High-precision spline comprehensive positioning gear
By designing spoke grooves and heat dissipation grooves on the inner and outer sides of the spline gear and applying a titanium nitride coating, the problem of friction and heat accumulation caused by incomplete lubrication coverage is solved, achieving a spline gear design with high precision, low wear, and efficient heat dissipation.
Patent Information
- Application Number
- CN202422830502.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The lubricating oil in existing spline gears cannot quickly cover the shaft surface, resulting in high friction, rapid wear, and heat generated by prolonged friction, which reduces service life.
The design incorporates spoke grooves and heat dissipation grooves on the inner and outer sides of the helical gear body, combined with a titanium nitride coating, to achieve rapid lubrication and heat dissipation, thereby reducing friction and wear and improving mechanical efficiency and lifespan.
By rapidly swirling the lubricating oil, friction and wear are reduced, lubricating oil leakage is prevented, gear balance is maintained, heat dissipation is effectively achieved, and service life is extended.
Smart Images
Figure CN223498598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spline gear technology, and in particular to a high-precision spline integrated positioning gear. Background Technology
[0002] Splined gears connect to other shafts through spline teeth, while their outer helical teeth can mesh and rotate with other gear components. However, existing splined gears have a single function, and the lubricating oil on their surface cannot quickly penetrate and cover the shaft surface. This results in significant friction between the spline teeth and the outer helical teeth and other gear components, accelerating splined gear wear. Furthermore, prolonged friction generates considerable heat in the shaft, significantly reducing the lifespan of the splined gear. To address these issues, a solution is proposed below. Utility Model Content
[0003] The purpose of this invention is to provide a high-precision spline integrated positioning gear, which has the advantages of good balance, high oil slinging efficiency and good heat dissipation.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0005] A high-precision spline integrated positioning gear includes a helical gear body. The inner side of the helical gear body has a connecting groove, and the inner side of the connecting groove is provided with internal spline teeth. The two sides of the helical gear body are respectively provided with spoke grooves, and one side of each of the two spoke grooves is provided with a recess. The outer side of the helical gear body has a plurality of first heat dissipation grooves, and the inner side of the helical gear body has a plurality of second heat dissipation grooves. Each recess intersects with one of the first heat dissipation grooves and one of the second heat dissipation grooves.
[0006] Preferably, the grooves in the two spoke grooves are staggered.
[0007] Preferably, the surface of the helical gear body is provided with a reinforcing coating, which is a titanium nitride coating.
[0008] Preferably, both spoke grooves include a first arc segment, a second arc segment, a third arc segment, and a fourth arc segment.
[0009] Preferably, the upper edges of both spoke grooves are arc-shaped.
[0010] The beneficial effects of this utility model are as follows:
[0011] 1. When the helical gear body is in the same position, the two spoke grooves can rotate simultaneously. Therefore, the lubricating oil can be quickly swung around by the rotation of the two spoke grooves, thereby reducing the friction and wear between the outer side of the helical gear body and the internal spline teeth and other components. This can effectively improve mechanical efficiency, prevent lubricating oil leakage, and reduce the overall weight of the gear by opening two spoke grooves. It can also maintain the balance of the gear during rotation, thus having the advantages of high precision and compact structure.
[0012] 2. When the outer side of the helical gear body meshes with the internal spline teeth and other components for a long time, it will generate a lot of heat. This will cause the temperature of the helical gear body to rise. Therefore, through the cooperation of several grooves and the first and second heat dissipation grooves, the lubricating oil can quickly penetrate and flow through the inside and outside of the helical gear body. Thus, the heat on the gear can be quickly dissipated by the flow of lubricating oil and its own heat dissipation, which can effectively prevent the gear from overheating and further increase the service life of the gear. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of an embodiment;
[0014] Figure 2 A horizontal sectional view of an embodiment;
[0015] Figure 3 This is a vertical sectional view of an embodiment.
[0016] Reference numerals in the attached drawings: 1. Helical gear body; 2. Connecting groove; 3. Internal spline; 4. Spoke groove; 5. Groove; 6. First heat dissipation groove; 7. Second heat dissipation groove; 8. First arc segment; 9. Second arc segment; 10. Third arc segment; 11. Fourth arc segment. Detailed Implementation
[0017] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model's concept should be protected. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component.
