Hub temperature measuring device, hub heating equipment and temperature measuring method thereof

Abstract

The invention relates to the technical field of hub processing, in particular to a hub temperature measuring device, hub heating equipment and a temperature measuring method thereof, and the hub temperature measuring device comprises a fixed seat which is used for being fixedly connected with a target platform; the driving device is fixedly connected with the fixed seat; the positioning seat is movably connected with the fixing seat and fixedly connected with an output shaft of the driving device so as to be close to or far away from a to-be-detected hub located on the target platform, the positioning seat is provided with an opening which is gradually expanded in the axial direction of the output shaft, and the opening is used for containing and positioning the to-be-detected hub; and the temperature measuring probe is telescopically arranged on the side wall, where the opening is formed, of the positioning seat and is used for measuring the surface temperature of the rim of the hub to be measured. According to the invention, positioning and temperature measurement can be carried out on to-be-measured hubs of different sizes, the positioning is accurate and reliable, the application range is wide, the structure is simple, the cost is low, and the measurement efficiency is high.

Description

Technical Field

[0001] The present application relates to the field of wheel hub processing technology, and in particular to a wheel hub temperature measuring device, a wheel hub heating device and a temperature measuring method thereof. Background Art

[0002] Wheels are a crucial component of vehicle tires, and their manufacturing process directly impacts vehicle performance and safety. Spinning is a commonly used forming process in wheel manufacturing. This metalworking technique processes a casting blank at a target temperature through spinning equipment, transforming the wheel rim into a wheel with a specific geometry. This technique enables the creation of complex, lightweight, and durable wheels. Compared to traditional casting or molding processes, spinning reduces material waste and energy consumption, improving production efficiency and product quality. The heat treatment of the wheel prior to spinning plays a crucial role in product quality.

[0003] At present, the wheel hub sizes are diverse, and the fixed temperature measuring probes of the wheel hub induction heating device cannot adapt to the temperatures of wheels of different sizes. It is necessary to redesign multiple fixed temperature measuring probes, which is costly and has low measurement efficiency. Summary of the Invention

[0004] The present application provides a wheel hub temperature measuring device, a wheel hub heating device and a temperature measuring method thereof, which can perform positioning and temperature measurement on wheel hubs of different sizes to be measured, have accurate and reliable positioning, a wide range of applications, a simple structure, low cost and high measurement efficiency.

[0005] In a first aspect, the present application provides a wheel hub temperature measuring device, comprising: a fixing seat for being fixedly connected to a target platform; a driving device fixedly connected to the fixing seat; a positioning seat movably connected to the fixing seat and fixedly connected to the output shaft of the driving device so as to approach or move away from the wheel hub to be measured located on the target platform, the positioning seat having an opening gradually expanding along the axial direction of the output shaft, the opening being used to accommodate and position the wheel hub to be measured; and a temperature measuring probe telescopically arranged on the side wall of the positioning seat forming the opening, for measuring the surface temperature of the rim of the wheel hub to be measured.

[0006] In one possible implementation, the side wall of the positioning seat forming the opening includes a first side wall and a second side wall set at a preset angle, and the number of temperature measuring probes is multiple, and at least two temperature measuring probes are respectively provided on the first side wall and the second side wall to serve as a high-temperature measuring point and a low-temperature measuring point for monitoring the surface temperature of the rim of the wheel hub to be measured.

[0007] In one possible implementation, the positioning seat includes a substrate and a first support portion and a second support portion arranged on the substrate. The substrate is movably connected to the fixed seat and fixedly connected to the output shaft of the driving device. The first support portion and the second support portion are opposite to each other and spaced apart. The first side wall is formed on the first support portion, and the second side wall is formed on the second support portion.

[0008] In one possible implementation, the positioning seat also includes two guide rails and two sliders that are slidably connected to the two guide rails respectively. The guide rails are fixedly connected to the substrate, and the two sliders are fixedly connected to the first support part and the second support part respectively, so that the first support part and the second support part can be movably arranged relative to the center of the substrate.

[0009] In one possible implementation, the first support portion and the second support portion are both right-angled triangular prisms with a hollow interior, the first side wall and the second side wall are respectively the inclined surfaces of the right-angled triangular prism, one right-angled side of the right-angled triangular prism coincides with the substrate, and the other right-angled side is arranged perpendicular to the substrate.

[0010] In one possible implementation, the wheel hub temperature measuring device also includes a nut and a compression spring. One end of the temperature measuring probe is provided with an annular step and a temperature measuring probe located on the annular step. The other end of the temperature measuring probe is penetrated by a compression spring and a side wall in sequence and is threadedly connected to the nut so that the compression spring is located between the annular step and the side wall.

[0011] In one possible implementation, the wheel hub temperature measuring device also includes a guide assembly arranged parallel to the output shaft of the driving device, the guide assembly includes a linear bearing and a guide rod, the linear bearing is arranged on the fixed seat, the guide rod passes through the linear bearing, and one end of the guide rod is connected to the positioning seat.

