CN217033282U

CN217033282U - Sampling device for soft material uniaxial tension sample

Info

Publication number: CN217033282U
Application number: CN202220776262.7U
Authority: CN
Inventors: 张明; 刘浩飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-07-22
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a sampling device for a uniaxial soft material tensile sample, which comprises a base and a cutting blade, wherein the base is made of a tough material, and the cutting blade is fixedly arranged in the base or on the surface of the base; the cutting blade is a cavity and is made of metal or ceramic materials which can be processed into a sharp blade, and the opening of the cutting blade is polished for edging; the cutting blade comprises a first clamping area, a stretching area and a second clamping area; the first clamping area and the second clamping area are symmetrically arranged on two sides of the stretching area, and the first clamping area and the second clamping area are connected with the stretching area through arc sections to form a dog bone shape. The utility model has the characteristics of convenience, high efficiency and high qualification rate of the manufactured test piece.

Description

Sampling device for soft material uniaxial tension sample

Technical Field

The utility model relates to the technical field of sampling devices, in particular to a sampling device for a soft material uniaxial tension sample.

Background

The uniaxial tension test of traditional low-carbon steel requires that the test piece must be dog bone-shaped, and dog bone-shaped cross-section has the characteristics of middle thin, both ends thick to provide sufficient clamping force at both ends, obtain even stress and strain field at the middle part, so that obtain accurate uniaxial tension experimental data. In the prior art, the adopted sample for manufacturing the uniaxial tensile test is generally cut by scissors or directly cut on a test piece by a cutter, the edge of the adopted sample obtained by the methods is often uneven, and the sample can be irreversibly damaged in the cutting process, so that the accuracy of data of the uniaxial tensile test is influenced. In view of the defects of the above solutions in actual manufacturing, implementation and use, the present design is created after many kinds of ingenuity and experiments with the help of professional knowledge and experience, so that a sampling device for soft material uniaxial tension samples is provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a sampling device for uniaxial tensile test specimens of soft materials, so as to solve the above problems.

The sampling device for the soft material uniaxial tension sample can be realized by the following technical scheme:

the utility model relates to a sampling device of a soft material uniaxial tensile sample, which is applied to a uniaxial tensile sample of a superelastic material, a rubber soft material, a composite material or biological soft tissue and comprises a base and a cutting blade, wherein the base is made of a tough material, and the cutting blade is fixedly arranged in the base or on the surface of the base; the cutting blade is a cavity and is made of metal or ceramic materials which can be processed into a sharp blade, and an opening of the cutting blade is polished to be edged; the cutting blade comprises a first clamping area, a stretching area and a second clamping area; the first clamping area and the second clamping area are symmetrically arranged on two sides of the stretching area, and the first clamping area and the second clamping area are connected with the stretching area through arc sections to form a dog bone shape.

In one embodiment, the base is made of organic glass or wood.

In one embodiment, the base is square, circular, oval, diamond, or triangular in shape.

In one embodiment, the cutting blade is made of stainless steel.

In one embodiment, the width of each of the first clamping zone and the second clamping zone is a1, the width of the stretching zone is a2, and the value of the width a1 and the width a2 is in the range of 1.5: 1 to 10: 1.

In one embodiment, the lengths of the first clamping zone and the second clamping zone are both b1, the width of the stretching zone 122 is b2, and the values of the lengths b1 and b2 are in the range of 1:2 to 1: 10.

In one embodiment, the connecting portions of the first clamping area and the second clamping area with the stretching area are circular arcs.

In one embodiment, the radius of the circular arc ranges from a2/2 to 5 × a 1.

In one embodiment, the connecting portions of the first clamping area and the second clamping area with the stretching area are elliptical arcs.

In one embodiment, the major axis of the elliptical arc ranges from a1/4 to 5 a1, and the minor axis ranges from a2/4 to 5 a 2.

Compared with the prior art, the sampling device for the soft material uniaxial tension sample has the beneficial effects that:

according to the sampling device for the uniaxial tension sample of the soft material, the cut edge is matched with the base to cut the soft material sample meeting the requirement, and the manufactured soft material sample has the characteristics of smoothness and flatness and is beneficial to obtaining accurate data of a uniaxial tension test; the sampling device is convenient and efficient, and the qualification rate of the manufactured test piece is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a sampling device for uniaxial soft material tensile samples according to the utility model;

fig. 2 is a schematic diagram showing the dimensional structure of the cutting edge in the sampling device for uniaxial soft material tensile samples of the utility model shown in fig. 1.

The figures are marked by: 11, a base; 12, a cutting blade; 121, a first clamping area; 122, a stretching zone; 123, a second clamping area.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.

Further, in the present disclosure, unless expressly stated or limited otherwise, the first feature may be located above or below the second feature and may comprise both the first and second features in direct contact, or may comprise the first and second features not being in direct contact but being in contact with each other by means of another feature therebetween. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Referring to fig. 1, the sampling device for the uniaxial tensile sample of the soft material of the present invention is mainly applied to the preparation of the uniaxial tensile sample of the superelastic material, the soft rubber material, the composite material or the biological soft tissue, and mainly comprises a base 11 and a cutting blade 12, wherein the base 11 is made of a material with toughness, the cutting blade 12 is fixedly arranged in the base 11 or on the surface of the base 11, and the impact of the beating of the weight on the cutting blade 12 can be effectively relieved by the action of the base 11, so that the damage of the sampling sample is caused; the cutting blade 12 is a cavity made of metal or ceramic materials which can be processed into a sharp blade, and the opening of the cutting blade 12 is polished for edging, so that the cutting blade 12 can effectively cut off a neat section; the cutting edge 12 comprises a first clamping zone 121, a stretching zone 122 and a second clamping zone 123; the first clamping area 121 and the second clamping area 123 are symmetrically disposed on two sides of the stretching area 122, and the first clamping area and the second clamping area are respectively connected with the stretching area 122 through arc sections to form a dog bone shape.

