A machining forming process for a precision thin-walled gear

Abstract

The application relates to a machining forming process of a precision thin-wall gear, which comprises the following steps: S1, cutting machining; and S2, correction. According to the application, the gear center, the spoke with the minimum deviation and the tooth tip are positioned and a coordinate system is established, and then each spoke is finely machined based on the coordinate system, so that the deviation of each spoke in the direction of the corresponding tooth tip is effectively reduced, and the yield of products is improved; in addition, the correction of the spoke and the tooth tip is carried out before the gear product is finished, so that the operation is simple and convenient, time and labor are saved, and the production efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of precision machining technology, specifically relating to a machining process for precision thin-walled gears. Background Technology

[0002] In the machining process of precision thin-walled gears, the gear product is usually obtained by machining multiple tooth tips that are distributed in a ring at intervals on the edge of the blank and machining multiple spokes that are distributed at intervals around the center line of the blank in the middle of the blank.

[0003] However, the manufacturing process requires precision in the orientation of the spokes and tooth tips that are closest to each other on the gear. In actual production, when using existing processing techniques to manufacture gears, the orientation of the tooth tips and spokes is randomly processed. The probability of a deviation between the center line of the corresponding tooth tip and the center line of the spoke is relatively high, resulting in products that cannot meet the precision requirements and a low yield rate. In addition, although the spokes can be corrected by torsion after the product is manufactured, this method requires too much torque, is time-consuming and labor-intensive, and results in a high scrap rate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a brand-new machining and forming process for precision thin-walled gears.

[0005] To solve the above technical problems, the present invention adopts the following technical solution:

[0006] A machining process for precision thin-walled gears, comprising the following steps:

[0007] S1, Cutting process

[0008] The blank is clamped onto a special fixture, and then, according to the drawing requirements, a ring-shaped thin-walled structure is machined into the circumference of the blank to the design size; multiple spoke grooves are machined into the bottom of the blank with a ring-shaped spacing and leaving machining allowance, wherein each two adjacent spoke grooves form a spoke; multiple tooth tips are machined into the top edge of the ring-shaped thin-walled structure with a ring-shaped spacing to the design size, and a semi-finished product is obtained after the above processing is completed.

[0009] S2, Correction

[0010] a) Place the semi-finished product on the horizontal reference surface from the corresponding end face and locate the center of the semi-finished product;

[0011] b) Inspect and determine the spokes and tooth tips with the smallest included angle between the centerlines of the semi-finished product, with the tooth tip being the zero point tooth tip;

[0012] c) Press and position the zero-point tooth tip in the radial direction of the semi-finished product, and position the spokes corresponding to the zero-point tooth tip in the circumferential direction of the semi-finished product. Establish a coordinate system based on the horizontal reference plane, the center of the semi-finished product, and the zero-point tooth tip. Then, process each spoke one by one based on the coordinate system so that the center line of each spoke coincides with the center line of the corresponding tooth tip, complete the correction of the spokes and tooth tips, and obtain the thin-walled gear product.

[0013] Preferably, in step S1, according to the drawing requirements, a central inner hole is machined to the designed size at the bottom center of the blank, and when machining the tooth tips, the central inner hole and bottom surface of the blank are used as references for cutting each tooth individually. This facilitates center positioning of the blank when machining the tooth tips and improves the positional accuracy of the tooth cutting.

[0014] Preferably, the clamping device used for machining the tooth tip includes a clamping seat forming a horizontal reference surface on its top surface, a positioning mandrel disposed on the top surface of the clamping seat and matching the central inner hole, a support sleeve disposed on the top surface of the clamping seat and supporting the outer wall of the annular thin-walled structure, and a pressure plate for pressing the blank onto the clamping seat. Here, the clamping seat and pressure plate achieve vertical clamping and positioning of the blank, while the positioning mandrel and support sleeve form radial clamping, positioning, and support, thereby satisfying the cutting accuracy while significantly reducing the probability of deformation of the annular thin-walled structure.

