A limiting device convenient for automobile exoskeleton processing

Abstract

The application discloses a limiting device convenient for automobile outer frame machining, which comprises a bottom plate, a first supporting plate fixed to one end of the upper surface of the bottom plate, a supporting column fixed to the upper end of the side wall of the first supporting plate, a limiting support connected to one end of the supporting column, and connecting blocks arranged at the inner sides of the two ends of the limiting support and fixedly connected with the supporting column, and the outer frame of the automobile is sleeved on the outer surface of the limiting support. The limiting device can realize the limiting and fixing of the outer frame from the inside of the outer frame, so that the random movement of the outer frame during machining is reduced, the position of the limiting block can be adjusted according to the inner contour of the outer frame, the inner wall of the outer frame is well contacted, the stable fixing effect is ensured, and the structure is simple and easy to use.

Description

Technical Field

[0001] This invention specifically relates to a limiting device that facilitates the processing of automotive outer frames. Background Technology

[0002] The automotive outer frame, also known as the body panel or structural frame, is an important component of the automotive body. During the manufacturing processes such as welding, grinding, painting, or inspection of the automotive outer frame, limiting devices are required to reliably fix it at the processing station to ensure the stability and dimensional accuracy of the processing.

[0003] In the industry, the limiting and fixing of automotive outer frames mostly adopts external clamping methods, that is, clamping force is applied from the outside of the workpiece by a fixture. However, the jaws, pressure blocks or locating pins of the fixture often cover the outer surface of the outer frame. When processing the outer surface edges, flanges or exposed surfaces, the fixture components are prone to physical interference, blocking the processing area, resulting in continuous processing or the need for multiple clamping, affecting the consistency of processing. Moreover, if the external clamping force is not properly controlled, it can easily cause indentations on the outer surface of the workpiece, affecting the appearance quality of the product. Therefore, we propose a limiting device that facilitates the processing of automotive outer frames. Summary of the Invention

[0004] The purpose of this invention is to provide a limiting device that facilitates the processing of automotive outer frames, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a limiting device for facilitating the processing of automotive outer frames, comprising:

[0006] A base plate, wherein a first support plate is fixed to one end of the upper surface of the base plate;

[0007] The support column is fixed to the upper end of one side wall of the first support plate;

[0008] A limiting bracket is connected to one end of the support column, and connecting blocks are provided at both ends of the inner side of the limiting bracket, and at least one of the connecting blocks is fixedly engaged with the support column. The outer surface of the limiting bracket is fitted with the outer frame of a car.

[0009] A telescopic cylinder is disposed inside the limiting bracket to be fixed with the connecting block. The telescopic cylinder has two states. In the first state, the telescopic cylinder shortens to drive the limiting bracket to unfold and support and fix the outer frame. In the second state, the telescopic cylinder extends to drive the limiting bracket to retract, thereby removing the outer frame from the limiting bracket.

[0010] Preferably, the limiting bracket includes a ring block and a fixed seat. Support arms are rotatably connected to both ends of the limiting block. The ring block is rotatably mounted on the outer surface of the connecting block, and a fixed seat is fixed on the ring block. The fixed seat is rotatably engaged with the support arms.

[0011] Preferably, the inner side of the limiting block is connected to an adjusting bolt via a threaded portion, and a movable plate is rotatably fitted on the adjusting bolt, with a rubber pad at the top of the movable plate.

[0012] Preferably, at least two adjusting bolts are arranged side by side along one long side of the limiting block.

[0013] Preferably, a limiting bolt is threaded to one end of the inner side of the fixing seat, and one end of the limiting bolt abuts against the connecting block.

[0014] Preferably, the ring block is provided in three places along the axial direction of the connecting block.

[0015] Preferably, a second support plate is provided at the other end of the upper surface of the base plate, the side wall of the second support plate has a connecting slider that slides with the base plate, and a prism that cooperates with the connecting block is fixed on one side wall of the second support plate.

[0016] Preferably, the outer contour of the prism is polygonal, and one end face of the connecting block is provided with a pin groove that mates with the prism.

