Sample centering line cutting device

Abstract

The utility model relates to a sample centering wire cutting device which comprises a base, a wire storage cylinder, a wire frame, a molybdenum wire and a workbench are arranged on the base, the upper surface of the workbench is connected with a clamping assembly and a supporting frame, the clamping assembly comprises supporting beams which are symmetrically arranged, and the upper surfaces of the two supporting beams are connected with a two-way lead screw and a guide rod respectively. Symmetrically-arranged cross beams are connected between the two-way lead screw and the guide rod, clamping plates are connected to the surfaces of the cross beams, the two sets of clamping plates move oppositely, the clamping plates clamp and fix samples, and a molybdenum wire penetrates through the space between the two sets of clamping plates. According to the utility model, the bidirectional screw rod rotates, so that the two groups of cross beams can drive the two groups of clamping plates to move oppositely, and the centering clamping of a sample is realized. And the workbench moves transversely to realize centering cutting of a sample, so that the ideal linear cutting effect is ensured, and the accuracy of tissue detection and analysis is improved.

Description

Technical Field

[0001] The utility model relates to wire cutting equipment, in particular to a wire cutting device for sample centering. Background Art

[0002] In the simulation experiment of heat treatment of steel materials, it is necessary to conduct microstructure analysis on the simulated samples. Due to the differences in heating and deformation effects on different parts, the microstructures of different parts are different. Usually, the central part of the sample is selected for analysis and detection, and the available processing method is to cut it in the middle with wire cutting; to evaluate the resistance spot welding performance of steel plates, it is necessary to detect the microstructure and measure the nugget diameter on the cross-section of the weld spot. Since the weld spot is circular, the maximum cross-section diameter must be the cross-section passing through the center of the weld spot to ensure the accuracy of the detection and measurement results. Similarly, wire cutting is also required to cut from the center of the weld spot.

[0003] Currently, the traditional technology mainly cuts by scribing on the sample and centering with the naked eye. Moreover, due to the small size of the sample, the centering of wire cutting cannot be effectively guaranteed, the effect is not ideal, and it affects the accuracy of subsequent microstructure detection and analysis.

[0004] The patent with the application number CN202221676030.0 discloses a "silicon rod centering device and cutting equipment". The centering device includes a centering support seat; a centering mechanism arranged on the centering support seat; the centering mechanism has at least a pair of centering jaws corresponding to the silicon rod; a pair of centering jaws can approach or move away from each other to move the silicon rod to the middle position between the pair of centering jaws; a centering adjustment component arranged on the centering support seat for adjusting the position of the centering mechanism. The above centering cutting device is only applicable to rod-shaped samples and cannot achieve centering cutting for disc-shaped or sheet-shaped samples after steel material thermal simulation or steel plate resistance spot welding.

[0005] The patent with the application number CN202220456928.0 discloses an "optical glass single-wire cutting centering device". The device includes a loading platform and a centering mechanism; a cavity is opened in the middle of the loading platform, and a linear cutting opening and a centering adjustment opening are opened on the top surface of the loading platform; the centering mechanism includes clamping plates, pressure sensors, a controller, and a first driving component. The pressure sensors are fixedly arranged on the inner side of the top of the clamping plates, and the two clamping plates are symmetrically arranged on both sides of the linear cutting opening. The first driving component is used to control the two clamping plates to move symmetrically with the linear cutting opening as the center line, and the controller is electrically connected to the pressure sensors and the first driving component. The above device has low applicability and is only applicable to optical glass with regular shape and size, and cannot achieve centering cutting for disc-shaped, rod-shaped samples after steel material thermal simulation or steel plate resistance spot welding. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a sample centering wire cutting device to improve the centering of the sample after cutting.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] A sample centering wire cutting device includes a base, on which a wire storage cylinder, a wire frame, a molybdenum wire and a workbench are provided. A clamping assembly and a support frame are connected to the upper surface of the workbench. The clamping assembly includes symmetrically arranged support beams. The upper surfaces of the two support beams are respectively connected with a bidirectional lead screw and a guide rod. A symmetrically arranged cross beam is connected between the bidirectional lead screw and the guide rod. A clamping plate is connected to the surface of the cross beam. By moving the two groups of clamping plates towards each other, the clamping plate clamps and fixes the sample, and the molybdenum wire passes through between the two groups of clamping plates.

