Rock slice high-precision polishing machine and using method thereof

Abstract

The invention relates to the field of rock slice manufacturing in oil-gas exploration experiments, in particular to a rock slice high-precision polishing machine and a using method thereof. The problems that the product quality cannot be guaranteed, the efficiency is low and personnel are prone to being injured due to the fact that existing rock slices are manually polished are mainly solved. The stand column (2) is connected with a sample driving mechanism for driving the glass carrying table (3) to rotate; the stand column (2) is connected with a polishing mechanism capable of driving the polishing wheel (19) to rotate and ascend and descend, and the polishing mechanism is provided with a laser ranging unit. The device further comprises an abrasive material supply mechanism, the abrasive material supply mechanism comprises an abrasive material storage tank (31) and an abrasive material circulating pump (32), and the abrasive material circulating pump (32) is connected with a second abrasive material pipeline (34). The high-precision polishing machine for the rock slices is high in polishing speed, capable of polishing a plurality of slices at a time, high in polishing precision, capable of achieving consistent quality of the rock slices in the same batch, safe in operation process and capable of saving manpower.

Description

Technical Field

[0001] This invention relates to the field of rock thin section preparation in oil and gas exploration experiments, specifically a high-precision rock thin section polishing machine and its usage method. Background Technology

[0002] As my country's oil exploration shifts from conventional to unconventional methods, the research demand for special rock thin sections is increasing year by year, leading to a significant increase in the workload of thin section production. Special thin sections (i.e., polished thin sections) have become a major part of the thin section production industry. Currently, rock thin section processing is mostly done manually by workers using mechanical methods, which has the following drawbacks: First, different people achieve different polishing results, easily resulting in significant differences in quality within the same batch of products; second, excessive workload leads to backlogs, resulting in low efficiency for manual processing; third, the high speed of polishing machines means that even with protective gloves, thin sections can easily fly out and injure workers.

[0003] Currently known polishing machines have several drawbacks. Some cannot polish multiple rock slabs simultaneously, resulting in low polishing efficiency; others cannot adjust the polishing pressure on the rock slabs or detect the polishing volume, leading to low polishing precision; still others cannot precisely control the abrasive supply, and the abrasive cannot be effectively and evenly distributed on the rock slabs; and some cannot scrape the abrasive into the abrasive storage tank, making the abrasive inconvenient to reuse. Therefore, there is an urgent need for a polishing machine that can solve these problems. Summary of the Invention

[0004] To overcome the shortcomings of existing rock thin-slab polishing methods, such as low polishing precision, low efficiency, and non-reusable abrasive, this invention provides a high-precision rock thin-slab polishing machine. This high-precision rock thin-slab polishing machine has a fast polishing speed, high polishing precision, and can polish multiple thin slabs at once, ensuring consistent quality of rock thin slabs in the same batch, and the abrasive can be reused.

[0005] The technical solution of the present invention is: a high-precision polishing machine for thin rock sections, comprising a column, a glass stage, and a polishing wheel. The column is fixed on a base and is located at the center of the glass stage. A sample driving mechanism for driving the glass stage to rotate is connected to the column. A polishing mechanism for driving the polishing wheel to rotate and move up and down is connected to the column. A laser ranging unit is provided on the polishing mechanism.

[0006] It also includes an abrasive supply mechanism, which includes an abrasive storage tank. The abrasive storage tank is connected to an abrasive circulation pump through a first abrasive pipe. A second abrasive pipe is connected to the abrasive circulation pump, and the other end of the second abrasive pipe is located above the polishing wheel.

[0007] Furthermore, the polishing mechanism includes a support, which includes a top plate and a bottom plate. The top plate and the bottom plate are connected by a vertical plate. The vertical plate is fixed on a column. A vertical guide column is provided between the top plate and the bottom plate. A guide block is slidably connected to the guide column. A polishing motor is connected to the guide block via a polishing motor seat. The output shaft of the polishing motor is connected to a polishing wheel. A polishing disc is connected to the bottom of the polishing wheel.

[0008] Furthermore, the polishing wheel has a polishing wheel frame at its outer edge, a polishing wheel through-hole on its surface, and the polishing disc is bonded to the bottom of the polishing wheel, with a through hole corresponding to the through-hole on the polishing disc.

