Metallographic specimen clamping device and grinding equipment

Abstract

The utility model discloses a metallographic specimen clamping device and grinding equipment, and belongs to the field of metallographic experiment devices. The clamping device for the metallographic specimen comprises a fixed base, a limiting frame and at least one locking structure. Wherein the limiting frame is detachably connected with the fixed base, the limiting frame is provided with a strip-shaped hollowed-out groove, the locking structure is movably connected with the limiting frame, a containing space is defined by one end of the locking structure and the groove wall of the strip-shaped hollowed-out groove, and a plurality of metallographic samples can be contained and fixed at the same time. Due to the fact that the multiple metallographic samples are fixed in the limiting frame through the locking structures, when the metallographic samples need to be turned over and ground, the whole limiting frame clamping the multiple metallographic samples can be directly turned over, secondary clamping of the metallographic samples is not needed, batch grinding and turning over of the metallographic samples can be achieved, and the grinding efficiency of the metallographic samples is improved. And the grinding efficiency of the metallographic specimen is improved.

Description

Technical Field

[0001] This utility model relates to the field of metallographic experimental apparatus, and in particular to a metallographic sample clamping device and grinding equipment. Background Technology

[0002] With the development of metallic materials technology, the requirements for the processing quality of metallic materials are becoming increasingly stringent. Currently, to better understand the nature of materials and provide a scientific basis for their design, manufacturing, and application, metallographic observation and analysis are commonly used to observe and study the microstructure of metallic materials. Before observing the metallographic sample, it is usually ground and polished using metallographic sample grinding equipment to remove cutting marks, scratches, and stress layers from the sample surface, obtaining a flat, smooth, and undamaged surface. This allows for clear observation of the microstructure under a microscope, enabling the analysis of the material's composition, properties, defects, and processing effects, ensuring the accuracy of the observation and analysis results.

[0003] Currently, when grinding metallographic specimens, the specimens are clamped in a holding device, which then secures them, ensuring stability during cutting, grinding, and polishing processes. However, using current metallographic specimen clamping devices to grind both sides of a specimen requires disassembling and re-clamping each specimen to flip it over, resulting in low grinding efficiency. Utility Model Content

[0004] This utility model provides a clamping device and grinding equipment for metallographic specimens. It solves the problem of low grinding efficiency for metallographic specimens in the prior art. The technical solution is as follows:

[0005] According to one aspect of the present invention, a metallographic specimen clamping device is provided, the metallographic specimen clamping device comprising:

[0006] A fixed base, a limiting frame, and at least one locking structure;

[0007] The limiting frame is located on the fixed base and is detachably connected to the fixed base. The limiting frame has at least one strip-shaped hollow groove.

[0008] The locking structure is movably connected to the limiting frame. One end of the locking structure is located in the strip-shaped hollow groove of the limiting frame and forms an accommodating space with the groove wall of the strip-shaped hollow groove.

[0009] The accommodating space is used to accommodate multiple metallographic samples, and the locking structure can move along the length of the strip-shaped hollow groove and press the multiple metallographic samples against the groove wall of the strip-shaped hollow groove.

[0010] Optionally, the locking structure includes a slider part and a locking part, and the limiting frame also has at least one connecting through hole, which communicates with the strip-shaped hollow groove;

[0011] The slider is movably installed in the strip-shaped hollow groove, and together with the groove wall of the strip-shaped hollow groove, forms the receiving space;

[0012] One end of the locking part extends into the strip-shaped hollow groove through the connecting through hole and abuts against the side of the slider part away from the receiving space. The locking part is configured to drive the slider part to move along the length direction of the strip-shaped hollow groove, and to fix the slider part when the slider part presses the plurality of metallographic samples against the groove wall of the strip-shaped hollow groove.

[0013] Optionally, the limiting frame includes a frame structure and at least one guide member;

[0014] The frame structure is used to form the strip-shaped hollow groove, and the connecting through hole is located in the frame structure;

[0015] The guide component includes two guide strips arranged opposite to each other. The extension direction of the guide strips is the same as the length direction of the strip-shaped hollow groove, and the guide strips are fixedly connected to the groove wall of the strip-shaped hollow groove.

[0016] In the width direction of the strip-shaped hollow groove, both ends of the slider part have guide grooves, and the two guide grooves are respectively connected to the two guide strips.

[0017] Optionally, the strip-shaped hollow groove has a first groove wall and a second groove wall arranged opposite to each other along the width direction of the strip-shaped hollow groove. Both the first groove wall and the second groove wall have a first groove, and the two guide bars are respectively fixed in the two first grooves.

