Grinding and polishing equipment for new energy battery rack base machining

Abstract

The invention discloses grinding and polishing equipment for machining a new energy battery rack base. The grinding and polishing equipment comprises a bed base serving as an equipment bearing foundation and a U-shaped hanging table fixed to the top wall of the bed base. The number of the hollow rotation assemblies is two, the two hollow rotation assemblies are installed on the left side and the right side of the top end of the machine base in a mirror symmetry mode, the rotating ends, away from each other, of the two hollow rotation assemblies are each provided with a four-corner type pneumatic tool, and the four-corner type pneumatic tools are used for centering and clamping the square single-hole base from four corners. The horizontal polishing assembly moves upwards in the hollow rotating assembly in the radial direction and makes contact with the inner hole wall of the single-hole base, the rotary driving assembly enables the hollow rotating assembly, the four-corner type pneumatic tool and the single-hole base workpiece to rotate by one circle or more, and in the process, the contra-rotating synchronous driving assembly drives key shaft telescopic structures on the left side and the right side to rotate; and the key shaft telescopic structure transmits power to the horizontal polishing assembly, so that inner hole polishing treatment is completed on the single-hole base workpiece in the autorotation process.

Description

Technical Field

[0001] This invention relates to the field of surface treatment technology for battery rack bases, specifically to a grinding and polishing equipment for processing new energy battery rack bases. Background Technology

[0002] The single-hole base in the new energy lithium battery rack serves as the basic unit for battery module assembly. This type of single-hole base is generally square in shape, with a through circular hole in the center. The circular hole is customized according to the size of the cylindrical battery cell. Multiple single-hole bases can be quickly spliced ​​together in the horizontal and vertical directions through the positioning posts, positioning holes and buckle structures integrated on the side to form a regular battery rack matrix. At the same time, it provides precise guidance and positioning for the insertion of battery modules or cells.

[0003] During the processing of single-hole bases, especially after injection molding or punching, burrs are easily generated on the inner wall of the circular through hole. If these burrs are not completely removed, they will scratch the battery surface or even puncture the insulating film during battery assembly, posing a serious safety hazard. Therefore, inner ring polishing is crucial.

[0004] In practice, workers use diamond grinding heads or carbide rotary files for rough machining to quickly remove large burrs and flash generated after injection molding or die casting. Then, they switch to sisal wheels, cloth wheels, or nylon wheels with appropriate polishing wax for fine grinding and chamfering. This smooths the sharp edges of the holes and reduces the roughness of the inner wall to the specified standard, ensuring that the battery cells can be inserted smoothly without being scratched. However, the above operation often requires processing single-hole bases of different sizes and specifications, and the diameter of their circular through holes is also different. The rotary brush rollers, centering grinding heads, or multi-axis robotic arm grippers in existing polishing equipment are designed with specific hole diameter ranges in terms of geometry and working trajectory. Theoretically, this can be adapted by changing the fixtures, but in actual operation, it requires cumbersome mechanical disassembly and assembly. That is, the operator needs to use tools to unscrew dozens of screws, remove the old fixtures from the entire worktable, and then hoist the new fixtures, which weigh tens of kilograms, into place and perform precise calibration. The changeover cycle is relatively long. Summary of the Invention

[0005] The purpose of this invention is to provide a grinding and polishing equipment for processing new energy battery rack bases. A single-hole base to be polished is installed at the end of a hollow rotary assembly via a four-corner pneumatic fixture. Then, the position of a horizontal polishing assembly is adjusted according to the inner hole specifications of the single-hole base. A lifting assembly causes the horizontal polishing assembly to move radially upward within the hollow rotary assembly and contact the inner hole wall of the single-hole base. Then, a rotation drive assembly is activated, causing the hollow rotary assembly, the four-corner pneumatic fixture, and the single-hole base workpiece to rotate more than one revolution. During this process, a counter-rotation synchronous drive assembly drives the key shaft telescopic structures on the left and right sides to rotate, and the key shaft telescopic structures transmit power to the horizontal polishing assembly, so that the single-hole base workpiece completes the inner hole polishing process during the rotation, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grinding and polishing equipment for processing the base of a new energy battery rack, comprising a bed as the supporting foundation of the equipment and a U-shaped hanging platform fixed to the top wall of the bed;