[0017] Preferably, the second support plate has the same shape as the first support plate, and the two are parallel to each other.

[0018] Preferably, the base plate is rectangular, and the width of the base plate is greater than the width of the first support plate.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention, by incorporating a base plate, a first support plate, a pillar, a telescopic cylinder, and a limiting bracket, avoids the problem of traditional external frame processing, where clamping and fixing the outer frame from the outside can obstruct the outer surface of the frame during machining, affecting processing. This invention allows for limiting and fixing the outer frame from the inside, reducing uncontrolled movement during machining, ensuring the appearance quality of the outer frame, and allowing the position of the limiting block to be adjusted according to the inner contour of the outer frame to achieve good contact with the inner wall of the outer frame, ensuring a stable fixing effect. The structure is simple and easy to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation structure of the limiting bracket of the present invention;

[0023] Figure 3 This is a schematic diagram of the limiting bracket structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the limiting block structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the second support plate structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the effect of the automobile exoskeleton processed according to the present invention.

[0027] In the diagram: 1. Base plate; 2. First support plate; 3. Support column; 4. Outer frame; 5. Telescopic cylinder; 6. Connecting block; 7. Limiting bracket; 71. Ring block; 72. Fixed seat; 73. Support arm; 74. Limiting block; 75. Movable plate; 76. Rubber pad; 77. Adjusting bolt; 78. Limiting bolt; 8. Second support plate; 9. Prism; 10. Connecting slider. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-6 This invention provides a technical solution: a limiting device for facilitating the processing of automotive outer frames, comprising:

[0030] Base plate 1, with a first support plate 2 fixed to one end of the upper surface of base plate 1;

[0031] Support column 3 is fixed to the upper end of one side wall of the first support plate 2;

[0032] The limiting bracket 7 is connected to one end of the support column 3, and the two ends of the inner side of the limiting bracket 7 are provided with connecting blocks 6, and at least one connecting block 6 is fixedly engaged with the support column 3. The outer surface of the limiting bracket 7 is fitted with the outer frame 4 of the car.

[0033] Telescopic cylinder 5 is set inside the limiting bracket 7 to be fixed with the connecting block 6. Telescopic cylinder 5 has two states. In the first state, telescopic cylinder 5 shortens to drive the limiting bracket 7 to unfold and support and fix the outer frame 4. In the second state, telescopic cylinder 5 extends to drive the limiting bracket 7 to retract, thereby removing the outer frame 4 from the limiting bracket 7.

[0034] Compared to traditional external clamping methods, this invention can effectively avoid the clamp from obstructing or interfering with the outer surface of the outer frame 4, ensuring the integrity of the outer processing area of ​​the outer frame 4 and facilitating the completion of processing steps in one go. At the same time, the telescopic cylinder 5 drives the limit bracket 7 to unfold through its first state of shortening, realizing the rapid clamping and fixing of the outer frame 4. In its second state of extending, it drives the limit bracket 7 to retract, facilitating the smooth disassembly of the outer frame 4 after processing. This significantly improves clamping and unloading efficiency, and the structure is compact and easy to operate.

[0035] Preferably, the limiting bracket 7 includes a ring block 71 and a fixed seat 72. The two ends of the limiting block 74 are rotatably connected to the support arm 73. The ring block 71 is rotatably mounted on the outer surface of the connecting block 6, and the fixed seat 72 is fixed on the ring block 71. The fixed seat 72 and the support arm 73 are rotatably engaged.

[0036] When the telescopic cylinder 5 drives the connecting block 6 to move, the power can be smoothly transmitted to the support arm 73 through the ring block 71 and the fixed seat 72, which drives the limiting block 74 to rotate and expand or retract synchronously. This ensures that multiple limiting blocks 74 apply uniform support force to the inner wall of the outer frame 4 at the same time, thereby improving the stability and reliability of the limiting fixation.

