Automobile front suspension rear lower swing arm machine clamping jig
By designing a multi-point high-precision positioning and clamping structure for machining the front suspension and rear lower control arm of an automobile, the problems of shaking and low processing efficiency caused by inaccurate clamping were solved, achieving efficient and stable processing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO TUOPU GROUP CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-14
AI Technical Summary
Existing fixtures cannot quickly and accurately clamp the front suspension and rear lower control arms of automobiles, resulting in shaking and poor repeatability during processing, which affects processing efficiency and accuracy.
A machining fixture for the rear lower control arm of an automobile front suspension was designed. It adopts a multi-point high-precision positioning and multi-point clamping structure, including components such as a first positioning block, a second positioning block, a support seat, a support cylinder, and a clamping cylinder, to ensure stable clamping of the parts during the machining process and prevent shaking and displacement.
It achieves fast and accurate clamping and positioning, improves processing efficiency and stability, reduces processing errors, and ensures processing accuracy.
Smart Images
Figure CN224488425U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping fixture technology, specifically a machining fixture for the rear lower control arm of an automobile front suspension. Background Technology
[0002] The front and rear lower control arms of an automobile are key components of the suspension system, and their machining accuracy directly affects the vehicle's driving stability, handling, and safety. As a suspension part, this component has a complex structure and is prone to deformation after forging. In conventional machining processes, multiple hydraulic cylinders are often used for clamping, which cannot quickly and accurately clamp the front and rear lower control arms. During machining, the arms are prone to wobbling, leading to deformation after machining, poor repeatability, low efficiency, and inconsistent quality. To meet current usage requirements, a new machining fixture for the front and rear lower control arms of an automobile needs to be designed. Utility Model Content
[0003] This utility model provides a machining fixture for the front suspension and rear lower control arm of an automobile, which can solve the problems of existing fixtures being unable to quickly and accurately clamp the front suspension and rear lower control arm of an automobile, insufficient repeatability of positioning and clamping, and easy shaking of the front suspension and rear lower control arm of the automobile during the processing, resulting in low processing efficiency and affecting processing accuracy.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a machining fixture for a front suspension rear lower control arm of an automobile, comprising an oil passage base plate, with two clamping stations on the upper side of the oil passage base plate; each clamping station includes a first positioning block disposed on the left end of the oil passage base plate, a second support cylinder disposed near the first positioning block at the rear of the left end of the oil passage base plate, a support assembly disposed on the right end of the oil passage base plate, a support seat disposed in the middle of the oil passage base plate, a first support cylinder disposed at the rear of the support seat, a second positioning block disposed at the front of the support seat, a second clamping cylinder disposed at the rear of the first support cylinder, and a second pressure plate mounted on the movable end of the second clamping cylinder; two first clamping cylinders are disposed on the side of the first positioning block, and a first pressure plate is mounted on the movable end of the first clamping cylinder; the support assembly includes a fixed seat disposed on the upper side of the oil passage base plate, the fixed seat... A third support cylinder is provided, with shafts on both sides of the third support cylinder. The shafts are threadedly connected to a fixed seat. A connecting block is installed on the movable end of the third support cylinder, and a support plate is sleeved on the connecting block. The two ends of the support plate are provided with slots corresponding to the shafts. The shafts are located in the slots to prevent the support plate from rotating during processing. Support parts are arranged side by side on the side of the support plate. By setting the first positioning block, the second positioning block, and the support seat, the front suspension rear lower control arm of the automobile is quickly positioned, improving clamping efficiency. The first clamping cylinder and the second clamping cylinder work together to ensure that the part is firmly and stably clamped during processing, reducing processing errors caused by inaccurate positioning or insufficient clamping force. The first support cylinder, the second support cylinder, and the third support cylinder provide flexible and reliable support, effectively preventing the shaking and displacement of the part during processing and ensuring the stability of the cutting process.
[0005] As a supplement to the technical solution described in this utility model, a plurality of coarse positioning blocks are provided on the oil circuit base plate between the first positioning block and the support seat. When placing the front suspension lower control arm of the car, the operator can first use the coarse positioning blocks to roughly position the front suspension lower control arm of the car, thereby improving the clamping efficiency.