[0007] Hollow rotary assembly, wherein two hollow rotary assemblies are configured and mirror-symmetrically installed on the left and right sides of the top of the bed base, and four-corner pneumatic fixtures are installed on the rotating ends of the two hollow rotary assemblies that are far apart. The four-corner pneumatic fixtures are used to center and clamp the square single-hole base from the four corners. A rotary drive assembly for driving the two hollow rotary assemblies to rotate synchronously around their axes is provided at the rear position of the top of the bed base.

[0008] The longitudinal platform is located on the side of the hollow rotary assembly away from the four-corner pneumatic tooling, and a horizontal polishing component located inside the hollow rotary assembly is installed at the top of the longitudinal platform. A lifting component for controlling the radial position of the horizontal polishing component inside the hollow rotary assembly is installed at the top of the bed.

[0009] The key shaft telescopic structure has two U-shaped lifting platforms installed below the longitudinal platform. The key shaft telescopic structure and the horizontal polishing assembly are connected by transmission. A counter-rotation synchronous drive assembly for outputting rotational power to the left and right key shaft telescopic structures is installed in the middle of the bottom of the U-shaped lifting platform. A control panel is installed at the front of the top of the bed. The output end of the control panel is electrically connected to the input end of the rotation drive assembly, the lifting assembly and the counter-rotation synchronous drive assembly, respectively.

[0010] Preferably, the hollow rotary assembly includes at least one cylinder seat and a rotating cylinder rotatably mounted inside the cylinder seat via ball bearings. The cylinder seat is bolted to one side of the top of the bed seat. An external toothed ring is fixed on the outer circumferential surface of the rotating cylinder, and four side seats with a mirror-symmetrical structure are welded to the outer wall of the end of the rotating cylinder away from the longitudinal stage.

[0011] Preferably, the four-corner pneumatic tooling includes a disc frame, a protruding plate, a thin pneumatic finger, a connecting seat, and a support plate;

[0012] The disc frame is detachably mounted on the rotating drum and is concentric with the rotating drum. Two convex plates are fixed on one side of the outer wall of the disc frame and are mirror-symmetrical about the vertical middle reference plane of the rotating drum. Thin pneumatic fingers are mounted on one side of the outer wall of the convex plates. The connecting seat is mounted on the drive end of the thin pneumatic fingers. The support plate is bolted to one end of the connecting seat, and the back of the support plate is integrally formed with an L-shaped back convexity.

[0013] Preferably, a flange ring is welded to the rotating cylinder on the back of the tray frame, and the rotating cylinder is bolted to the tray frame through the flange ring.

[0014] Preferably, the rotary drive assembly includes a long frame fixed at the rear of the top of the bed, a drive shaft rotatably mounted inside the long frame via a bearing seat, and main gears fixed at both ends of the drive shaft. The main gears mesh with external gear rings. A motor seat is fixed on the outer wall of the bed on one side of the long frame, and a main motor is mounted on the outer wall of one side of the motor seat. The output shaft of the main motor is connected to one end of the drive shaft via a coupling.

[0015] Preferably, the horizontal polishing assembly includes an L-shaped shaft frame, a horizontal shaft, a spiral bevel gear, and a polishing roller;

[0016] The L-shaped shaft bracket is bolted to the top of the longitudinal platform. The horizontal shaft is rotatably mounted on one side of the outer wall of the L-shaped shaft bracket and extends horizontally into the interior of the rotating drum. The spiral bevel gear is fixed to one end of the horizontal shaft, and the polishing roller is detachably mounted to the other end of the horizontal shaft.

[0017] Preferably, the key shaft telescopic structure includes a T-shaped hollow shaft seat fixed to the bottom of the U-shaped lifting platform, a main hollow shaft rotatably mounted inside the T-shaped hollow shaft seat along the axial direction, and an inner spline bushing fixed at the lower end of the main hollow shaft. An outer spline shaft is rotatably mounted at the bottom of the outer spline shaft, and the lower end of the outer spline shaft extends into the interior of the inner spline bushing. Another spiral bevel gear is fixed at the upper end of the outer spline shaft.

