Aluminum profile stamping control arm

Abstract

The utility model discloses an aluminum profile stamping control arm which comprises a control arm body formed through stamping, the control arm body is of a hollow structure, a first installation notch is formed in the first end of the control arm body, first bosses are arranged on the two sides of the first installation notch, and auxiliary frame installation holes are formed in the first bosses. A second mounting notch is formed in the second end of the control arm body, second bosses are arranged on the two sides of the second mounting notch, and steering knuckle mounting holes are formed in the second bosses; a damping spring mounting hole is formed in the upper side wall of the control arm body, and a circular through hole and a kidney-shaped through hole are formed in the lower side wall of the control arm body. The control arm can solve the problems of fuel efficiency and vehicle power performance caused by the fact that an existing control arm is mostly made of cast iron or steel.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive parts, and particularly relates to an aluminum profile stamping control arm. Background Art

[0002] In industrial fields such as automobiles and machinery, control arms are mostly used in the multi-link rear suspension. A control arm is an important component connecting the wheel and the vehicle frame. Its main function is to transmit the force and motion between the wheel and the vehicle frame, ensuring the correct motion trajectory of the wheel. One end is connected to the subframe, and the other end is connected to the steering knuckle. At the same time, a shock absorber spring is installed on the upper part. The weight load of the vehicle body is transmitted to the ground through this part, and the excitation from the ground is also transmitted to the shock absorber spring through this part. It is the main load-bearing part that bears the Z-direction load of the whole vehicle. Traditional control arms are usually made of cast iron or steel materials. Although these materials have high strength and stiffness, they are relatively heavy, which is not conducive to the lightweight of the vehicle, thus affecting fuel economy and power performance.

[0003] With the development of the automotive industry, lightweight has become one of the important ways to improve vehicle performance. Lightweight can reduce the fuel consumption of the vehicle, improve the acceleration performance, and reduce emissions pollution. Therefore, using lightweight materials to manufacture control arms has become a trend in the industry. Aluminum profiles are widely used in the manufacture of automotive parts due to their light weight, high strength, good corrosion resistance, and recyclability. Summary of the Utility Model

[0004] The utility model provides an aluminum profile stamping control arm, which can solve the problems that existing control arms are mostly made of cast iron or steel, resulting in low fuel efficiency and poor vehicle power performance.

[0005] To achieve the above object, the utility model provides the following technical solution: an aluminum profile stamping control arm, including a control arm body formed by stamping. The control arm body is a hollow structure. A first installation notch is provided at the first end of the control arm body. First bosses are provided on both sides of the first installation notch, and subframe installation holes are provided on the first bosses. A second installation notch is provided at the second end of the control arm body. Second bosses are provided on both sides of the second installation notch, and steering knuckle installation holes are provided on the second bosses. A shock absorber spring installation hole is provided on the upper side wall of the control arm body. A circular through-hole and a kidney-shaped through-hole are provided on the lower side wall of the control arm body. The circular through-hole and the kidney-shaped through-hole are used for machining positioning, ensuring machining accuracy, ensuring the lightweight of the control arm, and still maintaining high strength and stiffness of the control arm, meeting the durability and safety requirements of the vehicle under complex road conditions.

[0006] Preferably, a first weight-reducing groove is provided on one side of the first end of the control arm body located in the first mounting notch, and a second weight-reducing groove is provided on one side of the second end of the control arm body located in the second mounting notch, which can effectively reduce the weight and reduce the opening stiffness of the subframe connection end and the steering knuckle connection end, ensuring the reliability of the fit.

[0007] Preferably, convex edges extending outward are provided on both sides of the upper part of the control arm body.

[0008] Preferably, a straight edge is provided on one side of the second boss, and the structure is simple.

[0009] Preferably, a mounting rod is inserted through the steering knuckle mounting hole, and an eccentric fixing block is provided at one end of the mounting rod on one side of the straight edge. The straight edge is used to cooperate with the eccentric fixing block to realize the adjustment of the four-wheel alignment of the vehicle.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] The structure is simple and the operation is convenient. By adopting the design of the hollow structure and the weight-reducing groove on the control arm, the weight of the control arm is significantly reduced, which helps to improve the fuel efficiency and power performance of the vehicle, ensuring that even under the premise of lightweight, the control arm still maintains high strength and stiffness, meeting the durability and safety requirements of the vehicle under complex road conditions; the stamping forming process simplifies the production process, reduces the processing steps, improves the production efficiency, and reduces the production cost; the aluminum profile stamping control arm realizes lightweight while ensuring the strength and stiffness of the structure, improves the production efficiency and the comprehensive performance of the product, and has significant technical advantages and market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0013] Figure 2 is a three-dimensional structure diagram of the present utility model from different angles;

[0014] Figure 3 is a top view of the present utility model;

[0015] Figure 4 is a B-B cross-sectional view of the present utility model;

[0016] Figure 5 is a partial enlarged view of part A of the present utility model;

[0017] Figure 6 is a process flow diagram of the present utility model.

