A device for testing the tensile resistance of a metallic material

Abstract

The utility model relates to metal material tensile resistance test technical field, concretely is a kind of metal material tensile resistance testing device, including base, drive body and clamping body, the clamping body includes outer body, driving part and inner body, the base is symmetrically equipped with outer body, the driving part of being fixedly installed between two outer bodies can be telescopic, the outer body is in and is equipped with clamping mouth, the inner body is slidably installed in the clamping mouth, the inner body is installed at least two along the outer body inner surface path;Solved the problem that the metal material tensile resistance test device of existing faces different size metal piece and is difficult to real-time adaptation needs to replace tooling to influence test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tensile strength testing technology for metallic materials, specifically a tensile strength testing device for metallic materials. Background Technology

[0002] Tensile strength testing is required to evaluate the mechanical properties of metallic materials. However, when conducting tensile tests on different metallic parts, existing tensile strength testing devices are difficult to adapt in real time and require changing clamping fixtures, resulting in low efficiency of tensile strength testing.

[0003] Therefore, this utility model provides a tensile strength testing device for metallic materials to solve the above-mentioned problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing tensile strength testing device for metal materials is difficult to adapt to metal parts of different sizes in real time, and tooling needs to be changed, which affects the testing efficiency.

[0005] This utility model provides the following technical solution: a tensile strength testing device for metallic materials, comprising a base, a driving body, and a clamping body. The clamping body comprises an outer body and an inner body. The outer bodies are symmetrically installed on the base. A telescopic driving component is fixedly installed between the two outer bodies. A clamping opening is provided inside the outer body. An inner body is slidably installed inside the clamping opening. At least two inner bodies are installed along the inner surface path of the outer bodies.

[0006] The clamping opening has a trumpet-shaped structure.

[0007] The two sides have symmetrically arranged trumpet-shaped clamping openings.

[0008] An adsorption element is fixedly installed on the inner surface of the inner body.

[0009] The outer inner wall is provided with a slide rail, and the inner body is slidably installed in the slide rail. The cross-sections of the slide rail and the inner body are mutually complementary convex structures.

[0010] A damper is installed between the inner end and the outer end.

[0011] The inner body has a protrusion fixedly installed at its end.

[0012] A friction layer is fixedly installed on the surface of the clamp.

[0013] The area of ​​the clamp is larger than the area of ​​the slide.

[0014] The beneficial effects of this utility model are as follows: This invention, through the cooperation of the inner body, outer body, and support member, enables the inner body to move along the clamping opening of the trumpet-shaped structure during the stretching process after clamping the metal part, thereby reducing the gap or diameter and continuously increasing the clamping force on the metal part. In turn, the clamping force on the metal part is continuously enhanced during the tensile test, so that the clamping force increases simultaneously with the tensile force, which helps to ensure the stability of the clamping and prevents the metal material from falling off during the tensile test. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall side sectional structure of this utility model; Figure 2 This utility model Figure 1 A magnified structural diagram of A in the diagram.

[0017] In the figure: 1. Base; 2. Drive body; 3. Outer body; 31. Clamping port; 32. Slide rail; 4. Inner body; 41. Adsorption component; 42. Protrusion; 43. Friction layer; 5. Damper. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0021] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] To address the problem that existing tensile strength testing devices for metallic materials are difficult to adapt to in real time for metal parts of different sizes, requiring tooling changes and affecting testing efficiency, such as... Figure 1 and 2 As shown, this embodiment of the present disclosure provides a tensile strength testing device for metallic materials, including a base 1, a driving body 2, and a clamping body. The clamping body includes an outer body 3 and an inner body 4. The outer bodies 3 are symmetrically installed on the base 1, and a telescopic driving member is fixedly installed between the two outer bodies 3. A clamping opening 31 is provided in the outer body 3, and an inner body 4 is slidably installed in the clamping opening 31. At least two inner bodies 4 are installed along the inner surface path of the outer bodies 3.

[0023] like Figure 1 As shown, it should be noted that either of the two outer bodies 3 can be slidably mounted on the base 1, while the other can be fixedly mounted on the base 1.

[0024] It should be noted that the driving body 2 can adopt a structure that can push an object to move linearly in the prior art, and a hydraulic cylinder is used in the embodiment of this disclosure.