[0018] Preferably, the lifting assembly includes a cylinder mounted on the top of the bed seat, uprights fixed at the front and rear positions of the bottom of the longitudinal platform, and an I-beam plate whose lower ends are jointly fixed to the four uprights, with the lower end of the piston rod of the cylinder being fixedly connected to the top of the I-beam plate.

[0019] Preferably, the counter-rotating synchronous drive assembly includes a base, a secondary motor, a gear shaft, and a belt drive structure;

[0020] The base is fixed at the center of the bottom of the U-shaped platform. Two gear shafts are rotatably mounted on the top of the base and kept in mesh. The auxiliary motor is mounted on the top of the bed, and the lower end of the output shaft of the auxiliary motor is fixedly connected to the top of one of the gear shafts. The belt drive structure is installed between the gear shaft and the main hollow shaft.

[0021] Preferably, four internally threaded hexagonal posts are installed at the bottom of the U-shaped platform below the longitudinal platform. A flat plate is fixed to the upper end of two adjacent internally threaded hexagonal posts along the length of the U-shaped platform. The uprights pass vertically through the flat plates, and the I-beams are located below the base.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: The grinding and polishing equipment for processing new energy battery rack bases is equipped with a structure that includes a hollow rotary assembly, a four-corner pneumatic tooling, a rotary drive assembly, a horizontal polishing assembly, a lifting assembly, a key shaft telescopic structure, and a counter-rotation synchronous drive assembly, etc., which cooperate with each other. The single-hole base is installed at the end of the hollow rotary assembly through the four-corner pneumatic tooling. Then, the position of the horizontal polishing assembly is adjusted according to the inner hole specification of the single-hole base. The lifting assembly causes the horizontal polishing assembly to move radially upward in the hollow rotary assembly and contact the inner hole wall of the single-hole base. Then, the rotary drive assembly is turned on, so that the hollow rotary assembly, the four-corner pneumatic tooling, and the single-hole base workpiece rotate more than one revolution. During this process, the counter-rotation synchronous drive assembly drives the key shaft telescopic structure on the left and right sides to rotate. The key shaft telescopic structure transmits power to the horizontal polishing assembly, so that the single-hole base workpiece completes the inner hole polishing process during the rotation process, achieving the purpose of rapid changeover and inner hole polishing.

[0023] The lifting assembly can establish appropriate contact pressure between the two horizontal polishing assemblies on the left and right sides and the hole wall according to the inner hole specifications of the base to be processed. The key shaft telescopic structure allows the transmission length to vary within a certain range, ensuring that no matter what position the horizontal polishing assembly is adjusted to, it can continuously and stably obtain rotational power from the counter-rotating synchronous drive assembly. This allows the equipment to quickly complete the changeover when facing bases of different batches and specifications, without having to replace the entire grinding head spindle or spend several hours changing the fixture, as is the case with traditional equipment, effectively shortening the changeover cycle.

[0024] Secondly, the workpiece itself is the rotating main body, while the horizontal polishing component remains relatively stationary and rotates after contact. After the workpiece rotates once, every point on the hole wall comes into contact with the rotating horizontal polishing component once, achieving uniform and full-coverage polishing of the entire inner wall. At the same time, since the position of the horizontal polishing component is precisely adjusted and locked in the radial direction, the pressure on the hole wall during processing is constant, avoiding over-polishing or under-polishing caused by uneven feed or insufficient equipment rigidity in traditional reciprocating polishing. This improves the smoothness of the inner hole surface and the consistency of the inner wall roughness, ensuring stable and reliable polishing quality regardless of the hole diameter. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 This is a side view of the structure of the present invention;

[0027] Figure 3 yes Figure 2 Sectional view at point AA;

[0028] Figure 4 yes Figure 2 A three-dimensional structural cross-sectional view of point AA;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0031] Figure 7 This is a three-dimensional structural diagram of the hollow rotary component of the present invention;