[0006] As a supplement to the technical solution described in this utility model, the connecting block and the support plate are connected by a fixing pin. After the position and angle of the support plate are adjusted, the connecting block and the support plate are connected by the fixing pin. Both ends of the fixing pin are provided with annular grooves, and a retaining ring is provided in the annular groove.
[0007] As a supplement to the technical solution described in this utility model, the first end of the first positioning block is provided with a notch, and two protrusions are arranged side by side on the upper side of the second end. The notch limits the rear lower control arm of the front suspension of the vehicle, and the two protrusions arranged side by side provide a stable support point for the rear lower control arm of the front suspension of the vehicle.
[0008] As a supplement to the technical solution described in this utility model, the connecting block includes a connecting part connected to the third support cylinder. A rectangular block is fixedly provided on the connecting part and is threadedly connected to the third support cylinder through the connecting part. The connecting block is connected to the third support cylinder through the connecting part, and the rectangular block provides a precise and reliable installation reference.
[0009] As a supplement to the technical solution described in this utility model, the support plate has a slot in the middle that matches the rectangular block, and the support plate is fitted onto the rectangular block through the slot, which makes installation convenient.
[0010] As a supplement to the technical solution described in this utility model, nozzles are provided at both ends of the oil circuit base plate. The nozzles can spray cutting fluid to reduce the temperature of the machining area and can also flush away impurities such as iron filings generated during the machining process.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] By setting up a first positioning block, a second positioning block, and multiple coarse positioning blocks, multi-point, high-precision, and rapid positioning of the front suspension lower control arm of an automobile can be achieved. This reduces the alignment time of the front suspension lower control arm and improves clamping efficiency. The third support cylinder and support plate effectively prevent the shaking and displacement of the parts during machining, ensuring the stability of the cutting process. This solution addresses the problems of existing fixtures being unable to quickly and accurately clamp the front suspension lower control arm of an automobile, insufficient repeatability of positioning and clamping, and the tendency for the front suspension lower control arm to shake during machining, leading to low machining efficiency and affecting machining accuracy. Attached Figure Description
[0013] Figure 1 This is a top view of the present invention in its installed state;
[0014] Figure 2 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 3 This is a three-dimensional structural diagram of the support component of this utility model;
[0016] Figure 4 This is a three-dimensional structural diagram of the first positioning block of this utility model;
[0017] Figure 5 This is a three-dimensional structural diagram of the support plate of this utility model;
[0018] Figure 6 This is a three-dimensional structural diagram of the connecting block of this utility model.
[0019] Figure label:
[0020] 1. Oil circuit base plate, 2. Clamping station, 3. First positioning block, 4. Support seat, 5. Second positioning block, 6. First clamping cylinder, 7. First pressure plate, 8. Second support cylinder, 9. Second clamping cylinder, 10. Second pressure plate, 11. Support assembly, 12. Fixed seat, 13. Third support cylinder, 14. Shaft, 15. Connecting block, 16. Support plate, 17. Slot, 18. Support part, 19. Fixing pin, 20. Slot, 21. Nozzle, 22. First support cylinder, 23. Rectangular block, 24. Connecting part, 31. Notch, 32. Boss, 26. Coarse positioning block. Detailed Implementation
[0021] 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.
