Rotary clamping tool for welding automobile transmission shaft

Abstract

The utility model discloses a rotary clamping frock is used in automobile transmission shaft welding relates to automobile transmission shaft processing technical field, including assembly disc and mounting disc, the fixed connection between assembly disc and mounting disc, the outer surface of assembly disc and mounting disc all fixed connection limit convex ring, the utility model discloses the setting of inner support gyro wheel and outer support gyro wheel is used for supporting the lower end of assembly disc and mounting disc to avoid the assembly disc and mounting disc to appear the inclination in the use process, through the setting of limit convex ring, is used for limiting the position of inner support gyro wheel, ensures that the support position does not shift, guarantees use stability, and through the setting of outer support gyro wheel simultaneously, and limit convex ring contact is used for increasing the support area, further guaranteeing support stability, can avoid the assembly disc and mounting disc to appear the inclination in the use process, reduces the shearing force between rotary connecting sleeve and the junction, guarantees the connection stability and the rotation smooth, improves the use comfort degree.

Description

Technical Field

[0001] This utility model relates to the field of automotive drive shaft processing technology, and in particular to a rotary clamping fixture for welding automotive drive shafts. Background Technology

[0002] A drive shaft is the shaft in a universal joint transmission device that transmits power. It is a high-speed rotating body with few supports.

[0003] In the existing technology, when welding automotive drive shafts, clamping equipment is required to clamp each workpiece before welding the two workpieces together. Currently, three-jaw chucks are used for clamping and welding automotive drive shafts. To facilitate welding, the axis of the three-jaw chuck is placed horizontally. However, the three-jaw chuck is relatively heavy and needs to be rotated. After long-term use, the three-jaw chuck is prone to tilting, making rotation inconvenient and affecting the welding effect. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in the existing technology, when welding automotive drive shafts, clamping equipment is required to clamp each workpiece before welding the two workpieces together. Currently, automotive drive shafts are clamped and welded using a three-jaw chuck. To facilitate welding, the axis of the three-jaw chuck is placed horizontally. However, the three-jaw chuck is relatively heavy and needs to be rotated. After long-term use, the three-jaw chuck is prone to tilting, making rotation inconvenient and affecting the welding effect. Therefore, the proposed invention is a rotary clamping fixture for welding automotive drive shafts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotary clamping fixture for welding automotive drive shafts, comprising an assembly plate and an mounting plate, wherein the assembly plate and the mounting plate are fixedly connected, and a limiting protrusion ring is fixedly connected to the outer surface of both the assembly plate and the mounting plate. A first support frame is provided below the assembly plate and the mounting plate, and inner support rollers are rotatably connected to both sides of the upper end of the first support frame. Outer support rollers are fixedly connected to both sides of the inner support rollers. The outer ring surface of the outer support rollers contacts the outer ring surface of the limiting protrusion rings, and the outer ring surface of the inner support rollers contacts the outer ring surface of the assembly plate and the mounting plate. A second support frame is provided at the lower end of the first support frame, and a mounting base plate is fixedly connected to the lower end of the second support frame.

[0006] Preferably, side through grooves are provided on both sides of the middle part of the lower end of the No. 1 support frame.

[0007] Preferably, threaded sleeves are fixedly connected to the upper end of the first support frame and the lower end of the second support frame, and reinforcing ribs are fixedly connected to the outer surfaces of the two threaded sleeves to the upper end of the first support frame and the lower end of the second support frame, respectively.

[0008] Preferably, both of the threaded sleeves have threaded rods threaded inside, and a hexagonal prism is fixedly connected between the two threaded rods.

[0009] Preferably, one end of each of the two threaded sleeves is fixedly connected to a support end plate between the second support frame and the first support frame, respectively. Both sides of the second support frame are fixedly connected to an inner guide plate, and the inner guide plate is slidably connected to the first support frame.

[0010] Preferably, electric telescopic rods are fixedly connected to both sides of the center of the first support frame, and the output end of the electric telescopic rod passes through the first support frame and is fixedly connected to a limiting block.

[0011] Preferably, a rotating connecting sleeve is fixedly connected to one side of the mounting plate, and a clamping claw is installed inside the mounting plate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the inner and outer support rollers are used to support the lower ends of the assembly plate and the mounting plate to prevent them from tilting during use. The limiting ring restricts the position of the inner support roller to ensure that the support position does not shift and to guarantee stability during use. At the same time, the outer support roller contacts the limiting ring to increase the support area and further ensure support stability. This prevents the assembly plate and the mounting plate from tilting during use, reduces the shear force between the rotating connecting sleeve and the connection point, ensures stable connection and smooth rotation, and improves user comfort.

