Large surface grinding machine and grinding method

Abstract

The present invention belongs to the technical field of grinding machines, and provides a large-scale surface grinding machine and a grinding method, wherein the grinding machine comprises a base, a movable plate is arranged on the base, a telescopic part is fixedly installed on the movable plate, the telescopic part points to the base and a lifting plate is fixedly installed on its output end, a connecting chamber is fixedly installed on the lifting plate, a partition is fixedly installed in the connecting chamber, a rotating shaft is rotatably installed in the connecting chamber, the rotating shaft passes through the partition and one end of the rotating shaft extends out of the connecting chamber, and a rotating power part driving the rotating shaft to rotate is fixedly installed on the connecting chamber. Compared with the prior art, the beneficial effects of the present invention are as follows: after the lubricating liquid and powdery debris move onto the guide plate, they will move upward along the guide plate and leave the workpiece surface, thereby realizing the cleaning of the grinding debris, reducing the moving distance of the grinding debris on the workpiece surface, reducing the probability of the workpiece surface being scratched by the debris, and improving the grinding effect of the workpiece surface.

Description

Technical Field

[0001] The invention belongs to the technical field of grinders, and in particular relates to a large-scale plane grinder and a grinding method. Background Art

[0002] Surface grinding machines are widely used in the machinery manufacturing industry to improve the surface quality and performance of parts, and increase their service life and precision. They can process a variety of metal and non-metal materials, and the processed surface shapes include planes, internal and external cylindrical and conical surfaces, convex and concave spherical surfaces, threads, tooth surfaces and other profiles.

[0003] Most existing surface grinders use an entire grinding disc to grind the surface of a workpiece during use. As a result, during the grinding process, grinding debris generated in the middle of the grinding disc needs to move a long distance outward before it can leave the contact surface between the grinding disc and the workpiece, resulting in a large number of workpiece debris and abrasive debris on the contact surface between the workpiece and the grinding disc. During the movement of the debris, the surface of the workpiece will be scratched due to the pressure of the grinding disc, resulting in a poor grinding effect of the workpiece. Summary of the invention

[0004] The purpose of the present invention is to provide a large-scale surface grinder and a grinding method, aiming to solve the technical problem in the prior art that there are a lot of workpiece debris and abrasive debris on the contact surface between the workpiece and the grinding disc, resulting in poor grinding effect of the workpiece.

[0005] The present invention is implemented as follows: a large-scale surface grinding machine comprises a base, a movable plate is arranged on the base, a telescopic member is fixedly installed on the movable plate, the telescopic member points to the base and a lifting plate is fixedly installed on the output end thereof, a connecting chamber is fixedly installed on the lifting plate, a partition is fixedly installed in the connecting chamber, a rotating shaft is rotatably installed in the connecting chamber, the rotating shaft passes through the partition and one end of the rotating shaft extends out of the connecting chamber, and a rotating power member that drives the rotating shaft to rotate is fixedly installed on the connecting chamber;

[0006] The first bottom plate is fixedly installed on the end of the rotating shaft, and a second bottom plate coaxially and coplanarly is fixedly installed on the first bottom plate, and grinding discs are arranged on the bottom surfaces of the first bottom plate and the second bottom plate, the second bottom plate is an annular structure, and a plurality of arc-shaped through grooves are arranged between the first bottom plate and the second bottom plate, and a guide plate is fixedly installed in each through groove, and a cleaning shaft extending into the through groove is rotatably installed on the first bottom plate, the cleaning shaft is located at the front side of the lower end of the guide plate, and a brush is fixedly installed on the cleaning shaft, and when the cleaning shaft rotates, the brush contacts the grinding surface of the grinding disc, and a coaxially arranged retaining ring is fixedly installed on the outer side of the second bottom plate, and a plurality of groups of through grooves are also arranged between the second bottom plate and the retaining ring, and the structural arrangement on the second bottom plate is the same as that on the first bottom plate;

[0007] A lubricating liquid channel is provided in the rotating shaft, and the lubricating liquid channel runs through the first bottom plate and the grinding disc. A lubricating liquid pump is fixedly installed on the lifting plate, and the lubricating liquid pump, the lubricating liquid channel and the same chamber of the communicating chamber are communicated.

[0008] Further technical solution: a mobile frame is slidably installed on the base, a first servo module for driving the mobile frame to move is provided on the base, a mobile plate is slidably installed on the horizontal section of the mobile frame, a second servo module for driving the mobile plate to move is provided on the mobile frame, and the moving direction of the mobile plate is perpendicular to the moving direction of the mobile frame.

