Automobile left rear longitudinal beam assembly testing fixture

Abstract

The utility model belongs to the technical field of testing fixture, concretely relates to a car left rear longitudinal beam assembly testing fixture, including base, the top of base is provided with a plurality of positioning mechanism, the top of base is fixedly connected with a plurality of first mounting seat around positioning mechanism, a plurality of first mounting seat's top is provided with a plurality of flap limiting mechanism around positioning mechanism, the movable end of each flap limiting mechanism is fixedly connected with first profiling contour board, a plurality of sliding limiting mechanisms are arranged between a plurality of flap limiting mechanisms, the top of base is provided with a plurality of clamp assemblies and flap detection mechanism around positioning mechanism. The utility model has the advantages of being provided with positioning mechanism, first profiling contour board and second profiling contour board, can realize the quick positioning to work piece, can effectively improve positioning accuracy simultaneously, thereby improves the detection efficiency and detection accuracy to work piece.

Description

Technical Field

[0001] This utility model relates to the field of inspection tool technology, specifically an inspection tool for the left rear longitudinal beam assembly of an automobile. Background Technology

[0002] The rear longitudinal beam assembly is a core component of the vehicle's rear structure. It consists of two longitudinal main beams and multiple crossbeams joined together by riveting or welding to form a rigid frame, primarily responsible for three functions: vehicle body support, energy absorption, and securing key components. Its design directly impacts the vehicle's safety, durability, and driving stability. Structurally, the rear longitudinal beam assembly is mostly made of low-alloy steel sheet, stamped with a channel, I-beam, or box-shaped cross-section to enhance torsional stiffness and longitudinal load-bearing capacity. The production of the longitudinal beam involves multiple processes such as stamping, bending, and welding. To ensure smooth assembly, high precision and contour accuracy are required for the machining of its holes. Therefore, before assembly, the hole precision and contour accuracy of the rear longitudinal beam assembly need to be inspected using inspection tools.

[0003] However, the shape of the rear longitudinal beam assembly of automobiles is relatively complex, and existing inspection tools are difficult to locate it quickly and accurately. In addition, the inspection mechanism of the inspection tool is usually fixedly connected to the base. When the inspection mechanism is deformed or its accuracy is reduced and needs maintenance, it is inconvenient to disassemble and replace it, which affects the inspection efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of existing automotive left rear longitudinal beam assembly inspection fixtures being inconvenient for quick workpiece positioning and difficult to achieve quick disassembly and assembly of the inspection mechanism.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tooling for inspecting a left rear longitudinal beam assembly of an automobile includes a base. A plurality of positioning mechanisms are disposed on the top of the base. A plurality of first mounting seats are fixedly connected to the top of the base around the positioning mechanisms. A plurality of flip-plate limiting mechanisms are disposed on the top of the first mounting seats around the positioning mechanisms. A first contour plate is fixedly connected to the movable end of each flip-plate limiting mechanism. A plurality of sliding limiting mechanisms are disposed between the flip-plate limiting mechanisms. Each sliding limiting mechanism includes a plurality of horizontally parallel slide rails. A sliding plate is slidably connected to the top of each slide rail. A plurality of limiting seats are fixedly connected to the top of each of the limiting seats. A second contour plate is fixedly connected to the top of each limiting seat. A plurality of clamping assemblies and a flip-plate detection mechanism are disposed on the top of the base around the positioning mechanisms.

[0007] Furthermore, the sliding limiting mechanism also includes a pair of limiting blocks, which are respectively disposed on the outer sides of both ends of the slide rail. A limiting pin is detachably connected vertically to the top of the sliding plate, and the bottom end of the limiting pin passes through the sliding plate and is detachably connected to the limiting block. Several first detection blocks are fixedly connected to the side wall of the limiting seat.

[0008] Furthermore, the positioning mechanism includes a positioning seat, a positioning platform fixedly connected to the top of the positioning seat, a positioning column fixedly connected to the top of the positioning platform, a support platform fixedly connected to the side of the top of the positioning seat away from the positioning platform, a fixing block fixedly connected to the side wall of the positioning seat, and a buffer fixedly connected to the inner side of the fixing block.

