Transmission assembly, machining method of bevel gear shaft, slewing mechanism and operation machine

Abstract

The invention belongs to the technical field of machining technologies, and particularly relates to a transmission assembly, a machining method of a bevel gear shaft, a swing mechanism and an operation machine.The transmission assembly comprises the bevel gear shaft, the bevel gear shaft is provided with a bevel gear section, a bearing connecting section and a main shaft section which are sequentially connected in the axial direction and are coaxial, and the main shaft section is sleeved with a shaft sleeve; the bevel gear section is located at the end of the bevel gear shaft, a shaft shoulder wall is arranged at the end, facing the bearing connecting section, of the bevel gear section, and a corner transition structure is arranged at the joint of the shaft shoulder wall and the bearing connecting section. The bearing is coaxially arranged on the periphery of the bearing connecting section in a sleeving manner; and the gasket is arranged on the bearing connecting section in a sleeving mode, the gasket and the shaft sleeve abut against the end faces of the two ends of the bearing correspondingly in the axial direction so that axial limiting of the bearing can be achieved, and the bevel gear shaft of the transmission assembly is higher in structural strength and more efficient in machining.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of machining process, and particularly relates to a transmission assembly, a machining method of a bevel gear shaft, a rotary mechanism and a working machine. BACKGROUND

[0002] In the prior art, the end of the bevel gear shaft of a tractor is usually provided with a bearing connecting section and a gear section. The precision requirement of the bearing connecting section is high, and after machining, grinding is still needed to make the precision of the bearing connecting section meet the requirement of installing the gear. In order to make the grinding wheel smoothly exit after grinding is completed, a grinding wheel overtravel groove is usually arranged on the bearing connecting section to facilitate the exit of the grinding wheel, and the precision requirement of the shaft shoulder part can also be ensured.

[0003] However, the existence of the grinding wheel overtravel groove will cause a structural mutation of the bevel gear shaft, and easily cause stress concentration to affect the service life of the bevel gear shaft. If a round corner is used to replace the grinding wheel overtravel groove, the bearing will move towards the shaft shoulder part during operation, and the bearing operation will be unstable. SUMMARY

[0004] The purpose of the present application is to provide a transmission assembly, a machining method of a bevel gear shaft, a rotary mechanism and a working machine to solve the technical problem of the structural mutation and low service life of the bevel gear shaft caused by the need to arrange a grinding wheel overtravel groove in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides a transmission assembly in one aspect, which comprises: a bevel gear shaft having a bevel gear section, a bearing connecting section and a main shaft section connected in sequence along an axial direction and coaxially, the main shaft section being sleeved with a shaft sleeve, the bevel gear section being located at an end of the bevel gear shaft, an end of the bevel gear section towards the bearing connecting section being provided with a shaft shoulder wall, a corner transition structure being arranged at a connection between the shaft shoulder wall and the bearing connecting section; a bearing being coaxially sleeved on an outer periphery of the bearing connecting section; a gasket being sleeved on the bearing connecting section, the gasket and the shaft sleeve abutting on end faces of two ends of the bearing along the axial direction to realize axial positioning of the bearing.

[0006] In some embodiments, the gasket has a first side wall, a second side wall opposite to the first side wall, an outer peripheral wall and an inner peripheral wall, a chamfer surface being formed between the inner peripheral wall and the second side wall, the chamfer surface and the inner peripheral wall of the corner transition structure having a gap therebetween, a top edge of the chamfer surface being in abutment with the shaft shoulder wall, and a bottom edge of the chamfer surface being in abutment with the bearing connecting section.

[0007] In some embodiments, the gasket comprises a base body and a wear-resistant layer coated on the base body, and the first side wall and the second side wall both have the wear-resistant layer.

[0008] In some implementations, the corner transition structure is rounded, and the radius of the rounding is greater than 3mm.

[0009] In some embodiments, the shoulder wall and the outer periphery of the bearing connection section form an obtuse angle, and the side of the gasket facing the shoulder wall fits against the shoulder wall.

