High-precision worm and gear transmission mechanism capable of reducing worm and gear transmission gap

Abstract

The utility model relates to the field of mechanical transmission, and discloses a high-precision worm gear and worm transmission mechanism capable of reducing a worm gear and worm transmission gap, which comprises a worm, the surface of the worm is meshed with a worm gear, the surface of the worm gear is provided with an abutting mechanism, and the abutting mechanism is used for enabling the worm gear and the worm to be tightly attached. The worm is rotated to drive the worm gear to rotate, the worm gear is reduced through the action of the balls, direct contact between the worm gear and the worm is avoided, friction force between the worm gear and the worm is effectively reduced, the service life of the worm gear and the worm is prolonged, meanwhile, the stability of the balls is improved through the arrangement of the positioning compression springs, and the service life of the worm gear is prolonged. And through the arrangement of the buffer pressure spring, a gap between the worm gear and the worm can be quickly filled, so that the gap between the worm gear and the worm is effectively reduced, and the use of a user is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission, and in particular to a high-precision worm gear transmission mechanism that reduces the backlash of worm gear transmissions. Background Technology

[0002] A worm gear is a special type of gear transmission mechanism consisting of a worm and a worm wheel. It is typically used to transmit motion and power between intersecting shafts, with the intersection angle generally being 90°. The worm, resembling a bolt, acts as the driving component, while the worm wheel, similar to a helical cylindrical gear, acts as the driven component. During operation, the teeth of the worm wheel slide and roll along the helical surface of the worm. To optimize tooth contact, the worm wheel is usually designed with an arc shape along the tooth width, forming line contact with the worm rather than point contact. Worm gear drives offer advantages such as a large transmission ratio, compact structure, smooth transmission, low noise, and reverse self-locking characteristics, making them widely used in applications requiring large reduction ratios, high precision, and reverse self-locking features, such as machine tools, automation equipment, and robotics.

[0003] Worm gear drives are widely used in industrial manufacturing. However, existing worm gears still experience significant friction during rotation, and due to machining accuracy issues, the transmission clearance is also large, leading to substantial wear between the worm gear and the worm and a short service life. To address these problems, a high-precision worm gear drive mechanism that reduces the transmission clearance is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-precision worm gear transmission mechanism that reduces the backlash of the worm gear transmission. It aims to improve the problems in the prior art where the worm gear and worm still have large friction when rotating, and the transmission backlash is large due to machining accuracy issues, resulting in large wear between the worm gear and worm and short service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-precision worm gear transmission mechanism for reducing worm gear transmission backlash includes: a worm, a worm wheel meshing on the surface of the worm, and a clamping mechanism provided on the surface of the worm wheel, the clamping mechanism being used to ensure a tight fit between the worm wheel and the worm.

[0007] The above technical solution, through the setting of the clamping mechanism, facilitates a tighter contact between the worm gear and the worm, improves the transmission efficiency between the worm gear and the worm, effectively increases the service life of the worm gear and the worm, and makes it easier for users to operate.

[0008] As a further description of the above technical solution: the clamping mechanism includes a circular groove, which is formed on the surface of the worm gear, and the number of the circular grooves is several and they are evenly distributed in a ring.

[0009] The above technical solution facilitates efficient fixing of the clamping mechanism by setting the circular groove, allowing the clamping mechanism to be firmly fixed on the surface of the worm wheel, thereby improving the transmission efficiency between the worm wheel and the worm and making it easier for users to operate.

[0010] As a further description of the above technical solution: a buffer spring is fixedly connected to the surface of the inner wall of the circular groove, a fixed frame is fixedly connected to the front of the buffer spring, and a ball bearing is movably connected inside the fixed frame.

[0011] The above technical solution, through the setting of the buffer spring, facilitates the movement of the ball into the groove, thereby allowing the ball to buffer within a certain range, improving the stability of the worm gear rotation, and thus improving the stability of the worm wheel rotation, making it easier for users to operate.

[0012] As a further description of the above technical solution: a positioning spring is fixedly connected to the outer side of the fixed frame, and the outer side of the plurality of positioning springs is fixedly connected to the surface of the inner wall of the circular groove.

[0013] The above technical solution, through the setting of the positioning spring, facilitates efficient positioning of the fixed frame, facilitates quick reset of the ball bearings, and facilitates user operation.

[0014] As a further description of the above technical solution: the surface of the ball is in rolling connection with the surface of the worm.

[0015] The above technical solution effectively reduces friction between the worm gear and the worm by using the rolling connection between the ball bearing and the worm, thereby improving the efficiency of the worm gear and the worm and making it easier for users to operate.