[0009] Furthermore, the flip-plate detection mechanism includes a second mounting base, a flip seat is fixedly connected to the top of the second mounting base, a flip plate is rotatably connected to the top of the flip seat, a connecting plate is fixedly connected to the other end of the flip plate, a contour detection block is fixedly connected to the end of the connecting plate, and a second detection block is fixedly connected to the side wall of the flip plate away from the connecting plate.

[0010] Furthermore, both the first and second detection blocks have detection holes on their sidewalls, and detection pins are detachably installed inside the detection holes.

[0011] Furthermore, the bottom of the base is rotatably connected to several rollers.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The present invention relates to a tooling for a left rear longitudinal beam assembly of an automobile, which, by setting a positioning mechanism, a first contour plate and a second contour plate, can achieve rapid positioning of the workpiece and effectively improve the positioning accuracy, thereby improving the inspection efficiency and accuracy of the workpiece.

[0014] 2. The present invention provides a vehicle left rear longitudinal beam assembly inspection fixture, which, by setting a flip-plate limiting mechanism and a sliding limiting mechanism, enables the rapid misalignment and installation of the first contour plate and the second contour plate, facilitating their debugging and maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a vehicle left rear longitudinal beam assembly inspection fixture according to the present invention.

[0016] Figure 2 This is a top view schematic diagram of a vehicle left rear longitudinal beam assembly inspection fixture according to the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly structure of a vehicle left rear longitudinal beam assembly inspection fixture according to the present invention.

[0018] Figure 4 This is a schematic diagram of a positioning mechanism for a left rear longitudinal beam assembly of an automobile according to the present invention.

[0019] Figure 5 This is a schematic diagram of a sliding limit mechanism for a left rear longitudinal beam assembly inspection fixture of an automobile according to the present invention.

[0020] Figure 6 This is a schematic diagram of a flip-type inspection mechanism for a left rear longitudinal beam assembly of an automobile, according to the present invention.

[0021] In the diagram: 1. Base; 2. First mounting seat; 3. Flip-plate limiting mechanism; 4. First contour plate; 5. Sliding limiting mechanism; 501. Slide rail; 502. Sliding plate; 503. Limiting seat; 504. Second contour plate; 505. First detection block; 506. Limiting block; 507. Limiting pin; 6. Clamp assembly; 7. Roller; 8. Positioning mechanism; 801. Positioning seat; 802. Positioning platform; 803. Positioning column; 804. Support platform; 805. Buffer; 9. Flip-plate detection mechanism; 901. Second mounting seat; 902. Flipping seat; 903. Flipping plate; 904. Connecting plate; 905. Contour detection block; 906. Second detection block; 10. Detection hole; 11. Detection pin. 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 1-3 and Figure 5The automotive left rear longitudinal beam assembly inspection fixture of this embodiment includes a base 1. A plurality of positioning mechanisms 8 are provided on the top of the base 1 for positioning the bottom edge of the workpiece. A plurality of first mounting seats 2 are fixedly connected to the top of the base 1 around the positioning mechanisms 8. A plurality of flip-plate limiting mechanisms 3 are provided on the top of the first mounting seats 2 around the positioning mechanisms 8. A first contour plate 4 is fixedly connected to the movable end of each flip-plate limiting mechanism 3 for initially limiting the contour edge of the workpiece. A plurality of sliding limiting mechanisms 5 are provided between the flip-plate limiting mechanisms 3 for further limiting the contour edge of the workpiece. The sliding limiting mechanism 5 includes a plurality of horizontally parallel slide rails 501, and a sliding plate 502 is slidably connected to the top of the slide rails 501. The top of the sliding plate 502 is fixedly connected to several limiting seats 503, and the top of each of the limiting seats 503 is fixedly connected to a second contour plate 504. The top of the base 1 is surrounded by the positioning mechanism 8 and is provided with several clamping assemblies 6 and a flip-plate detection mechanism 9. The clamping assemblies 6 are used to fix the workpiece, and the flip-plate detection mechanism 9 is used to detect the hole position of the workpiece. The sliding limiting mechanism 5 also includes a pair of limiting blocks 506, which are respectively set on the outer sides of both ends of the slide rail 501. The top of the sliding plate 502 is vertically and detachably connected to a limiting pin 507. The bottom end of the limiting pin 507 passes through the sliding plate 502 and is detachably connected to the limiting block 506. The side wall of the limiting seat 503 is fixedly connected to several first detection blocks 505. Before inspection, keep the clamp assembly 6 and the flip-plate inspection mechanism 9 in the open state, then close the flip-plate limiting mechanism 3, causing the first contour plate 4 to move to the inspection station; then slide the sliding plate 502 along the slide rail 501, causing the limiting seat 503 at the top of the sliding plate 502 and the second contour plate 504 to move accordingly, until the second contour plate 504 moves to the inspection station and stops. Insert the limiting pin 507 into the limiting block on the side of the slide rail 501 facing the workpiece to fix the sliding plate 502; at this time, several first contour plates 4 and second contour plates 504 are in a head-to-tail connected state, and then according to the workpiece... The workpiece is placed between the first contour plate 4 and the second contour plate 504. The bottom of the workpiece is positioned by the positioning mechanism 8, ensuring that the edge of the workpiece maintains a certain gap with the first contour plate 4 and the second contour plate 504. At this time, the clamp assembly 6 is closed to fix the workpiece. Then, the flip-plate detection mechanism 9 is closed, and the hole position of the workpiece is detected by the detection pin 11. After the hole position is detected, a go / no-go gauge is inserted into the gap between the edge of the workpiece and the first contour plate 4 and the second contour plate 504. If the go end passes through and the no-go end stops, the contour of the workpiece is qualified; otherwise, it is unqualified.

