A sheet torsion spring assembly assembling tool

Abstract

The utility model belongs to vehicle parts assembly technical field, specifically discloses a kind of sheet torsion spring assembly assembly tool, including vertical machine tool, working surface, stand, roof and press, and working surface is provided with press cover tool, and press cover tool includes base, unloading groove, positioning cylinder, side support plate, clamping plate and screw rod. Through press, positioning cylinder is pressed, and torsion spring is pressed into the inside of torsion spring cover in swing arm end, and unloading groove provides press-in space, and positioning cylinder and screw rod ensure that torsion spring is accurately pre-positioned, and side support plate and clamping plate enhance stability. The utility model solves the problems of traditional assembly, such as high labor intensity, low safety and poor precision, realizes mechanization and standardized assembly, and improves production efficiency and product reliability.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle parts assembly technology, and specifically relates to an assembly tooling for leaf torsion spring assemblies. Background Technology

[0002] Leaf torsion spring assemblies are key load-bearing and vibration-damping components in heavy-duty truck chassis systems, such as... Figure 5 As shown, the leaf torsion spring assembly consists of a torsion spring 17, a swing arm 14, a torsion bar 15, and a torsion spring sleeve 16. The torsion bar 15 connects the upper and lower swing arms to form a U-shaped structure. The torsion spring sleeve 16 is welded to the through hole of the swing arm 14. The torsion spring 17 is inserted into the torsion spring sleeve 16 and is interference-fitted with the torsion spring sleeve 16. The torsion bar torsion and the swing arm swing buffer the impact and vibration of the road surface, while bearing the vehicle load and assisting in controlling the wheel movement trajectory, thereby improving the smoothness and handling stability of heavy truck driving.

[0003] In existing technologies, the assembly of leaf torsion spring assemblies is carried out manually with the aid of tools such as wrenches and iron bars. The assembly process relies on the experience and physical strength of the operators. The assembly of torsion springs requires overcoming large torques, which not only results in extremely high labor intensity but also poses a safety hazard of injury due to spring rebound. This is especially true for leaf torsion springs used in heavy trucks, where the torque value is even higher, making the safety risks even more significant. Furthermore, the traditional assembly process lacks precise positioning and limiting mechanisms, making it difficult to ensure the consistency of the assembly angles of the torsion bar, torsion spring, and rocker arm. This can easily lead to fatigue damage of the assembly and shorten its service life. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects in the existing technology and provide a tooling for assembling leaf torsion spring assemblies.

[0005] This utility model provides a leaf torsion spring assembly assembly tooling, including a vertical machine tool, the top of which is a working surface, columns are provided at the four corners of the top of the working surface, a top plate is provided at the top of the columns, and a press is provided at the bottom of the top plate; A pressure sleeve fixture is also provided on the working surface. The position of the pressure sleeve fixture is adapted to the output end of the press, so that the press applies pressure to the pressure sleeve fixture to press the torsion spring into the torsion spring sleeve at the end of the swing arm. The pressing fixture includes a base with a stress relief groove at its center. The swing arm is placed on the top of the base, and the bottom of the torsion spring sleeve extends into the stress relief groove. A positioning cylinder is provided on the top of the base for positioning the torsion spring. The position of the positioning cylinder is adapted to the press so that the output end of the press applies pressure to the positioning cylinder.

[0006] A further embodiment is that mounting platforms are provided on both sides of the base, and side support plates are provided on the mounting platforms. The side support plates are connected to the mounting platforms by bolts. The positioning cylinder is located between the two side support plates.

[0007] A further embodiment is that a clamping plate is provided on the inner side of the side support plate, and the two clamping plates pre-clamp the positioning cylinder.

[0008] A further embodiment is that the positioning cylinder has a threaded hole on its front side, and a screw is provided in the threaded hole. The end of the screw is screwed into the threaded hole and abuts against the torsion spring.

[0009] A further embodiment is that the depth of the stress relief groove is the same as the length of one end of the torsion spring extending out of the torsion spring sleeve.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a press to apply pressure, replacing manual wrench or iron rod operation, significantly reducing labor intensity, preventing injury from spring rebound, and improving safety. A pressure-relieving groove is created in the center of the base, allowing the bottom of the torsion spring sleeve to extend within it, preventing interference during pressing, ensuring accurate pressing depth, and reducing the risk of component damage.

[0011] This invention uses a positioning cylinder to pre-position the torsion spring, and combines it with auxiliary structures such as side support plates and clamping plates to ensure that the assembly angle between the torsion spring and the swing arm is consistent, thereby improving assembly accuracy and extending the service life of the assembly. A screw is installed on the positioning cylinder, which, after being screwed in, abuts against the torsion spring to prevent displacement during pressing, further ensuring assembly stability.

[0012] The depth of the stress relief groove in this invention is the same as the length of the torsion spring extending from the torsion spring sleeve, ensuring that the pressing process is in place, avoiding over-pressing or under-pressing, and guaranteeing assembly quality. Attached Figure Description

[0013] The following figures are for illustrative purposes only and are not intended to limit the scope of the present invention. Figure 1 : A schematic diagram of the structure of this utility model; Figure 2 Exploded view of the press sleeve tooling structure; Figure 3 : Assembly diagram of leaf torsion spring assembly; Figure 4 Exploded view of the assembly structure of the leaf torsion spring assembly; Figure 5 Schematic diagram of leaf torsion spring assembly; In the diagram: 1. Vertical machine tool; 2. Working surface; 3. Top plate; 4. Press; 5. Pressing sleeve fixture; 6. Plate torsion spring assembly; 7. Base; 8. Unloading groove; 9. Side support plate; 10. Mounting platform; 11. Clamping plate; 12. Positioning cylinder; 13. Screw; 14. Swing arm; 15. Torsion bar; 16. Torsion spring sleeve; 17. Torsion spring. Detailed Implementation