[0025] It should be noted that the clamping opening 31 and the inner body 4 can be structures that mate with metal parts in the prior art, such as ring, square, rectangular or other irregular structures.

[0026] When testing the tensile strength of a metal, the two ends of the metal part are first placed in the clamping opening 31 and clamped by the inner body 4. Then, the outer body 3 and the inner body 4 are moved by the extension and retraction of the driving component to stretch the metal part, thereby testing the tensile strength of the metal part.

[0027] like Figure 1 and 2 As shown, the clamping opening 31 has a trumpet-shaped structure. It should be noted that the side of the clamping opening 31 with the smaller radial direction faces the insertion end of the metal part.

[0028] Through the flared clamping opening 31, when the driving body 2 moves the outer body 3 and the inner body 4, the inner body 4 can move along the flared clamping opening 31 to reduce the gap or diameter. As the driving body 2 moves the outer body 3 and the inner body 4, the reduced gap or diameter of the inner body 4 increases the pressure applied to the metal part. This continuously enhances the clamping force on the metal part during the tensile test, so that the clamping force increases simultaneously with the increase in tensile force, which helps to ensure stable clamping and prevents detachment during the tensile test of the metal material.

[0029] like Figure 1 As shown, the two flared clamping openings 31 are symmetrically opened on both sides.

[0030] An adsorption element 41 is fixedly installed on the inner surface of the inner body 4. The adsorption element 41 can enhance the clamping force of the inner body 4 on the metal parts.

[0031] It should be noted that the adsorption component 41 can adopt any structure in the prior art that can adsorb or fix metal parts, such as using electromagnet magnetic adsorption or negative pressure suction cup for fixation.

[0032] In this embodiment, the adsorption element 41 is an electromagnet. By embedding the electromagnet in the inner body 4, it is energized during the clamping process of the inner body 4 to adsorb the metal part, thereby enhancing the adsorption force on the metal part and helping to ensure stable clamping and prevent it from falling off during the tensile test.

[0033] It should be noted that the circuitry and control program of the electromagnet can be implemented using any feasible method in the existing technology, and will not be elaborated further here.

[0034] like Figure 1 and 2 As shown, the inner wall of the outer body 3 is provided with a slide rail 32, and the inner body 4 is slidably installed in the slide rail 32. The cross-sections of the slide rail 32 and the inner body 4 are mutually cooperating convex structures.

[0035] As the inner body 4 slides along the clamping opening 31 inside the outer body 3, the sliding body slides along the slide rail 32, thereby driving the clamping body that holds the metal part to move. During the movement of the clamping body, the slide rail 32 and the inner body 4, which cooperate with each other and have a convex cross-section, can ensure that the inner body 4 fits against the inner surface of the outer wall.

[0036] It should be noted that the damper 5 can be any existing damping structure that can stretch and automatically reset.

[0037] like Figure 1 and 2 As shown, a damper 5 is installed between the sliding body and the outer body 3 along the moving direction. The damper 5 enables the sliding body to stably return to the position with the minimum radial spacing inside the clamping opening 31. The diameter and spacing of the inner body 4 located at the position with the minimum radial spacing inside the clamping opening 31 are smaller than those of the metal parts.

[0038] The damper 5 can also directly use a compression spring from the prior art.

[0039] It should be noted that during the process of inserting the metal part into the clamping port 31, since the spacing or diameter of the inner body 4 is smaller than that of the metal part, the metal part pushes the inner body 4 to squeeze the damper 5 and move the horn-shaped structure inside the outer body 3. This, in conjunction with the support, causes the spacing or diameter of the inner body 4 to continuously increase during the movement, thereby enabling the spacing or diameter of the inner body 4 to match that of the metal part and allowing the metal part to be inserted into the inner body 4.

[0040] like Figure 1 and 2 As shown, a protrusion 42 is fixedly installed at one end of the inner body 4.

[0041] like Figure 1 and 2 As shown, the surface of the protrusion 42 can contact the end of the metal part, thereby limiting the metal part and facilitating tensile strength testing.

[0042] It should be noted that the adsorption element 41 is fixedly installed on the surface of the protrusion 42, thereby enabling it to adsorb metal parts.