[0012] In a second aspect, the present application further provides a wheel hub heating device, comprising: a heating platform for carrying and heating a wheel hub to be tested; and a wheel hub temperature measuring device of the present application, wherein the wheel hub temperature measuring device is fixedly connected to the heating platform via a fixed seat, the positioning seat is driven by a driving device to move closer to or away from the wheel hub to be tested, and the surface temperature of the rim of the wheel hub to be tested is measured by a temperature measuring probe. In one possible implementation, the heating platform includes a fixed frame, a pressing assembly, and a heating assembly, the heating assembly includes a turntable rotatable relative to the fixed frame and a permanent magnet assembly disposed on the turntable, the permanent magnet assembly including a plurality of first permanent magnets and a plurality of second permanent magnets arranged alternately and spaced along the circumference of the turntable, the polarities of adjacent first permanent magnets and second permanent magnets being opposite, the pressing assembly moving relative to the fixed frame along the axial direction of the turntable, the wheel hub to be tested being disposed on the pressing assembly and capable of being pressed onto the wheel hub to be tested, and the rim of the wheel hub to be tested being disposed between the permanent magnet assemblies; the wheel hub temperature measuring device is disposed on one side of the heating assembly, and the temperature measuring probe is driven by the driving device to measure the surface temperature of the rim of the wheel hub to be tested.

[0013] On the third aspect, the present application also provides a temperature measurement method for a hub heating device, which is applied to the hub heating device of the present application. The heating platform of the hub heating device includes a turntable rotatable relative to a fixed frame and a permanent magnet assembly arranged on the turntable, and the rim of the hub to be measured is arranged between the permanent magnet assemblies; the temperature measurement method includes: determining a first structure of the permanent magnet assembly and a first rotation speed time curve thereof according to the hub heating temperature time curve and the geometric dimensions and material information of the hub to be measured, the first structure at least including the size, arrangement and magnetic field distribution of multiple first permanent magnets and multiple second permanent magnets in the permanent magnet assembly; determining a first structure of the permanent magnet assembly and a first rotation speed time curve thereof according to the first structure and the corresponding first rotation speed time curve The simulation heating model of the first structure is determined, and the first high temperature measurement point, the first low temperature measurement point and the first theoretical temperature-time curve of the rim of the wheel hub to be measured are determined based on the simulation heating model, the first theoretical temperature-time curve including the theoretical temperature-time curve of the first high temperature measurement point and the theoretical temperature-time curve of the first low temperature measurement point; according to the first theoretical temperature-time curve and the wheel hub heating temperature-time curve, the first structure is iteratively optimized to obtain the second structure of the permanent magnet assembly and its second rotation speed time curve; according to the second structure and the second rotation speed time curve, the simulation heating model of the second structure is determined, and the wheel hub to be measured is determined based on the simulation heating model. The second high temperature measuring point, the second low temperature measuring point and the second theoretical temperature time curve of the rim are determined, and the shape of the second theoretical temperature time curve is close to the shape of the hub heating temperature time curve; a test prototype is constructed according to the simulation heating model of the second structure, and the second actual temperature time curve of the second high temperature measuring point and the second low temperature measuring point is measured by the hub temperature measuring device according to the test prototype and the second rotation speed time curve; according to the second theoretical temperature time curve and the second actual temperature time curve, the second high temperature measuring point and the second low temperature measuring point are iteratively optimized to determine the third high temperature measuring point, the third low temperature measuring point and the third theoretical temperature time curve, and the third theoretical temperature time curve. The shape of the curve is consistent with the shape of the wheel hub heating temperature time curve; according to the second rotation speed time curve, the third measured temperature time curve of the third high temperature measurement point and the third low temperature measurement point is measured; according to the third theoretical temperature time curve and the third measured temperature time curve, the second rotation speed time curve is fine-tuned until the third measured temperature time curve is basically consistent with the third theoretical temperature time curve, wherein the third high temperature measurement point and the third low temperature measurement point are respectively the optimal high temperature measurement point and the optimal low temperature measurement point of the rim of the wheel hub to be measured, and the fine-tuned second rotation speed time curve is the optimal rotation speed time curve corresponding to the optimal structure of the permanent magnet assembly.

[0014] In one possible implementation, the number of first high-temperature measurement points and the number of first low-temperature measurement points are respectively multiple, and the first theoretical temperature-time curve is obtained after denoising the theoretical temperature-time curves of the multiple first high-temperature measurement points and the theoretical temperature-time curves of the multiple first low-temperature measurement points; and / or, the second high-temperature measurement point is a preferably at most two second high-temperature measurement points obtained after further denoising based on the theoretical temperature-time curves of the multiple second high-temperature measurement points on the basis of the denoised first high-temperature measurement point; the second low-temperature measurement point is a preferably at most two second low-temperature measurement points obtained after further denoising based on the theoretical temperature-time curves of the multiple second low-temperature measurement points on the basis of the denoised first low-temperature measurement point.

[0015] According to the wheel hub temperature measuring device, wheel hub heating equipment and temperature measuring method provided in the embodiments of the present application, by setting an opening that gradually expands along the axial direction of the output shaft of the driving device on the positioning seat, wheel hubs of different sizes to be measured can be accommodated and automatically positioned. At the same time, a retractable temperature measuring probe is set on the side wall of the positioning seat forming the opening to measure the surface temperature of the rim of the wheel hub to be measured. This can solve the problem of difficult positioning of the wheel hub to be measured and the problem of changeable temperature measurement conditions of the wheel hub to be measured, thereby realizing the integration of positioning and temperature measurement of the wheel hub to be measured, with accurate and reliable positioning, a wide range of applications, a simple structure, low cost and high measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a wheel hub temperature measuring device provided in an embodiment of the present application; Figure 2 for Figure 1 The schematic diagram of the structure of the hub temperature measuring device shown is taken at one angle; Figure 3 for Figure 1 The schematic diagram of the structure of the wheel hub temperature measuring device shown is from another angle; Figure 4 A schematic diagram of the three-dimensional structure of a wheel hub heating device provided in an embodiment of the present application; Figure 5 A schematic diagram of the electrical structure of the wheel hub heating device provided in an embodiment of the present application; Figure 6 This is a flowchart of the temperature measurement method of the wheel hub heating device provided in an embodiment of the present application.

