Sample preparation polishing machine of electron microscope

Abstract

The utility model provides a sample preparation polishing machine of an electron microscope, which belongs to the technical field of electron microscope sample preparation and comprises a machine shell, a water pump is arranged at the top of the machine shell, a processing groove is formed in the top of the machine shell, and an inserting assembly is arranged between a linkage rotating assembly and a grinding disc. The two grinding discs different in mesh number rotate at the same time through the linkage rotating assembly, samples are ground through the grinding discs different in roughness, the smoothness and flatness of the surfaces of the samples are guaranteed, the observation effect of an electron microscope is guaranteed after the samples are ground to be in the mirror surface effect, and when the grinding discs are replaced, the taking and placing assembly is driven by the displacement mechanism to move, so that the grinding efficiency is improved. The grinding disc is separated from the linkage rotating assembly through the inserting assembly by the taking and placing assembly until the grinding disc moves to the machining groove, then the grinding disc is separated through the taking and placing assembly to be replaced, the operation process is safer, and convenience is brought to the operation process of related personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of electron microscope sample preparation, and specifically relates to a sample preparation polishing machine for an electron microscope. Background Technique

[0002] The electron microscope, abbreviated as EM, has become an indispensable important tool in modern science and technology after more than fifty years of development. The electron microscope consists of three parts: a lens barrel, a vacuum device, and a power supply cabinet. The electron lens is used to focus electrons and is the most important component in the lens barrel of the electron microscope. Generally, magnetic lenses are used, and sometimes electrostatic lenses are also used.

[0003] In the process of electron microscope sample preparation, the bottom core needs to be embedded at the bottom of the embedding material by hot melting, and then the sample is placed into the electron microscope through sample embedding. However, after the sample is embedded in the bottom core, the surface of the sample is rough and uneven. It is necessary to polish the sample to make the surface smooth and flat, so as to achieve a mirror effect and ensure the observation effect of the electron microscope. For this reason, we propose a sample preparation polishing machine for an electron microscope.

[0004] It should be noted that the information disclosed in the above background technique section is only used to strengthen the understanding of the background technique section of this application, and therefore may include prior art information that does not constitute known to those of ordinary skill in the art. Content of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To solve the problem of polishing electron microscope samples in the above prior art, the utility model provides a sample preparation polishing machine for an electron microscope, which adopts a grinding disc mechanism that is convenient to replace and a rotating polishing component to achieve the effect of improving the sample preparation efficiency. The specific technical solution is as follows:

[0006] A sample preparation polishing machine for an electron microscope includes a machine shell. A water pump is arranged at the top of the machine shell. A processing groove is opened at the top of the machine shell. A linkage rotation component for simultaneously driving two grinding discs to rotate is arranged at the bottom of the inner cavity of the machine shell. An insertion component is arranged between the linkage rotation component and the grinding disc. A picking and placing component for replacing the grinding disc is arranged in the inner cavity of the machine shell, and the picking and placing component corresponds to the grinding disc. A displacement mechanism for adjusting the position of the picking and placing component is arranged in the inner cavity of the machine shell.

[0007] In the above technical solution, the linkage rotation component includes two first gears rotatably arranged at the bottom of the inner cavity of the machine shell. A second gear is rotatably arranged at the bottom of the inner cavity of the machine shell, and the second gear meshes with both of the first gears simultaneously.

[0008] The insertion component includes an insertion block disposed above the first gear, a socket is provided below the grinding disc, a slot is formed at the bottom of the socket, and the grinding disc is disposed on the top of the socket through a disassembly and assembly component.

[0009] A first magnet is embedded at the top of the insertion block, a second magnet is embedded at the top inner wall of the slot, the magnetic poles of the opposite surfaces of the first magnet and the second magnet are opposite, and the first magnet corresponds to the second magnet.

[0010] The disassembly and assembly component includes a connection seat fixedly installed on the circumferential outer wall of the socket, a connection hole is circumferentially formed at the bottom of the grinding disc near the edge, and the connection seat corresponds to the connection hole.

