A thread rolling wheel for producing a high-strength bolt

Abstract

This utility model relates to the field of screw manufacturing technology and discloses a thread rolling wheel for producing screws for high-speed rail connectors, including an inner bushing, an outer sleeve, a first end cap, and a second end cap. The outer surface of the inner bushing has rectangular limiting grooves spaced at equal intervals. The outer sleeve is fitted onto the outer side of the inner bushing, and the inner surface of the outer sleeve has rectangular limiting strips spaced at equal intervals corresponding to the rectangular limiting grooves. Threaded threads are spaced at equal intervals on the outer side of the outer sleeve. The inner bushing has a first end cap and a second end cap at its two ends, respectively. This novel design is modular, facilitating installation and disassembly. It allows for individual disassembly and replacement after threaded thread wear, deformation, or damage to other components, reducing unnecessary waste. Furthermore, the rectangular limiting strips, rectangular limiting grooves, and positioning posts ensure a tight and secure connection between the components, making it suitable for widespread use.

Description

Technical Field

[0001] This utility model relates to the field of screw manufacturing technology, specifically to a thread rolling wheel for producing screws for high-speed rail connectors. Background Technology

[0002] High-speed rail connectors are specialized components used in high-speed railway systems to achieve mechanical, electrical, or pneumatic connections, such as couplers, buffers, and rail connecting plates. They are used for physical connections and force transmission between vehicles or track structures. Many high-speed rail connectors require the use of screws for connection and fixing.

[0003] Screws are made by cold heading equipment, which extrudes wire into screw heads and shanks, and then uses thread rolling wheels on a thread rolling machine to process thread grooves.

[0004] Existing thread rolling wheels used in the production of screws for iron connectors are ordinary thread rolling wheels, which have precision threads drilled on the outside of a cylindrical steel body. These wheels require complete replacement after the threads wear or deform, which is wasteful. Therefore, we propose a new type of thread rolling wheel for the production of screws for high-speed rail connectors. Utility Model Content

[0005] (a) Technical problems to be solved:

[0006] To address the shortcomings of existing technologies, this utility model provides a thread rolling wheel for the production of screws for high-speed rail connectors, thus solving the problems mentioned in the background art.

[0007] (II) Technical Solution:

[0008] This utility model provides the following technical solution: a thread rolling wheel for producing screws for high-speed rail connectors, comprising an inner bushing, an outer bushing, a first end cap, and a second end cap;

[0009] The outer surface of the inner bushing is provided with rectangular limiting grooves at equal intervals. The outer sleeve is sleeved on the outer side of the inner bushing. The inner surface of the outer sleeve is provided with rectangular limiting strips at equal intervals corresponding to the rectangular limiting grooves. The outer side of the outer sleeve is provided with threaded threads at equal intervals. The two ends of the inner bushing are respectively provided with a first end cap and a second end cap.

[0010] Furthermore, the first end cap and the second end cap are provided with positioning posts at equal intervals on the side near the inner bushing, and the outer sleeve is provided with positioning holes at equal intervals on both sides.

[0011] Furthermore, bolt holes are equidistantly provided on one side of the first end cap and the second end cap located outside the shaft groove, and threaded grooves corresponding to the bolt holes are equidistantly provided on both sides of the inner bushing.

[0012] Furthermore, a keyway is provided on the inner side of the inner bushing.

[0013] Furthermore, both the first end cap and the second end cap have a through-groove on one side.

[0014] Furthermore, four sets of rectangular limiting grooves and rectangular limiting strips are provided.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] Place the outer sleeve over the outer side of the inner sleeve, then insert the locating pin into the locating hole to connect the first end cap and the second end cap to the two ends of the inner sleeve and the outer sleeve. Insert the bolt into the bolt hole and screw it into the thread groove to fix the first end cap and the second end cap to the two ends of the inner sleeve and the outer sleeve, thus completing the assembly of the thread rolling wheel. After the thread rolling thread wears or deforms, the outer sleeve can be disassembled and replaced, while the inner sleeve, the first end cap, and the second end cap can continue to be used.

[0017] After the outer sleeve is fitted onto the outside of the inner sleeve, multiple rectangular limiting strips are inserted into the rectangular limiting grooves, so that when the inner sleeve rotates, it can drive the outer sleeve to rotate, thereby rolling the threads of the high-speed rail connecting parts with screws through thread rolling. Multiple positioning pins on one side of the first end cover and the second end cover are inserted into the corresponding positioning holes, which can improve the connection between the first end cover and the second end cover and the outer sleeve.

[0018] The thread rolling wheel used in the production of screws for high-speed rail connectors adopts an assembly design, which is convenient for installation and disassembly. It can be disassembled and replaced separately after the thread rolling thread is worn, deformed or other parts are damaged, reducing unnecessary waste. Furthermore, the setting of rectangular limit strips, rectangular limit grooves and positioning columns ensures that the connection between the components is tight and firm. Attached Figure Description

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

[0020] Figure 2 This is a schematic diagram of the inner bushing structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the outer sleeve of this utility model;

[0022] Figure 4 This is a schematic diagram of the second end cap structure of this utility model;

[0023] In the diagram: 1. Inner bushing; 101. Rectangular limiting groove; 102. Threaded groove; 103. Keyway; 2. Outer bushing; 201. Rolled thread; 202. Rectangular limiting strip; 203. Positioning hole; 3. First end cover; 4. Second end cover; 5. Shaft groove; 6. Positioning pin; 7. Bolt hole. 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] Please see Figures 1-4 In this embodiment of the utility model, it includes an inner bushing 1, an outer bushing 2, a first end cap 3, and a second end cap 4.

