Clamp for processing front floor middle section

Abstract

The utility model relates to the field of special equipment for automobile manufacturing especially relates to a clamp for front floor middle section processing, including base, first processing work piece, second processing work piece, third processing work piece and swing lever etc., the base is installed with comprehensive cabinet, controller and gas source control component, the controller is connected with comprehensive cabinet and gas source control component all wired, a plurality of supporting feet are connected on the base, the supporting foot all has mounting plate or fixed plate through bolt connection, the fixed plate top is connected with the support block, the mounting plate side edge is installed with the cylinder, the cylinder is connected with the gas source control component gas circuit, the mounting plate top rotatoryly connects with first mount, swing lever one end rotatoryly connects with the piston rod of cylinder, middle part rotatoryly connects with first mount, and the other end is connected with connecting rod, and the connecting rod bottom surface is connected with the pressure block. Through the bolt quick mounting structure of support block and pressure block, form adjustable clamping module, adapt to the clamping demand of different size work piece, improve the general property of clamp.

Description

Technical Field

[0001] This utility model relates to the field of special equipment for automobile manufacturing, and in particular to a fixture for processing the middle section of the front floor. Background Technology

[0002] The front floor assembly is a crucial component of the vehicle's structure, located beneath the front of the passenger compartment. It forms the core component of the passenger compartment floor and supports key systems such as the powertrain and chassis suspension. Its structural design and manufacturing precision directly affect the vehicle's rigidity, safety, NVH performance, and ride comfort. A robust and precise front floor structure is fundamental to ensuring overall vehicle performance and driving quality.

[0003] As automotive manufacturing technology advances towards lightweighting and higher efficiency, the traditional manufacturing process for the front floor, which involves welding together dozens of stamped parts, is gradually being replaced by more advanced integrated die-casting technology. Using large die-casting machines, multiple beams, ribs, and supports in the middle section of the front floor can be die-cast into a single, complex component in a single process. This technology significantly reduces the number of parts and simplifies subsequent assembly. In later production, typically only a few die-cast integrated components need to be positioned, clamped, and welded together to form the complete front floor assembly.

[0004] However, this advanced integrated die-casting technology also presents unprecedented challenges to subsequent welding fixtures. Traditional fixtures are mainly designed for stamped parts with relatively regular shapes and small rigid deformations, and their positioning points and clamping mechanisms are usually planar or simple curved surface structures. However, the integrated die-cast front floor mid-section part, in order to meet the requirements of lightweighting and functional integration, exhibits extremely complex three-dimensional spatial curved surfaces, deep cavity structures, and built-in reinforcing ribs and irregular bosses. These complex geometric features make it difficult for the positioning pins and jaws of traditional fixtures to find stable and reliable reference surfaces for positioning and clamping, which can easily lead to problems such as inaccurate positioning, interference, or uneven distribution of clamping force, affecting welding accuracy and quality. Utility Model Content

[0005] To overcome the shortcomings of poor positioning accuracy and adaptability, the technical problem of this utility model is to provide a fixture for machining the middle section of the front floor, which aims to solve the above-mentioned shortcomings.

[0006] A fixture for machining the middle section of a front floor includes a base, a first workpiece, a second workpiece, a third workpiece, and a swing rod. The base is equipped with a control cabinet, a controller, and an air source control component. The controller is wiredly connected to both the control cabinet and the air source control component. The third workpiece is slidably connected within the first workpiece. The second workpiece is in side contact with the first workpiece. The base has several support feet, each bolted to a mounting plate or a fixing plate. The top of the fixing plate has a support block for supporting the first, second, and third workpieces. A cylinder is mounted on the side of the mounting plate and is connected to the air source control component via an air circuit. A first mounting seat is rotatably connected to the top of the mounting plate. One end of the swing rod is rotatably connected to the piston rod of the cylinder, the middle part is rotatably connected to the first mounting seat, and the other end is connected to a connecting rod. The bottom surface of the connecting rod is connected to a pressure block that presses against the support block. The lower end of the pressure block contacts the first, second, and third workpieces.

[0007] Optionally, it also includes a connecting cable, a second mounting base is connected to the base, a contact sensor is mounted on the top of the second mounting base, and the connecting cable connects the contact sensor to the integrated cabinet.

[0008] Optionally, buffer pads are connected to both the top and bottom sides of the pressure block, and the buffer pads are pressed together with the connecting rod. The buffer pads are provided at the connection between the fixing plate and the support block.

[0009] Optionally, the top surface of the base is connected to a plurality of hooks.

[0010] Optionally, the base is equipped with a number of casters.

[0011] Optionally, each button on the controller is connected to an identification card on its side.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The bolted quick-installation structure of the support block and the pressure block forms an adjustable clamping module, which can adapt to the clamping requirements of workpieces of different sizes and improve the versatility of the fixture.

