Automobile rear lower control arm machining clamp

Abstract

The utility model discloses a kind of automobile rear lower control arm machine tool clamps, including oil circuit bottom plate, the left end of oil circuit bottom plate is provided with two groups of first support components side by side, the right end of oil circuit bottom plate is provided with positioning assembly, the middle part of oil circuit bottom plate is provided with two first support seats side by side, the upper side of first support seat is provided with first pressing plate correspondingly, first pressing plate is connected with the first pressing cylinder of driving its action, second support component is provided between first support seat and first support component, the front and rear two sides of second support component are oppositely provided with third support component, one side of third support component is provided with second pressing cylinder, the movable end of second pressing cylinder is installed with second pressing plate. The utility model can solve the problem that existing clamp cannot quickly and accurately clamp automobile rear lower control arm machine tool clamp, product is easy to shake in processing process, leading to the problem of low efficiency, poor machining accuracy.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts clamping technology, specifically to a machining clamp for a rear lower control arm of an automobile. Background Technology

[0002] The rear lower control arm is a key load-bearing and moving component in the automotive suspension system. Its complex shape typically includes multiple holes, surfaces, and contours requiring high-precision machining. To ensure the assembly accuracy, motion characteristics, and overall vehicle handling stability of the rear lower control arm, extremely high requirements are placed on the clamping and positioning accuracy and stability of the workpiece during machining. The rear lower control arm has a relatively weak structural rigidity, making it prone to deformation and vibration during machining. Using conventional positioning methods can easily lead to deformation, dimensional deviations, poor repeatability, and low machining efficiency, making it unsuitable for mass production. Therefore, it is necessary to develop a new machining fixture for the automotive rear lower control arm to meet current usage requirements. Utility Model Content

[0003] This utility model provides a machining fixture for the rear lower control arm of an automobile, which can solve the problems of existing fixtures being unable to quickly and accurately clamp the rear lower control arm of an automobile, and the product being prone to shaking during the processing, resulting in low efficiency and poor processing accuracy.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a machining fixture for a rear lower control arm of an automobile, comprising an oil circuit base plate, two sets of first support assemblies arranged side by side on the left end of the oil circuit base plate, a positioning assembly arranged on the right end of the oil circuit base plate, two first support seats arranged side by side in the middle of the oil circuit base plate, a first pressure plate correspondingly arranged on the upper side of the first support seat, a first clamping cylinder connected to the first pressure plate to drive its action, a second support assembly arranged between the first support seat and the first support assembly, a third support assembly arranged opposite to each other on the front and rear sides of the second support assembly, a second clamping cylinder arranged on one side of the third support assembly, and a movable end of the second clamping cylinder being mounted with... The second pressure plate; a fixed seat is provided on the oil circuit base plate near the first support seat, and an elastic pin is vertically arranged inside the fixed seat. The positioning component includes a mounting bracket provided on the oil circuit base plate. A second support seat is vertically arranged at the first end of the mounting bracket, and a third clamping cylinder is provided at the second end of the mounting bracket. A third pressure plate is installed on the movable end of the third clamping cylinder. The third pressure plate extends to the upper part of the second support seat and is hinged to the mounting bracket. The two first support seats and the second support seat form a stable triangular support structure. With the precise positioning of the elastic pin, the positioning accuracy of the workpiece is ensured. The first clamping cylinder, the second clamping cylinder and the third clamping cylinder apply clamping force to stably fix the workpiece.

[0005] As a supplement to the technical solution described in this utility model, a first coarse positioning block is provided between the two first support seats. The upper part of the first coarse positioning block matches the outer wall of the workpiece, providing preliminary positioning for the workpiece and improving clamping efficiency.

[0006] As a supplement to the technical solution described in this utility model, a second support cylinder is provided at the rear of the mounting bracket along the front-rear direction, and a plurality of second coarse positioning blocks are provided on the left side of the mounting bracket. The upper part of the second coarse positioning block matches the outer wall of the workpiece to provide lateral preliminary positioning for the workpiece. Together with the first coarse positioning block, they improve the accuracy of the initial placement of the workpiece and reduce the time for subsequent precise positioning and adjustment.

[0007] As a supplement to the technical solution described in this utility model, the first support assembly includes a connecting seat disposed on the oil circuit base plate, a third support cylinder disposed at the upper end of the connecting seat, and sliding shafts disposed on the upper and lower sides of the third support cylinder, the sliding shafts being threadedly connected to the connecting seat, and a support plate being detachably disposed at the movable end of the third support cylinder, the support plate being slidably connected to the sliding shafts.

