CN215339162U

CN215339162U - Sample fixing device

Info

Publication number: CN215339162U
Application number: CN202121556741.XU
Authority: CN
Inventors: 彭甜甜; 许海峰; 闫晨; 张辰辰; 陈爱华
Original assignee: Jiangdong Alloy Technology Co ltd; Jiangsu Zhongtian Technology Co Ltd
Current assignee: Jiangdong Alloy Technology Co ltd; Jiangsu Zhongtian Technology Co Ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-12-28
Anticipated expiration: 2031-07-08

Abstract

The utility model relates to the technical field of sample preparation tools, in particular to a sample fixing device, which comprises: the fixing structure is provided with an accommodating cavity, a sample space is arranged in the accommodating cavity, and the accommodating cavity is provided with an opening allowing a part to be processed of the sample to be exposed and a first guide part; the movable structure is arranged in the accommodating cavity and provided with a second guide part matched with the first guide part, and the movable structure reciprocates along the first guide part under the action of external force so as to move towards or away from the sample space and clamp or release a sample to be processed. The sample fixing device provided by the utility model has the advantages of accurate and stable sample clamping, good observation effect and high grinding and polishing efficiency.

Description

Sample fixing device

Technical Field

The utility model relates to the technical field of sample preparation tools, in particular to a sample fixing device.

Background

At present, with the rapid development of metal manufacturing industry, metallographic analysis of metal samples has become an indispensable detection item. Metallographic analysis generally refers to an analysis method in which a sample is ground and polished, and then a microscopic structure of the sample is observed and analyzed using a microscope, thereby obtaining a relationship between the structure and the properties. However, since the shape and size of the sample are different from each other, either regular or irregular or large or small, there are few methods for grinding and polishing samples of different shapes and sizes and reliably fixing and observing the samples. The method used at present is to inlay the sample by using a metallographic phase embedding machine, but embedding a sample usually takes a long time, and meanwhile, the embedded sample still needs to be ground and polished, and the sample is usually taken out after metallographic phase analysis so as to carry out the next detection work, thereby greatly reducing the detection efficiency.

Therefore, the prior art discloses a metallographic structure analysis polishing clamp device, a spring provides positive pressure stably and elastically, so that the stress of a polishing test is uniform, the polishing surface is balanced, and the polishing quality is high. Another prior art has then disclosed a multi-functional fixture for metallographic test preparation, including fixture body and puller bolt, the up end of fixture body is provided with the centre gripping recess that is used for placing the sample, still including the clamp plate that can arrange in between sample and the puller bolt, centre gripping recess inner wall has first clamping station and second clamping station, first clamping station is vertical plane, second clamping station is vertical cambered surface, the puller bolt can be screwed into the screw hole and pass through the clamp plate puller sample, but because the puller bolt directly passes behind the screw hole and connect clamp plate and puller sample, and the length of puller bolt is longer, the sample volume is then less, the sample can not be pushed down completely to the clamp plate in the puller process probably appears, the skew condition appears promptly, and then influence subsequent observation effect and polishing efficiency.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that the defects that the sample is not completely pressed and the subsequent grinding and polishing efficiency is influenced possibly in the process of pressing the sample by using a metallographic test preparation clamp in the prior art are overcome, so that the sample fixing device is accurate and stable in sample clamping, good in observation effect and high in grinding and polishing efficiency.

In order to solve the above technical problem, the present invention provides a sample fixing device, comprising:

the fixing structure is provided with an accommodating cavity, a sample space is arranged in the accommodating cavity, and the accommodating cavity is provided with an opening allowing a part to be processed of the sample to be exposed and a first guide part;

the movable structure is arranged in the accommodating cavity and provided with a second guide part matched with the first guide part, and the movable structure reciprocates along the first guide part under the action of external force so as to move towards or away from the sample space and clamp or release a sample to be processed.

Optionally, the first guiding portion is a sliding groove or a sliding block arranged on the side wall of the accommodating cavity, and correspondingly, the second guiding portion is a sliding block or a sliding groove arranged on the side wall of the movable structure.

Optionally, the first guide portion and the second guide portion are both a pair of opposite and symmetrical portions.

Optionally, the inner wall of the movable structure and/or the fixed structure facing the sample space is curved.

Optionally, the inner walls of the movable structure and the fixed structure facing the sample space are both arc-shaped.

Optionally, the distance between the curved inner walls of the movable structure and the fixed structure is 4 mm.

Optionally, the device further comprises a force application structure connected with the movable structure and penetrating through the fixed structure.