[0014] To make the objectives, technical solutions, design methods, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0015] like Figure 1 As shown, this utility model provides an assembly fixture for a leaf torsion spring assembly 6, including a vertical machine tool 1 with a working surface 2 at its top. Columns are positioned at the four corners of the working surface 2, and a top plate 3 is mounted on the top of each column. A press 4 is mounted at the bottom of the top plate 3. A pressing sleeve fixture 5 is provided on the working surface 2, its position corresponding to the output end of the press 4, allowing the press 4 to apply pressure to the pressing sleeve fixture 5, thereby pressing the torsion spring 17 into the torsion spring sleeve 16 at the end of the rocker arm 14. Figure 2 and Figure 5 As shown, the pressure sleeve fixture 5 includes a base 7 with a pressure relief groove 8 at its center. A swing arm 14 is placed on top of the base 7, and the bottom of a torsion spring sleeve 16 extends into the pressure relief groove 8. A positioning cylinder 12 is provided on the top of the base 7 to pre-position the torsion spring 17. Its position is adapted to the output end of the press 4, allowing the press 4 to directly apply pressure to the positioning cylinder 12. Mounting platforms 10 are provided on both sides of the base 7. Side support plates 9 are bolted to the mounting platforms 10, and the positioning cylinder 12 is located between the two side support plates 9. Clamping plates 11 are provided on the inner side of the side support plates 9. The two clamping plates pre-clamp the positioning cylinder 12 to enhance its stability and prevent it from shifting under pressure. The press 4 presses the positioning cylinder 12 downward through the output end. The positioning cylinder 12 transmits the force to the torsion spring 17, so that the torsion spring 17 is smoothly pressed into the torsion spring sleeve 16. At the same time, the stress relief groove 8 provides space for the bottom of the torsion spring sleeve 16 to avoid interference. The side support plate 9 and the clamping plate 11 ensure that the positioning cylinder 12 remains vertical and stable during the pressing process.

[0016] In this embodiment, the positioning cylinder 12 has a threaded hole on its front side, and a screw 13 is installed in the threaded hole. The end of the screw 13 is screwed into the threaded hole and abuts against the torsion spring 17. This fixes the position of the torsion spring 17 before assembly, preventing the torsion spring 17 from sliding or rotating during the pressing process, ensuring assembly accuracy and consistency. The depth of the stress relief groove 8 is the same as the length of one end of the torsion spring 17 extending out of the torsion spring sleeve 16, ensuring that when the torsion spring 17 is pressed into the torsion spring sleeve 16, the bottom of the torsion spring sleeve 16 is completely contained within the stress relief groove 8, and the extension length of the torsion spring 17 matches the design requirements, avoiding assembly failure due to insufficient space or excessive pressing, and ensuring the integrity and functionality of the assembly structure.

[0017] When using this tooling to assemble the leaf torsion spring assembly, the rocker arm 14 is as follows: Figure 3 and Figure 4 The spring is placed on the base 7 so that the bottom of the torsion spring sleeve 16 extends into the stress relief groove 8; the torsion spring 17 is inserted into the positioning cylinder 12, and the screw 13 is gently turned to hold the torsion spring 17 in place; the press is started to push the positioning cylinder 12 and press the torsion spring 17 smoothly into the torsion spring sleeve 16 to complete the assembly.

[0018] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A tooling for assembling a leaf torsion spring assembly, characterized in that, The machine tool includes a vertical machine tool (1), the top of which is a working surface (2), and columns are provided at the four corners of the top of the working surface (2). A top plate (3) is provided at the top of the columns, and a press (4) is provided at the bottom of the top plate (3). A pressure sleeve fixture (5) is also provided on the working surface (2). The position of the pressure sleeve fixture (5) is adapted to the output end of the press (4) so ​​that the press (4) applies pressure to the pressure sleeve fixture (5) to press the torsion spring (17) into the torsion spring sleeve (16) at the end of the swing arm (14). The press sleeve fixture (5) includes a base (7), a stress relief groove (8) is provided in the center of the base (7), the swing arm (14) is placed on the top of the base (7), and the bottom of the torsion spring sleeve (16) extends into the stress relief groove (8); a positioning cylinder (12) is provided on the top of the base (7) for positioning the torsion spring (17). The position of the positioning cylinder (12) is adapted to the press (4) so ​​that the output end of the press (4) applies pressure to the positioning cylinder (12).

2. The assembly fixture for a leaf torsion spring assembly according to claim 1, characterized in that, The base (7) has mounting platforms (10) on both sides, and side support plates (9) are provided on the mounting platforms (10). The side support plates (9) are connected to the mounting platforms (10) by bolts. The positioning cylinder (12) is located between the two side support plates (9).

3. The assembly fixture for a leaf torsion spring assembly according to claim 2, characterized in that, The inner side of the side support plate (9) is provided with clamping plates (11), and the two clamping plates (11) pre-clamp the positioning cylinder (12).

4. The assembly fixture for a leaf torsion spring assembly according to claim 3, characterized in that, The positioning cylinder (12) has a threaded hole on its front side, and a screw (13) is provided in the threaded hole. The end of the screw (13) is screwed into the threaded hole and abuts against the torsion spring (17).

5. The assembly fixture for a leaf torsion spring assembly according to claim 4, characterized in that, The depth of the stress relief groove (8) is the same as the length of one end of the torsion spring (17) extending out of the torsion spring sleeve (16).

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