A method and device for detecting the temperature of a tooth surface during a gear micro-particle shot peening process

Abstract

This application discloses a method for detecting the tooth surface temperature during gear microparticle shot peening, relating to the field of gear processing technology, including the following steps: Step S1: Controlling the gear to rotate and performing microparticle shot peening on the tooth surface of the gear; Step S2: After the processed tooth surface rotates outside the shot peening area, measuring the current temperature of the tooth surface to obtain a measured temperature value; Step S3: Calculating the temperature of the tooth surface during shot peening based on the measured temperature value to obtain an actual temperature value; Step S4: Adjusting the processing parameters of the shot peening treatment based on the actual temperature value. This application enables the detection of tooth surface temperature during gear shot peening strengthening.

Description

Technical Field

[0001] This application relates to the field of gear processing technology, and in particular to a method and apparatus for detecting the temperature of gear tooth surface during gear microparticle shot peening. Background Technology

[0002] Microparticle peening is an important process for improving the surface hardness and fatigue life of gears. However, during shot peening, the heat generated by the impact and friction of high-speed particles can cause the gear surface temperature to rise. If the temperature exceeds the material's allowable limit, it may lead to uneven hardening of the gear surface, microcracks, or deformation, affecting the gear's service life. In existing technologies, traditional shot peening processes are considered cold working processes because the velocity of particles impacting the gear surface is low. However, the velocity of the projectiles in microparticle peening is 2-3 times that of traditional shot peening. The particles impacting the gear at extremely high speeds can cause thermal softening of the gear surface, affecting the residual stress, surface microstructure, and microstructure distribution characteristics. Ignoring temperature changes during microparticle peening may result in gears failing to meet the expected strengthening targets, thus affecting their service life. The area most affected by temperature during gear microparticle peening is the shallow surface layer, typically not exceeding 0.1 mm. Furthermore, the temperature change of the gear surface during microparticle peening has transient characteristics, and traditional thermocouple temperature measurement methods cannot detect the surface temperature of the gear during shot peening. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a method and apparatus for detecting the tooth surface temperature during gear microparticle shot peening, which can realize the detection of tooth surface temperature during gear shot peening strengthening process.

[0004] A method for detecting the gear surface temperature during gear microparticle shot peening according to an embodiment of the first aspect of this application includes the following steps: Step S1: Control the gear to rotate and perform microparticle shot peening on the tooth surface of the gear; Step S2: After the tooth surface to be machined is rotated outside the shot peening area, the current temperature of the tooth surface is measured to obtain the measured temperature value. ; Step S3: Based on the measured temperature value Calculate the temperature of the tooth surface during shot peening to obtain the actual temperature value. ; Step S4: Based on the actual temperature value Adjust the processing parameters for shot peening.

[0005] According to an embodiment of this application, a method for detecting the tooth surface temperature during the shot peening process of gear microparticles has at least the following beneficial effects: by compensating the measured temperature through an algorithm, the true instantaneous temperature of the tooth surface in the shot peening area can be deduced, which fundamentally solves the problem of low or delayed measurement values ​​caused by the inability of the sensor to be directly installed in the shot peening area with strong impact.

[0006] According to some embodiments of this application, in step S3, the actual temperature value The calculation formula is: , in, The ambient reference temperature The time delay between moving from the shot peening area to the temperature detection area. This is the thermal decay time constant.

[0007] According to some embodiments of this application, step S4 specifically includes the following steps: based on the actual temperature value The effective temperature value T is obtained, and the effective temperature value T is compared with the preset temperature range to adjust the processing parameters of shot peening.

[0008] According to some embodiments of this application, based on the actual temperature value To obtain the effective temperature value T, the actual temperature value is processed using one or more of the following methods: sliding window filtering, adjacent tooth period comparison, median filtering, threshold judgment, and interpolation correction. .

