Method of manufacturing a torque assembly

Abstract

The application belongs to the technical field of torque detection, and discloses a torque assembly manufacturing method, which comprises the following steps: stamping a magnet clamping groove on a magnet group holder according to the shape and size of a magnet group, and installing the magnet group in the magnet clamping groove; stamping a magnetic sensor mounting groove on a magnetic sensor holder according to the shape and size of a magnetic sensor, and fixing the magnetic sensor in the magnetic sensor mounting groove; sleeving and fixing the magnet group holder after the magnet group is installed at one end outside a torque support; fixing the torque support after the magnet group holder is installed on a tool, fixing the magnetic sensor holder on a high-precision positioning tool, monitoring the data of the magnetic sensor through the high-precision positioning tool, and assembling the torque support after the magnet group holder is installed and the magnetic sensor holder after the magnetic sensor is installed according to the monitored data of the magnetic sensor, so as to complete the torque assembly manufacturing. The torque assembly manufactured by the application can adapt to high-temperature, high-humidity, oil pollution, vibration and other environments, and has high reliability.

Description

Technical Field

[0001] This invention belongs to the field of torque detection and measurement technology for power tools and electric bicycles, and specifically relates to a method for manufacturing a torque component. Background Technology

[0002] A torque converter can detect and measure the magnitude of the torque exerted on an object after it has been subjected to torque. In a torque wrench, the torque converter is used to detect and measure the tightening torque to determine whether the tightening torque of the device meets the requirements; on an electric bicycle, the torque converter is used to detect and measure the pedaling torque, which is one of the criteria for judging the power output of the motor.

[0003] Commonly used strain gauge torque sensors are torque detection and measurement devices that attach strain gauges to an alloy component. When subjected to torque, the strain gauges change resistance following the deformation parameters of the alloy component. By measuring the resistance of the strain gauge under stress, the magnitude of the torque on the object being measured is determined. Since the strain gauges continuously deform and stretch with the alloy component, the bonding process and reliability of the strain gauges directly affect the reliability and lifespan of the strain gauge torque sensor. Currently, strain gauge bonding is mostly done manually, which is quite complex. Some components also use magnetic sensors to detect and measure torque, but these are mostly manually installed and, due to limitations in manufacturing processes, structural design, and cost, have certain shortcomings in accuracy and reliability, especially noticeable in environments with high temperature, high humidity, oil contamination, or vibration. Summary of the Invention

[0004] The purpose of this invention is to provide a method for manufacturing a torque assembly, which can adapt to environments such as high temperature, high humidity, oil contamination, and vibration, and has high reliability.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for manufacturing a torque assembly, the method comprising the following steps:

[0007] Step 1: According to the shape and size of the magnet assembly, stamp out the corresponding size magnet slots on the magnet assembly holder, and install the magnet assembly in the magnet slots;

[0008] Step 2: According to the shape and size of the magnetic sensor, punch out a magnetic sensor mounting slot of the corresponding size on the magnetic sensor holder, and fix the magnetic sensor in the magnetic sensor mounting slot;

[0009] Step 3: Secure the magnet assembly retainer, after installing the magnet assembly, to one end of the torque bracket outside;

[0010] Step 4: Fix the torque bracket after installing the magnetic assembly retainer onto the tooling, and fix the magnetic sensor retainer after installing the magnetic sensor onto the high-precision positioning tooling. Monitor the data of the magnetic sensor through the high-precision positioning tooling, and assemble the torque bracket after installing the magnetic assembly retainer and the magnetic sensor retainer after installing the magnetic sensor according to the monitored magnetic sensor data to complete the fabrication of the torque assembly.

[0011] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0012] Preferably, step 3 further includes fixing a first internal gear ring and a second internal gear ring inside the torque bracket, wherein the first internal gear ring and the second internal gear ring are located at both ends of the torque bracket.

[0013] Preferably, the magnetic assembly holder, the magnetic sensor holder, and the torque bracket are all made of non-magnetic alloy material.