[0014] 2. By detecting the contact between the contact sensor and the end face of the third workpiece, and in conjunction with the controller's indicator light function, precise positioning feedback is achieved, thereby improving positioning accuracy.

[0015] 3. The cylindrical positioning rods on the surface of the support block engage with the positioning holes at the bottom of the workpiece to form a precise positioning fit, thereby achieving the initial position locking of the three processed workpieces in the middle section of the front floor.

[0016] 4. The combination design of the casters and hooks enables rapid transfer of fixtures and utilization of vertical space, enhancing the flexibility of the production process and adapting to the needs of multi-station operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the installation structure of the first and second workpieces of this utility model.

[0019] Figure 3 This is a schematic diagram of the specific structure of the support foot and mounting plate of this utility model.

[0020] Figure 4 This is a schematic diagram of the installation structure of the support block and fixing plate of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation structure of the cylinder and the swing rod of this utility model.

[0022] Figure 6 This is a schematic diagram of the installation structure of the pressure block and the first mounting base of this utility model.

[0023] Figure 7 This is a cross-sectional view of the installation structure of the second mounting base and connecting cable of this utility model.

[0024] The meanings of the labels in the attached diagram are as follows: 1: Base, 2: Integrated cabinet, 3: Controller, 4: Air source control component, 5: First workpiece to be processed, 6: Second workpiece to be processed, 7: Third workpiece to be processed, 8: Support foot, 9: Mounting plate, 901: Fixing plate, 10: Support block, 11: Cylinder, 12: Swing rod, 13: Connecting rod, 14: Pressure block, 15: First mounting seat, 16: Second mounting seat, 17: Connecting cable, 18: Contact sensor, 19: Buffer pad, 20: Hook, 21: Moving wheel, 22: Identification card. Detailed Implementation

[0025] 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.

[0026] Example: A fixture for machining the middle section of a front floor, such as... Figures 1-7As shown, the system includes a base 1, a control cabinet 2, a controller 3, an air source control component 4, a first processed workpiece 5, a second processed workpiece 6, a third processed workpiece 7, support feet 8, a mounting plate 9, a fixing plate 901, a support block 10, a cylinder 11, a swing rod 12, a connecting rod 13, a pressure block 14, and a first mounting seat 15. The base 1 houses the control cabinet 2, the controller 3, and the air source control component 4. The controller 3 is wired to both the control cabinet 2 and the air source control component 4. The first processed workpiece 5, the second processed workpiece 6, and the third processed workpiece 7 form the middle section of the front floor. The third processed workpiece 7 is slidably connected within the first processed workpiece 5, and the second processed workpiece 6 contacts the side of the first processed workpiece 5. Several support feet 8 are connected to the base 1, and each support foot 8 is bolted to a mounting plate 9 or a fixing plate 901. The top of the fixing plate 901 is bolted to the support block 10. The cylindrical positioning rods on the surface of the support block 10 engage with the positioning holes at the bottom of the first, second, and third processed workpieces to achieve initial positioning and prevent lateral displacement. A cylinder 11 is mounted on the side of the mounting plate 9, and the cylinder 11 is connected to the air source control component 4 via an air circuit. The top of the mounting plate 9 is rotatably connected to the first mounting seat 15. One end of the swing rod 12 is rotatably connected to the piston rod of the cylinder 11, the middle part is rotatably connected to the first mounting seat 15, and the other end is connected to the connecting rod 13. The bottom surface of the connecting rod 13 is quickly fitted with a pressure block 14 via bolts, adapting to the clamping requirements of different workpiece sizes. Both the fixing plate 901 and the connecting rod 13 are provided with threaded holes to enable quick replacement of the support block 10 and the pressure block 14, ensuring effective clamping and fixation.

[0027] like Figure 3 , Figure 6 and Figure 7 As shown, it also includes a second mounting base 16, a connecting cable 17, and a contact sensor 18. The second mounting base 16 is connected to the base 1, and the contact sensor 18 is installed on its top. The contact sensor 18 is connected to the integrated cabinet 2 through the connecting cable 17 to monitor the contact pressure on the end face of the third processed workpiece 7 in real time to ensure positioning accuracy.

[0028] like Figure 3 , Figure 5 and Figure 6 As shown, it also includes buffer pads 19. Buffer pads 19 are provided on the top and bottom sides of the pressure block 14 and at the connection between the fixing plate 901 and the support block 10, forming a double buffer system. The elastic deformation absorbs the clamping impact and maintains the stability of the workpiece position.

[0029] like Figure 1 As shown, it also includes hooks 20. Several hooks 20 are connected to the top surface of the base 1 for hanging clamps or auxiliary tools, thereby optimizing the utilization of vertical space.