[0009] According to some embodiments of this application, comparing the effective temperature value T with a preset temperature range specifically includes the following steps: When the effective temperature value T is less than or equal to the first temperature threshold T1 in the preset temperature range, the current shot peening processing parameters are maintained. When the effective temperature value T is greater than the first temperature threshold T1 in the preset temperature range, and the effective temperature value T is less than or equal to the second temperature threshold T2 in the preset temperature range, the shot peening pressure and / or the shot peening medium flow rate are reduced. When the effective temperature value T is greater than the second temperature threshold T2 in the preset temperature range and the effective temperature value T is less than or equal to the third temperature threshold T3 in the preset temperature range, the continuous shot peening is switched to intermittent shot peening, and the gear speed is reduced or the nozzle movement speed is adjusted. Shot peening is stopped when the effective temperature value T is greater than the third temperature threshold T3 in the preset temperature range.

[0010] According to some embodiments of this application, the method further includes the following after step S4: Step S5: After adjusting the processing parameters of shot peening, if the effective temperature value T of a certain tooth surface on the gear exceeds the preset temperature range three times in a row, then the zone control strategy is executed.

[0011] According to some embodiments of this application, the zone control strategy includes one or more of the following: reducing the shot peening duration of the corresponding tooth surface, increasing the intermittent cooling time, reducing the nozzle movement speed corresponding to the tooth surface, skipping the next shot peening treatment of the tooth surface, and performing compensatory shot peening after the temperature recovers to the preset temperature range.

[0012] According to some embodiments of this application, the method further includes the following after step S5: Step S6: Perform quality analysis on the gear based on the effective temperature value T of different regions on the gear.

[0013] According to some embodiments of this application, the processing parameters of the shot peening treatment include one or more of the following: shot peening pressure, shot peening medium flow rate, gear speed, nozzle moving speed, distance between nozzle and tooth surface, duration of a single shot peening, shot peening interval time, and cooling airflow parameters.

[0014] This application also provides a gear tooth surface temperature detection device during gear microparticle shot peening, used to implement a gear tooth surface temperature detection method during gear microparticle shot peening, including: A mounting mechanism is used to mount the gear and drive the gear to rotate; A microparticle shot peening device is disposed on the periphery of the mounting mechanism for shot peening the gears; A temperature detection device is disposed on the periphery of the mounting mechanism and is staggered from the microparticle shot peening device, for detecting the temperature of the gear tooth surface; An angle detection device is provided for detecting the rotation angle of the gear. Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. Attached Figure Description

[0015] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application; Figure 2 This is a schematic diagram of the arrangement of a temperature detection device in the gear tooth surface region according to an embodiment of this application.

[0016] Icon labels: Gear 100, mounting mechanism 110, rotary drive mechanism 120; 200 microparticle shot peening device; Temperature detection device 300; Angle detection device 400; 500 protective purge nozzle. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0019] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0020] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0021] Reference Figures 1 to 2 As shown in the figure, a method for detecting the gear surface temperature during gear microparticle shot peening according to an embodiment of this application includes the following steps: Step S1: Control the gear 100 to rotate and perform microparticle shot peening on the tooth surface of the gear 100. The gear 100 to be processed is rotatably mounted onto the mounting mechanism 110. The rotary drive mechanism 120 drives the gear 100 to rotate. The microparticle shot peening device 200 is used to perform shot peening on the tooth surface of the gear 100. The specific structure of the microparticle shot peening device 200 is existing technology and will not be described in detail. The processing parameters of the microparticle shot peening device 200 can be adjusted, including but not limited to shot peening pressure, shot peening medium flow rate, gear 100 rotation speed, nozzle moving speed, distance between nozzle and tooth surface, single shot peening duration, shot peening interval time, and cooling airflow parameters. Step S2: The microparticle shot peening device 200 forms a shot peening area on the tooth surface, and the temperature detection device 300 forms a temperature detection area on the tooth surface. The shot peening area and the temperature detection area are spaced apart along the rotation direction of the gear 100. The tooth surface on the gear 100 first passes through the shot peening area and then through the temperature detection area. After the processed tooth surface rotates outside the shot peening area, the current temperature of the tooth surface is measured to obtain the measured temperature value. That is, the temperature detection device 300 collects the temperature of the temperature detection area to obtain the measured temperature value. The angle detection device 400 collects the angular position signal of the gear 100; Step S3: Based on the measured temperature value Calculate the temperature of the tooth surface during shot peening to obtain the actual temperature value. The temperature of the i-th tooth on gear 100 when it passes through the temperature detection area is The temperature of the i-th tooth on gear 100 when it passes through the shot peening zone is As the tooth surface moves from the shot peening area to the temperature detection area, heat is conducted to the gear 100 base and dissipated into the air. Therefore, an algorithm compensates for the measured temperature, allowing for the deduction of the true instantaneous temperature of the tooth surface in the shot peening area. This fundamentally solves the problem of low or delayed measurements caused by the inability to directly install sensors in the high-impact shot peening area. The temperature detection device 300 avoids the area directly impacted by shot particles, preventing impact, wear, and contamination of the sensor lens or probe by the shot peening. This extends the service life of the temperature detection device 300. Step S4: Based on the actual temperature value Adjusting the processing parameters of shot peening keeps the tooth surface temperature within a preset range, effectively preventing changes in the microstructure of the tooth surface or thermal softening of the gear 100 surface caused by excessive temperature, thereby ensuring that the reinforcement layer depth and residual compressive stress distribution of each tooth on the gear 100 are uniform.