[0018] In the width direction of the strip-shaped hollow groove, the height of the guide strip is equal to the depth of the first groove;

[0019] Along the length of the strip-shaped hollow groove, there is an installation gap between the end of the guide bar near the connecting through hole and the groove wall of the first groove, and the length of the installation gap is greater than the thickness of the slider portion.

[0020] Optionally, the connecting through hole includes a threaded through hole, the locking part includes a locking bolt, the locking bolt extends into the strip-shaped hollow groove through the threaded through hole, and the end of the locking bolt abuts against the slider part.

[0021] Optionally, the locking part further includes a fixing nut, which is located on the side of the threaded through hole away from the slider part, and the fixing nut is sleeved on the locking bolt.

[0022] Optionally, the fixed base has a second groove, and the limiting frame is located in the second groove;

[0023] In a direction perpendicular to the bottom of the second groove, the height of the limiting frame is greater than the depth of the second groove.

[0024] Optionally, both ends of the limiting frame have clearance notches along the length of the strip-shaped hollow groove;

[0025] At least a portion of the locking part is located in the clearance notch.

[0026] Optionally, the at least one strip-shaped hollow groove includes multiple strip-shaped hollow grooves, and the at least one locking structure includes multiple locking structures;

[0027] The plurality of strip-shaped hollowed-out grooves are arranged along the width direction of the strip-shaped hollowed-out grooves;

[0028] The plurality of locking structures correspond one-to-one with the plurality of strip-shaped hollow slots, and one end of the locking structure is located in the corresponding strip-shaped hollow slot.

[0029] According to another aspect of the present invention, a metallographic sample grinding device is provided, the metallographic sample grinding device comprising: a grinding table, a grinding wheel assembly and a metallographic sample clamping device, the metallographic sample clamping device comprising the aforementioned metallographic sample clamping device.

[0030] The metallographic specimen clamping device is located on the grinding machine worktable, and the fixed base in the metallographic specimen clamping device is magnetically connected to the grinding machine worktable.

[0031] The grinding wheel assembly is located on the side of the limiting frame in the clamping device of the metallographic specimen, away from the fixed base.

[0032] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0033] A clamping device for metallographic specimens is provided, comprising a fixed base, a limiting frame, and at least one locking structure. The limiting frame is detachably connected to the fixed base and has a strip-shaped perforated groove. The locking structure is movably connected to the limiting frame, with one end of the locking structure forming a receiving space with the groove wall, capable of simultaneously accommodating and fixing multiple metallographic specimens. Since multiple metallographic specimens are fixed in the limiting frame by the locking structure, when it is necessary to flip the metallographic specimens for grinding, the entire limiting frame holding multiple specimens can be flipped directly without secondary clamping of the specimens. This enables batch grinding and flipping of metallographic specimens, improving grinding efficiency. It solves the problem of low grinding efficiency of metallographic specimens in related technologies. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a metallographic sample clamping device provided in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of a metallographic sample clamping device and a metallographic sample according to an embodiment of the present invention.

[0037] Figure 3 yes Figure 2 The diagram shows the clamping device for the metallographic specimen and an exploded structure of the metallographic specimen.

[0038] Figure 4 This is a schematic diagram of the adjustment of a metallographic sample clamping device provided in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of a limiting frame provided in an embodiment of the present utility model;

[0040] Figure 6 This is a schematic diagram of a locking structure provided by this utility model;

[0041] Figure 7 yes Figure 2 The diagram shows the clamping device for the metallographic specimen and another structural schematic of the metallographic specimen from another perspective.

[0042] Figure 8 yes Figure 7The diagram shows a clamping device for the metallographic specimen and a cross-sectional structure of the metallographic specimen along position A1-A2.

[0043] Figure 9 This is a schematic diagram of the structure of a slider part provided in an embodiment of the present utility model;

[0044] Figure 10 yes Figure 7 The diagram shows the clamping device for the metallographic specimen and the cross-sectional structure of the metallographic specimen along the B1-B2 position.

[0045] Figure 11 This is a schematic diagram of the structure of a fixed base provided in an embodiment of this utility model;

[0046] Figure 12 yes Figure 7 The diagram shows a clamping device for the metallographic specimen and another cross-sectional structure of the metallographic specimen along position A1-A2.

[0047] Figure 13 This is a schematic diagram of the structure of a metallographic sample grinding device provided in an embodiment of this utility model. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0049] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0050] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0051] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0052] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a metallographic sample clamping device 10 provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a metallographic sample clamping device 10 and a metallographic sample 20 provided in an embodiment of this utility model. Figure 3 yes Figure 2 The diagram shows an exploded view of the metallographic specimen clamping device 10 and the metallographic specimen 20. The metallographic specimen clamping device 10 may include: a fixed base 11, a limiting frame 12 and at least one locking structure 13.