[0024] Please see Figure 4The positioning mechanism 8 includes a positioning seat 801, a positioning platform 802 fixedly connected to the top of the positioning seat 801, a positioning column 803 vertically fixedly connected to the top of the positioning platform 802, a support platform 804 fixedly connected to the side of the top of the positioning seat 801 away from the positioning platform 802, a fixing block 805 fixedly connected to the side wall of the positioning seat 801, and a buffer 806 vertically fixedly connected to the inner side of the fixing block 805. When positioning the workpiece, the positioning column 803 on the top of the positioning platform 802 is inserted into the positioning hole at the bottom of the workpiece. The support platform 804 supports the bottom of the workpiece, preventing it from shaking during positioning and improving its stability during inspection. The buffer 806 cushions the workpiece when it is placed, preventing the bottom of the workpiece from colliding with the positioning platform 804 and causing damage.

[0025] Please see Figure 6 The flip-plate detection mechanism 9 includes a second mounting base 901. A flip base 902 is fixedly connected to the top of the second mounting base 901. A flip plate 903 is rotatably connected to the top of the flip base 902. A connecting plate 904 is fixedly connected to the other end of the flip plate 903. A contour detection block 905 is fixedly connected to the end of the connecting plate 904. A second detection block 906 is fixedly connected to the side wall of the flip plate 903 away from the connecting plate 904. During hole position detection, the flip plate 903 is rotated towards the workpiece, causing the connecting plate 904 and the contour detection block 905 to rotate accordingly until the contour detection block 905 and the second detection block 906 contact the top of the workpiece, thereby detecting the hole position and top contour of the workpiece.

[0026] Both the first detection block 505 and the second detection block 906 have detection holes 10 on their side walls, and detection pins 11 are detachably installed inside the detection holes 10. During hole position detection, the detection pins 11 are inserted into the corresponding detection holes 10 to detect the hole positions of the workpiece.

[0027] Several rollers 7 are rotatably connected to the bottom of the base 1. The rollers 7 allow for quick movement of the inspection fixture, facilitating the inspection of workpieces in different positions.

[0028] Working principle: Before inspection, the clamp assembly 6 and the flip-plate inspection mechanism 9 are kept in the open state. Then, the flip-plate limiting mechanism 3 is closed, so that the first contour plate 4 moves to the inspection station. Then, the sliding plate 502 is slid along the slide rail 501, so that the limiting seat 503 at the top of the sliding plate 502 and the second contour plate 504 move accordingly until the second contour plate 504 moves to the inspection station and stops. The limiting pin 507 is inserted into the limiting block on the side of the slide rail 501 facing the workpiece to fix the sliding plate 502.