[0009] Furthermore, the laser ranging unit includes a first laser ranging unit and a second laser ranging unit. The first laser ranging unit is fixed on the side wall of the bracket base plate corresponding to the polishing wheel and is used to measure the height of the abrasive on the upper part of the polishing wheel. The second laser ranging unit is fixed on the bottom of the guide block and is used to measure the distance between the guide block and the upper surface of the bracket base plate.

[0010] Furthermore, a pressure sensing unit is fixed at the bottom of the polishing motor base, and a height-adjustable bolt C is provided on the support base plate corresponding to the pressure sensing unit. The pressure sensing unit is used to measure the pressure of the polishing motor base on the bolt C, thereby measuring the pressure of the polishing disc on the rock sheet.

[0011] Furthermore, a hydraulic telescopic unit is fixed above the bracket, and the output end of the hydraulic telescopic unit is connected to the polishing motor base via a soft steel cable.

[0012] Furthermore, a fixing ring is provided on the lower outer side of the guide post, the fixing ring is fixed to the base plate of the bracket, and bolt B is connected to the side wall of the fixing ring. Bolt B is used to tighten the guide post; the upper end of the guide post is connected to the top plate of the bracket.

[0013] Furthermore, the sample driving mechanism includes a drive motor, the output shaft of which is connected to a second gear, which meshes with a first gear, and the first gear is fixed on the upper end of the glass stage.

[0014] Furthermore, the upper surface of the glass stage is provided with several grooves, and glass slides are placed in the grooves, with rock samples attached to the glass slides.

[0015] Furthermore, several rubber soft scraper fixing frames are uniformly fixed on the outer circumference of the glass stage. The rubber soft scraper is fixed to the rubber soft scraper fixing frame by bolt A, and the lower surface of the rubber soft scraper is in contact with the upper surface of the base.

[0016] Furthermore, the base is a box with several openings on its upper surface. The abrasive storage tank is located inside the box, and the openings correspond to the upper openings of the abrasive storage tank.

[0017] Furthermore, it also includes a control unit, which is fixed to the top of the column by a control unit mounting plate. The control unit receives signals from the first laser ranging unit, the pressure sensing unit, and the second laser ranging unit, and controls the drive motor, the hydraulic telescopic unit, the polishing motor, and the abrasive circulation pump. The control unit is equipped with a display screen.

[0018] A method of using the aforementioned high-precision rock thin-section polishing machine includes the following steps:

[0019] S1. Place the rock slice on the glass slide, and then place the glass slide inside the groove of the glass stage. Control the hydraulic telescopic unit through the control unit to drive the soft steel cable to move down. The polishing motor and polishing wheel move down under the action of gravity, and the polishing disc moves down to contact the rock slice.

[0020] S2. The abrasive circulation pump is started by the control unit to draw and transfer the abrasive in the abrasive storage tank to the top of the polishing wheel. The abrasive falls onto the rock sheet from the polishing wheel opening.

[0021] S3. The polishing motor is started by the control unit. The polishing motor drives the polishing wheel and polishing disc to rotate and polish the thin rock slices.

[0022] S4. During polishing, the abrasive falls onto the top of the base. As the glass stage rotates, it drives the rubber scraper to rotate. The rubber scraper scrapes the abrasive from the top of the base into the inlet, and then into the abrasive storage tank.

[0023] Furthermore, in step S1, rotating the adjusting bolt C lifts the pressure sensing unit, causing the polishing disc to move upward, thereby adjusting the polishing amount, and displaying the polishing amount on the display screen of the control unit.

[0024] Furthermore, in step S2, the first laser ranging unit detects the abrasive height above the polishing wheel. When the abrasive height is higher than the set value, the control unit controls the abrasive circulation pump to stop. When the abrasive height is lower than the set value, the abrasive circulation pump starts.

[0025] Furthermore, in step S3, the second laser ranging unit measures the longitudinal distance traveled by the polishing wheel and displays the result on the display screen of the control unit.

[0026] The present invention has the following beneficial effects:

[0027] (1) The present invention is equipped with a polishing mechanism and a glass stage. The polishing speed of the polishing plate is fast. By placing multiple glass slides containing rock slices inside the groove of the glass stage, multiple slices can be polished at one time. The polishing precision is high, and the quality of rock slices in the same batch can be consistent. The operation process is safe and saves manpower.

