A body-in-white bolt tightening fixture

Abstract

The utility model relates to the technical field of automobile assembly, and disclose a body -in -white bolt tightening clamp, including work table, still include: set up in the base inboard bottom's connecting assembly and guide assembly. The utility model discloses through the moving seat of driving connection moves inboard, and the other end follows the change of position along with the one end of connecting rod moving seat movement, drives the transmission block to rotate, and the transmission block passes through another connecting rod of connection and drives another moving seat to move inboard, and the two clamping blocks are tightened inboard through the shell, thereby completing the fixing of body -in -white, through the piston rod of second cylinder extension driving connecting seat moves to one side, and the one end of adjusting rod rotates outward along with the change of connecting seat position, and along with the change of adjusting rod rotation angle, its other end drives the positioning block to insert inboard in the positioning groove, and the mutual engagement between both makes the position of clamping block get fixed, improves the stability of body -in -white assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive assembly technology, specifically a bolt tightening fixture for a white body. Background Technology

[0002] Body-in-white refers to the welded assembly of the car's structural components and body panels, essentially the car's frame. It is the basic structure of a car body, providing its shape and support. In the automotive manufacturing industry's assembly lines, bolt tightening fixtures are used to secure the body-in-white and screw bolts into connection points, such as the doors, hood, and trunk lid, where they connect to the car's frame. The application of this equipment is crucial for improving the quality and efficiency of automobile manufacturing.

[0003] Existing body-in-white bolt tightening fixtures require positioning of the body-in-white during bolt tightening to ensure accurate alignment of the bolts with the threaded holes, thereby improving tightening efficiency. Typically, these fixtures are designed for specific body-in-white specifications. However, when encountering body-in-whites of different specifications during assembly, different fixtures must be used, increasing procurement costs. Furthermore, frequent fixture changes reduce assembly efficiency. Over time, fixture wear may cause loosening during positioning of the body-in-white, preventing accurate alignment of the bolts with the threaded holes. This can lead to bolt tightening deviations or uneven torque distribution, ultimately affecting the stability of the entire body-in-white assembly. Utility Model Content

[0004] The purpose of this utility model is to provide a bolt tightening fixture for a white body to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a body-in-white bolt tightening fixture, including a worktable, a base fixedly connected to the bottom of the worktable, two outer shells inside the worktable, four sets of adjustment components on the outer side of the worktable, a tightening gun for tightening bolts on the outer side of each of the four sets of adjustment components, a sensor on the outer side of the tightening gun, a controller on one side of the worktable, and further comprising:

[0006] A connecting component and a guiding component are provided on the inner bottom of the base. A first cylinder is provided on the outer side of the guiding component. Two sets of rotating components are symmetrically arranged on the outer side of the connecting component. A sliding component is provided on the top of the housing. A clamping block for fixing the body-in-white is provided on the outer side of the sliding component.

[0007] The drive assembly is located on the outside of the housing. Two sets of transmission assemblies are symmetrically arranged on the outside of the drive assembly. Positioning blocks are arranged on the outside of the two sets of transmission assemblies. Two rows of positioning slots are symmetrically arranged on the inside of the worktable.

[0008] Preferably, the connecting assembly includes a fixing seat fixed to the bottom inner side of the base, and a rotating shaft is provided on the top of the fixing seat.

[0009] Preferably, the guide assembly includes two sets of fixed rods disposed on the inner side of the base, two sets of movable seats are slidably connected to the outer sides of the two sets of fixed rods, the top of the two sets of movable seats is respectively provided with a shell, and the outer side of one set of movable seats is fixedly connected to the bottom of the first cylinder.

[0010] Preferably, the rotating assembly includes a transmission block fixed to the outside of the rotating shaft, and two connecting rods are rotatably connected to the outside of the transmission block.

[0011] Preferably, the sliding assembly includes a slider fixed to the top of the housing, the top of the worktable has a groove, and the top of the slider is fixedly connected to the bottom of the clamping block.

[0012] Preferably, the drive assembly includes a second cylinder disposed on the outside of the housing, and the piston rod of the second cylinder is provided with a connecting seat.

[0013] Preferably, the transmission assembly includes an adjusting rod that rotates inside the connecting seat, a rotating seat is provided on the outer side of the adjusting rod, and the other end of the adjusting rod is rotatably connected to one end of the positioning block.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes a first cylinder to retract its piston rod, which is fixed to the outside of the fixed seat. Simultaneously, this retracts the piston rod, causing the connected movable seat to move inward. As one end of the connecting rod moves with the movable seat, the other end, with its changing position, drives the transmission block to rotate. The transmission block, through another connecting rod, then drives another movable seat to move inward. The outer shell then tightens the two clamping blocks inward, thus securing the body-in-white. This eliminates the need to change clamps, improving assembly efficiency. The second cylinder's piston rod extends, causing the connecting seat to move to one side. As the connecting seat changes position, one end of the adjusting rod rotates outward. As the rotation angle of the adjusting rod changes, its other end drives the positioning block to insert into the positioning groove. The two engage with each other, fixing the position of the clamping blocks and improving the stability of the body-in-white assembly. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the body-in-white bolt tightening clamp provided by this utility model;

[0017] Figure 2 A schematic diagram of the cross-sectional structure of the workbench provided by this utility model;

[0018] Figure 3 A schematic diagram of the rotating component structure provided by this utility model;

[0019] Figure 4 A schematic diagram of the transmission component structure provided by this utility model;

[0020] Figure 5 A schematic diagram of the adjustment component provided by this utility model.