[0010] The second aspect of this application provides a method for machining a bevel gear shaft, which is used to machine the aforementioned bevel gear shaft. The machining method includes the following steps: machining the bearing connecting section and the shaft shoulder wall, and cutting the connection between the shaft shoulder wall and the bearing connecting section into a corner transition structure; grinding the bearing connecting section and the shaft shoulder wall with a grinding wheel; and heat treating the bevel gear shaft.

[0011] In some embodiments, the steps of grinding the bearing connection section and the shoulder wall with a grinding wheel include: grinding the bearing connection section axially; performing a retraction operation using an arc retraction path when grinding to the corner transition structure; and grinding the shoulder wall radially.

[0012] In some embodiments, the processing method further includes the following steps: after grinding is completed, determining the size of the edge radius of the grinding wheel; if the edge radius is greater than a preset value, replacing the grinding wheel.

[0013] A third aspect of this application provides a rotary mechanism, including the aforementioned transmission components.

[0014] The fourth aspect of this application provides a working machine, including the aforementioned rotary mechanism.

[0015] In the above technical solution, the transmission component includes a bevel gear shaft, bearings, shims, and bushings. The bevel gear shaft has a bevel gear segment, a bearing connecting segment, and a main shaft segment that are connected and coaxially along the axial direction. The main shaft segment is fitted with a bushing. The bevel gear segment is located at the end of the bevel gear shaft. A shoulder wall is provided at the end of the bevel gear segment facing the bearing connecting segment. The shoulder wall is the part on the bevel gear shaft where the cross-sectional dimensions change. A corner transition structure is provided at the connection between the shoulder wall and the bearing connecting segment. This corner transition structure is used to replace the grinding wheel overrun groove commonly used in the prior art. The bearing is coaxially fitted on the outer periphery of the bearing connecting segment. The shim is fitted on the bearing connecting segment. The shim and the bushing cooperate to axially limit the bearing. The side away from the bearing abuts against the shoulder wall. Using the aforementioned bevel gear shaft eliminates the need for grinding wheel runout grooves on the bearing connection section, improving cutting efficiency, reducing stress concentration caused by structural abrupt changes, and enhancing the structural strength of the bevel gear shaft. After grinding the bearing connection section, the grinding wheel can retract within the corner transition structure and transfer to the shaft shoulder wall, resulting in higher grinding efficiency.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a bevel gear shaft provided according to an embodiment of this application; Figure 2 This is a schematic diagram of the transmission assembly provided according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the gasket provided according to an embodiment of this application; Figure 4 A cross-sectional view of the bevel gear shaft and shim provided in the embodiments of this application; Figure 5 This is a partial cross-sectional view of a transmission assembly provided according to an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures 10. Bevel gear shaft 11. Bevel gear section 12 Bearing connection section 13 Main spindle section 14. Shoulder wall 15. Corner transition structure 20 bearings 30 gaskets 31 Second sidewall 32 Inner peripheral wall 33. Peripheral wall 34. Chamfered surface 40 bushing Detailed Implementation The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0019] The following description, with reference to the accompanying drawings, describes the transmission assembly, the machining method of the bevel gear shaft, the rotary mechanism, and the working machinery according to this application.

[0020] like Figure 1 The diagram shown is a structural schematic of the bevel gear shaft 10 provided according to an embodiment of this application; as shown... Figure 2 The diagram shown is a structural schematic of a transmission assembly provided according to an embodiment of this application. The rotary mechanism includes the transmission assembly. The transmission assembly provided in this application includes: The bevel gear shaft 10 has a bevel gear section 11, a bearing connection section 12 and a main shaft section 13 that are connected and coaxially along the axial direction. The main shaft section 13 is fitted with a bushing 40. The bevel gear section 11 is located at the end of the bevel gear shaft 10. The end of the bevel gear section 11 facing the bearing connection section 12 is provided with a shoulder wall 14. The connection between the shoulder wall 14 and the bearing connection section 12 is provided with a corner transition structure 15. Bearing 20, coaxial sleeve 40 is disposed on the outer periphery of bearing connecting section 12; The gasket 30 is sleeved on the bearing connecting section 12. The gasket 30 and the bushing 40 abut against the end faces of both ends of the bearing 20 along the axial direction to achieve axial positioning of the bearing 20.