[0015] Preferably, in step S2, the calibration device used includes:

[0016] The base has a reference surface, and the semi-finished product is placed on the reference surface from the corresponding end face;

[0017] A center positioning component, which is set on a reference surface and used to position the center of the semi-finished product;

[0018] A tooth tip positioning component is disposed on a reference surface and has a meshing portion that matches the zero-point tooth tip;

[0019] The spoke positioning component is set on the reference surface and located between the center positioning component and the tooth tip positioning component. The spoke positioning component has a positioning channel for a single spoke. When the semi-finished product is placed on the reference surface and positioned at the center, the zero-point tooth tip meshes with the meshing part, and the corresponding spoke passes through the positioning channel.

[0020] The machining component is used to sequentially machine based on the zero-point tooth tip and drive the center line of each spoke to coincide with the center line of the corresponding tooth tip.

[0021] Preferably, the center positioning component includes a center module that inserts into the center of the semi-finished product, and connectors for fixing the center module to the base, wherein there are multiple connectors arranged side-by-side at intervals along the radial direction of the semi-finished product; a center hole is formed on the base, and the center positioning component also includes a center shaft inserted into the center hole, with the center module sleeved on the center shaft. This facilitates the rapid installation and positioning of the center module.

[0022] Preferably, the tooth tip positioning component includes a positioning post extending radially along the semi-finished product and an adjusting member for driving the positioning post to adjust towards or away from the tooth tip, wherein one end of the positioning post forms an engagement portion.

[0023] Furthermore, a groove is formed on the base, and the tooth tip positioning component also includes an insert that engages with the groove. The insert has a guide channel extending radially along the semi-finished product. The positioning pin is inserted into the guide channel and adjusted along the guide channel towards or away from the zero-point tooth tip. Here, the adjustment of the positioning pin via the guide channel provides guidance, ensuring precise adjustment of the positioning pin. Simultaneously, it ensures tight engagement between the positioning pin and the tooth tip, preventing deformation or positional shifts during the correction process and improving correction accuracy.

[0024] Preferably, the spoke positioning component is detachably connected to the base; the base also has insertion slots arranged side-by-side at intervals along the corresponding spoke width direction. The spoke positioning component includes a U-shaped insertion module, wherein both ends of the U-shaped insertion module are inserted into two corresponding insertion slots, and a positioning channel is formed between the inner wall of the U-shaped insertion module and the reference surface. This facilitates the processing and alignment of the spokes located within the positioning channel, and the disassembly and assembly operations are simple and convenient.

[0025] Preferably, the base is also provided with a pressure block for pressing the semi-finished product onto the reference surface.

[0026] Specifically, pressure blocks are placed on the edge of the semi-finished product, and multiple pressure blocks are distributed in a ring-shaped interval around the center line of the semi-finished product. This ensures that the gear remains stable during processing and avoids positional displacement.

[0027] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0028] When machining gears using existing processes, the directions of the tooth tips and spokes are randomly machined, resulting in a high probability of deviation between the center lines of the tooth tips and spokes. This leads to products failing to meet precision requirements and a low yield rate. Furthermore, while the spokes can be corrected by torsion after machining, this method requires excessive torque, is time-consuming and labor-intensive, and results in a high scrap rate. This application, however, provides a comprehensive design for the machining process of precision thin-walled gears, cleverly addressing the shortcomings and defects of existing technologies. This machining process involves first clamping the blank onto a dedicated fixture, then machining a ring-shaped thin-walled structure to the designed dimensions circumferentially according to the drawings. Finally, multiple annularly spaced spoke grooves are machined at the bottom of the blank, leaving machining allowances. The process involves machining multiple tooth tips at annular intervals to the designed dimensions on the top edge of the annular thin-walled structure, and obtaining a semi-finished product after the above machining is completed. The semi-finished product is then placed on a horizontal reference surface from its corresponding end face, and its center is positioned. The spoke and tooth tip with the smallest included angle between the centerlines of the semi-finished product are inspected and determined, with this tooth tip serving as the zero-point tooth tip. The zero-point tooth tip is pressed and positioned radially on the semi-finished product, and the spoke corresponding to the zero-point tooth tip is positioned circumferentially on the semi-finished product. A coordinate system is established using the horizontal reference surface, the center of the semi-finished product, and the zero-point tooth tip as references. Each spoke is then machined sequentially based on this coordinate system so that the centerline of each spoke coincides with the centerline of its corresponding tooth tip, thus completing the correction of the spokes and tooth tips and obtaining the thin-walled gear product. Therefore, compared with the prior art, the present invention, on the one hand, effectively reduces the deviation between each spoke and the corresponding tooth tip by positioning the gear center, the spokes with the smallest deviation and establishing a coordinate system, and then performing precision machining on each spoke based on the coordinate system, thereby improving the yield rate of the product; on the other hand, by correcting the spokes and tooth tips before the gear is finished, the operation is simple, convenient, time-saving and labor-saving, which is conducive to improving production efficiency. Attached Figure Description