[0021] In the diagram: 1. Workbench; 2. Base; 3. Housing; 4. Adjustment assembly; 5. Tightening gun; 6. Sensor; 7. Connecting assembly; 71. Fixed seat; 72. Rotating shaft; 8. Guide assembly; 81. Moving seat; 82. Fixed rod; 9. First cylinder; 10. Rotating assembly; 101. Transmission block; 102. Connecting rod; 11. Drive assembly; 111. Second cylinder; 112. Connecting seat; 12. Transmission assembly; 121. Adjustment rod; 122. Rotating seat; 13. Positioning block; 14. Positioning groove; 15. Sliding assembly; 151. Slider; 152. Slide groove; 16. Clamping block; 17. Controller. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5As shown, a body-in-white bolt tightening fixture includes a workbench 1, with a base 2 fixedly connected to the bottom of the workbench 1. The workbench 1 has two housings 3 inside, and four sets of adjustment components 4 on its outer side. Each adjustment component 4 consists of a motor, a connecting frame, and two sets of pneumatic cylinders. The motor drives the connecting frame to rotate via its output shaft, while the piston rods of the two sets of pneumatic cylinders move, respectively driving a tightening gun 5 to move along the Y-axis and Z-axis via the connecting frame, allowing the tightening gun 5 to perform multi-dimensional position adjustment during bolt assembly. Each of the four adjustment components 4 has a tightening gun 5 for tightening bolts. The tightening gun 5 is used to ensure the firmness and stability of the body structure by tightening bolts during body-in-white assembly. A sensor 6 is installed on the outer side of the tightening gun 5, transmitting the position information of the tightening gun 5 to a controller 17. A controller 17 is located on one side of the workbench 1, receiving data transmitted from the sensors 6. According to the preset program and algorithm, the position, height and tightening torque of the tightening gun 5 are precisely controlled. This is existing technology and will not be elaborated here. It also includes: a connecting component 7 and a guide component 8 set at the bottom inner side of the base 2. A first cylinder 9 is set on the outer side of the guide component 8. Two sets of rotating components 10 are symmetrically set on the outer side of the connecting component 7. A sliding component 15 is set on the top of the outer shell 3. A clamping block 16 for fixing the white body is set on the outer side of the sliding component 15. A driving component 11 is set on the outer side of the outer shell 3. Two sets of transmission components 12 are symmetrically set on the outer side of the driving component 11. A positioning block 13 is set on the outer side of the two sets of transmission components 12. By setting the positioning block 13, the positioning block 13 and the positioning groove 14 are triangular with opposite shapes and can be engaged and connected. Two rows of positioning grooves 14 are symmetrically set on the inner side of the worktable 1. By setting the positioning grooves 14, when the adjusting rod 121 rotates inward, it can drive the positioning block 13 to slide away from the inner side of the positioning groove 14 and complete the separation.

[0024] The connecting assembly 7 includes a fixed base 71 fixed to the bottom inner side of the base 2, and a rotating shaft 72 is provided on the top of the fixed base 71; the guiding assembly 8 includes two sets of fixed rods 82 provided on the inner side of the base 2, which facilitate the sliding of the movable seat 81 along its outer side; two sets of movable seats 81 are slidably connected to the outer sides of the two sets of fixed rods 82, which facilitate the movement of the piston rod of the first cylinder 9 along with the first cylinder 9 when the piston rod moves; the top of each of the two sets of movable seats 81 is provided with a housing 3, and the outer side of one set of movable seats 81 is fixedly connected to the bottom of the first cylinder 9; the rotating assembly 10 includes a transmission block 101 fixed to the outer side of the rotating shaft 72, which facilitates the movement of the movable seat 81 along its outer side when the piston rod of the first cylinder 9 moves; the rotating assembly 10 includes a transmission block 101 fixed to the outer side of the rotating shaft 72, which facilitates the movement of the movable seat 81 along its outer side when the piston rod of the first cylinder 9 moves along with the first cylinder 9 when the piston rod of the first cylinder 9 moves along with the first cylinder 9; the rotating assembly 10 includes a transmission block 101 fixed to the outer side of the rotating shaft 72, which facilitates the movement of the movable seat 8 along with the first cylinder 9 when the piston rod of the first cylinder 9 moves ... The moving block 101, when rotated, drives the moving seat 81, which is not equipped with the first cylinder 9, to move on the other side. Two connecting rods 102 are rotatably connected to the outer side of the transmission block 101. By setting the connecting rods 102, one end moves with the moving seat 81, while the other end drives the transmission block 101 to rotate as the position changes. The sliding component 15 includes a slider 151 fixed to the top of the outer shell 3. A groove 152 is opened on the top of the worktable 1, and the top of the slider 151 is fixedly connected to the bottom of the clamping block 16. By setting the sliding component 15, when the moving seat 81 moves, the slider 151 is driven to slide along the inner side of the groove 152 through the outer shell 3, which improves the stability of the clamping block 16 when it moves.