[0021] In the prior art, the outer circumference of the bearing connection section 12 of the bevel gear shaft 10 needs to be ground with a grinding wheel to ensure that the accuracy of the bearing connection section 12 meets the design requirements. In the prior art, when grinding stepped shafts, grinding wheel runout grooves are usually opened near the shoulder of the step. This ensures that the outer circumference of the stepped shaft is ground and that the grinding wheel can retract smoothly. However, the grinding wheel runout grooves can cause abrupt changes in the local structure of the stepped shaft and further lead to stress concentration at the location of the grinding wheel runout grooves, affecting the strength of the bevel gear shaft 10.

[0022] The transmission assembly provided in this application includes a bevel gear shaft 10, a bearing 20, a washer 30, and a bushing 40. The bevel gear shaft 10 has a bevel gear segment 11, a bearing connecting segment 12, and a main shaft segment 13 connected and coaxially along the axial direction. The bushing 40 is fitted onto the main shaft segment 13, and the bevel gear segment 11 is located at the end of the bevel gear shaft 10. The end of the bevel gear segment 11 facing the bearing connecting segment 12 is designed with a shoulder wall 14. At the connection between the shoulder wall 14 and the bearing connecting segment 12, a corner transition structure 15 is provided. The corner transition structure 15 can be either rounded or chamfered; the drawings show rounded as an example. The bearing 20 and the bushing 40 are located on the outer periphery of the bearing connecting segment 12, ensuring stable rotation and support. The washer 30 is fitted onto the bearing connecting segment 12 and cooperates with the bushing 40, effectively limiting the two ends of the bearing 20 along the axial direction. This application, by designing a corner transition structure 15 at the connection between the shaft shoulder wall 14 and the bearing connecting section 12, not only avoids the structural abruptness and stress concentration problems caused by the traditional grinding wheel overrun groove, but also improves the overall structural strength and service life of the bevel gear shaft 10. The shim 30 and the bushing 40 cooperate to limit the axial ends of the bearing 20. Furthermore, the shim 30 can also cooperate with the shaft shoulder wall 14 to axially position the bearing 20, preventing the bearing 20 from moving towards the corner transition structure 15 and causing it to wobble.

[0023] In one embodiment, such as Figure 3The diagram shown is a structural schematic of the gasket 30 provided according to an embodiment of this application; as shown Figure 4 The image shown is a cross-sectional schematic diagram of the bevel gear shaft 10 and the washer 30 provided according to an embodiment of this application; as shown... Figure 5 The image shown is a partial cross-sectional view of a transmission assembly provided according to an embodiment of this application. The gasket 30 has a first sidewall (not shown in the drawing), a second sidewall 31 opposite to the first sidewall, an outer peripheral wall 33, and an inner peripheral wall 32. A chamfered surface 34 is formed between the inner peripheral wall 32 and the second sidewall 31. There is a gap between the chamfered surface 34 and the inner peripheral wall of the corner transition structure 15. The top edge of the chamfered surface 34 is in contact with the shoulder wall 14, and the bottom edge of the chamfered surface 34 is in contact with the bearing connecting section 12. The accuracy error of a rounded edge is usually greater than that of a flat surface. If the inner peripheral wall of the corner transition structure 15 is used to position the bearing 20, inaccurate positioning may occur. The gasket 30 of this application includes a second side wall 31, an inner peripheral wall 32, and a chamfered surface 34 between the inner peripheral wall 32 and the second side wall 31. There is a gap between the chamfered surface 34 and the inner peripheral wall of the corner transition structure 15. The top edge fits against the shoulder wall 14, allowing the gasket 30 to be axially positioned according to the shoulder wall 14. The bottom edge fits against the bearing connecting section 12, allowing the gasket 30 to be radially positioned according to the bearing connecting section 12. By adopting the above-described gasket 30 structure, the positioning accuracy of the gasket 30 can be improved, ensuring the stable operation of the bearing 20.