[0032] Figure 8 This is a three-dimensional structural diagram of the rotary drive component of the present invention;

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the four-corner pneumatic tooling of the present invention;

[0034] Figure 10 This is a three-dimensional structural diagram of the horizontal polishing assembly of the present invention;

[0035] Figure 11 This is a schematic diagram of the three-dimensional structure of the U-shaped lifting platform of the present invention;

[0036] Figure 12 This is a schematic diagram of the main cross-sectional structure of the U-shaped lifting platform of the present invention;

[0037] Figure 13 This is a three-dimensional cross-sectional view of the synchronous drive component for rotation according to the present invention.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1. Bed base; 2. U-shaped hanging platform; 21. Base; 3. Hollow rotary assembly; 31. Cylindrical seat; 32. Rotary cylinder; 33. External gear ring; 34. Side seat; 35. Flange ring; 4. Rotary drive assembly; 41. Long frame; 42. Motor base; 43. Main motor; 44. Drive shaft; 45. Main gear; 5. Four-corner pneumatic tooling; 51. Disc frame; 52. Convex plate; 53. Thin pneumatic finger; 54. Connecting seat; 55. Support plate; 56. L-shaped back convex plate 6. Longitudinal stage; 7. Horizontal polishing assembly; 71. L-shaped shaft bracket; 72. External spline shaft; 73. Horizontal shaft; 74. Spiral bevel gear; 75. Polishing roller; 8. Lifting assembly; 81. Cylinder; 82. I-beam plate; 83. Vertical pole; 9. T-shaped hollow shaft seat; 10. Main hollow shaft; 11. Internal spline bushing; 12. Control panel; 13. Counter-rotating synchronous drive assembly; 1301. Auxiliary motor; 1302. Gear shaft; 1303. Belt drive structure. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0043] Example 1, by Figures 1 to 6The present invention includes a bed base 1 serving as the foundation for supporting the equipment and a U-shaped hanging platform 2 fixed to the top wall of the bed base 1;

[0044] Hollow rotary assembly 3, two hollow rotary assemblies 3 are set and mirror-symmetrically installed on the left and right sides of the top of the bed 1. Four-corner pneumatic fixtures 5 are installed on the rotating ends of the two hollow rotary assemblies 3 that are far apart. The four-corner pneumatic fixtures 5 are used to center and clamp the square single-hole base from the four corners. A rotary drive assembly 4 is provided at the rear position of the top of the bed 1 to drive the two hollow rotary assemblies 3 to rotate synchronously around their axis.

[0045] The longitudinal platform 6 is located on the side of the hollow rotary assembly 3 away from the four-corner pneumatic tooling 5, and the top of the longitudinal platform 6 is equipped with a horizontal polishing assembly 7 located inside the hollow rotary assembly 3. The top of the bed 1 is equipped with a lifting assembly 8 for controlling the radial position of the horizontal polishing assembly 7 inside the hollow rotary assembly 3.

[0046] The key shaft telescopic structure has two U-shaped lifting platforms 2 installed below the longitudinal platform 6. The key shaft telescopic structure and the horizontal polishing assembly 7 are connected by transmission. A counter-rotation synchronous drive assembly 13 for outputting rotational power to the left and right key shaft telescopic structures is installed in the middle position of the bottom of the U-shaped lifting platform 2. A control panel 12 is installed at the front position of the top of the bed 1. The output end of the control panel 12 is electrically connected to the input end of the rotary drive assembly 4, the lifting assembly 8 and the counter-rotation synchronous drive assembly 13 respectively.

[0047] Example 2, based on Example 1, is... Figure 7 , Figure 8 , Figure 9 and Figure 10 The hollow rotary assembly 3 includes at least one cylindrical base 31 and a rotating cylinder 32 rotatably mounted inside the cylindrical base 31 via ball bearings. The cylindrical base 31 is bolted to one side of the top of the bed 1. An external toothed ring 33 is fixed on the outer circumferential surface of the rotating cylinder 32, and four side seats 34 with a mirror symmetrical structure are welded on the outer wall of the end of the rotating cylinder 32 away from the longitudinal table 6. After the rotation drive assembly 4 synchronously outputs rotational power to the two hollow rotary assemblies 3 on the left and right sides, the rotating cylinder 32 in the cylindrical base 31 rotates on its own axis, and the four-corner pneumatic tooling 5 rotates together with the rotating cylinder 32. At this time, the hollow design of the rotating cylinder 32 allows the horizontal polishing assembly 7 to extend from the inside, solving the problem of spatial interference between moving parts and stationary parts.