[0009] Preferably, the bidirectional lead screw and the guide rod are both connected to the support beam through vertical plates. The bidirectional lead screw penetrates and is threadedly connected to the two groups of cross beams. A lead screw motor is fixedly connected to the side wall of a vertical plate, and the output shaft of the lead screw motor is fixedly connected to the end of the bidirectional lead screw. The lead screw motor is used to drive the bidirectional lead screw to rotate. The guide rod penetrates and is slidably connected to the two groups of cross beams.

[0010] Preferably, a plurality of columns are fixedly connected to the bottom surfaces of the two support beams, and the columns are fixedly connected to the surface of the workbench to connect the support beam and the workbench together.

[0011] Preferably, a plurality of groups of mounting holes are formed on the surface of the cross beam, and the clamping plate is fixed to the cross beam by bolts in the mounting holes.

[0012] Preferably, a groove is formed on the side wall of the clamping plate, an arc groove is formed on the inner wall of the groove, a clamping groove is formed on the inner wall of the arc groove, and the clamping groove is located in the middle of the arc groove. A threaded rod penetrates and is threadedly connected to the edge of the clamping opening of the clamping plate. A rotating wheel is fixedly connected to the top end of the threaded rod, and a pressing plate is movably connected to the bottom end of the threaded rod.

[0013] Preferably, the support frame is fixedly connected to the surface of the workbench. A first sliding groove and a second sliding groove are correspondingly formed on the surfaces of the support frame and the workbench, and the molybdenum wire passes through the first sliding groove and the second sliding groove.

[0014] Preferably, the workbench includes a base and a sliding table. A linear slide rail is provided between the base and the sliding table, and the sliding table moves along the length direction of the support frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. In the present utility model, the bidirectional lead screw is driven to rotate by a lead screw motor, so that two cross beams can drive two clamping plates to move towards each other, realizing the centering and clamping of the sample. The workbench moves horizontally to perform centering cutting on the sample, thereby ensuring the ideal effect of wire cutting and improving the accuracy of tissue detection and analysis.

[0017] 2. In the present utility model, the rod-shaped sample is clamped by fitting the arc-shaped groove with the outer wall of the rod-shaped sample. The clamping groove is located in the middle of the arc-shaped groove, and the disc-shaped sample can be clamped. By rotating the rotating wheel, the threaded rod drives the pressing plate to move downward, which can contact the surfaces of the disc-shaped, rod-shaped, and sheet-shaped samples, playing an auxiliary positioning role to ensure the stability of the sample, so that samples of different shapes can be cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model.

[0019] Figure 2 is a schematic structural diagram of the support frame.

[0020] Figure 3 is a schematic structural diagram of the clamping assembly.

[0021] Figure 4 is a schematic structural diagram of the clamping plate.

[0022] In the figure: base 1, clamping assembly 2, wire storage cylinder 3, wire frame 4, molybdenum wire 5, workbench 6;

[0023] support beam 21, column 22, cross beam 23, clamping plate 24, vertical plate 25, bolt 26, bidirectional lead screw 27, lead screw motor 28, guide rod 29;

[0024] support frame 31, first chute 32, second chute 33;

[0025] groove 241, arc-shaped groove 242, clamping groove 243, pressing plate 244, threaded rod 245, rotating wheel 246. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is more than two.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] A sample centering wire cutting device includes a base 1, on which a wire storage cylinder 3, a wire frame 4, a molybdenum wire 5, and a workbench 6 are provided. A clamping assembly 2 and a support frame 31 are arranged on the upper surface of the workbench 6. The clamping assembly 2 includes symmetrically arranged support beams 21. The upper surfaces of the two support beams 21 are respectively connected with a bidirectional lead screw 27 and a guide rod 29. A symmetrically arranged cross beam 23 is connected between the bidirectional lead screw 27 and the guide rod 29. A clamping plate 24 is connected to the surface of the cross beam 23. By moving the two groups of clamping plates 24 towards each other, the clamping plates 24 clamp and fix the sample. The molybdenum wire 5 passes through between the two groups of clamping plates 24 to perform wire cutting on the clamped sample.