[0009] Further technical solution: the lower end of the guide plate is flush with the bottom surface of the first bottom plate and an angle is set between the guide plate and the horizontal plane, and a gap is set between the upper end of the guide plate and the upper surface of the first bottom plate.

[0010] Further technical solution: An annular groove is provided on the surface of the first bottom plate away from the base, and multiple groups of power tubes are fixedly installed in the annular groove. The power tubes are distributed corresponding to the positions of the cleaning shafts. The power tubes are arranged around the cleaning shaft and driving blades located in the power tubes are fixedly installed on the cleaning shaft. The power tubes are connected to an air pump fixedly installed on the lifting plate.

[0011] Further technical solution: the air pump is connected to another chamber of the connecting chamber, an air intake channel is opened on the rotating shaft, the air intake channel, the air pump and the same chamber of the connecting chamber are connected, the end of the air intake channel away from the connecting chamber is connected to an air guide pipe, and the air guide pipe is connected to the power pipe.

[0012] Further technical solution: a blow box is fixedly installed in the through groove, and the blow box is located on the side of the cleaning shaft away from the guide plate. A plurality of blowing holes are provided on the surface of the blow box close to the cleaning shaft, and the blowing holes are distributed on the upper and lower sides of the cleaning shaft. The blow box is connected to the power pipe through a connecting pipe.

[0013] Further technical solution: The through slot is provided with an arc-shaped top plate, on which a collecting filter basket is fixedly installed. The collecting filter basket is located in the through slot and one side thereof contacts the higher end of the guide plate, and a feed groove is provided on the side where the collecting filter basket contacts the guide plate.

[0014] The present invention also provides a large-scale surface grinding method, which is applied to the large-scale surface grinding machine described above, and comprises the following steps:

[0015] Step S1: placing the workpiece to be polished on the base and fixing it, and driving the lifting plate to move by the telescopic member so that the lower surface of the polishing disc is flush with the polished surface of the workpiece;

[0016] Step S2: The first servo module and the second servo module are used to drive the movable frame and the movable plate to move respectively, so that the grinding disc can move in a plane to fully grind the workpiece;

[0017] Step S3: The rotating shaft is driven to rotate by the rotating power member so that the grinding disc grinds the surface of the workpiece, and at the same time, the lubricating liquid is pumped by the lubricating liquid pump and transported to the surface of the workpiece;

[0018] Step S4: When the lubricating liquid and debris move to the contact area between the brush and the workpiece, the debris and part of the lubricating liquid moved to the contact area are pushed to the direction of the guide plate by the action of the brush. The debris generated by grinding will move along the guide plate and leave the workpiece surface under the push of the brush, thereby completing the cleaning of the debris.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the air flows in the power tube, the cleaning shaft is driven to rotate through the driving blades. The rotation speed of the cleaning shaft is greater than the rotation speed of the rotating shaft, so that the brush is actively rotated. When the brush rotates, its end contacts the surface of the lower workpiece, so that the brush can push the debris and part of the lubricating liquid moved there to move in the direction of the guide plate, so that the larger debris produced by grinding will move along the guide plate and leave the workpiece surface under the push of the brush. The powdery debris produced by grinding will adhere to the brush due to the presence of the lubricating liquid. Therefore, when the brush rotates rapidly, the lubricating liquid and the powdery debris will be separated from the brush and thrown to the side where the guide plate is located under the action of centrifugal force. Since the guide plate is in a rapid rotation state and the guide plate is in an inclined state, the lubricating liquid and the powdery debris move to the guide plate and then move upward along the guide plate to leave the workpiece surface, thereby realizing the cleaning of the grinding debris, reducing the moving distance of the grinding debris on the workpiece surface, reducing the probability of the workpiece surface being scratched by the debris, improving the grinding effect of the workpiece surface, and reducing the contact between the outer grinding disc and the grinding debris, thereby increasing the service life of the grinding disc.