[0029] Figure 1 This is a top view schematic diagram of the clamping device of the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of cross-section along line I-I;

[0031] Figure 3 This is a top view schematic diagram of the correction device of the present invention;

[0032] Figure 4 This is a front view schematic diagram of the correction device of the present invention;

[0033] Figure 5 for Figure 3 Top view of the central base;

[0034] Figure 6 for Figure 3 Front view of the base;

[0035] Figure 7 for Figure 3 Enlarged schematic diagram of a local part of the structure;

[0036] Figure 8 for Figure 3 Enlarged left-side view of the U-shaped plug-in module;

[0037] Wherein: A, clamping device; A0, clamping seat; A1, positioning spindle; A2, support sleeve; A3, pressure plate;

[0038] B. Correction device; 1. Base; 10. Pressure block; m. Reference surface; k0. Center hole; c0. Slot; c1. Insertion slot; 2. Center positioning component; 20. Center module; 21. Connector; 22. Center shaft; 3. Tooth tip positioning component; 30. Positioning pin; b. Meshing part; 31. Adjusting component; 32. Insert; 320. Guide channel; 4. Wheel spoke positioning component; 40. U-shaped insertion module; t. Positioning channel;

[0039] C, Gear; C0, Annular thin-walled structure; C1, Tooth tip; C2, Spoke; C3, Central inner hole. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0045] like Figures 1 to 8 As shown, the precision thin-walled gear processing technology involved in this embodiment uses processing equipment including clamping device A and correction device B. The precision thin-walled gear C in this embodiment includes an annular thin-walled structure C0, multiple tooth tips C1 and multiple spokes C2 arranged on the annular thin-walled structure C0 and distributed at intervals around its own center line, and a central inner hole C3 is formed at the bottom center of the gear C.

[0046] Specifically, the clamping device A includes a clamping seat A0 whose top surface forms a horizontal reference surface, a positioning mandrel A1 disposed on the top surface of the clamping seat A0 and matching the central inner hole C3, a support sleeve A2 disposed on the top surface of the clamping seat A0 and supporting the outer wall of the annular thin-walled structure C0, and a pressure plate A3 for pressing the blank onto the clamping seat A0. Here, the clamping seat and pressure plate achieve vertical clamping and positioning of the blank, while the positioning mandrel and support sleeve form radial clamping, positioning, and support, thereby satisfying the cutting accuracy while significantly reducing the probability of deformation of the annular thin-walled structure.

[0047] In this example, the calibration device B includes a base 1, a center positioning component 2, a tooth tip positioning component 3, and a spoke positioning component 4.

[0048] Specifically, the base 1 is set horizontally, and the top surface of the base 1 forms a reference surface m. The semi-finished gear C is placed on the reference surface m from one side.

[0049] For ease of implementation, the base 1 is also provided with an L-shaped pressure block 10 for pressing the gear C onto the reference surface m. The pressure block 10 is pressed against the edge of the gear C and fixed to the base 1 by bolts. There are multiple pressure blocks 10, which are distributed in a ring at intervals around the center line of the gear C. This ensures that the gear remains stable during processing and avoids positional displacement.

