Internal thread axial roller

Abstract

The utility model discloses a thread roller, belongs to the technical field of thread rolling, and particularly relates to an internal thread axial roller which comprises an upper cover plate, a rolling assembly, a middle plate, a gear ring, a shell, an adjusting ring and a tail handle. The middle plate is installed on the gear ring, one end of the rolling assembly is installed on the middle plate and extends to the gear ring to be matched with the gear ring, the upper cover plate is installed at the other end of the rolling assembly, and the adjusting ring is installed below the gear ring. The shell is located in a cavity formed by the adjusting ring and the gear ring, the tail handle is located at the bottom of the adjusting ring, and one end of the tail handle extends into the cavity to be connected with the shell. According to the thread rolling tool, the investment cost is reduced, the debugging difficulty is lowered, and the specific structure of the thread rolling tool is simplified; operation is simple, adjustment is not needed, and maintenance is efficient.

Description

Technical Field

[0001] This utility model discloses a threaded roller, belonging to the field of thread rolling technology, specifically relating to an internal thread axial roller. Background Technology

[0002] Thread rolling technology belongs to the fields of mechanical manufacturing, metal forming and processing, and surface strengthening of metal parts. It is a non-cutting machining process that uses tools to plastically deform metal materials to form threads on the workpiece. Threads formed in this way have high dimensional accuracy, surface quality, and material strength, and the production efficiency is also high.

[0003] Thread rolling technology originated in the early 20th century. With the development of metal plastic deformation theory and the advancement of practical applications, it has gradually become a highly efficient and energy-saving precision forming process. The background of this technology mainly includes the following aspects: Materials science and mechanics foundation: Thread rolling relies on the plastic deformation capacity of metallic materials, that is, under certain pressure, metallic materials can undergo permanent shape changes without destroying their internal continuity. This requires the materials used to have good plasticity and strain hardening properties. Advances in mechanical manufacturing technology: With the improvement of mold design and manufacturing precision, and the development of high-efficiency, high-precision rolling equipment, thread rolling technology has been realized and gradually improved. This technology uses special thread rolling wheels or dies to compress the workpiece, thereby forming threads. Energy saving and environmental protection requirements: Compared with traditional cutting methods, thread rolling belongs to the category of chipless processing, which not only reduces the generation of cutting waste but also reduces energy consumption, meeting the requirements of modern industrial production for green manufacturing and sustainable development. The need to improve quality and reduce costs: Thread rolling produces threads with high surface finish, improved fatigue strength and tensile strength, while also increasing production efficiency and reducing unit cost. Therefore, it has been widely used in many industries such as aerospace, automobile manufacturing, and fastener production.

[0004] Disadvantages: High material requirements: Thread rolling has specific requirements for the plasticity and hardness of the workpiece material. It is not suitable for materials with excessively high or low hardness or poor plasticity. For example, materials with excessively high hardness may not be able to form threads through rolling or may cause rapid wear of the rollers. Strict initial blank size control: Before thread rolling, the blank size must be accurate and consistent. Otherwise, excessive size may lead to excessive roller pressure and equipment damage, or insufficient size may prevent the formation of a complete thread. Equipment investment and mold costs: Thread rolling equipment and its matching roller molds are usually more expensive than ordinary cutting machine tools, especially when customizing molds of special specifications, resulting in higher initial investment costs. Difficulty in process adjustment: Once the rolling parameters are determined, changing the thread size or type often requires replacing the mold and readjusting the process parameters, which increases the challenge to production flexibility. Difficulty in quality control: During thread rolling, improper operation or poor equipment condition can easily lead to defects such as inaccurate thread shape, increased thread root diameter, and twisted thread profile. These require precise quality control methods for detection and prevention. Not applicable to complex or non-standard threads: For non-standard threads with unusual pitch, large diameter changes, special shapes, or other non-standard threads, the application of thread rolling technology is limited due to the lack of readily available roller molds. Utility Model Content

[0005] Purpose of the utility model: To provide an internally threaded axial roller to solve the problems mentioned above.

[0006] Technical solution: An internal thread axial roller, comprising: an upper cover plate, a rolling assembly, an intermediate plate, a gear ring, a housing, an adjusting ring, and a tail shank;

[0007] The intermediate plate is mounted on the gear ring, one end of the rolling assembly is mounted on the intermediate plate and extends to the gear ring to cooperate with it, the upper cover plate is mounted on the other end of the rolling assembly, the adjusting ring is mounted under the gear ring, the housing is located in the cavity formed by the adjusting ring and the gear ring, and the tail shank is located at the bottom of the adjusting ring and one end extends into the cavity to connect with the housing.

[0008] In a further embodiment, the gear ring is internally meshed by a plurality of gears.

[0009] In a further embodiment, the rolling assembly consists of a plurality of rollers, the number of which is the same as the number of gears, and the rollers and gears are connected by an eccentric shaft.

[0010] In a further embodiment, the housing is provided with a mounting groove for mounting the gear.

[0011] In a further embodiment, the eccentric shaft is rotatably mounted on the intermediate plate via ball bearings.

[0012] In a further embodiment, the upper cover plate is fixedly connected to the intermediate plate by a first screw, and a locating pin is fitted onto the first screw.

[0013] In a further embodiment, the adjusting ring is provided with a second screw to fix the adjusting ring to the outside of the housing.

[0014] In a further embodiment, the bottom of the adjusting ring is provided with a chip baffle plate fixedly connected by a third screw, and the chip baffle plate is sleeved on the tail shank.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The adjustment method has been changed; it is no longer a fixed structure but uses a gear ring adjustment method, and the precision is adjustable.