[0021] 2. Air is blown out from the blow box through the blow hole. When the air blows toward the brush on the lower side, the air flow speed is in the same direction as the brush rotation speed. The air further accelerates the brush rotation speed and can provide force to the lubricant attached to the brush surface, thereby improving the adhesion between the lubricant and the brush and reducing the probability of lubricant falling off, thereby improving the brush cleaning effect on the workpiece surface. When the brush rotates to a near horizontal state, the air can accelerate the lubricant to separate from the brush, increase the speed at which the lubricant separates from the brush, improve the cleaning effect of the brush itself, and further ensure the subsequent cleaning effect on the workpiece surface. When the brush rotates to the top of the cleaning axis, the air flow speed is opposite to the brush rotation speed. The air is further purged and dried by the brush, thereby improving the subsequent brush's adsorption capacity for the lubricant and further improving the cleaning effect on the workpiece surface. At the same time, the air blown out of the blow box can further push the lubricant and granular debris on the guide plate to move after crossing the cleaning axis, thereby reducing the probability of debris sliding back to the workpiece surface on the guide plate, thereby further improving the cleaning effect on the workpiece surface.

[0022] 3. The debris and lubricating fluid moving along the guide plate will enter the collection filter basket through the feed trough. The debris will be collected by the collection filter basket, and the lubricating fluid can fall back to the workpiece surface through the collection filter basket. At the same time, since the collection filter basket is in a fast-rotating state, the separation of the lubricating fluid can be accelerated under the action of centrifugal force, so that the lubricating fluid can be filtered and cleaned in time, and the cleaned lubricating fluid can continue to be used in subsequent grinding, ensuring the lubrication and cooling of the workpiece grinding surface, and further improving the grinding effect of the workpiece surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the lifting plate in the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the grinding disc in the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the interior of the communicating chamber in the present invention.

[0027] Figure 5 It is a structural schematic diagram of the first base plate in the present invention.

[0028] Figure 6 It is a top view of the first bottom plate in the present invention.

[0029] Figure 7 for Figure 4 A magnified schematic diagram of the A1 region in the middle.

[0030] Figure 8 for Figure 5 A magnified schematic diagram of the A2 region in the middle.

[0031] Fig. 9 for Figure 6 A magnified schematic diagram of the A3 region in the middle.

[0032] Fig.10 It is a schematic diagram of the explosion structure of the first bottom plate in the present invention.

[0033] In the attached drawings: 1. base; 2. movable frame; 3. first servo module; 4. movable plate; 5. second servo module; 6. telescopic member; 7. lifting plate; 8. connecting chamber; 9. partition; 10. rotating shaft; 11. lubricating fluid channel; 12. rotating power member; 13. lubricating fluid pump; 14. first bottom plate; 15. annular groove; 16. power tube; 17. cleaning shaft; 18. brush; 19. driving blade; 20. air guide tube; 21. air inlet channel; 22. guide plate; 23. blow box; 24. connecting pipe; 25. blow hole; 26. top plate; 27. collecting filter basket; 28. feed trough; 29. ​​second bottom plate; 30. retaining ring; 31. air pump; 32. grinding disc; 33. through groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0036] like Figure 1-Figure 10 As shown, a large-scale surface grinding machine provided by the present invention comprises a base 1, a moving plate 4 is arranged on the base 1, a moving frame 2 is slidably installed on the base 1, a first servo module 3 for driving the moving frame 2 to move is arranged on the base 1, the moving plate 4 is slidably installed on the horizontal section of the moving frame 2, a second servo module 5 for driving the moving plate 4 to move is arranged on the moving frame 2, the moving direction of the moving plate 4 is perpendicular to the moving direction of the moving frame 2, a telescopic member 6 is fixedly installed on the moving plate 4, the telescopic member 6 points to the base 1 and a lifting plate 7 is fixedly installed on its output end, a connecting chamber 8 is fixedly installed on the lifting plate 7, a partition 9 is fixedly installed in the connecting chamber 8, a rotating shaft 10 is rotatably installed in the connecting chamber 8, the rotating shaft 10 passes through the partition 9 and one end of the rotating shaft 10 extends out of the connecting chamber 8, and a rotating power member 12 for driving the rotating shaft 10 to rotate is fixedly installed on the connecting chamber 8;

