Carbon fiber compression performance test tool

Abstract

The invention relates to the technical field of composite material performance testing, in particular to a carbon fiber compression performance testing tool which comprises a base arranged on a compression platform and provided with a containing space; the two linear guide rails are vertically arranged in the containing space and located at the two ends of the containing space in the horizontal direction respectively. One of the two clamping assemblies is arranged at the bottom end of the containing space, the other clamping assembly is located at the top end of the containing space, matched with the two linear guide rails respectively and vertically moves along the two linear guide rails, and a pressing disc is arranged at the top of the clamping assembly at the top end and connected with the compression end of the compression platform. According to the carbon fiber material compression performance testing device disclosed by the invention, the sample piece is not subjected to buckling damage in the testing process, the stability of the sample piece in the compression testing process is ensured through the matching of the linear guide rail and the clamping assembly, and the testing error caused by sample piece deviation or buckling is reduced, so that the accuracy of the compression performance testing of the carbon fiber material is improved.

Description

Technical Field

[0001] The invention relates to the technical field of composite material performance testing, and in particular to a carbon fiber compression performance testing tool. Background Art

[0002] With the development of science and technology, high-strength composite materials are widely used in various fields due to their superior properties such as light weight, large bearing capacity, fatigue resistance, corrosion resistance, etc. Common composite materials such as carbon fiber resin reinforced materials, due to the wide range of uses of composite materials, performance testing of composite materials is also receiving more and more attention.

[0003] The compression performance test of carbon fiber usually uses a fixture to clamp the two ends of the sample, and then one end is fixed and the other end is compressed vertically downward under the guidance of a guide pin. However, during the compression process, due to the gap between the guide pins, the sample cannot be kept vertical, and it is easy to deviate, causing the sample to buckle and fail, and the measured compression performance is not accurate enough.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] The invention provides a carbon fiber compression performance testing tool, thereby effectively solving the problems in the background technology.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a carbon fiber compression performance testing tool, comprising: A base, the base is placed on the compression platform, and the base includes a containing space; Two linear guide rails, the two linear guide rails are vertically arranged in the accommodating space and are respectively located at two ends of the accommodating space in a horizontal direction; Two clamping components, one of which is arranged at the bottom of the accommodating space, and the other clamping component is located at the top of the accommodating space, and respectively cooperates with the two linear guide rails to move vertically along the two linear guide rails. A pressure plate is arranged on the top of the clamping component at the top, and the pressure plate is connected to the compression end of the compression platform.

[0007] Furthermore, the clamping assembly comprises: A fixed clamping end, the fixed clamping end cooperates with one of the linear guide rails, and a fixed clamping surface is provided at an end away from the linear guide rail; A mobile clamping end, the mobile clamping end cooperates with the other linear guide rail and is fixedly provided with a hydraulic cylinder, the hydraulic cylinder is horizontally arranged, and the hydraulic cylinder is provided with a mobile clamping surface at one end close to the fixed clamping surface, and the mobile clamping surface is driven by the hydraulic cylinder to approach or move away from the fixed clamping surface; Wherein, when the movable clamping surface approaches the fixed clamping surface, the sample is clamped.

[0008] Furthermore, the fixed clamping surface and the movable clamping surface are the same in size and shape.

[0009] Furthermore, the fixed clamping surfaces of the two clamping assemblies are located on the same vertical plane.

[0010] Furthermore, the two linear guide rails in the accommodating space are arranged at left and right ends in the horizontal direction, and the accommodating space is provided with an opening at the front end in the horizontal direction, and the opening is at least larger than the two clamping components.

[0011] Furthermore, two mutually perpendicular positioning surfaces are respectively arranged at the bottom end in the vertical direction and the rear end in the horizontal direction in the accommodating space, and the two positioning surfaces are respectively fitted with the bottom end and one side edge of the sample.

[0012] Furthermore, a slide groove is arranged on the top of the clamping assembly at the top end, and the slide groove is arranged horizontally. The pressure plate cooperates with the slide groove and can slide along the slide groove in the horizontal direction.

[0013] Furthermore, a connecting piece is arranged on the top of the compression plate, and the connecting piece is connected to the compression end of the compression platform.