[0022] The embodiments of this utility model relate to a machining fixture for the rear lower control arm of an automobile front suspension, such as... Figure 1-6As shown, the fixture includes an oil circuit base plate 1, which serves as the basic load-bearing component. The oil circuit base plate provides stable support for the entire fixture structure. Its internal design incorporates precise oil passages for transmitting hydraulic oil, providing power to various hydraulic drive components such as support cylinders and clamping cylinders, ensuring that each component can perform its actions accurately and stably. Simultaneously, two clamping stations 2 are provided on it, enabling the simultaneous processing of two lower swing arms in a single clamping operation, greatly improving processing efficiency and meeting the needs of mass production. The clamping station 2 includes a first positioning block 3 located at the left end of the oil circuit base plate 1. A second support cylinder 8 is provided at the rear left end of the oil circuit base plate 1, near the first positioning block 3. A support assembly 11 is provided at the right end of the oil circuit base plate 1. A support seat 4 is provided in the middle of the oil circuit base plate 1. A first support cylinder 22 is provided at the rear of the support seat 4. A second positioning block 5 is provided at the front of the support seat 4. A second clamping cylinder 9 is provided at the rear of the first support cylinder 22. The second clamping cylinder 9 is a rotary hydraulic cylinder. A second pressure plate 10 is installed on the movable end of the second clamping cylinder 9. Two first clamping cylinders 6 are provided on the side of the first positioning block 3. The first clamping cylinders 6 are lever hydraulic cylinders. The first clamping cylinder 6 has a first pressure plate 7 installed on its movable end; the support assembly 11 includes a fixed seat 12 disposed on the upper side of the oil circuit base plate 1, a third support cylinder 13 disposed on the fixed seat 12, shafts 14 disposed on both sides of the third support cylinder 13, the shafts 14 being threadedly connected to the fixed seat 12, a connecting block 15 disposed on the movable end of the third support cylinder 13, a support plate 16 sleeved on the connecting block 15, and slots 17 corresponding to the shafts 14 disposed at both ends of the support plate 16, the shafts 14 being located in the slots 17 to prevent the support plate 16 from being damaged during processing. When rotation occurs, the support plate 16 has a support part 18 arranged side by side on its side. The first positioning block 3, the second positioning block 5 and the support seat 4 are set to quickly position the rear lower control arm of the car front suspension, which improves the clamping efficiency. The first clamping cylinder 6 and the second clamping cylinder 9 work together to ensure that the part is firmly and stably clamped during the processing, reducing the processing error caused by inaccurate positioning or insufficient clamping force. The first support cylinder 22, the second support cylinder 8 and the third support cylinder 13 provide flexible and reliable support, effectively preventing the shaking and displacement of the part during the processing, and ensuring the stability of the cutting process.
[0023] In this embodiment, as Figure 2 As shown, multiple coarse positioning blocks 26 are provided on the oil circuit base plate 1 between the first positioning block 3 and the support seat 4. When placing the front suspension lower control arm of the car, the operator can first use the coarse positioning blocks 26 to roughly position the front suspension lower control arm of the car, thereby improving the clamping efficiency.
[0024] In this embodiment, as Figure 3As shown, the connecting block 15 and the support plate 16 are connected by fixing pins 19. After the position and angle of the support plate 16 are adjusted, the connecting block 15 and the support plate 16 are connected by fixing pins 19. Both ends of the fixing pin 19 are provided with annular grooves, and retaining rings are provided in the annular grooves.
[0025] In this embodiment, as Figure 4 As shown, the first end of the first positioning block 3 is provided with a notch 31, and two protrusions 32 are arranged side by side on the upper side of the second end. The notch 31 limits the rear lower control arm of the front suspension of the vehicle, and the two protrusions 32 arranged side by side provide a stable support point for the rear lower control arm of the front suspension of the vehicle.
[0026] In this embodiment, as Figure 6 As shown, the connecting block 15 includes a connecting part 24 connected to the third support cylinder 13. A rectangular block 23 is fixedly provided on the connecting part 24. The connecting part 24 is threadedly connected to the third support cylinder 13. The connecting block 15 is connected to the third support cylinder 13 through the connecting part 24. The rectangular block 23 provides a precise and reliable installation reference.
[0027] In this embodiment, as Figure 5 As shown, the support plate 16 has a slot 20 in the middle that matches the rectangular block 23. The support plate 16 is fitted onto the rectangular block 23 through the slot 20, which makes installation convenient.
[0028] In this embodiment, as Figure 2 As shown, nozzles 21 are provided at both ends of the oil circuit base plate 1. The nozzles 21 can spray cutting fluid to reduce the temperature of the machining area and can also flush away impurities such as iron filings generated during the machining process.