[0037] A first bottom plate 14 is fixedly installed at the end of the rotating shaft 10, and a coaxial and coplanar second bottom plate 29 is fixedly installed on the first bottom plate 14. The bottom surfaces of the first bottom plate 14 and the second bottom plate 29 are both provided with a grinding disc 32. The bottom surfaces of the first bottom plate 14 and the second bottom plate 29 are both flush and a gap is provided with the grinding surface of the grinding disc 32. The second bottom plate 29 is an annular structure and a plurality of arc-shaped through grooves 33 are provided between the first bottom plate 14 and the second bottom plate 29. A guide plate 22 is fixedly installed in each through groove 33. The lower end of the guide plate 22 is flush with the bottom surface of the first bottom plate 14 and the guide plate 22 is aligned with the horizontal surface. An included angle is set, and a gap is set between the upper end of the guide plate 22 and the upper surface of the first bottom plate 14. A cleaning shaft 17 extending into the through groove 33 is rotatably installed on the first bottom plate 14. The cleaning shaft 17 is located at the front side of the lower end of the guide plate 22. A brush 18 is fixedly installed on the cleaning shaft 17. When the cleaning shaft 17 rotates, the brush 18 contacts the grinding surface of the grinding disc 32. A coaxially arranged retaining ring 30 is fixedly installed on the outer side of the second bottom plate 29. A plurality of through grooves 33 are also set between the second bottom plate 29 and the retaining ring 30. The structural setting on the second bottom plate 29 is the same as that on the first bottom plate 14.

[0038] A lubricating liquid channel 11 is opened in the rotating shaft 10, and the lubricating liquid channel 11 passes through the first bottom plate 14 and the grinding disc 32. A lubricating liquid pump 13 is fixedly installed on the lifting plate 7. The lubricating liquid pump 13 and the lubricating liquid channel 11 are connected to the same chamber of the connecting chamber 8.

[0039] In actual application of this embodiment, the workpiece to be polished is placed on the base 1 and fixed, and the lifting plate 7 is driven to move by the telescopic member 6 so that the lower surface of the polishing disc 32 is flush with the polished surface of the workpiece, and then the first servo module 3 and the second servo module 5 respectively drive the moving frame 2 and the moving plate 4 to move, so that the polishing disc 32 can move in a plane to fully polish the workpiece;

[0040] When the grinding disc 32 contacts the surface of the workpiece for grinding, the rotating shaft 10 is driven to rotate by the rotating power member 12, and the rotating shaft 10 drives the first bottom plate 14 and the second bottom plate 29 to rotate, so that the grinding disc 32 grinds the surface of the workpiece, and at the same time, the lubricating liquid is pumped by the lubricating liquid pump 13 and transported to a cavity of the connecting chamber 8, and then the lubricating liquid flows downward to the surface of the workpiece through the lubricating liquid channel 11, and the lubricating liquid will diffuse from the position of the rotating shaft 10 to the surroundings, and the debris generated during grinding will diffuse and move around under the action of centrifugal force;

[0041] Since the end of the brush 18 is in contact with the surface of the workpiece, the brush 18 will rotate under the action of friction when the grinding disc 32 rotates. When the lubricating fluid and debris move to the contact area between the brush 18 and the workpiece, the rotation of the brush 18 will push the debris and part of the lubricating fluid to move in the direction of the guide plate 22. As a result, the larger debris generated by grinding will move away from the workpiece surface along the guide plate 22 under the push of the brush 18. The powdery debris generated by grinding will adhere to the brush 18 due to the presence of the lubricating fluid. Therefore, when the brush 18 rotates rapidly, the centrifugal force will cause the lubricating fluid and the powdery debris to separate from the brush 18 and be thrown toward the guide plate 22. 2, since the guide plate 22 is in a fast rotating state and the guide plate 22 is in an inclined state, the lubricating liquid and powdered debris move onto the guide plate 22 and then move upward along the guide plate 22 to leave the workpiece surface, thereby achieving the cleaning of the grinding debris, reducing the moving distance of the grinding debris on the workpiece surface, reducing the probability of the workpiece surface being scratched by the debris, improving the grinding effect of the workpiece surface, and reducing the contact between the outer grinding disc 32 and the grinding debris, thereby increasing the service life of the grinding disc 32. When the debris moves to the area where the through groove 33 is located and no longer contacts the grinding disc 32, the moving speed of the debris will decrease, so that the debris can be more easily cleaned by the brush 18.

[0042] In an example of the present embodiment, the rotating power part 12 is a motor, and of course it can also be other parts that can output rotational power, such as a hydraulic motor. The motor drives the rotating shaft 10 to rotate, thereby causing the grinding disc 32 to rotate. The telescopic part 6 is an electric telescopic rod, and of course it can also be other parts that can actively change the length, such as a hydraulic cylinder. The electric telescopic rod drives the lifting plate 7 to move up and down, thereby adjusting the height of the grinding disc 32.