[0053] The limiting frame 12 can be located on the fixed base 11, and the limiting frame 12 and the fixed base 11 are detachably connected. Detachable connection means that the limiting frame 12 and the fixed base 11 can be separated by simple operation (such as disassembly, loosening or separation). By detachably connecting the limiting frame 12 and the fixed base 11, the limiting frame 12 and the fixed base 11 can be repeatedly disassembled and assembled, and damage to the limiting frame 12 and the fixed base 11 can be avoided during the disassembly and assembly process.

[0054] The limiting frame 12 may have at least one strip-shaped hollow groove c1. The limiting frame 12 may have one or more strip-shaped hollow grooves c1. The strip-shaped hollow groove c1 may also be called a strip-shaped through hole. The strip-shaped hollow groove c1 may have a first opening and a second opening. The first opening and the second opening may be arranged along the depth direction D3 of the strip-shaped hollow groove.

[0055] The locking structure 13 can be movably connected to the limiting frame 12. One end of the locking structure 13 is located in the strip-shaped hollow groove c1 of the limiting frame 12, and together with the groove wall of the strip-shaped hollow groove c1, they form a receiving space R1. The receiving space R1 can be used to accommodate multiple metallographic samples 20. The locking structure 13 can move along the length direction D1 of the strip-shaped hollow groove and can press the multiple metallographic samples 20 against the groove wall of the strip-shaped hollow groove c1.

[0056] For example, please refer to Figure 4 , Figure 4This is a schematic diagram of the adjustment of a metallographic sample clamping device 10 provided in an embodiment of the present invention. The strip-shaped hollow groove c1 may have opposing first groove walls c11 and second groove walls c12, as well as opposing third groove walls c13 and fourth groove walls c14. The first groove walls c11 and second groove walls c12 are arranged opposite each other along the width direction D2 of the strip-shaped hollow groove, and the third groove walls c13 and fourth groove walls c14 are arranged opposite each other along the length direction D1 of the strip-shaped hollow groove. One end of the locking structure 13 may be arranged opposite to the third groove wall c13. One end of the locking structure 13 may form a receiving space R1 with a portion of the first groove wall c11, a portion of the second groove wall c12, and the third groove wall c13. The receiving space R1 may also be strip-shaped. Multiple metallographic samples 20 located in the receiving space R1 may be arranged along the length direction D1 of the strip-shaped hollow groove.

[0057] When the locking structure 13 moves along the length direction D1 of the strip-shaped hollow groove, the size of the accommodating space R1 will also change with the movement of the locking structure 13; for example Figure 4 As shown, when the locking structure 13 moves away from the third groove wall c13, the distance between one end of the locking structure 13 and the third groove wall c13 increases, and the accommodating space R1 also increases accordingly; when the locking structure 13 moves towards the third groove wall c13, the distance between one end of the locking structure 13 and the third groove wall c13 decreases, and the accommodating space R1 also decreases accordingly. In this way, the size of the accommodating space R1 can be adjusted according to the number of metallographic samples 20 to be ground, so that the accommodating space R1 can accommodate different numbers of metallographic samples 20. For example, 2, 3, 5, 6, 8 or more metallographic samples 20 can be placed in the accommodating space R1. This embodiment of the present invention does not limit this.

[0058] Furthermore, after the operator or clamping tool loads multiple metallographic specimens 20 into the receiving space R1, the locking structure 13 applies a pressing force towards the third groove wall c13 to press the multiple metallographic specimens 20 against the third groove wall c13. Thus, through the cooperation of the locking structure 13 and the limiting frame 12, the multiple metallographic specimens 20 are clamped in the receiving space R1. Since the strip-shaped hollow groove c1 has a first opening and a second opening, the two end faces (such as the upper end face and the lower end face) of the multiple metallographic specimens 20 can be exposed from the first opening and the second opening respectively, so that the grinding tool can grind the two end faces of the metallographic specimens 20 respectively.