[0011] The picking and placing component includes an annular seat disposed above the grinding disc, a cylinder is embedded on the circumferential outer wall near the bottom of the annular seat, and a support plate for clamping the bottom of the grinding disc is provided at the movable end of the cylinder.

[0012] The displacement mechanism includes a lead screw rotatably disposed on the top inner wall of the machine shell, and the lead screw is located between the two processing grooves. An adjusting seat is threadedly connected to the outside of the lead screw, the adjusting seat is connected to the outer wall of the annular seat, and a support component for supporting the bottom of the lead screw is provided in the inner cavity of the machine shell.

[0013] The support component includes a support seat rotatably disposed at the bottom of the lead screw, the bottom end of the lead screw is rotatably disposed on the top of the support seat, one ends of support rods are symmetrically and fixedly installed on the circumferential outer wall of the support seat, and the other ends of the support rods are fixedly installed on the top inner wall of the machine shell.

[0014] A guiding component for preventing the picking and placing component from shifting is provided in the inner cavity of the machine shell.

[0015] The guiding component includes a guiding rod embedded in the inner cavity of the machine shell, a guiding seat is sleeved on the outer wall of the guiding rod, and the guiding seat is connected to the annular seat.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The sample preparation polishing machine of this electron microscope:

[0017] First, when polishing the electron microscope embedded sample, the two grinding discs with different mesh numbers rotate simultaneously through the linkage rotation component, and the sample is polished by the grinding discs with different roughnesses, ensuring the smoothness and flatness of the sample surface. After grinding to a mirror effect, the observation effect of the electron microscope is ensured.

[0018] Second, when driving the rotation of two grinding discs simultaneously, the output shaft of the first motor drives the second gear to rotate, causing the two first gears that are simultaneously meshed with the second gear to rotate. The first gears drive the grinding discs to rotate through the insertion assembly, thus facilitating the polishing process for relevant personnel.

[0019] Third, when installing the grinding disc, the displacement mechanism drives the socket to move, causing the socket to drive the cross-shaped slot at the bottom to be clamped outside the plug block at the top of the movable column. Through the clamping cooperation between the plug block and the slot, the socket rotates along with the movable column, thereby driving the grinding disc to rotate, making the installation and disassembly process of the grinding disc more convenient.

[0020] Fourth, the first magnetic block and the second magnetic block are respectively fixedly embedded inside the two installation grooves. Since the magnetic poles of the first magnetic block and the second magnetic block are opposite, they will attract each other, thus ensuring the stability of the connection between the grinding disc on the socket.

[0021] Fifth, when disassembling and assembling the grinding disc, the output shaft of the second motor drives the lead screw to rotate, causing the adjusting seat threadedly connected to the outside of the lead screw to drive the two grinding discs located inside the annular seat to move simultaneously through the connecting rods on both sides, and adjusting the positions of the two grinding discs at the same time, thereby making the operation of the grinding disc disassembly and assembly process more convenient.

[0022] Sixth, during the process of rotating the lead screw to adjust the position of the annular seat through the connecting rod by the adjusting seat connected by threads, the annular seat drives the guide seat to slide along the outer wall of the guide rod through the fixed rod. The stability of the moving direction of the annular seat is ensured by the two guide rods parallel to the lead screw, avoiding the deviation of the position of the grinding disc, and thus ensuring the accuracy of the position adjustment of the grinding disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a sample preparation polishing machine of an electron microscope according to the present utility model;

[0024] Figure 2 is a partial cross-sectional view of the housing part of the present utility model Figure 1 ;

[0025] Figure 3 is a partial cross-sectional view of the housing part of the present utility model Figure 2 ;

[0026] Figure 4 is a partial cross-sectional view of the housing part of the present utility model Figure 3 ;

[0027] Figure 5 is a partial cross-sectional view of the housing part of the present utility model Figure 4 ;

[0028] Figure 6Explosion schematic of part of the grinding disc replacement mechanism of the present utility model Figure 1 ;

[0029] Figure 7 Explosion schematic of part of the grinding disc replacement mechanism of the present utility model Figure 2 ;