[0029] In this embodiment, as Figure 2As shown, the operator places the front suspension lower control arm of the car on the clamping station 2. First, it is roughly positioned using multiple coarse positioning blocks 26 located between the first positioning block 3 and the support seat 4. The first end of the front suspension lower control arm is placed in the notch 31 of the first positioning block 3. The two bosses 32 and the top of the support seat 4 form three support points. The second positioning block 5 abuts against the side of the front suspension lower control arm. After the front suspension lower control arm is placed, the two first clamping cylinders 6 are activated, driving the first pressure plate 7 to press the front suspension lower control arm onto the two bosses 32. The second clamping cylinder 9 is activated, causing its movable end, the second pressure plate 10, to move downwards, pressing the front suspension lower control arm onto the support seat 4. The second clamping cylinder 9 and the first clamping cylinder 6 work together to form multi-point clamping. The end of the first pressure plate 7 is provided with a first pressure head corresponding to the bosses 32, and the end of the second pressure plate 10 is provided with a second pressure head corresponding to the support seat 4. The first and second pressure heads are made of POM (Polymer Oxide Mold) for protection. To prevent damage to the lower control arm of the front suspension of a car and to prevent workpiece displacement during processing, the movable ends of the second support cylinder 8 and the first support cylinder 22 are threaded with nylon blocks. When the second support cylinder 8 and the first support cylinder 22 are activated, their movable ends extend out to contact the side wall of the lower control arm of the front suspension and apply appropriate support force. The third support cylinder 13 is activated, causing the connecting block 15 to move the support plate 16, so that the support part 18 on the side of the support plate 16 contacts the lower control arm of the front suspension. During processing, the support part 18 stably supports the lower control arm of the front suspension. The machining equipment is started, and the clamped and fixed lower control arm is processed. During processing, the nozzles 21 at both ends of the oil circuit base plate 1 are opened to spray cutting fluid into the processing area, reduce the processing temperature and flush away the iron filings. The second support cylinder 8, the first support cylinder 22 and the third support cylinder 13 continuously provide stable support force. The second clamping cylinder 9 and the first clamping cylinder 6 maintain appropriate clamping force to ensure that the lower control arm of the front suspension does not shift under the action of cutting force.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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 the rear lower control arm of an automobile front suspension, characterized in that, include: Oil circuit base plate (1), with two clamping stations (2) provided on the upper side of the oil circuit base plate (1); The clamping station (2) includes a first positioning block (3) located at the left end of the oil circuit base plate (1), a second support cylinder (8) located at the rear of the left end of the oil circuit base plate (1) near the first positioning block (3), a support assembly (11) located at the right end of the oil circuit base plate (1), a support seat (4) located in the middle of the oil circuit base plate (1), a first support cylinder (22) located at the rear of the support seat (4), a second positioning block (5) located at the front of the support seat (4), a second pressing cylinder (9) located at the rear of the first support cylinder (22), and a second pressure plate (10) installed on the movable end of the second pressing cylinder (9). The side of the first positioning block (3) is provided with two first clamping cylinders (6), and the movable end of the first clamping cylinder (6) is equipped with a first pressure plate (7); The support assembly (11) includes a fixed seat (12) disposed on the upper side of the oil circuit base plate (1), a third support cylinder (13) is disposed on the fixed seat (12), and shafts (14) are disposed on both sides of the third support cylinder (13). The shafts (14) are threadedly connected to the fixed seat (12). A connecting block (15) is installed on the movable end of the third support cylinder (13), and a support plate (16) is sleeved on the connecting block (15). The two ends of the support plate (16) are provided with slots (17) corresponding to the shafts (14), and support parts (18) are arranged side by side on the side of the support plate (16).
2. The machining fixture for the rear lower control arm of an automobile front suspension according to claim 1, characterized in that: Multiple coarse positioning blocks (26) are provided on the oil circuit base plate (1) between the first positioning block (3) and the support seat (4).
3. The machining fixture for the rear lower control arm of an automobile front suspension according to claim 1, characterized in that: The connecting block (15) and the support plate (16) are fitted with fixing pins (19) that connect the two.
4. The machining fixture for the rear lower control arm of an automobile front suspension according to claim 1, characterized in that: The first positioning block (3) has a notch (31) at its first end and two protrusions (32) arranged side by side on the upper side of its second end.
5. The machining fixture for the rear lower control arm of an automobile front suspension according to claim 1, characterized in that: The connecting block (15) includes a connecting part (24) connected to the third support cylinder (13), and a rectangular block (23) is fixedly provided on the connecting part (24).
6. The machining fixture for the rear lower control arm of an automobile front suspension according to claim 5, characterized in that: The support plate (16) has a slot (20) in the middle that matches the rectangular block (23).
7. The machining fixture for the rear lower control arm of an automobile front suspension according to claim 1, characterized in that: The oil circuit base plate (1) is equipped with nozzles (21) at both the left and right ends.