[0014] Preferably, step 4 involves monitoring the data from the magnetic sensor using a high-precision positioning fixture, and assembling the torque bracket after installing the magnetic assembly cage and the magnetic sensor cage after installing the magnetic sensor based on the monitored data. This includes:

[0015] (1) Adjust the Tb value on the high-precision positioning fixture so that the magnetic sensor on the magnetic sensor holder and the magnet group on the magnetic group holder reach a preset distance; wherein, the Tb value represents the distance between the horizontal plane of the magnetic sensor on the magnetic sensor holder and the magnet group on the magnetic group holder.

[0016] (2) Read the data of the magnetic sensor through the external data port on the high-precision positioning fixture, adjust the Ra value on the high-precision positioning fixture, and measure the data of the magnetic sensor under different Ra values; where Ra value represents the rotation angle between the magnetic sensor on the magnetic sensor holder and the horizontal plane of the magnet group on the magnetic group holder.

[0017] (3) Based on the data of the magnetic sensor measured under different Ra values, select the preset data of the magnetic sensor as the initial reading A0 of the torque component, and determine the data of the magnetic sensor under the maximum range Tmax torque load as the maximum reading Amax of the torque component.

[0018] (4) readjust the Ra value on the high-precision positioning fixture again so that the reading of the magnetic sensor reaches the initial reading A0. At this time, the magnetic sensor holder is welded to the torque bracket by resistance welding. The magnet group includes two magnets. After resistance welding, the N pole of one of the two magnets faces the working surface of the magnetic sensor, and the S pole of the other magnet faces the working surface of the magnetic sensor. The two magnets in the magnet group each have at least five faces in the same plane.

[0019] (5) Fix one end of the torque bracket on the torque assembly, apply the maximum range Tmax torque load to the other end of the torque bracket, and read the data of the magnetic sensor at the same time; keep the maximum range Tmax torque load, and use laser drilling to process the torque micro-adjustment hole on the torque bracket through the process hole on the magnetic sensor holder, so that the reading of the magnetic sensor is Amax at this time.

[0020] Preferably, the magnetic assembly holder is a circular structure, and the process of stamping the magnetic slot of the corresponding size on the magnetic assembly holder is to form a raised magnetic slot by stamping outward from one side edge of the magnetic assembly holder.

[0021] Preferably, the magnetic sensor holder is a circular structure, and the magnetic sensor mounting groove of the corresponding size is punched out on the magnetic sensor holder by punching inward on one side edge of the magnetic sensor holder to form a recessed magnetic sensor mounting groove.

[0022] Preferably, step 2 further includes stamping reinforcing ribs into the side wall of the magnetic sensor holder.

[0023] Preferably, the side wall of the magnetic sensor holder is provided with a positioning hole, and the step of fixing the magnetic sensor holder after the magnetic sensor is installed on the high-precision positioning fixture includes:

[0024] Open the positioning pin on the high-precision positioning fixture, place the magnetic sensor holder after installing the magnetic sensor on the high-precision positioning fixture, align the positioning hole of the magnetic sensor holder with the positioning pin on the high-precision positioning fixture, close the positioning pin, and lock the magnetic sensor holder.

[0025] Preferably, the torque bracket is composed of a large ring and a small ring connected axially, the magnetic assembly holder is nested and fixed with the small ring, and the magnetic sensor holder is nested and fixed with the large ring.

[0026] Preferably, the torque micro-adjustment hole is located on the small ring of the torque bracket.

[0027] This invention provides a method for manufacturing a torque assembly, which utilizes high-precision positioning fixtures for assembly, offering higher efficiency and reliability compared to traditional manual methods. During stress testing, the torque assembly manufactured using this invention only bears the repeated compression and tension of external torques on the torque support; the magnetic sensor holder and magnetic assembly holder are not directly subjected to external torsional loads. Furthermore, since the magnetic sensor holder and magnetic assembly holder are fixedly attached to the torque support, this method offers significantly better reliability compared to strain gauge patch measurement methods. Attached Figure Description

[0028] Figure 1 This is a flowchart of a method for manufacturing a torque component according to the present invention;

