Inlaying-free metallographic specimen clamping tool

Abstract

The utility model discloses an inlay-free metallographic specimen clamping tool, which comprises a tool main body, which is of a hollow structure with one end opened and the other end provided with a closed bottom wall, and the hollow part of the tool main body forms a piston cavity; the sample groove is formed in the outer side of the bottom wall of the tool body, and the sample groove is suitable for containing a metallographic sample; the adsorption through hole is formed in the bottom wall of the tool main body in the range of the sample groove, and the adsorption through hole is communicated with the piston cavity of the tool main body; the piston assembly is arranged in the piston cavity of the tool main body, and the piston assembly is configured to enable the piston cavity of the tool main body to generate negative pressure so as to adsorb the metallographic specimen on the bottom wall of the tool main body. The metallographic sample can be rapidly installed, fixed and detached in the sample groove, the metallographic sample can be evenly stressed, deformation of the metallographic sample is avoided, the metallographic sample grinding and polishing device has the advantages of being simple in structure, easy and convenient to operate, low in cost and convenient and fast to install, and the grinding and polishing quality and efficiency of the metallographic sample can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallographic sample grinding and polishing fixtures, in particular to a clamping fixture used for grinding and polishing preparation and processing of inlay-free metallographic samples. Background Art

[0002] Metallographic analysis is an important method for testing and researching metallic materials. Before conducting metallographic analysis, metallographic specimens generally need to be prepared and processed through grinding and polishing. Thin-walled or difficult-to-hold metallographic specimens are often prepared into regular shapes through cold or hot mounting to facilitate subsequent grinding and polishing. Grinding and polishing these metallographic specimens without prior mounting can easily cause hand injuries. However, grinding and polishing after mounting can make it difficult to retrieve the specimen or result in severe surface deformation. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a fixture for clamping metallographic specimens without inlays, which is designed to quickly clamp, fix, and remove metallographic specimens without inlays.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a fixture for clamping metallographic specimens without inlay, comprising: a fixture body, which is a hollow structure with an open end and a closed bottom wall at the other end, the hollow portion of the fixture body forming a piston cavity; a sample groove, which is formed on the outer side of the bottom wall of the fixture body, and the sample groove is suitable for accommodating a metallographic specimen; an adsorption through-hole, which is opened on the bottom wall of the fixture body within the range of the sample groove, and the adsorption through-hole is connected to the piston cavity of the fixture body; a piston assembly, which is arranged in the piston cavity of the fixture body, and the piston assembly is configured to generate a negative pressure in the piston cavity of the fixture body to adsorb the metallographic specimen on the bottom wall of the fixture body.

[0005] Preferably, the piston assembly includes: a piston base, which cooperates with the piston cavity of the tooling body, and the piston base can enter the piston cavity of the tooling body through the open end of the tooling body, and can move up and down along the piston cavity of the tooling body; a piston pull rod, one end of the piston pull rod is fastened to the piston base; and a piston pull head, which is fastened to the other end of the piston pull rod.

[0006] Preferably, a fixing through hole is provided on the side wall of the tool body, and a retractable fixing bolt is provided on the side wall of the piston base, and the retractable fixing bolt can enter the fixing through hole to fix the piston base in the piston cavity of the tool body.

[0007] Preferably, the retractable fixing bolt includes a fixing bolt and a spring, a fixing bolt receiving groove is provided on the side wall of the piston base, the spring is arranged in the fixing bolt receiving groove, and the outer end of the spring is fastened to the fixing bolt.

[0008] Preferably, the number of the fixing through holes is two and they are symmetrically arranged along the center of the tool body, and the number of the retractable fixing bolts is two and they are symmetrically arranged along the center of the piston base.

[0009] Preferably, there are multiple adsorption through holes.

[0010] Preferably, the plurality of adsorption through holes are evenly arranged in the circumferential direction along concentric rings with different diameters.

[0011] Preferably, the tool body and the piston cavity are both cylindrical, and the piston base is also cylindrical to match the shape of the piston cavity.

[0012] The utility model has the following advantages due to the adoption of the above technical solution:

[0013] The utility model uses negative pressure to adsorb the metallographic sample on the bottom wall of the tooling body, which can quickly realize the installation, fixation and disassembly of the metallographic sample in the sample slot, and can make the metallographic sample evenly stressed to avoid deformation of the metallographic sample. It has the advantages of simple structure, easy operation, low cost and convenient installation, and can greatly improve the grinding and polishing quality and efficiency of the metallographic sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to denote the same components. In the accompanying drawings:

[0015] Figure 1 A schematic structural diagram of a fixture for holding a non-mounting metallographic specimen provided by an embodiment of the present invention;

[0016] Figure 2 A schematic structural diagram of a tooling body provided in one embodiment of the present utility model;

[0017] Figure 3 This is a structural schematic diagram of a piston assembly provided in one embodiment of the present utility model.