[0059] For example, the metallographic sample clamping device 10 in this embodiment of the present invention can be applied in a metallographic sample grinding equipment, which may further include a grinding table and a grinding wheel assembly. The process of clamping the metallographic sample 20 using the metallographic sample clamping device 10 in this embodiment of the present invention and grinding the metallographic sample 20 may include the following steps: (1) fixing the fixed base 11 on the grinding machine worktable and installing the limiting frame 12 and the locking structure 13 on the fixed base 11; (2) placing multiple metallographic samples 20 into the accommodating space R1; (3) adjusting the movable locking structure 13 to press the multiple metallographic samples 20 against the groove wall of the strip-shaped hollow groove c1 to prevent the multiple metallographic samples 20 from loosening; (4) grinding the upper end surface of the multiple metallographic samples 20 using the grinding wheel assembly; (5) removing the limiting frame 12, the locking mechanism and the multiple metallographic samples 20 from the fixed base 11 and flipping them over, and then fixing the flipped limiting frame 12, the locking mechanism and the multiple metallographic samples 20 back onto the fixed base 11; (6) grinding the lower end surface of the multiple metallographic samples 20 using the grinding wheel assembly.

[0060] Since the multiple metallographic specimens 20 are fixed in the limiting frame 12 by the locking structure 13 when flipping them, the limiting frame 12 holding the multiple metallographic specimens 20 can be directly flipped to switch the upper and lower end faces of the metallographic specimens 20. This eliminates the need to remove the metallographic specimens 20 from the limiting frame 12 and re-clamp them individually to achieve the flipping, thus improving the grinding efficiency of the metallographic specimens 20. It is understood that by grinding the two end faces of the metallographic specimens 20 sequentially, the flatness, thickness uniformity, surface quality, and mechanical stability of the metallographic specimens 20 can be improved, thereby ensuring the accuracy of subsequent observation and analysis.

[0061] Furthermore, the fixed base 11 and the limiting frame 12 are connected by a detachable connection, which makes the fixed base 11 and the limiting frame 12 suitable for work scenarios with frequent disassembly and reduces the difficulty of clamping and reversing the metallographic sample 20.

[0062] Furthermore, in this embodiment of the invention, the multiple metallographic samples 20 clamped in the accommodating space R1 may have the same or different thicknesses. This thickness refers to the thickness of the metallographic sample 20 along the length direction D1 of the strip-shaped hollow groove. In this way, metallographic samples 20 of different thicknesses can be clamped by the metallographic sample clamping device 10, thereby improving the applicability of the metallographic sample clamping device 10.

[0063] In summary, this utility model provides a clamping device 10 for metallographic specimens, including a fixed base 11, a limiting frame 12, and at least one locking structure 13. The limiting frame 12 is detachably connected to the fixed base 11 and has a strip-shaped hollow groove c1. The locking structure 13 is movably connected to the limiting frame 12, forming a receiving space R1 with one end of the locking structure 13 and the groove wall of the strip-shaped hollow groove c1, which can simultaneously accommodate and fix multiple metallographic specimens 20. Since multiple metallographic specimens 20 are fixed in the limiting frame 12 by the locking structure 13, when it is necessary to flip and grind the metallographic specimens 20, the limiting frame 12 holding multiple metallographic specimens 20 can be directly flipped without secondary clamping of the metallographic specimens 20. This enables batch grinding and flipping of metallographic specimens 20, improving the grinding efficiency of the metallographic specimens 20. This solves the problem of low grinding efficiency of metallographic specimens 20 in related technologies.

[0064] Please refer to Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , Figure 5 This is a schematic diagram of the structure of a limiting frame 12 provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of a locking structure 13 provided by this utility model. Figure 7 yes Figure 2 The diagram shows a structural schematic of the metallographic specimen clamping device 10 and the metallographic specimen 20 from another perspective. Figure 8 yes Figure 7 The diagram shows a cross-sectional view of the metallographic specimen clamping device 10 and the metallographic specimen 20 along the A1-A2 position. In an optional embodiment, the locking structure 13 may include a slider portion 131 and a locking portion 132. The limiting frame 12 may also have at least one connecting through hole k1, which communicates with the strip-shaped hollow groove c1. The limiting frame 12 may include multiple connecting through holes k1, which may correspond one-to-one with multiple strip-shaped hollow grooves c1. The connecting through holes k1 may be located at one end of the corresponding strip-shaped hollow groove c1 and communicate with the corresponding strip-shaped hollow groove c1.

[0065] The slider part 131 is movably installed in the strip-shaped hollow groove c1 of the limiting frame 12, and forms a receiving space R1 with the groove wall of the strip-shaped hollow groove c1. The slider part 131 can be movably connected to the limiting frame 12, and the slider part 131 can move along the length direction D1 of the strip-shaped hollow groove to adjust the size of the receiving space R1.