[0029] Figure 2 This is a first-view structural schematic diagram of the magnetic assembly cage of the present invention;

[0030] Figure 3 This is a second-view structural schematic diagram of the magnetic assembly cage of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the magnetic sensor holder of the present invention;

[0032] Figure 5 This is a schematic diagram of the high-precision positioning fixture of the present invention when the positioning pin is opened;

[0033] Figure 6 This is a schematic diagram of the high-precision positioning fixture of the present invention when the positioning pin is closed;

[0034] Figure 7 This is a schematic diagram of the torque bracket and magnetic sensor holder after assembly according to the present invention;

[0035] Figure 8 This is a schematic diagram of the torque support structure of the present invention;

[0036] Figure 9 This is an exploded view of the torque assembly of the present invention;

[0037] Figure 10 This is a schematic diagram of the torque component of the present invention.

[0038] In the diagram: 100, first internal gear ring; 200, magnetic assembly retainer; 201, magnet slot; 300, torque bracket; 301, torque micro-adjustment hole; 400, magnetic sensor retainer; 401, positioning hole; 402, magnetic sensor mounting slot; 403, reinforcing rib; 404, process hole; 500, second internal gear ring; 600, magnet assembly; 700, magnetic sensor; 800, high-precision positioning fixture; 801, positioning pin. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between; when a component is said to be "fixed" to another component, it can be directly fixed to the other component or it can be connected to a component in between.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0042] To address the problems of complex manufacturing processes and low reliability of torque components in existing technologies, such as... Figure 1 As shown, this embodiment provides a method for manufacturing a torque component, including the following steps:

[0043] Step 1: According to the shape and size of the magnet assembly 600, stamp out a magnet slot 201 of the corresponding size on the magnet assembly holder 200, and install the magnet assembly 600 in the magnet slot 201.

[0044] The magnetic retainer 200 is made of non-magnetic alloy. For example... Figure 2-3 As shown, for ease of installation, the magnetic assembly retainer 200 in this embodiment has a circular structure. The magnetic slot 201 of corresponding size can be stamped outwards from one edge of the magnetic assembly retainer 200 to form a raised magnetic slot 201 of corresponding size. Of course, without affecting the use of the torque assembly, the stamping position of the magnetic slot 201 can be adjusted according to the actual situation.

[0045] Step 2: According to the shape and size of the magnetic sensor 700, a magnetic sensor mounting groove 402 of the corresponding size is punched on the magnetic sensor holder 400, and the magnetic sensor 700 is fixed in the magnetic sensor mounting groove 402.

[0046] The magnetic sensor holder 400 is made of non-magnetic alloy. For example... Figure 4As shown, for ease of installation, the magnetic sensor holder 400 in this embodiment has a circular structure. The magnetic sensor mounting groove 402 of corresponding size can be stamped into the magnetic sensor holder 400 by stamping a recess of corresponding size inwards on one side edge of the magnetic sensor holder 400. Of course, without affecting the use of the torque assembly, the stamping position of the magnetic sensor mounting groove 402 can be adjusted according to the actual situation.

[0047] In addition, to improve the strength of the magnetic sensor holder 400, reinforcing ribs 403 can be stamped into the side wall of the magnetic sensor holder 400. The magnetic sensor holder 400 can be formed by stamping or casting, and for manufacturing process requirements, process holes 404 and positioning holes 401 are also provided on the side wall of the magnetic sensor holder 400.

[0048] Step 3: Secure the magnet assembly retainer 200, after installing the magnet assembly 600, to one end of the torque bracket 300. In practice, resistance welding can be used to fix the magnet assembly retainer 200, after installing and fixing the magnet assembly 600, to one end of the torque bracket 300.

[0049] Furthermore, to facilitate the use of the torque assembly, a first internal gear ring 100 and a second internal gear ring 500 can be fixed inside the torque bracket 300. The first internal gear ring 100 and the second internal gear ring 500 are located at opposite ends of the torque bracket 300. The torque bracket 300 is made of non-magnetic alloy, and the first internal gear ring 100 and the second internal gear ring 500 can be fixed to the torque bracket 300 by welding.