[0030] Among them, Figures 1 to 7 The corresponding relationship between the reference numerals in the figure and the component names is as follows: 1 - machine shell, 2 - water pump, 3 - first gear, 4 - insertion block, 5 - socket, 6 - first magnet, 7 - grinding disc, 8 - processing groove, 10 - motor cover, 11 - lead screw, 12 - adjusting seat, 13 - second motor, 14 - second gear, 15 - annular seat, 16 - connecting rod, 17 - support seat, 18 - support rod, 19 - fixed rod, 20 - mounting seat, 21 - guide seat, 22 - guide rod, 23 - connecting seat, 25 - movable column, 26 - first motor, 27 - slot, 28 - connecting hole, 29 - support plate, 30 - cylinder, 31 - second magnet. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Next, in combination with specific implementation cases and attached Figures 1 - 6 The present utility model will be further described, but the present utility model is not limited to these embodiments.

[0033] A sample polishing machine for an electron microscope includes a machine shell 1, and a water pump 2 is arranged on the top of the machine shell 1. Two water pumps 2 are symmetrically and fixedly embedded on the top of the machine shell 1, and the water outlet ports of the water pumps 2 face the processing groove 8. During the polishing process of the sample, the water from the water pump 2 is used for cooling to avoid the surface temperature of the sample from being too high, thereby protecting the sample. A processing groove 8 is opened on the top of the machine shell 1. Two processing grooves 8 communicating with the inside of the machine shell 1 are symmetrically opened on the top of the machine shell 1, so that the sample embedded with the bottom core is placed in the processing groove 8 for polishing.

[0034] At the bottom of the inner cavity of the housing 1, there is a linkage rotation assembly for simultaneously driving two grinding disks 7 to rotate. An insertion assembly is provided between the linkage rotation assembly and the grinding disks 7. The two grinding disks 7 are rotated simultaneously by the linkage rotation assembly, and the sample is polished by the two grinding disks 7 with different mesh numbers, thereby ensuring the smoothness of the sample surface. Through the insertion assembly, the two grinding disks 7 are respectively inserted into the linkage rotation assembly. When the two grinding disks 7 move upward in the vertical direction, the grinding disks 7 are separated from the linkage selection assembly through the insertion assembly. When the two grinding disks 7 move downward in the vertical direction, the grinding disks 7 are clamped to the linkage rotation assembly through the insertion assembly.

[0035] In the inner cavity of the housing 1, there is a pick-and-place assembly for replacing the grinding disks 7, and the pick-and-place assembly corresponds to the grinding disks 7. A displacement mechanism for adjusting the position of the pick-and-place assembly is provided in the inner cavity of the housing 1. The grinding disks 7 are picked up by the pick-and-place assembly, and the pick-and-place assembly installs and disassembles the grinding disks 7 through the displacement mechanism. The position of the pick-and-place assembly corresponds to the position of the processing groove 8, so that the displacement mechanism takes out the removed grinding disks 7 from the processing groove 8. During installation, the grinding disks 7 are inserted into the linkage rotation assembly through the insertion assembly by the displacement mechanism. This makes the operation process more convenient.

[0036] When polishing the electron microscope embedded sample, the two grinding disks 7 with different mesh numbers are rotated simultaneously by the linkage rotation assembly, and the sample is polished by the grinding disks 7 with different roughnesses, ensuring the smooth flatness of the sample surface. After grinding to a mirror effect, the observation effect of the electron microscope is ensured. During the grinding process, the grinding effect of the sample is improved by adding grinding paste, and at the same time, the surface of the sample is cooled by the water of the water pump 2 to prevent the sample temperature from being too high and affecting the internal molecular changes of the sample. Due to the physical reaction of the molecules, the internal part of the sample changes. Therefore, through the cooling treatment, the quality of the sample is ensured.

[0037] When replacing the grinding disks 7, the displacement mechanism drives the pick-and-place assembly to move, so that the pick-and-place assembly separates the grinding disks 7 from the linkage rotation assembly through the insertion assembly until it moves to the processing groove 8. Then, the grinding disks 7 are removed and replaced by the pick-and-place assembly, making the operation process safer and thus bringing convenience to the operation process of relevant personnel.