[0050] In this example, the center positioning component 2 is set on the reference plane m and is used to position the center of the gear C.

[0051] In some specific embodiments, the center positioning component 2 includes a center module 20 that is inserted into the middle of the gear C, and a connector 21 for fixing the center module 20 to the base 1, wherein there are multiple connectors 21 and they are arranged side by side at intervals along the radial direction of the gear C.

[0052] Furthermore, a central hole k0 is formed on the base 1, and the central positioning component 2 also includes a central shaft 22 inserted into the central hole k0, with the central module 20 sleeved on the central shaft 22. This facilitates the quick installation and positioning of the central module.

[0053] In this example, the tooth tip positioning component 3 is disposed on the reference surface m and located outside the gear C, wherein the tooth tip positioning component 3 has a meshing portion b that matches the individual tooth tip C1.

[0054] In some specific embodiments, the tooth tip positioning component 3 includes a positioning post 30 extending radially along the gear C and an adjusting member 31 for driving the positioning post 30 to adjust towards or away from the tooth tip C1, wherein one end of the positioning post 30 forms an engagement portion b; the adjusting member 31 is an indexing pin or other adjusting part.

[0055] Specifically, the base 1 has a groove c0, and the tooth tip positioning component 3 also includes an insert 32 that engages with the groove c0. The insert 32 has a guide channel 320 extending radially along the gear C. The positioning pin 30 is inserted into the guide channel 320 and adjusted along the guide channel 320 towards or away from the tooth tip C1. Here, the adjustment of the positioning pin via the guide channel provides guidance, ensuring precise adjustment of the positioning pin. Simultaneously, it ensures tight meshing between the positioning pin and the tooth tip, preventing deformation or positional shifts during the correction process and improving correction accuracy.

[0056] In this example, the spoke positioning component 4 is set on the reference plane m and located between the center positioning component 2 and the tooth tip positioning component 3. The spoke positioning component 4 has a positioning channel t for a single spoke. When any spoke C2 passes through the positioning channel t, the corresponding tooth tip C1 simultaneously meshes with the meshing part b and forms a zero point.

[0057] To further facilitate implementation, when gear C is placed on the reference plane m and centered, the spokes C2 and tooth tips C1 with the smallest centerline angle on gear C pass through the positioning channel t and mesh with the meshing part b, respectively. Here, using the spokes and tooth tips with the smallest centerline angle for positioning and as the machining reference for each spoke can effectively reduce the workload while achieving correction.

[0058] In some specific embodiments, the spoke positioning component 4 is detachably connected to the base 1.

[0059] Meanwhile, the base 1 also has insertion slots c1 arranged side by side at intervals along the width direction of the corresponding spokes C2. The spoke positioning component 4 includes a U-shaped insertion module 40, wherein the two ends of the U-shaped insertion module 40 are inserted into the two insertion slots c1 respectively, and a positioning channel t is formed between the inner wall of the U-shaped insertion module 40 and the reference surface. Here, the disassembly and assembly operations are simple and convenient.

[0060] Furthermore, the machining component is used to sequentially machine based on the aforementioned zero-point tooth tips and drive the center line of each spoke C2 to coincide with the center line of the corresponding tooth tip C1. The machining component in this embodiment can be any conventional machining center, which is a conventional technology and is clearly feasible without further explanation.

[0061] Therefore, the machining process for the precision thin-walled gear in this embodiment includes the following steps:

[0062] S1, Cutting process

[0063] The blank is clamped onto a special fixture, and then, according to the drawing requirements, a ring-shaped thin-walled structure is machined into the circumference of the blank to the design dimensions; multiple wheel spoke grooves are machined into the bottom of the blank at intervals, leaving machining allowance, wherein each pair of adjacent wheel spoke grooves forms a wheel spoke; a central inner hole is machined into the center of the bottom of the blank to the design dimensions; using the central inner hole and bottom surface of the blank as a reference, multiple tooth tips are machined into the top edge of the ring-shaped thin-walled structure at intervals to the design dimensions, and a semi-finished product is obtained after completing the above machining.