[0050] Step 4: Fix the torque bracket 300 after installing the magnetic assembly retainer 200 onto the tooling, and fix the magnetic sensor retainer 400 after installing the magnetic sensor 700 onto the high-precision positioning tooling 800. Monitor the data of the magnetic sensor through the high-precision positioning tooling 800, and assemble the torque bracket 300 after installing the magnetic assembly retainer 200 and the magnetic sensor retainer 400 after installing the magnetic sensor 700 according to the monitored magnetic sensor data, thus completing the fabrication of the torque assembly.

[0051] like Figure 5-6 As shown, since the side wall of the magnetic sensor holder 400 is provided with a positioning hole 401, the process of fixing the magnetic sensor holder 400 after installing the magnetic sensor 700 onto the high-precision positioning fixture 800 can be as follows: Open the positioning pin 801 on the high-precision positioning fixture 800, place the magnetic sensor holder 400 after installing the magnetic sensor 700 onto the high-precision positioning fixture 800, align the positioning hole 401 of the magnetic sensor holder 400 with the positioning pin 801 on the high-precision positioning fixture 800, close the positioning pin 801, and lock the magnetic sensor holder 400.

[0052] In this embodiment, both the tooling and the high-precision positioning tooling are conventional tooling. When assembling the torque bracket and the magnetic sensor holder using the high-precision positioning tooling, the high-precision positioning tooling can be automatically controlled by the software system.

[0053] The process involves monitoring the data from the magnetic sensor using a high-precision positioning fixture 800, and assembling the torque bracket 300 after installing the magnetic assembly holder 200 and the magnetic sensor holder 400 after installing the magnetic sensor 700 based on the monitored data. The specific steps are as follows:

[0054] (1) Adjust the Tb value on the high-precision positioning fixture 800 so that the magnetic sensor 700 on the magnetic sensor holder 400 and the magnet group 600 on the magnetic group holder 200 reach a preset distance; wherein, the Tb value represents the distance between the magnetic sensor 700 on the magnetic sensor holder 400 and the magnet group 600 on the magnetic group holder 200 on the horizontal plane.

[0055] (2) Read the data of the magnetic sensor 700 through the external data port on the high-precision positioning fixture 800, adjust the Ra value on the high-precision positioning fixture 800, and measure the data of the magnetic sensor 700 under different Ra values; wherein, the Ra value represents the rotation angle between the magnetic sensor 700 on the magnetic sensor holder 400 and the magnetic group 600 on the magnetic group holder 200 on the horizontal plane.

[0056] The magnet assembly 600 will form a linear magnetic field region near the working surface of the magnetic sensor 700. The data measured by the magnetic sensor 700 is linearly related to the rotation angle between the magnet assembly 600 and the magnetic sensor 700. For the same object, the torsional angle of the object is linearly related to the magnitude of the torque it is subjected to. Therefore, the sensor measurement data of this technical solution can reflect the magnitude of the torque on the elastic body.

[0057] (3) Based on the data of the magnetic sensor 700 measured under different Ra values, select the preset data of the magnetic sensor 700 as the initial reading A0 of the torque component, and determine the data of the magnetic sensor 700 under the maximum range Tmax torque load as the maximum reading Amax of the torque component.

[0058] In this embodiment, appropriate magnetic sensor readings are selected as the initial reading A0 and the reading Amax under the maximum range Tmax torque load of the torque component. A0 and Amax are fixed values ​​selected after being statistically analyzed based on the same type of torque component.

[0059] (4) Readjust the Ra value on the high-precision positioning fixture 800 until the reading of the magnetic sensor 700 reaches the initial reading A0. Then, weld the magnetic sensor holder 400 to the torque bracket 300 using resistance welding to achieve the desired result. Figure 7 As shown in the diagram. The magnet assembly 600 includes two magnets. After resistance welding, the N pole of one of the magnets faces the working surface of the magnetic sensor 700, and the S pole of the other magnet faces the working surface of the magnetic sensor 700. Furthermore, each of the two magnets in the magnet assembly 600 has at least five faces that are in the same plane.