[0048] The four-corner pneumatic tooling 5 includes a disc frame 51, a protruding plate 52, a thin pneumatic finger 53, a connecting seat 54, and a support plate 55. The disc frame 51 is detachably mounted on the rotating drum 32 and is concentric with the rotating drum 32. The two protruding plates 52 are fixed on one side of the outer wall of the disc frame 51 and are mirror symmetrical about the vertical middle reference plane of the rotating drum 32. The thin pneumatic finger 53 is mounted on one side of the outer wall of the protruding plate 52. The connecting seat 54 is mounted on the driving end of the thin pneumatic finger 53. The support plate 55 is bolted to one end of the connecting seat 54, and the back of the support plate 55 is integrally formed with an L-shaped back protrusion 56.

[0049] A flange ring 35 is welded to the rotating cylinder 32 on the back of the plate frame 51, and the rotating cylinder 32 is bolted to the plate frame 51 through the flange ring 35;

[0050] The back of the single-hole base to be processed contacts the four side seats 34 at the end of the rotating drum 32, while the thin pneumatic finger 53 drives the two adjacent connecting seats 54 in the radial direction to move closer, and the L-shaped back protrusion 56 on the back of the support plate 55 contacts and abuts the corner of the single-hole base, thereby completing the clamping of the square base. Its clamping force is uniform and controllable, and forces the geometric center of the workpiece to be aligned with the rotation center of the rotating drum 32, ensuring the dynamic balance of the workpiece when rotating at high speed.

[0051] The rotary drive assembly 4 includes a long frame 41 fixed at the rear of the top of the bed 1, a drive shaft 44 rotatably mounted inside the long frame 41 via bearing seats, and main gears 45 fixed at both ends of the drive shaft 44. The main gears 45 mesh with the external gear ring 33. A motor base 42 is fixed on the outer wall of the bed 1 on one side of the long frame 41, and a main motor 43 is mounted on the outer wall of one side of the motor base 42. The output shaft of the main motor 43 is connected to one end of the drive shaft 44 via a coupling. The main motor 43 operates according to the direction, speed, angle, and response time set by the control panel 12. Subsequently, the drive shaft 44 in the long frame 41 is driven to rotate. The drive shaft 44 drives the external gear ring 33 to rotate via the main gear 45, thereby controlling the start, rotation speed, and stop of the workpiece.

[0052] Example 3, based on Example 2, by Figure 10 , Figure 11 , Figure 12 and Figure 13 As shown, the horizontal polishing assembly 7 includes an L-shaped shaft bracket 71, a horizontal shaft 73, a spiral bevel gear 74, and a polishing roller 75;

[0053] L-shaped shaft bracket 71 is bolted to the top of the longitudinal platform 6. Horizontal shaft 73 is rotatably mounted on one side of the outer wall of L-shaped shaft bracket 71 and extends horizontally into the interior of the rotating drum 32. Spiral bevel gear 74 is fixed to one end of horizontal shaft 73. Polishing roller 75 is detachably mounted to the other end of horizontal shaft 73.

[0054] Since the polishing roller 75 is detachably connected to the end of the horizontal shaft 73, it is convenient to replace the consumable parts later. In addition, the length of the polishing roller 75 needs to be greater than the inner hole depth of the single hole base to ensure the fullness of polishing.

[0055] The key shaft telescopic structure includes a T-shaped hollow shaft seat 9 fixed to the bottom of the U-shaped lifting platform 2, a main hollow shaft 10 rotatably mounted inside the T-shaped hollow shaft seat 9, and an inner spline bushing 11 fixed at the lower end of the main hollow shaft 10. An outer spline shaft 72 is rotatably mounted at the bottom of the outer spline shaft 72, and the lower end of the outer spline shaft 72 extends into the interior of the inner spline bushing 11. Another spiral bevel gear 74 is fixed at the upper end of the outer spline shaft 72.

