Clamping tool of electronic universal testing machine

Abstract

The utility model belongs to the technical field of universal testing machines, and particularly relates to a clamping tool of an electronic universal testing machine, which comprises a support plate, an adjusting mechanism fixedly connected above the support plate, clamping mechanisms fixedly connected above the support plate and on two sides of the adjusting mechanism, a movable clamp fixedly connected above the adjusting mechanism, and a clamping mechanism fixedly connected above the movable clamp. The clamping mechanism is hinged to the movable clamp. The clamping tool of the electronic universal testing machine has the advantages that the motor drives the first lead screw and the second lead screw to rotate at the same time, the distance between the two clamping jaws is adjusted, and therefore the clamping tool is suitable for testing samples of different sizes and shapes; the clamping jaw is hinged to the connecting base, meanwhile, the linear telescopic device is hinged to the connecting rod, a push rod of the linear telescopic device is pushed out or contracted, a test sample is clamped by the clamping jaw, and the clamping effect is improved; by adjusting the first lead screw, the second lead screw and the linear telescopic device and adjusting the clamping jaws to clamp a test sample, the loosening possibility is reduced, and therefore the accuracy of a test result is improved.

Description

Technical Field

[0001] This utility model belongs to the field of universal testing machine technology, specifically relating to a clamping fixture for an electronic universal testing machine. Background Technology

[0002] The universal testing machine is a material testing machine that integrates functions such as tension, bending, compression, shear, and ring stiffness. It is mainly used for testing tensile properties in industries such as metals, non-metals, composite materials, pharmaceuticals, food, wood, copper, aluminum, plastic profiles, wires and cables, paper, films, rubber, textiles, and aerospace.

[0003] Tensile performance testing mainly involves clamping the sample with a fixture, and using a force application device, force display device, and recorder to determine whether the sample meets the predetermined performance indicators. Different materials require different fixtures during testing. The fixture is a crucial factor in whether the test can proceed smoothly and the accuracy of the test results. However, existing fixtures cannot quickly and stably clamp samples of different sizes and shapes, reducing the accuracy of the test results. Therefore, designing a clamping fixture for an electronic universal testing machine that can improve the clamping effect on samples and is suitable for clamping samples of different sizes and shapes has become an urgent problem to be solved. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a clamping fixture for an electronic universal testing machine.

[0005] This utility model relates to a clamping fixture for an electronic universal testing machine, including a support plate, an adjustment mechanism fixedly connected above the support plate, clamping mechanisms fixedly connected above the support plate on both sides of the adjustment mechanism, and a movable clamp fixedly connected above the adjustment mechanism. The clamping mechanism and the movable clamp are hinged together.

[0006] As a preferred embodiment, the adjustment mechanism includes a U-shaped bracket, with two wall rods of the U-shaped bracket fixedly connected to the top of the support plate. A sliding groove 1 and a sliding groove 2 are provided on the top of the U-shaped bracket. A lead screw 1 is rotatably connected to sliding groove 1, and a lead screw 2 is rotatably connected to sliding groove 2. The adjacent sides of lead screw 1 and lead screw 2 pass through the U-shaped bracket and are fixedly connected. The thread directions of lead screw 1 and lead screw 2 are opposite. A slider is threaded onto both lead screw 1 and lead screw 2. A motor is fixedly connected to the side of the U-shaped bracket, and the output shaft of the motor passes through the U-shaped bracket and is fixedly connected to lead screw 1.

[0007] As a preferred embodiment, the movable fixture includes two connecting bases, which are respectively fixedly connected to the top of the two sliders, and each of the two connecting bases is hinged with a gripper.

[0008] As a preferred embodiment, the clamping mechanism includes two inclined bases, both of which are fixedly connected to the support plate. A linear telescopic device is hinged to one side of each of the inclined bases, and the push rods of the two linear telescopic devices are hinged to connecting rods. The two connecting rods are respectively hinged to two grippers.

[0009] Preferably, both of the linear telescopic devices are pneumatic cylinders, hydraulic cylinders, or electric telescopic rods.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] Compared with existing technologies, the clamping fixture of this utility model's electronic universal testing machine...

[0012] (1) The clamping fixture of the electronic universal testing machine is driven by the motor to rotate both lead screw one and lead screw two at the same time, and the distance between the two jaws is adjusted so that it can be used for test samples of different sizes and shapes.

[0013] (2) The clamping fixture of the electronic universal testing machine has a jaw hinged to the connecting seat, and a linear telescopic device hinged to the connecting rod. The jaws can clamp the test sample by pushing out or retracting the push rod of the linear telescopic device, which improves the clamping effect.

