Spherical involute spiral bevel gear
By employing additive manufacturing technology and material strength gradient design in spiral bevel gears, the problems of design accuracy and processing complexity in existing technologies have been solved, enabling efficient and low-cost manufacturing of high-performance spiral bevel gears.
Patent Information
- Application Number
- CN202520169388.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing spiral bevel gear machining methods and machine tools are based on engineering approximations, which affect design accuracy, lead to performance degradation, and result in complex and costly machining processes.
Spherical involute gear teeth are formed using additive manufacturing technology. The material is divided into a top layer, a transition layer, and a root layer, with a gradient distribution of material strength. Laser selective melting or stereolithography is used for forming. Material options include aluminum alloy, titanium alloy, steel, or photosensitive resin.
It improves the load-bearing capacity, smooth operation, and transmission efficiency of spiral bevel gears, while reducing noise, simplifying the processing technology and reducing costs.
Smart Images
Figure CN223676943U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of mechanical transmission, and particularly relates to a spherical involute arc tooth bevel gear. BACKGROUND
[0002] The spherical involute arc tooth bevel gear has the advantages of large bearing capacity, stable operation (no jamming), high transmission efficiency and small noise, and is widely applied to high-speed or heavy-load mechanical products such as aviation, aerospace and engineering machinery. The existing arc tooth bevel gear machining method and machine tool are established on the basis of engineering approximation. The approximation will inevitably affect the design precision of the arc tooth bevel gear, will affect the unique advantages of the arc tooth bevel gear to some extent, and will reduce the use performance. Moreover, the machining process is complex, and the cost is high. SUMMARY
[0003] In order to solve the above problems, the application provides a spherical involute arc tooth bevel gear, which comprises:
[0004] A conical gear shaft base body and a spherical involute gear tooth located on the spherical surface of the gear shaft base body;
[0005] The spherical involute gear tooth is divided into a tooth root layer, a transition layer and a tooth top layer from the tooth root to the tooth top. The tooth top layer is made of a first material, the tooth root layer is made of a second material, and the transition layer between the tooth top layer and the tooth root layer is made of a transition material. The tooth top layer comprises a tooth profile meshing area for meshing with a gear.
[0006] Preferably, the strength of the first material is greater than that of the transition material, and the strength of the transition material is greater than that of the second material.
[0007] Preferably, the material of the gear shaft base body and the tooth root layer of the spherical involute gear tooth is the same.
[0008] Preferably, the spherical involute gear tooth is formed on the gear shaft base body by additive manufacturing.
[0009] Preferably, when the spherical involute gear tooth and the gear shaft base body are made of a metal material, laser selective melting forming is adopted.
[0010] Preferably, when the spherical involute gear tooth and the gear shaft base body are made of a non-metal material, stereolithography or fused deposition forming is adopted.
[0011] Preferably, the material of the gear shaft base body and the spherical involute gear tooth comprises an aluminum alloy, a titanium alloy, steel or photosensitive resin.
[0012] The advantages of the application include that the arc tooth bevel gear has the advantages of large bearing capacity, stable operation (no jamming), high transmission efficiency and small noise. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the spherical involute spiral bevel gear of this utility model.
[0014] Figure 2 yes Figure 1 A partial schematic diagram of a spherical involute bevel gear. Detailed Implementation
[0015] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.
[0016] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.
[0017] like Figures 1-2 As shown, a spherical involute bevel gear 5 includes a conical gear shaft base 1 and spherical involute gear teeth 2 located on the conical surface of the gear shaft base 1;
[0018] Among them, the spherical involute gear tooth 2 is divided into a root layer, a transition layer, and a top layer along the tooth root to the tooth tip; the top layer is made of a first material, such as... Figure 2 At the location of A, the root layer uses a second material, such as... Figure 2 At position B, the transition layer 4 between the top and root layers of the tooth is made of a transition material. The transition layer 4 is a material gradient composite structure. The top layer includes a tooth profile meshing region 3 for meshing with the gear. The strength of the first material is greater than that of the transition material, which in turn is greater than that of the second material. The static and fatigue properties of the first material are both greater than those of the transition material, which in turn are greater than those of the second material. By controlling the distribution of strength and fatigue characteristics through the transition layer 4, the mechanical properties of the additively manufactured spiral bevel gear are improved, extending its service life.
[0019] The gear shaft base body 1 and the root layer of the spherical involute gear tooth 2 are made of the same material, so that they have the same mechanical properties.
[0020] The spherical involute gear tooth 2 is formed on the gear shaft base body 1 by additive manufacturing. When the spherical involute gear tooth 2 and the gear shaft base body 1 are made of metal materials, selective laser melting (SLM) is adopted. When the spherical involute gear tooth 2 and the gear shaft base body 1 are made of non-metal materials, stereolithography (SLA) or fused deposition modeling (FDM) is adopted.
[0021] The material of the gear shaft base body 1 and the spherical involute gear tooth 2 includes aluminum alloy, titanium alloy, steel or photosensitive resin.
[0022] The arc tooth bevel gear has the advantages of large bearing capacity, stable operation, no jamming, high transmission efficiency and small noise.
[0023] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A spherical involute arc tooth bevel gear, characterized in that, The application relates to a conical gear shaft base (1) and a spherical involute gear tooth (2) on the conical surface of the gear shaft base (1). The spherical involute gear tooth (2) is divided into a tooth root layer, a transition layer and a tooth top layer from the tooth root to the tooth top; the tooth top layer is made of a first material, the tooth root layer is made of a second material, and the transition layer between the tooth top layer and the tooth root layer is made of a transition material; the tooth top layer comprises a tooth profile meshing area (3) for meshing with a gear; the strength of the first material is greater than that of the transition material, and the strength of the transition material is greater than that of the second material. The gear shaft base (1) and the tooth root layer of the spherical involute gear tooth (2) are made of the same material.
2. The spherical involute spur gear set of claim 1, wherein, The spherical involute gear tooth (2) is formed on the gear shaft base (1) through additive manufacturing.
3. The spherical involute spur gear set of claim 1, wherein, When the spherical involute gear tooth (2) and the gear shaft base (1) are made of metal materials, laser selective melting is adopted.
4. The spherical involute spur gear set of claim 1, wherein, When the spherical involute gear tooth (2) and the gear shaft base (1) are made of non-metal materials, stereolithography or fused deposition modeling is adopted.
5. The spherical involute spur gear set of claim 1, wherein, The materials of the gear shaft base (1) and the spherical involute gear tooth (2) include aluminum alloy, titanium alloy, steel or photosensitive resin.
6. The spherical involute spur gear set of claim 1, wherein,