[0018] The following are the descriptions of the reference numerals: 1000, wheel hub heating equipment; 100, wheel hub temperature measuring device; 200, heating platform; 210, fixing frame; 220, crimping assembly; 230, heating assembly; W, wheel hub to be tested; 1. Fixed seat; 11. First fixed plate; 12. Second fixed plate; 2. Driving device; 21. Output shaft; 3. Positioning seat; 30. Opening; 31. First side wall; 32. Second side wall; 33. Base plate; 34. First support portion; 35. Second support portion; 4. Temperature probe; 41. Annular step; 42. Temperature probe; 43. Nut; 44. Compression spring; 5. Guide assembly; 51. Linear bearing; 52. Guide rod. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions of this application in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the wheel hub temperature measuring device provided in an embodiment of the present application.

[0021] like Figure 1 As shown, an embodiment of the present application provides a wheel hub temperature measuring device 100 , comprising a fixing seat 1 , a driving device 2 , a positioning seat 3 and a temperature measuring probe 4 .

[0022] The fixing base 1 is fixedly connected to the target platform, the driving device 2 is fixedly connected to the fixing base 1, and the positioning base 3 is movably connected to the fixing base 1 and fixedly connected to the output shaft 21 of the driving device 2 to allow it to approach or move away from the wheel hub W to be tested on the target platform. The positioning base 3 has an opening 30 that is gradually expanded along the axial direction of the output shaft 21. The opening 30 is used to accommodate and position the wheel hub W to be tested. The temperature measuring probe 4 is retractably arranged on the side wall of the positioning base 3 forming the opening 30 and is used to measure the surface temperature of the rim of the wheel hub W to be tested.

[0023] In this embodiment, after the wheel hub W to be tested is removed from the casting furnace, the surface temperature of its rim is generally above 300°C, which is related to the static time after the wheel hub W is removed. The temperature required for spinning the rim of the wheel hub W to be tested is generally 350°C ± 30°C. If the surface temperature of the rim of the wheel hub to be tested is lower than the required temperature, the rim of the wheel hub to be tested needs to be heated by a wheel hub heating device before the subsequent spinning process is carried out. During this process, the surface temperature of the rim of the wheel hub to be tested needs to be measured in real time by the wheel hub temperature measuring device 100.

[0024] Specifically, the fixed seat 1 of the wheel hub temperature measuring device 100 includes a first fixed plate 11 and a second fixed plate 12 arranged in an intersecting manner. The second fixed plate 12 is used to be fixedly connected to the target platform, which can be a heating platform of the wheel hub heating equipment. The first fixed plate 11 is fixedly connected to the driving device 2. The output shaft 21 of the driving device 2 passes through the first fixed plate 11 and is fixedly connected to the positioning seat 3. The positioning seat 3 and the first fixed plate 11 are movably connected. The output shaft 21 of the driving device 2 drives the positioning seat 3 to move linearly to approach or move away from the wheel hub W to be measured on the target platform.

[0025] The positioning seat 3 is provided with an opening 30 that gradually expands along the axial direction of the output shaft 21. The sidewall of the positioning seat 3 forming the opening 30 can be a trumpet-shaped structure with a gradually expanding shape throughout the entire circle, or a wall portion with a gradually expanding shape. The gradually expanding opening 30 has a self-centering function, which can accommodate and automatically position wheel hubs W of different sizes. A retractable temperature measuring probe 4 is provided on the sidewall of the positioning seat 3 forming the opening 30. When the wheel hub W to be tested contacts the opening 30 of the positioning seat 3, the outer surface of the rim of the wheel hub W to be tested presses against the temperature measuring probe 4 on the sidewall of the opening 30, causing the temperature measuring probe 4 to be compressed and pre-tightened. This ensures that the temperature measuring probe 4 always maintains good contact with the outer peripheral surface of the rim of the wheel hub W to be tested. The compression of the temperature measuring probe 4 can be adaptively adjusted for different wheel hub sizes, allowing the temperature measuring probe 4 to contact the surface of the rim of the wheel hub W to achieve temperature measurement. This meets the temperature measurement requirements of various wheel hub models to be tested, and has a wide range of applications.

[0026] According to the wheel hub temperature measuring device 100 provided in the present application, by setting an opening 30 that is gradually expanded along the axial direction of the output shaft of the driving device 2 on the positioning seat 3, the wheel hubs W to be measured of different sizes can be accommodated and automatically positioned. At the same time, a retractable temperature measuring probe 4 is set on the side wall of the positioning seat 3 forming the opening 30, which is used to measure the surface temperature of the rim of the wheel hub W to be measured. This can solve the problem of difficult positioning of the wheel hub W to be measured and the problem of changeable temperature measurement conditions of the wheel hub W to be measured, thereby realizing the integration of positioning and temperature measurement of the wheel hub W to be measured, with accurate and reliable positioning, a wide range of applications, a simple structure, low cost and high measurement efficiency.