[0038] Among them, the linkage rotation assembly includes two first gears 3 rotatably arranged at the bottom of the inner cavity of the casing 1. A second gear 14 is rotatably arranged at the bottom of the inner cavity of the casing 1, and the second gear 14 meshes with the two first gears 3 at the same time. Two bearings are symmetrically embedded and installed at the bottom of the inner wall of the casing 1, and the lower ends of the two movable columns 25 are respectively embedded and installed inside the two bearings, so that the two movable columns 25 rotate in the inner cavity of the casing 1 in parallel. The two first gears 3 are respectively fixedly sleeved outside the two movable columns 25 through the mounting holes opened at the centers, so that the two first gears 3 drive the two first gears 3 to rotate in parallel. A first motor 26 is fixed to the bottom of the inner wall of the casing 1 through a motor base between the two first gears 3. The first motor 26 is electrically connected to an external power supply through a wire, and the second gear 14 is fixedly sleeved outside the output shaft of the first motor 26 through the mounting hole opened at the center.

[0039] When driving the two grinding discs 7 to rotate at the same time, the first motor 26 is connected to the power supply, so that the output shaft of the first motor 26 drives the second gear 14 to rotate, and the two first gears 3 that are simultaneously meshed with the second gear 14 rotate. The first gear 3 drives the grinding disc 7 to rotate through the insertion assembly, thus bringing convenience to the polishing process of relevant personnel.

[0040] It should be noted that the insertion assembly includes an insertion block 4 arranged above the first gear 3. The cross-shaped insertion block 4 is fixedly installed at the upper end of the movable column 25 where the first gear 3 is located, so that the movable column 25 drives the first gear 3 and the cross-shaped insertion block 4 to rotate at the same time. A socket 5 is arranged below the grinding disc 7, and a slot 27 is opened at the bottom of the socket 5. The shape of the slot 27 corresponds to that of the insertion block 4 and is also cross-shaped, and the grinding disc 7 is arranged on the top of the socket 5 through a disassembly and assembly component. The grinding disc 7 is installed and disassembled from the socket 5 through the disassembly and assembly component.

[0041] When installing the grinding disc 7, the socket 5 is driven to move through the displacement mechanism, so that the socket 5 drives the grinding disc 7 on the top to move downward in the vertical direction through the disassembly and assembly component, so that the socket 5 drives the cross-shaped slot 27 at the bottom to be clamped outside the insertion block 4 at the top end of the movable column 25. Through the clamping cooperation between the insertion block 4 and the slot 27, the socket 5 rotates along with the movable column 25, thereby driving the grinding disc 7 to rotate, making the installation and disassembly process of the grinding disc 7 more convenient.

[0042] In addition, a first magnetic block 6 is embedded at the top of the insertion block 4, and a second magnetic block 31 is embedded at the top of the inner wall of the slot 27. The magnetic poles of the opposite faces of the first magnetic block 6 and the second magnetic block 31 are opposite, and the first magnetic block 6 corresponds to the second magnetic block 31. Corresponding mounting grooves are provided at the top of the insertion block 4 and the top of the inner wall of the slot 27, and the first magnetic block 6 and the second magnetic block 31 are respectively fixedly embedded in the two mounting grooves. Since the magnetic poles of the first magnetic block 6 and the second magnetic block 31 are opposite, they will attract each other, thus ensuring the stability of the connection of the grinding disc 7 on the socket 5.

[0043] In addition, the disassembly and assembly component includes a connecting seat 23 fixedly installed on the outer wall of the circumference of the socket 5. A connecting hole 28 is circumferentially provided at the bottom near the edge of the grinding disc 7, and the connecting seat 23 corresponds to the connecting hole 28. A threaded through hole is provided in the inner cavity of the connecting seat 23. After the bolt passes through the threaded through hole, it is threadedly connected inside the connecting hole 28, thereby fixing the grinding disc 7. By removing the bolt, the grinding disc 7 can be disassembled, making the operation of the disassembly and assembly process of the grinding disc 7 more convenient.

