High-strength transmission worm shaft

Abstract

The high-strength transmission worm shaft comprises a worm main shaft and a plurality of lubricating strips, the surface of the worm main shaft is provided with a plurality of spiral edge teeth, the surface of each spiral edge tooth is provided with a spiral tooth groove, the lubricating strips are installed on the inner sides of the spiral tooth grooves in an embedded mode, each spiral edge tooth is of a double-edge structure, and the spiral tooth grooves are located between the double-edge spiral edge teeth. The section of the spiral tooth groove is of a V-shaped structure, and the surface of the lubricating strip abuts against the inner side of the spiral tooth groove in an interference mode. According to the utility model, through the structural design that the graphite strip lubricating strips are embedded in the spiral edge teeth on the surface of the worm main shaft, an integral worm shaft structure is formed, and the friction of tooth surfaces in the transmission process is effectively reduced due to the self-lubricating characteristic of the graphite strips, so that the graphite strips are uniformly distributed in the transmission process, the wear rate is further reduced, and the service life of the worm is prolonged. And the lubricating effect and the structural durability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of worm shafts, in particular to a high-strength transmission worm shaft. Background Art

[0002] In the prior art, traditional transmission worm shafts usually achieve lubrication by opening oil channels inside. During the manufacturing of this type of worm shaft, special oil channels need to be opened inside the main shaft to transport lubricating oil to the tooth surface, thereby reducing friction and wear on the tooth surface to improve the smoothness of the transmission and extend the service life. Usually, this design relies on the regular injection of lubricating oil, and the oil channel structure continues to provide lubrication during the transmission process to avoid rapid wear of the tooth surface. However, due to the complexity of the oil channel design, this type of worm shaft requires additional processing during production and maintenance, and is easily affected by temperature, pressure and other conditions in actual application, resulting in unstable lubrication effect.

[0003] Although traditional worm shafts provide a certain lubrication effect through oil channel design, this solution also has obvious defects. First, the oil channel inside the worm shaft will take up a certain amount of space, which will lead to a reduction in the cross-section of the main shaft structure and weaken the overall structural strength. Especially under high load and long-term use conditions, it is more prone to deformation or damage. In addition, the existence of the oil channel not only increases the difficulty of processing, but also requires regular replenishment of lubricating oil, which increases maintenance costs. Since the lubricating oil in the oil channel cannot be evenly distributed during the transmission process, it may cause local friction to increase, further shortening the service life of the worm shaft. Therefore, traditional transmission worm shafts have certain deficiencies in lubrication effect, durability and maintainability. In view of this, research and improvement are carried out on the existing problems, and a high-strength transmission worm shaft is provided to solve the current problems. The purpose is to achieve the purpose of solving problems and improving practical value through this technology. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art or related technologies.

[0005] The utility model provides a high-strength transmission worm shaft, including a worm main shaft and a plurality of lubricating strips. The surface of the worm main shaft is provided with a plurality of spiral ridges, and the surface of each spiral ridge is provided with a spiral tooth groove. The lubricating strip is embedded and installed on the inner side of the spiral tooth groove. The worm ridge is a double-ridge structure, and the spiral tooth groove is located between the double-ridge worm ridges. The spiral tooth groove cross-section is a V-shaped structure, and the surface of the lubricating strip is in interference fit with the inner side of the spiral tooth groove. A graphite strip lubricating strip is embedded in the double-ridge worm ridge provided on the surface of the worm main shaft, forming an integral worm shaft structure. The self-lubricating property of the graphite strip effectively reduces the friction of the tooth surface during the transmission process, so that the graphite strip is evenly distributed inside the spiral ridge, thereby further reducing the wear rate and improving the lubrication effect and durability of the structure.

[0006] In a preferred embodiment, the present invention can be further configured such that the lubricating strip is made of graphite, utilizing graphite's self-lubricating properties to continuously lubricate the worm teeth during transmission. The use of graphite enables the lubricating strip to automatically provide lubrication during transmission, reducing reliance on external lubrication, extending the service life of the worm shaft, and simplifying maintenance requirements.

[0007] In a preferred embodiment, the present invention can be further configured such that the worm teeth are double-ribbed, with an included angle of 15° to 25°, and the tooth grooves are located between the double-ribbed teeth and extend along the central axis of the double-ribbed teeth. This 15° to 25° included angle design ensures that the double-ribbed worm teeth provide greater strength when bearing transmission loads and reduces tooth surface wear, effectively improving the durability of the worm shaft under high load conditions.