[0064] S2, Correction

[0065] a) Place the semi-finished product on the horizontal reference surface from the corresponding end face and locate the center of the semi-finished product;

[0066] b) Inspect and determine the spokes and tooth tips with the smallest included angle between the centerlines of the semi-finished product, with the tooth tip being the zero point tooth tip;

[0067] c) Press and position the zero-point tooth tip in the radial direction of the semi-finished product, and position the spokes corresponding to the zero-point tooth tip in the circumferential direction of the semi-finished product. Establish a coordinate system based on the horizontal reference plane, the center of the semi-finished product, and the zero-point tooth tip. Then, process each spoke one by one based on the coordinate system so that the center line of each spoke coincides with the center line of the corresponding tooth tip, complete the correction of the spokes and tooth tips, and obtain the thin-walled gear product.

[0068] In summary, after adopting this processing and forming process, firstly, the blank is clamped onto a special fixture. Then, according to the drawing requirements, a ring-shaped thin-walled structure is machined circumferentially on the blank to the design dimensions. Multiple annularly spaced spoke grooves are machined at the bottom of the blank, leaving machining allowance, with each adjacent two spoke grooves forming a spoke. Multiple annularly spaced tooth tips are machined at the top edge of the ring-shaped thin-walled structure to the design dimensions. After completing the above processing, a semi-finished product is obtained. Then, the semi-finished product is placed on a horizontal reference surface from the corresponding end face. The center of the semi-finished product is located; the spokes and tooth tips with the smallest included angle of the centerline of the semi-finished product are inspected and determined, with the tooth tip being the zero point tooth tip; the zero point tooth tip is pressed and positioned radially on the semi-finished product, and the spokes corresponding to the zero point tooth tip are positioned circumferentially on the semi-finished product. A coordinate system is established with the horizontal reference plane, the center of the semi-finished product, and the zero point tooth tip as references. Then, each spoke is machined one by one based on the coordinate system so that the centerline of each spoke coincides with the centerline of the corresponding tooth tip, thus completing the correction of the spokes and tooth tips and obtaining the thin-walled gear product. Therefore, compared with the prior art, this invention has several advantages. First, by positioning the gear center, the spokes with the smallest deviation, and the tooth tips and establishing a coordinate system, and then precision machining each spoke based on this coordinate system, it effectively reduces the deviation between each spoke and the corresponding tooth tip, thus improving the product yield. Second, by correcting the spokes and tooth tips before the gear is finished, the operation is simple, convenient, time-saving, and labor-saving, which helps to improve production efficiency. Third, by using the spokes and tooth tips with the smallest center angle for positioning and as the machining reference for each spoke, it can effectively reduce the workload while achieving correction. Fourth, by using the guide channel to adjust the positioning column to form a guide, it ensures the precise adjustment of the positioning column and ensures that the positioning column and the tooth tip are tightly meshed, avoiding deformation or positional shift during correction processing and improving correction accuracy.

[0069] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A machining process for precision thin-walled gears, characterized in that, The molding process includes the following steps: S1, Cutting process The blank is clamped onto a special fixture, and then, according to the drawing requirements, a ring-shaped thin-walled structure is machined into the circumference of the blank to the design size; multiple spoke grooves are machined into the bottom of the blank with a ring-shaped spacing and leaving machining allowance, wherein each two adjacent spoke grooves form a spoke; multiple tooth tips are machined into the top edge of the ring-shaped thin-walled structure with a ring-shaped spacing to the design size, and a semi-finished product is obtained after the above processing is completed. S2, Correction a) Place the semi-finished product on the horizontal reference surface from the corresponding end face, and locate the center of the semi-finished product; b) Inspect and determine the spokes and tooth tips with the smallest included angle between the centerlines of the semi-finished product, with the tooth tip being the zero point tooth tip; c) Press and position the zero-point tooth tip in the radial direction of the semi-finished product, and position the spokes corresponding to the zero-point tooth tip in the circumferential direction of the semi-finished product. Establish a coordinate system based on the horizontal reference plane, the center of the semi-finished product, and the zero-point tooth tip. Then, process each spoke one by one based on the coordinate system so that the center line of each spoke coincides with the center line of the corresponding tooth tip, thereby completing the correction of the spokes and tooth tips and obtaining a thin-walled gear product.

