A sample holder for a high-temperature laser confocal microscope

Abstract

This utility model relates to a sample holder for a high-temperature laser confocal microscope, comprising a drive shaft connecting part, a transition extension part, and a sample holding part connected in sequence. The drive shaft connecting part is connected to the drive shaft of the high-temperature laser confocal microscope. One end of the drive shaft is a screw structure, and the other end is fixedly connected to the transition extension part. The end of the sample holding part is provided with a pin hole, and the sample holding part is connected to the sample through the pin hole and a pin. The end of the sample holding part has a clamping slot. The advantages are: simple structure, convenient operation, suitable for VL2000DX high-temperature laser confocal microscope, enabling observation, measurement, and analysis of material microstructure / phase transformation processes, crack occurrence, direction, and high-temperature mechanical properties under stress in high-temperature environments. This utility model ensures that the sample is under uniaxial tensile stress, greatly reducing the difficulty of sample installation, and does not rotate during load application, facilitating in-situ observation.

Description

Technical Field

[0001] This utility model belongs to the field of microscopy measurement and analysis, and in particular relates to a sample holder for a high-temperature laser confocal microscope. Background Technology

[0002] High-temperature laser confocal microscopy is currently the only device internationally designed for real-time laser scanning imaging, recording, and analysis of high-temperature, dynamic objects. Due to its high scanning frequency (15–120 frames / second), high observation temperature (up to 1750°C), ability to provide various atmospheric experimental conditions, and real-time online observation capabilities, it has become a highly attractive and advanced research tool internationally for researchers in fields such as metallic materials, semiconductor materials, and ceramic materials.

[0003] In addition to the above functions, a high-temperature laser confocal microscope with tensile / compression capabilities can also observe, measure, and analyze the microstructure / phase transformation process of materials under stress in high-temperature environments, as well as the occurrence and orientation of cracks and the high-temperature mechanical properties of materials.

[0004] Among them, tensile / compression process studies are mostly based on uniaxial tensile / compression experiments. Such experiments require the equipment to apply a certain load to the specimen, fix the specimen between two drive shafts to heat and deform the specimen, and at the same time require the specimen surface to be polished with a roughness Ra≤0.08μm, and the specimen observation surface to be in a horizontal state to ensure that the specimen is heated and stressed uniformly and facilitates process observation.

[0005] Therefore, when installing the specimen, it is necessary to mount both ends of the specimen on the drive shaft, adjust the specimen to ensure that the observation surface is horizontal and does not rotate during the application of load, and simultaneously control and eliminate the preload on the specimen during installation. Specimen installation is quite challenging; therefore, it is essential to develop a specimen clamp suitable for this type of experiment. Summary of the Invention

[0006] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a sample clamp for a high-temperature laser confocal microscope. This clamp can reliably hold tensile specimens, fix the tensile specimens between two drive shafts, keep the specimen observation surface horizontal, reduce the difficulty of tensile specimen installation, and improve test efficiency.

[0007] To achieve the above objectives, this utility model employs the following technical solution:

[0008] A sample holder for a high-temperature laser confocal microscope includes a drive shaft connecting part, a transition extension part, and a sample holding part connected in sequence. The drive shaft connecting part is connected to the drive shaft of the high-temperature laser confocal microscope. One end of the drive shaft is a screw structure, and the other end is fixedly connected to the transition extension part. The end of the sample holding part is provided with a pin hole, and the sample holding part is connected to the sample through the pin hole and the pin. The end of the sample holding part has a clamping slot.

[0009] The sample clamps are two of the same size.

[0010] The drive shaft connection, transition extension, and sample clamping part are an integral structure.

[0011] The drive shaft connection is connected to the drive shaft of the high-temperature laser confocal microscope via a threaded pair.

[0012] The width of the clamping gap is not greater than the thickness of the sample.

[0013] The drive shaft connection, the drive shaft of the high-temperature laser confocal microscope, and the central axis of the sample are all on the same straight line.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] A sample holder for a high-temperature laser confocal microscope features a simple structure and convenient operation. Suitable for the VL2000DX high-temperature laser confocal microscope, it enables observation, measurement, and analysis of material microstructure / phase transformation processes, crack initiation and propagation, and high-temperature mechanical properties under stress in high-temperature environments. This invention quickly ensures that the drive shaft axis, fixture axis, and sample center are aligned on the same horizontal line, achieving both centering and coaxiality. This ensures the sample is under uniaxial tensile stress, significantly reducing the difficulty of sample installation and preventing rotation during load application, facilitating in-situ observation. Attached Figure Description

[0016] Figure 1 This is the front view of this utility model.