Optionally, the force application structure includes a pull rod with one end fixedly connected to the movable structure and the other end penetrating through the fixed structure, and an elastic member sleeved on the pull rod, one end of the elastic member is fixedly connected to the movable structure and the other end is fixedly connected to the holding cavity of the fixed structure far away from the inner wall of the sample space.

Optionally, the pull rod is a threaded rod, and the movable structure is provided with a threaded hole allowing the pull rod to be screwed into the fixed structure.

Optionally, one end of the threaded rod, which is far away from the movable structure, is provided with a gripping part, and the gripping part extends to the outer side of the fixed structure.

The technical scheme of the utility model has the following advantages:

1. according to the sample fixing device provided by the utility model, when a sample needs to be clamped and fixed, the movable structure only needs to move towards the sample space of the fixed structure until the sample is completely fixed. Because the movable structure follows fixed knot under the effect of second guide part and constructs the first guide part according to predetermined orbital motion at the motion in-process, consequently accurate clamping-force can be exerted to the sample to the movable structure, the skew condition of application of force can not appear, can directly observe, and observation effect is better, and can obtain smooth grinding polishing surface relatively easily, is showing and has improved grinding polishing quality and efficiency.

2. According to the sample fixing device provided by the utility model, the movable structure and the fixed structure are arranged towards the arc-shaped inner wall of the sample space, so that the fixing device can clamp and fix various samples in irregular shapes, and the sample fixing device has the advantages of higher flexibility and better universality.

3. According to the sample fixing device provided by the utility model, the elastic piece on the pull rod can enable the movable structure to automatically move towards the direction of clamping the sample under the elastic action, the operation is simple, the sample preparation time is greatly saved, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a sample holding device provided in the present invention;

FIG. 2 is a front view of a sample holding device according to the present invention;

FIG. 3 is a schematic view of the mobile structure of FIG. 1;

FIG. 4 is a schematic view of the drawbar of FIG. 1;

FIG. 5 is a schematic view of a sample holding device according to the present invention in use.

Description of reference numerals:

1. a fixed structure; 2. a movable structure; 3. an accommodating chamber; 4. a sample space; 5. a sample; 6. an opening; 7. a first guide portion; 8. a second guide portion; 9. a pull rod; 10. an elastic member; 11. a threaded hole; 12. a grip portion.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

One embodiment of the sample holding apparatus shown in fig. 1 to 4, which can be used for observation and grinding and polishing of metallographic phases, includes a fixed structure 1 having a receiving cavity and a movable structure 2 slidably coupled to the fixed structure 1.

The fixing structure 1 is a cuboid fixing block, the middle part of the fixing structure is hollowed to form a containing cavity 3, a sample space 4 is arranged in the containing cavity 3, and the containing cavity 3 is provided with an opening 6 and a first guide part 7 which allow a part to be processed of a sample 5 to be exposed outside. The opening 6 is formed on the side wall of the fixed structure 1 and is arranged towards a microscope or a grinding and polishing machine when in use, and when the sample 5 is placed in the sample space 4, the part to be processed is flush with the opening or slightly extends out of the opening, so that the microscope can directly observe or the grinding and polishing machine can directly carry out grinding and polishing operation conveniently; the first guide part 7 is a sliding groove arranged on the side wall of the accommodating cavity 3, and the sliding grooves are a pair of opposite and symmetrical grooves.

The movable structure 2 is arranged in the accommodating cavity 3, and is a movable block similar to a square, and the movable structure is provided with a second guide part 8 matched with the first guide part 7, the second guide part 8 is arranged on the side wall of the movable structure 2, the slide block extends to the other end from one end along the side wall of the movable block, and the slide block is a pair of opposite and symmetrical arrangement. The movable structure 2 is reciprocated along the first guide portion 7 by an external force to move toward or away from the sample space 4, and holds or releases the sample 5 to be processed.

In order to ensure that the fixing device can clamp and fix various irregular samples, the inner walls of the movable structure 2 and the fixed structure 1 facing the sample space 4 are arc-shaped, so that when the irregular samples 5 are placed in the sample space 4, at least one part of the inner walls of the movable structure 2 and the fixed structure 1 are contacted with the arc-shaped inner walls, and are fixed in place; and the distance between the arc-shaped inner walls of the movable structure 2 and the fixed structure 1 is 4mm so as to fix samples with different shapes which are larger than 4 mm. As shown in FIG. 5, a copper rod with a diameter of 8mm is placed in the sample space 4 between the arc-shaped inner walls of the movable structure 2 and the fixed structure 1, and the copper rod can be firmly clamped and fixed due to the arrangement of the arc-shaped inner walls. Of course, a plurality of samples may be placed in the sample space at the same time to improve observation efficiency.