[0013] 2. In this utility model, the electric telescopic rod and the limiting block are used to prevent the assembly plate and the mounting plate from rotating when clamping or unclamping the drive shaft. This facilitates operation. The hexagonal prism is used to adjust the distance between the first support frame and the second support frame. Together with the inner guide plate, it ensures the connection stability between the first support frame and the second support frame. The support force of the inner support roller on the assembly plate and the mounting plate can be adjusted at any time, making it convenient to use. The side through groove exposes the hexagonal prism, which can be easily rotated during operation. Attached Figure Description

[0014] Figure 1 This utility model presents a three-dimensional structural diagram of a rotary clamping fixture for welding automotive drive shafts. Figure 1 ; Figure 2 This utility model presents a three-dimensional structural diagram of a rotary clamping fixture for welding automotive drive shafts. Figure 2 ; Figure 3This utility model provides a schematic diagram of the connection structure between the first support frame and the second support frame in a rotary clamping fixture for welding automotive drive shafts. Figure 4 This utility model presents a schematic diagram of the internal structure between support frame 1 and support frame 2 in a rotary clamping fixture for welding automotive drive shafts.

[0015] Legend: 1. Assembly plate; 2. Mounting plate; 3. Rotating connecting sleeve; 4. Clamping claw; 5. Support frame 1; 6. Support frame 2; 7. Mounting base plate; 8. Inner support roller; 9. Restricting protrusion ring; 10. Outer support roller; 11. Side through groove; 12. Restricting block; 13. Hexagonal prism; 14. Inner guide plate; 15. Support end plate; 16. Threaded sleeve; 17. Reinforcing rib; 18. Threaded rod; 19. Electric telescopic rod. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a rotary clamping fixture for welding automotive drive shafts, including an assembly plate 1 and a mounting plate 2, which are fixedly connected. A limiting protrusion 9 is fixedly connected to the outer surface of both the assembly plate 1 and the mounting plate 2. A first support frame 5 is provided below the assembly plate 1 and the mounting plate 2. Inner support rollers 8 are rotatably connected to both sides of the upper end of the first support frame 5. Outer support rollers 10 are fixedly connected to both sides of the inner support rollers 8. The outer ring surface of the outer support rollers 10 contacts the outer ring surface of the limiting protrusion 9, and the outer ring surface of the inner support rollers 8 contacts the outer ring surfaces of the assembly plate 1 and the mounting plate 2. A second support frame 6 is provided at the lower end of the first support frame 5, and a mounting base plate 7 is fixedly connected to the lower end of the second support frame 6.

[0019] The specific settings and functions of this embodiment are described below. The inner support roller 8 and the outer support roller 10 are used to support the lower ends of the assembly plate 1 and the mounting plate 2 to prevent them from tilting during use. The limiting protrusion ring 9 is used to limit the position of the inner support roller 8 to ensure that the support position does not shift and to ensure stability during use. At the same time, the outer support roller 10 contacts the limiting protrusion ring 9 to increase the support area and further ensure support stability. This can prevent the assembly plate 1 and the mounting plate 2 from tilting during use, reduce the shear force between the rotating connecting sleeve 3 and the connection point, ensure stable connection and smooth rotation, and improve user comfort.

[0020] Example 2: Figure 1 - Figure 4 As shown, side through grooves 11 are provided on both sides of the lower middle part of the first support frame 5. Threaded sleeves 16 are fixedly connected to the upper end of the first support frame 5 and the lower end of the second support frame 6. Reinforcing ribs 17 are fixedly connected between the outer surfaces of the two threaded sleeves 16 and the upper end of the first support frame 5 and the lower end of the second support frame 6, respectively. Threaded rods 18 are threaded into the interior of each of the two threaded sleeves 16. A hexagonal prism 13 is fixedly connected between the two threaded rods 18. The two threaded sleeves 16... One end is fixedly connected to the second support frame 6 and the first support frame 5 respectively. The inner guide plate 14 is fixedly connected to both sides inside the second support frame 6. The inner guide plate 14 is slidably connected to the first support frame 5. The electric telescopic rod 19 is fixedly connected to both sides of the middle part inside the first support frame 5. The output end of the electric telescopic rod 19 passes through the first support frame 5 and is fixedly connected to the limiting block 12. The rotating connecting sleeve 3 is fixedly connected to one side of the mounting plate 2. The clamping claw 4 is installed inside the assembly plate 1.

