Internal spline assembly

Abstract

The utility model discloses an internal spline assembly which comprises a spline body and a connecting piece, a connecting channel is arranged in the spline body, the connecting piece is arranged at one end of the spline body and arranged in the connecting channel, a connecting hole section is formed between the connecting piece and the connecting channel, and spline teeth are evenly arranged on the inner side wall of the connecting hole section. A spline groove is formed between every two adjacent spline teeth, and a hardening area is arranged on the end face, away from the connecting piece, of the spline body and surrounds the outer sides of the spline teeth. The internal spline assembly and other mechanical parts or shafts can be conveniently installed and positioned through the connecting piece, meanwhile, the connecting hole section is just formed between the connecting piece and the connecting channel, the spline teeth are arranged on the connecting hole section, and the spline teeth are matched with the spline grooves and used for being tightly matched and stably connected with the external mechanical parts. The spline body is further provided with the hardening area, the hardening area completely surrounds the spline teeth, the strength and hardness of the spline teeth are improved, and transmission accuracy and reliability can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of key connection, and in particular relates to an internal spline component. Background Art

[0002] Spline is a mechanical transmission element, mainly used to transmit rotational motion and torque. Splines are widely used in various mechanical equipment that need to transmit torque, such as the transmission systems of automobiles, ships, aircraft, etc. In addition, splines are also used in the production of tools and machines, such as power tools, machine tools, etc. The internal spline is a specific type of spline. Spline teeth are generally provided on the internal spline to facilitate the connection between the internal spline and the mechanical parts or shafts. However, the existing internal spline will suffer severe wear on the spline tooth surface during long-term operation, resulting in tooth distortion, reduced transmission efficiency, and even more serious spline failure. Summary of the invention

[0003] The utility model aims to provide a technical solution for an internal spline component in view of the deficiencies in the prior art. The structural design is ingenious and reasonable. The ingenious design of the connecting piece increases the overall structural firmness and strength, and facilitates the installation and positioning between the internal spline component and other mechanical parts or shafts. At the same time, the connecting piece forms a connecting hole section between the connecting piece and the connecting channel. Spline teeth are arranged on the connecting hole section. The spline teeth cooperate with the spline grooves for close cooperation and stable connection with external mechanical parts. A hardened area is also arranged on the spline body. The hardened area completely surrounds the spline teeth, thereby improving the strength and hardness of the spline teeth and enhancing the wear resistance of the spline teeth. The size of the spline teeth is more stable, which helps to improve the accuracy and reliability of the transmission.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An internal spline assembly comprises a spline body and a connecting piece, wherein a connecting channel is arranged in the spline body, the connecting piece is arranged at one end of the spline body, and the connecting piece is arranged in the connecting channel, a connecting hole section is formed between the connecting piece and the connecting channel, spline teeth are evenly arranged on the inner side wall of the connecting hole section, spline grooves are formed between adjacent spline teeth, a hardened area is arranged on the end surface of the spline body away from the connecting piece, and the hardened area surrounds the outer side of the spline teeth; the ingenious design of the connecting piece is adopted to increase the overall structural firmness and structural strength, and facilitate the installation and positioning between the internal spline assembly and other mechanical parts or shafts, and at the same time, a connecting hole section is formed between the connecting piece and the connecting channel, spline teeth are arranged on the connecting hole section, and the spline teeth cooperate with the spline grooves for close cooperation and stable connection with external mechanical parts, a hardened area is also arranged on the spline body, and the hardened area completely surrounds the spline teeth, thereby improving the strength and hardness of the spline teeth, enhancing the wear resistance of the spline teeth, and the size of the spline teeth is more stable, thereby helping to improve the accuracy and reliability of transmission.

[0006] Furthermore, the depth of the hardened zone exceeds the major diameter of the spline tooth by 0.3 to 2.0 mm, and the size range is reasonably designed to ensure that the hardened zone can completely surround the spline tooth, thereby significantly improving the surface hardness and strength of the spline tooth, thereby enhancing its wear resistance and load-bearing capacity.

[0007] Furthermore, the spline body is provided with a chamfer, which can remove burrs, making the surface of the spline body smoother and more beautiful, reducing stress concentration, and improving the strength of the spline body.

[0008] Furthermore, the spline body includes body segment one, body segment two and body segment three, body segment two is arranged between body segment one and body segment three, the outer diameters of body segment one, body segment two and body segment three are reduced successively, so that step one is formed between body segment one and body segment two, and step two is formed between body segment two and body segment three. The structural design is ingenious and reasonable. The spline body is mainly composed of three body segments with different outer diameters, and the outer diameters of the three body segments are reduced successively, so that steps are formed between adjacent body segments. The formation of the steps can facilitate the positioning and installation of the spline body when it cooperates with other components.