[0018] The reference numerals in the figures are as follows:

[0019] 1- tooling body; 2- sample groove; 3- adsorption through hole; 4- piston assembly; 5- piston base; 6- piston pull rod; 7- piston pull head; 8- fixing through hole; 9- internal and external retractable fixing bolts. DETAILED DESCRIPTION

[0020] To further clarify the objectives, technical solutions, and advantages of the present invention, the following describes specific embodiments of the present invention in conjunction with the accompanying drawings. Although the accompanying drawings illustrate exemplary embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0026] The utility model provides a fixture for clamping metallographic specimens without inlay, comprising: a fixture body, which is a hollow structure with an open end and a closed bottom wall at the other end, the hollow portion of the fixture body forming a piston cavity; a sample groove formed on the outside of the bottom wall of the fixture body, the sample groove being suitable for accommodating the metallographic specimen; an adsorption through-hole, which is provided on the bottom wall of the fixture body within the range of the sample groove, and the adsorption through-hole is connected to the piston cavity of the fixture body; a piston assembly, which is provided in the piston cavity of the fixture body, and the piston assembly is configured to generate a negative pressure in the piston cavity of the fixture body to adsorb the metallographic specimen on the bottom wall of the fixture body. The utility model can quickly realize the installation, fixation and removal of the metallographic specimen in the specimen slot, and can make the metallographic specimen evenly stressed, thus avoiding deformation of the metallographic specimen. It has the advantages of simple structure, easy operation, low cost and convenient installation, and can greatly improve the grinding and polishing quality and efficiency of the metallographic specimen.

[0027] The following is a detailed description of the inlay-free metallographic specimen clamping tool provided by the embodiment of the present invention in conjunction with the accompanying drawings.

[0028] Example 1

[0029] See also Figure 1The present embodiment provides a fixture for clamping metallographic specimens without inlay, comprising: a fixture body 1, which is a hollow structure with an open end and a closed bottom wall at the other end, wherein the hollow portion of the fixture body 1 forms a piston cavity; a sample groove 2, which is formed on the outer side of the bottom wall of the fixture body 1 and is suitable for accommodating a metallographic specimen; an adsorption through-hole 3, which is provided on the bottom wall of the fixture body 1 within the range of the sample groove 2 and is connected to the piston cavity of the fixture body 1; and a piston assembly 4, which is disposed in the piston cavity of the fixture body 1 and is configured to generate a negative pressure in the piston cavity of the fixture body 1 so as to adsorb the metallographic specimen on the bottom wall of the fixture body 1.

[0030] In the above embodiment, preferably, please refer to Figure 3 The piston assembly 4 includes a piston base 5, which cooperates with the piston cavity of the tool body 1. The piston base 5 can enter the piston cavity of the tool body 1 through the open end of the tool body 1 and can move up and down along the piston cavity of the tool body 1; a piston pull rod 6, one end of which is tightly connected to the piston base 5; and a piston pull head 7, which is tightly connected to the other end of the piston pull rod 6. Through the above arrangement, when the piston pull head 7 is pulled up or down, the piston base 5 can be driven by the piston pull rod 6 to move up and down in the piston cavity of the tool body 1.

[0031] In the above embodiment, preferably, please refer to Figure 2 、 Figure 3 A fixing through hole 8 is opened on the side wall of the tooling body 1, and a retractable fixing bolt 9 is provided on the side wall of the piston base 5. The retractable fixing bolt 9 can enter the fixing through hole 8 to fix the piston base 5 in the piston cavity of the tooling body 1.

[0032] In the above embodiment, the retractable fixing bolt 9 preferably comprises a fixing bolt and a spring. A fixing bolt receiving groove is defined on the sidewall of the piston base 5, and the spring is disposed within the fixing bolt receiving groove, with the outer end of the spring securely connected to the fixing bolt. With this arrangement, when unstressed, the fixing bolt extends outside the fixing bolt receiving groove. However, when the fixing bolt is squeezed inward, the fixing bolt is compressed into the fixing bolt receiving groove. In other embodiments, the retractable fixing bolt 9 may also be configured as another retractable elastic component, such as a resilient rubber cylinder.