[0066] One end of the locking part 132 can extend into the strip-shaped hollow groove c1 through the connecting through hole k1 and abut against the side of the slider part 131 opposite to the receiving space R1. The locking part 132 is configured to: drive the slider part 131 to move along the length direction D1 of the strip-shaped hollow groove; and fix the slider part 131 when it presses multiple metallographic samples 20 against the groove wall of the strip-shaped hollow groove c1. The extending direction of the connecting through hole k1 can be the same as the length direction D1 of the strip-shaped hollow groove, and the locking part 132 can lock the slider part 131 in the state of pressing multiple metallographic samples 20. Furthermore, by pressing the slider part 131 against the metallographic samples 20, the contact area between the locking structure 13 and the metallographic samples 20 can be increased, avoiding a concentrated force applied by the locking structure 13 to the metallographic samples 20.

[0067] Please refer to Figure 1 , Figure 7 , Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of the structure of a slider part 131 provided in an embodiment of the present invention. Figure 10 yes Figure 7 The diagram shows a cross-sectional view of the metallographic specimen clamping device 10 and the metallographic specimen 20 along the B1-B2 position. In an optional embodiment, the limiting frame 12 may include a frame structure 121 and at least one guide member 122. The frame structure 121 is used to form a strip-shaped hollow groove c1, and the connecting through hole k1 is located in the frame structure 121. The frame structure 121 may include multiple side frames, which are connected end to end to form a strip-shaped hollow hole.

[0068] The guide member 122 may include two guide strips 1221 arranged opposite to each other. The extension direction of either guide strip 1221 is the same as the length direction D1 of the strip-shaped hollow groove, and the guide strip 1221 is fixedly connected to the groove wall of the strip-shaped hollow groove c1. The guide strip 1221 may be bonded or welded to the groove wall of the strip-shaped hollow groove c1, or the guide strip 1221 may be an integral structure with the frame structure 121.

[0069] Along the width direction D2 of the strip-shaped hollow groove, both ends of the slider part 131 have guide grooves c2, and the two guide grooves c2 are respectively connected to the two guide bars 1221. The shape of the guide grooves c2 of the slider part 131 matches the shape of the guide bars 1221 so that the slider part 131 can be movably connected to the guide bars 1221; in this way, the movement direction of the slider part 131 can be controlled by the two guide bars 1221, thereby improving the stability of the slider part 131 during movement.

[0070] Please refer to Figure 2 , Figure 5 , Figure 6 and Figure 7In an optional embodiment, the strip-shaped hollow groove c1 may have a first groove wall c11 and a second groove wall c12 disposed opposite to each other along the width direction D2 of the strip-shaped hollow groove. Both the first groove wall c11 and the second groove wall c12 have a first groove c3. Two guide bars 1221 are respectively fixed in the two first grooves c3. In the width direction D2 of the strip-shaped hollow groove, the height of the guide bar 1221 is equal to the depth of the first groove c3. That is, the end face of the guide bar 1221 may be flush with the first groove wall c11 or the second groove wall c12. The end face of the guide bar 1221 may also be considered as part of the first groove wall c11 or the second groove wall c12. That is, the slider part 131, the part of the end face of the two guide bars 1221, part of the first groove wall c11, part of the second groove wall c12, and the third groove wall c13 can form a relatively regular shaped limiting space, so that the arrangement of multiple metallographic samples 20 in the limiting space is relatively neat. It is understood that the metallographic sample 20 in this embodiment of the present invention can be a block-shaped metallographic sample 20 or a sheet-shaped metallographic sample 20 with a relatively defined shape obtained by preliminary cutting.

[0071] Along the length direction D1 of the strip-shaped hollow groove, there is an installation gap x1 between the end of the guide bar 1221 near the connecting through hole k1 and the groove wall of the first groove c3. The length of the installation gap x1 is greater than the thickness of the slider part 131. The installation gap x1 is used for the insertion or removal of the slider part 131.

[0072] For example, such as Figure 2 and Figure 5 As shown, in the length direction D1 of the strip-shaped hollow groove, the length of the first groove c3 is less than the length of the strip-shaped hollow groove c1, which can have the following two effects: Firstly, when there are multiple metallographic samples 20 in the limiting space, the two sides of the four metallographic samples 20 arranged near the third groove wall c13 can contact the first groove wall c11 and the second groove wall c12, which can improve the stability of these four metallographic samples 20, thereby improving the overall stability of the multiple metallographic samples 20; Secondly, since the first groove c3 is set on the frame structure 121, the structural strength of the area of ​​the frame structure 121 with the first groove c3 is less than the structural strength of the area without the first groove c3. Therefore, the absence of the first groove c3 at the corner of the frame structure 121 can reduce the impact of the first groove c3 on the overall strength of the frame structure 121.

