably mounted on the corresponding clamping arm. One end of the adjusting nut 250 is connected to the output end of the adjusting motor 251. The adjusting nut seat 253 cooperates with the adjusting screw 252. At least one of the upper roller 2221 and the lower roller 2222 is rotatably mounted on the adjusting nut seat 253. For example, the adjusting motor 251 drives the adjusting screw 252 to rotate, which in turn drives the adjusting nut seat 253 to move up and down. The adjusting nut seat 253 then drives the upper roller 2221 to move up and down, thereby changing the vertical distance between the upper roller 2221 and the lower roller 2222. Of course, in other embodiments, the vertical distance adjustment mechanism 250 can also be a cylinder, hydraulic cylinder, electric cylinder, or linear module, etc.

[0042] In this embodiment, the ultrasonic impact platform 200 further includes a first tilt sensor 261 and a second tilt sensor 262. The two first tilt sensors 261 are respectively fixed on the active clamping arm 2212 and the driven clamping arm 2213, and are used to measure the tilt of the corresponding clamping arms, so as to facilitate the control device 300 to adjust the tilt of the active clamping arm 2212 and the driven clamping arm 2213. The second tilt sensor 262 is fixed on the top cover 212 of the frame 210, and is used to measure the level of the frame 210, so as to facilitate the control device 300 to adjust the level of the frame 210. The first tilt sensor 261 and the second tilt sensor 262 are electrically connected to the control device 300. In this embodiment, the control device 300 is preferably, but not limited to, a PLC controller, and the specific model is not limited, such as a Siemens S7-200 series PLC.

[0043] In this embodiment, the ultrasonic impact device 230 includes a longitudinal translation drive mechanism 231, a vertical translation drive mechanism 232, a vertical rotation drive mechanism 233, and an ultrasonic impact mechanism 234. The longitudinal translation drive mechanism 231 is used to drive the ultrasonic impact mechanism 234 to move back and forth. The fixed end of the longitudinal translation drive mechanism 231 is fixedly connected to the frame 210. The vertical translation drive mechanism 232 is used to drive the ultrasonic impact mechanism 234 to move up and down. The fixed end of the vertical translation drive mechanism 232 is fixedly connected to the output end of the longitudinal translation drive mechanism 231. The vertical rotation drive mechanism 233 is used to drive the ultrasonic impact mechanism 234 to rotate vertically. The fixed end of the vertical rotation drive mechanism 233 is fixedly connected to the output end of the vertical translation drive mechanism 232. The ultrasonic impact mechanism 234 is fixed on the output end of the vertical rotation drive mechanism 233. The longitudinal translation drive mechanism 231, the vertical translation drive mechanism 232, the vertical rotation drive mechanism 233, and the ultrasonic impact mechanism 234 are all electrically connected to the control device 300.

[0044] The longitudinal translation drive mechanism 231 includes a fourth motor 2311, a longitudinal lead screw 2312, a longitudinal nut seat 2313, a longitudinal slide 2314, and a longitudinal guide mechanism. The fourth motor 2311 is fixed on the frame 210 and is electrically connected to the control device 300. The two ends of the longitudinal lead screw 2312 are rotatably mounted on the frame 210, and one end of the longitudinal lead screw 2312 is drivenly connected to the output end of the fourth motor 2311. The longitudinal nut seat 2313 cooperates with the longitudinal lead screw 2312. The longitudinal slide 2314 is fixedly connected to the longitudinal nut seat 2313. The longitudinal guide mechanism is disposed between the frame 210 and the longitudinal slide 2314. The fourth motor 2311 is preferably, but not limited to, a servo motor. The longitudinal lead screw 2312 and the longitudinal nut seat 2313 form a longitudinal ball screw nut mechanism. The longitudinal guide mechanism may include a longitudinal guide rail 2315 and a longitudinal slider 2316. The longitudinal guide rail 2315 is fixed on the frame 211 of the machine frame 210, and the longitudinal slider 2316 is fixed on the longitudinal slide table 2314. The longitudinal slider 2316 slides longitudinally with the longitudinal guide rail 2315. The longitudinal guide mechanism can be configured as two symmetrically distributed about the longitudinal ball screw nut mechanism. During operation, the fourth motor 2311 drives the longitudinal lead screw 2312 to rotate, which in turn drives the longitudinal nut seat 2313 to move longitudinally. The longitudinal nut seat 2313 drives the longitudinal slide table 2314 to move longitudinally relative to the machine frame 210, and the longitudinal slide table 2314 drives the vertical translation drive mechanism 232 to move longitudinally, thereby realizing the longitudinal movement of the ultrasonic impact mechanism 234.