[0027] Figure 2 for Figure 1 The schematic diagram of the hub temperature measuring device is shown along an angle. Figure 3 for Figure 1 The schematic diagram of the structure of the wheel hub temperature measuring device is shown from another angle.

[0028] In some embodiments, the side wall of the positioning seat 3 forming the opening 30 includes a first side wall 31 and a second side wall 32 set at a preset angle, and the number of temperature measuring probes 4 is multiple, and at least two temperature measuring probes 4 are respectively provided on the first side wall 31 and the second side wall 32, which serve as a high-temperature measuring point and a low-temperature measuring point for monitoring the surface temperature of the rim of the wheel hub W to be measured.

[0029] like Figure 2 and Figure 3 As shown, the opening 30 of the positioning seat 3 is arranged in a gradually expanding V-shape along the axial direction of the output shaft 21. The side walls forming the opening 30 include a first side wall 31 and a second side wall 32 set at a preset angle. The size of the preset angle is related to the arrangement order of the permanent magnet components in the wheel hub heating device. This article will later introduce in detail the optimal preset angles of the first side wall 31 and the second side wall 32 determined based on simulation design data and actual test data when the permanent magnet components of the wheel hub heating device heat the wheel hub W to be tested.

[0030] Optionally, at least two temperature measuring probes 4 are respectively provided on the first side wall 31 and the second side wall 32. The two or more temperature measuring probes 4 can be located in the same plane or in different planes. The two or more temperature measuring probes 4 on the first side wall 31 serve as high-temperature temperature measuring points for monitoring the surface temperature of the wheel hub W to be measured, and the two or more temperature measuring probes 4 on the second side wall 32 serve as low-temperature temperature measuring points for monitoring the surface temperature of the rim of the wheel hub W to be measured.

[0031] Since the wheel hub temperature measuring device 100 can simultaneously monitor the temperature of the high-temperature measuring point and the low-temperature measuring point of the rim of the wheel hub W to be tested, and compare the two sets of temperature data, on the one hand, it can ensure that the heating temperature of the surface of the rim of the wheel hub W to be tested is relatively uniform and the temperature difference is within the design range; on the other hand, it can ensure that the monitored surface temperature of the rim of the wheel hub W to be tested is more accurate and more reliable.

[0032] In some embodiments, the positioning seat 3 includes a substrate 33 and a first support portion 34 and a second support portion 35 arranged on the substrate 33. The substrate 33 is movably connected to the fixing seat 1 and fixedly connected to the output shaft 21 of the driving device 2. The first support portion 34 and the second support portion 35 are opposite to each other and spaced apart. The first side wall 31 is formed on the first support portion 34, and the second side wall 32 is formed on the second support portion 35.

[0033] like Figure 2 and Figure 3 As shown, the positioning seat 3 includes a base plate 33, a first support portion 34 and a second support portion 35. The first support portion 34 and the second support portion 35 are arranged opposite to each other and spaced apart. The structures of the two can be any shape, as long as the first side wall 31 is formed on the first support portion 34, the second side wall 32 is formed on the second support portion 35, and the first side wall 31 and the second side wall 32 are arranged at a preset angle. The structure is simple and easy to manufacture.

[0034] In some embodiments, the first support portion 34 and the second support portion 35 are movable relative to the center of the base plate 33. This arrangement, on the one hand, allows the two sets of temperature measuring probes 4 to always monitor the temperatures of the high and low temperature areas of the wheel hub W. On the other hand, the size of the opening 30 can be adjusted to accommodate a wider range of wheel hubs W of different sizes, meeting the temperature measurement requirements of a wider range of wheel hubs W, and extending its applicability.

[0035] In some embodiments, the positioning seat 3 further includes two guide rails and two sliders slidably connected to the two guide rails respectively. The guide rails are fixedly connected to the base plate 33 , and the two sliders are fixedly connected to the first support portion 34 and the second support portion 35 respectively.

[0036] In this embodiment, by respectively arranging a guide rail slider structure between the base plate 33 of the positioning seat 3 and the first support part 34 or the second support part 35, the first support part 34 and the second support part 35 can be movably arranged relative to the center of the base plate 33, so that the first side wall 31 and the second side wall 32 can be relatively close to or far away from each other, so that the size of the opening 30 can be adaptively adjusted according to the size of various models of the wheel hub W to be tested, which is easy to operate and has a wider range of applications.

[0037] In some embodiments, the first support portion 34 and the second support portion 35 are both hollow right-angled triangular prisms, the first side wall 31 and the second side wall 32 are respectively the inclined surfaces of the right-angled triangular prisms, one right-angled side of the right-angled triangular prism coincides with the substrate 33, and the other right-angled side is set perpendicular to the substrate 33.

[0038] like Figures 1 to 3 As shown, the first support portion 34 and the second support portion 35 are both hollow rectangular triangular prisms, which reduces their weight while improving their structural strength and rigidity. The first side wall 31 and the second side wall 32 are both inclined surfaces of the rectangular triangular prisms, facing each other and spaced apart at a predetermined angle. This simplifies the structure of the first support portion 34 and the second support portion 35 and facilitates manufacturing.