[0022] Reference Figures 1 to 2 As shown, in some embodiments, in step S3, the actual temperature value The calculation formula is: , in, The ambient reference temperature The time delay between moving from the shot peening area to the temperature detection area. This is the thermal decay time constant.

[0023] The calculation formula is: , The circumferential angle between the shot peening area and the temperature detection area. The unit is rad. Let be the angular velocity of gear 100. This is the thermal decay time constant, which can be obtained through calibration experiments at a known actual temperature value. Under different conditions, the time delay from the shot peening area to the temperature detection area was measured. Measured temperature value Using actual temperature values The calculation formula is fitted to determine the thermal decay time constant. The temperature decay of heat in a solid is approximately represented as a first-order exponential decay process. The formula uses an exponential function for inverse derivation, which can more accurately reproduce the instantaneous peak temperature of the shot-peened area compared to linear proportional compensation. When the gear speed increases from 100 rpm, the movement time of the tooth surface from the shot-peened area to the inspection area is shortened, and the thermal decay is reduced. As the speed decreases, the compensation range also decreases; when the engine speed decreases, the cooling time increases. As the speed increases, the compensation range also increases accordingly. This allows it to adapt to operating conditions where the gear speed is frequently adjusted by 100 RPM. Thermal decay time constant. The formula requires prior measurement of a specific batch of gears (100). It involves only addition, subtraction, multiplication, division, and one natural exponentiation operation, resulting in low computational complexity. It can be solved using a standard programmable logic controller (PLC).

[0024] Reference Figures 1 to 2 As shown, in some embodiments, step S4 specifically includes the following steps: based on the actual temperature value The effective temperature value T is obtained, and then compared with the preset temperature range to adjust the processing parameters for shot peening. The actual temperature value... Anomaly data processing is performed to obtain the effective temperature value T. This effective temperature value T is then compared with a preset temperature threshold, and the shot peening processing parameters are adjusted accordingly. The shot peening process is subject to interference from factors such as particle splashing, dust obstruction, metal surface reflection, mechanical vibration, and changes in ambient light, which affect the actual temperature value. Noise may still be present, and there may be momentary spikes, drops, data loss, or inaccurate temperature fluctuations. Through anomaly data processing, we ensure that the effective temperature value T truly represents the continuous steady-state heating of the tooth surface, preventing frequent fluctuations in processing parameters caused by momentary interference and ensuring stable equipment operation.

[0025] Reference Figures 1 to 2 As shown, in some implementations, based on the actual temperature value To obtain the effective temperature value T, the actual temperature value is processed using one or more of the following methods: sliding window filtering, adjacent tooth period comparison, median filtering, threshold judgment, and interpolation correction. By combining sliding filtering, periodic comparison, median filtering, threshold judgment, and interpolation correction, hierarchical processing of noise sources is achieved, specifically removing interference from different frequency bands. In one specific implementation, abnormal data processing uses the average or median temperature within a preset time window as a reference value. When the difference between a temperature sampling point and the reference value exceeds a preset abnormal threshold, and the duration of that sampling point is less than a preset time length, the sampling point is determined to be an abnormal temperature point and is either removed or replaced by interpolation from adjacent sampling points. In another specific implementation, the temperature data of the same or adjacent tooth numbers in the previous rotation cycle is used as a reference to periodically compare the temperature data of the current cycle. When the current data deviates from the historical cycle data by more than a preset proportion, it is treated as suspected abnormal data and corrected. Using interpolation correction ensures that the temperature sequence is continuous and equally spaced on the time axis, effectively preventing control lag or actuator stuttering caused by missing data.