[0043] like Figure 1-Figure 10 As shown, a large-scale surface grinder provided by the present invention is provided with an annular groove 15 on the surface of the first bottom plate 14 away from the base 1, and multiple groups of power tubes 16 are fixedly installed in the annular groove 15. The power tubes 16 are distributed correspondingly to the positions of the cleaning shafts 17. The power tubes 16 are arranged around the cleaning shafts 17 and driving blades 19 located in the power tubes 16 are fixedly installed on the cleaning shafts 17. The power tubes 16 are connected to an air pump 31 fixedly installed on the lifting plate 7.

[0044] Specifically, the air pump 31 is connected to another chamber of the connecting chamber 8, an air intake channel 21 is opened on the rotating shaft 10, the air intake channel 21 and the air pump 31 are connected to the same chamber of the connecting chamber 8, and the end of the air intake channel 21 away from the connecting chamber 8 is connected to the air guide pipe 20, and the air guide pipe 20 is connected to the power pipe 16.

[0045] Specifically, a blow box 23 is fixedly installed in the through groove 33. The blow box 23 is located on the side of the cleaning shaft 17 away from the guide plate 22. A plurality of blowing holes 25 are provided on the surface of the blow box 23 close to the cleaning shaft 17. The blowing holes 25 are distributed on the upper and lower sides of the cleaning shaft 17. The blow box 23 is connected to the power tube 16 through a connecting tube 24.

[0046] In actual application of this embodiment, the air pump 31 delivers air to a chamber of the connecting chamber 8, and the air enters the power tube 16 through the air inlet channel 21 and the air guide pipe 20, and then enters the blowing box 23 through the connecting pipe 24. When the air flows in the power tube 16, the cleaning shaft 17 is driven to rotate by the driving blade 19. The rotation speed of the cleaning shaft 17 is greater than the rotation speed of the rotating shaft 10, so that the brush 18 is actively rotated. When the brush 18 rotates, its end contacts the surface of the lower workpiece, so that the brush 18 can push the debris and part of the lubricating liquid moved to the direction of the guide plate 22, so that the larger debris generated by grinding will move away from the workpiece along the guide plate 22 under the push of the brush 18. The powdery debris generated by grinding will adhere to the brush 18 due to the presence of the lubricating liquid. Therefore, when the brush 18 rotates rapidly, the centrifugal force will cause the lubricating liquid and the powdery debris to separate from the brush 18 and be thrown to the side where the guide plate 22 is located. Since the guide plate 22 is in a rapid rotation state and the guide plate 22 is in an inclined state, the lubricating liquid and the powdery debris move to the guide plate 22 and then move upward along the guide plate 22 to leave the workpiece surface, thereby cleaning the grinding debris, reducing the moving distance of the grinding debris on the workpiece surface, reducing the probability of the workpiece surface being scratched by the debris, improving the grinding effect of the workpiece surface, and being able to reduce the contact between the outer grinding disc 32 and the grinding debris, thereby increasing the service life of the grinding disc 32;

[0047] The air is blown out from the blow box 23 through the blow holes 25. Since the blow holes 25 are distributed on the upper and lower sides of the cleaning shaft 17, the air will blow toward the brushes 18 located on the upper and lower sides of the cleaning shaft 17. When the air blows toward the brush 18 on the lower side, the air flow speed is in the same direction as the rotation speed of the brush 18. The air further accelerates the rotation speed of the brush 18, and at the same time, it can provide a force on the lubricating liquid attached to the surface of the brush 18, thereby improving the adhesion between the lubricating liquid and the brush 18, reducing the probability of the lubricating liquid falling off, and thus improving the cleaning effect of the brush 18 on the workpiece surface. When the brush 18 rotates to a nearly horizontal state, the air can accelerate the separation of the lubricating liquid from the brush 18, thereby improving The speed at which the lubricating liquid leaves the brush 18 improves the cleaning effect of the brush 18 itself, further ensuring the subsequent cleaning effect on the workpiece surface. When the brush 18 rotates to above the cleaning shaft 17, the air flow speed is opposite to the rotation speed of the brush 18. The brush 18 is further purged and dried by the air, thereby improving the subsequent adsorption capacity of the brush 18 for the lubricating liquid, further improving the cleaning effect on the workpiece surface. At the same time, the air blown out by the blow box 23 can further push the lubricating liquid and granular debris on the guide plate 22 to move after passing the cleaning shaft 17, reducing the probability of the debris on the guide plate 22 sliding back to the workpiece surface, further improving the cleaning effect on the workpiece surface.