[0039] In some embodiments, the wheel hub temperature measuring device 100 also includes a nut 43 and a compression spring 44. One end of the temperature measuring probe 4 is provided with an annular step 41 and a temperature measuring probe 42 located on the annular step 41. The other end of the temperature measuring probe 4 is penetrated by the compression spring 44 and the side wall in sequence, and is threadedly connected to the nut 43 so that the compression spring 44 is located between the annular step 41 and the side wall.

[0040] like Figure 2 As shown, the temperature measuring probe 4 is retractable by a compression spring 44 located between the annular step 41 and the first side wall 31 or between the annular step 41 and the second side wall 32, so that the compression amount of the temperature measuring probe 4 can be adaptively adjusted for wheel hubs W of different sizes to be measured, so that the temperature measuring probe 4 can contact the surface of the rim of wheel hubs W of different sizes to be measured to achieve temperature measurement, thereby meeting the temperature measurement requirements of various models of wheel hubs W to be measured and having a wide range of applications.

[0041] In some embodiments, the wheel hub temperature measuring device 100 further includes a guide assembly 5 , which is disposed between the fixing seat 1 and the positioning seat 3 and parallel to the output shaft 21 of the driving device 2 .

[0042] like Figure 2 and Figure 3 As shown, there are two guide assemblies 5, which are respectively arranged between the first fixing plate 11 of the fixing seat 1 and the first support portion 34 of the positioning seat 3 and between the first fixing plate 11 and the second support portion 35, and are arranged parallel to the output shaft 21 of the driving device 2. The guide assembly 5 is used to assist the output shaft 21 of the driving device 2 to drive the positioning seat 3 to move linearly, prevent the positioning seat 3 from deflecting and getting stuck due to uneven force, assembly errors, etc. during the linear motion, and improve the stability and accuracy of the positioning seat 3 during the linear motion.

[0043] In some embodiments, the guide assembly 5 includes a linear bearing 51 and a guide rod 52 . The linear bearing 51 is disposed on the fixed seat 1 . The guide rod 52 passes through the linear bearing 51 , and one end of the guide rod 52 is connected to the positioning seat 3 .

[0044] like Figure 3 As shown, the guide assembly 5 includes a linear bearing 51 and a guide rod 52. A through hole is provided on the first fixed plate 11 of the fixed seat 1, and the linear bearing 51 is interference-connected with the through hole. The linear bearing 51 is passed through one end of the guide rod 52, and a flange is provided at the other end of the guide rod 52. The flange is fixedly connected to the base plate 33 of the positioning seat 3. The cooperation between the linear bearing 51 and the guide rod 52 can reduce the friction force of the output shaft 21 of the auxiliary drive device 2 of the guide assembly 5 driving the positioning seat 3 during the linear motion, thereby further improving the stability and accuracy of the positioning seat 3 during the linear motion.

[0045] Figure 4This is a schematic diagram of the three-dimensional structure of the wheel hub heating device provided in an embodiment of the present application. Figure 5 This is a schematic diagram of the electrical structure of the wheel hub heating device provided in an embodiment of the present application.

[0046] like Figure 4 As shown, an embodiment of the present application provides a wheel hub heating device 1000 , comprising a heating platform 200 and a wheel hub temperature measuring device 100 according to an embodiment of the present application.

[0047] The heating platform 200 is used to carry and heat the wheel hub W to be tested. The wheel hub temperature measuring device 100 is fixedly connected to the heating platform 200 through the fixed seat 1. The positioning seat 3 is driven close to or away from the wheel hub W to be tested by the driving device 2, and the surface temperature of the rim of the wheel hub W to be tested is measured by the temperature measuring probe 4.

[0048] In some embodiments, the heating platform 200 includes a fixed frame 210, a crimping assembly 220 and a heating assembly 230. The heating assembly 230 includes a turntable rotatable relative to the fixed frame 210 and a permanent magnet assembly arranged on the turntable. The permanent magnet assembly includes a plurality of first permanent magnets and a plurality of second permanent magnets alternately and spaced along the circumference of the turntable. The polarities of adjacent first permanent magnets and second permanent magnets are opposite. The crimping assembly 220 moves relative to the fixed frame 210 along the axial direction of the turntable and is capable of pressing the wheel hub W to be measured so that the rim of the wheel hub W to be measured is set between the permanent magnet assemblies; the wheel hub temperature measuring device 100 is arranged on one side of the heating assembly 230, and the temperature measuring probe 4 is driven by the driving device 2 to measure the surface temperature of the rim of the wheel hub W to be measured.

[0049] The heating assembly 230 further includes a rotating motor and a transmission reduction assembly for driving the turntable to rotate, thereby driving the permanent magnet assembly to rotate. When the rim of the wheel hub W to be tested is heated, the wheel hub W to be tested is fixed on the side of the pressing assembly 220 close to the heating assembly 230, and the pressing assembly 220 is moved downward relative to the fixing frame 210 and close to the heating assembly 230 until the rim of the wheel hub W to be tested is accommodated between the permanent magnet assemblies of the heating assembly 230; the turntable is rotated, and the permanent magnet assembly on the turntable rotates with the turntable, so that the first permanent magnet and the second permanent magnet with opposite polarities generate an alternating magnetic field on the surface of the rim of the wheel hub W to be tested. The surface of the rim of the wheel hub W to be tested generates heat and heats up under the action of the alternating magnetic field, so that the surface temperature of the rim of the wheel hub W to be tested can be quickly and evenly heated to the target temperature; after the heating is completed, the pressing assembly 220 drives the wheel hub W to be tested to move upward relative to the fixing frame 210 to move away from the heating assembly 230; the wheel hub W to be tested is removed, and the wheel hub W to be tested is transported to the spinning equipment by the manipulator for subsequent spinning process.