[0026] Reference Figures 1 to 2 As shown, in some embodiments, the effective temperature value T is compared with a preset temperature range, specifically including the following steps: When the effective temperature value T is less than or equal to the first temperature threshold T1 in the preset temperature range, the current shot peening processing parameters are maintained. When the effective temperature value T is greater than the first temperature threshold T1 in the preset temperature range, and the effective temperature value T is less than or equal to the second temperature threshold T2 in the preset temperature range, reduce the shot peening pressure and / or reduce the shot peening medium flow rate. When the effective temperature value T is greater than the second temperature threshold T2 in the preset temperature range and the effective temperature value T is less than or equal to the third temperature threshold T3 in the preset temperature range, the continuous shot peening will be switched to intermittent shot peening, and the gear speed will be reduced by 100 or the nozzle movement speed will be adjusted. When the effective temperature value T is greater than the third temperature threshold T3 in the preset temperature range, shot peening is stopped, and an audible and visual alarm is issued. In some other embodiments, after shot peening is stopped, a cooling airflow is activated to actively cool the gear 100.

[0027] Reducing shot peening pressure and / or shot peening medium flow rate directly reduces the impact heat source. Switching from continuous shot peening to intermittent shot peening, and reducing gear speed or adjusting nozzle movement speed, increases passive heat dissipation time by introducing intervals and alters the heat flux density distribution on the tooth surface by adjusting motion parameters. By setting three incremental temperature thresholds, this multi-stage progressive structure avoids the simple control of single-threshold trigger shutdown, enabling the system to take mild adjustment measures for slight overheating, switch operating modes for moderate overheating, and only execute emergency shutdown for extreme overheating. This maximizes processing continuity and improves production efficiency while ensuring tooth surface quality. The first temperature threshold T1, the second temperature threshold T2, and the third temperature threshold T3 should be determined based on the heat deformation temperature of the gear 100 material and process requirements.

[0028] Reference Figures 1 to 2 As shown, in some embodiments, the method further includes the following after step S4: Step S5: After adjusting the shot peening processing parameters, if the effective temperature value T of a certain tooth surface on gear 100 exceeds the second temperature threshold T2 in the preset temperature range three times consecutively, the zone control strategy is executed. It is foreseeable that the larger the number of times the temperature exceeds the second temperature threshold T2 consecutively, the less interference and the more stable the processing parameters. However, an excessively large value will lead to untimely adjustments. Therefore, setting it to three or four times is more reasonable. When a certain tooth surface area on gear 100 experiences over-temperature three times consecutively, over-temperature means that the measurement result of the temperature detection device 300 exceeds the second temperature threshold T2. The zone control strategy is executed to control the temperature of that tooth surface area. A single over-temperature event may originate from occasional factors such as microparticle bounce obstruction, electromagnetic interference, or instantaneous sensor noise. The zone control strategy is only executed when over-temperature occurs multiple times consecutively, reducing ineffective adjustments caused by false signals.

[0029] Reference Figures 1 to 2 As shown, in some embodiments, the zone control strategy includes one or more of the following: reducing the shot peening duration of the corresponding tooth surface, increasing the intermittent cooling time, reducing the nozzle movement speed corresponding to the tooth surface, skipping the next shot peening treatment of the tooth surface, and performing compensatory shot peening after the temperature recovers to a preset temperature range. Adjusting the temperature from three aspects—heat source intensity, heat dissipation time, and action path—provides multiple options for process regulation.

[0030] Reference Figures 1 to 2 As shown, in some embodiments, the method further includes the following after step S5: Step S6: Perform quality analysis on gear 100 based on the effective temperature values ​​T of different areas on gear 100. After the angle detection device 400 collects the rotation angle position signal of gear 100, it can assign each temperature data to a specific tooth and a specific phase on the tooth surface. When the temperature data of a certain tooth surface continuously deviates from the normal range, it can be used to locate and analyze possible material problems, previous processing defects, or uneven heat treatment. It can also provide reliable data for the adjacent tooth position periodic comparison method used in the abnormal data processing step.