Referring to fig. 1, the base 11 may be an organic glass base or a wood base, in this embodiment, the base 11 is the organic glass base, and since the organic glass has impact resistance, it is convenient to ensure sufficient toughness, and it is prevented that the sample specimen is brittle and broken when the heavy object is knocked, and meanwhile, the transparency of the organic glass can be used to conveniently observe whether the cut product is aligned and whether the cut product is completely cut off. The shape of the base 11 may be square, circular, diamond, oval, triangular or other shapes, and in this embodiment, the shape of the base 11 is square. In this embodiment, the cutting blade 12 is made of stainless steel. The shape of the connection portion between the first clamping area 121 and the stretching area 122 and the connection portion between the second clamping area 123 and the stretching area 121 are circular arcs or elliptical arcs, and in this embodiment, the shape of the connection portion between the first clamping area 121 and the stretching area 122 and the connection portion between the second clamping area 123 and the stretching area 122 are elliptical arcs. In this embodiment, the lower end of the cutting blade 12 is firmly bonded to the base 11 by glue.

Referring to fig. 1 and fig. 2, the width of the first clamping area 121 and the width of the second clamping area 123 are a1, the width of the stretching area 122 is a2, and the value ranges between the width a1 and the width a2 are 1.5: 1 to 10: 1; the lengths of the first clamping area 121 and the second clamping area 123 are b1, the width of the stretching area 122 is b2, and the values of the lengths b1 and b2 range from 1:2 to 1: 10. When the first clamping area 121 and the second clamping area 123 are respectively connected with the stretching area 122 in the shape of circular arcs, the radius of the circular arc ranges from a2/2 to 5 × a1, and preferably, the radius of the circular arc is (a1+ a 2)/2; when the shape of the connecting portion of each of the second clamping area 123 and the stretching area 122 is an elliptical arc, the major axis of the elliptical arc ranges from a1/4 to 5 × a1, and the minor axis thereof ranges from a2/4 to 5 × a 2; preferably, the major axis of the elliptical arc is a1/2 and the minor axis thereof is a 2.

It should be noted that, the specific working process of the sampling device for the soft material uniaxial tension sample of the present invention is as follows: the method comprises the steps of flatly paving an experimental soft material sample to be tested on a test bed or an operation bed, selecting a proper test area on the soft material sample to be tested, placing the side of a cutting blade 12 of the sampling device on the test area, and knocking 1-3 times on a base 11 by using a heavy object to enable the cutting blade 12 to cut a sample matched with the cutting blade in shape, so that a needed uniaxial tension test piece is obtained.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. A sampling device of a soft material uniaxial tension sample is applied to a uniaxial tension sample of a superelasticity material, a rubber soft material, a composite material or biological soft tissue, and is characterized by comprising a base and a cutting blade, wherein the base is made of a tough material, and the cutting blade is fixedly arranged in the base or on the surface of the base; the cutting blade is a cavity and is made of metal or ceramic materials which can be processed into a sharp blade, and an opening of the cutting blade is polished to be edged; the cutting blade comprises a first clamping area, a stretching area and a second clamping area; the first clamping area and the second clamping area are symmetrically arranged on two sides of the stretching area, and the first clamping area and the second clamping area are respectively connected with the stretching area through arc sections to form a dog bone shape.

2. The soft material uniaxial tension sample sampling device according to claim 1, wherein the base is made of an organic glass base or a wood base.

3. The soft material uniaxial tensile specimen sampling device of claim 2, wherein the base is square, circular, oval, diamond or triangular in shape.

4. The soft material uniaxial tension sample sampling device according to claim 1, wherein the cutting blade is made of stainless steel.

5. The device for sampling the uniaxial soft material tensile specimen according to claim 4, wherein the width of each of the first clamping zone and the second clamping zone is a1, the width of the stretching zone is a2, and the value of the width a1 and the value of the width a2 are in the range of 1.5: 1 to 10: 1.

6. The device for sampling the uniaxial soft material tensile specimen according to claim 5, wherein the lengths of the first clamping zone and the second clamping zone are both b1, the width of the stretching zone 122 is b2, and the values of the length b1 and the length b2 range from 1:2 to 1: 10.

7. The soft material uniaxial tension sample sampling device according to claim 6, wherein the connecting parts of the first clamping area and the second clamping area with the tension area respectively are in the shape of circular arcs.

8. The apparatus for sampling the uniaxial soft material tensile specimen according to claim 7, wherein the radius of the circular arc ranges from a2/2 to 5 x a 1.

9. The soft material uniaxial tension sample sampling device according to claim 6, wherein the connecting parts of the first clamping area and the second clamping area with the tension area respectively are in the shape of an elliptical arc.

10. The device for sampling the uniaxial tension specimen of soft materials as claimed in claim 9, wherein the major axis of the elliptical arc ranges from a1/4 to 5 a1, and the minor axis ranges from a2/4 to 5 a 2.