[0050] like Figure 5As shown, the wheel hub temperature measuring device 100 includes not only the temperature measuring probe 4 but also temperature measuring components such as a temperature transmitter, a filter capacitor, a filter resistor, and a PLC control system.

[0051] During the process of heating the wheel hub W to be tested, the temperature probe 4 of the wheel hub temperature measuring device 100 contacts the surface of the rim of the wheel hub W to be tested. As the rim temperature rises, the temperature probe 4 generates a small voltage signal, which is then transmitted to the temperature transmitter. The temperature transmitter converts the voltage signal into a temperature signal, and the filter capacitor and filter resistor are used to filter out interference signals in the voltage signal. The temperature signal generated by the temperature transmitter is transmitted to the PLC control system. The PLC control system sets the wheel hub heating temperature curve (empirical curve) based on the wheel hub heating process parameters. The PLC control system outputs signals to control the rotation of the heating components (including the starting, acceleration, and deceleration of the rotating motor) in the wheel hub heating device 1000. The rotating motor drives the permanent magnet assembly to rotate, thereby controlling the heating and insulation of the wheel rim surface.

[0052] It should be noted that the wheel hub heating process parameters are those required for the next process step, namely the wheel hub spinning process. These process parameters require that the wheel hub heating device 1000 heat the wheel hub W to be tested according to a predetermined wheel hub heating temperature curve. There is a one-to-one correspondence between this wheel hub heating temperature curve and the rotational characteristics of the rotating motor, and between this rotational characteristics and the surface heating temperature of the wheel hub W to be tested (or the heating and insulation conditions of the wheel hub W to be tested). The following describes the temperature measurement method for the wheel hub heating device provided in the present embodiment, combining simulation design data and actual test data from the permanent magnet assembly in the wheel hub heating device 1000 heating the wheel hub W to be tested.

[0053] Figure 6 This is a flowchart of the temperature measurement method of the wheel hub heating device provided in an embodiment of the present application.

[0054] like Figure 6 As shown, an embodiment of the present application provides a temperature measurement method for a wheel hub heating device, which is applied to the wheel hub heating device 1000 of the embodiment of the present application. The heating platform 200 of the wheel hub heating device 1000 includes a turntable rotatable relative to a fixed frame 210 and a permanent magnet assembly arranged on the turntable. The rim of the wheel hub W to be measured is arranged between the permanent magnet assemblies.

[0055] The temperature measurement method of the wheel hub heating device according to the embodiment of the present application includes the following steps S1 to S8.

[0056] Step S1: Determine a first structure of the permanent magnet assembly and a first rotational speed time curve thereof based on the wheel hub heating temperature time curve and the geometric dimensions and material information of the wheel hub W to be tested. The first structure includes at least the size, arrangement, and magnetic field distribution of the plurality of first permanent magnets and the plurality of second permanent magnets in the permanent magnet assembly. Step S2: Determine a simulation heating model of the first structure according to the first structure and the corresponding first rotational speed time curve, and determine a first high-temperature measurement point, a first low-temperature measurement point, and a first theoretical temperature-time curve of the rim of the wheel hub W to be measured based on the simulation heating model, where the first theoretical temperature-time curve includes a theoretical temperature-time curve of the first high-temperature measurement point and a theoretical temperature-time curve of the first low-temperature measurement point; Step S3: iteratively optimizing the first structure according to the first theoretical temperature-time curve and the hub heating temperature-time curve to obtain a second structure of the permanent magnet assembly and a second rotation speed-time curve thereof; Step S4: determining a simulation heating model of the second structure according to the second structure and the second rotational speed time curve, and determining a second high-temperature measurement point, a second low-temperature measurement point, and a second theoretical temperature-time curve of the rim of the wheel hub W to be tested based on the simulation heating model, wherein the shape of the second theoretical temperature-time curve is close to the shape of the wheel hub heating temperature-time curve; Step S5: constructing a test prototype according to the simulation heating model of the second structure, and measuring a second measured temperature-time curve of a second high-temperature measuring point and a second low-temperature measuring point by the wheel hub temperature measuring device 100 according to the test prototype and the second rotation speed-time curve; Step S6: Iteratively optimizing the second high-temperature measurement point and the second low-temperature measurement point based on the second theoretical temperature-time curve and the second measured temperature-time curve, determining a third high-temperature measurement point, a third low-temperature measurement point, and a third theoretical temperature-time curve, wherein the shape of the third theoretical temperature-time curve is consistent with the shape of the wheel hub heating temperature-time curve; Step S7: measuring a third measured temperature-time curve at a third high-temperature measuring point and a third low-temperature measuring point according to the second rotation speed-time curve; Step S8: Based on the third theoretical temperature-time curve and the third measured temperature-time curve, fine-tune the second rotational speed-time curve until the third measured temperature-time curve is substantially consistent with the third theoretical temperature-time curve. The third high-temperature measurement point and the third low-temperature measurement point are, respectively, the optimal high-temperature measurement point and the optimal low-temperature measurement point for the rim of the tested wheel hub W. The fine-tuned second rotational speed-time curve represents the optimal rotational speed-time curve corresponding to the optimal structure of the permanent magnet assembly. The optimal structure of the permanent magnet assembly may include, for example, but is not limited to, a preset angle of the V-shaped opening 30 of the positioning seat 3. This preset angle is related to the arrangement of the permanent magnet assembly in the wheel hub heating apparatus 1000.

