A jig for manufacturing a test sample

Abstract

This utility model relates to the field of fixture technology, specifically a sample preparation fixture, including a base and at least one set of positioning components. The positioning components include a fixing part and a shim. The fixing part includes multiple columns fixedly mounted on the base, with the columns evenly spaced along the length of the base. The shim is movably mounted on the base along its width, located between the side wall of the base and the multiple columns. A bolt is threaded through the side wall of the base, with the tail of the bolt contacting or separating from the shim. This sample preparation fixture has a simple structure and low manufacturing cost; it is easy to operate, enabling the preparation of different samples. Furthermore, the samples experience uniform stress during curing, improving testing accuracy and preparation efficiency. It has a wide range of applications and reduces the manufacturing cost of different samples.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a sample making fixture. Background Technology

[0002] A fixture is a device used in mechanical manufacturing or testing to fix a workpiece or sample in the correct position for construction, inspection, or testing. In sample preparation and testing, the main function of a fixture is to ensure that the sample is stably and accurately fixed on the testing equipment, thereby obtaining reliable test results. With the continuous advancement of science and technology and the rapid development of industrial production, the requirements for the testing accuracy and production efficiency of samples are becoming increasingly stringent. For example, samples for composite engines need to have their mechanical properties tested at various interfaces (materials), and the destructive test strength of the engine needs to be estimated based on the interface properties to reduce research costs and provide data support for the quality of composite engines.

[0003] The diverse materials used in specimen fabrication (including metallic, plastic, and composite materials) result in complex interfaces and a large workload when producing specimens in batches. Traditional fixtures are cumbersome to operate and have a narrow range of applications, leading to low testing accuracy and fabrication efficiency. Furthermore, different fixtures are required for different specimens, resulting in high fabrication costs. Therefore, a specimen fabrication fixture is urgently needed to address these issues. Utility Model Content

[0004] To address the technical problems of traditional fixtures being complex to operate, having a narrow range of applications, resulting in low test accuracy and production efficiency, and requiring different fixtures to produce different samples, leading to high production costs, this utility model provides a sample making fixture with a simple structure and convenient operation. It enables the production of different samples, ensures uniform stress on the samples during curing, improves test accuracy and production efficiency, has a wide range of applications, and reduces the production cost of different samples.

[0005] This utility model provides a sample preparation fixture, including a base and at least one set of positioning components. The positioning components include a fixing part and a shim. The fixing part includes multiple columns fixedly mounted on the base, with the columns evenly spaced along the length of the base. The shim is movably mounted on the base along its width, located between the side wall of the base and the columns. A bolt is threaded through the side wall of the base, with the tail of the bolt contacting or separating from the shim. The sample is placed on the base, positioned between the shim and the columns. A person manually moves the shim on the base closer to the sample. The person tightens the bolt using a torque wrench until the bolt tail contacts the shim. The bolt presses the shim against the sample, and the shim, in turn, presses the sample against the columns, resulting in uniform force on the sample and curing. After curing, the bolt is loosened, separating the bolt tail from the shim. The person then manually moves the shim away from the sample on the base and removes the cured sample, completing the sample preparation.

[0006] Furthermore, the base is U-shaped, with multiple columns fixedly mounted on the bottom wall of the base, and the shims movably mounted on the bottom wall of the base; two sets of positioning components are provided, symmetrically arranged about the axis of the base, and bolts are threaded through both side walls of the base. This fixture allows for the simultaneous fabrication of multiple samples, further improving sample fabrication efficiency.

[0007] Furthermore, multiple threaded holes are evenly distributed on both side walls of the base, and bolts are threaded into these holes. The head of the bolt is located outside the base, and the tail of the bolt is located inside the base. The bolts are fixed to the side walls of the base through the threaded holes. Adjustment bolts are used when fixing or removing the sample.

[0008] Furthermore, a washer is provided on the head of the bolt, and the washer contacts the side wall of the base. When a person tightens the bolt with a torque wrench, the washer prevents the bolt from stripping and further locks it onto the base.

[0009] Furthermore, the height of the shim is the same as the height of the base sidewall, and the length of the shim is the same as the length of the base. The position of the shim on the base can be manually adjusted as needed, ensuring the shim does not extend beyond the base, making it more convenient and safer to use.

[0010] Furthermore, the height of the column is less than the height of the base sidewall. This simplifies the manufacturing of the fixture.