[0008] As a supplement to the technical solution described in this utility model, the second support assembly includes a fixed bracket set on the oil circuit base plate. A fourth support cylinder is provided in the middle of the fixed bracket. A snap-fit ​​block is threadedly connected to the top of the fourth support cylinder. A fixing block is snapped in the snap-fit ​​block. A first pressure block is hinged to both sides of the upper end of the fixing block. The first pressure block is hinged to the fixed bracket. The movable end of the fourth support cylinder is lifted and pushes the snap-fit ​​block and the fixing block upward. The first pressure block rotates around the hinge point on the fixed bracket and applies a supporting force to the side of the workpiece, thereby enhancing the stability of the side of the workpiece.

[0009] As a supplement to the technical solution described in this utility model, the third support component includes a mounting bracket set on the oil circuit base plate. The upper end of the mounting bracket is hinged to a second pressure block. A fifth support cylinder is provided on one side of the mounting bracket. During processing, the movable end of the fifth support cylinder is lifted and pushes the second pressure block upward. The second pressure block rotates around the hinge point and applies a supporting force to the side of the workpiece, thereby enhancing the stability of the side of the workpiece.

[0010] As a supplement to the technical solution described in this utility model, a first support cylinder is provided between the mounting bracket and the fixed bracket. The first support cylinder is located at the bottom of the product. During processing, its movable end rises to contact the lower side wall of the product, providing a certain support force.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By using the first and second coarse positioning blocks in conjunction with the elastic pins, the machining station can be quickly and accurately aligned, effectively improving positioning consistency. Multiple support cylinders apply force from different directions, providing uniform and stable support and preventing workpiece deformation. This solves the problem that existing fixtures cannot quickly and accurately clamp automotive rear lower control arm machining fixtures, and that the product is prone to shaking during processing, leading to low efficiency and poor machining accuracy. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3 This is a three-dimensional structural diagram of the installed product of this utility model;

[0016] Figure 4 This is a cross-sectional view of the fixing base and the elastic pin of this utility model.

[0017] Figure 5 This is a cross-sectional view of the first support component of this utility model;

[0018] Figure 6 This is a three-dimensional structural diagram of the first support component of this utility model;

[0019] Figure 7 This is a three-dimensional structural diagram of the positioning component of this utility model;

[0020] Figure 8 This is a three-dimensional structural diagram of the second support component of this utility model;

[0021] Figure 9 This is a three-dimensional structural diagram of the third support component of this utility model.

[0022] Figure label:

[0023] 1. Oil circuit base plate; 2. First support assembly; 3. Positioning assembly; 4. First support seat; 5. First pressure plate; 6. First clamping cylinder; 7. Second support assembly; 8. Third support assembly; 9. Second clamping cylinder; 10. Second pressure plate; 11. Fixed seat; 12. Elastic pin; 13. First coarse positioning block; 14. Second support cylinder; 15. Second coarse positioning block; 16. First support cylinder; 31. Mounting bracket; 32. Second support seat; 33. Third clamping cylinder; 34. Third pressure plate; 21. Connecting seat; 22. Third support cylinder; 23. Sliding shaft; 24. Support plate; 71. Fixed bracket; 72. Fourth support cylinder; 73. Snap-fit ​​block; 74. Fixed block; 75. First pressure block; 81. Mounting bracket; 82. Second pressure block; 83. Fifth support cylinder. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] The embodiments of this utility model relate to a machining fixture for a rear lower control arm of an automobile, such as... Figure 1-9 As shown, the fixture includes an oil circuit base plate 1, which serves as the basic load-bearing component of the entire fixture, providing an installation platform for all components and ensuring the stability of each component's position during processing. It also integrates internal oil circuit channels to provide hydraulic support for the hydraulic drive of each cylinder. Two sets of first support components 2 are arranged side-by-side on the left end of the oil circuit base plate 1, and a positioning component 3 is arranged on the right end. Two first support seats 4 are arranged side-by-side in the middle of the oil circuit base plate 1. A first pressure plate 5 is correspondingly arranged on the upper side of each first support seat 4. A first clamping cylinder 6, which drives the first pressure plate 5, is connected to the first pressure plate 5. A second support component 7 is arranged between the first support seats 4 and the first support components 2. Third support components 8 are arranged opposite each other on the front and rear sides of the second support component 7. A second clamping cylinder 9 is arranged on one side of the third support component 8, and a second pressure plate 10 is installed on the movable end of the second clamping cylinder 9. A fixed seat 11 is arranged on the oil circuit base plate 1 near the first support seats 4. An elastic pin 12 is vertically installed inside the control arm, which engages with a corresponding hole on the control arm to assist in positioning. A spring is installed inside the fixed seat 11 to buffer the movement and prevent the elastic pin 12 from rigidly contacting and damaging the control arm. The positioning assembly 3 includes a mounting bracket 31 installed on the oil circuit base plate 1. A second support seat 32 is vertically installed at the first end of the mounting bracket 31, and a third clamping cylinder 33 is installed at the second end of the mounting bracket 31. A third pressure plate 34 is installed at the movable end of the third clamping cylinder 33. The third pressure plate 34 extends to the upper part of the second support seat 32 and is hinged to the mounting bracket 31. A protrusion is provided on the lower side of the end of the third pressure plate 34, which corresponds to the second support seat 32 to fix the workpiece. The two first support seats 4 and the second support seat 32 form a stable triangular support structure. With the precise positioning of the elastic pin 12, the positioning accuracy of the workpiece is ensured. The first clamping cylinder 6, the second clamping cylinder 9 and the third clamping cylinder 33 apply clamping force to stably fix the workpiece.