[0014] (3) The clamping fixture of the electronic universal testing machine clamps the test sample by adjusting lead screw one, lead screw two and linear telescopic device, thereby reducing the possibility of loosening and improving the accuracy of the test results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below:

[0016] Figure 1 A schematic diagram of the clamping fixture for the electronic universal testing machine provided in Example 1;

[0017] Figure 2 This is a front view of the clamping fixture of the electronic universal testing machine provided in Example 1;

[0018] Figure 3 A side view of the clamping fixture of the electronic universal testing machine provided in Example 1;

[0019] Figure 4 This is a top view of the clamping fixture of the electronic universal testing machine provided in Example 1.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Support plate, 2. U-shaped bracket, 3. Sliding groove one, 4. Sliding groove two, 5. Lead screw one, 6. Lead screw two, 7. Motor, 8. Connecting base, 9. Gripper, 10. Inclined base, 11. Linear telescopic device, 12. Connecting rod. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] 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.

[0024] Example 1

[0025] The following is combined with Figures 1-4 The present invention will be further described as follows: Figures 1-4 The clamping fixture of the electronic universal testing machine shown includes a support plate 1, an adjustment mechanism fixedly connected above the support plate 1, clamping mechanisms fixedly connected above the support plate 1 on both sides of the adjustment mechanism, and a movable clamp fixedly connected above the adjustment mechanism. The clamping mechanism and the movable clamp are hinged together.

[0026] like Figures 1-4 As shown, the adjustment mechanism includes a U-shaped bracket 2. Both wall rods of the U-shaped bracket 2 are fixedly connected to the support plate 1. A sliding groove 3 and a sliding groove 4 are provided on the upper part of the U-shaped bracket 2. A lead screw 5 is rotatably connected in the sliding groove 3, and a lead screw 6 is rotatably connected in the sliding groove 4. The adjacent sides of the lead screws 5 and 6 pass through the U-shaped bracket 2 and are fixedly connected. The threads of the lead screws 5 and 6 are opposite. A slider is threaded onto both the lead screws 5 and 6. A motor 7 is fixedly connected to the side of the U-shaped bracket 2. The output shaft of the motor 7 passes through the U-shaped bracket 2 and is fixedly connected to the lead screw 5.

[0027] like Figures 1-4 As shown, the movable fixture includes two connecting bases 8, which are fixedly connected to the top of the two sliders respectively, and each of the two connecting bases 8 has a gripper 9 hinged to its top.

[0028] like Figures 1-4 As shown, the clamping mechanism includes two inclined bases 10, both of which are fixedly connected to the support plate 1. A linear telescopic device 11 is hinged to one side of each of the two inclined bases 10. The push rods of the two linear telescopic devices 11 are hinged to connecting rods 12, and the two connecting rods 12 are respectively hinged to two grippers 9.

[0029] like Figures 1-4As shown, both linear telescopic devices 11 are cylinders.

[0030] Working principle:

[0031] Start motor 7 to drive lead screw 5 and lead screw 6 to rotate, thereby connecting base 8 to drive gripper 9 to move and adjust the distance between the two grippers 9; start linear telescopic device 11 to drive the two grippers 9 to clamp the test sample through connecting rod 12.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present 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 or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A clamping fixture for an electronic universal testing machine, comprising a support plate (1), characterized in that, An adjustment mechanism is fixedly connected above the support plate (1), and a clamping mechanism is fixedly connected above the support plate (1) on both sides of the adjustment mechanism. A movable clamp is fixedly connected above the adjustment mechanism, and the clamping mechanism and the movable clamp are hinged together. The adjustment mechanism includes a U-shaped bracket (2), with two wall rods of the U-shaped bracket (2) fixedly connected to the support plate (1) above. A sliding groove 1 (3) and a sliding groove 2 (4) are provided on the top of the U-shaped bracket (2). A lead screw 1 (5) is rotatably connected in the sliding groove 1 (3), and a lead screw 2 (6) is rotatably connected in the sliding groove 2 (4). The sides of the lead screw 1 (5) and the lead screw 2 (6) pass through the U-shaped bracket (2) and are fixedly connected. The threads of the lead screw 1 (5) and the lead screw 2 (6) are opposite. A slider is threaded on both the lead screw 1 (5) and the lead screw 2 (6). A motor (7) is fixedly connected to the side of the U-shaped bracket (2), and the output shaft of the motor (7) passes through the U-shaped bracket (2) and is fixedly connected to the lead screw 1 (5). The movable clamp includes two connecting bases (8), which are respectively fixedly connected to the top of two sliders, and each of the two connecting bases (8) is hinged with a gripper (9). The clamping mechanism includes two inclined bases (10), both of which are fixedly connected to the support plate (1) above. A linear telescopic device (11) is hinged to one side of each of the inclined bases (10), and a connecting rod (12) is hinged to the push rod of each of the two linear telescopic devices (11). The two connecting rods (12) are respectively hinged to two jaws (9).

2. The clamping fixture of the electronic universal testing machine according to claim 1, characterized in that, Both of the linear telescopic devices (11) are cylinders, hydraulic cylinders or electric telescopic rods.

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