[0060] (5) Fix one end of the torque bracket 300 on the torque assembly, apply the maximum range Tmax torque load to the other end of the torque bracket 300, and read the data of the magnetic sensor 700 at the same time; keep the maximum range Tmax torque load, and use laser drilling to process the torque micro-adjustment hole 301 on the torque bracket 300 through the process hole 404 on the magnetic sensor holder 400, so that the reading of the magnetic sensor is Amax at this time.

[0061] like Figure 8 As shown, for ease of installation during use, the torque bracket 300 in this embodiment consists of a large ring and a small ring connected axially. The magnetic assembly retainer 200 is nested and fixed to the small ring, and the magnetic sensor retainer 400 is nested and fixed to the large ring. Furthermore, the first internal gear ring 100 is fixed inside the small ring of the torque bracket 300, and the second internal gear ring 500 is fixed inside the large ring of the torque bracket 300.

[0062] When machining the torque micro-adjustment hole 301, the first internal gear ring 100 is fixed, force is applied to the second internal gear ring 500, and finally the torque micro-adjustment hole 301 is machined on the small ring of the torque bracket 300. After machining the torque micro-adjustment hole 301, the tooling and high-precision positioning tooling are opened, the torque assembly is taken out, and the manufacturing is completed. The manufactured torque assembly is as follows. Figure 9-10 As shown in the figure. This embodiment uses a software system to control a high-precision positioning fixture to complete the task automatically, which has higher efficiency and reliability compared to the traditional manual method.

[0063] After implementing the torque component manufacturing method of the present invention, the obtained torque component is as follows:

[0064] A torque assembly includes a torque bracket 300, a magnetic assembly holder 200, a magnetic sensor holder 400, a magnet assembly 600, and a magnetic sensor 700.

[0065] The magnetic assembly retainer 200 and the magnetic sensor retainer 400 are respectively sleeved and fixed at both ends of the torque bracket 300. When an external torque is applied to the torque bracket 300, only the torque bracket 300 bears the repeated compression and pulling of the external torque during the force process. The magnetic sensor retainer 400 and the magnetic assembly retainer 200 are not directly subjected to external torsional loads, so the reliability is higher.

[0066] The magnet assembly 600 is mounted on the magnet assembly holder 200, and the magnetic sensor 700 is mounted on the magnetic sensor holder 400. The magnet assembly 600 includes two magnets. The N pole of one of the magnets faces the working surface of the magnetic sensor, and the S pole of the other magnet faces the working surface of the magnetic sensor. Furthermore, each of the two magnets in the magnet assembly 600 has at least five faces that are in the same plane.

[0067] When the torque component is not subjected to an external torque, the magnet assembly 600 and the magnetic sensor 700 are arranged opposite each other and close to each other; when the torque component is subjected to an external torque, the magnet assembly 600 and the magnetic sensor 700 rotate axially, and a displacement difference occurs between them. Therefore, the measurement data of the magnetic sensor changes, and the magnitude of the external torque is obtained by monitoring this change.

[0068] The magnetic assembly retainer 200 has a circular structure and is made of non-magnetic alloy material, so the magnetic assembly retainer 200 can be directly sleeved and fixed outside the torque bracket 300. In order to facilitate the installation of the magnet assembly 600, one side edge of the magnetic assembly retainer 200 protrudes outward to form a magnet slot 201, and the magnet assembly 600 is installed in the magnet slot 201.

[0069] During the formation of the magnet slot 201, a magnet slot 201 of a suitable size can be stamped on the magnet assembly holder 200 according to the shape and size of the magnet assembly 600. Of course, other processes can also be used to obtain the magnet slot 201.

[0070] The magnetic sensor holder 400 has a circular structure and is made of non-magnetic alloy, so it can be directly sleeved and fixed to the outside of the torque bracket 300. To facilitate the installation of the magnetic sensor 700, one edge of the magnetic sensor holder 400 is recessed inward to form a magnetic sensor mounting groove 402, in which the magnetic sensor 700 is fixed.