[0018] like Figures 1 to 3As shown, a high-precision spline integrated positioning gear includes a helical gear body 1. A connecting groove 2 is provided on the inner side of the helical gear body 1, and an internal spline tooth 3 is provided on the inner side of the connecting groove 2. Spoke grooves 4 are provided on both sides of the helical gear body 1, and each of the two spoke grooves 4 includes a first arc segment 8, a second arc segment 9, a third arc segment 10, and a fourth arc segment 11. When the helical gear body 1 is in operation, the two spoke grooves 4 can rotate simultaneously. Therefore, the lubricating oil can be quickly swung around by the rotation of the two spoke grooves 4, thereby reducing the friction and wear between the outer side of the helical gear body 1 and the internal spline tooth 3 and other components, and effectively improving mechanical efficiency. At the same time, it prevents lubricating oil leakage. Furthermore, by providing two spoke grooves 4, the overall weight of the gear can be effectively reduced, and the balance of the gear during rotation can be maintained. Therefore, it has the advantages of high precision and compact structure.
[0019] The three major diameters of the internal spline teeth are precision ground to fit the tooth tip of the drive shaft, with a clearance of about 0.02mm. The three side clearances of the internal spline teeth are also precisely fitted to the drive shaft, with a tooth side clearance of about 0.01mm. Therefore, the overall positioning effect of the gear can be guaranteed.
[0020] Each of the two spoke grooves 4 has a groove 5 on one side, and the grooves 5 in the two spoke grooves 4 are staggered. Several first heat dissipation grooves 6 are opened on the outer side of the helical gear body 1, and several second heat dissipation grooves 7 are opened on the inner side of the helical gear body 1. Each groove 5 intersects with one of the first heat dissipation grooves 6 and one of the second heat dissipation grooves 7. When the outer side of the helical gear body 1 meshes with the internal spline teeth 3 and other components for a long time, it will generate a lot of heat, which will cause the temperature of the helical gear body 1 to rise. Therefore, through the cooperation between the grooves 5 and the first heat dissipation grooves 6 and the second heat dissipation grooves 7, the lubricating oil can quickly penetrate and flow through the inside and outside of the helical gear body 1. Thus, the heat on the gear can be quickly dissipated by the flow of lubricating oil and its own heat dissipation, which can effectively prevent the gear from overheating and further increase the service life of the gear.
[0021] The surface of the helical gear body 1 is coated with a reinforcing coating, which is a titanium nitride coating. The titanium nitride coating can slow down the corrosion of the helical gear body 1 and further enhance the strength of the helical gear body 1, thus effectively increasing the service life of the gear. The upper edges of the two spoke grooves 4 are both arc-shaped, which can effectively prevent cuts when the gear is connected to other components.
[0022] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-precision splined integrated positioning gear, characterized in that, The system includes a helical gear body (1), a connecting groove (2) is provided on the inner side of the helical gear body (1), an internal spline tooth (3) is provided on the inner side of the connecting groove (2), spoke grooves (4) are provided on both sides of the helical gear body (1), a groove (5) is provided on one side of each of the two spoke grooves (4), a plurality of first heat dissipation grooves (6) are provided on the outer side of the helical gear body (1), and a plurality of second heat dissipation grooves (7) are provided on the inner side of the helical gear body (1), and each groove (5) intersects with one of the first heat dissipation grooves (6) and one of the second heat dissipation grooves (7).
2. The high-precision splined integrated positioning gear according to claim 1, characterized in that, The grooves (5) provided in the two spoke grooves (4) are arranged alternately.
3. A high-precision spline-integrated positioning gear according to claim 2, characterized in that, The surface of the helical gear body (1) is provided with a reinforcing coating, which is a titanium nitride coating.
4. A high-precision splined integrated positioning gear according to claim 3, characterized in that, Both spoke grooves (4) include a first arc segment (8), a second arc segment (9), a third arc segment (10), and a fourth arc segment (11).
5. A high-precision spline-integrated positioning gear according to claim 4, characterized in that, The upper edges of both spoke grooves (4) are arc-shaped.