[0008] In a preferred embodiment, the present invention can be further configured such that the lubricating strip is made of graphite, and its cross-section matches the V-shaped groove of the spiral gear groove. The lubricating strip is designed to be replaceable, and can be easily replaced by disassembling the strip. The replaceable graphite strip lubricating strip design allows for quick replacement when the graphite strip is worn, facilitating maintenance and improving the maintenance efficiency and service life of the equipment.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the surface of the worm teeth is hardened to increase their surface strength, the double ridges of the worm teeth are arranged parallel to each other, and when the worm teeth are distributed along the circumference of the worm shaft, the angle between each worm tooth is 5° to 10°, and each worm tooth extends in a spiral shape along the axial direction of the worm shaft. By hardening the surface of the worm teeth and arranging the double ridges in parallel and extending them in a spiral, not only is the wear resistance of the tooth surface enhanced, but the worm shaft is also evenly distributed in the axial direction, providing a smooth transmission effect.

[0010] In a preferred embodiment, the present invention can be further configured such that the worm shaft is integrally formed from a single material, with a plurality of double-ribbed spiral ridges and spiral grooves formed on its surface, the double-ribbed ridges and spiral grooves being evenly distributed along the axial direction. This design allows the worm shaft to be integrally formed, reducing complex assembly steps while ensuring an even distribution of the double-ribbed ridges and spiral grooves, thereby improving the overall stability and structural strength of the worm shaft.

[0011] In a preferred embodiment, the present invention can be further configured such that the lubricating strip is embedded within the spiral tooth groove and axially extends along the entire length of the spiral tooth groove, ensuring a continuous distribution of graphite strips along the entire transmission worm shaft. The lubricating strip is formed using high-pressure rolling to reduce the wear rate of the lubricating strip. By arranging the lubricating strip along the entire axial length and using a high-pressure rolling process, the continuous and uniform distribution of the graphite strips is ensured, resulting in a lower wear rate during the transmission process, thereby extending the service life of the worm shaft.

[0012] The beneficial effects achieved by the utility model are:

[0013] 1. In the utility model, an integral worm shaft structure is formed by embedding a graphite lubrication strip inside the spiral teeth on the surface of the worm main shaft. The self-lubricating property of the graphite strip effectively reduces the friction on the tooth surface during the transmission process, so that the graphite strip is evenly distributed during the transmission process, further reducing the wear rate, and improving the lubrication effect and structural durability.

[0014] 2. In the present invention, by hardening the surface of the double-edge spiral teeth and adopting an angle of 15° to 25°, the wear resistance of the tooth surface is improved, so that the worm shaft still has good durability under high load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the worm main shaft and lubricating strip according to one embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the spiral tooth surface and its partially enlarged structure of an embodiment of the present utility model.

[0018] Reference numerals:

[0019] 100, worm shaft; 110, worm tooth; 111, worm groove; 200, lubricating strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0021] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0022] The following is combined with Figure 1-Figure 3Some embodiments of the present invention provide a high-strength transmission worm shaft.

[0023] The present invention provides a high-strength transmission worm shaft, comprising a worm main shaft 100 and a plurality of lubricating strips 200. The surface of the worm main shaft 100 is provided with a plurality of spiral ridges 110, each of which is provided with a spiral groove 111 for accommodating the lubricating strip 200. The lubricating strip 200 is embedded and installed inside the spiral groove 111, forming an interference fit with the inner wall of the spiral groove 111. The spiral ridges 110 are double-ridged structures with an included angle of 15° to 25°. The spiral grooves 111 are located between the double-ridged spiral ridges 110 and have a V-shaped cross-section, so that the cross-sectional shape of the lubricating strip 200 matches the V-shaped structure, ensuring a secure insertion.

[0024] In this embodiment, the lubricating strip 200 is made of graphite. Its self-lubricating properties continuously lubricate the spiral tooth 110 during transmission, reducing friction. By embedding the lubricating strip 200 within the spiral tooth groove 111 and extending it axially, the lubricating strip 200 is uniformly distributed, ensuring that the graphite strip is in constant contact with the tooth surface of the spiral tooth 110 during transmission, significantly improving lubrication and structural durability.

[0025] Furthermore, the surface of the worm teeth 110 is hardened, forming a 0.1 to 0.3 mm thick layer, enhancing wear resistance and ensuring strength and stability under high-load transmission conditions. The double-ribbed worm teeth 110 are distributed circumferentially around the worm shaft 100, with spacing of 5 to 10 degrees between each worm tooth 110. They extend in a spiral pattern along the axial direction of the worm shaft 100, ensuring smooth contact and transmission during the worm shaft transmission process.

