Sample rotating device

Abstract

The utility model relates to the technical field of sample observation, in particular to a sample rotating device which comprises a base, a fixed table is arranged above the base, a circular groove is formed in the center of the top face of the fixed table, and a rotating shaft is fixedly connected to the center of the bottom face of a rotating table. A transmission assembly used for driving the rotating shaft to rotate is fixedly installed on the bottom face of the fixing table. A driving mechanism is fixedly mounted on the top surface of the base, the driving mechanism is used for driving the transmission assembly, the driving mechanism comprises a supporting assembly fixedly mounted on the top surface of the base, and a driving assembly is slidably mounted on the supporting assembly; the transmission assembly and the driving mechanism are arranged in a matched mode, so that the rotary table can be rotated in a manual mode and an automatic mode, flexible manual operation can be achieved when needed by combining the manual rotation mode and the electric rotation mode, meanwhile, the electric mode can be used when the rotation angle needs to be accurately controlled, and the operation is convenient. Therefore, the advantages of flexibility and accuracy are taken into account.

Description

Technical Field

[0001] The utility model relates to the technical field of sample observation, in particular to a sample rotating device. Background Art

[0002] A scanning electron microscope is a high-resolution microscope that uses a focused electron beam to scan the surface of a sample and obtain a high-resolution image of it. When using a scanning electron microscope, the sample is sometimes rotated to change its direction, so that the morphology and structure of the sample surface can be observed from different angles to obtain more comprehensive information.

[0003] Existing sample rotation devices usually include a rotating shaft, on the top of which is fixedly mounted a rotating platform for supporting and placing the sample, and the other end of the rotating shaft is provided with a driving device, which is generally a knob or a motor; a mounting fixture is provided on the rotating platform for fixing the sample to be observed on the rotating platform to ensure that the sample is positioned correctly and stably.

[0004] The existing sample rotating device still has the following deficiencies during use:

[0005] When a knob is used as the driving device, uneven rotation speed may occur during the process of driving the rotating platform to rotate continuously, which may cause image distortion and affect the imaging quality; when a motor is used as the driving device, it is difficult to fine-tune the angle, and it is difficult for the operator to flexibly adjust the sample rotation to a fixed observation angle. Utility Model Content

[0006] The purpose of the utility model is to provide a sample rotating device to solve the problems raised in the above background technology.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A sample rotating device comprises a base, a fixed platform is arranged above the base, a plurality of supporting rods are fixedly connected between the bottom surface of the fixed platform and the top surface of the base, a circular groove is opened at the center position of the top surface of the fixed platform, and a thrust bearing coaxial with the circular groove is fixedly installed on the top surface of the fixed platform, a rotating platform coaxial with the thrust bearing is fixedly installed on the top surface of the thrust bearing, and a rotating shaft is fixedly connected to the center position of the bottom surface of the rotating platform;

[0009] A transmission assembly for driving the rotating shaft to rotate is fixedly installed on the bottom surface of the fixed platform;

[0010] A driving mechanism is fixedly mounted on the top surface of the base, and the driving mechanism is used to drive the transmission assembly. The driving mechanism comprises a supporting assembly fixedly mounted on the top surface of the base, and a driving assembly is slidably mounted on the supporting assembly.

[0011] Furthermore, the transmission assembly includes a suspension seat and a worm wheel fixedly mounted at the bottom end of the rotating shaft, two symmetrically arranged suspension seats are fixedly mounted on the bottom surface of the fixed platform, an optical axis is rotatably mounted between the two suspension seats, and a worm meshing with the worm wheel is coaxially fixedly mounted on the periphery of the optical axis;

[0012] The end of the optical axis close to the driving mechanism rotates through the hanging seat at the corresponding position, and a clamp is fixedly installed thereon, and a square groove is provided on the side of the clamp away from the optical axis;

[0013] One end of the optical axis away from the driving mechanism rotates and passes through a hanging seat at a corresponding position, and a knob is fixedly installed thereon.

[0014] Furthermore, the support assembly includes a slide rod, and two parallel slide rods are fixedly connected to the outer side surface of the hanger near the clamp head at the bottom position, and a support is fixedly connected between one end of the slide rod away from the hanger and the top surface of the base;

[0015] A mounting plate is provided between the two slide bars, and protrusions are fixedly installed on both sides of the mounting plate. The two protrusions are respectively connected to the two slide bars in a through-type sliding manner. The driving assembly is fixedly installed on the top surface of the mounting plate, and a connecting seat is fixedly installed on the bottom surface of the mounting plate.

[0016] A connecting plate is fixedly connected between the two pillars, and an electric telescopic rod aligned with the connecting seat is fixedly installed on the outer surface of the connecting plate. The telescopic end of the electric telescopic rod slides through the connecting plate and is fixedly connected to the connecting seat.