[0071] The magnetic sensor holder 400 has reinforcing ribs 403 on its sidewalls to improve its strength. Furthermore, according to design and manufacturing requirements, the magnetic sensor holder 400 also has positioning holes 401 and process holes 404 on its sidewalls. The positioning holes 401 are used to fix the magnetic sensor holder 400 during the torque assembly manufacturing process, while the process holes 404 are used to avoid the laser drilling beam during the torque assembly manufacturing process, allowing the torque micro-adjustment holes 301 to be machined on the torque support 300 using the laser drilling process.

[0072] During the formation of the magnetic sensor mounting slot 402 and the reinforcing rib 403, a magnetic sensor mounting slot 402 of appropriate size can be stamped on the magnetic sensor holder 400 according to the shape and size of the magnetic sensor 700, and the reinforcing rib 403 can be stamped on the magnetic sensor holder 400 at the same time. Of course, other processes can also be used to obtain the magnetic sensor mounting slot 402 and the reinforcing rib 403.

[0073] The magnetic sensor and magnet group are preferably set as one set. If necessary, multiple sets can also be set, with multiple sets distributed in a ring along the torque support 300.

[0074] The torque bracket 300 is made of non-magnetic alloy and consists of a large ring and a small ring connected axially. The magnetic assembly retainer 200 is fixed to the small ring by resistance welding, and the magnetic sensor retainer 400 is fixed to the large ring by resistance welding. The small ring of the torque bracket 300 is provided with a torque micro-adjustment hole 301 for fine-tuning the torque.

[0075] A first internal gear ring 100 and a second internal gear ring 500 are fixed inside the torque bracket 300. The first internal gear ring 100 and the second internal gear ring 500 are located at both ends of the torque bracket 300, respectively. The first internal gear ring 100 and the second internal gear ring 500 are fixed to the torque bracket 300 by welding.

[0076] In this embodiment, the first internal gear ring 100 is fixed inside the small ring of the torque bracket 300, and the second internal gear ring 500 is fixed inside the large ring of the torque bracket 300. Therefore, the inner diameter of the first internal gear ring 100 is smaller than that of the second internal gear ring 500. Similarly, the diameter of the magnetic assembly holder 200 is also smaller than that of the magnetic sensor holder 400. The magnetic assembly holder 200 and the magnetic sensor holder 400 are mounted on the torque bracket 300, and they are axially adjacent or overlap.

