Multi-connected high-precision gear shaft
By setting splines and multiple gears on the gear shaft body, synchronous transmission of multiple transmission equipment is achieved, solving the problem that existing gear shafts are difficult to achieve multi-mechanical linkage, and improving accuracy and stability.
Patent Information
- Application Number
- CN202422186738.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-09-06
AI Technical Summary
It is difficult for existing tooth shafts to achieve linkage of multiple mechanisms while ensuring accuracy, and it is usually necessary to use multiple tooth shaft structures to link up step by step.
A multi-connected high-precision tooth shaft is designed, and by providing splines and multiple gears on the tooth shaft body, they are respectively connected to the external transmission equipment, so that multiple transmission equipment can be driven simultaneously.
The function of linking multiple mechanisms through one tooth shaft is realized, which improves the accuracy and stability of the tooth shaft and simplifies structural design.
Smart Images
Figure CN222937197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gear shafts, and particularly relates to a multi-connected high-precision gear shaft. Background Art
[0002] A gear shaft refers to a mechanical part that supports a rotating part and rotates with it to transmit motion, torque or bending moment. Generally, it is in the shape of a metal round rod, and each section can have a different diameter. The rotating parts in a machine are installed on the shaft. Generally, the number of gears on an existing gear shaft is two, which is used to realize the transmission between two mechanisms. When multiple mechanisms need to be linked, generally, multiple gear shaft structures are used to realize step-by-step linkage. How to enable a single gear shaft to realize the linkage of multiple mechanisms while ensuring accuracy is the direction of current research and development. Content of the Utility Model
[0003] The purpose of the utility model is to provide a multi-connected high-precision gear shaft, which has the advantage of being able to link multiple mechanisms through a single gear shaft.
[0004] The above technical purpose of the utility model is achieved through the following technical solutions:
[0005] A multi-connected high-precision gear shaft includes a gear shaft body. The gear shaft body includes a front section, a middle section and a rear section. A spline is provided on the front section. A first gear is provided on one side of the rear section close to the middle section. A second gear is fixedly provided in the middle of the rear section. A third gear is provided on the rear side of the rear section. The diameters of the spline, the first gear, the second gear and the third gear gradually increase.
[0006] Preferably, a 30° chamfer is provided at the front end of the spline. The major diameter of the spline is 47.5 mm, the minor diameter of the spline is 43.2 mm, the number of teeth of the spline is 23, and the module of the spline is 2.0 mm.
[0007] Preferably, a 45° chamfer is provided at the front end of the first gear. The addendum height of the first gear is 5.4 mm, the addendum fillet radius of the first gear is 0.74 mm, the number of teeth of the first gear is 19, and the module of the first gear is 3.7 mm.
[0008] Preferably, 2° chamfers are provided on both the front side and the rear side of the second gear. The addendum height of the second gear is 6.3 mm, the addendum fillet radius of the second gear is 0.9 mm, the number of teeth of the second gear is 22, and the module of the second gear is 4.5 mm.
[0009] Preferably, chamfers of 2° are provided on both the front side and the rear side of the third gear. The addendum height of the third gear is 6.3 mm, the addendum fillet radius of the third gear is 0.9 mm, the number of teeth of the third gear is 22, and the module of the third gear is 4.5 mm.
[0010] Preferably, the root circle diameter of the third gear is greater than that of the second gear, the root circle diameter of the second gear is greater than that of the first gear, and the root circle diameter of the first gear is greater than the major diameter of the spline.
[0011] Preferably, connection holes are provided at both the front end and the rear end of the tooth shaft body, and the tooth shaft body is connected to external equipment through the two connection holes.
[0012] The beneficial effects of the present utility model are as follows: The spline, the first gear, the second gear, and the third gear can be respectively connected to an external transmission device, so that four external transmission devices can be synchronously driven. Description of the Drawings
[0013] Figure 1 is a schematic structural diagram of the embodiment;
[0014] Figure 2 is another schematic structural diagram of the embodiment.
[0015] Reference numerals: 1, tooth shaft body; 2, front section; 3, middle section; 4, rear section; 5, spline; 6, first gear; 7, second gear; 8, third gear; 9, connection hole. Detailed Embodiments
[0016] The following are only the preferred embodiments of the present utility model, and the protection scope is not limited to this embodiment. Any technical solutions falling within the concept of the present utility model shall belong to the protection scope of the present utility model. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom" and "top", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.
[0017] As Figures 1 to 2 shown, a multi-connected high-precision tooth shaft includes a tooth shaft body 1, and the tooth shaft body 1 includes a front section 2, a middle section 3, and a rear section 4. The diameter of the front end is smaller than that of the middle section 3, the diameter of the middle section 3 is smaller than that of the rear section 4, and the lengths of the front section 2, the middle section 3, and the rear section 4 also increase in sequence.