[0017] Furthermore, the driving assembly includes a motor fixedly mounted on the top surface of the mounting plate, the motor is coaxially arranged with the optical axis, the output shaft end of the motor is fixedly connected with an elastic connecting piece, and the end of the elastic connecting piece away from the motor is fixedly mounted with a block used in conjunction with the square groove.

[0018] Further, the elastic connecting member comprises a hollow column coaxially fixedly mounted on the end of the motor output shaft, a connecting rod is slidably inserted into the end of the hollow column away from the motor, the block is fixedly mounted on the end of the connecting rod away from the motor, a slider is fixedly mounted on the end of the connecting rod located inside the hollow column, the periphery of the slider is in sliding contact with the inner wall of the hollow column, and a spring is fixedly mounted between the slider and the inner end surface of the hollow column close to the motor;

[0019] The periphery of the hollow column is provided with two limit grooves symmetrically arranged about the axis of the hollow column, and the periphery of the sliding block is fixedly connected with two symmetrically arranged limit blocks, and the ends of the two limit blocks away from the sliding block are respectively slidably clamped in the two limit grooves.

[0020] Beneficial effects of the utility model:

[0021] The utility model adopts the coordinated arrangement of the transmission component and the driving mechanism, so that the rotating table can be rotated in both manual and automatic modes in the utility model. The combination of manual and electric rotation modes can be flexibly operated manually when needed, and the electric mode can be used when the rotation angle needs to be accurately controlled, thereby taking into account the advantages of flexibility and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a three-dimensional schematic diagram of the connection relationship between the rotating table and the rotating shaft in the utility model;

[0025] Figure 3 yes Figure 1 A three-dimensional schematic diagram from another angle;

[0026] Figure 4 yes Figure 3 A magnified view of part A;

[0027] Figure 5 yes Figure 4 A magnified view of part B;

[0028] The reference numerals are as follows:

[0029] 1-base, 2-fixed table, 4-rotating table, 5-thrust bearing, 6-rotating shaft, 7-worm gear, 8-worm, 9-optical axis, 10-suspension seat, 11-knob, 12-round groove, 13-support rod, 14-driving mechanism, 15-clamp, 16-square groove, 17-slide bar, 18-pillar, 19-electric telescopic rod, 20-connecting plate, 21-mounting plate, 22-bump, 23-motor, 24-block, 25-connecting rod, 26-hollow column, 27-limiting groove, 28-spring, 29-limiting block, 30-slider. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1:

[0032] See also Figures 1 to 5 In an embodiment of the utility model, a sample rotating device comprises a base 1, a fixed platform 2 is arranged above the base 1, a plurality of supporting rods 13 are fixedly connected between the bottom surface of the fixed platform 2 and the top surface of the base 1, a circular groove 12 is opened at the center position of the top surface of the fixed platform 2, and a thrust bearing 5 coaxial with the circular groove 12 is fixedly installed on the top surface of the fixed platform 2, a rotating platform 4 coaxial with the thrust bearing 5 is fixedly installed on the top surface of the thrust bearing 5, and a rotating shaft 6 is fixedly connected to the center position of the bottom surface of the rotating platform 4;

[0033] A transmission assembly for driving the rotating shaft 6 to rotate is fixedly installed on the bottom surface of the fixed platform 2;

[0034] A driving mechanism 14 is fixedly mounted on the top surface of the base 1 . The driving mechanism 14 is used to drive the transmission assembly. The driving mechanism 14 includes a supporting assembly fixedly mounted on the top surface of the base 1 , and a driving assembly is slidably mounted on the supporting assembly.

[0035] The transmission assembly includes a suspension seat 10 and a worm wheel 7 fixedly mounted at the bottom end of the rotating shaft 6. Two symmetrical suspension seats 10 are fixedly mounted on the bottom surface of the fixed platform 2. An optical axis 9 is rotatably mounted between the two suspension seats 10. A worm 8 meshing with the worm wheel 7 is coaxially fixedly mounted on the periphery of the optical axis 9.

[0036] One end of the optical axis 9 close to the driving mechanism 14 rotates through the corresponding position of the hanging seat 10, and is fixedly installed with a clamp 15, and a square groove 16 is opened on the side of the clamp 15 away from the optical axis 9;

[0037] One end of the optical axis 9 away from the driving mechanism 14 rotates through the hanging seat 10 at the corresponding position, and a knob 11 is fixedly installed thereon.

[0038] The support assembly includes a slide bar 17. Two parallel slide bars 17 are fixedly connected to the outer surface of the hanging seat 10 near the clamping head 15 at the bottom position. A support 18 is fixedly connected between the end of the slide bar 17 away from the hanging seat 10 and the top surface of the base 1.

