An automobile part testing fixture

Abstract

The utility model discloses a kind of automobile parts test fixtures, including workbench and fixedly installed support structure in the bottom of the workbench, the top of the workbench is fixedly installed with the placement platform for placing workpiece, clamping mechanism driven by cylinder is provided on the workbench, the cylinder is below the workbench, the clamping mechanism includes connecting rod transmission assembly and sliding block, connecting rod transmission assembly is below the workbench, and is connected with the cylinder output end;Two the sliding block is oppositely arranged in the guiding groove that passes through in the workbench upper and lower, the top of each the sliding block protrudes the guiding groove and is provided with push rod, the lower end of the sliding block protrudes the guiding groove and is hinged with the connecting rod transmission assembly, two the push rod is provided with clamping plate in one end of mutual approach;The support structure is arranged below the workbench, for supporting the workbench.

Description

Technical Field

[0001] This utility model relates to the field of component testing technology, specifically to a testing fixture for automotive components. Background Technology

[0002] In the production of automotive parts, performance testing and quality inspection are frequently required for various components. To ensure the accuracy and reliability of test data, specialized fixtures are needed to securely hold the workpieces under test.

[0003] Currently, most widely used test fixtures employ a bidirectional lead screw drive system. This system uses the rotation of a horizontally arranged lead screw to drive two clamping blocks to move in opposite directions or away from each other along the worktable surface, thereby clamping and releasing the workpiece.

[0004] However, this traditional structure has significant inherent drawbacks. Since the lead screw and its nut assembly are typically directly exposed to the operating area of ​​the worktable, debris, dust, and other impurities generated during testing of metal and composite materials easily fall into the thread clearance of the lead screw. These impurities accelerate wear on the lead screw and nut, leading to increased transmission resistance, sluggish operation, and even jamming. This not only severely affects clamping and positioning accuracy but also significantly shortens the service life of the fixture's core transmission components. Furthermore, the lead screw drive method lacks flexibility in clamping force control and response speed, making it difficult to meet the diverse and high-efficiency testing requirements of modern automotive parts. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a test fixture for automotive parts that has higher reliability, longer service life and strong adaptability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive parts testing fixture, comprising a workbench and a support structure fixedly installed at the bottom of the workbench, a placement platform for placing workpieces fixedly installed on the top of the workbench, and a clamping mechanism driven by a cylinder provided on the workbench, the cylinder being located below the workbench, the clamping mechanism comprising: A linkage drive assembly is located below the worktable and is connected to the output end of the cylinder. Two sliders are disposed opposite each other in a guide groove that runs vertically through the worktable. The top of each slider extends out of the guide groove and is provided with a push rod. The lower end of each slider extends out of the guide groove and is hinged to the linkage transmission assembly. A clamping plate is provided at the end of the two push rods that are close to each other. The support structure is disposed below the worktable to support the worktable.

[0007] Furthermore, the linkage transmission assembly includes a movable block fixedly installed at the output end of the cylinder and two connecting rods, one end of each connecting rod being hinged to the movable block and the other end being hinged to the corresponding slider.

[0008] Furthermore, the clamping mechanism also includes a limiting block, which is fixedly installed on the top of the worktable. The limiting block has a guide hole, through which the push rod can slide.

[0009] Furthermore, an auxiliary support structure is provided below the workbench. The auxiliary support structure includes at least two reinforcing rods, one end of which is fixedly connected to the bottom of the workbench, and the other end is fixedly connected to the support structure.

[0010] Furthermore, stabilizing pads are installed on the reinforcing rods, and the stabilizing pads connect and fix all the reinforcing rods.

[0011] Furthermore, a reinforcing rod is fixedly connected between the clamping plate and the push rod, and the reinforcing rod, the clamping plate, and the push rod together form a triangular reinforcing structure.

[0012] Furthermore, a rubber pad is fixedly installed on the clamping side of the clamping plate.

[0013] Furthermore, multiple pads are fixedly installed at the bottom of the support structure.

[0014] The beneficial effects of this utility model are: The aforementioned automotive component testing fixture has at least the following advantages: This automotive parts testing fixture abandons the easily contaminated double-sided lead screw and adopts a transmission form of "cylinder drive + linkage slider mechanism located under the worktable". All major transmission components, including the hinge points, are built-in and hidden in the space under the worktable, physically isolating them from the testing area above the worktable where debris is easily generated. This effectively prevents debris, dust and other impurities from falling into the moving parts, solving the wear and jamming problems caused by impurities. As a result, the reliability and durability of the transmission system are greatly improved, and the service life of the entire fixture is significantly extended. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is a schematic diagram of the upward-facing structure of this utility model; Figure 3 This is a partial structural schematic diagram of the clamping mechanism of this utility model; Figure 4 This utility model Figure 2 A magnified view of part A in the image.