[0014] The beneficial effects of the present invention are as follows: the present invention arranges two linear guides on the base, the two linear guides are arranged vertically, one clamping assembly is arranged at the bottom of the accommodating space, and the other clamping assembly is located at the top of the accommodating space, and respectively cooperates with the two linear guides to move vertically along the two linear guides. The linear guides provide a vertical movement path to limit the lateral movement of the clamping assembly, so that the sample will not be buckled and damaged during the test. Through the cooperation of the linear guides and the clamping assembly, the stability of the sample during the compression test is guaranteed, and the test error caused by sample deviation or buckling is reduced, thereby improving the accuracy of the compression performance test of the carbon fiber material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of the test tooling of the present invention; Figure 2 is a schematic diagram of the structure of the base; Figure 3 is a front view of two clamping components; Figure 4 is a schematic diagram of the structure of the clamping assembly at the top; Figure 5 It is a front view of the fixed clamping end and the movable clamping end. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figures 1 to 5 Shown: A carbon fiber compression performance test tool, comprising: A base 1, the base 1 is placed on the compression platform, and the base 1 includes a containing space 11; Two linear guide rails 2, the two linear guide rails 2 are vertically arranged in the accommodating space 11, and are respectively located at two ends of the accommodating space 11 in the horizontal direction; Two clamping components 3, one of which is arranged at the bottom of the accommodating space 11, and the other clamping component 3 is located at the top of the accommodating space 11, and respectively cooperates with the two linear guide rails 2 to move vertically along the two linear guide rails 2. A pressure plate 31 is arranged on the top of the top clamping component 3, and the pressure plate 31 is connected to the compression end of the compression platform.

[0021] Two linear guides 2 are arranged on the base 1, and the two linear guides 2 are arranged vertically. One clamping assembly 3 is arranged at the bottom of the accommodating space 11, and the other clamping assembly 3 is located at the top of the accommodating space 11, and cooperates with the two linear guides 2 respectively to move vertically along the two linear guides 2. The linear guides 2 provide a vertical movement path to limit the lateral movement of the clamping assembly 3, so that the sample will not be buckled and damaged during the test. Through the cooperation of the linear guides 2 and the clamping assembly 3, the stability of the sample during the compression test is guaranteed, and the test error caused by sample deviation or buckling is reduced, thereby improving the accuracy of the compression performance test of the carbon fiber material.

[0022] In this embodiment, the clamping assembly 3 includes: A fixed clamping end 32, the fixed clamping end 32 cooperates with one of the linear guide rails 2, and a fixed clamping surface 321 is provided at an end away from the linear guide rail 2; A movable clamping end 33, the movable clamping end 33 cooperates with another linear guide rail 2 and is fixedly provided with a hydraulic cylinder 331, the hydraulic cylinder 331 is horizontally arranged, and a movable clamping surface 332 is arranged at one end of the hydraulic cylinder 331 close to the fixed clamping surface 321, and the movable clamping surface 332 is driven by the hydraulic cylinder 331 to approach or move away from the fixed clamping surface 321; When the movable clamping surface 332 approaches the fixed clamping surface 321 , the sample is clamped.

[0023] The fixed clamping end 32 cooperates with one of the linear guide rails 2 to provide a fixed point for the sample. It is provided with a fixed clamping surface 321 at the end away from the guide rail, which is used to support and clamp one side of the sample. The mobile clamping end 33 cooperates with another linear guide rail 2 and can move along the guide rail. A hydraulic cylinder 331 is fixedly provided at this end, and the hydraulic cylinder 331 is horizontally arranged. One end of the hydraulic cylinder 331 is close to the fixed clamping surface 321 and is provided with a mobile clamping surface 332. The hydraulic cylinder 331 is a key driving device, which can control the movement of the mobile clamping surface 332 to make the mobile clamping surface 332 approach or move away from the fixed clamping surface 321. Driven by the hydraulic cylinder 331, the mobile clamping surface 332 can apply sufficient force to clamp the sample to ensure the stability of the sample during the test. Through the precise control of the hydraulic cylinder 331, a uniform clamping force is provided for the sample, effectively avoiding the displacement or damage of the sample caused by uneven clamping force. At the same time, the presence of the linear guide rail 2 also ensures that the movement trajectory of the clamping assembly 3 is vertical, further improving the accuracy of the test.

[0024] The fixed clamping surface 321 and the movable clamping surface 332 are of the same size and shape.

[0025] By setting the fixed clamping surface 321 and the movable clamping surface 332 to be the same in size and shape, the uniform distribution of the clamping force is ensured. The same size and shape can provide symmetrical support and clamping force on two opposite sides of the sample, thereby avoiding the sample from being offset, deformed or damaged due to uneven clamping force, which is particularly important for obtaining accurate compression performance data.

[0026] Furthermore, the fixed clamping surfaces 321 of the two clamping components 3 are located on the same vertical plane.

[0027] By setting the fixed clamping surfaces 321 of the two clamping assemblies 3 on the same vertical plane, the sample is ensured to remain in a vertical state during the clamping and compression process to avoid tilting. By ensuring that the fixed clamping surfaces 321 are on the same vertical plane, the directions of the clamping force and the compression force on the sample are always consistent, further reducing the error.

[0028] In this embodiment, the two linear guide rails 2 in the accommodating space 11 are disposed at left and right ends in the horizontal direction. The accommodating space 11 is provided with an opening 111 at the front end in the horizontal direction. The opening 111 is at least larger than the two clamping components 3 .