[0044] Furthermore, the picking and placing component includes an annular seat 15 provided above the grinding disc 7. A cylinder 30 is embedded on the outer wall of the circumference near the bottom of the annular seat 15. A supporting plate 29 for clamping the bottom of the grinding disc 7 is provided at the movable end of the cylinder 30. The hollow aperture of the annular seat 15 is larger than the shape of the socket 5, and the cylinder barrel end of the cylinder 30 is fixedly arranged on the outer wall of the circumference of the annular seat 15 in sequence. The movable end of the cylinder 30 faces outward, and the movable end of the cylinder 30 is vertically fixed on the surface of the connecting plate member. A supporting plate 29 facing the center of the annular seat 15 is fixedly installed at the bottom of the connecting plate member, and the supporting plate 29 slides while being attached to the bottom of the annular seat 15.

[0045] When installing the grinding disc 7, the grinding disc 7 is fixed on the connecting seat 23 of the socket 5 through the connecting hole 28 at the bottom. Then, the solenoid valve of the air duct connected inside the cylinder 30 is opened, so that the movable end of the cylinder 30 drives the supporting plate 29 to move towards the center of the annular seat 15, and the supporting plate 29 slides while being attached to the lower surface of the annular seat 15. Then, the grinding disc 7 fixed on the socket 5 is placed inside the annular seat 15, so that the bottom of the grinding disc 7 is supported by the four supporting plates 29. Then, the position of the socket 5 is adjusted through the displacement mechanism, so that the slot 27 at the bottom of the socket 5 is clamped outside the insertion block 4. Then, the supporting plate 29 is driven by the cylinder 30 to move away from the bottom of the annular seat 15 again, and then the sample grinding process is carried out, making the operation of the installation and disassembly process of the grinding disc 7 more convenient.

[0046] The displacement mechanism includes a lead screw 11 rotatably arranged at the top inner wall of the housing 1. A bearing is embedded and installed at the top center position of the inner wall of the housing 1, and the upper end of the lead screw 11 is embedded and installed inside the bearing, so that the lead screw 11 rotates at the top center position of the inner wall of the housing 1. A motor cover 10 is fixedly installed vertically at the top center position of the housing 1, and a second motor 13 is fixedly embedded and installed inside the motor cover 10. The output shaft of the second motor 13 penetrates through the top of the housing 1 and extends into the inner cavity and is fixedly connected to the upper end of the lead screw 11. The second motor 13 is electrically connected to an external power supply through a wire. And the lead screw 11 is located between two processing grooves 8. An adjusting seat 12 is threadedly connected to the outside of the lead screw 11, and the adjusting seat 12 is connected to the lead screw 11 through a threaded through hole opened on the surface.

[0047] The adjusting seat 12 is connected to the outer wall of the annular seat 15. One ends of two connecting rods 16 are fixedly installed vertically on both sides of the outer wall of the adjusting seat 12, and the other ends of the two connecting rods 16 are respectively fixedly installed on the outer wall of the annular seat 15 vertically. When the lead screw 11 rotates, the adjusting seat 12 drives the two annular seats 15 to move respectively through the two connecting rods 16 at the same time, so that the heights of the two grinding discs 7 can be adjusted simultaneously. A support assembly for supporting the bottom of the lead screw 11 is arranged in the inner cavity of the housing 1.

[0048] When disassembling and assembling the grinding disc 7, the second motor 13 is connected to the power supply. The output shaft of the second motor 13 drives the lead screw 11 to rotate, so that the adjusting seat 12 threadedly connected to the outside of the lead screw 11 drives the two grinding discs 7 located inside the annular seats 15 to move simultaneously through the connecting rods 16 on both sides. The positions of the two grinding discs 7 are adjusted at the same time, thus making the operation during the disassembly and assembly process of the grinding disc 7 more convenient.

[0049] The support assembly includes a support seat 17 rotatably arranged at the bottom of the lead screw 11, and the bottom end of the lead screw 11 is rotatably arranged on the top of the support seat 17. One ends of support rods 18 are symmetrically and fixedly installed on the circumferential outer wall of the support seat 17, and the other ends of the support rods 18 are fixedly installed on the top inner wall of the housing 1. The support seat 17 is fixed to the bottom of the lead screw 11 through the support rods 18 on both sides of the top inner wall of the housing 1. A bearing is fixedly embedded and installed on the top of the support seat 17, and the bottom of the lead screw 11 is fixedly embedded and installed inside the bearing.