[0045] The vertical translation drive mechanism 232 includes a fifth motor 2321, a vertical lead screw 2322, a vertical nut seat 2323, a vertical slide 2324, and a vertical guide mechanism. The fifth motor 2321 is fixed on the longitudinal slide 2314 and is electrically connected to the control device 300. Both ends of the vertical lead screw 2322 are rotatably mounted on the longitudinal slide 2314, and one end of the vertical lead screw 2322 is connected to the output end of the fifth motor 2321. The vertical nut seat 2323 cooperates with the vertical lead screw 2322, and the vertical slide 2324 is fixedly connected to the vertical nut seat 2323. The vertical guide mechanism is disposed between the longitudinal slide 2314 and the vertical slide 2324. The fifth motor 2321 is preferably, but not limited to, a servo motor. The vertical lead screw 2322 and the vertical nut seat 2323 form a vertical ball screw nut mechanism. The vertical guide mechanism may include a vertical guide rail 2325 and a vertical slider 2326. The vertical guide rail 2325 is fixed on the longitudinal slide table 2314, and the vertical slider 2326 is fixed on the vertical slide table 2324. The vertical slider 2326 slides vertically with the vertical guide rail 2325. The vertical guide mechanism may be configured as two symmetrically distributed about the vertical ball screw nut mechanism. During operation, the fifth motor 2321 drives the vertical lead screw 2322 to rotate, which in turn drives the vertical nut seat 2323 to move vertically. The vertical nut seat 2323 then drives the vertical slide 2324 to move vertically relative to the longitudinal slide 2314. The vertical slide 2324 then drives the vertical rotation drive mechanism 233 to move vertically, thereby realizing the vertical movement of the ultrasonic impact mechanism 234.

[0046] The vertical rotation drive mechanism 233 includes a sixth motor 2331, a housing 2332, a rotation transmission mechanism (not visible in the figure), and a turntable 2333. The sixth motor 2331 is fixed outside the housing 2332, the housing 2332 is fixed on a vertical slide 2324, the rotation transmission mechanism is installed inside the housing 2332, the input end of the rotation transmission mechanism is connected to the output end of the sixth motor 2331, the turntable 2333 is fixedly connected to the output end of the rotation transmission mechanism, and the ultrasonic impact mechanism 234 is fixed on the turntable 2333. The sixth motor 2331 is preferably, but not limited to, a servo motor, and the rotation transmission mechanism is preferably, but not limited to, a worm gear mechanism; however, bevel gear sets, rack and pinion mechanisms, etc., can also be used. During operation, the sixth motor 2331 drives the worm to rotate, which in turn drives the worm wheel to rotate, which in turn drives the turntable 2333 to rotate. This causes the ultrasonic impact mechanism 234 to swing back and forth in the vertical plane, thereby feeding along the section of the raceway 530. The axis of the ultrasonic impact mechanism 234 is always kept at the normal position of the impact point of the raceway 530, thus completing the ultrasonic impact modification of the raceway 530.

[0047] In this embodiment, the ultrasonic impact mechanism 234 includes an ultrasonic transducer 2341, an ultrasonic amplitude transformer 2342, and an ultrasonic impact head 2343. The ultrasonic transducer 2341 is electrically connected to the ultrasonic generator 270. The lower end of the ultrasonic transducer 2341 is fixedly connected to the upper end of the ultrasonic amplitude transformer 2342, and the lower end of the ultrasonic amplitude transformer 2342 is detachably fixedly connected to the upper end of the ultrasonic impact head 2343. The ultrasonic generator 270 is electrically connected to the control device 300. During operation, the controller controls the ultrasonic generator 270 to operate, causing the lower end of the ultrasonic impact head 2343 to perform ultrasonic impact processing on the surface of the raceway 530. The vibration frequency of the ultrasonic impact head 2343 is preferably, but not limited to, 20–40 kHz, such as 27 kHz or 35 kHz.