[0057] In some embodiments, the number of first high-temperature measurement points and the number of first low-temperature measurement points are multiple, respectively, and the first theoretical temperature-time curve is obtained after denoising the theoretical temperature-time curves of the multiple first high-temperature measurement points and the theoretical temperature-time curves of the multiple first low-temperature measurement points. "Denoising" here refers to removing the temperature measurement points that are obviously different from the wheel hub heating temperature-time curve in the theoretical temperature-time curves of the multiple first high-temperature measurement points or the theoretical temperature-time curves of the multiple first low-temperature measurement points, thereby reducing the number of temperature measurement points and the amount of data analysis, that is, optimizing the temperature measurement points. Specific denoising methods can adopt currently more mature denoising methods, such as filter-based methods (mean filtering, median filtering, Gaussian filtering, adaptive Wiener filtering), model-based methods (partial differential equation method, variational method) and learning-based methods (non-local mean algorithm, block matching 3D filtering), etc.

[0058] In some embodiments, the second high-temperature measurement point is a plurality of second high-temperature measurement points obtained by further denoising the first high-temperature measurement point after denoising according to the theoretical temperature-time curve of the second high-temperature measurement point; the second low-temperature measurement point is a plurality of second low-temperature measurement points obtained by further denoising the theoretical temperature-time curve of the second low-temperature measurement point after denoising according to the first low-temperature measurement point after denoising.

[0059] Denoising here refers to removing any temperature points that significantly differ from the wheel hub heating temperature-time curves from the theoretical temperature-time curves of multiple second high-temperature measurement points or the theoretical temperature-time curves of multiple second low-temperature measurement points. This reduces the number of temperature measurement points and the amount of data analysis required, i.e., optimizes the temperature measurement points. Specific denoising methods can be referenced by any of the aforementioned methods and are not detailed here.

[0060] According to the temperature measurement method of the wheel hub heating equipment provided in the embodiment of the present application, the temperature of the high-temperature measuring point and the temperature of the low-temperature measuring point of the rim of the wheel hub W to be measured can be monitored simultaneously, and the two sets of temperature data can be compared. On the one hand, it can ensure that the heating temperature of the surface of the rim of the wheel hub W to be measured is relatively uniform and the temperature difference is within the design range. On the other hand, it can ensure that the monitored surface temperature of the rim of the wheel hub W to be measured is more accurate and more reliable.

[0061] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0062] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0063] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wheel hub temperature measuring device, characterized in that: include: A fixing seat, used for fixed connection with the target platform; A driving device, fixedly connected to the fixing seat; a positioning seat movably connected to the fixing seat and fixedly connected to the output shaft of the driving device so as to approach or move away from the wheel hub to be measured on the target platform, wherein the positioning seat has an opening gradually expanding along the axial direction of the output shaft, and the opening is used to accommodate and position the wheel hub to be measured; as well as The temperature measuring probe is telescopically arranged on the side wall of the positioning seat forming the opening, and is used to measure the surface temperature of the rim of the wheel hub to be measured.

2. The wheel hub temperature measuring device according to claim 1, characterized in that: The side wall of the positioning seat forming the opening includes a first side wall and a second side wall set at a preset angle. The number of the temperature measuring probes is multiple, and at least two temperature measuring probes are respectively provided on the first side wall and the second side wall to serve as a high-temperature measuring point and a low-temperature measuring point for monitoring the surface temperature of the rim of the wheel hub to be measured.

3. The wheel hub temperature measuring device according to claim 2, characterized in that: The positioning seat includes a base plate and a first supporting portion and a second supporting portion arranged on the base plate. The base plate is movably connected to the fixing seat and fixedly connected to the output shaft of the driving device. The first supporting portion and the second supporting portion are opposite to each other and spaced apart. The first side wall is formed on the first supporting portion, and the second side wall is formed on the second supporting portion.

4. The wheel hub temperature measuring device according to claim 3, characterized in that: The positioning seat also includes two guide rails and two sliders that are slidably connected to the two guide rails respectively. The guide rails are fixedly connected to the base plate, and the two sliders are fixedly connected to the first support part and the second support part respectively, so that the first support part and the second support part can be movably arranged relative to the center of the base plate.

5. The wheel hub temperature measuring device according to claim 3, characterized in that: The first supporting portion and the second supporting portion are both hollow right-angled triangular prisms, the first side wall and the second side wall are respectively the inclined surfaces of the right-angled triangular prisms, one right-angled side of the right-angled triangular prism coincides with the substrate, and the other right-angled side is arranged perpendicular to the substrate.

6. The wheel hub temperature measuring device according to any one of claims 1 to 5, characterized in that: It also includes a nut and a compression spring. One end of the temperature measuring probe is provided with an annular step and a temperature measuring probe located on the annular step. The other end of the temperature measuring probe passes through the compression spring and the side wall in sequence and is threadedly connected to the nut so that the compression spring is located between the annular step and the side wall.