[0050] By rotatably supporting the bottom of the lead screw 11, the stability of the lead screw 11 during rotation is ensured, and further the accuracy of the position movement during the disassembly and assembly process of the grinding disc 7 is ensured.

[0051] A guiding assembly for preventing the picking and placing assembly from shifting is arranged in the inner cavity of the housing 1.

[0052] The guiding assembly includes a guiding rod 22 embedded in the inner cavity of the housing 1. Two mounting seats 20 are fixedly installed in parallel on the inner wall of the housing 1, and the two ends of the guiding rod 22 are respectively vertically fixed on the opposite surfaces of the two mounting seats 20. A guiding seat 21 is sleeved on the outer wall of the guiding rod 22, and the guiding seat 21 is connected to the annular seat 15.

[0053] Two mutually parallel guiding rods 22 are arranged on the outer periphery of the annular seat 15. Through the three-point limit of the two guiding rods 22 and a lead screw 11, the stability of the process of adjusting the position of the grinding disc 7 by the annular seat 15 is ensured. The guiding seat 21 is movably sleeved outside the guiding rod 22 through a through hole opened on the surface, so that the guiding seat 21 slides along the outer wall of the guiding rod 22. One end of a fixing rod 19 is fixedly installed vertically on the outer circumferential wall of the guiding seat 21, and the other end of the fixing rod 19 is fixed on the outer wall of the annular seat 15.

[0054] During the process of rotating the lead screw 11 to make the adjusting seat 12 connected by threads drive the annular seat 15 to move through the connecting rod 16, the annular seat 15 drives the guiding seat 21 to slide along the outer wall of the guiding rod 22 through the fixing rod 19. The stability of the moving direction of the annular seat 15 is ensured by the two guiding rods 22 parallel to the lead screw 11, avoiding the deviation of the position of the grinding disc, so as to ensure the accuracy of the position adjustment of the grinding disc 7.

[0055] The working principle of the sample preparation polishing machine of an electron microscope in this embodiment is as follows: When polishing the electron microscope embedded sample, the first motor 26 is connected to the power supply, so that the output shaft of the first motor 26 drives the second gear 14 to rotate, and the two first gears 3 that are simultaneously meshed with the second gear 14 rotate. Through the clamping fit of the insertion block 4 and the insertion slot 27, the plug-in seat 5 rotates along with the movable column 25, thereby driving the grinding disc 7 to rotate, so that the two grinding discs 7 with different mesh numbers rotate simultaneously. The sample is polished by the grinding discs 7 with different roughnesses, ensuring the smoothness and flatness of the sample surface.

[0056] When replacing the grinding disc 7, the second motor 13 is connected to the power supply, so that the output shaft of the second motor 13 drives the lead screw 11 to rotate. The adjusting seat 12 threadedly connected to the outside of the lead screw 11 drives the two grinding discs 7 located inside the annular seat 15 to move simultaneously through the connecting rods 16 on both sides. The grinding disc 7 moves to the processing groove 8 along with the annular seat 15. Then, the cylinder 30 moves the support plate 29 away from the bottom of the annular seat 15, takes out the plug-in seat 5 together with the grinding disc 7, and then removes the bolts on the connecting seat 23 to replace the grinding disc 7.

[0057] Then, place the grinding disc 7 fixed on the socket 5 inside the annular seat 15, such that the bottom of the grinding disc 7 is supported by four supporting plates 29. Then, adjust the direction of the output shaft of the second motor 13, drive the lead screw 11 to rotate through the second motor 13, such that the slot 27 at the bottom of the socket 5 is snap-fitted outside the plug 4. At the same time, the first magnet 6 and the second magnet 31 adsorb each other, such that the socket 5 drives the grinding disc 7 to be snap-fitted on the movable column 25.

[0058] After that, drive the supporting plate 29 to move away from the bottom of the annular seat 15 again through the cylinder 30. Then, move the annular seat 15 away from the grinding disc 7 through the rotating lead screw 11, such that the grinding disc 7 is seated on the movable column 25. After that, perform grinding processing through the rotating grinding disc 7.