[0048] In this embodiment, the device may further include a cooling device 410 and an oil receiving device 420. The cooling device 410 is used for cooling during the ultrasonic impact process of the raceway 530. The cooling device 410 includes a coolant tank 411, a coolant pump (omitted in the figure), a coolant pipe 412, and a coolant nozzle 413. The coolant pump may be disposed in the coolant tank 411. The coolant pump is electrically connected to the control device 300. The inlet of the coolant pump is connected to the inner cavity of the coolant tank 411. The outlet of the coolant pump is connected to the inlet of the coolant pipe 412. The outlet of the coolant pipe 412 is connected to the inlet of the coolant nozzle 413. The outlet of the coolant nozzle 413 faces the position of the raceway 530 to be ultrasonically impacted.

[0049] In this embodiment, the oil receiving device 420 includes an oil receiving tray 421 and a filter (not shown in the figure). The oil receiving tray 421 is used to receive the coolant generated by ultrasonic impact cooling, and the filter is used to filter impurities in the coolant. The inlet of the filter is connected to the outlet of the oil receiving tray 421, and the outlet of the filter is connected to the inner cavity of the coolant tank 411. The filter keeps the coolant clean, recycles the coolant, saves resources, reduces costs, and reduces pollution. The impurities in the filter can be cleaned periodically, or the filter can be replaced periodically. The oil receiving tray 421 is located below the bottom of the inner ring 510 or the outer ring 520. Coolant flowing down or overflowing from the raceway 530 is collected by the oil receiving tray 421 below. The coolant tank 411 is located below the bottom of the oil receiving tray 421, resulting in a compact structural layout.

[0050] This embodiment also provides a method for ultrasonic impact modification of the raceway of the inner or outer ring of a large bearing, including the following steps: S1. First, place the inner ring 510 or outer ring 520 of the large bearing to be modified by ultrasonic impact on the drive roller device 100, and then roll the rolling clamping device 220 of the ultrasonic impact platform 200 onto the inner ring 510 or outer ring 520. S2. Drive the inner ring 510 or the outer ring 520 to rotate by the drive roller device 100, and make the linear velocity of the roller 222 of the ultrasonic impact platform 200 consistent with the linear velocity of the inner ring 510 or the outer ring 520, thereby keeping the position of the ultrasonic impact platform 200 relative to the inner ring 510 or the outer ring 52 unchanged. S3. The ultrasonic impact device 230 of the ultrasonic impact platform 200 performs ultrasonic impact on the raceway 530 of the inner ring 510 or the outer ring 520.

[0051] In this embodiment, in step S1, the large bearing inner ring 510 or outer ring 520 to be processed is lifted and placed on the active support roller 112 and the driven support roller 122; the ultrasonic impact platform 200 is lifted, and the adjusting slider 241 of at least one adjustable clamping assembly 221 is loosened by adjusting bolt 243, so that the front-to-back distance between the two adjustable clamping assemblies 221 is adapted to the width of the inner ring 510 or outer ring 520; the adjusting slider 241 is locked by adjusting bolt 243, so that the lower rollers 2222 of the four clamping arms are in contact with the inner ring 510 or outer ring 520; the adjusting sliders 241 on the four clamping arms are then locked by adjusting bolt 243, so that the lower rollers 2222 of the four clamping arms are in contact with the inner ring 510 or outer ring 520; the adjusting sliders 241 on the four clamping arms are then locked by adjusting bolt 243. The motor 251 converts the rotational motion into linear motion by adjusting the lead screw 252 and the adjusting nut seat 253, causing the four upper rollers 2221 to move downwards and clamp the inner ring 510 or outer ring 520 together with the lower rollers 2222. The second motor 2216, which controls the adjustable clamping assembly 221, drives the drive gear 2214 to rotate. The drive gear 2214 drives the driven gear 2215 to rotate. The drive gear 2214 and the driven gear 2215 drive the corresponding clamping arms to rotate, thereby adjusting the drive clamping arm 2212 and the driven clamping arm 2213 to a suitable position so that the inner ring 510 or outer ring 520 supports the ultrasonic impact platform 200. When machining the raceway 530 of the outer ring 520, the first tilt angle sensor 261 on the active clamping arm 2212 and the driven clamping arm 2213 feeds back the tilt angle signal of the corresponding clamping arm to the control device 300. The control device 300 adjusts the active clamping arm 2212 and the driven clamping arm 2213 so that their extension lines pass through the center of the outer ring 520, so that the outer ring 520 provides better support for the ultrasonic impact platform 200.