[0021] The overall effect of this embodiment is that, through the setting of the electric telescopic rod 19 and the limiting block 12, when clamping or unclamping the drive shaft, the limiting block 12 can squeeze the assembly plate 1 and the mounting plate 2, preventing them from rotating, thus facilitating operation. The setting of the hexagonal prism 13 is used to adjust the distance between the first support frame 5 and the second support frame 6. Together with the inner guide plate 14, it ensures the connection stability between the first support frame 5 and the second support frame 6. The support force of the inner support roller 8 on the assembly plate 1 and the mounting plate 2 can be adjusted at any time, making it convenient to use. The setting of the side through groove 11 exposes the hexagonal prism 13, which facilitates operation as the hexagonal prism 13 is rotated.

[0022] The usage and working principle of this device are as follows: During installation, first install the mounting base plate 7 to the workbench, then assemble the rotating connecting sleeve 3 to the workbench. Place the inner support roller 8 between the two limiting protrusions 9. After the rotating connecting sleeve 3 is installed, rotate the hexagonal prism 13 to move the first support frame 5 upward until the inner support roller 8 supports the outer surfaces of the assembly plate 1 and the mounting plate 2. As needed, continue to rotate the hexagonal prism 13 to adjust the support force on the assembly plate 1 and the mounting plate 2 to complete the installation. When clamping the car drive shaft, extend the output end of the electric telescopic rod 19 so that the limiting block 12 contacts and presses against the assembly plate 1 and the mounting plate 2. Then adjust the position of the clamping claw 4, place one end of the car drive shaft between the clamping claws 4, and then clamp the car drive shaft with the clamping claws 4. Afterward, the output end of the electric telescopic rod 19 retracts, and then the welding operation can be performed.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A rotary clamping fixture for welding automotive drive shafts, comprising an assembly plate (1) and a mounting plate (2), characterized in that: The assembly plate (1) and the mounting plate (2) are fixedly connected. The outer surfaces of the assembly plate (1) and the mounting plate (2) are fixedly connected with limiting protrusions (9). A first support frame (5) is provided below the assembly plate (1) and the mounting plate (2). Inner support rollers (8) are rotatably connected to both sides of the upper end of the first support frame (5). Outer support rollers (10) are fixedly connected to both sides of the inner support rollers (8). The outer ring surface of the outer support rollers (10) contacts the outer ring surface of the limiting protrusions (9). The outer ring surface of the inner support rollers (8) contacts the outer ring surface of the assembly plate (1) and the mounting plate (2). A second support frame (6) is provided at the lower end of the first support frame (5). A mounting base plate (7) is fixedly connected to the lower end of the second support frame (6).

2. The rotary clamping fixture for welding automotive drive shafts according to claim 1, characterized in that: Side through grooves (11) are provided on both sides of the middle part of the lower end of the No. 1 support frame (5).

3. The rotary clamping fixture for welding automotive drive shafts according to claim 1, characterized in that: The upper end of the first support frame (5) and the lower end of the second support frame (6) are both fixedly connected with threaded sleeves (16). The outer surfaces of the two threaded sleeves (16) are respectively fixedly connected with reinforcing ribs (17) between the upper end of the first support frame (5) and the lower end of the second support frame (6).

4. The rotary clamping fixture for welding automotive drive shafts according to claim 3, characterized in that: Both of the threaded sleeves (16) are internally threaded with threaded rods (18), and a hexagonal prism (13) is fixedly connected between the two threaded rods (18).

5. The rotary clamping fixture for welding automotive drive shafts according to claim 4, characterized in that: One end of each of the two threaded sleeves (16) is fixedly connected to a support end plate (15) between the second support frame (6) and the first support frame (5). Both sides of the second support frame (6) are fixedly connected to an inner guide plate (14), and the inner guide plate (14) is slidably connected to the first support frame (5).

6. The rotary clamping fixture for welding automotive drive shafts according to claim 1, characterized in that: Electric telescopic rods (19) are fixedly connected to both sides of the middle part inside the No. 1 support frame (5). The output end of the electric telescopic rod (19) passes through the No. 1 support frame (5) and is fixedly connected to a limiting block (12).

7. The rotary clamping fixture for welding automotive drive shafts according to claim 1, characterized in that: A rotating connecting sleeve (3) is fixedly connected to one side of the mounting plate (2), and a clamping claw (4) is installed inside the assembly plate (1).

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