[0028] (2) The present invention is provided with a pressure sensing unit and a second laser ranging unit. The pressure sensing unit can measure the pressure it receives, thereby making it easier for the control unit to determine the polishing pressure of the polishing disc on the rock sheet. The second laser ranging unit can measure the distance between itself and the bottom inner wall of the support, thereby making it easier for the control unit to determine the feed amount of the polishing disc on the rock sheet based on the value change of the second laser ranging unit, and thus determine the polishing amount.

[0029] (3) The present invention provides an abrasive circulation pump to transport the abrasive in the abrasive storage tank into the inside of the polishing wheel frame. The first laser ranging unit can measure the height of the abrasive inside the polishing wheel frame. When the height is higher than the set value, the abrasive circulation pump stops working. When the abrasive is lower than the set value, the abrasive circulation pump starts working. This ensures that the abrasive inside the second baffle is in a suitable amount, so that abrasive can be continuously added when polishing the rock sheet. At the same time, it can avoid the excessive amount of abrasive inside the polishing wheel frame causing too high polishing pressure on the rock sheet. Meanwhile, the abrasive can directly reach the rock sheet through the polishing wheel opening, and the abrasive is evenly distributed on the rock sheet.

[0030] (4) By providing a rubber soft scraper, the abrasive on the top of the base can be scraped into the inlet, and thus enter the abrasive storage tank through the inlet, so that the abrasive can be reused. At the same time, the fixing of the rubber soft scraper can be released by rotating the bolt in the opposite direction, so that the rubber soft scraper can be replaced easily.

[0031] (5) The polishing process of this polishing machine is fully automated, requiring no operator intervention, ensuring safe operation and avoiding work-related injuries. Attached Figure Description

[0032] Figure 1 This is a perspective view of the present invention;

[0033] Figure 2 This is a schematic diagram of the glass stage.

[0034] Figure 3 This is a schematic diagram of the polishing mechanism;

[0035] Figure 4 A 3D view of the polishing wheel;

[0036] Figure 5 for Figure 4 View from the center F direction;

[0037] Figure 6 for Figure 3 Enlarged view of point A in the middle

[0038] Figure 7 This is the front view of the present invention;

[0039] Figure 8 This is the front view of the polishing mechanism;

[0040] Figure 9 for Figure 7 A schematic diagram at point B in the middle.

[0041] In the diagram, 1-base, 2-column, 3-glass stage, 4-first gear, 5-groove, 6-rubber scraper fixing frame, 7-bolt A, 8-rubber scraper, 9-drive motor fixing plate, 10-drive motor, 11-second gear, 12-base upper frame, 13-port, 14-bracket, 15-hydraulic telescopic unit, 16-soft steel cable, 17-polishing motor base, 18-polishing motor, 19-polishing wheel, 20-polishing wheel port, 21-polishing wheel frame, 22-polishing disc, 23-first laser ranging unit, 24-fixing ring, 25-bolt B, 26-guide post, 27-guide block, 28-pressure sensing unit, 29-bolt C, 30-second laser ranging unit, 31-abrasive storage tank, 32-abrasive circulation pump, 33-first abrasive pipe, 34-second abrasive pipe, 35-control unit fixing plate, 36-control unit. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", and "bottom" are based on the orientation or positional relationship shown in the accompanying drawings. They are intended only to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Depend on Figures 1 to 8As shown, a high-precision polishing machine for thin rock sections includes a column 2, a glass stage 3, and a polishing wheel 19. The column 2 is fixed on a base 1, which can be a box structure. An upper frame 12 is connected to the upper edge of the base 1, which shields the abrasive on the base 1 to prevent it from spilling out. Several openings 13 are formed on the upper surface of the box, and an abrasive storage tank 31 is located inside the box, with the openings 13 corresponding to the upper openings of the abrasive storage tank 31. The column 2 is located at the center of the glass stage 3, and a sample driving mechanism is connected to the column 2, which can rotate the glass stage 3. A polishing mechanism is also connected to the column 2, which can rotate and raise / lower the polishing wheel 19. The polishing mechanism can adjust the polishing amount by raising and lowering the polishing wheel 19. A polishing disc 22 is attached to the bottom surface of the polishing wheel 19, and the polishing disc 22 polishes the sample when the polishing wheel 19 rotates. The sample driving mechanism includes a drive motor 10, which is fixed to the column 2 by a drive motor fixing plate 9. The output shaft of the drive motor 10 is vertically downward, and the end of the output shaft is connected to a second gear 11. The second gear 11 meshes with a first gear 4, and the first gear 4 is fixed to the upper end of the glass stage 3. After the drive motor 10 is started, it drives the glass stage 3 to rotate through the second gear 11 and the first gear 4.