[0018] A spline 5 is provided on the front section 2. The front end of the spline 5 is provided with a 30° chamfer. The major diameter of the spline 5 is 47.5 mm, the minor diameter of the spline 5 is 43.2 mm, the number of teeth of the spline 5 is 23, and the module of the spline 5 is 2.0 mm.
[0019] On one side of the rear section 4 close to the middle section 3, a first gear 6 is provided. The front end of the first gear 6 is provided with a 45° chamfer. The addendum height of the first gear 6 is 5.4 mm, the addendum fillet radius of the first gear 6 is 0.74 mm, the number of teeth of the first gear 6 is 19, and the module of the first gear 6 is 3.7 mm.
[0020] In the middle of the rear section 4, a second gear 7 is fixedly provided. Chamfers of 2° are provided on both the front side and the rear side of the second gear 7. The addendum height of the second gear 7 is 6.3 mm, the addendum fillet radius of the second gear 7 is 0.9 mm, the number of teeth of the second gear 7 is 22, and the module of the second gear 7 is 4.5 mm.
[0021] On the rear side part of the rear section 4, a third gear 8 is provided. Chamfers of 2° are provided on both the front side and the rear side of the third gear 8. The addendum height of the third gear 8 is 6.3 mm, the addendum fillet radius of the third gear 8 is 0.9 mm, the number of teeth of the third gear 8 is 22, and the module of the third gear 8 is 4.5 mm.
[0022] The root circle diameter of the third gear 8 is greater than the root circle diameter of the second gear 7, the root circle diameter of the second gear 7 is greater than the root circle diameter of the first gear 6, and the root circle diameter of the first gear 6 is greater than the major diameter of the spline 5.
[0023] Connection holes 9 are provided at both the front end and the rear end of the tooth shaft body 1. The tooth shaft body 1 is connected to external equipment through the two connection holes 9. Connecting to external equipment at both ends can better increase the stability of the tooth shaft body 1 during rotation.
[0024] This design mainly sets multiple gears on the same tooth shaft body 1, which can be transmitted with multiple transmission mechanisms, and limits the diameter and number of teeth of each gear or spline 5, ensuring the accuracy of the gears and the spline 5.
[0025] In the specific embodiments described above, the technical problems solved, the technical solutions, and the beneficial effects of the present utility model are further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A multi-joint high-precision gear shaft, comprising a gear shaft body (1), characterized in that: The gear shaft body (1) comprises a front section (2), a middle section (3) and a rear section (4); the front section (2) is provided with a spline (5); the rear section (4) is provided with a first gear (6) on a side close to the middle section (3); the middle of the rear section (4) is fixed with a second gear (7); the rear side of the rear section (4) is provided with a third gear (8); and the diameters of the spline (5), the first gear (6), the second gear (7) and the third gear (8) gradually increase.
2. A multi-joint high-precision gear shaft according to claim 1, characterized in that: The front end of the spline (5) is provided with a chamfer of 30°, the major diameter of the spline (5) is 47.5 mm, the minor diameter of the spline (5) is 43.2 mm, the number of teeth of the spline (5) is 23, and the module of the spline (5) is 2.0 mm.
3. The multi-joint high-precision gear shaft according to claim 1, characterized in that: The front end of the first gear (6) is provided with a chamfer of 45°, the tooth top height of the first gear (6) is 5.4 mm, the tooth top fillet radius of the first gear (6) is 0.74 mm, the number of teeth of the first gear (6) is 19, and the module of the first gear (6) is 3.7 mm.
4. The multi-joint high-precision gear shaft according to claim 1, characterized in that: The front and rear sides of the second gear (7) are both provided with a chamfer of 2°, the tooth top height of the second gear (7) is 6.3 mm, the tooth top fillet radius of the second gear (7) is 0.9 mm, the number of teeth of the second gear (7) is 22, and the module of the second gear (7) is 4.5 mm.
5. The multi-joint high-precision gear shaft according to claim 1, characterized in that: The front and rear sides of the third gear (8) are both provided with a chamfer of 2°, the tooth top height of the third gear (8) is 6.3 mm, the tooth top fillet radius of the third gear (8) is 0.9 mm, the number of teeth of the third gear (8) is 22, and the module of the third gear (8) is 4.5 mm.
6. The multi-joint high-precision gear shaft according to claim 1, characterized in that: The root circle diameter of the third gear (8) is greater than the root circle diameter of the second gear (7), the root circle diameter of the second gear (7) is greater than the root circle diameter of the first gear (6), and the root circle diameter of the first gear (6) is greater than the major diameter of the spline (5).
7. The multi-joint high-precision gear shaft according to claim 6, characterized in that: The front end and the rear end of the gear shaft body (1) are both provided with connection holes (9), and the gear shaft body (1) is connected to external equipment via the two connection holes (9).