[0033] In the above embodiment, preferably, the fixing through holes 8 are arranged symmetrically along the center of the tool body 1, and the retractable fixing bolts 9 are arranged symmetrically along the center of the piston base 5 (see Figure 3 With the above arrangement, when the two retractable fixing bolts 9 respectively enter the corresponding fixing through holes 8 , the piston base 5 can be stably fixed in the piston cavity of the tool body 1 .

[0034] In the above embodiment, preferably, please refer to Figure 2 There are multiple adsorption holes 3, and the multiple adsorption holes 3 are evenly arranged in the circumferential direction along concentric rings of varying diameters. Through this arrangement, the evenly distributed multiple adsorption holes 3 can provide a uniform adsorption force to the metallographic specimen, thereby allowing the metallographic specimen to be evenly adsorbed on the bottom wall of the tooling body 1, thereby preventing deformation of the metallographic specimen.

[0035] In the above embodiment, preferably, the tool body 1 and the piston cavity are both cylindrical, and the piston base 5 is also cylindrical to match the shape of the piston cavity.

[0036] Example 2

[0037] This embodiment provides a method for using the clamping tool for the non-mounting metallographic specimen in Example 1. The method for using the clamping tool is as follows:

[0038] First, place the piston base 5 of the piston assembly 4 into the piston cavity of the tool body 1 and push the piston pull head 7 so that the piston base 5 contacts the bottom wall of the tool body 1;

[0039] Then, place the metallographic sample in the sample groove 2 and ensure that the adsorption through-hole 3 is completely covered by the metallographic sample;

[0040] Finally, the piston pull head 7 is pulled upward to move the piston base 5 upward, thereby generating negative pressure in the piston chamber of the tool body 1. The metallographic sample is adsorbed on the bottom wall of the tool body 1 through the adsorption through-hole. When the retractable fixing pin 9 on the piston base 5 reaches the fixing through-hole 8, the retractable fixing pin 9 automatically pops out and enters the fixing through-hole 8, thereby achieving fixed clamping of the metallographic sample.

[0041] After the grinding and polishing is completed, the retractable fixing bolt 9 is squeezed inward and the piston pull head 7 is pushed downward to realize the disassembly and observation of the metallographic sample.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fixture for holding metallographic specimens without inlay, characterized in that: include: The tool body is a hollow structure with an open end and a closed bottom wall at the other end, and the hollow portion of the tool body forms a piston cavity; A sample groove is formed on the outer side of the bottom wall of the tool body, and the sample groove is suitable for accommodating a metallographic sample; an adsorption through hole, which is formed on the bottom wall of the tool body within the range of the sample groove, and the adsorption through hole is connected to the piston cavity of the tool body; The piston assembly is arranged in the piston cavity of the tool body, and the piston assembly is configured to generate negative pressure in the piston cavity of the tool body so as to adsorb the metallographic sample on the bottom wall of the tool body.

2. The fixture for holding non-mounting metallographic specimens according to claim 1, characterized in that: The piston assembly comprises: a piston base, cooperating with the piston cavity of the tool body, wherein the piston base can enter the piston cavity of the tool body through the open end of the tool body and can move up and down along the piston cavity of the tool body; A piston pull rod, one end of which is firmly connected to the piston base; The piston pull head is fastened to the other end of the piston pull rod.

3. The fixture for holding non-mounting metallographic specimens according to claim 2, characterized in that: A fixing through hole is opened on the side wall of the tool body, and a retractable fixing bolt is provided on the side wall of the piston base. The retractable fixing bolt can enter the fixing through hole to fix the piston base in the piston cavity of the tool body.

4. The fixture for holding non-mounting metallographic specimens according to claim 3, characterized in that: The retractable fixing bolt includes a fixing bolt and a spring. A fixing bolt receiving groove is provided on the side wall of the piston base. The spring is arranged in the fixing bolt receiving groove, and the outer end of the spring is fastened to the fixing bolt.

5. The fixture for holding non-mounting metallographic specimens according to claim 3, characterized in that: The number of the fixing through holes is symmetrically arranged along the center of the tool body, and the number of the retractable fixing bolts is symmetrically arranged along the center of the piston base.

6. The fixture for holding a non-mounting metallographic specimen according to any one of claims 1 to 5, characterized in that: There are multiple adsorption through holes.

7. The fixture for holding non-mounting metallographic specimens according to claim 6, characterized in that: The plurality of adsorption through holes are evenly arranged in the circumferential direction along concentric rings with different diameters.

8. The fixture for holding a non-mounting metallographic specimen according to any one of claims 2 to 5, characterized in that: The tool body and the piston cavity are both cylindrical, and the piston base is also cylindrical to match the shape of the piston cavity.

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