[0009] Furthermore, the body section 1, the body section 2, and the body section 3 are an integrally formed structure. The integrally formed structure design of the three can ensure the overall structural strength and structural firmness of the spline body, and is also convenient for actual processing and forming.

[0010] Furthermore, an external thread section is provided on the main body section three. The design of the external thread section can realize the threaded connection between the spline body and other components, ensuring the tightness and reliability of the connection, and is easy to install and disassemble, facilitating actual assembly and subsequent maintenance and replacement.

[0011] Furthermore, a through hole is provided at the center of the connector, which is connected to the connecting hole section. The structural design is ingenious and reasonable. The through hole is located at the center of the connector, which can facilitate the installation and positioning of the connector when it is connected to other components.

[0012] Furthermore, the spline teeth are trapezoidal teeth, which have high strength, can withstand large torque, and have a stable structure, which helps to extend the service life of the spline and improve connection reliability.

[0013] Furthermore, a laser QR code mark is provided on the spline body. The design of the laser QR code mark can facilitate the management and tracking of products during production, circulation or use, improve actual production efficiency and product quality, and has strong anti-counterfeiting properties, facilitating product verification during the sales process.

[0014] Furthermore, positioning holes are evenly distributed circumferentially on the end surface of the main body segment. The design of the positioning holes can facilitate the precise positioning and fixation between the spline assembly and other components, thereby improving assembly efficiency. Multiple positioning holes are arranged and evenly distributed, thereby making the connection between the spline assembly and other components more uniform and stable, thereby improving the overall structural stability and reliability.

[0015] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0016] The structural design of the utility model is ingenious and reasonable. It adopts the ingenious design of the connecting piece to increase the overall structural firmness and strength, and facilitates the installation and positioning between the internal spline component and other mechanical parts or shafts. At the same time, the connecting piece forms a connecting hole section between the connecting channel, and spline teeth are arranged on the connecting hole section. The spline teeth cooperate with the spline grooves for close cooperation and stable connection with external mechanical parts. A hardened area is also arranged on the spline body, and the hardened area completely surrounds the spline teeth, thereby improving the strength and hardness of the spline teeth and enhancing the wear resistance of the spline teeth. The size of the spline teeth is more stable, which helps to improve the accuracy and reliability of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the rear structure;

[0020] Figure 3 for Figure 1 A schematic diagram of the side structure of

[0021] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0022] In the figure: 1-spline body; 2-connecting piece; 3-connecting hole section; 4-spline teeth; 5-spline groove; 6-hardened area; 7-chamfer; 8-body section one; 9-body section two; 10-body section three; 11-step one; 12-step two; 13-external thread section; 14-perforation; 15-laser QR code identification; 16-positioning hole. DETAILED DESCRIPTION

[0023] like Figures 1 to 3As shown, it is the first embodiment of the utility model, an internal spline assembly includes a spline body 1 and a connector 2, a connecting channel is provided in the spline body 1, the connector 2 is provided at one end of the spline body 1, and the connector 2 is provided in the connecting channel, a connecting cavity is provided in the connector 2, the connector 2 and the spline body 1 are fixed by welding, threaded connection or the like, a connecting hole section 3 is formed between the connector 2 and the connecting channel, spline teeth 4 are evenly provided on the inner side wall of the connecting hole section 3, spline grooves 5 are formed between adjacent spline teeth 4, a hardened area 6 is provided on the end face of the spline body 1 away from the connector 2, the hardened area 6 surrounds the outer side of the spline teeth 4, a through hole 14 is provided in the center of the connector 2, the through hole 14 is connected to the connecting hole section 3, the structural design is ingenious and reasonable, the through hole 14 is located in the center of the connector 2, and the installation and positioning of the connector 2 when connected with other components can be facilitated.

[0024] The depth of the hardened area 6 exceeds the major diameter of the spline tooth 4 by 0.3 to 2.0 mm, and the size range is reasonably designed to ensure that the hardened area 6 can completely surround the spline tooth 4, thereby significantly improving the surface hardness and strength of the spline tooth 4, thereby enhancing its wear resistance and load-bearing capacity. The spline body 1 is provided with a chamfer 7, which can remove burrs, making the surface of the spline body 1 smoother and more beautiful, reducing stress concentration, and improving the strength of the spline body 1.