[0024] In one embodiment, the gasket 30 includes a substrate (not shown in the drawings) and a wear-resistant layer (not shown in the drawings) coated on the substrate. Both the first sidewall and the second sidewall 31 have wear-resistant layers. Coating the surface of the machine body with a wear-resistant layer can improve the wear resistance of the gasket 30 and extend its service life. The wear-resistant layer also reduces friction between the gasket 30 and the bearing connection section 12 and the shoulder wall 14, reducing wear and further ensuring the positioning accuracy of the gasket 30 and the stable operation of the bearing 20. In specific implementations, the wear-resistant layer can be coated onto the surface of the substrate using processes such as spraying, electroplating, or thermal spraying. The material of the wear-resistant layer can be polytetrafluoroethylene, tungsten carbide, titanium carbide, or other materials with high hardness and wear resistance.

[0025] In one embodiment, the substrate is made of a metallic material. Using a metallic material for the substrate ensures that the gasket 30 has sufficient strength and rigidity to withstand the various forces and vibrations generated during the operation of the bearing 20. Common metallic materials used for substrates include stainless steel and carbon steel. Stainless steel has excellent corrosion resistance and can maintain stable performance in harsh working environments; carbon steel has high strength and hardness, and is relatively inexpensive, making it widely used in applications where corrosion resistance requirements are not particularly high.

[0026] In one embodiment, the corner transition structure 15 is rounded with a radius greater than 3 mm. During the grinding process, the grinding edge inevitably forms a rounded corner. If the rounded corner is too small, it can easily cause incomplete grinding of the bearing connection section 12 or collision between the grinding wheel and the rounded corner. A rounded radius greater than 3 mm allows the grinding wheel to retract smoothly when grinding to the rounded position, avoiding collision with the inner circumferential wall of the rounded corner, ensuring smooth grinding, and improving the safety of the grinding process and the surface quality of the bevel gear shaft 10. In addition, a larger rounded radius also helps to reduce stress concentration, further enhancing the structural strength of the bevel gear shaft 10.

[0027] In one embodiment, the corner transition structure is a chamfer. Using a chamfer as the corner transition structure 15 is ingenious and practical. The chamfer makes the transition between the bevel gear shaft 10 and the bearing connection section 12 smoother, effectively reducing the possibility of stress concentration. Compared to a grinding wheel runout groove, the chamfer structure does not cause abrupt changes in the local structure, thus enhancing the overall structural strength of the bevel gear shaft 10. The chamfer structure is also simpler to manufacture, reducing processing difficulty and cost. Simultaneously, the chamfer is very beneficial for the grinding wheel retraction operation, allowing the grinding wheel to retract smoothly during grinding, improving the efficiency and safety of the grinding process.

[0028] In one embodiment, the chamfer is a uniform width chamfer, with the side length of the chamfer on both vertical surfaces greater than 3 mm. This uniform width chamfer design ensures a more even and stable transition at the connection between the shoulder wall 14 and the bearing connection section 12. The setting of side lengths greater than 3 mm on both vertical surfaces guarantees sufficient transition space, allowing the grinding wheel to retract smoothly during grinding, while avoiding stress concentration problems caused by an excessively small chamfer. This design not only improves the structural strength of the bevel gear shaft 10 but also extends its service life. In practical applications, the uniform width chamfer design also facilitates machining and inspection, reducing production costs and quality control difficulties. Furthermore, the uniform width chamfer allows for better fit with the shim 30, achieving precise positioning and stable operation of the bearing 20, thus improving the reliability and performance of the entire transmission assembly.