[0037] Preferably, the inner side of the limiting block 74 is connected to an adjusting bolt 77 via a threaded part, and a movable plate 75 is rotatably fitted on the adjusting bolt 77, with a rubber pad 76 at the top of the movable plate 75;

[0038] This allows users to adjust the extension height of the movable plate 75 by turning the adjusting bolt 77 according to the inner contour shape of different outer frames 4, thereby fine-tuning the contact point between the limiting block 74 and the inner wall of the outer frame 4. The rubber pad 76 can not only increase the friction coefficient with the inner wall of the outer frame 4 and prevent relative sliding, but also play a buffering and protective role to avoid scratching the inner surface of the workpiece when supporting it.

[0039] Preferably, at least two adjusting bolts 77 are arranged side by side along one long side of the limiting block 74;

[0040] This allows the movable plate 75 to be supported and adjusted at multiple points along its length, enabling independent adjustment based on local unevenness or concavity of the inner wall of the outer frame 4, thereby achieving a better fit to irregular inner contours.

[0041] Preferably, a limiting bolt 78 is threadedly connected to one end of the inner side of the fixing seat 72, and one end of the limiting bolt 78 abuts against the connecting block 6;

[0042] The function of locking the circumferential position of the ring block 71 on the connecting block 6 is realized. When it is necessary to adjust the support angle of the limit bracket 7, the limit bolt 78 can be loosened to allow the ring block 71 to rotate circumferentially along the connecting block 6 to a suitable position, so that the limit block 74 avoids the protruding or concave structure of the inner wall of the outer frame 4, ensuring that the limit block 74 can effectively contact the inner wall of the outer frame 4, increasing the contact area, and ensuring the friction effect after clamping. After the adjustment is in place, the limit bolt 78 is tightened.

[0043] Preferably, the ring block 71 is provided in three places along the axial direction of the connecting block 6;

[0044] This design provides multi-point, multi-section distributed support for the outer frame 4, significantly enhancing its radial and axial limiting capabilities. This layout effectively resists vibrations, cutting forces, and torques generated during machining, preventing the outer frame 4 from shifting or twisting. Furthermore, the connecting block 6 is cylindrical, and the ring blocks 71 are arranged sequentially along the axial direction of the connecting block 6. Adjacent ring blocks 71 are separated by protrusions on the outer wall of the connecting block 6. These protrusions restrict the movement of the ring blocks 71 along the axial direction of the connecting block 6, allowing only circumferential rotation of the ring blocks 71.

[0045] Preferably, a second support plate 8 is provided at the other end of the upper surface of the base plate 1, the side wall of the second support plate 8 has a connecting slider 10 that slides with the base plate 1, and a prism 9 that cooperates with the connecting block 6 is fixed on one side wall of the second support plate 8.

[0046] This facilitates better support for the limiting bracket 7, providing stable upward support during processing, and effectively supporting the heavy outer frame 4.

[0047] Preferably, the outer contour of the prism 9 is polygonal, and a pin groove that mates with the prism 9 is provided on one end face of the connecting block 6.

[0048] It can ensure that there is no relative rotation between the connecting block 6 and the prism 9, thereby ensuring the angular consistency and torque transmission reliability of the limiting bracket 7 during the support and fixing process.

[0049] Preferably, the second support plate 8 has the same shape as the first support plate 2, and the two are parallel to each other;

[0050] Parallel arrangement ensures that the axes of the support column 3 and the prism 9 are collinear or parallel, ensuring that the limit bracket 7 is supported at both ends with balanced force, avoiding the misalignment or additional bending moment of the outer frame 4 due to non-parallel support plates, thereby ensuring the accuracy of processing positioning.

[0051] Preferably, the base plate 1 is rectangular, and the width of the base plate 1 is greater than the width of the first support plate 2;

[0052] Improve placement stability.