[0048] like Figure 1 , Figure 4 , Fig.10 As shown, a large-scale surface grinder provided by the present invention is provided with an arc-shaped top plate 26 on the through groove 33, and a collecting filter basket 27 is fixedly installed on the top plate 26. The collecting filter basket 27 is located in the through groove 33 and one side surface thereof contacts the higher end of the guide plate 22. A feed groove 28 is provided on the side surface of the collecting filter basket 27 contacting the guide plate 22.

[0049] In actual application of this embodiment, multiple groups of top plates 26 are fixed to the first bottom plate 14 and the second bottom plate 29 by fixing screws. At this time, the debris and lubricating fluid moving along the guide plate 22 will enter the collecting filter basket 27 through the feed trough 28, and the debris will be collected by the collecting filter basket 27. The lubricating fluid can fall back to the surface of the workpiece through the collecting filter basket 27. At the same time, since the collecting filter basket 27 is in a fast rotating state, the separation of the lubricating fluid can be accelerated under the action of centrifugal force, thereby realizing timely filtering and cleaning of the lubricating fluid, and enabling the cleaned lubricating fluid to continue to be used in subsequent grinding, thereby ensuring the lubrication and cooling of the grinding surface of the workpiece, further improving the grinding effect of the workpiece surface, and the top plate 26 can block the top of the through groove 33 to prevent the lubricating fluid and debris from flying out at will under the action of the brush 18, thereby ensuring the comprehensive collection of the lubricating fluid and debris.

[0050] like Figure 1-Figure 10As shown, a large-scale surface grinding method provided by the present invention is applied to the large-scale surface grinding machine described above, and comprises the following steps:

[0051] Step S1: Place the workpiece to be polished on the base 1 and fix it, and drive the lifting plate 7 to move by the telescopic member 6 so that the lower surface of the polishing disc 32 is flush with the polished surface of the workpiece;

[0052] Step S2: The first servo module 3 and the second servo module 5 respectively drive the movable frame 2 and the movable plate 4 to move, so that the grinding disc 32 can move in a plane to fully grind the workpiece;

[0053] Step S3: The rotating shaft 10 is driven to rotate by the rotating power member 12, so that the grinding disc 32 grinds the surface of the workpiece, and at the same time, the lubricating liquid is pumped by the lubricating liquid pump 13 and transported to the surface of the workpiece;