[0043] A friction layer 43 is fixedly installed on the surface of the clamping body. The friction layer 43 increases the friction between the inner body 4 and the metal part, thereby improving the clamping force on the metal part.

[0044] It should be noted that the friction layer 43 in this embodiment is made of rubber. The rubber material can increase the friction, thereby improving the clamping force on the metal part. On the other hand, the rubber material can also better fit and wrap the metal part by being flexible and adhering to the surface of the metal part. This avoids insufficient contact caused by surface roughness and unstable clamping caused by uneven clamping force, which is conducive to improving the clamping force and making it easier to fix.

[0045] The area of ​​the clamping body is larger than the area of ​​the slide rail 32. The fact that the area of ​​the clamping body is larger than the area of ​​the slide rail 32 ensures that it is stably clamped and fits against the inner surface of the outer body 3, preventing the clamping body from sinking into the slide rail 32.

[0046] When conducting tensile tests on metal parts, the two ends of the metal parts are first placed into the clamping openings 31 of the outer bodies 3 on both sides, and the ends of the metal parts are pushed up by the inner body 4 to compress the damping and move within the clamping openings 31. This, in conjunction with the support, causes the spacing or diameter of the inner body 4 to continuously increase during the movement, thereby enabling the spacing or diameter of the inner body 4 to match the metal parts and allowing the metal parts to be inserted into the inner body 4 for fixation.

[0047] After the inner body 4 attaches to and fixes the metal part, the adsorption component 41 is activated to enhance the clamping force on the metal part. Then, the driving body 2 is activated to drive the outer body 3 and the inner body 4 to move linearly away from each other. During the process of the outer body 3 and the inner body 4 moving away from each other, the movement of the outer body 3 allows the inner body 4 to move along the clamping opening 31 of the trumpet-shaped structure, thereby reducing the gap or diameter. As the driving body 2 drives the outer body 3 and the inner body 4 to move, the reduced gap or diameter of the inner body 4 increases the pressure applied to the metal part. This continuously enhances the clamping force on the metal part during the tensile test, so that the clamping force increases simultaneously with the increase in tensile force, which helps to ensure that the metal material is clamped stably and does not easily detach during the tensile test.

[0048] After the tensile test is completed, the metal part is removed, and the inner body 4 automatically resets to the position of minimum radial spacing inside the clamping port 31 under the drive of the damper 5 to wait for the next tensile test.

[0049] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tensile strength testing device for metallic materials, comprising a base (1), a driving body (2), and a clamping body, characterized in that: The clamping body includes an outer body (3) and an inner body (4). The outer body (3) is symmetrically installed on the base (1). A telescopic drive is fixedly installed between the two outer bodies (3). A clamping port (31) is opened in the outer body (3). The inner body (4) is slidably installed in the clamping port (31). At least two inner bodies (4) are installed along the inner surface path of the outer body (3).

2. The tensile strength testing device for metallic materials according to claim 1, characterized in that: The clamping opening (31) has a trumpet-shaped structure.

3. The tensile strength testing device for metallic materials according to claim 2, characterized in that: The two sides have symmetrically opened trumpet-shaped clamping openings (31).

4. The tensile strength testing device for metallic materials according to claim 3, characterized in that: An adsorption component (41) is fixedly installed on the inner surface of the inner body (4).

5. The tensile strength testing device for metallic materials according to claim 4, characterized in that: The inner wall of the outer body (3) is provided with a slide (32), and the inner body (4) is slidably installed in the slide (32). The cross-sections of the slide (32) and the inner body (4) are convex structures that cooperate with each other.

6. The tensile strength testing device for metallic materials according to claim 5, characterized in that: A damper (5) is installed between the end of the inner body (4) and the end of the outer body (3).

7. The tensile strength testing device for metallic materials according to claim 6, characterized in that: The inner body (4) has a protrusion (42) fixedly installed at its end.

8. The tensile strength testing device for metallic materials according to claim 7, characterized in that: A friction layer (43) is fixedly installed on the surface of the inner body (4).

9. The tensile strength testing device for metallic materials according to claim 8, characterized in that: The area of ​​the inner body (4) is larger than the area of ​​the slide (32).

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