[0029] In one embodiment, the shoulder wall 14 forms an obtuse angle with the outer periphery of the bearing connecting section 12, and the side of the shim 30 facing the shoulder wall 14 is in contact with the shoulder wall 14. To achieve a tighter fit between the shim 30 and the shoulder wall 14, the shoulder wall 14 of this application is designed to form an obtuse angle with the outer periphery of the bearing connecting section 12. This design not only optimizes the fit between the shim 30 and the shoulder wall 14 but also enhances the stability of the structure. Furthermore, the obtuse angle design helps to disperse stress, reducing the risk of structural damage due to stress concentration, and further improving the service life and overall performance of the bevel gear shaft 10.

[0030] By employing the aforementioned transmission assembly, it is unnecessary to create a grinding wheel runout groove on the bearing connection section 12 of the bevel gear shaft 10, thereby simplifying the machining process and improving machining efficiency. Simultaneously, the presence of the corner transition structure 15 allows the grinding wheel to retract smoothly after grinding, avoiding the risk of collision with the bevel gear shaft 10 and ensuring machining safety and the surface quality of the bevel gear shaft 10. Furthermore, the design of this transmission assembly effectively reduces stress concentration caused by structural abrupt changes, enhancing the structural strength and service life of the bevel gear shaft 10.

[0031] In one embodiment, a method for machining a bevel gear shaft 10 is provided. The method includes the following steps: machining the bearing connecting section 12 and the shoulder wall 14, and cutting the connection between the shoulder wall 14 and the bearing connecting section 12 into a corner transition structure 15; grinding the bearing connecting section 12 and the shoulder wall 14 with a grinding wheel; and heat treating the bevel gear shaft 10. In the prior art, the machining process of the bevel gear shaft 10 typically requires first machining the bearing connecting section 12, then machining the grinding wheel runout groove, then grinding the bearing connecting section 12 and the shoulder wall 14 respectively, and finally heat treating. This process requires multiple machining and grinding operations, making the operation complex. In this application, the machining of the bearing connecting section 12 and the shoulder of the bevel gear shaft 10 only requires one machining operation, one grinding operation, and one heat treatment operation to complete the machining of the bearing connecting section 12, the shoulder section, and the corner transition structure 15, improving machining efficiency and reducing production costs.

[0032] In one embodiment, the grinding process of the bearing connecting section 12 and the shoulder wall 14 using a grinding wheel includes: grinding the bearing connecting section 12 axially; performing a retraction operation using an arc-shaped tool retraction path when grinding to the corner transition structure 15; and grinding the shoulder wall 14 radially. When grinding the bearing connecting section 12 and the shoulder wall 14, attention must be paid to the grinding sequence and retraction path to ensure grinding effectiveness and machining safety. First, the grinding wheel grinds the bearing connecting section 12 axially. When grinding to the corner transition structure 15, the grinding wheel performs a retraction operation using an arc-shaped tool retraction path to avoid collision with the inner circumferential wall of the corner transition structure 15. Subsequently, the grinding wheel grinds the shoulder wall 14 radially to ensure the accuracy and surface quality of the shoulder wall 14. This grinding step design not only improves the efficiency of the grinding process but also ensures machining safety and the surface quality of the bevel gear shaft 10.

[0033] In one embodiment, the processing method further includes the following steps: after grinding, determining the edge radius of the grinding wheel; if the edge radius is greater than a preset value, replacing the grinding wheel. During the grinding process, the grinding wheel gradually wears down over time, and the edge radius gradually increases. Continuing to use a grinding wheel with an excessively large edge radius will not only affect grinding accuracy and surface quality but may also cause the grinding wheel to collide with the inner wall of the edge transition structure 15. Therefore, this application adds a step to determine the edge radius of the grinding wheel after grinding. When the edge radius of the grinding wheel is detected to be greater than a preset value, it indicates that the grinding wheel has worn to a certain extent and needs to be replaced with a new grinding wheel in a timely manner to ensure that subsequent grinding operations can proceed smoothly, thereby ensuring the processing quality and production efficiency of the bevel gear shaft 10. The addition of this step further improves the controllability and stability of the processing process.