[0031] Reference Figures 1 to 2 As shown, in some embodiments, the processing parameters for shot peening include one or more of the following: shot peening pressure, shot peening medium flow rate, gear speed, nozzle moving speed, distance between nozzle and tooth surface, duration of a single shot peening, shot peening interval time, and cooling airflow parameters.

[0032] This application also provides a gear tooth surface temperature detection device during gear microparticle shot peening, used to implement a method for detecting gear tooth surface temperature during gear microparticle shot peening, including: a gear 100, a mounting mechanism 110, a rotary drive mechanism 120, a microparticle shot peening device 200, a temperature detection device 300, an angle detection device 400, and a protective blow-off nozzle 500. Mounting mechanism 110 is used to mount gear 100 and drive gear 100 to rotate; A microparticle shot peening device 200 is disposed on the periphery of the mounting mechanism 110 and is used to perform shot peening on the gear 100. A temperature detection device 300 is disposed on the periphery of the mounting mechanism 110 and is staggered from the microparticle shot peening device 200, and is used to detect the temperature of the tooth surface of the gear 100. Angle detection device 400 is used to detect the rotation angle of gear 100.

[0033] In this embodiment, gear 100 is rotatably mounted on mounting mechanism 110. Rotary drive mechanism 120 and protective purge nozzle 500 are optional components. In some embodiments, mounting mechanism 110 itself can drive gear rotation. In other embodiments, rotary drive mechanism 120 is connected to mounting mechanism 110, driving the portion of mounting mechanism 110 connected to gear 100 to rotate, thereby driving gear 100 to rotate. Rotary drive mechanism 120 drives gear 100 to rotate at a preset speed. Rotary drive mechanism 120 is a stepper motor used to precisely control the speed of gear 100. Microparticle shot peening device 200 performs shot peening on gear 100. Temperature detection device 300 is used to detect the temperature of the gear tooth surface when it passes through the temperature detection area. Temperature detection device 300 is preferably a non-contact infrared temperature sensor, but infrared thermal imager, fiber optic temperature sensor, or other temperature detection elements suitable for high-speed dynamic temperature measurement can also be used. An angle detection device 400 is used to detect the rotation angle of gear 100. The angle detection device 400 can be an angle encoder, rotary encoder, photoelectric encoder, magnetic encoder, or other detection element capable of outputting the rotation angle position signal of gear 100. A protective purge nozzle 500 is used to spray clean airflow into the detection window or detection optical path area of ​​the temperature detection device 300. The protective purge nozzle 500 can reduce the influence of shot peening dust, splash particles, and reflected light on the temperature detection device 300. The blowing direction, outlet pressure, gas flow rate, and installation position of the protective purge nozzle 500 are configured so that the purge airflow mainly acts on the detection window or detection optical path inlet of the temperature detection device 300, and does not directly act on the temperature detection area. Preferably, the protective purge nozzle 500 is disposed on the side of the detection window of the temperature detection device 300, and its blowing direction is approximately parallel to the surface of the detection window to form an air curtain on the surface of the detection window, thereby preventing the adhesion of shot peening media, dust, or oil mist. The airflow action area and temperature detection area of ​​the protective purge nozzle 500 are spatially separated, and the purge airflow is attenuated to a level that will not significantly change the tooth surface temperature before reaching the tooth surface. The protective purge nozzle 500 uses low-pressure, low-flow continuous purging, or uses a higher flow rate for short-term purging during the temperature measurement interval; the purge gas is preferably filtered and dried air or inert gas, and the temperature difference between the purge gas and the ambient temperature is less than a preset temperature difference, so as to reduce the impact of the purge airflow on the tooth surface temperature and the temperature of the temperature detection device 300 window.

[0034] In some embodiments, a gear tooth surface temperature detection device during gear microparticle shot peening further includes a data processing unit. The data processing unit is a programmable logic controller (PLC). Based on the gear 100 rotation angle position, gear 100 geometric parameters, and sensor position, the data processing unit maps the temperature signal to the corresponding tooth number and tooth surface region. Furthermore, based on the comparison results between the temperature value of each tooth surface region and a preset temperature threshold, the data processing unit adjusts the shot peening pressure, shot peening medium flow rate, gear 100 rotation speed, nozzle movement speed, and shot peening duration in stages; it also performs local parameter adjustment for single tooth regions to achieve zoned strengthening optimization.