[0026] In this embodiment, as Figure 1 As shown, a first coarse positioning block 13 is provided between the two first support seats 4. The upper part of the first coarse positioning block 13 matches the outer wall of the workpiece, providing preliminary positioning for the workpiece and improving clamping efficiency.

[0027] In this embodiment, as Figure 1As shown, a second support cylinder 14 is provided at the rear of the mounting support 31 along the front-rear direction, and a plurality of second coarse positioning blocks 15 are provided on the left side of the mounting support 31. The upper part of the second coarse positioning block 15 matches the outer wall of the workpiece, providing lateral preliminary positioning for the workpiece. Together with the first coarse positioning block 13, they improve the accuracy of the initial placement of the workpiece and reduce the time for subsequent precise positioning and adjustment.

[0028] In this embodiment, as Figure 5-6 As shown, the first support assembly 2 includes a connecting seat 21 disposed on the oil circuit base plate 1. A third support cylinder 22 is disposed at the upper end of the connecting seat 21. Sliding shafts 23 are slidably disposed on the upper and lower sides of the third support cylinder 22. The sliding shafts 23 are threadedly connected to the connecting seat 21. A support plate 24 is detachably disposed at the movable end of the third support cylinder 22. The support plate 24 is slidably connected to the sliding shafts 23.

[0029] In this embodiment, as Figure 8 As shown, the second support assembly 7 includes a fixed bracket 71 mounted on the oil circuit base plate 1. A fourth support cylinder 72 is mounted in the middle of the fixed bracket 71. A snap-fit ​​block 73 is threadedly connected to the top of the fourth support cylinder 72. A fixing block 74 is snapped inside the snap-fit ​​block 73. A first pressure block 75 is hinged to both sides of the upper end of the fixing block 74. The first pressure block 75 is hinged to the fixed bracket 71. The movable end of the fourth support cylinder 72 is lifted, pushing the snap-fit ​​block 73 and the fixing block 74 upward. The first pressure block 75 rotates around the hinge point on the fixed bracket 71 and applies a supporting force to the side of the workpiece, thereby enhancing the stability of the side of the workpiece.

[0030] In this embodiment, as Figure 9 As shown, the third support component 8 includes a mounting bracket 81 mounted on the oil circuit base plate 1. The upper end of the mounting bracket 81 is hinged to a second pressure block 82. A fifth support cylinder 83 is provided on one side of the mounting bracket 81. During processing, the movable end of the fifth support cylinder 83 is lifted and pushes the second pressure block 82 upward. The second pressure block 82 rotates around the hinge point and applies a supporting force to the side of the workpiece, thereby enhancing the stability of the side of the workpiece.

[0031] In this embodiment, as Figure 1 As shown, a first support cylinder 16 is provided between the mounting bracket 81 and the fixed bracket 71. The first support cylinder 16 is located at the bottom of the product. During processing, its movable end rises to contact the lower side wall of the product, providing a certain support force.