[0073] Please refer to Figure 8In one optional embodiment, the connecting through hole k1 may include a threaded through hole, and the locking part 132 includes a locking bolt 1321. The locking bolt 1321 extends into the strip-shaped hollow groove c1 through the threaded through hole, and the end of the locking bolt 1321 abuts against the slider part 131. The locking bolt 1321 can be movably connected to the frame structure 121 through a threaded connection.

[0074] Please refer to Figure 6 and Figure 7 In an optional embodiment, the locking part 132 may further include a fixing nut 1322, which is located on the side of the threaded through hole away from the slider part 131 and is sleeved on the locking bolt 1321. When the locking bolt 1321 applies pressure toward the slider part 131 toward the plurality of metallographic samples 20, the external force drives the locking bolt 1321 to rotate. The locking bolt 1321 can move along the length direction D1 of the strip-shaped hollow groove while rotating. When the locking bolt 1321 presses the plurality of metallographic samples 20 onto the third groove wall c13 through the slider part 131, the fixing nut 1322 on the locking bolt 1321 is tightened, thereby fixing the locking bolt 1321 and preventing the locking bolt 1321 from loosening during the grinding of the metallographic samples 20.

[0075] Please refer to Figure 2 , Figure 11 and Figure 12 , Figure 11 This is a structural schematic diagram of a fixed base 11 provided in an embodiment of the present invention. Figure 12 yes Figure 7 The diagram shows another cross-sectional view of the metallographic specimen clamping device 10 and the metallographic specimen 20 along the A1-A2 position. In an optional embodiment, the fixed base 11 may have a second groove c4, and the limiting frame 12 may be located in the second groove c4, which can also be called a limiting groove. The shape of the limiting frame 12 can match the shape of the second groove c4 to nest the limiting frame 12 in the second groove c4, thereby achieving a detachable connection between the limiting frame 12 and the fixed base 11.

[0076] In one exemplary embodiment, the bottom of the second groove c4 has a high flatness, and the bottom of the second groove c4 can contact the inner frame and the metallographic sample 20. During the grinding of multiple metallographic samples 20, since multiple metallographic samples 20 can contact the bottom of the second groove c4, the surface flatness of the ground metallographic sample 20 is good.

[0077] In one exemplary embodiment, in the direction perpendicular to the bottom of the second groove c4 (that is, in the depth direction D3 of the strip-shaped hollow groove), the height h1 of the limiting frame 12 is greater than the depth h2 of the second groove c4, and the height h1 of the limiting frame 12 can be less than the height h3 of the metallographic sample 20 to avoid damage to the limiting frame 12 when grinding multiple metallographic samples 20, and the height h4 of the slider part 131 can be less than or equal to the height h1 of the limiting frame 12.

[0078] Please refer to Figure 2 and Figure 11 In one optional embodiment, both ends of the limiting frame 12 along the length direction D1 of the strip-shaped hollow groove have clearance notches 111; at least a portion of the locking part 132 is located in the clearance notches 111. The clearance notches 111 facilitate the movement of the locking part 132, and the presence of clearance notches 111 at both ends of the limiting frame 12 enables a foolproof design, reducing the assembly difficulty of the limiting frame 12 and the fixed base 11.

[0079] In one exemplary embodiment, the fixed base 11, the limiting frame 12, and the slider portion 131 are all symmetrical. The fixed base 11 has a symmetrical structure about a first plane, which is perpendicular to the length direction D1 of the strip-shaped hollow groove, and the geometric midpoint of the fixed base 11 in the length direction D1 of the strip-shaped hollow groove is located on the first plane.

[0080] The limiting frame 12 and the slider part 131 are both symmetrical about the second plane, which is parallel to the bottom of the second groove c4, and the geometric midpoint of the limiting frame 12 and the slider part 131 in the depth direction of the second groove c4 is located on the second plane.

[0081] Please refer to Figure 2 In one optional embodiment, at least one strip-shaped hollow groove c1 may include multiple strip-shaped hollow grooves c1, and at least one locking structure 13 may include multiple locking structures 13; the multiple strip-shaped hollow grooves c1 are arranged along the width direction D2 of the strip-shaped hollow grooves; the multiple locking structures 13 correspond one-to-one with the multiple strip-shaped hollow grooves c1, and one end of the locking structure 13 is located in the corresponding strip-shaped hollow groove c1.

[0082] At least one guide member 122 may include multiple guide members 122, each of which corresponds to a multiple strip-shaped hollow grooves c1, and the guide member 122 is fixed in the corresponding strip-shaped hollow groove c1.

