Multi-punching-tooth riveting press forming gear

Abstract

The utility model discloses a multi-punching-tooth riveting press forming gear, and relates to the technical field of gear machining and manufacturing, the multi-punching-tooth riveting press forming gear comprises a knurled shaft pin and further comprises a connecting mechanism arranged on the outer side of the knurled shaft pin, and the connecting mechanism can reduce cost while guaranteeing the strength of the gear. The multiple sets of large driven teeth and the multiple sets of small driving teeth are all arranged on the outer side of the knurled shaft pin in a sleeving mode, a traditional large tooth is evenly divided into three identical single large driven teeth through stamping equipment, a traditional small tooth is divided into three single small driving teeth, and the unique multi-stamping-tooth riveting forming technology can meet the set working condition requirement and also can be used for manufacturing the large driven teeth and the small driving teeth. The obvious technical advantages are also shown.

Description

Technical Field

[0001] This utility model relates to the field of gear processing and manufacturing technology, and in particular to a multi-punch riveted gear. Background Technology

[0002] In the field of gear machining, commonly used gear machining methods include milling, hobbing, shaving, shaping, grinding, wire EDM, laser cutting, and hobbing. Milling uses disc milling cutters or finger milling cutters and is a forming method. This method has relatively low machining efficiency and accuracy, and is suitable for single-piece or small-batch production. Hobbing uses hobbing cutters and is a generating method. The prototype of the hobbing cutter is a helical gear with a large helix angle. Gear shaping uses gear shaper cutters. The gear shaper cutter and the workpiece are equivalent to a pair of meshing cylindrical gears. This method is suitable for generating methods other than hobbing. Gear shaving utilizes a shaving cutter to freely mesh with the gear being processed, removing very fine chips from the tooth surface through relative sliding between them. It is suitable for high-precision, mass production. Gear grinding uses a gear grinding machine and a profile grinding wheel for grinding, and is a precision machining method. Wire EDM uses electrical discharge machining to process gears, and is suitable for gear processing with high precision requirements. Laser cutting uses a CNC laser cutting machine to cut spur gears, and is suitable for processing high-precision gears. Honing utilizes the relative sliding at the meshing point and applies a certain pressure between the tooth surfaces to hone the gears, similar to gear shaving. These methods each have their own characteristics and are suitable for different production needs and gear precision requirements.

[0003] However, all of these require intelligent machine tools, which increases manufacturing costs. Conventional powder metallurgy methods are also suitable for mass production of low-cost gears, but the hardness and overall performance of conventional powder metallurgy gears are still somewhat inferior to those of gear hobbing methods. At the same time, the manufacturing cost is higher and the overall performance is worse. Summary of the Invention

[0004] This utility model provides a multi-punch riveted gear to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A multi-pronged riveted gear includes a knurled pin and a connecting mechanism disposed on the outside of the knurled pin. The connecting mechanism can reduce costs while ensuring the strength of the gear. The connecting mechanism includes multiple sets of driven large teeth and multiple sets of driving small teeth. The multiple sets of driven large teeth and multiple sets of driving small teeth are all sleeved on the outside of the knurled pin. Multiple sets of connecting parts are provided on the inner side of the driven large teeth and driving small teeth. The connecting parts are used to firmly rivet the multiple sets of driven large teeth and multiple sets of driving small teeth.

[0007] Furthermore, the connecting part includes a connecting hole, which is opened on the inner side of the ends of the multiple sets of driven large teeth and the multiple sets of driving small teeth.

[0008] Furthermore, the connecting part includes a riveting pin, which is inserted into the inner side of the connecting hole.

[0009] Furthermore, multiple sets of driven large teeth and multiple sets of driving small teeth are stacked on the outside of the flower shaft pin.

[0010] Furthermore, the multiple sets of driven large teeth and the multiple sets of driving small teeth are riveted together by the riveting pins.

[0011] Compared with existing technologies, this utility model has the following advantages: The traditional large gear is divided into three identical single-piece driven large gears using a stamping device, and the traditional small gear is split into three single-piece driving small gears. This unique multi-punch riveting forming process not only meets the requirements of the given working conditions but also demonstrates significant technical advantages. After each gear is processed, it is precisely assembled into a double-tooth configuration on a specially made riveting die using riveting pins and knurled pins. Subsequent targeted surface treatment can be performed according to actual working conditions, effectively improving the surface accuracy, strength, and overall performance of the gear. Thanks to the thinner tooth width of each single piece, stamping is more convenient and efficient, allowing the use of materials with superior strength and overall performance compared to gear hobbing. Practice shows that multi-punch riveting formed gears not only have significantly higher strength and overall performance than powder metallurgy formed gears but are also comparable to gears formed by gear hobbing, while reducing overall manufacturing costs. This achieves significant cost optimization while ensuring high performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is an exploded view of this utility model;

[0014] Figure 3 This is a cross-sectional view of the driven large tooth and the driving small tooth in this utility model.