[0045] The upper surface of the glass stage 3 is provided with several grooves 5, see Figure 2 The grooves 5 can be arranged circumferentially, and the number of grooves 5 is determined according to the size of the stage 3. A glass slide is placed inside each groove 5, and a rock sample is attached to the slide. Several rubber scraper fixing frames 6 are evenly fixed on the outer circumference of the stage 3. Each rubber scraper fixing frame 6 is fixed with a rubber scraper 8 by bolts A7, and the lower surface of the rubber scraper 8 contacts the upper surface of the base 1. Since the upper surface of the base 1 has an opening 13, when the stage 3 rotates, it drives the rubber scraper 8 to rotate, scraping the abrasive on the top of the base 1 into the opening 13, thus entering the abrasive storage tank 31 inside the base 1, preventing abrasive accumulation on the surface of the base 1.

[0046] The polishing mechanism includes a support 14, see Figure 3The support frame 14 includes a top plate and a bottom plate, which are connected by a vertical plate to form a sideways U-shaped structure. The vertical plate of the support frame 14 is fixed to the column 2, or the support frame and column 2 can be integrated. A vertical guide post 26 is provided between the top plate and the bottom plate. The upper end of the guide post 26 is connected to the top plate, which can have a circular hole through which the guide post 26 passes. A fixing ring 24 is provided on the lower end of the guide post 26, which is fixed to the bottom plate. A bolt B25 is connected to the side wall of the fixing ring 24. When the bolt B25 is tightened, it can press against the guide post 26, thus fixing the guide post 26. During installation, the guide post 26 can be passed through the top plate from top to bottom, so that the lower end is inserted into the fixing ring 24, and then the bolt B25 is tightened. Guide blocks 27 are slidably connected to the guide post 26. To maintain stability, there can be two guide posts 26, each with two guide blocks 27 connected to it. A polishing motor base 17 is fixed on the guide block 27, and a polishing motor 18 is fixed on the polishing motor base 17. The output shaft of the polishing motor 18 is vertically downward, and the end of the output shaft is connected to a polishing wheel 19.

[0047] The polishing wheel 19 has a polishing wheel frame 21 at its outer edge. Figure 4 and Figure 5 The polishing wheel 19 has a polishing wheel opening 20 at its edge. The polishing disc 22 is attached to the bottom of the polishing wheel 19, and the opening 20 is located outside the circumference of the polishing disc 22. The polishing wheel frame 21 encloses the periphery of the polishing wheel 19, which prevents abrasive from splashing outwards during polishing. The abrasive can fall through the opening 20 and eventually land on the rock sheet, where it is polished by the polishing disc 22.

[0048] The pressure sensing unit 28 is fixed at the bottom of the polishing motor base 17. Figure 6 The support base plate has a height-adjustable bolt C29 corresponding to the pressure sensing unit 28. By adjusting the height of bolt C29, the polishing motor base 17 can be lifted upwards, thereby adjusting the polishing amount of the polishing disc 22 on the rock sheet. The pressure sensing unit 28 is electrically connected to the control unit 36 ​​and can measure the pressure of the polishing motor base 17 on the bolt C29, thereby measuring the pressure of the polishing disc 22 on the rock sheet.

[0049] The polishing mechanism is also equipped with a laser ranging unit, see Figure 3 , Figure 7 and Figure 8The laser ranging unit includes a first laser ranging unit 23 and a second laser ranging unit 30. The first laser ranging unit 23 is fixed on the side wall of the support base plate corresponding to the polishing wheel 19, and can measure the distance between itself and the polishing wheel 19 or the abrasive on the top of the polishing wheel 19, thereby determining the height of the abrasive. The second laser ranging unit 30 is fixed to the bottom of the guide block 27, opposite to the support base plate, and is used to measure the distance between the guide block 27 and the upper surface of the support base plate, thereby measuring the travel distance of the polishing wheel. Both the first laser ranging unit 23 and the second laser ranging unit 30 are electrically connected to the control unit 36, and the measured values ​​are transmitted to the control unit 36 ​​and displayed on the display screen.