[0025] The drive assembly 11 includes a second cylinder 111 disposed on the outside of the housing 3. The piston rod of the second cylinder 111 is provided with a connecting seat 112. By setting the drive assembly 11, when the piston rod of the second cylinder 111 moves, it drives the connecting seat 112 to move in parallel. The transmission assembly 12 includes an adjusting rod 121 rotatably inside the connecting seat 112. A rotating seat 122 is disposed on the outside of the adjusting rod 121, and the other end of the adjusting rod 121 is rotatably connected to one end of the positioning block 13. By setting the transmission assembly 12, when the connecting seat 112 moves in parallel, it drives one end of the adjusting rod 121 to rotate. As the rotation angle of the adjusting rod 121 changes, its other end drives the positioning block 13 to move.

[0026] Working principle: When positioning the body-in-white during use, the first cylinder 9 is activated, and its piston rod, fixed to the outside of the fixed seat 71, retracts. At the same time, it drives the connected movable seat 81 to move inward. One end of the connecting rod 102 moves with the movable seat 81, while the other end, as its position changes, drives the transmission block 101 to rotate. Subsequently, the transmission block 101, through the other connecting rod 102, drives another movable seat 81 to move inward. The outer casing 3 causes the two clamping blocks 16 to tighten inward, thus completing the fixation of the body-in-white. Then, the piston rod of the second cylinder 111 extends, driving the connecting seat 112 to move to one side. As the position of the connecting seat 112 changes, it drives one end of the adjusting rod 121 to rotate outward. As the rotation angle of the adjusting rod 121 changes, its other end drives the positioning block 13 to insert into the positioning groove 14. The two engage with each other, fixing the position of the clamping block 16 and improving the stability of the body-in-white assembly.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bolt tightening fixture for a white body, comprising a workbench (1), a base (2) fixedly connected to the bottom of the workbench (1), two outer shells (3) disposed inside the workbench (1), four sets of adjustment components (4) disposed on the outer side of the workbench (1), a tightening gun (5) for tightening bolts disposed on the outer side of each of the four sets of adjustment components (4), a sensor (6) disposed on the outer side of the tightening gun (5), and a controller (17) disposed on one side of the workbench (1), characterized in that, Also includes: A connecting component (7) and a guide component (8) are provided on the inner bottom of the base (2). A first cylinder (9) is provided on the outer side of the guide component (8). Two sets of rotating components (10) are symmetrically provided on the outer side of the connecting component (7). A sliding component (15) is provided on the top of the outer shell (3). A clamping block (16) for fixing the body-in-white is provided on the outer side of the sliding component (15). A drive assembly (11) is provided on the outside of the outer shell (3). Two sets of transmission assemblies (12) are symmetrically arranged on the outside of the drive assembly (11). Positioning blocks (13) are provided on the outside of the two sets of transmission assemblies (12). Two rows of positioning grooves (14) are symmetrically arranged on the inside of the worktable (1).

2. The body-in-white bolt tightening clamp according to claim 1, characterized in that: The connecting assembly (7) includes a fixing seat (71) fixed to the bottom inner side of the base (2), and a rotating shaft (72) is provided on the top of the fixing seat (71).

3. The body-in-white bolt tightening clamp according to claim 1, characterized in that: The guide assembly (8) includes two sets of fixed rods (82) disposed inside the base (2). Two sets of movable seats (81) are slidably connected to the outer sides of the two sets of fixed rods (82). The tops of the two sets of movable seats (81) are respectively provided with a housing (3), and the outer side of one set of movable seats (81) is fixedly connected to the bottom of the first cylinder (9).

4. A bolt tightening fixture for a white body as described in claim 2, characterized in that: The rotating assembly (10) includes a transmission block (101) fixed to the outside of the rotating shaft (72), and two connecting rods (102) are rotatably connected to the outside of the transmission block (101).

5. A bolt tightening fixture for a white body as described in claim 1, characterized in that: The sliding assembly (15) includes a slider (151) fixed to the top of the housing (3), a groove (152) is provided on the top of the worktable (1), and the top of the slider (151) is fixedly connected to the bottom of the clamping block (16).

6. A bolt tightening fixture for a body-in-white as described in claim 1, characterized in that: The drive assembly (11) includes a second cylinder (111) disposed on the outside of the housing (3), and the piston rod of the second cylinder (111) is provided with a connecting seat (112).

7. A bolt tightening fixture for a body-in-white as described in claim 6, characterized in that: The transmission assembly (12) includes an adjusting rod (121) that rotates inside the connecting seat (112). A rotating seat (122) is provided on the outside of the adjusting rod (121), and the other end of the adjusting rod (121) is rotatably connected to one end of the positioning block (13).

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