[0015] In the picture:

[0016] 1-Knurled pin; 2-Connecting mechanism; 21-Driven large gear; 22-Driven small gear; 23-Connecting hole; 24-Riveted pin. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0018] like Figure 1-3 The multi-pronged riveted gear shown includes a knurled pin 1 and a connecting mechanism 2 disposed on the outside of the knurled pin 1. The connecting mechanism 2 reduces costs while ensuring the strength of the gear. The connecting mechanism 2 includes multiple sets of driven large teeth 21 and multiple sets of driving small teeth 22. The multiple sets of driven large teeth 21 and multiple sets of driving small teeth 22 are all sleeved on the outside of the knurled pin 1. Multiple sets of connecting parts are provided on the inner side of the driven large teeth 21 and driving small teeth 22. The connecting parts are used to connect the multiple sets of... The driven large tooth 21 and multiple sets of driving small teeth 22 are firmly riveted and formed. The connecting part includes a connecting hole 23, which is opened on the inner side of the ends of the multiple sets of driven large teeth 21 and multiple sets of driving small teeth 22. The connecting part includes a riveting pin 24, which is inserted into the inner side of the connecting hole 23. The multiple sets of driven large teeth 21 and multiple sets of driving small teeth 22 are stacked on the outer side of the flower pin 1. The multiple sets of driven large teeth 21 and multiple sets of driving small teeth 22 are riveted and formed by the riveting pin 24.

[0019] Specifically, the driven large gear 21 is composed of three identical large single-piece gears, and the driving small gear 22 is composed of three identical small single-piece gears. After all the driven large gears 21 and driving small gears 22 are machined, the three sets of driven large gears 21 are first fitted onto the outside of the knurled pins 1 using a specially made riveting die using knurled pins 1 and connecting holes 23. Then, the riveting pins 24 are inserted into the inside of the connecting holes 23, and the three sets of driving small gears 22 are fitted onto the outside of the knurled pins 1. Finally, they are riveted into double gears for use in the product. The traditional large gear is divided into three identical single-piece driven large gears 21 using a stamping machine, and the traditional small gear is split into three single-piece driving small gears 22. This unique multi-stamping riveting process can meet the predetermined requirements. The process meets the demands of different working conditions and demonstrates significant technological advantages. After each gear is machined, it is precisely assembled into a double gear on a special riveting die using the riveting pin 24 and the knurled pin 1. Subsequent surface treatments can be performed according to actual working conditions to effectively improve the surface accuracy, strength, and overall performance of the gear. Thanks to the thinner tooth width of each single gear, the stamping process is more convenient and efficient, allowing the use of materials with superior strength and overall performance compared to gear hobbing. Practice has shown that multi-stamped riveted gears not only have significantly higher strength and overall performance than powder metallurgy gears, but are also comparable to gears formed by gear hobbing. Moreover, their overall manufacturing cost is reduced by more than 45%, achieving significant cost optimization while ensuring high performance.

[0020] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

[0021] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A multi-punch riveted gear, comprising a knurled shaft pin (1), characterized in that: It also includes a connecting mechanism (2) disposed on the outside of the knurled pin (1). The connecting mechanism (2) can reduce costs while ensuring the strength of the gear. The connecting mechanism (2) includes multiple sets of driven large teeth (21) and multiple sets of driving small teeth (22). The multiple sets of driven large teeth (21) and multiple sets of driving small teeth (22) are all sleeved on the outside of the knurled pin (1). Multiple sets of connecting parts are provided on the inner side of the driven large teeth (21) and the driving small teeth (22). The connecting parts are used to firmly rivet the multiple sets of driven large teeth (21) and multiple sets of driving small teeth (22).

2. The multi-punch riveted gear according to claim 1, characterized in that: The connecting part includes a connecting hole (23), which is opened on the inner side of the ends of multiple sets of driven large teeth (21) and multiple sets of driving small teeth (22).

3. The multi-punch riveted gear according to claim 2, characterized in that: The connecting part includes a riveting pin (24), which is inserted into the inner side of the connecting hole (23).

4. The multi-punch riveted gear according to claim 1, characterized in that: Multiple sets of driven large teeth (21) and multiple sets of driving small teeth (22) are stacked on the outside of the flower pin (1).

5. The multi-punch riveted gear according to claim 3, characterized in that: Multiple sets of driven large teeth (21) and multiple sets of driving small teeth (22) are riveted together by the riveting pins (24).

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