[0056] When controlling the radial position of the horizontal polishing assembly 7 in the rotating drum 32, the outer spline shaft 72 can move along the axial direction of the inner spline bushing 11 and the main hollow shaft 10. After the movement, the outer spline shaft 72 and the inner spline bushing 11 are still in a power engagement state, realizing the stable transmission of rotational power.

[0057] The lifting assembly 8 includes a cylinder 81 installed at the top of the bed 1, uprights 83 fixed at the front and rear positions of the bottom of the longitudinal platform 6, and an I-beam plate 82 fixed at the lower ends of the four uprights 83. The lower end of the piston rod of the cylinder 81 is fixed to the top of the I-beam plate 82. Taking the lifting assembly 8 driving the two longitudinal platforms 6 on the left and right sides to move upward synchronously as an example, the piston rod of the cylinder 81 returns to its original position, causing the I-beam plate 82, uprights 83, longitudinal platform 6, and horizontal polishing assembly 7 to move upward until the grinding part of the horizontal polishing assembly 7 contacts the inner wall of the workpiece, ensuring that the horizontal polishing assembly 7 can obtain appropriate polishing contact pressure under different hole diameters.

[0058] The counter-rotating synchronous drive assembly 13 includes a base 21, an auxiliary motor 1301, a gear shaft 1302, and a belt drive structure 1303;

[0059] The base 21 is fixed at the center of the bottom of the U-shaped platform 2. Two gear shafts 1302 are rotatably mounted on the top of the base 21 and kept in mesh. The auxiliary motor 1301 is mounted on the top of the bed 1, and the lower end of the output shaft of the auxiliary motor 1301 is fixedly connected to the top of one of the gear shafts 1302. The belt drive structure 1303 is installed between the gear shaft 1302 and the main hollow shaft 10. Four internally threaded hexagonal columns are installed at the bottom of the U-shaped platform 2 below the longitudinal platform 6. A flat plate is fixed at the upper end of two adjacent internally threaded hexagonal columns in the length direction of the U-shaped platform 2. The upright 83 passes vertically through the flat plate. The I-plate 82 is located below the base 21.

[0060] After the auxiliary motor 1301 starts upon receiving a command from the control panel 12, the output shaft of the auxiliary motor 1301 drives one of the gear shafts 1302 to rotate. At this time, the two gear shafts 1302 are in a synchronous and reverse state. The gear shaft 1302 transmits power to the corresponding main hollow shaft 10 through the belt drive structure 1303. As a result, the main hollow shaft 10, the inner spline bushing 11, and the outer spline shaft 72 all receive power input. The outer spline shaft 72 uses the spiral bevel gear 74 to reverse the power and cause the horizontal shaft 73 and the polishing roller 75 to rotate. The polishing roller 75 removes burrs and rough edges from the inner hole through contact pressure.