[0039] A mounting plate 21 is provided between the two slide bars 17, and protrusions 22 are fixedly installed on both sides of the mounting plate 21. The two protrusions 22 are respectively connected to the two slide bars 17 in a through-type sliding manner. A driving assembly is fixedly installed on the top surface of the mounting plate 21, and a connecting seat is fixedly installed on the bottom surface of the mounting plate 21.

[0040] A connecting plate 20 is fixedly connected between the two pillars 18, and an electric telescopic rod 19 aligned with the connecting seat is fixedly installed on the outer surface of the connecting plate 20. The telescopic end of the electric telescopic rod 19 slides through the connecting plate 20 and is fixedly connected to the connecting seat.

[0041] Among them, the driving assembly includes a motor 23 fixedly mounted on the top surface of the mounting plate 21, the motor 23 is coaxially arranged with the optical axis 9, the output shaft end of the motor 23 is fixedly connected with an elastic connecting piece, and the end of the elastic connecting piece away from the motor 23 is fixedly mounted with a clamping block 24 used in conjunction with the square groove 16.

[0042] When the utility model is in use:

[0043] 1. Manual rotation mode;

[0044] At this time, the block 24 in the driving assembly is in a separated state from the square slot 16; the user manually drives the optical axis 9 to rotate through the knob 11, the optical axis 9 drives the worm 8 to rotate, and the worm 8 drives the rotating shaft 6 to rotate through the worm gear 7, thereby realizing the manual rotation operation of the rotating table 4.

[0045] 2. Automatic rotation mode;

[0046] Start the electric telescopic rod 19, and drive the mounting plate 21 to slide on the two slide bars 17 toward the clamping head 15 through the connecting seat on the bottom surface of the mounting plate 21, until the clamping block 24 is clamped into the square groove 16 of the clamping head 15, and then start the motor 23. The motor 23 drives the optical axis 9 to rotate through the matching clamping connection between the clamping block 24 and the square groove 16, thereby driving the rotation of the rotating shaft 6 to realize the automatic rotation of the rotating table 4; when it is necessary to switch to the manual rotation mode, control the electric telescopic rod 19 to retract so that the clamping block 24 is separated from the square groove 16.

[0047] In the utility model, the worm gear structure is used to drive the rotating platform 4 to rotate, and the good self-locking property of the worm gear can ensure the stability of the rotating platform 4 when it is in a stationary state and a rotating state;

[0048] Through the coordinated arrangement of the transmission assembly and the drive mechanism 14, the utility model can rotate the rotating table 4 manually and automatically. The combination of manual and electric rotation methods can be flexibly operated manually when needed, and the electric method can be used when the rotation angle needs to be accurately controlled, thereby taking into account the advantages of flexibility and precision. The manual and electric rotation methods can give full play to their respective advantages and make up for their respective disadvantages, providing a more flexible, accurate and efficient option for rotating samples when using a scanning electron microscope.

[0049] The driving mechanism 14 realizes rapid switching between manual and automatic modes through the coordinated arrangement of the supporting assembly and the driving assembly, thereby improving the convenience of use of the device.

[0050] Embodiment 2:

[0051] See also Figure 5 On the basis of Example 1, the elastic connecting member includes a hollow column 26 coaxially fixedly mounted on the output shaft end of the motor 23, a connecting rod 25 is slidably inserted at one end of the hollow column 26 away from the motor 23, a clamping block 24 is fixedly mounted at one end of the connecting rod 25 away from the motor 23, a slider 30 is fixedly mounted at one end of the connecting rod 25 located inside the hollow column 26, the periphery of the slider 30 is in sliding contact with the inner wall of the hollow column 26, and a spring 28 is fixedly mounted between the slider 30 and the inner end surface of the hollow column 26 close to the motor 23;

[0052] Two limit grooves 27 symmetrically arranged about the axis of the hollow column 26 are opened on the periphery of the hollow column 26, and two symmetrically arranged limit blocks 29 are fixedly connected to the periphery of the slider 30. The ends of the two limit blocks 29 away from the slider 30 are slidably clamped in the two limit grooves 27 respectively.

[0053] In the process of engaging the block 24 with the square groove 16, the square groove 16 and the block 24 are generally in a misaligned state. The setting of the elastic connecting piece in the utility model is used to solve the problem of inconvenience in docking caused by the misalignment of the square groove 16 and the block 24; specifically, as the block 24 approaches the clamping head 15, the block 24 will gradually be squeezed and contacted with the clamping head 15. At this time, the end of the connecting rod 25 away from the block 24 will extend a distance into the hollow column 26, and then the motor 23 is started to drive the block 24 to rotate. When the block 24 rotates to align with the square groove 16, the block 24 will be pushed into the square groove 16 under the elastic force of the spring 28, thereby completing the automatic docking of the block 24 and the square groove 16. Therefore, in the utility model, through the setting of the elastic connecting piece, there is no need to consider the alignment problem of the block 24 and the square groove 16 when switching the rotation mode, thereby further improving the operational convenience of the utility model.