[0011] Furthermore, an oxide layer is provided on the base. The purpose of the oxide layer is to prevent the base from rusting and affecting its use.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The fixture of this utility model has a simple structure and low manufacturing cost; it is easy to operate, realizes the production of different samples, and the sample is subjected to uniform force during curing, which improves the testing accuracy and production efficiency of the sample. It has a wide range of applications and reduces the production cost of different samples; it has the advantages of good applicability, versatility and economy. Attached Figure Description

[0014] Figure 1 This is a top view schematic diagram of a sample making fixture according to the present invention;

[0015] Figure 2 This is a side view of the manufacturing fixture of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the jig used in this utility model for making a sample.

[0017] Figure 4 This is a schematic diagram of the structure of the jig used to manufacture sample two according to this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the jig used to manufacture the sample three according to this utility model;

[0019] The numbers in the attached diagram are:

[0020] 1. Base; 2. Shim; 3. Column; 4. Bolt; 41. Washer. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-5 As shown, a sample fabrication fixture includes a base 1 and at least one set of positioning components. The positioning components include a fixing part and a shim 2. The fixing part includes multiple columns 3 fixedly mounted on the base 1, with the columns 3 evenly spaced along the length of the base 1. The shim 2 is movably mounted on the base 1 along its width, located between the side wall of the base 1 and the multiple columns 3. A bolt 4 is threaded through the side wall of the base 1, with the tail of the bolt 4 contacting or separating from the shim 2. Preferably, a flexible pad is provided at the tail of the bolt 4 to prevent damage to the shim 2 after prolonged contact between the bolt 4 and the shim 2.

[0023] The sample is placed on base 1, positioned between pad 2 and multiple columns 3. A person manually moves pad 2 on base 1 closer to the sample. A person then tightens bolt 4 using a torque wrench until the tail of bolt 4 contacts pad 2. Bolt 4 presses pad 2 firmly against the sample, and pad 2, in turn, presses the sample firmly against the columns 3. The sample is subjected to uniform force, allowing it to cure. After curing, bolt 4 is manually loosened, separating the tail of bolt 4 from pad 2. The person then manually moves pad 2 on base 1 away from the sample. The cured sample is then removed. The sample preparation is complete, improving testing accuracy and production efficiency.

[0024] See Figure 3 The process of preparing Specimen 1 (a rectangular composite specimen) involves bonding and fixing a support body, a carbon plate, and a rubber plate (made of EPDM) from the outside in. Specimen 1 is placed on base 1, positioned between pad 2 and multiple columns 3, with the column of the support body precisely wedged between two adjacent columns 3 (the two adjacent columns 3 clamp the column of the support body, maintaining its stability). Pad 2 is manually moved on base 1 closer to Specimen 1. Bolt 4 is tightened using a torque wrench until its tail contacts pad 2. Bolt 4 presses pad 2 firmly against Specimen 1, which in turn presses Specimen 1 firmly against the multiple columns 3 (the support body is pressed against the multiple columns 3), allowing Specimen 1 to cure. After curing, bolt 4 is manually loosened, and the cured Specimen 1 is removed. Specimen 1 is primarily used for tear-off tests, and its support body is used to connect to an external testing machine.

[0025] See Figure 4 The fabrication process of Specimen 2 (a rectangular composite specimen) involves multiple bonded structural layers, including a bonded metal plate, a rubber plate (EPDM), and a carbon plate. Specimen 2 is placed on base 1, positioned between pad 2 and multiple uprights 3. Pad 2 is manually moved on base 1 closer to Specimen 2. Bolt 4 is tightened using a torque wrench until its tail contacts pad 2. Bolt 4 presses pad 2 firmly against Specimen 2 (metal plate), which in turn presses Specimen 2 (carbon plate) firmly against the uprights 3, allowing Specimen 2 to cure. After curing, bolt 4 is manually loosened, and the cured Specimen 2 is removed. Specimen 2 is primarily used for shear tests and is connected to an external testing machine.

[0026] See Figure 5The preparation process of Specimen 3 (a rectangular composite specimen) involves multiple structural layers bonded together, each layer containing a bonded carbon plate and a rubber plate (EPDM). Specimen 3 is placed on base 1, positioned between pad 2 and multiple pillars 3. Pad 2 is manually moved on base 1 closer to Specimen 3. Bolt 4 is tightened using a torque wrench until its tail contacts pad 2. Bolt 4 presses pad 2 firmly against Specimen 3 (one carbon plate), and pad 2, in turn, presses Specimen 3 (the other carbon plate) firmly against the pillars 3, allowing Specimen 3 to cure. Once cured, bolt 4 is manually loosened, and the cured Specimen 3 is removed. Specimen 3 is primarily used for shear tests and is connected to an external testing machine.