[0052] In this embodiment, in step S2, the first motor 113 is started, causing the active support roller 112 to start rotating. The active support roller 112 drives the inner ring 510 or the outer ring 520 to rotate (e.g., clockwise) through friction. The control device 300 adjusts the speed of the first motor 113 and the third motor 223 so that the linear velocity of the inner ring 510 or the outer ring 520 is consistent with the linear velocity of the roller 222, keeping the ultrasonic impact platform 200 in a horizontal state, so that the ultrasonic impact head 2343 of the ultrasonic impact device 230 is always perpendicular to the raceway 530. During operation, the encoder 142 feeds back the actual rotational speed of the inner ring 510 or the outer ring 520 to the control device 300, and the second tilt sensor 262 feeds back the level signal of the ultrasonic impact platform 200 to the control device 300. When the ultrasonic impact platform 200 tilts at a predetermined angle, the control device 300 readjusts the first motor 113 and the third motor 223 to keep the linear speed of the inner ring 510 or the outer ring 520 consistent with the linear speed of the roller 222, ensuring the stability of the equipment during operation and thus providing more efficient and precise processing performance.

[0053] In this embodiment, in step S3, the fourth motor 2311, the fifth motor 2321, and the sixth motor 2331 are activated. The fourth motor 2311 moves the ultrasonic impact head 2343 longitudinally to directly above the raceway 530. The fifth motor 2321 lowers the ultrasonic impact head 2343 to contact the raceway 530. The fourth motor 2311 feeds the ultrasonic impact head 2343 along the cross-section of the raceway 530. The sixth motor 2331 keeps the ultrasonic impact head 2343 perpendicular to the ultrasonic impact processing position of the raceway 530, thereby completing the ultrasonic impact modification of the raceway 530. During the processing, the coolant pipe 412 is adjusted so that the coolant nozzle 413 is aligned with the ultrasonic impact processing position of the raceway 530.

[0054] For the entire machining process of large angular contact ball bearings, deep groove ball bearings, flanged outer ring 520 miniature radial ball bearings and tapered roller bearings, the ultrasonic impact device 230 is rotated to a certain angle to complete one revolution, and then rotated to a certain angle to continue machining until the final completion.

[0055] For the entire machining process of the inner ring 510 raceway 530 of large double-row angular contact ball bearings, self-aligning ball bearings, and self-aligning roller bearings, the ultrasonic impact device 230 is moved longitudinally to the first row, then rotated to a certain angle, and after completing one revolution, it is rotated to a certain angle again to continue machining until the first row is completed; then it is moved longitudinally to the second row of raceways 530, and the process is the same as machining the first row; while for the outer ring 520 raceway 530, the ultrasonic impact device 230 is rotated to a certain angle, and after completing one revolution, it is rotated to a certain angle again to continue machining until the final completion.

[0056] For the entire machining process of the inner and outer rings 520 and raceways 530 of large cylindrical roller bearings and light and medium series needle roller bearings, the ultrasonic impact device 230 is moved longitudinally to the edge for machining one revolution, and then moved longitudinally a certain distance to continue machining until the final completion.

[0057] For the entire machining process of the inner ring 510 raceway 530 of the large double-row cylindrical roller bearing (NN type), the ultrasonic impact device 230 is moved longitudinally to the edge of the first raceway 530 and machined once, then moved longitudinally a certain distance to continue machining until the final completion; then it is moved longitudinally to the second raceway 530, and the process is the same as machining the first raceway; while for the outer ring 520 raceway 530, the ultrasonic impact device 230 is moved longitudinally to the edge and machined once, then moved longitudinally a certain distance to continue machining until the final completion.

[0058] For the entire machining process of the outer ring 520 raceway 530 of the large double-row cylindrical roller bearing (NNU type), the ultrasonic impact device 230 is moved longitudinally to the edge of the first raceway 530 and machined once, then moved longitudinally a certain distance to continue machining until the final completion; then it is moved longitudinally to the second raceway 530, and the process is the same as machining the first raceway; while for the inner ring 510 raceway 530, the ultrasonic impact device 230 is moved longitudinally to the edge and machined once, then moved longitudinally a certain distance to continue machining until the final completion.