[0083] For example, the number of multiple strip-shaped hollow grooves c1 can be 2, 3, 4, 5 or more, and this embodiment of the utility model does not limit this.

[0084] In summary, this utility model provides a clamping device 10 for metallographic specimens, including a fixed base 11, a limiting frame 12, and at least one locking structure 13. The limiting frame 12 is detachably connected to the fixed base 11 and has a strip-shaped hollow groove c1. The locking structure 13 is movably connected to the limiting frame 12, forming a receiving space R1 with one end of the locking structure 13 and the groove wall of the strip-shaped hollow groove c1, which can simultaneously accommodate and fix multiple metallographic specimens 20. Since multiple metallographic specimens 20 are fixed in the limiting frame 12 by the locking structure 13, when it is necessary to flip and grind the metallographic specimens 20, the limiting frame 12 holding multiple metallographic specimens 20 can be directly flipped without secondary clamping of the metallographic specimens 20. This enables batch grinding and flipping of metallographic specimens 20, improving the grinding efficiency of the metallographic specimens 20. This solves the problem of low grinding efficiency of metallographic specimens 20 in related technologies.

[0085] Furthermore, the connection and assembly methods of the multiple structures in the metallographic sample clamping device 10 in this embodiment are relatively simple, which facilitates the disassembly and maintenance of the metallographic sample clamping device 10.

[0086] Please refer to Figure 13 , Figure 13 This is a schematic diagram of the structure of a metallographic sample grinding device 30 provided in an embodiment of the present invention. The metallographic sample grinding device 30 may include: a grinding table 31, a grinding wheel assembly 32, and a metallographic sample clamping device 10. The metallographic sample clamping device 10 includes the metallographic sample clamping device 10 in any of the above embodiments.

[0087] The metallographic sample clamping device 10 is located on the grinding machine table 31, and the fixed base 11 in the metallographic sample clamping device 10 is magnetically connected to the grinding machine table 31. The material of the fixed base 11 may include a magnetically conductive material (e.g., iron), and the material of the grinding machine table 31 may include a magnet, so that the fixed base 11 can be magnetically adsorbed on the grinding machine table 31, thereby fixing the fixed base 11 on the grinding machine table 31.

[0088] The grinding wheel assembly 32 is located on the side of the limiting frame 12 in the metallographic specimen clamping device 10 away from the fixed base 11, and is used to grind multiple metallographic specimens 20.

[0089] In one exemplary embodiment, the process of grinding the metallographic sample 20 using the metallographic sample grinding equipment 30 in this embodiment of the present invention may include the following steps:

[0090] (1) The fixed base 11 is attached to the grinding machine worktable 31 according to the preset placement position, and the limiting frame 12 is placed in the second groove c4 of the fixed base 11.

[0091] (2) Place multiple metallographic specimens 20 into the strip-shaped hollow groove c1 of the limiting frame 12.

[0092] (3) Place the slider 131 into the strip-shaped hollow groove c1 and slide it to the position where it contacts the metallographic sample 20.

[0093] (4) Adjust the locking part 132 so that one end of the locking part 132 abuts against the side of the slider part 131 away from the metallographic sample 20, and press the multiple metallographic samples 20 onto the groove wall of the strip-shaped hollow groove c1 through the slider part 131 to prevent the multiple metallographic samples 20 from loosening.

[0094] (5) The upper surfaces of multiple metallographic specimens 20 are ground by grinding wheel assembly 32.

[0095] (6) Remove the limiting frame 12, the locking mechanism and the multiple metallographic specimens 20 from the fixed base 11 and flip them over (during this process, there is no need to move the fixed base 11), and then place the flipped limiting frame 12, the locking mechanism and the multiple metallographic specimens 20 into the second groove c4 of the fixed base 11.

[0096] (7) Slightly loosen the locking part 132 so that multiple metallographic samples 20 fall under the action of gravity and contact the bottom of the second groove c4 of the fixed base 11 so that the end faces of multiple metallographic samples 20 are flush.

[0097] (8) The lower end face of multiple metallographic specimens 20 is ground by grinding wheel assembly 32.

[0098] It should be noted that the dimensions of the areas may have been exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element is referred to as "on top of" another element, it can be directly on the other element, or there may be intermediate elements. Additionally, it is understood that when an element is referred to as "below" another element, it can be directly below the other element, or there may be more than one intermediate element. Furthermore, it is also understood that when an element is referred to as "between" two elements, it can be the only layer between the two elements, or there may be more than one intermediate element. Similar reference numerals throughout indicate similar elements.