[0054] Step S4: When the lubricating liquid and debris move to the contact area between the brush 18 and the workpiece, the debris and part of the lubricating liquid moved to the contact area are pushed to the direction of the guide plate 22 by the action of the brush 18. The debris generated by grinding will move along the guide plate 22 and leave the workpiece surface under the push of the brush 18, thereby completing the cleaning of the debris.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A large surface grinding machine, comprising a base (1), characterized in that: The base (1) is provided with a movable plate (4), a telescopic member (6) is fixedly mounted on the movable plate (4), the telescopic member (6) points toward the base (1) and a lifting plate (7) is fixedly mounted on the output end thereof, a connecting chamber (8) is fixedly mounted on the lifting plate (7), a partition (9) is fixedly mounted in the connecting chamber (8), a rotating shaft (10) is rotatably mounted in the connecting chamber (8), the rotating shaft (10) passes through the partition (9) and one end of the rotating shaft (10) extends out of the connecting chamber (8), and a rotating power member (12) is fixedly mounted on the connecting chamber (8) for driving the rotating shaft (10) to rotate; A first bottom plate (14) is fixedly mounted on the end of the rotating shaft (10), a coaxial and coplanar second bottom plate (29) is fixedly mounted on the first bottom plate (14), a grinding disc (32) is provided on the bottom surface of the first bottom plate (14) and the second bottom plate (29), the second bottom plate (29) is an annular structure, and a plurality of arc-shaped through grooves (33) are provided between the first bottom plate (14) and the second bottom plate (29), each through groove (33) is fixedly mounted with a guide plate (22), and a guide plate (22) is rotatably mounted on the first bottom plate (14) and extends into the through groove (33). ), the cleaning shaft (17) being located at the front side of the lower end of the guide plate (22), a brush (18) being fixedly mounted on the cleaning shaft (17), the brush (18) being in contact with the grinding surface of the grinding disc (32) when the cleaning shaft (17) rotates, a coaxially arranged retaining ring (30) being fixedly mounted on the outer side of the second bottom plate (29), a plurality of groups of through grooves (33) being also arranged between the second bottom plate (29) and the retaining ring (30), and the structural arrangement on the second bottom plate (29) being the same as the structural arrangement on the first bottom plate (14); A lubricating liquid channel (11) is provided in the rotating shaft (10), and the lubricating liquid channel (11) passes through the first bottom plate (14) and the grinding disc (32). A lubricating liquid pump (13) is fixedly mounted on the lifting plate (7), and the lubricating liquid pump (13), the lubricating liquid channel (11) and the same chamber of the communication chamber (8) are communicated with each other; An annular groove (15) is formed on a surface of the first bottom plate (14) away from the base (1), and a plurality of power tubes (16) are fixedly mounted in the annular groove (15). The power tubes (16) are arranged in a corresponding position to the cleaning shaft (17). The power tubes (16) are arranged around the cleaning shaft (17) and a driving blade (19) located in the power tubes (16) is fixedly mounted on the cleaning shaft (17). The power tubes (16) are in communication with an air pump (31) fixedly mounted on the lifting plate (7); The air pump (31) is in communication with another chamber of the communication chamber (8); an air intake passage (21) is provided on the rotating shaft (10); the air intake passage (21), the air pump (31) and the same chamber of the communication chamber (8) are in communication; an end of the air intake passage (21) away from the communication chamber (8) is in communication with an air guide pipe (20); and the air guide pipe (20) is in communication with the power pipe (16); A blow box (23) is fixedly installed in the through groove (33). The blow box (23) is located on a side of the cleaning shaft (17) away from the guide plate (22). A plurality of groups of blow holes (25) are provided on a surface of the blow box (23) close to the cleaning shaft (17). The blow holes (25) are distributed on the upper and lower sides of the cleaning shaft (17). The blow box (23) is connected to the power pipe (16) via a connecting pipe (24).

2. A large surface grinding machine according to claim 1, characterized in that: A moving frame (2) is slidably mounted on the base (1); a first servo module (3) is provided on the base (1) for driving the moving frame (2) to move; a moving plate (4) is slidably mounted on a horizontal section of the moving frame (2); a second servo module (5) is provided on the moving frame (2) for driving the moving plate (4) to move; and a moving direction of the moving plate (4) is perpendicular to a moving direction of the moving frame (2).

3. A large surface grinding machine according to claim 1, characterized in that: The lower end of the guide plate (22) is flush with the bottom surface of the first bottom plate (14), and an angle is set between the guide plate (22) and the horizontal plane, and a gap is set between the upper end of the guide plate (22) and the upper surface of the first bottom plate (14).

4. A large surface grinding machine according to claim 1, characterized in that: The through groove (33) is provided with a top plate (26) of an arc structure, and a collecting filter basket (27) is fixedly mounted on the top plate (26). The collecting filter basket (27) is located in the through groove (33) and one side surface of the collecting filter basket (27) contacts the higher end of the guide plate (22). A feeding groove (28) is provided on the side surface of the collecting filter basket (27) that contacts the guide plate (22).

5. A large-scale surface grinding method, characterized in that: It is applied to a large-scale surface grinding machine as described in any one of claims 1 to 4, and comprises the following steps: Step S1: placing a workpiece to be polished on the base (1) and fixing it, and driving the lifting plate (7) to move by means of the telescopic member (6) so that the lower surface of the polishing disc (32) is flush with the polished surface of the workpiece; Step S2: using the first servo module (3) and the second servo module (5) to respectively drive the movable frame (2) and the movable plate (4) to move, so that the grinding disc (32) can move within a plane to perform comprehensive grinding on the workpiece; Step S3: driving the rotating shaft (10) to rotate by means of the rotating power member (12), so that the grinding disc (32) grinds the surface of the workpiece, and at the same time, the lubricating liquid is pumped by the lubricating liquid pump (13) and delivered to the surface of the workpiece; Step S4: When the lubricating liquid and the debris move to the contact area between the brush (18) and the workpiece, the debris and part of the lubricating liquid moved to the contact area are pushed in the direction of the guide plate (22) by the action of the brush (18). The debris generated by grinding is pushed by the brush (18) to move along the guide plate (22) and away from the surface of the workpiece, thereby achieving the cleaning of the debris.

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