[0026] In another embodiment, the present invention further optimizes the structure of Example 1, enhancing the worm shaft's ease of maintenance. Specifically, the lubricating strip 200 in this embodiment is designed to be replaceable, enabling quick replacement after wear. By providing removal mechanisms at both ends of the spiral tooth groove 111, users can easily remove worn lubricating strips 200 and install new ones, extending the device's service life and reducing maintenance costs.

[0027] In this embodiment, the worm shaft 100 is a single-piece, integrally machined structure with a plurality of double-ridged spiral worm teeth 110 and spiral grooves 111 formed on its surface. These double-ridged spiral worm teeth 110 and spiral grooves 111 are evenly distributed along the axial direction to ensure transmission stability. Furthermore, the graphite lubricating strip 200 is formed using high-pressure rolling, resulting in higher density and strength, thereby reducing wear and extending the service life of the worm shaft.

[0028] This embodiment also optimizes the design of the spiral slot 111, with a depth of 0.5 to 2 mm and a width of 1 to 3 mm. This ensures the axial stability of the lubricating strip 200, preventing loosening or falling out during high-load transmission. This optimized size allows the graphite strip to fit tightly within the spiral slot 111 during transmission, further enhancing lubrication and transmission efficiency.

[0029] In another embodiment, the arrangement of the double-ribbed spiral teeth 110 is optimized to accommodate higher-intensity transmission conditions. Specifically, the spiral teeth 110 are arranged in a variable-spacing spiral pattern along the axial direction of the worm shaft 100. This increases the spacing between the double-ribbed teeth in areas with higher transmission loads, resulting in a higher load-bearing capacity. Furthermore, the surface hardened layer of the spiral teeth 110 is increased to a thickness of at least 0.3 mm to further enhance wear resistance.

[0030] Furthermore, in this embodiment, lubricating strip 200 undergoes a microscopic surface treatment, imparting a fine mesh texture to its surface. This, when embedded within the spiral tooth grooves 111, further enhances the lubricant's adhesion and lubrication effectiveness. This microscopic surface treatment allows lubricating strip 200 to achieve more efficient self-lubrication during transmission, improving the stability and durability of the entire worm shaft.

[0031] Throughout this specification, terms such as "one embodiment," "some embodiments," or "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-strength transmission worm shaft, characterized in that: include: A worm main shaft and several lubricating strips, the surface of the worm main shaft is provided with several worm ridges, and the surface of each worm ridge is provided with a worm groove, the lubricating strip is embedded and installed on the inner side of the worm groove, the worm ridge is a double-ridge structure, and the worm groove is located between the double-ridge worm ridges, the cross-section of the worm groove is a V-shaped structure, and the surface of the lubricating strip is in interference contact with the inner side of the worm groove.

2. A high-strength transmission worm shaft according to claim 1, characterized in that: The lubricating strip is made of graphite to utilize the self-lubricating property of graphite to continuously lubricate the spiral teeth during the transmission process.

3. The high-strength transmission worm shaft according to claim 1, characterized in that: The spiral teeth are double-ribbed teeth with an included angle of 15° to 25°. The spiral tooth grooves are located between the double-ribbed teeth and extend along the central axis of the double-ribbed teeth.

4. The high-strength transmission worm shaft according to claim 1, characterized in that: The lubricating strip is made of graphite, and its cross-sectional shape matches the V-shaped groove of the spiral gear groove. The lubricating strip adopts a replaceable design and can be easily replaced by a disassembly device.

5. The high-strength transmission worm shaft according to claim 1, characterized in that: The surface of the worm teeth is hardened to increase its surface strength. The double edges of the worm teeth are arranged parallel to each other. When the worm teeth are distributed circumferentially along the worm main shaft, the interval angle between each worm tooth is 5° to 10°, and each worm tooth extends in a spiral form along the axial direction of the worm main shaft.

6. The high-strength transmission worm shaft according to claim 1, characterized in that: The worm main shaft is a single material integrally processed and formed structure, and a plurality of double-ridged worm spiral ridges and spiral tooth grooves are formed on its surface, and the double-ridged teeth and spiral tooth grooves are evenly distributed along the axial direction.

7. The high-strength transmission worm shaft according to claim 1, characterized in that: The lubricating strip is embedded in the spiral tooth groove and arranged along the entire length of the spiral tooth groove in the axial direction to ensure that the graphite strip is continuously distributed along the entire transmission worm shaft. The lubricating strip is formed by high-pressure rolling to reduce the wear rate of the lubricating strip.

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