[0099] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0100] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for clamping a metallographic specimen, characterized in that The application relates to a fixing base, a limiting frame and at least one locking structure. The limiting frame is arranged on the fixing base and detachably connected with the fixing base, and the limiting frame is provided with at least one strip-shaped hollow slot. The locking structure is movably connected with the limiting frame, one end of the locking structure is arranged in the strip-shaped hollow slot of the limiting frame, and the locking structure and the slot wall of the strip-shaped hollow slot surround a containing space. The containing space is used for containing a plurality of metallographic samples, and the locking structure can move along the length direction of the strip-shaped hollow slot and press the plurality of metallographic samples against the slot wall of the strip-shaped hollow slot. The locking structure comprises a sliding block part and a locking part, the limiting frame is further provided with at least one connecting through hole which is communicated with the strip-shaped hollow slot.

2. The device for holding a metallographic specimen according to claim 1, characterized in that The sliding block part is movably arranged in the strip-shaped hollow slot and surrounds the containing space with the slot wall of the strip-shaped hollow slot. One end of the locking part extends into the strip-shaped hollow slot through the connecting through hole and abuts against one side of the sliding block part which is away from the containing space, wherein the locking part is configured to drive the sliding block part to move along the length direction of the strip-shaped hollow slot and fix the sliding block part when the sliding block part presses the plurality of metallographic samples against the slot wall of the strip-shaped hollow slot. The limiting frame comprises a frame structure and at least one guide piece.

3. The metallographic specimen holder of claim 2, wherein, The frame structure is used for surrounding the strip-shaped hollow slot, and the connecting through hole is arranged in the frame structure. The guide piece comprises two oppositely arranged guide strips, the extension direction of the guide strips is the same as the length direction of the strip-shaped hollow slot, and the guide strips are fixedly connected with the slot wall of the strip-shaped hollow slot. In the width direction of the strip-shaped hollow slot, both ends of the sliding block part are provided with guide grooves, and the two guide grooves are respectively connected with the two guide strips. The strip-shaped hollow slot is provided with a first slot wall and a second slot wall which are oppositely arranged in the width direction of the strip-shaped hollow slot, the first slot wall and the second slot wall are both provided with first grooves, and the two guide strips are respectively fixed in the two first grooves.

4. The metallographic specimen holder of claim 3, wherein In the width direction of the strip-shaped hollow slot, the height of the guide strip is equal to the depth of the first groove. In the length direction of the strip-shaped hollow slot, an installation gap is formed between one end of the guide strip which is close to the connecting through hole and the slot wall of the first groove, and the length of the installation gap is greater than the thickness of the sliding block part. The connecting through hole comprises a threaded through hole, the locking part comprises a locking bolt, the locking bolt extends into the strip-shaped hollow slot through the threaded through hole, and the end of the locking bolt abuts against the sliding block part.

5. The metallographic specimen holder of claim 2, wherein, The locking part further comprises a fixing nut, the fixing nut is arranged on the side of the threaded through hole which is away from the sliding block part, and the fixing nut is sleeved on the locking bolt.

6. The metallographic specimen holder of claim 5, wherein, The fixing base is provided with a second groove, and the limiting frame is arranged in the second groove.

7. A device for holding metallographic specimens as claimed in any of claims 2 to 6, characterized in that In the direction perpendicular to the groove bottom of the second groove, the height of the limiting frame is greater than the depth of the second groove. In the length direction of the strip-shaped hollow slot, both ends of the limiting frame are provided with avoiding notches.

8. The device for holding metallographic specimens according to claim 7, characterized in that ​ At least part of the locking portion is located in the avoiding gap.

9. The metallographic specimen holder of claim 1, wherein, The at least one strip-shaped hollow groove comprises a plurality of strip-shaped hollow grooves, and the at least one locking structure comprises a plurality of locking structures. The plurality of strip-shaped hollow grooves are arranged along the width direction of the strip-shaped hollow grooves. The plurality of locking structures correspond to the plurality of strip-shaped hollow grooves one by one, and one end of the locking structure is located in the corresponding strip-shaped hollow groove.

10. A metallographic specimen grinding apparatus characterized by comprising: Comprise: The grinding machine workbench, the grinding wheel assembly and the metallographic specimen clamping device, the metallographic specimen clamping device comprises the metallographic specimen clamping device of any one of claims 1 to 9; The metallographic specimen clamping device is located on the grinding machine workbench, and the fixed base in the metallographic specimen clamping device is magnetically connected with the grinding machine workbench; The grinding wheel assembly is located on the side of the limiting frame in the metallographic specimen clamping device away from the fixed base.

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