[0059] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.

[0060] In addition, the terms "first", "second", "third", "fourth" 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", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0061] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium. It may be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, 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 circumstances.

[0062] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sample preparation and polishing machine for an electron microscope, comprising a housing (1), a water pump (2) being arranged on the top of the housing (1), characterized in that: A processing groove (8) is provided on the top of the casing (1); a linkage rotating assembly for driving two grinding discs (7) to rotate simultaneously is provided at the bottom of the inner cavity of the casing (1); an insertion assembly is provided between the linkage rotating assembly and the grinding discs (7); a pick-up and placement assembly for replacing the grinding discs (7) is provided in the inner cavity of the casing (1); and the pick-up and placement assembly corresponds to the grinding discs (7); and a displacement mechanism for adjusting the position of the pick-up and placement assembly is provided in the inner cavity of the casing (1).

2. The sample preparation and polishing machine for an electron microscope according to claim 1, characterized in that: The linked rotating assembly comprises two first gears (3) rotatably arranged at the bottom of the inner cavity of the housing (1); a second gear (14) is rotatably arranged at the bottom of the inner cavity of the housing (1), and the second gear (14) is meshed with the two first gears (3) at the same time.

3. The sample preparation and polishing machine for an electron microscope according to claim 2, characterized in that: The plug-in assembly comprises an insert block (4) arranged above the first gear (3), a plug-in seat (5) is arranged below the grinding disc (7), a slot (27) is provided at the bottom of the plug-in seat (5), and the grinding disc (7) is arranged on the top of the plug-in seat (5) through a disassembly assembly assembly.

4. The sample preparation and polishing machine for an electron microscope according to claim 3, characterized in that: A first magnetic block (6) is embedded in the top of the insert block (4), and a second magnetic block (31) is embedded in the top of the inner wall of the slot (27); the magnetic poles of the opposing surfaces of the first magnetic block (6) and the second magnetic block (31) are opposite, and the first magnetic block (6) corresponds to the second magnetic block (31).

5. The sample preparation and polishing machine for electron microscope according to claim 3, characterized in that: The disassembly and assembly assembly comprises a connection seat (23) fixedly mounted on the circumferential outer wall of the plug seat (5); a connection hole (28) is opened circumferentially at the bottom of the grinding disc (7) near the edge, and the connection seat (23) corresponds to the connection hole (28).

6. The sample preparation and polishing machine for electron microscope according to claim 1, characterized in that: The pick-and-place assembly comprises an annular seat (15) arranged above the grinding disc (7), a cylinder (30) being embedded on the circumferential outer wall of the annular seat (15) adjacent to the bottom, and a support plate (29) for clamping the bottom of the grinding disc (7) being arranged at the movable end of the cylinder (30).

7. The sample preparation and polishing machine for electron microscope according to claim 6, characterized in that: The displacement mechanism comprises a lead screw (11) rotatably arranged at the top of the inner wall of the housing (1), and the lead screw (11) is located between the two processing grooves (8), the external thread of the lead screw (11) is connected to an adjustment seat (12), and the adjustment seat (12) is connected to the outer wall of the annular seat (15), and the inner cavity of the housing (1) is provided with a support component for supporting the bottom of the lead screw (11).

8. The sample preparation and polishing machine for electron microscope according to claim 7, characterized in that: The support assembly comprises a support seat (17) rotatably arranged at the bottom of the lead screw (11), the bottom end of the lead screw (11) is rotatably arranged at the top of the support seat (17), one end of a support rod (18) is symmetrically fixedly mounted on the circumferential outer wall of the support seat (17), and the other end of the support rod (18) is fixedly mounted on the top of the inner wall of the housing (1).

9. The sample preparation and polishing machine for electron microscope according to claim 6, characterized in that: The inner cavity of the housing (1) is provided with a guide component for preventing the pick-and-place component from deflecting.

10. The sample preparation and polishing machine for electron microscope according to claim 9, characterized in that: The guide assembly comprises a guide rod (22) embedded in the inner cavity of the housing (1); the outer wall of the guide rod (22) is sleeved with a guide seat (21); and the guide seat (21) is connected to the annular seat (15).

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