[0032] In this embodiment, as Figure 1As shown, the lower rear control arm of the car to be processed is placed on the fixture, so that it initially contacts the first coarse positioning block 13 and the second coarse positioning block 15, completing the initial positioning and placing it on the three positioning points of the two first support seats 4 and the second support seat 32. The elastic pin 12 is inserted into the corresponding hole at the bottom of the workpiece (e.g., Figure 4 As shown, the first clamping cylinder 6 and the third clamping cylinder 33 are activated, the first pressure plate 5 and the third pressure plate 34 press the workpiece, and the support cylinders are activated so that the support components of the first support assembly 2, the second support assembly 7, the third support assembly 8, etc., contact the control arm and provide support. The second clamping cylinder 9 is activated, and the second pressure plate 10 presses the workpiece. The first support cylinder 16 and the second pressure plate 10 support the two arms of the lower rear control arm of the car respectively. After clamping is completed, the control arm can be processed.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A machining fixture for a rear lower control arm of an automobile, characterized in that, include: Oil circuit base plate (1), two sets of first support components (2) are arranged side by side on the left end of the oil circuit base plate (1), a positioning component (3) is arranged on the right end of the oil circuit base plate (1), two first support seats (4) are arranged side by side in the middle of the oil circuit base plate (1), a first pressure plate (5) is arranged on the upper side of the first support seat (4), a first pressing cylinder (6) that drives the first pressing plate (5) is connected to the first pressing plate (5), a second support component (7) is arranged between the first support seat (4) and the first support component (2), a third support component (8) is arranged opposite to the front and rear sides of the second support component (7), a second pressing cylinder (9) is arranged on one side of the third support component (8), and a second pressure plate (10) is installed on the movable end of the second pressing cylinder (9); A fixing seat (11) is provided on the oil circuit base plate (1) near the first support seat (4), and an elastic pin (12) is vertically provided inside the fixing seat (11); The positioning component (3) includes a mounting bracket (31) disposed on the oil circuit base plate (1). A second support seat (32) is vertically disposed at the first end of the mounting bracket (31). A third clamping cylinder (33) is disposed at the second end of the mounting bracket (31). A third pressure plate (34) is installed at the movable end of the third clamping cylinder (33). The third pressure plate (34) extends to the upper part of the second support seat (32) and is hinged to the mounting bracket (31).

2. The machining fixture for the rear lower control arm of an automobile according to claim 1, characterized in that: A first coarse positioning block (13) is provided between the two first support seats (4).

3. The machining fixture for the rear lower control arm of an automobile according to claim 1, characterized in that: The rear part of the mounting bracket (31) is provided with a second support cylinder (14) along the front-rear direction, and the left part of the mounting bracket (31) is provided with a plurality of second coarse positioning blocks (15).

4. The machining fixture for the rear lower control arm of an automobile according to claim 1, characterized in that: The first support assembly (2) includes a connecting seat (21) disposed on the oil circuit base plate (1). A third support cylinder (22) is disposed at the upper end of the connecting seat (21). A sliding shaft (23) is slidably disposed on the upper and lower sides of the third support cylinder (22). The sliding shaft (23) is threadedly connected to the connecting seat (21). A support plate (24) is detachably disposed at the movable end of the third support cylinder (22). The support plate (24) is slidably connected to the sliding shaft (23).

5. The machining fixture for the rear lower control arm of an automobile according to claim 1, characterized in that: The second support assembly (7) includes a fixed bracket (71) set on the oil circuit base plate (1). A fourth support cylinder (72) is set in the middle of the fixed bracket (71). A snap-fit ​​block (73) is threaded to the top of the fourth support cylinder (72). A fixing block (74) is snapped in the snap-fit ​​block (73). A first pressure block (75) is hinged to both sides of the upper end of the fixing block (74). The first pressure block (75) is hinged to the fixed bracket (71).

6. The machining fixture for the rear lower control arm of an automobile according to claim 5, characterized in that: The third support assembly (8) includes a mounting bracket (81) mounted on the oil circuit base plate (1), with a second pressure block (82) hinged to the upper end of the mounting bracket (81), and a fifth support cylinder (83) mounted on one side of the mounting bracket (81).

7. The machining fixture for the rear lower control arm of an automobile according to claim 6, characterized in that: A first support cylinder (16) is provided between the mounting bracket (81) and the fixed bracket (71).

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