[0017] Figure label: 1. Workbench; 2. Arc-shaped rod; 3. Pad plate; 4. Clamping assembly; 41. Clamping mechanism; 411. Cylinder; 412. Moving block; 413. Connecting rod; 414. Slider; 415. Push rod; 416. Reinforcing rod; 417. Clamping plate; 418. Rubber pad; 419. Limiting block; 42. Auxiliary mechanism; 421. Reinforcing rod; 422. Stabilizing pad; 5. Placement table. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0019] Please see Figures 1 to 4 This utility model provides a test fixture for automotive parts, including a workbench 1, a placement platform 5, a support structure, and a clamping mechanism 41.

[0020] Specifically, the worktable 1 serves as the mounting base for the entire fixture, and a dedicated placement platform 5 for supporting the workpiece being measured is fixedly mounted on its top. The support structure is fixedly installed at the bottom of the worktable 1, providing stable support for the entire fixture.

[0021] The clamping mechanism 41 is driven by a cylinder 411 located below the worktable 1. The clamping mechanism 41 mainly includes a linkage drive assembly and two sliders 414. The linkage drive assembly is located below the worktable 1 and is directly connected to the output end of the cylinder 411. The two sliders 414 are positioned opposite each other within a vertically penetrating guide groove inside the worktable 1. The top of each slider 414 extends upwards into the guide groove and is fixedly mounted with a horizontally arranged push rod 415; simultaneously, the bottom of each slider 414 extends downwards into the guide groove and is connected to the linkage drive assembly via a hinge. A clamping plate 417 is mounted on each end of the two push rods 415 that are close to each other.

[0022] When cylinder 411 is activated, its output rod pushes the linkage transmission assembly to perform linear motion. The linkage transmission assembly synchronously transmits this linear motion to the two sliders 414, driving them to slide in opposite directions within the guide groove of the worktable 1. Since sliders 414 and push rods 415 are fixedly connected, the movement of sliders 414 is directly converted into synchronous movement of push rods 415 and their top clamping plates 417. When the two clamping plates 417 move towards each other, the workpiece placed on the placement table 5 can be precisely and stably clamped from both sides.

[0023] The aforementioned automotive component testing fixture significantly improves the reliability of the transmission system. Compared to traditional fixtures with exposed lead screws, the main transmission components of the automotive component testing fixture (such as connecting rods and the hinge point of slider 414) are located in the space below the worktable 1. This prevents metal shavings, dust, and other impurities generated during testing from falling into these moving parts, effectively avoiding problems such as transmission jamming and accelerated wear caused by impurities. This significantly extends the fixture's service life and ensures long-term stability of clamping accuracy.

[0024] In this embodiment, the linkage transmission assembly includes a movable block 412 and two connecting rods 413. The movable block 412 is fixedly installed at the output end of the cylinder 411. One end of each of the two connecting rods 413 is hinged to the left and right sides of the movable block 412, and the other end is hinged to the bottom of the corresponding slider 414.

[0025] In use, when the cylinder 411 pushes the moving block 412 forward or backward in a straight line, the lever action of the two connecting rods 413 converts the unidirectional linear motion of the moving block 412 into the synchronous symmetrical linear motion of the two sliders 414. This ensures that the clamping plates 417 on both sides can always move synchronously closer to or further away from the center of the workpiece, achieving centering and clamping of the workpiece and avoiding workpiece displacement or damage that may be caused by asynchronous clamping.

[0026] In a preferred embodiment, the guiding function of the clamping mechanism 41 is optimized. The clamping mechanism 41 also includes a limiting block 419 fixedly installed on the top of the worktable 1. The limiting block 419 has a guide hole, and the push rod 415 is slidably inserted into the guide hole.

[0027] The limiting block 419 and its guide hole provide additional lateral and guiding functions for the push rod 415, effectively preventing the push rod 415 from shaking or deforming, thereby ensuring the stability and accuracy of the clamping process and further improving the reliability of the test results.