[0050] The hydraulic telescopic unit 15 is fixed above the bracket 14. Figure 3 The output end of the 36-phase hydraulic telescopic unit 15 of the control unit is connected to the polishing motor base 17 through the soft steel cable 16. The hydraulic telescopic unit 15 is a hydraulic cylinder that can convert hydraulic energy into kinetic energy, drive the soft steel cable 16 to move up and down, thereby driving the polishing motor base 17, polishing motor 18 and polishing wheel 19 to move up and down.

[0051] The polishing machine also includes an abrasive supply mechanism for supplying abrasive to the polishing unit and for recycling the abrasive. The abrasive supply mechanism includes an abrasive storage tank 31, see... Figure 7 The abrasive storage tank 31 is placed inside the housing of the base 1. The top of the abrasive storage tank 31 is open, and the opening is opposite to the through-hole 13 on the top of the base 1, so that residual abrasive after grinding can re-enter the abrasive storage tank 31. An abrasive circulation pump 32 is fixed below the top plate of the base 1. Figure 9 The abrasive storage tank 31 is connected to the abrasive circulation pump 32 through the first abrasive pipe 33. The abrasive circulation pump 32 is connected to the second abrasive pipe 34. The other end of the second abrasive pipe 34 is located above the polishing wheel 19. After the abrasive circulation pump 32 is started, it can transport the abrasive through the first abrasive pipe 33 and the second abrasive pipe 34 to the polishing wheel 19.

[0052] The polishing machine also includes a control unit 36, which is fixed to the top of the column 2 via a control unit mounting plate 35. The control unit 36 ​​receives signals from the first laser ranging unit 23, the pressure sensing unit 28, and the second laser ranging unit 30, and controls the drive motor 10, the hydraulic telescopic unit 15, the polishing motor 18, and the abrasive circulation pump 32. The control unit 36 ​​is equipped with a display screen that can display the polishing amount and the pressure during polishing.

[0053] Before using this high-precision rock thin-section polishing machine, check for any issues that might affect its operation. Place the rock thin section on a glass slide, then place the slide inside the groove 5 of the stage 3. Activate the hydraulic telescopic unit 15 to move the flexible steel cable 16 downwards. The polishing motor 18 and polishing wheel 19 move downwards under gravity, and the polishing disc 22 moves downwards to contact the rock thin section. When it is necessary to adjust the polishing amount, rotate the bolt C29 to lift the pressure sensing unit 28, which will move the polishing disc 22 upwards, thereby adjusting the polishing amount. After the polishing motor 18 starts, it drives the polishing disc 22 to rotate and polish the rock slab. At the same time, the abrasive circulation pump 32 draws the abrasive from the abrasive storage tank 31 and transfers it to the top of the polishing wheel 19. The abrasive falls onto the rock slab from the polishing wheel opening 20, thus polishing the rock slab. The abrasive falls onto the top of the base 1 during polishing. When the glass stage 3 rotates, it drives the rubber soft scraper 8 to rotate. The rubber soft scraper 8 scrapes the abrasive from the top of the base 1 into the opening 13, and then into the abrasive storage tank 31 through the opening 13, realizing the recycling of abrasive.

[0054] The operation method of this high-precision rock thin-section polishing machine includes the following steps:

[0055] S1. Place the thin rock slice on the glass slide, then place the glass slide inside the groove 5 of the stage 3. Activate the hydraulic telescopic unit 15 via the control unit 36. The hydraulic telescopic unit 15 moves the flexible steel cable 16 downwards, causing the upper end of the polishing motor base 17 to lose tension. This allows the polishing motor 18 and polishing wheel 19 to move downwards under gravity until the polishing disc 22 contacts the thin rock slice. During this process, the polishing amount can be adjusted by rotating the adjusting bolt C29 to lift the pressure sensing unit 28, causing the polishing disc 22 to move upwards. The polishing amount is then displayed on the screen of the control unit 36.

[0056] S2. The abrasive circulation pump 32 is started by the control unit 36, and the abrasive in the abrasive storage tank 31 is drawn and transferred to the top of the polishing wheel 19 through the first abrasive pipe 33 and the second abrasive pipe 34. The abrasive falls onto the rock sheet from the polishing wheel opening 20. At this time, the first laser ranging unit 23 can detect the height of the abrasive above the polishing wheel 19. The control unit 36 ​​sets the abrasive height in advance. When the abrasive height is higher than the set value, the control unit 36 ​​controls the abrasive circulation pump 32 to stop. When the abrasive height is lower than the set value during the polishing process, the abrasive circulation pump 32 is restarted to supply abrasive.