[0059] In this embodiment, the ultrasonic impact head 2343 is used to vibrate and impact the raceway 530 of the inner ring 510 or outer ring 520 of the large bearing, which has the following effects: (1) By forming plastic deformation on the surface of the raceway 530 material, the proliferation and rearrangement of dislocations are promoted, a large number of dislocation entanglements and dislocation walls are formed, and finally fine nanocrystals are formed, thereby effectively refining the material structure; (2) Ultrasonic impact treatment can improve the surface hardness, wear resistance and fatigue performance of the material; (3) Ultrasonic impact treatment can introduce beneficial compressive stress, thereby improving the residual stress state of the material, improving the fatigue life and structural integrity of the material; (4) Ultrasonic impact treatment can reduce the absorption of corrosive media on the surface of the material, thereby effectively improving the corrosion resistance of the material; Ultrasonic impact treatment is fast and can more easily obtain a uniform and smooth treated surface.

[0060] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "multiple" means two or more, unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for ultrasonic impact modification of the raceway of a large bearing inner or outer ring, characterized in that, include: Drive roller device, used to support, position and rotate the inner or outer ring of large bearings; An ultrasonic impact platform is used to roll and clamp onto the inner or outer ring and subject the raceway of the inner or outer ring to ultrasonic impact. A control device is used to control the operation of the drive roller device and the ultrasonic impact platform; the control device is electrically connected to the drive roller device and the ultrasonic impact platform respectively. The ultrasonic impact platform includes a frame, a rolling clamping device, and an ultrasonic impact device. The rolling clamping device is mounted on the frame and can detachably roll and clamp the inner and outer surfaces of the inner or outer ring. The rolling clamping device has multiple rollers for rolling contact with the inner or outer surfaces of the inner or outer ring. The ultrasonic impact device is mounted on the frame and can perform ultrasonic impact on the raceway of the inner or outer ring.

2. The ultrasonic impact modification equipment for the inner or outer raceway of a large bearing according to claim 1, characterized in that, The drive roller device includes a driving roller device and a driven roller device, which are used to support the bottom left and right ends of the inner ring or outer ring, respectively. The driving roller device includes a first base, a driving roller, and a first motor. The driving roller is rotatably mounted on the first base, and the first motor is fixed on the first base. The output shaft of the first motor is connected to the rotating shaft of the driving roller, and the first motor is electrically connected to a control device. The driven roller device includes a second base and a driven roller, which is rotatably mounted on the first base. The outer ends of both the driving roller and the driven roller are provided with positioning retaining rings, which are used to limit the front-to-back position of the inner ring or outer ring.

3. The ultrasonic impact modification equipment for the inner or outer raceway of a large bearing according to claim 2, characterized in that, The drive roller device also includes an encoding device, which includes a support, an encoder, and a friction wheel. The support is fixed on a first base, the encoder is fixed on the support, and the friction wheel is fixed on the encoder shaft. The friction wheel is used to contact the outer surface of the inner or outer ring.

4. The ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring according to claim 1, characterized in that, The rolling clamping device includes two adjustable clamping assemblies symmetrically distributed front and rear. Both adjustable clamping assemblies are mounted on a frame, and the front-rear distance between the two adjustable clamping assemblies is adjustable. Each adjustable clamping assembly includes a bracket, a driving clamping arm, a driven clamping arm, a driving gear, a driven gear, and a second motor. The bracket is mounted on the frame, and the upper ends of both the driving and driven clamping arms are rotatably mounted on the frame. The driving gear is fixed at the upper rotating part of the driving clamping arm, and the driven gear is fixed at the upper rotating part of the driven clamping arm. The driving gear meshes with the driven gear. The second motor is fixed on the bracket and electrically connected to the control device. The output end of the second motor is connected to the central shaft hole of the drive gear. Upper rollers are installed in the middle of both the drive and driven clamping arms, and lower rollers are installed at the lower ends of both the drive and driven clamping arms. The vertical distance between the upper and lower rollers is adjustable. At least two symmetrically distributed upper or lower rollers are equipped with a third motor for driving their rotation. The third motor is fixed relative to the corresponding clamping arm and electrically connected to the control device.