[0029] During inspection, several first contour plates 4 and second contour plates 504 are connected end-to-end. The workpiece is then placed between the first contour plates 4 and second contour plates 504 according to its contour. The bottom of the workpiece is positioned by the positioning mechanism 8. During positioning, the positioning pin 803 on the top of the positioning table 802 is inserted into the positioning hole at the bottom of the workpiece. The support table 804 supports the bottom of the workpiece, preventing it from shaking during positioning and improving its stability during inspection. The buffer 806 cushions the workpiece during placement, preventing collisions between the bottom of the workpiece and the positioning table 804 that could damage it. During positioning, the edges of the workpiece are aligned with the first contour plates 4 and second contour plates 504. The contour plate 504 maintains a certain gap; at this time, the clamp assembly 6 is closed to fix the workpiece, and then the flip-plate detection mechanism 9 is closed. The hole position of the workpiece is detected by the detection pin 11; during the hole position detection, the flip plate 903 is rotated in the direction of the workpiece, so that the connecting plate 904 and the contour detection block 905 rotate accordingly until the contour detection block 905 and the second detection block 906 contact the top of the workpiece. The detection pin 11 is inserted into the detection hole 10 at the corresponding position to detect the hole position and top contour of the workpiece; after the hole position detection is completed, the go gauge is inserted into the gap between the edge of the workpiece and the first contour plate 4 and the second contour plate 504. If the go end passes and the stop end stops, the contour of the workpiece is qualified; otherwise, it is unqualified.

[0030] 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 tooling for inspecting the left rear longitudinal beam assembly of an automobile, characterized in that: The base (1) includes a base, the top of which is provided with a plurality of positioning mechanisms (8). The top of the base (1) is surrounded by positioning mechanisms (8) and a plurality of first mounting seats (2) are fixedly connected to the positioning mechanisms (8). The top of the first mounting seats (2) is surrounded by positioning mechanisms (8) and a plurality of flip-plate limiting mechanisms (3) are provided. The movable end of each flip-plate limiting mechanism (3) is fixedly connected to a first contour plate (4). A plurality of sliding limiting mechanisms (5) are provided between the flip-plate limiting mechanisms (3). The sliding limiting mechanism (5) includes a plurality of horizontally parallel slide rails (501). The top of the slide rails (501) is slidably connected to a sliding plate (502). The top of the sliding plate (502) is fixedly connected to a plurality of limiting seats (503). The top of each of the limiting seats (503) is fixedly connected to a second contour plate (504). The top of the base (1) is surrounded by positioning mechanisms (8) and a plurality of clamping assemblies (6) and a flip-plate detection mechanism (9) are provided.

2. The inspection fixture for the left rear longitudinal beam assembly of an automobile according to claim 1, characterized in that: The sliding limiting mechanism (5) further includes a pair of limiting blocks (506), which are respectively disposed on the outer sides of both ends of the slide rail (501). The top of the sliding plate (502) is vertically and detachably connected to a limiting pin (507). The bottom end of the limiting pin (507) passes through the sliding plate (502) and is detachably connected to the limiting block (506). The side wall of the limiting seat (503) is fixedly connected to several first detection blocks (505).

3. The inspection fixture for the left rear longitudinal beam assembly of an automobile according to claim 1, characterized in that: The positioning mechanism (8) includes a positioning seat (801), a positioning platform (802) is fixedly connected to the top of the positioning seat (801), a positioning column (803) is vertically fixedly connected to the top of the positioning platform (802), a support platform (804) is fixedly connected to the side of the top of the positioning seat (801) away from the positioning platform (802), a fixing block (805) is fixedly connected to the side wall of the positioning seat (801), and a buffer (806) is vertically fixedly connected to the inner side of the fixing block (805).

4. The inspection fixture for the left rear longitudinal beam assembly of an automobile according to claim 2, characterized in that: The flip-plate detection mechanism (9) includes a second mounting base (901), a flip base (902) is fixedly connected to the top of the second mounting base (901), a flip plate (903) is rotatably connected to the top of the flip base (902), a connecting plate (904) is fixedly connected to the other end of the flip plate (903), a contour detection block (905) is fixedly connected to the end of the connecting plate (904), and a second detection block (906) is fixedly connected to the side wall of the flip plate (903) away from the connecting plate (904).

5. A vehicle left rear longitudinal beam assembly inspection fixture according to claim 4, characterized in that: The first detection block (505) and the second detection block (906) are provided with detection holes (10) on their side walls, and detection pins (11) are detachably provided inside the detection holes (10).

6. The inspection fixture for the left rear longitudinal beam assembly of an automobile according to claim 1, characterized in that: The bottom of the base (1) is rotatably connected to several rollers (7).

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