[0016] This utility model has the following beneficial effects:

[0017] In this invention, rotating the worm gear drives the worm wheel to rotate. The ball bearings reduce direct contact between the worm wheel and the worm gear, effectively reducing friction and extending their lifespan. The positioning spring enhances the stability of the ball bearings, and the buffer spring quickly fills any gaps between the worm wheel and the worm gear, further reducing these gaps and making the invention more user-friendly.

[0018] In this invention, the rolling connection between the ball bearing and the worm effectively reduces the friction between the worm wheel and the worm, thereby improving the efficiency of the worm wheel and the worm and making it easier for users to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the worm gear structure of this utility model;

[0020] Figure 2 The structure of this utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a schematic diagram of the ball bearing structure of this utility model.

[0022] Legend:

[0023] 1. Worm gear; 2. Worm wheel; 3. Clamping mechanism; 31. Circular groove; 32. Buffer spring; 33. Fixed frame; 34. Ball bearing; 35. Positioning spring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1-3 This utility model provides an embodiment of a high-precision worm gear 2 and worm 1 transmission mechanism that reduces the transmission clearance of the worm gear 2 and worm 1. The mechanism includes a worm 1, a worm gear 2 meshing with the surface of the worm 1, and a clamping mechanism 3 on the surface of the worm gear 2. The clamping mechanism 3 ensures a tight fit between the worm gear 2 and the worm 1. The clamping mechanism 3 facilitates a tighter contact between the worm gear 2 and the worm 1, improving the transmission efficiency between them and effectively extending their service life, thus making it easier for users to operate.

[0026] Reference Figure 1-3The clamping mechanism 3 includes a circular groove 31, which is formed on the surface of the worm gear 2. The circular grooves 31 are numerous and evenly distributed in a ring. The circular grooves 31 facilitate efficient fixing of the clamping mechanism 3, ensuring it is firmly fixed to the surface of the worm gear 2. This improves the transmission efficiency between the worm gear 2 and the worm 1, and is convenient for user operation. A buffer spring 32 is fixedly connected to the inner wall of the circular groove 31. A fixing frame 33 is fixedly connected to the front of the buffer spring 32. A ball bearing 34 is movably connected inside the fixing frame 33. The buffer spring 32 allows the ball bearing 34 to move into the circular groove 31, providing a certain range of buffering and improving the stability of the worm 1's rotation, thereby improving the stability of the worm gear 2's rotation and making it convenient for user operation.

[0027] Reference Figure 1-3 A positioning spring 35 is fixedly connected to the outer side of the fixed frame 33. The outer side of the multiple positioning springs 35 is fixedly connected to the surface of the inner wall of the circular groove 31. The positioning springs 35 facilitate efficient positioning of the fixed frame 33 and quick reset of the ball 34, making it convenient for users. The surface of the ball 34 is in rolling connection with the surface of the worm 1. Through the rolling connection between the ball 34 and the worm 1, the friction between the worm wheel 2 and the worm 1 is effectively reduced, thereby effectively improving the efficiency of the worm wheel 2 and the worm 1 and making it convenient for users.

[0028] Working principle: The user rotates the worm 1, which drives the worm wheel 2 to rotate. The ball bearings 34 reduce the direct contact between the worm wheel 2 and the worm 1, thus effectively reducing the friction between them and improving their service life. The positioning spring 35 enhances the stability of the ball bearings 34, and the buffer spring 32 quickly fills any gaps between the worm wheel 2 and the worm 1, further reducing these gaps and making the system easier for the user to operate.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision worm gear transmission mechanism for reducing backlash in worm gear drives, comprising: The worm (1) is characterized in that: a worm wheel (2) is engaged on the surface of the worm (1), and a clamping mechanism (3) is provided on the surface of the worm wheel (2), the clamping mechanism (3) being used to make the worm wheel (2) and the worm (1) fit tightly together.

2. The high-precision worm gear transmission mechanism for reducing worm gear transmission backlash according to claim 1, characterized in that: The clamping mechanism (3) includes a circular groove (31), which is formed on the surface of the worm gear (2). The number of circular grooves (31) is several and they are evenly distributed in a ring.

3. The high-precision worm gear transmission mechanism for reducing worm gear transmission backlash according to claim 2, characterized in that: A buffer spring (32) is fixedly connected to the surface of the inner wall of the circular groove (31), and a fixed frame (33) is fixedly connected to the front of the buffer spring (32), and a ball bearing (34) is movably connected inside the fixed frame (33).

4. The high-precision worm gear transmission mechanism for reducing worm gear transmission backlash according to claim 3, characterized in that: The outer side of the fixed frame (33) is fixedly connected with a positioning spring (35), and the outer side of the plurality of positioning springs (35) is fixedly connected to the surface of the inner wall of the circular groove (31).

5. A high-precision worm gear transmission mechanism for reducing worm gear transmission backlash according to claim 4, characterized in that: The surface of the ball (34) is in rolling connection with the surface of the worm (1).

Images