[0030] like Figure 1 As shown, it also includes casters 21. Several casters 21 are installed at the bottom of the base 1 to enable rapid transfer of the fixture and improve the flexibility of the production process.

[0031] like Figure 1 As shown, it also includes an identification card 22. Each button on the controller 3 is connected to an identification card 22 to clearly indicate the button function and reduce the error rate of operation.

[0032] The operator starts the controller 3 and presses the corresponding button according to the prompt on the identification card 22. This drives the air source control component 4 to retract the piston rod of the cylinder 11, causing the swing rod 12 to rotate upwards. The connecting rod 13 then lifts the pressure block 14 to a safe height. At this time, the three processed workpieces in the middle section of the front floor can be placed stably on the support block 10. The cylindrical positioning rod engages with the workpiece positioning hole to achieve initial positioning. The first and second processed workpieces are kept in relative position by the support block 10. The third processed workpiece 7 slides along the inner side of the first processed workpiece 5 to the end and touches the contact sensor 18 on the top of the second mounting base 16. The sensor collects the pressure signal and transmits it to the integrated cabinet 2. After processing, the corresponding indicator light on the controller 3 is triggered, completing the precise positioning.

[0033] The operator controls the piston rod of cylinder 11 to extend via controller 3, pushing the swing rod 12 to rotate downwards around the first mounting base 15. The connecting rod 13 then drives the pressure block 14 to press vertically downwards. When the bottom of the pressure block 14 contacts the workpiece surface, the buffer pads 19 on both sides and at the connection point undergo elastic deformation under pressure, absorbing the impact force and maintaining a stable clamping force. At this time, the pressure block 14 and the support block 10 form a stable clamping force system, ensuring the workpiece position remains stable during welding. During operation, the indicator light on controller 3 corresponding to the completed positioning of the third workpiece 7 must be observed. After confirming that the process requirements are met, the robotic arm is started for point welding. After welding is completed, the piston rod of cylinder 11 retracts, and the pressure block 14 rises to release the clamp.

[0034] Clamping and welding are carried out in separate areas, with the welding area located away from the operating area. After clamping is completed, the operator moves the clamp to the welding station using the casters 21 at the bottom of the base 1; the top hooks 20 suspend auxiliary tools, making full use of vertical space and optimizing the site layout.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fixture for machining the middle section of a front floor, characterized in that: The assembly includes a base (1), a first workpiece (5), a second workpiece (6), a third workpiece (7), and a swing arm (12). The base (1) is equipped with a control cabinet (2), a controller (3), and a gas source control component (4). The controller (3) is wired to both the control cabinet (2) and the gas source control component (4). The third workpiece (7) is slidably connected to the first workpiece (5). The second workpiece (6) is in side contact with the first workpiece (5). The base (1) is connected to several support feet (8). Each support foot (8) is bolted to a mounting plate (9) or a fixing plate (901). The top of the fixing plate (901) is connected to a support for the first workpiece. (5) The support block (10) of the second workpiece (6) and the third workpiece (7), the mounting plate (9) is equipped with a cylinder (11) on the side, the cylinder (11) is connected to the air source control component (4) in the air circuit, the top of the mounting plate (9) is rotatably connected to a first mounting seat (15), one end of the swing rod (12) is rotatably connected to the piston rod of the cylinder (11), the middle part is rotatably connected to the first mounting seat (15), and the other end is connected to a connecting rod (13). The bottom surface of the connecting rod (13) is connected to a pressure block (14) that is pressed and cooperates with the support block (10), and the lower end of the pressure block (14) is in contact with the first workpiece (5), the second workpiece (6) and the third workpiece (7).

2. A jig for processing a front floor intermediate section according to claim 1, characterized in that: It also includes a connecting cable (17), a second mounting base (16) is connected to the base (1), a contact sensor (18) is mounted on the top of the second mounting base (16), and the connecting cable (17) is connected between the contact sensor (18) and the integrated cabinet (2).

3. A fixture for machining the middle section of a front floor according to claim 2, characterized in that: The pressure block (14) is connected to buffer pads (19) on both the top and bottom sides. The buffer pads (19) are pressed together with the connecting rod (13). The buffer pads (19) are provided at the connection between the fixing plate (901) and the support block (10).

4. A jig for processing a front floor intermediate section according to claim 3, characterized in that: The top surface of the base (1) is connected to several hooks (20).

5. A jig for processing a front floor intermediate section according to claim 4, characterized in that: The base (1) has several casters (21) installed at its bottom.

6. A jig for processing a front floor intermediate section according to claim 5, characterized in that: Each button on the controller (3) is connected to an identification card (22).

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