[0057] S3. The polishing motor 18 is started by the control unit 36. The polishing motor 18 drives the polishing wheel 19 and polishing disc 22 to rotate and polish the rock slice. The second laser ranging unit 30 can measure the longitudinal distance traveled by the polishing wheel 19. This distance is the amount of polishing in real time, and the result is displayed on the display screen of the control unit 36.

[0058] S4. During polishing, the abrasive falls onto the top of the base 1. When the glass stage 3 rotates, it drives the rubber soft scraper 8 to rotate. The rubber soft scraper 8 scrapes the abrasive from the top of the base 1 into the inlet 13, and then through the inlet 13 into the abrasive storage tank 31. It is then transported to the upper part of the polishing wheel 19 for circulation through the abrasive circulation pump 32 along the abrasive pipeline.

[0059] This polishing machine is computer-controlled, allowing for precise control of polishing time, polishing disc speed, and polishing intensity. Compared to manual polishing, using this thin-slab polishing mechanism significantly reduces operational difficulty and labor intensity. During normal machine operation, operator factors have minimal impact, resulting in minimal batch quality fluctuations and stable, high-precision workpiece quality. The polishing effect can be quantified using a laser ranging unit, meeting the high-precision polishing requirements of various lithological samples. During polishing, the abrasive can be temporarily stored on the upper part of the polishing wheel and fed through the wheel's inlet, replacing manual application of polishing material. This method is not only more uniform but also saves on polishing material, increasing work efficiency by more than 20 times compared to manual polishing.

[0060] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A high-precision polishing machine for thin rock sections, comprising a column (2), a glass stage (3), and a polishing wheel (19), wherein the column (2) is fixed on a base (1), characterized in that: The column (2) is located at the center of the glass stage (3), and a sample driving mechanism for driving the glass stage (3) to rotate is connected to the column (2); a polishing mechanism for driving the polishing wheel (19) to rotate and rise is connected to the column (2), and a laser ranging unit is provided on the polishing mechanism; It also includes an abrasive supply mechanism, which includes an abrasive storage tank (31), the abrasive storage tank (31) is connected to an abrasive circulation pump (32) through a first abrasive pipe (33), the abrasive circulation pump (32) is connected to a second abrasive pipe (34), and the other end of the second abrasive pipe (34) is located above the polishing wheel (19).

2. The high-precision polishing machine for thin rock sections according to claim 1, characterized in that: The polishing mechanism includes a bracket (14), which includes a bracket top plate and a bracket bottom plate. The bracket top plate and the bracket bottom plate are connected by a vertical plate. The vertical plate of the bracket (14) is fixed on a column (2). A vertical guide column (26) is provided between the bracket top plate and the bracket bottom plate. A guide block (27) is slidably connected on the guide column (26). A polishing motor (18) is connected to the guide block (27) through a polishing motor seat (17). The output shaft of the polishing motor (18) is connected to a polishing wheel (19). A polishing disc (22) is connected to the bottom of the polishing wheel (19).

3. The high-precision polishing machine for thin rock sections according to claim 2, characterized in that: The polishing wheel (19) has a polishing wheel frame (21) at its outer edge and a polishing wheel opening (20) at the edge of its surface. The polishing disc (22) is bonded to the lower part of the middle of the polishing wheel (19) and the opening (20) is located outside the circumference of the polishing disc (22).

4. The high-precision polishing machine for thin rock sections according to claim 3, characterized in that: The laser ranging unit includes a first laser ranging unit (23) and a second laser ranging unit (30). The first laser ranging unit (23) is fixed on the side wall of the bracket base plate corresponding to the polishing wheel (19) and is used to measure the height of the abrasive on the upper part of the polishing wheel (19). The second laser ranging unit (30) is fixed on the bottom of the guide block (27) and is used to measure the distance between the guide block (27) and the upper surface of the bracket base plate.

5. The high-precision polishing machine for thin rock sections according to claim 4, characterized in that: The polishing motor base (17) has a pressure sensing unit (28) fixed at the bottom. The bracket base plate has a height-adjustable bolt C (29) at the corresponding pressure sensing unit (28). The pressure sensing unit (28) is used to measure the pressure of the polishing motor base (17) on the bolt C (29), thereby measuring the pressure of the polishing disc (22) on the rock sheet.