[0053] The working principle and usage process of this invention are as follows: In use, the car outer frame 4 to be processed is fitted onto the outer surface of the limiting bracket 7. It is connected to the telescopic cylinder 5 via an air pipe or oil pipe to drive the telescopic cylinder 5 to shorten. At this time, the telescopic cylinder 5 drives the two connecting blocks 6 to move closer to each other. The connecting blocks 6, through the ring block 71, drive the fixed seat 72 to move, thereby causing the support arm 73 to rotate. This causes the limiting block 74 at one end of the support arm 73 to abut against the inner wall of the outer frame 4, thus achieving support and fixation of the outer frame 4. When fixing outer frames 4 with different inner contours, the limiting bolt 78 can be loosened, allowing the ring block 71 to be adjusted circumferentially along the connecting block 6 to offset the protruding or deeply recessed parts of the inner contour of the outer frame 4, so as to correspond to a relatively flat inner wall of the outer frame 4. Then, the limiting bolt 78 is tightened, and the position of the movable plate 75 is adjusted by rotating it. This improves the contact effect between the limiting block 74 and the inner wall of the outer frame 4 during subsequent support and fixation of the outer frame 4, reducing relative sliding or poor contact, and ensuring a stable fixing effect.

[0054] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limiting device for facilitating the processing of automotive outer frames, characterized in that, include: A base plate (1) has a first support plate (2) fixed to one end of its upper surface. The support column (3) is fixed to the upper end of one side wall of the first support plate (2); A limiting bracket (7) is connected to one end of the support column (3), and connecting blocks (6) are provided at both ends of the inner side of the limiting bracket (7), and at least one of the connecting blocks (6) is fixedly engaged with the support column (3). The outer surface of the limiting bracket (7) is fitted with the outer frame (4) of the car. The telescopic cylinder (5) is located inside the limiting bracket (7) to be fixed with the connecting block (6). The telescopic cylinder (5) has two states. In the first state, the telescopic cylinder (5) shortens to drive the limiting bracket (7) to unfold and support and fix the outer frame (4). In the second state, the telescopic cylinder (5) extends to drive the limiting bracket (7) to retract, thereby removing the outer frame (4) from the limiting bracket (7).

2. The limiting device for facilitating the processing of automotive outer frames according to claim 1, characterized in that: The limiting bracket (7) includes a ring block (71) and a fixed seat (72). The limiting block (74) has a support arm (73) rotatably connected to both ends. The ring block (71) is rotatably installed on the outer surface of the connecting block (6), and a fixed seat (72) is fixed on the ring block (71). The fixed seat (72) and the support arm (73) are rotatably engaged.

3. The limiting device for facilitating the processing of automotive outer frames according to claim 2, characterized in that: The inner side of the limiting block (74) is connected to an adjusting bolt (77) via a threaded part. A movable plate (75) is rotatably fitted on the adjusting bolt (77), and a rubber pad (76) is provided at the top of the movable plate (75).

4. The limiting device for facilitating the processing of automotive outer frames according to claim 3, characterized in that: The adjusting bolt (77) is provided in at least two places along one long side of the limiting block (74).

5. A limiting device for facilitating the processing of automotive outer frames according to claim 2, characterized in that: One end of the inner side of the fixed seat (72) is threaded with a limiting bolt (78), and one end of the limiting bolt (78) abuts against the connecting block (6).

6. A limiting device for facilitating the processing of automotive outer frames according to claim 2, characterized in that: The ring block (71) has three locations along the axial direction of the connecting block (6).

7. A limiting device for facilitating the processing of automotive outer frames according to claim 1, characterized in that: A second support plate (8) is provided at the other end of the upper surface of the base plate (1). The side wall of the second support plate (8) has a connecting slider (10) that slides with the base plate (1). A prism (9) that cooperates with the connecting block (6) is fixed on one side wall of the second support plate (8).

8. A limiting device for facilitating the processing of automotive outer frames according to claim 7, characterized in that: The outer contour of the prism (9) is polygonal, and the connecting block (6) has a pin groove on one end face that mates with the prism (9).

9. A limiting device for facilitating the processing of automotive outer frames according to claim 7, characterized in that: The second support plate (8) has the same shape as the first support plate (2), and the two are parallel to each other.

10. A limiting device for facilitating the processing of automotive outer frames according to claim 1, characterized in that: The base plate (1) is rectangular, and the width of the base plate (1) is greater than the width of the first support plate (2).

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