[0077] In this embodiment, the torque assembly fixes the external component to be detected to the first internal gear ring 100 and the second internal gear ring 500 respectively. When the external component is displaced, an external torque is applied to the torque support 300. The torque support 300 deforms under the external torque, causing the magnet group 600 and the magnetic sensor 700 to rotate axially. A displacement difference occurs between them, and the measurement data of the magnetic sensor changes. By monitoring this change, the magnitude of the external torque is obtained, achieving highly reliable measurement that is unaffected by environments such as high temperature, high humidity, oil, and vibration.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A method for manufacturing a torque assembly, characterized in that, The method for manufacturing the torque component includes the following steps: Step 1: According to the shape and size of the magnet assembly, stamp out the corresponding size magnet slots on the magnet assembly holder, and install the magnet assembly in the magnet slots; Step 2: According to the shape and size of the magnetic sensor, punch out a magnetic sensor mounting slot of the corresponding size on the magnetic sensor holder, and fix the magnetic sensor in the magnetic sensor mounting slot; Step 3: Secure the magnet assembly retainer, after installing the magnet assembly, to one end of the torque bracket outside; Step 4: Fix the torque bracket after installing the magnetic assembly cage onto the tooling, and fix the magnetic sensor cage after installing the magnetic sensor onto the high-precision positioning tooling. Monitor the data of the magnetic sensor through the high-precision positioning tooling, and assemble the torque bracket after installing the magnetic assembly cage and the magnetic sensor cage after installing the magnetic sensor according to the monitored magnetic sensor data to complete the torque assembly fabrication. Step 4, which involves monitoring the data from the magnetic sensor using a high-precision positioning fixture and assembling the torque bracket after installing the magnetic assembly cage and the magnetic sensor cage after installing the magnetic sensor based on the monitored data, includes: (1) Adjust the Tb value on the high-precision positioning fixture so that the magnetic sensor on the magnetic sensor holder and the magnet group on the magnetic group holder reach the preset distance; wherein, the Tb value represents the distance between the horizontal plane of the magnetic sensor on the magnetic sensor holder and the magnet group on the magnetic group holder. (2) Read the data of the magnetic sensor through the external data port on the high-precision positioning fixture, adjust the Ra value on the high-precision positioning fixture, and measure the data of the magnetic sensor under different Ra values; where Ra value represents the rotation angle between the magnetic sensor on the magnetic sensor holder and the horizontal plane of the magnet group on the magnetic group holder. (3) Based on the data of the magnetic sensor measured under different Ra values, select the preset data of the magnetic sensor as the initial reading A0 of the torque component, and determine the data of the magnetic sensor under the maximum range Tmax torque load as the maximum reading Amax of the torque component. (4) Adjust the Ra value on the high-precision positioning fixture again so that the reading of the magnetic sensor reaches the initial reading A0. At this time, the magnetic sensor holder is welded to the torque bracket by resistance welding. The magnet group includes two magnets. After resistance welding, the N pole of one of the two magnets faces the working surface of the magnetic sensor, and the S pole of the other magnet faces the working surface of the magnetic sensor. The two magnets in the magnet group each have at least five faces in the same plane. (5) Fix one end of the torque bracket on the torque assembly, apply the maximum range Tmax torque load to the other end of the torque bracket, and read the data of the magnetic sensor at the same time; keep the maximum range Tmax torque load, and use laser drilling to process the torque micro-adjustment hole on the torque bracket through the process hole on the magnetic sensor holder, so that the reading of the magnetic sensor is Amax at this time.

2. The method for manufacturing a torque assembly according to claim 1, characterized in that, Step 3 further includes fixing a first internal gear ring and a second internal gear ring inside the torque bracket, wherein the first internal gear ring and the second internal gear ring are located at both ends of the torque bracket, respectively.

3. The method for manufacturing a torque assembly according to claim 1, characterized in that, The magnetic assembly holder, magnetic sensor holder, and torque bracket are all made of non-magnetic alloy.

4. The method for manufacturing a torque assembly according to claim 1, characterized in that, The magnetic assembly retainer has a circular structure, and the process of stamping a magnet slot of the corresponding size on the magnetic assembly retainer involves stamping a raised magnet slot outward from one side edge of the magnetic assembly retainer.

5. The method for manufacturing a torque assembly according to claim 1, characterized in that, The magnetic sensor holder is a circular structure, and the magnetic sensor mounting groove of the corresponding size is punched out on the magnetic sensor holder by punching inward on one side edge of the magnetic sensor holder to form a recessed magnetic sensor mounting groove.

6. The method for manufacturing a torque assembly according to claim 1, characterized in that, Step 2 also includes stamping reinforcing ribs into the side wall of the magnetic sensor holder.

7. The method for manufacturing a torque assembly according to claim 1, characterized in that, The magnetic sensor holder has positioning holes on its side wall. The process of fixing the magnetic sensor holder, after the magnetic sensor is installed, onto a high-precision positioning fixture includes: Open the positioning pin on the high-precision positioning fixture, place the magnetic sensor holder after installing the magnetic sensor on the high-precision positioning fixture, align the positioning hole of the magnetic sensor holder with the positioning pin on the high-precision positioning fixture, close the positioning pin, and lock the magnetic sensor holder.

8. The method for manufacturing a torque assembly according to claim 1, characterized in that, The torque bracket consists of a large ring and a small ring connected axially. The magnetic assembly holder is nested and fixed to the small ring, and the magnetic sensor holder is nested and fixed to the large ring.

9. The method for manufacturing a torque component according to claim 8, characterized in that, The torque micro-adjustment hole is located on the small ring of the torque bracket.

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