2. The machining and forming process of the precision thin-walled gear according to claim 1, characterized in that, In S1, according to the drawing requirements, the center inner hole at the bottom center of the blank is machined to the design size, and when machining the tooth tip, the center inner hole and bottom surface of the blank are used as references to cut the teeth one by one.

3. The machining and forming process of precision thin-walled gears according to claim 2, characterized in that, The clamping device used for machining tooth tips includes a clamping seat forming a horizontal reference surface on its top surface, a positioning mandrel disposed on the top surface of the clamping seat and matching the central inner hole, a support sleeve disposed on the top surface of the clamping seat and supporting the outer wall of the annular thin-walled structure, and a pressure plate for pressing the blank onto the clamping seat.

4. The machining and forming process of the precision thin-walled gear according to claim 1, characterized in that, In step S2, the calibration device used includes: A base having a reference surface, wherein the semi-finished product is placed on the reference surface from its corresponding end face; A center positioning component is disposed on the reference surface and used to position the center of the semi-finished product; A tooth tip positioning component is disposed on the reference surface and has a meshing portion that matches the zero-point tooth tip; A spoke positioning component is disposed on the reference surface and located between the center positioning component and the tooth tip positioning component. A positioning channel for a single spoke is formed on the spoke positioning component. When the semi-finished product is placed on the reference surface and centered, the zero-point tooth tip meshes with the meshing part, and the corresponding spoke passes through the positioning channel. A machining component, used to sequentially machine based on the zero-point tooth tip and drive the center line of each spoke to coincide with the center line of the corresponding tooth tip.

5. The machining and forming process of the precision thin-walled gear according to claim 4, characterized in that, The center positioning component includes a center module that is inserted into the middle of the semi-finished product, and a connector for fixing the center module to the base. The connectors are multiple and arranged side by side at intervals along the radial direction of the semi-finished product. A center hole is formed on the base. The center positioning component also includes a center shaft inserted into the center hole, and the center module is sleeved on the center shaft.

6. The machining and forming process of the precision thin-walled gear according to claim 4, characterized in that, The tooth tip positioning component includes a positioning post extending radially along the semi-finished product and an adjusting member for driving the positioning post to adjust towards or away from the tooth tip, wherein one end of the positioning post forms the engagement portion.

7. The machining and forming process of the precision thin-walled gear according to claim 6, characterized in that, The base has a groove, and the tooth tip positioning component also includes an insert that engages with the groove. The insert has a guide channel that extends radially along the semi-finished product. The positioning post is inserted into the guide channel and is adjusted along the guide channel toward or away from the zero-point tooth tip.

8. The machining and forming process of the precision thin-walled gear according to claim 4, characterized in that, The spoke positioning component is detachably connected to the base; the base is also formed with insertion slots arranged side by side at intervals along the corresponding spoke width direction. The spoke positioning component includes a U-shaped insertion module, wherein the two ends of the U-shaped insertion module are inserted into the two insertion slots respectively, and the positioning channel is formed between the inner wall of the U-shaped insertion module and the reference surface.

9. The machining and forming process of the precision thin-walled gear according to claim 4, characterized in that, The base is also provided with a pressure block for pressing the semi-finished product onto the reference surface.

10. The machining and forming process of the precision thin-walled gear according to claim 9, characterized in that, The pressing blocks are pressed onto the edge of the semi-finished product, and there are multiple pressing blocks that are distributed in a ring at intervals around the center line of the semi-finished product.

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