6. The high-precision polishing machine for thin rock sections according to claim 5, characterized in that: The hydraulic telescopic unit (15) is fixed above the bracket (14), and the output end of the hydraulic telescopic unit (15) is connected to the polishing motor base (17) through a soft steel cable (16).

7. The high-precision polishing machine for thin rock sections according to claim 2, characterized in that: The guide post (26) has a fixing ring (24) on its lower outer side. The fixing ring (24) is fixed on the bottom plate of the bracket, and bolt B (25) is connected to the side wall of the fixing ring (24). Bolt B (25) is used to tighten the guide post (26). The upper end of the guide post (26) is connected to the top plate of the bracket.

8. The high-precision polishing machine for thin rock sections according to claim 1, characterized in that: The sample driving mechanism includes a drive motor (10), the output shaft of which is connected to a second gear (11), the second gear (11) meshing with a first gear (4), and the first gear (4) fixed on the upper end of the glass stage (3).

9. The high-precision polishing machine for thin rock sections according to claim 8, characterized in that: The upper surface of the glass stage (3) is provided with several grooves (5), and glass slides are provided in the grooves (5), with rock samples attached to the glass slides.

10. The high-precision polishing machine for thin rock sections according to claim 9, characterized in that: Several rubber soft scraper fixing frames (6) are evenly fixed on the outer circumference of the glass stage (3). The rubber soft scraper (8) is fixed on the rubber soft scraper fixing frame (6) by bolt A (7), and the lower surface of the rubber soft scraper (8) is in contact with the upper surface of the base (1).

11. The high-precision polishing machine for thin rock sections according to claim 1, characterized in that: The base (1) is a box with several openings (13) on the upper surface of the box. The abrasive storage tank (31) is located inside the box, and the openings (13) correspond to the openings on the upper part of the abrasive storage tank (31).

12. The high-precision polishing machine for thin rock sections according to any one of claims 1-11, characterized in that: It also includes a control unit (36), which is fixed to the top of the column (2) by a control unit fixing plate (35). The control unit (36) receives signals from the first laser ranging unit (23), the pressure sensing unit (28) and the second laser ranging unit (30), and controls the drive motor (10), the hydraulic telescopic unit (15), the polishing motor (18) and the abrasive circulation pump (32). The control unit (36) is equipped with a display screen.

13. A method of using the high-precision polishing machine for rock thin sections according to claim 12, characterized in that... Includes the following steps: S1. Place the rock slice on the glass slide, and then place the glass slide inside the groove (5) of the glass stage (3). Control the hydraulic telescopic unit (15) through the control unit (36) to drive the soft steel cable (16) to move down. The polishing motor (18) and polishing wheel (19) move down under the action of gravity, and the polishing plate (22) moves down to contact the rock slice. S2. The abrasive circulation pump (32) is started by the control unit (36) to draw the abrasive in the abrasive storage tank (31) to the top of the polishing wheel (19), and the abrasive falls onto the rock sheet from the polishing wheel opening (20); S3. The polishing motor (18) is started by the control unit (36). The polishing motor (18) drives the polishing wheel (19) and polishing disc (22) to rotate and polish the thin rock sheet. S4. During polishing, the abrasive falls on the top of the base (1). When the glass stage (3) rotates, it drives the rubber soft scraper (8) to rotate. The rubber soft scraper (8) scrapes the abrasive on the top of the base (1) into the inlet (13) and then into the abrasive storage tank (31) through the inlet (13).

14. The method of using the high-precision polishing machine for rock thin sections according to claim 13, characterized in that: In step S1, rotating the adjusting bolt C (29) lifts the pressure sensing unit (28), causing the polishing plate (22) to move upward, thereby adjusting the polishing amount and displaying the polishing amount on the display screen of the control unit (36).

15. The method of using the high-precision polishing machine for rock thin sections according to claim 13, characterized in that: In step S2, the first laser ranging unit (23) detects the abrasive height above the polishing wheel (19). When the abrasive height is higher than the set value, the control unit (36) controls the abrasive circulation pump (32) to stop. When the abrasive height is lower than the set value, the abrasive circulation pump (32) starts.

16. The method of using the high-precision polishing machine for rock thin sections according to claim 13, characterized in that: In step S3, the second laser ranging unit (30) measures the longitudinal distance traveled by the polishing wheel (19) and displays the result on the display screen of the control unit (36).

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