[0029] The bidirectional lead screw 27 and the guide rod 29 are both connected to the support beam 21 through vertical plates 25. The bidirectional lead screw 27 passes through and is threadedly connected to the two cross beams 23. A lead screw motor 28 is fixedly connected to the side wall of a vertical plate. The output shaft of the lead screw motor 28 is fixedly connected to the end of the bidirectional lead screw 27. The lead screw motor 28 is used to drive the bidirectional lead screw 27 to rotate, so that the two cross beams 23 can drive the two clamping plates 24 to move towards each other to achieve centering clamping of the sample.

[0030] A plurality of columns 22 are fixedly connected to the bottom surfaces of the two support beams 21. The columns 22 are fixedly connected to the surface of the workbench 6 to connect the support beam 21 and the workbench 6 together. The plurality of columns 22 provide a stable support effect for the support beam 21.

[0031] A plurality of groups of mounting holes are formed on the surface of the cross beam 23. The clamping plate 24 is fixed to the cross beam 23 through bolts 26 in the mounting holes.

[0032] A groove 241 is formed on the side wall of the clamping plate 24. An arc-shaped groove 242 is formed on the inner wall of the groove 241, and a clamping groove 243 is formed on the inner wall of the arc-shaped groove 242. The arc-shaped groove 242 is used for clamping a rod-shaped sample. The clamping groove 243 is located at the middle of the arc-shaped groove 242. The threaded rod 245 penetrates through and is threadedly connected to the edge of the clamping opening of the clamping plate 24. The top end of the threaded rod 245 is fixedly connected to a rotating wheel 246, and the bottom end of the threaded rod 245 is movably connected to a pressing plate 244. The clamping plate 24 can perform centering clamping on rod-shaped, disc-shaped, and sheet-shaped samples. The arc-shaped groove 242 is used for rod-shaped samples, the clamping groove 243 is used for clamping disc-shaped samples, and the sheet-shaped samples are clamped between two groups of grooves 241.

[0033] The support frame 31 is fixedly connected to the surface of the workbench 6. A first chute 32 and a second chute 33 are respectively formed on the surfaces of the support frame 31 and the workbench 6, and the molybdenum wire passes through the first chute 32 and the second chute 33.

[0034] The workbench 6 includes a base and a sliding table. A linear slide rail is provided between the base and the sliding table, and the sliding table moves along the length direction of the support frame 31.

[0035] Working principle:

[0036] During use, the rod-shaped sample is clamped by the arc-shaped groove 242 fitting with the outer wall of the rod-shaped sample. The clamping groove 243 can clamp the disc-shaped sample. The lead screw motor 28 is driven to rotate the bidirectional lead screw 27, so that the two cross beams 23 can drive the two clamping plates 24 to move towards each other, realizing centering clamping of the sample. The sheet-shaped sample can be clamped between the two groups of grooves 241. By rotating the rotating wheel 246, the threaded rod 245 drives the pressing plate 244 to move downward, and can contact the surfaces of the disc-shaped, rod-shaped, and sheet-shaped samples, playing a role in auxiliary positioning and ensuring the stability of the sample. By driving the linear slide rail of the workbench, the workbench moves horizontally, so that the molybdenum wire 5 cuts the sample.

[0037] To make the purpose, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention are now clearly and completely described. However, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Combining the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] Embodiment

[0039] A sample centering wire cutting device includes a base 1, on which a wire storage cylinder 3, a wire frame 4, a molybdenum wire 5, and a workbench 6 are provided. On the upper surface of the workbench 6, a clamping assembly 2 and a support frame 31 are arranged. The support frame 31 is fixedly connected to the surface of the workbench 6. A first chute 32 and a second chute 33 are respectively formed on the surface of the support frame 31 and the workbench 6, and the molybdenum wire passes through the first chute 32 and the second chute 33. The workbench 6 includes a base and a sliding table. A linear slide rail is provided between the base and the sliding table, and the sliding table moves along the length direction of the support frame 31.

[0040] The clamping assembly 2 includes symmetrically arranged support beams 21. Seven columns 22 are fixedly connected to the bottom surfaces of the two support beams 21. The columns 22 are fixedly connected to the surface of the workbench 6, connecting the support beams 21 to the workbench 6. The seven columns 22 provide a stable supporting effect for the support beams 21.