[0026] The outer surface of the inner bushing 1 is provided with rectangular limiting grooves 101 at equal intervals. The outer sleeve 2 is sleeved on the outer side of the inner bushing 1. The inner surface of the outer sleeve 2 is provided with rectangular limiting strips 202 corresponding to the rectangular limiting grooves 101 at equal intervals. The outer side of the outer sleeve 2 is provided with threaded threads 201 at equal intervals. The two ends of the inner bushing 1 are respectively provided with a first end cap 3 and a second end cap 4.

[0027] The first end cap 3 and the second end cap 4 are provided with positioning pins 6 at equal intervals on the side close to the inner bushing 1. The outer sleeve 2 is provided with positioning holes 203 at equal intervals on both sides. After the first end cap 3 and the second end cap 4 are fixed at both ends of the inner bushing 1, the positioning pins 6 are inserted into the positioning holes 203 to improve the connection between the outer sleeve 2 and the inner bushing 1.

[0028] The first end cap 3 and the second end cap 4 are provided with bolt holes 7 at equal intervals on one side outside the shaft groove 5. The inner bushing 1 is provided with threaded grooves 102 at equal intervals on both sides corresponding to the bolt holes 7. The first end cap 3 and the second end cap 4 at both ends of the inner bushing 1 can be fixed by inserting the bolt into the bolt hole 7 and screwing it into the threaded groove 102.

[0029] The inner bushing 1 has a keyway 103 on its inner side. The keyway 103 facilitates the use of a flat key to fit the inner bushing 1 onto the outside of the shaft.

[0030] The first end cap 3 and the second end cap 4 each have a shaft groove 5 through one side. The opening of the shaft groove 5 ensures that the first end cap 3 and the second end cap 4 will not affect the inner bushing 1 being fitted on the outside of the shaft.

[0031] The rectangular limiting groove 101 and the rectangular limiting strip 202 are each provided in four sets. The four sets of rectangular limiting grooves 101 and rectangular limiting strips 202 enable the inner bushing 1 to rotate, which in turn drives the outer bushing 2 to rotate.

[0032] The working principle of this utility model is as follows: After aligning the rectangular limiting strip 202 with the rectangular limiting groove 101, the outer sleeve 2 is fitted onto the outside of the inner bushing 1. Then, the positioning pins 6 on one side of the first end cap 3 and the second end cap 4 are aligned with the positioning holes 203 on both sides of the outer sleeve 2 and inserted, so that the first end cap 3 and the second end cap 4 are connected to the two ends of the inner bushing 1 and the outer sleeve 2. The bolts are inserted into the bolt holes 7 and screwed into the thread grooves 102, fixing the first end cap 3 and the second end cap 4 to the two ends of the inner bushing 1 and the outer sleeve 2, thus completing the assembly of the thread rolling wheel. After the thread rolling thread 201 is worn or deformed, the outer sleeve 2 can be disassembled for replacement. Replacement: Inner bushing 1, first end cap 3, and second end cap 4 can continue to be used, reducing unnecessary waste. After outer sleeve 2 is fitted onto the outside of inner bushing 1, multiple rectangular limiting strips 202 are inserted into rectangular limiting grooves 101, so that when inner bushing 1 rotates, it can drive outer sleeve 2 to rotate. Thus, the high-speed rail connector is threaded with screws through thread rolling 201. First end cap 3 and second end cap 4 are fixed to both ends of inner bushing 1 by bolts. Multiple positioning pins 6 on one side of first end cap 3 and second end cap 4 are inserted into corresponding positioning holes 203, which can improve the connection between first end cap 3 and second end cap 4 and outer sleeve 2.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A thread rolling wheel for producing screws for high-speed rail connectors, comprising an inner bushing (1), an outer bushing (2), a first end cap (3), and a second end cap (4); characterized in that The inner bushing (1) has rectangular limiting grooves (101) equidistantly opened on the outer surface. The outer sleeve (2) is sleeved on the outer side of the inner bushing (1). The inner surface of the outer sleeve (2) is provided with rectangular limiting strips (202) corresponding to the rectangular limiting grooves (101) equidistantly opened. The outer sleeve (2) is provided with threaded threads (201) equidistantly opened on the outer side. The inner bushing (1) is provided with a first end cap (3) and a second end cap (4) at both ends.

2. The thread rolling die for high-strength steel fastener production according to claim 1, characterized in that: The first end cap (3) and the second end cap (4) are provided with positioning pins (6) at equal intervals on the side close to the inner bushing (1), and the outer sleeve (2) is provided with positioning holes (203) at equal intervals on both sides.

3. The thread rolling die for high-strength steel fastener production according to claim 1, characterized in that: The first end cap (3) and the second end cap (4) are provided with bolt holes (7) at equal intervals on one side outside the shaft groove (5), and the inner bushing (1) is provided with threaded grooves (102) at equal intervals on both sides corresponding to the bolt holes (7).

4. The thread rolling die as claimed in claim 1, wherein: The inner bushing (1) has a keyway (103) on its inner side.

5. The thread rolling die as claimed in claim 1, wherein: The first end cap (3) and the second end cap (4) both have a shaft groove (5) through one side.

6. The thread rolling die as claimed in claim 1, wherein: The rectangular limiting groove (101) and the rectangular limiting strip (202) are each provided with four sets.

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