[0061] In this embodiment, two single-hole base workpieces are first removed, and the single-hole bases are fixed to the ends of the hollow rotary assembly 3 using a four-corner pneumatic fixture 5. At this time, the single-hole bases are concentric with the hollow rotary assembly 3 and are firmly locked in a predetermined position by the four-corner pneumatic fixture 5. Then, the control panel 12 is operated according to the specific specifications of the single-hole base to be processed and the diameter of the central hole to enter the human-machine interface of the equipment, so as to control the lifting assembly 8, the rotary drive assembly 4, and the counter-rotation synchronous drive assembly 13 to work. During this process, the lifting assembly 8 drives the left and right longitudinal platforms 6 to rise and fall synchronously according to the instructions of the control panel 12, so that the horizontal polishing assembly 7 moves radially in the internal space of the hollow rotary assembly 3 until the polishing part of the horizontal polishing assembly 7 contacts the inner wall surface of the single-hole base. The processing instructions are issued through the control panel 12, and the rotary drive assembly 4 drives the left and right longitudinal platforms 6 to move radially in the internal space of the hollow rotary assembly 3 until the polishing part of the horizontal polishing assembly 7 contacts the inner wall surface of the single-hole base. The hollow rotary assembly 3, its four-corner pneumatic tooling 5, and the single-hole base workpiece rotate at a constant speed for one revolution. At the same time, the counter-rotating synchronous drive assembly 13 drives the key shaft telescopic structure located on the left and right sides inside the U-shaped lifting platform 2 to start rotating. The key shaft telescopic structure smoothly transmits power from the fixed counter-rotating synchronous drive assembly 13 to the horizontal polishing assembly 7, whose position has changed. Due to the stable rotation of the workpiece, each point on its inner hole wall will pass through the fixed polishing area in sequence. After the workpiece has rotated a full revolution or more than one preset revolution, the burrs on the entire circumference inner wall are uniformly removed. After the processing is completed, the counter-rotating synchronous drive assembly 13 decelerates and stops until the horizontal polishing assembly 7 returns to a standstill. Then, the rotary drive assembly 4 drives the hollow rotary assembly 3 and the four-corner pneumatic tooling 5 to reverse and reset. The four-corner pneumatic tooling 5 releases the clamping force and removes the single-hole base that has completed the inner hole polishing.

[0062] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0063] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0064] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A grinding and polishing equipment for processing the base of a new energy battery rack, comprising a bed (1) serving as the foundation for the equipment and a U-shaped hanging platform (2) fixed to the top wall of the bed (1), characterized in that: Hollow rotary assembly (3), the hollow rotary assembly (3) is configured as two and mirror symmetrically installed on the left and right sides of the top of the bed (1). Four-corner pneumatic fixtures (5) are installed on the rotating ends of the two hollow rotary assemblies (3) that are far apart. The four-corner pneumatic fixtures (5) are used to center and clamp the square single-hole base from the four corners. A rotary drive assembly (4) is provided at the rear position of the top of the bed (1) to drive the two hollow rotary assemblies (3) to rotate synchronously around their axis. The longitudinal platform (6) is located on the side of the hollow rotary assembly (3) away from the four-corner pneumatic tooling (5), and the top of the longitudinal platform (6) is equipped with a horizontal polishing assembly (7) located inside the hollow rotary assembly (3). The top of the bed (1) is equipped with a lifting assembly (8) for controlling the radial position of the horizontal polishing assembly (7) inside the hollow rotary assembly (3). The key shaft telescopic structure has two U-shaped hanging platforms (2) installed below the longitudinal platform (6). The key shaft telescopic structure and the horizontal polishing assembly (7) are connected in a transmission. A counter-rotation synchronous drive assembly (13) for outputting rotational power to the left and right key shaft telescopic structures is installed at the middle position of the bottom of the U-shaped hanging platform (2). A control panel (12) is installed at the front position of the top of the bed (1). The output end of the control panel (12) is electrically connected to the input end of the rotation drive assembly (4), the lifting assembly (8) and the counter-rotation synchronous drive assembly (13).

2. The grinding and polishing equipment for processing a new energy battery frame base according to claim 1, characterized in that: The hollow rotary assembly (3) includes at least one cylinder seat (31) and a rotating cylinder (32) rotatably mounted inside the cylinder seat (31) by ball bearings. The cylinder seat (31) is bolted to one side of the top of the bed (1). An external toothed ring (33) is fixed on the outer circumferential surface of the rotating cylinder (32), and four side seats (34) with a mirror symmetrical structure are welded on the outer wall of the end of the rotating cylinder (32) away from the longitudinal platform (6).

3. The grinding and polishing equipment for processing a new energy battery frame base according to claim 2, characterized in that: The four-corner pneumatic tooling (5) includes a plate frame (51), a protruding plate (52), a thin pneumatic finger (53), a connecting seat (54), and a support plate (55); The disc frame (51) is detachably mounted on the rotating cylinder (32) and is concentric with the rotating cylinder (32). Two protrusions (52) are fixed on one side of the outer wall of the disc frame (51) and are mirror symmetrical about the vertical middle reference plane of the rotating cylinder (32). The thin pneumatic finger (53) is mounted on one side of the outer wall of the protrusion (52). The connecting seat (54) is mounted on the driving end of the thin pneumatic finger (53). The support plate (55) is bolted to one end of the connecting seat (54), and the back of the support plate (55) is integrally formed with an L-shaped back protrusion (56).