7. The wheel hub temperature measuring device according to any one of claims 1 to 5, characterized in that: It also includes a guide assembly arranged parallel to the output shaft of the driving device, the guide assembly includes a linear bearing and a guide rod, the linear bearing is arranged on the fixed seat, the guide rod passes through the linear bearing, and one end of the guide rod is connected to the positioning seat.

8. A wheel hub heating device, characterized in that: include: Heating platform, used to carry and heat the wheel to be tested; and The wheel hub temperature measuring device according to any one of claims 1 to 7, wherein the wheel hub temperature measuring device is fixedly connected to the heating platform via a fixing seat, the positioning seat is driven by a driving device to move closer to or away from the wheel hub to be measured, and the surface temperature of the rim of the wheel hub to be measured is measured by a temperature measuring probe.

9. The wheel hub heating device according to claim 8, characterized in that: The heating platform includes a fixed frame, a crimping assembly, and a heating assembly. The heating assembly includes a turntable rotatable relative to the fixed frame and a permanent magnet assembly disposed on the turntable. The permanent magnet assembly includes a plurality of first permanent magnets and a plurality of second permanent magnets alternately and spaced apart along the circumference of the turntable. Adjacent first permanent magnets and second permanent magnets have opposite polarities. The crimping assembly moves relative to the fixed frame along the axial direction of the turntable and is capable of being crimped onto the wheel hub to be tested so that the rim of the wheel hub to be tested is disposed between the permanent magnet assemblies. The wheel hub temperature measuring device is arranged on one side of the heating assembly, and the driving device drives the temperature measuring probe to measure the surface temperature of the rim of the wheel hub to be measured.

10. A temperature measurement method for a wheel hub heating device, applied to the wheel hub heating device according to claim 8 or 9, wherein the heating platform of the wheel hub heating device comprises a turntable rotatable relative to a fixed frame and a permanent magnet assembly disposed on the turntable, and the rim of the wheel hub to be measured is disposed between the permanent magnet assemblies, characterized in that: The temperature measurement method comprises: Determine a first structure of the permanent magnet assembly and a first rotational speed time curve thereof based on the wheel hub heating temperature time curve and the geometric dimensions and material information of the wheel hub to be tested, wherein the first structure includes at least the size, arrangement, and magnetic field distribution of the plurality of first permanent magnets and the plurality of second permanent magnets in the permanent magnet assembly; Determining a simulation heating model of the first structure according to the first structure and the corresponding first rotational speed time curve, and determining a first high-temperature measurement point, a first low-temperature measurement point, and a first theoretical temperature-time curve of the rim of the wheel hub to be tested based on the simulation heating model, wherein the first theoretical temperature-time curve includes a theoretical temperature-time curve of the first high-temperature measurement point and a theoretical temperature-time curve of the first low-temperature measurement point; Iteratively optimizing the first structure according to the first theoretical temperature-time curve and the hub heating temperature-time curve to obtain a second structure of the permanent magnet assembly and a second rotation speed-time curve thereof; Determining a simulation heating model of the second structure according to the second structure and the second rotational speed time curve, and determining a second high-temperature measurement point, a second low-temperature measurement point, and a second theoretical temperature-time curve of the rim of the wheel hub to be tested based on the simulation heating model, wherein a shape of the second theoretical temperature-time curve approaches a shape of the wheel hub heating temperature-time curve; Building a test prototype according to the simulation heating model of the second structure, and measuring second measured temperature-time curves of the second high-temperature measuring point and the second low-temperature measuring point by the wheel hub temperature measuring device based on the test prototype and the second rotation speed-time curve; Iteratively optimizing the second high-temperature measurement point and the second low-temperature measurement point based on the second theoretical temperature-time curve and the second measured temperature-time curve to determine a third high-temperature measurement point, a third low-temperature measurement point, and a third theoretical temperature-time curve, wherein the shape of the third theoretical temperature-time curve is consistent with the shape of the wheel hub heating temperature-time curve; measuring a third measured temperature-time curve of the third high-temperature measuring point and the third low-temperature measuring point according to the second rotation speed-time curve; According to the third theoretical temperature-time curve and the third measured temperature-time curve, the second rotation speed-time curve is fine-tuned until the third measured temperature-time curve is substantially consistent with the third theoretical temperature-time curve, wherein the third high-temperature measurement point and the third low-temperature measurement point are respectively the optimal high-temperature measurement point and the optimal low-temperature measurement point of the rim of the wheel hub to be measured, and the second rotation speed-time curve after fine-tuning is the optimal rotation speed-time curve corresponding to the optimal structure of the permanent magnet assembly.

11. The temperature measurement method according to claim 10, characterized in that: The number of the first high-temperature measurement points and the number of the first low-temperature measurement points are both plural, and the first theoretical temperature-time curve is obtained by denoising the theoretical temperature-time curves of the plurality of the first high-temperature measurement points and the theoretical temperature-time curves of the plurality of the first low-temperature measurement points; And / or, the second high-temperature measurement point is a preferably at most two second high-temperature measurement points obtained after further denoising based on the first high-temperature measurement point after denoising according to the theoretical temperature-time curve of multiple second high-temperature measurement points; the second low-temperature measurement point is a preferably at most two second low-temperature measurement points obtained after further denoising based on the first low-temperature measurement point after denoising according to the theoretical temperature-time curve of multiple second low-temperature measurement points.

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