[0035] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A method for detecting the surface temperature of gear teeth during microparticle shot peening, characterized in that, Includes the following steps: Step S1: Control the gear (100) to rotate and perform microparticle shot peening on the tooth surface of the gear (100); Step S2: After the tooth surface to be machined is rotated outside the shot peening area, the current temperature of the tooth surface is measured to obtain the measured temperature value. ; Step S3: Based on the measured temperature value Calculate the temperature of the tooth surface during shot peening to obtain the actual temperature value. ; Step S4: Based on the actual temperature value Adjust the processing parameters for shot peening.

2. The method for detecting gear surface temperature during microparticle shot peening according to claim 1, characterized in that, In step S3, the actual temperature value The calculation formula is: ， in, The ambient reference temperature The time delay between moving from the shot peening area to the temperature detection area. is the thermal decay time constant.

3. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 1, characterized in that: Step S4 specifically includes the following steps: based on the actual temperature value The effective temperature value T is obtained, and the effective temperature value T is compared with the preset temperature range to adjust the processing parameters of shot peening.

4. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 3, characterized in that: Based on the actual temperature value To obtain the effective temperature value T, the actual temperature value is processed using one or more of the following methods: sliding window filtering, adjacent tooth period comparison, median filtering, threshold judgment, and interpolation correction. .

5. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 3, characterized in that: The step of comparing the effective temperature value T with the preset temperature range specifically includes the following steps: When the effective temperature value T is less than or equal to the first temperature threshold T1 in the preset temperature range, the current shot peening processing parameters are maintained. When the effective temperature value T is greater than the first temperature threshold T1 in the preset temperature range, and the effective temperature value T is less than or equal to the second temperature threshold T2 in the preset temperature range, the shot peening pressure and / or the shot peening medium flow rate are reduced. When the effective temperature value T is greater than the second temperature threshold T2 in the preset temperature range and the effective temperature value T is less than or equal to the third temperature threshold T3 in the preset temperature range, the continuous shot peening is switched to intermittent shot peening, and the rotation speed of the gear (100) is reduced or the nozzle movement speed is adjusted. Shot peening is stopped when the effective temperature value T is greater than the third temperature threshold T3 in the preset temperature range.

6. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 5, characterized in that, The method further includes the following after step S4: Step S5: After adjusting the processing parameters of shot peening, if the effective temperature value T of a certain tooth surface on the gear (100) exceeds the preset temperature range three times in a row, then the zone control strategy is executed.

7. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 6, characterized in that, The zone control strategy includes one or more of the following: reducing the shot peening duration of the corresponding tooth surface, increasing the intermittent cooling time, reducing the nozzle movement speed corresponding to the tooth surface, skipping the next shot peening treatment of the tooth surface, and performing compensatory shot peening after the temperature recovers to the preset temperature range.

8. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 7, characterized in that, The method further includes the following after step S5: Step S6: Perform quality analysis on the gear (100) based on the effective temperature value T of different regions on the gear (100).

9. The method for detecting gear surface temperature during gear microparticle shot peening according to claim 1, characterized in that: The processing parameters for shot peening include one or more of the following: shot peening pressure, shot peening medium flow rate, gear speed, nozzle moving speed, distance between nozzle and tooth surface, duration of a single shot peening, shot peening interval time, and cooling airflow parameters.

10. A gear tooth surface temperature detection device during gear microparticle shot peening, characterized in that, A method for detecting gear surface temperature during the gear microparticle shot peening process according to any one of claims 1-9, comprising: Mounting mechanism (110) for mounting gear (100) and driving gear (100) to rotate; A microparticle shot peening device (200) is disposed on the periphery of the mounting mechanism (110) for shot peening the gear (100); A temperature detection device (300) is disposed on the periphery of the mounting mechanism (110) and is staggered from the microparticle shot peening device (200) for detecting the temperature of the tooth surface of the gear (100); An angle detection device (400) is used to detect the rotation angle of the gear (100).

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