[0027] The structures of specimen 1, specimen 2 and specimen 3 are complex and have different thicknesses. The fixture can be made to produce different specimens such as specimen 1, specimen 2 and specimen 3, and can ensure that the stress on each interface (material) of the specimen is uniform.

[0028] The sample preparation fixture of this embodiment has a simple structure and low manufacturing cost; it is easy to operate, realizes the preparation of different samples, and the sample is subjected to uniform stress during curing, which improves the testing accuracy and preparation efficiency of the sample, has a wide range of applications, and reduces the preparation cost of different samples; it has the advantages of good applicability, versatility and economy.

[0029] In one possible implementation, the base 1 is U-shaped, with multiple columns 3 fixedly mounted on the bottom wall of the base 1, and the shims 2 movably mounted on the bottom wall of the base 1. Preferably, the positioning components are provided in two sets, symmetrically arranged about the axis of the base 1, and bolts 4 are threaded through both side walls of the base 1. The fixture can simultaneously fabricate multiple specimens (sample 1, sample 2, and sample 3), further improving the specimen fabrication efficiency. Specifically, the fixture can fabricate four specimens (sample 1), two specimens (sample 2), and two specimens (sample 3) at a time. Preferably, there is a certain distance between the two sets of positioning components to avoid positional interference between multiple specimens when the two sets of positioning components are fabricating specimens simultaneously.

[0030] In one possible implementation, multiple threaded holes are evenly distributed on both side walls of the base 1, and bolts 4 are threaded into these holes. The head of the bolt 4 is located outside the base 1, and the tail of the bolt 4 is located inside the base 1. The bolts 4 are fixed to the side walls of the base 1 through the threaded holes. When fixing or removing the sample, the corresponding adjusting bolts 4 are used.

[0031] In one possible implementation, a washer 41 is provided on the head of the bolt 4, and the washer 41 contacts the side wall of the base 1. When a person tightens the bolt 4 with a torque wrench, the washer 41 prevents the bolt 4 from stripping and further locks it onto the base 1.

[0032] In one possible implementation, the height of the shim 2 is the same as the height of the side wall of the base 1, and the length of the shim 2 is the same as the length of the base 1. The position of the shim 2 on the base 1 can be manually adjusted by the user, ensuring that the shim 2 does not extend beyond the base 1, making the shim 2 more convenient and safer to use.

[0033] In one possible implementation, the height of the column 3 is less than the height of the side wall of the base 1. For example, when making sample one, the purpose of the column 3 is to clamp the support on sample one, keeping sample one stable. Since the height of the column 3 is less than the height of the side wall of the base 1, the column 3 can fulfill its function while reducing weight, simplifying the manufacture of the fixture.

[0034] As one possible implementation, the base 1 is provided with an oxide layer. The base 1 is made of steel. The purpose of the oxide layer is to prevent the base 1 from rusting and affecting its use.

[0035] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A sample preparation fixture, characterized in that, The device includes a base (1) and at least one positioning assembly. The positioning assembly includes a fixing part and a pad (2). The fixing part includes multiple columns (3) fixedly disposed on the base (1). The multiple columns (3) are evenly spaced along the length direction of the base (1). The pad (2) is movably disposed on the base (1) along the width direction of the base (1). The pad (2) is located between the side wall of the base (1) and the multiple columns (3). A bolt (4) is provided through the side wall of the base (1). The tail of the bolt (4) contacts or separates from the pad (2).

2. The sample preparation fixture according to claim 1, characterized in that, The base (1) is U-shaped, and multiple columns (3) are fixedly installed on the bottom wall of the base (1). The pad (2) is movably installed on the bottom wall of the base (1). There are two sets of positioning components. The two sets of positioning components are symmetrically arranged with the axis of the base (1) as the center line. Bolts (4) are installed through both sides of the base (1).

3. The sample preparation fixture according to claim 2, characterized in that, Multiple threaded holes are evenly arranged on both sides of the base (1), and bolts (4) are threaded in the threaded holes. The head of the bolt (4) is located outside the base (1), and the tail of the bolt (4) is located inside the base (1).

4. The sample preparation fixture according to claim 3, characterized in that, The head of the bolt (4) is provided with a washer (41), which contacts the side wall of the base (1).

5. The sample preparation fixture according to claim 2, characterized in that, The height of the pad (2) is the same as the height of the side wall of the base (1), and the length of the pad (2) is the same as the length of the base (1).

6. The sample preparation fixture according to claim 2, characterized in that, The height of the column (3) is less than the height of the side wall of the base (1).

7. The sample preparation fixture according to claim 1, characterized in that, An oxide layer is provided on the base (1).

Images