[0054] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sample rotating device, comprising a base (1), characterized in that: A fixed platform (2) is arranged above the base (1); a plurality of support rods (13) are fixedly connected between the bottom surface of the fixed platform (2) and the top surface of the base (1); a circular groove (12) is provided at the center of the top surface of the fixed platform (2); a thrust bearing (5) coaxial with the circular groove (12) is fixedly mounted on the top surface of the fixed platform (2); a rotating platform (4) coaxial with the thrust bearing (5) is fixedly mounted on the top surface of the thrust bearing (5); and a rotating shaft (6) is fixedly connected at the center of the bottom surface of the rotating platform (4); A transmission assembly for driving the rotating shaft (6) to rotate is fixedly mounted on the bottom surface of the fixed platform (2); A driving mechanism (14) is fixedly mounted on the top surface of the base (1), the driving mechanism (14) being used to drive a transmission component, the driving mechanism (14) comprising a supporting component fixedly mounted on the top surface of the base (1), the driving component being slidably mounted on the supporting component.

2. A sample rotating device according to claim 1, characterized in that: The transmission assembly comprises a suspension seat (10) and a worm wheel (7) fixedly mounted on the bottom end of the rotating shaft (6); two symmetrically arranged suspension seats (10) are fixedly mounted on the bottom surface of the fixed platform (2); an optical axis (9) is rotatably mounted between the two suspension seats (10); and a worm (8) meshing with the worm wheel (7) is coaxially fixedly mounted on the periphery of the optical axis (9); One end of the optical axis (9) close to the driving mechanism (14) rotates through the hanging seat (10) at the corresponding position and is fixedly mounted with a clamp (15), wherein a square groove (16) is formed on a side of the clamp (15) away from the optical axis (9); One end of the optical axis (9) away from the driving mechanism (14) rotates through a hanging seat (10) at a corresponding position, and a knob (11) is fixedly mounted thereon.

3. A sample rotating device according to claim 2, characterized in that: The support assembly comprises a slide bar (17), two parallel slide bars (17) are fixedly connected at the bottom of the outer surface of the hanging seat (10) close to the clamping head (15), and a support column (18) is fixedly connected between the end of the slide bar (17) away from the hanging seat (10) and the top surface of the base (1); A mounting plate (21) is provided between the two slide bars (17), protrusions (22) are fixedly mounted on both sides of the mounting plate (21), the two protrusions (22) are respectively connected to the two slide bars (17) in a through-type sliding manner, the driving assembly is fixedly mounted on the top surface of the mounting plate (21), and a connecting seat is fixedly mounted on the bottom surface of the mounting plate (21); A connecting plate (20) is fixedly connected between the two pillars (18); an electric telescopic rod (19) is fixedly mounted on the outer surface of the connecting plate (20) and is aligned with the connecting seat; the telescopic end of the electric telescopic rod (19) slides through the connecting plate (20) and is fixedly connected to the connecting seat.

4. A sample rotating device according to claim 3, characterized in that: The drive assembly comprises a motor (23) fixedly mounted on the top surface of the mounting plate (21), the motor (23) being coaxially arranged with the optical axis (9), an output shaft end of the motor (23) being fixedly connected to an elastic connecting piece, and an end of the elastic connecting piece away from the motor (23) being fixedly mounted with a clamping block (24) for use with the square groove (16).

5. A sample rotating device according to claim 4, characterized in that: The elastic connecting member comprises a hollow column (26) coaxially fixedly mounted on the end of the output shaft of the motor (23); a connecting rod (25) is slidably inserted into the end of the hollow column (26) away from the motor (23); the block (24) is fixedly mounted on the end of the connecting rod (25) away from the motor (23); a sliding block (30) is fixedly mounted on the end of the connecting rod (25) located inside the hollow column (26); the periphery of the sliding block (30) is in sliding contact with the inner wall of the hollow column (26); and a spring (28) is fixedly mounted between the sliding block (30) and the inner end surface of the hollow column (26) close to the motor (23); Two limit grooves (27) are symmetrically arranged about the axis of the hollow column (26) on the periphery of the hollow column (26), and two symmetrically arranged limit blocks (29) are fixedly connected to the periphery of the sliding block (30), and the ends of the two limit blocks (29) away from the sliding block (30) are respectively slidably clamped in the two limit grooves (27).

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