In order to facilitate the clamping operation, a force application structure is further arranged at one end of the movable structure 2 far away from the sample space 4. Specifically, the force application structure comprises a pull rod 9, one end of which is fixedly connected with the movable structure 2, and the other end of which penetrates through the fixed structure 1, and an elastic part 10 which is sleeved on the pull rod 9, wherein the elastic part 10 is a spring. The corresponding position of fixed knot structure 1 is equipped with the through-hole that allows pull rod 9 to run through, the one end of elastic component 10 with the moving structure 2 rigid coupling, the other end rigid coupling is in fixed knot structure 1 holds chamber 3 and keeps away from on the inner wall of sample space 4. As shown in fig. 3 and 4, the pull rod 9 is a threaded rod, and the movable structure 2 is provided with a threaded hole 11 for allowing the pull rod 9 to be screwed into a fixed position. One end of the threaded rod, which is far away from the movable structure 2, is provided with a circular grasping part 12, and the grasping part 12 extends to the outer side of the fixed structure 1.

As shown in fig. 5, when the copper rod needs to be ground, polished or observed, the gripping part 12 of the threaded rod is only needed to be grasped to stretch the threaded rod outwards, at the moment, the spring is compressed to store energy, and the movable block slides outwards along the sliding groove on the inner wall of the fixed block under the action of external force. Then the copper rod is placed in the sample space 4 between the movable block and the fixed block, so that the part to be processed faces the grinding and polishing machine, and the position of the part to be processed is adjusted. The grip 12 is released again, and the movable block is moved towards the sample space 4 under the action of the spring until the copper rod is clamped for grinding, polishing or observation.

As an alternative embodiment, the first guide portion 7 is a slider provided on a side wall of the accommodating chamber 3, and correspondingly, the second guide portion 8 is a sliding slot provided on a side wall of the movable structure 2.

As an alternative embodiment, the inner wall of either the movable structure 2 or the fixed structure 1 facing the sample space 4 is curved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A sample holding device, comprising:

a fixing structure (1) which is provided with a containing cavity (3), wherein a sample space (4) is arranged in the containing cavity (3), and the containing cavity (3) is provided with an opening (6) allowing a part to be processed of a sample (5) to be exposed and a first guide part (7);

the movable structure (2) is arranged in the accommodating cavity (3) and is provided with a second guide part (8) matched with the first guide part (7), and the movable structure (2) reciprocates along the first guide part (7) under the action of external force to move towards or away from the sample space (4) and clamp or release a sample (5) to be processed.

2. The sample fixation device according to claim 1, wherein the first guide portion (7) is a slide or a slide block provided on a side wall of the accommodation chamber (3), and correspondingly, the second guide portion (8) is a slide or a slide block provided on a side wall of the movable structure (2).

3. The sample holding device according to claim 2, wherein the first guide portion (7) and the second guide portion (8) are each a pair disposed oppositely and symmetrically.

4. A sample fixation device according to any of claims 1-3, wherein the inner wall of the movable structure (2) and/or the fixed structure (1) facing the sample space (4) is curved.

5. A sample fixation device according to claim 4, wherein the inner walls of the movable structure (2) and the fixed structure (1) facing the sample space (4) are both arc-shaped.

6. A sample fixation device according to claim 5, wherein the distance between the movable structure (2) and the curved inner wall of the fixed structure (1) is 4 mm.

7. A sample fixation device according to any of claims 1-3, further comprising a force exerting structure connected to the movable structure (2) and arranged through the fixed structure (1).

8. The sample fixing device according to claim 7, wherein the force applying structure comprises a pull rod (9) having one end fixedly connected to the movable structure (2) and the other end penetrating through the fixed structure (1), and an elastic member (10) sleeved on the pull rod (9), wherein one end of the elastic member (10) is fixedly connected to the movable structure (2) and the other end is fixedly connected to the inner wall of the accommodating cavity (3) of the fixed structure (1) away from the sample space (4).

9. The sample holding device according to claim 8, wherein the pull rod (9) is a threaded rod and the movable structure (2) is provided with a threaded hole (11) allowing the pull rod (9) to be screwed into a stationary position.

10. The sample fixation device according to claim 9, wherein the end of the threaded rod remote from the movable structure (2) is provided with a grip portion (12), the grip portion (12) extending outside the fixed structure (1).