4. The grinding and polishing equipment for processing a new energy battery rack base according to claim 3, characterized in that: A flange ring (35) is welded to the rotating cylinder (32) on the back of the tray (51), and the rotating cylinder (32) is bolted to the tray (51) through the flange ring (35).

5. The grinding and polishing equipment for processing a new energy battery frame base according to claim 2, characterized in that: The rotary drive assembly (4) includes a long frame (41) fixed at the rear of the top of the bed (1), a drive shaft (44) rotatably mounted inside the long frame (41) via a bearing seat, and main gears (45) fixed at both ends of the drive shaft (44). The main gears (45) mesh with the external gear ring (33). A motor seat (42) is fixed on the outer wall of the bed (1) on one side of the long frame (41), and a main motor (43) is mounted on the outer wall of one side of the motor seat (42). The output shaft of the main motor (43) is connected to one end of the drive shaft (44) via a coupling.

6. The grinding and polishing equipment for processing a new energy battery rack base according to claim 2, characterized in that: The horizontal polishing assembly (7) includes an L-shaped shaft frame (71), a horizontal shaft (73), a spiral bevel gear (74), and a polishing roller (75). The L-shaped shaft bracket (71) is bolted to the top of the longitudinal platform (6), the horizontal shaft (73) is rotatably mounted on one side of the outer wall of the L-shaped shaft bracket (71) and extends horizontally into the interior of the rotating drum (32), the spiral bevel gear (74) is fixed to one end of the horizontal shaft (73), and the polishing roller (75) is detachably mounted to the other end of the horizontal shaft (73).

7. The grinding and polishing equipment for processing a new energy battery rack base according to claim 6, characterized in that: The key shaft telescopic structure includes a T-shaped hollow shaft seat (9) fixed to the bottom of the U-shaped lifting platform (2), a main hollow shaft (10) rotatably mounted inside the T-shaped hollow shaft seat (9) along the axial direction, and an inner spline bushing (11) fixed at the lower end of the main hollow shaft (10). An outer spline shaft (72) is rotatably mounted at the bottom of the outer spline shaft (72), and the lower end of the outer spline shaft (72) extends into the interior of the inner spline bushing (11). Another spiral bevel gear (74) is fixed at the upper end of the outer spline shaft (72).

8. The grinding and polishing equipment for processing a new energy battery frame base according to claim 7, characterized in that: The lifting assembly (8) includes a cylinder (81) installed at the top of the bed seat (1), uprights (83) fixed at the front and rear positions of the bottom of the longitudinal platform (6), and an I-beam (82) fixed at the lower ends of the four uprights (83). The lower end of the piston rod of the cylinder (81) is fixed to the top of the I-beam (82).

9. The grinding and polishing equipment for processing a new energy battery rack base according to claim 8, characterized in that: The counter-rotating synchronous drive assembly (13) includes a base (21), an auxiliary motor (1301), a gear shaft (1302), and a belt drive structure (1303). The base (21) is fixed at the center of the bottom of the U-shaped platform (2). Two gear shafts (1302) are rotatably mounted on the top of the base (21) and kept in mesh. The auxiliary motor (1301) is mounted on the top of the bed (1), and the lower end of the output shaft of the auxiliary motor (1301) is fixedly connected to the top of one of the gear shafts (1302). The belt drive structure (1303) is installed between the gear shaft (1302) and the main hollow shaft (10).

10. The grinding and polishing equipment for processing a new energy battery frame base according to claim 9, characterized in that: The bottom of the U-shaped platform (2) below the longitudinal platform (6) is equipped with four internally threaded hexagonal columns. The upper ends of two adjacent internally threaded hexagonal columns in the length direction of the U-shaped platform (2) are fixed with flat plates. The upright (83) passes vertically through the flat plate, and the I-beam (82) is located below the base (21).

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