[0025] The spline body 1 includes a body section 1 8, a body section 2 9 and a body section 3 10. The body section 2 9 is arranged between the body section 1 8 and the body section 3 10. The outer diameters of the body section 1 8, the body section 2 9 and the body section 3 10 decrease successively, so that a step 11 is formed between the body section 1 8 and the body section 2 9, and a step 2 12 is formed between the body section 2 9 and the body section 3 10. The structural design is ingenious and reasonable. The spline body 1 is mainly composed of three body sections with different outer diameters, and the outer diameters of the three body sections decrease successively, so that steps are formed between adjacent body sections. The formation of steps can facilitate the positioning and installation of the spline body 1 when it cooperates with other components. The body section 1 8, the body section 2 9 and the body section 3 10 are an integrated structure. The integrated structural design of the three can ensure the overall structural strength and structural firmness of the spline body 1, and is also convenient for actual processing and forming. An external thread section 13 is provided on the main body section three 10. The design of the external thread section 13 can realize the threaded connection between the spline body 1 and other components, ensuring the tightness and reliability of the connection, and is easy to install and disassemble, facilitating actual assembly and subsequent maintenance and replacement.

[0026] The spline teeth 4 are trapezoidal teeth, which have high strength, can withstand large torque, and have a stable structure, which helps to extend the service life of the spline and improve the connection reliability. The spline body 1 is provided with a laser QR code mark 15, which is designed to facilitate the management and tracking of products during production, circulation or use, improve actual production efficiency and product quality, and has strong anti-counterfeiting properties, which facilitates the verification of products during sales.

[0027] like Figure 4 As shown, it is the second embodiment of the utility model. Based on the technical solution of the first embodiment, positioning holes 16 are further provided. The positioning holes 16 are evenly distributed circumferentially on the end surface of the main body segment 8. The design of the positioning holes 16 can facilitate the precise positioning and fixation between the spline assembly and other components, thereby improving the assembly efficiency. A plurality of positioning holes 16 are provided and evenly distributed, so that the connection between the spline assembly and other components is more uniform and stable, thereby improving the stability and reliability of the overall structure.

[0028] The structural design of the utility model is ingenious and reasonable. The ingenious design of the connecting piece 2 increases the overall structural firmness and strength, and facilitates the installation and positioning between the internal spline component and other mechanical parts or shafts. At the same time, the connecting piece 2 forms a connecting hole section 3 between the connecting channel, and the connecting hole section 3 is provided with spline teeth 4. The spline teeth 4 cooperate with the spline grooves 5 for close fit and stable connection with external mechanical parts. A hardened area 6 is also provided on the spline body 1, and the hardened area 6 completely surrounds the spline teeth 4, thereby improving the strength and hardness of the spline teeth 4 and enhancing the wear resistance of the spline teeth 4. The size of the spline teeth 4 is more stable, which helps to improve the accuracy and reliability of the transmission.

[0029] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. An internal spline assembly, characterized in that: It includes a spline body and a connecting piece, wherein a connecting channel is arranged in the spline body, the connecting piece is arranged at one end of the spline body, and the connecting piece is arranged in the connecting channel, a connecting hole section is formed between the connecting piece and the connecting channel, spline teeth are evenly arranged on the inner side wall of the connecting hole section, spline grooves are formed between adjacent spline teeth, and a hardened area is arranged on the end surface of the spline body away from the connecting piece, and the hardened area surrounds the outer side of the spline teeth.

2. An internal spline assembly according to claim 1, characterized in that: The depth of the hardened zone exceeds the major diameter of the spline tooth by 0.3 to 2.0 mm.

3. An internal spline assembly according to claim 1, characterized in that: The spline body is provided with a chamfer.

4. An internal spline assembly according to claim 1, characterized in that: The spline body includes body segment 1, body segment 2 and body segment 3, wherein body segment 2 is arranged between body segment 1 and body segment 3, and the outer diameters of body segment 1, body segment 2 and body segment 3 decrease successively, so that step 1 is formed between body segment 1 and body segment 2, and step 2 is formed between body segment 2 and body segment 3.

5. An internal spline assembly according to claim 4, characterized in that: The main body section 1, the main body section 2, and the main body section 3 are an integrally formed structure.

6. An internal spline assembly according to claim 4, characterized in that: The body segment three is provided with an external thread segment.

7. An internal spline assembly according to claim 1, characterized in that: A through hole is provided at the center of the connecting piece, and the through hole is communicated with the connecting hole section.

8. An internal spline assembly according to claim 1, characterized in that: The spline teeth are trapezoidal teeth.

9. An internal spline assembly according to claim 1, characterized in that: The spline body is provided with a laser two-dimensional code mark.

10. An internal spline assembly according to claim 4, characterized in that: Positioning holes are evenly distributed circumferentially on the end surface of the first body segment.

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