[0041] The upper surfaces of the two support beams 21 are respectively connected with a bidirectional lead screw 27 and a guide rod 29. A symmetrically arranged cross beam 23 is connected between the bidirectional lead screw 27 and the guide rod 29. The bidirectional lead screw 27 and the guide rod 29 are both connected to the support beam 21 through a vertical plate 25. The bidirectional lead screw 27 passes through and is threadedly connected to the two cross beams 23. A lead screw motor 28 is fixedly connected to the side wall of a vertical plate. The output shaft of the lead screw motor 28 is fixedly connected to the end of the bidirectional lead screw 27. The lead screw motor 28 is used to drive the bidirectional lead screw 27 to rotate, so that the two cross beams 23 can drive the two clamping plates 24 to move towards each other, realizing the centering clamping of the sample.

[0042] Six groups of mounting holes are formed on the surface of the cross beam 23. The clamping plates 24 are fixed to the cross beam 23 through bolts in the mounting holes. The clamping plates 24 are connected to the surface of the cross beam 23. Grooves 241 are formed on the side walls of the clamping plates 24. Arc-shaped grooves 242 are formed on the inner walls of the grooves 241. Card slots 243 are formed on the inner walls of the arc-shaped grooves 242. The arc-shaped grooves 242 are used to clamp rod-shaped samples. The card slots 243 are located in the middle of the arc-shaped grooves 242. A threaded rod 245 passes through and is threadedly connected to the clamping edge of the clamping plate 24. The top end of the threaded rod 245 is fixedly connected with a runner 246, and the bottom end of the threaded rod 245 is movably connected with a pressing plate 244. Through the two clamping plates 24 moving towards each other, the clamping plates 24 clamp and fix the sample. The molybdenum wire 5 passes between the two clamping plates 24 to perform wire cutting on the clamped sample.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principle and basic spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample centering wire cutting device, comprising a base, on which a wire storage tube, a wire rack, a molybdenum wire, and a workbench are arranged, characterized in that: The upper surface of the workbench is connected with a clamping assembly and a support frame, the clamping assembly includes symmetrically arranged support beams, the upper surfaces of the two support beams are respectively connected with a bidirectional screw rod and a guide rod, a symmetrically arranged crossbeam is connected between the bidirectional screw rod and the guide rod, and a splint is connected to the surface of the crossbeam, and the two sets of splints move toward each other, the splint clamps and fixes the sample, and the molybdenum wire passes through between the two sets of splints.

2. A sample centering line cutting device according to claim 1, characterized in that: The bidirectional screw and guide rod are connected to the support beam through the vertical plate. The bidirectional screw passes through and is threadedly connected to the two sets of cross beams. A screw motor is fixedly connected to the side wall of a vertical plate. The output shaft of the screw motor is fixedly connected to the end of the bidirectional screw. The screw motor is used to drive the bidirectional screw to rotate. The guide rod passes through and is slidably connected to the two sets of cross beams.

3. A sample centering line cutting device according to claim 1, characterized in that: The bottom surfaces of the two support beams are fixedly connected with a plurality of columns, and the columns are fixedly connected to the surface of the workbench to connect the support beams and the workbench together.

4. A sample centering line cutting device according to claim 1, characterized in that: A plurality of mounting holes are arranged on the surface of the crossbeam, and the clamping plate is fixed on the crossbeam through bolts in the mounting holes.

5. A sample centering line cutting device according to claim 1, characterized in that: A groove is provided on the side wall of the splint, an arc groove is provided on the inner wall of the groove, a clamping groove is provided on the inner wall of the arc groove, the clamping groove is located in the middle of the arc groove, a threaded rod passes through and is threadedly connected to the clamping edge of the splint, the top end of the threaded rod is fixedly connected to the rotating wheel, and the bottom end of the threaded rod is movably connected to the pressure plate.

6. A sample centering line cutting device according to claim 1, characterized in that: The support frame is fixedly connected to the surface of the workbench. A first slide groove and a second slide groove are correspondingly provided on the support frame and the surface of the workbench. The molybdenum wire passes through the first slide groove and the second slide groove.

7. A sample centering line cutting device according to claim 1, characterized in that: The workbench comprises a base and a slide, a linear slide rail is arranged between the base and the slide, and the slide moves along the length direction of the support frame.

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