[0017] 2. The rolling process also differs from traditional processing methods.

[0018] 3. The fixed structure increases the support structure, improving product quality stability and the life of the rolling rollers.

[0019] 4. This roller reduces investment costs, lowers debugging difficulty, and simplifies the structure of the thread rolling tool for internal thread rolling; it is easy to operate, requires no adjustment, and is highly efficient to maintain. Attached Figure Description

[0020] Figure 1 This is an isometric drawing of this utility model.

[0021] Figure 2 This is a cross-sectional view of the present invention.

[0022] Figure 3 This is an exploded view of this utility model.

[0023] Reference numerals: 1. Top cover plate; 2. First screw; 3. Roller; 4. Eccentric shaft; 41. Positioning pin; 5. Intermediate plate; 6. Gear ring; 7. Housing; 8. Adjusting ring; 9. Second screw; 10. Tail handle; 11. Chip baffle; 12. Third screw; 13. Gear. Detailed Implementation

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

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] An internal thread axial roller includes: an upper cover plate 1, a rolling assembly, an intermediate plate 5, a gear ring 6, a housing 7, an adjusting ring 8, and a tail shank 10;

[0028] In one embodiment, such as Figures 1 to 3 As shown, the intermediate plate 5 is mounted on the gear ring 6, one end of the rolling assembly is mounted on the intermediate plate 5 and extends to the gear ring 6 to cooperate with it, the upper cover plate 1 is mounted on the other end of the rolling assembly, the adjusting ring 8 is mounted under the gear ring 6, the housing 7 is located in the cavity formed by the adjusting ring 8 and the gear ring 6, and the tail shank 10 is located at the bottom of the adjusting ring 8 and one end extends into the cavity to connect with the housing 7.

[0029] In one embodiment, such as Figures 1 to 3 As shown, the gear ring 6 is internally meshed with several gears 13.

[0030] In one embodiment, such as Figures 1 to 3 As shown, the rolling assembly consists of several rollers 3, the number of which is the same as the number of gears 13, and the rollers 3 and the gears 13 are connected by an eccentric shaft 4.

[0031] In one embodiment, such as Figures 1 to 3 As shown, the housing 7 is provided with a mounting groove for mounting the gear 13.

[0032] In one embodiment, such as Figures 1 to 3 As shown, the eccentric shaft 4 is rotatably mounted on the intermediate plate 5 via ball bearings.

[0033] In one embodiment, such as Figures 1 to 3 As shown, the upper cover plate 1 is fixedly connected to the middle plate 5 by a first screw 2, and a positioning pin 41 is sleeved on the first screw 2.

[0034] In one embodiment, such as Figures 1 to 3 As shown, the adjusting ring 8 is provided with a second screw 9 to fix the adjusting ring 8 to the outside of the housing 7.

[0035] In one embodiment, such as Figures 1 to 3 As shown, the bottom of the adjusting ring 8 is provided with a chip baffle 11 fixedly connected by a third screw 12, and the chip baffle 11 is sleeved on the outside of the tail shank 10.

[0036] Working Principle: Primarily based on the principle of plastic deformation. The specific process is as follows: Thread rolling tools typically consist of one or more rolling wheels with tooth profiles that perfectly match the shape of the thread to be processed. During thread rolling, the high-speed rotating rolling wheels apply significant axial pressure and rolling friction to the workpiece surface. Under this strong pressure, the workpiece material (such as steel bars) undergoes plastic deformation as it passes over the rolling wheels, rather than being cut away, thus forming a continuous and precise thread shape on the workpiece surface. Because the thread formed by rolling is generated through material flow, the thread fibers are continuous without obvious cut surfaces, thereby improving the thread's strength and wear resistance, while avoiding problems such as burrs and stress concentrations generated during machining. The entire thread rolling process is highly efficient and fast, not only improving production efficiency but also facilitating chip-free or low-chip machining, making it more environmentally friendly and energy-saving.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An internally threaded axial roller, characterized in that, include: Top cover plate, rolling assembly, intermediate plate, gear ring, housing, adjusting ring, and tailstock; The intermediate plate is mounted on the gear ring, one end of the rolling assembly is mounted on the intermediate plate and extends to the gear ring to cooperate with it, the upper cover plate is mounted on the other end of the rolling assembly, the adjusting ring is mounted under the gear ring, the housing is located in the cavity formed by the adjusting ring and the gear ring, and the tail shank is located at the bottom of the adjusting ring and one end extends into the cavity to connect with the housing.

2. The internally threaded axial roller according to claim 1, characterized in that, The gear ring is internally meshed by several gears.

3. The internally threaded axial roller according to claim 2, characterized in that, The rolling assembly consists of several rollers, the number of which is the same as the number of gears, and the rollers and gears are connected by an eccentric shaft.

4. The internally threaded axial roller according to claim 2, characterized in that, The housing is provided with a mounting groove for mounting the gear.

5. The internally threaded axial roller according to claim 3, characterized in that, The eccentric shaft is rotatably mounted on the intermediate plate via ball bearings.

6. The internally threaded axial roller according to claim 1, characterized in that, The upper cover plate is fixedly connected to the middle plate by a first screw, and a positioning pin is sleeved on the first screw.

7. The internally threaded axial roller according to claim 1, characterized in that, The adjusting ring is provided with a second screw to fix the adjusting ring to the outside of the housing.

8. The internally threaded axial roller according to claim 1, characterized in that, The bottom of the adjusting ring is provided with a chip baffle plate fixedly connected by a third screw, and the chip baffle plate is sleeved on the tail shank.

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