5. The ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring according to claim 4, characterized in that, At least one of the two adjustable clamping assemblies is slidably mounted on a frame. The frame is provided with a front-to-back distance adjustment mechanism for adjusting the distance between the two adjustable clamping assemblies. The front-to-back distance adjustment mechanism is a manual adjustment mechanism or an electrically controlled adjustment mechanism. The manual adjustment mechanism includes an adjustment slider, an adjustment guide rail, and an adjustment bolt. The adjustment slider is fixed on the adjustable clamping assembly, the adjustment guide rail is fixed on the frame, and the adjustment bolt passes through the adjustment slider and is threadedly connected to the adjustment slider. The end of the adjustment bolt is used to abut against the adjustment guide rail. The electrically controlled adjustment mechanism is a cylinder, hydraulic cylinder, electric cylinder, or linear module, and is electrically connected to a control device. At least one of the upper roller and the lower roller is slidably mounted on the corresponding clamping arm. The vertical distance adjustment mechanism includes an adjusting motor, an adjusting screw, and an adjusting nut seat. The adjusting motor is fixed on the corresponding clamping arm and is electrically connected to the control device. Both ends of the adjusting screw are rotatably mounted on the corresponding clamping arm. One end of the adjusting screw is drively connected to the output end of the adjusting motor. The adjusting nut seat cooperates with the adjusting screw. At least one of the upper roller and the lower roller is rotatably mounted on the adjusting nut seat.

6. The ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring according to claim 4, characterized in that, The ultrasonic impact platform also includes a first tilt sensor and a second tilt sensor. The two first tilt sensors are respectively fixed on the active clamping arm and the driven clamping arm, and are used to measure the tilt of the corresponding clamping arm. The second tilt sensor is fixed on the top cover of the frame and is used to measure the levelness of the frame. The first tilt sensor and the second tilt sensor are electrically connected to the control device.

7. The ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring according to claim 1, characterized in that, The ultrasonic impact device includes a longitudinal translation drive mechanism, a vertical translation drive mechanism, a vertical rotation drive mechanism, and an ultrasonic impact mechanism. The longitudinal translation drive mechanism drives the ultrasonic impact mechanism to move back and forth, and its fixed end is fixedly connected to the frame. The vertical translation drive mechanism drives the ultrasonic impact mechanism to move up and down, and its fixed end is fixedly connected to the output end of the longitudinal translation drive mechanism. The vertical rotation drive mechanism drives the ultrasonic impact mechanism to rotate vertically, and its fixed end is fixedly connected to the output end of the vertical translation drive mechanism. The ultrasonic impact mechanism is fixed on the output end of the vertical rotation drive mechanism.

8. The ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring according to claim 7, characterized in that, The ultrasonic impact mechanism includes an ultrasonic transducer, an ultrasonic amplitude transformer, and an ultrasonic impact head. The ultrasonic transducer is electrically connected to an ultrasonic generator. The lower end of the ultrasonic transducer is fixedly connected to the upper end of the ultrasonic amplitude transformer. The lower end of the ultrasonic amplitude transformer is detachably fixedly connected to the upper end of the ultrasonic impact head. The ultrasonic generator is electrically connected to a control device.

9. The ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring according to claim 1, characterized in that, The ultrasonic impact modification equipment for the inner or outer raceway of a large bearing also includes a cooling device and an oil receiving device. The cooling device is used to cool the raceway during ultrasonic impact. The cooling device includes a coolant tank, a coolant pump, a coolant pipe, and a coolant nozzle. The coolant pump is electrically connected to a control device. The inlet of the coolant pump is connected to the inner cavity of the coolant tank. The outlet of the coolant pump is connected to the inlet of the coolant pipe. The outlet of the coolant pipe is connected to the inlet of the coolant nozzle. The outlet of the coolant nozzle faces the position of the raceway to be ultrasonically impacted. The oil receiving device includes an oil receiving tray and a filter. The oil receiving tray is used to receive the coolant generated by ultrasonic impact cooling, and the filter is used to filter impurities in the coolant. The inlet of the filter is connected to the outlet of the oil receiving tray, and the outlet of the filter is connected to the inner cavity of the coolant tank.

10. A method for ultrasonic impact modification of the raceway of a large bearing inner or outer ring, using the ultrasonic impact modification equipment for the raceway of a large bearing inner or outer ring as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. First, place the inner or outer ring of the large bearing to be modified by ultrasonic impact on the drive roller device, and then roll the rolling clamping device of the ultrasonic impact platform on the inner or outer ring. S2. Drive the inner or outer ring to rotate by driving the roller device, and make the linear velocity of the roller of the ultrasonic impact platform consistent with the linear velocity of the inner or outer ring, thereby keeping the position of the ultrasonic impact platform relative to the inner or outer ring unchanged. S3. The raceway of the inner or outer ring is subjected to ultrasonic impact using the ultrasonic impact device of the ultrasonic impact platform.

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