[0034] The aforementioned machining method for the bevel gear shaft 10 enables the efficient production of bevel gear shafts 10 with high strength and excellent performance. This method simplifies machining steps, reducing complexity and cost while improving machining efficiency and the surface quality of the bevel gear shaft 10. Furthermore, this method emphasizes safety and controllability during machining. Through a reasonable grinding sequence and tool retraction path design, as well as timely grinding wheel replacement, the stability of the machining process and the machining quality of the bevel gear shaft 10 are ensured. Therefore, this machining method for the bevel gear shaft 10 has high practical value and application prospects, and can meet the high precision and high quality requirements of transmission components for the bevel gear shaft 10.

[0035] In one embodiment, a rotary mechanism is provided, including the transmission components described above.

[0036] In one embodiment, a working machine is provided, including the aforementioned rotary mechanism.

[0037] In the description of this application, it should be understood that 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. Therefore, 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.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; 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 based on the specific circumstances.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A transmission component, characterized in that, include: The bevel gear shaft (10) has a bevel gear segment (11), a bearing connecting segment (12) and a main shaft segment (13) connected in sequence along the axial direction and coaxial. The main shaft segment (13) is fitted with a bushing (40). The bevel gear segment (11) is located at the end of the bevel gear shaft (10). The end of the bevel gear segment (11) facing the bearing connecting segment (12) is provided with a shoulder wall (14). The connection between the shoulder wall (14) and the bearing connecting segment (12) is provided with a corner transition structure (15). The bearing (20) and the coaxial sleeve (40) are disposed on the outer periphery of the bearing connecting section (12); A gasket (30) is fitted onto the bearing connecting section (12). The gasket (30) and the bushing (40) abut against the end faces of both ends of the bearing (20) along the axial direction to achieve axial positioning of the bearing (20).

2. The transmission assembly according to claim 1, characterized in that, The gasket (30) has a first sidewall, a second sidewall (31) opposite to the first sidewall, an outer peripheral wall (33) and an inner peripheral wall (32). A chamfered surface (34) is formed between the inner peripheral wall (32) and the second sidewall (31). There is a gap between the chamfered surface (34) and the inner peripheral wall of the corner transition structure (15). The top edge of the chamfered surface (34) is in contact with the shoulder wall (14), and the bottom edge of the chamfered surface (34) is in contact with the bearing connecting section (12).

3. The transmission assembly according to claim 2, characterized in that, The gasket (30) includes a substrate and a wear-resistant layer coated on the substrate, and both the first sidewall and the second sidewall (31) have the wear-resistant layer.

4. The transmission assembly according to claim 1, characterized in that, The corner transition structure (15) is rounded, and the radius of the rounded part is greater than 3mm.

5. The transmission assembly according to any one of claims 1 to 4, characterized in that, The shoulder wall (14) forms an obtuse angle with the outer periphery of the bearing connecting section (12), and the side of the gasket (30) facing the shoulder wall (14) is in contact with the shoulder wall (14).

6. A method for machining a bevel gear shaft, characterized in that, The machining method for processing the bevel gear shaft (10) according to any one of claims 1 to 5 includes the following steps: The bearing connecting section (12) and the shoulder wall (14) are machined, and the connection between the shoulder wall (14) and the bearing connecting section (12) is cut into the corner transition structure (15). The bearing connecting section (12) and the shoulder wall (14) are ground using a grinding wheel; The bevel gear shaft (10) is subjected to heat treatment.

7. The machining method for a bevel gear shaft according to claim 6, characterized in that, The step of grinding the bearing connecting section (12) and the shoulder wall (14) with a grinding wheel includes: The bearing connection section (12) is ground along the axial direction; When grinding to the corner transition structure (15), the tool retraction operation is performed using an arc retraction path; The shoulder wall (14) is ground radially.

8. The machining method for a bevel gear shaft according to claim 6, characterized in that, The processing method further includes the following steps: After grinding is completed, determine the size of the edge radius of the grinding wheel; If the edge radius is greater than a preset value, replace the grinding wheel.

9. A rotary mechanism, characterized in that, The transmission component includes any one of claims 1 to 5.

10. A type of operating machinery, characterized in that, Includes the rotary mechanism as described in claim 9.

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