[0018] Reference numerals:

[0019] 1. Straight edge, 2. Second boss, 3. Knuckle mounting hole, 4. Shock absorber spring mounting hole, 5. First boss, 6. Subframe mounting hole, 7. Circular through hole, 8. Kidney-shaped through hole, 9. Mounting rod, 10. Eccentric fixing block, 11. Convex edge, 20. Control arm body, 21. First mounting notch, 22. Second mounting notch, 23. First weight reduction groove, 24. Second weight reduction groove. Detailed implementation manner

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] As Figure 1-6 shown, to solve the problem that existing control arms are mostly made of cast iron or steel, resulting in problems with fuel efficiency and vehicle power performance, the present invention provides the following technical solutions: an aluminum profile stamping control arm, including a control arm body 20 formed by stamping. The control arm body 20 is a hollow structure. A first mounting notch 21 is provided at the first end of the control arm body 20. First bosses 5 are provided on both sides of the first mounting notch 21. A subframe mounting hole 6 is provided on the first bosses 5. A second mounting notch 22 is provided at the second end of the control arm body 20. Second bosses 2 are provided on both sides of the second mounting notch 22. A knuckle mounting hole 3 is provided on the second bosses 2. A shock absorber spring mounting hole 4 is provided on the upper side wall of the control arm body 20. A circular through hole 7 and a kidney-shaped through hole 8 are provided on the lower side wall of the control arm body 20. The circular through hole 7 and the kidney-shaped through hole 8 are used for machining positioning, ensuring machining accuracy, ensuring the lightweight of the control arm, and still maintaining high strength and stiffness of the control arm, meeting the durability and safety requirements of the vehicle under complex road conditions.

[0022] In this embodiment, as Figure 2 shown, a first weight reduction groove 23 is provided on one side of the first end of the control arm body 20 located at the first mounting notch 21. A second weight reduction groove 24 is provided on one side of the second end of the control arm body 20 located at the second mounting notch 22, which can effectively reduce weight and reduce the opening stiffness of the subframe connection end and the knuckle connection end, ensuring the reliability of the fit.

[0023] In this embodiment, as Figure 2 shown, convex edges 11 extending outward are provided on both sides of the upper part of the control arm body 20.

[0024] In this embodiment, as Figure 1 shown, a straight edge 1 is provided on one side of the second boss 2, with a simple structure.

[0025] In this embodiment, as Figure 5As shown, an installation rod 9 is passed through the knuckle mounting hole 3. One end of the installation rod 9 is provided with an eccentric fixing block 10 on one side of the straight edge 1, and the straight edge 1 is used to cooperate with the eccentric fixing block 10 to realize the adjustment of the four-wheel alignment of the vehicle.

[0026] In this embodiment, as Figure 1-6 shown, the process route of the control arm is aluminum ingot melting - casting aluminum rod - extruding profile - straightening profile - T4 heat treatment - precision cutting and blanking - punching positioning holes - bending - trimming - flaring - T6 heat treatment - punching bosses - punching holes - machining; among which, the T4 treatment is mainly used to eliminate the internal stress generated during the profile production process, reduce the strength of the material to facilitate subsequent production; punching the positioning holes in the front of the process is to ensure that the subsequent features can use this positioning to ensure the position accuracy of each key assembly position; the reason for flaring is that the opening size of the knuckle mounting end is larger than that of the subframe mounting end, so the side of the knuckle mounting end is enlarged to meet the installation requirements; the subsequent T6 heat treatment is mainly used to improve the strength of the material; machining is mainly to precisely machine the materials at the interfering parts, and this process can also be cancelled if the punching can meet the avoidance accuracy; the control arm is stamped with a U-shaped aluminum profile. One side of the U-shaped aluminum profile has a long side, and the wall thickness of each side of the profile can be designed with different wall thicknesses according to the actual force situation to achieve the final effect; a first boss 5 is punched at the connection end of the control arm and the subframe to ensure the flatness of the installation plane, and a subframe mounting hole 6 is provided on the first boss for the bolt to pass through; the connection part of the control arm and the knuckle end is symmetrically designed with long waist-shaped second bosses 2. The second bosses have a certain depth, and waist-shaped knuckle mounting holes 3 are provided. A straight edge 1 perpendicular to the direction of the boss is provided on the concave surface of the second boss 2, and the straight edge 1 is used to cooperate with the eccentric fixing block 10 to realize the adjustment of the four-wheel alignment of the vehicle; the middle cross-sectional shape of the control arm body 20 is concave at the bottom and convex on the side, as Figure 4 shown, it can avoid serious deformation and tearing of the whole cavity caused by the bending of the profile or insufficient stiffness in the spring installation direction due to serious deformation.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indicators will also change accordingly.

[0028] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically and clearly defined.

[0029] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. An aluminum profile stamping control arm, characterized in that: include: A control arm body (20) formed by stamping, wherein the control arm body (20) is a hollow structure, a first mounting notch (21) is provided at a first end of the control arm body (20), first bosses (5) are provided on both sides of the first mounting notch (21), a subframe mounting hole (6) is provided on the first boss (5), a second mounting notch (22) is provided at a second end of the control arm body (20), second bosses (2) are provided on both sides of the second mounting notch (22), and a steering knuckle mounting hole (3) is provided on the second boss (2); The upper side wall of the control arm body (20) is provided with a shock-absorbing spring mounting hole (4), and the lower side wall of the control arm body (20) is provided with a circular through hole (7) and a waist-shaped through hole (8).

2. The aluminum profile stamping control arm according to claim 1, characterized in that: A first weight-reducing groove (23) is provided at a first end of the control arm body (20) located on one side of the first installation notch (21), and a second weight-reducing groove (24) is provided at a second end of the control arm body (20) located on one side of the second installation notch (22).

3. The aluminum profile stamping control arm according to claim 1, characterized in that: Outwardly extending convex edges (11) are arranged on both sides of the upper part of the control arm body (20).

4. The aluminum profile stamping control arm according to claim 1, characterized in that: A straight edge (1) is provided on one side of the second boss (2).

5. The aluminum profile stamping control arm according to claim 4, characterized in that: A mounting rod (9) is inserted through the steering knuckle mounting hole (3), and an eccentric fixing block (10) is provided at one end of the mounting rod (9) and located on one side of the straight edge (1).

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