[0029] The accommodating space 11 is provided with an opening 111 at the front end in the horizontal direction, and the size of the opening 111 is at least larger than the two clamping components 3. The opening 111 designed in this way is convenient for placing the sample into the tooling, or taking out the sample after the test, and is also convenient for observing and adjusting the placement position of the sample.

[0030] As a preferred embodiment of the above embodiment, two mutually perpendicular positioning surfaces 12 are respectively provided at the bottom end in the vertical direction and the rear end in the horizontal direction in the accommodating space 11, and the two positioning surfaces 12 are respectively fitted with the bottom end and one side of the sample.

[0031] The bottom positioning surface 12 located in the accommodating space 11 is used to fit with the bottom of the sample. This provides a reliable support surface, and the rear end positioning surface 12 located in the accommodating space 11 fits with one side of the sample to provide lateral positioning support, and then fits with one surface of the sample through the fixed clamping surface 321, thereby achieving three-sided positioning of the sample to prevent the sample from lateral deviation during the compression process.

[0032] In this embodiment, a slide groove 34 is provided on the top of the top clamping assembly 3. The slide groove 34 is arranged horizontally. The pressure plate 31 cooperates with the slide groove 34 and can slide along the slide groove 34 in the horizontal direction.

[0033] A connecting piece 311 is disposed at the top of the compression plate 31 , and the connecting piece 311 is connected to the compression end of the compression platform.

[0034] The pressure plate 31 cooperates with the slide groove 34 and can slide in the horizontal direction along the slide groove 34. This design allows the position of the pressure plate 31 to be fine-tuned as needed when clamping the sample, ensuring that the applied compression force always remains in the center of the sample, avoiding stress concentration and data errors caused by eccentric compression. The combined design of the slide groove 34 and the sliding pressure plate 31 increases the flexibility of the equipment and the convenience of operation. In actual operation, the user can accurately adjust the application point of the compression force by sliding the pressure plate 31 to adapt to samples of different sizes and shapes and ensure uniform distribution of force. In addition, this design also helps to make the final precise alignment after clamping the sample, further improving the accuracy of the test.

[0035] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A carbon fiber compression performance testing tool, characterized in that: include: A base, the base is placed on the compression platform, and the base includes a containing space; Two linear guide rails, the two linear guide rails are vertically arranged in the accommodating space and are respectively located at two ends of the accommodating space in a horizontal direction; Two clamping components, one of which is arranged at the bottom of the accommodating space, and the other clamping component is located at the top of the accommodating space, and respectively cooperates with the two linear guide rails to move vertically along the two linear guide rails. A pressure plate is arranged on the top of the clamping component at the top, and the pressure plate is connected to the compression end of the compression platform.

2. The carbon fiber compression performance testing tool according to claim 1, characterized in that: The clamping assembly comprises: A fixed clamping end, the fixed clamping end cooperates with one of the linear guide rails, and a fixed clamping surface is provided at an end away from the linear guide rail; A mobile clamping end, the mobile clamping end cooperates with the other linear guide rail and is fixedly provided with a hydraulic cylinder, the hydraulic cylinder is horizontally arranged, and the hydraulic cylinder is provided with a mobile clamping surface at one end close to the fixed clamping surface, and the mobile clamping surface is driven by the hydraulic cylinder to approach or move away from the fixed clamping surface; Wherein, when the movable clamping surface approaches the fixed clamping surface, the sample is clamped.

3. The carbon fiber compression performance testing tool according to claim 2, characterized in that: The fixed clamping surface and the movable clamping surface are the same in size and shape.

4. The carbon fiber compression performance testing tool according to claim 2, characterized in that: The fixed clamping surfaces of the two clamping assemblies are located on the same vertical plane.

5. The carbon fiber compression performance testing tool according to claim 1, characterized in that: The two linear guide rails in the accommodating space are arranged at left and right ends in the horizontal direction, and the accommodating space is provided with an opening at the front end in the horizontal direction, and the opening is at least larger than the two clamping components.

6. The carbon fiber compression performance testing tool according to claim 5, characterized in that: Two mutually perpendicular positioning surfaces are respectively arranged at the bottom end in the vertical direction and the rear end in the horizontal direction in the accommodating space, and the two positioning surfaces are respectively fitted with the bottom end and one side of the sample.

7. The carbon fiber compression performance testing tool according to claim 1, characterized in that: A slide groove is arranged on the top of the clamping assembly at the top end, and the slide groove is arranged horizontally. The pressure plate cooperates with the slide groove and can slide along the slide groove in the horizontal direction.

8. The carbon fiber compression performance testing tool according to claim 7, characterized in that: A connecting piece is arranged on the top of the compression plate, and the connecting piece is connected to the compression end of the compression platform.

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