[0017] Figure 2 This is a top view of the present invention.

[0018] Figure 3 This is a structural diagram of a pin.

[0019] Figure 4 This is a schematic diagram of the tensile specimen.

[0020] Figure 5 This is a schematic diagram of the working state of this utility model.

[0021] In the figure: 1-drive shaft connection, 2-transition extension, 3-sample clamping part, 4-thread structure, 5-clamping slot, 6-pin hole, 7-pin, 8-sample. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings. However, it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0023] See Figures 1-3 A sample holder for a high-temperature laser confocal microscope includes a drive shaft connecting part 1, a transition extension part 2, and a sample holding part 3 connected in sequence. The drive shaft connecting part 1 is connected to the drive shaft of the high-temperature laser confocal microscope. One end of the drive shaft is a screw structure, and the other end is fixedly connected to the transition extension part 2. The end of the sample holding part 3 is provided with a pin hole 6, and the sample holding part 3 is connected to the sample 8 through the pin hole 6 and a pin 7. The end of the sample holding part 3 has a clamping slot 5, the width of which is not greater than the thickness of the sample 8, so that the sample 8 can be inserted into the clamping slot 5. The drive shaft connecting part 1, the transition extension part 2, and the sample holding part 3 are an integral structure and can be machined from round steel. The central axis of the drive shaft connecting part 1, the drive shaft of the high-temperature laser confocal microscope, and the sample 8 are on the same straight line.

[0024] See Figures 1-5 Since the VL2000DX high-temperature laser confocal microscope has two drive shafts, the sample clamp and pin 7 are used in pairs. The end of the drive shaft connection part 1 has an external thread structure 4, which can be directly connected to the drive shaft of the high-temperature laser confocal microscope. The transition extension part 2 has a stepped shaft structure.

[0025] See Figures 1-5 The end of the drive shaft connection part 1 uses an M8 thread. In use, first connect the M8 threaded end of the drive shaft connection part 1 of one sample fixture to a drive shaft, tighten it, and confirm that the clamping slot 5 is horizontal. Then repeat the operation to connect the other sample fixture to another drive shaft. Adjust the distance between the two sample fixtures, ensuring that both clamping slots 5 are horizontal. Insert both ends of the tensile specimen 8 into the clamping slots 5 of the two sample fixtures. After aligning the pin holes 6 of the two sample fixtures with the pin holes of the specimen 8, insert the two pins 7 into the pin holes 6 respectively to fix the specimen 8, completing the installation. The loaded specimen 8 is in a horizontal position for easy observation and analysis.

[0026] This invention has a simple structure and is easy to operate. It can quickly make the transmission shaft, the two sample clamps, and the central axis of the sample 8 on the same straight line, that is, centering and coaxiality, ensuring that the sample 8 is in a uniaxial tensile stress state during the test. It can greatly reduce the difficulty of installing the sample 8, and does not rotate during the application of load, which is convenient for in-situ observation.

[0027] Through the above specific embodiments, those skilled in the art can easily implement this utility model. However, it should be understood that this utility model is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions. Due to space limitations and for the sake of brevity, not all of these combined solutions have been described. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sample holder for high temperature laser confocal microscopy, characterized in that, This device is applicable to the VL2000DX high-temperature laser confocal microscope and specifically includes a drive shaft connecting part, a transition extension part, and a sample clamping part connected in sequence. The drive shaft connecting part is connected to the drive shaft of the high-temperature laser confocal microscope. One end of the drive shaft is a screw structure, and the other end is fixedly connected to the transition extension part. The end of the sample clamping part is provided with a pin hole, and the sample clamping part is connected to the sample through the pin hole and pin. The end of the sample clamping part has a clamping slot. The drive shaft connecting part, the transition extension part, and the sample clamping part are an integral structure. The drive shaft connecting part, the drive shaft of the high-temperature laser confocal microscope, and the central axis of the sample are on the same straight line. The width of the clamping slot is not greater than the thickness of the sample.

2. The sample holder for high temperature laser confocal microscopy according to claim 1, wherein The sample clamps are two of the same size.

3. A sample holder for a high-temperature laser confocal microscope according to claim 1, characterized in that, The drive shaft connection is connected to the drive shaft of the high-temperature laser confocal microscope via a threaded pair.

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