[0028] As another preferred embodiment, an auxiliary support structure is provided below the workbench 1. This auxiliary support structure includes at least two reinforcing rods 421. One end of each reinforcing rod 421 is firmly connected to the bottom of the workbench 1, and the other end is fixedly connected to the support structure below.

[0029] The reinforcing rod 421 forms a stable triangular or truss-like support between the worktable 1 and the supporting structure. When the clamping mechanism 41 applies force to the workpiece, the resulting reaction force is transmitted through the worktable 1 to the reinforcing rod 421, and is ultimately effectively dispersed and absorbed by the supporting structure. This significantly improves the structural rigidity and vibration resistance of the entire fixture under dynamic testing conditions, prevents minor deformation or vibration of the worktable 1, and provides a solid hardware foundation for high-precision testing.

[0030] Furthermore, a stabilizing pad 422 is installed on the reinforcing rod 421. The stabilizing pad 422 connects and fixes all the reinforcing rods 421 together. The stabilizing pad 422 connects the originally independent reinforcing rods 421 into a whole frame, thereby enhancing the overall integrity and lateral stability of the auxiliary support structure, enabling it to better resist torsional forces or vibrations from all directions.

[0031] Furthermore, a reinforcing rod 416 is fixedly connected between the clamping plate 417 and the push rod 415. This reinforcing rod 416, together with the clamping plate 417 and the push rod 415, forms a triangular reinforcing structure. This prevents deformation or fatigue damage at the connection between the clamping plate 417 and the push rod 415 under long-term high-load use, thus improving the durability of key components.

[0032] In addition, in specific implementation, a rubber pad 418 can be fixedly installed on the clamping side (i.e. the side facing the workpiece) of each clamping plate 417. As a soft medium, the rubber pad 418 provides sufficient friction while effectively preventing the hard metal clamping plate 417 from directly contacting the workpiece surface, thereby preventing scratches, indentations and other damage to the workpiece surface during clamping.

[0033] Meanwhile, multiple pads 3 are fixedly installed at the bottom of the support structure. The pads 3 form the mounting interface between the fixture and the ground or workbench 1. By adjusting the height of the pads 3 or using shims underneath them, the entire fixture can be leveled to ensure the accuracy of the test benchmark. At the same time, the pads 3 increase the contact area with the ground, improving the stability of the fixture placement.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A testing fixture for automotive parts, comprising a workbench and a support structure fixedly installed at the bottom of the workbench, wherein a placement platform for placing workpieces is fixedly installed at the top of the workbench, characterized in that: The worktable is equipped with a clamping mechanism driven by a cylinder, the cylinder being located below the worktable, and the clamping mechanism includes: A linkage drive assembly is located below the worktable and is connected to the output end of the cylinder. Two sliders are disposed opposite each other in a guide groove that runs vertically through the worktable. The top of each slider extends out of the guide groove and is provided with a push rod. The lower end of each slider extends out of the guide groove and is hinged to the linkage transmission assembly. A clamping plate is provided at the end of the two push rods that are close to each other. The support structure is disposed below the worktable to support the worktable.

2. The automotive parts testing fixture according to claim 1, characterized in that, The linkage transmission assembly includes a movable block fixedly installed at the output end of the cylinder and two connecting rods. One end of each connecting rod is hinged to the movable block, and the other end is hinged to the corresponding slider.

3. The automotive parts testing fixture according to claim 1, characterized in that, The clamping mechanism also includes a limiting block, which is fixedly installed on the top of the worktable. The limiting block has a guide hole, through which the push rod can slide.

4. The automotive parts testing fixture according to claim 1, characterized in that, An auxiliary support structure is provided below the workbench. The auxiliary support structure includes at least two reinforcing rods. One end of each reinforcing rod is fixedly connected to the bottom of the workbench, and the other end is fixedly connected to the support structure.

5. The automotive parts testing fixture according to claim 4, characterized in that, Stabilizing pads are installed on the reinforcing rods, and the stabilizing pads connect and fix all the reinforcing rods.

6. The automotive parts testing fixture according to claim 1, characterized in that, A reinforcing rod is fixedly connected between the clamping plate and the push rod, and the reinforcing rod, the clamping plate, and the push rod together form a triangular reinforcing structure.

7. The automotive parts testing fixture according to claim 1, characterized in that, A rubber pad is fixedly installed on the clamping side of the clamping plate.

8. The automotive parts testing fixture according to claim 1, characterized in that, The bottom of the support structure is fixedly installed with multiple pads.

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