Grinding device for steel ball production

Abstract

The invention relates to the technical field of steel ball production, and discloses a steel ball production grinding device which comprises a bottom plate, a U-shaped frame is fixedly connected to the upper surface of the bottom plate, rotating rods are rotationally connected to the inner walls of the two sides of the U-shaped frame, and a lower grinding assembly for grinding steel balls is arranged between the two rotating rods. An upper grinding assembly for grinding the steel balls is arranged on the outer wall of the top of the U-shaped frame and located over the lower grinding assembly through a telescopic assembly, and a positioning assembly for positioning the rotating rod is arranged between the inner walls of the two sides of the U-shaped frame and located between the bottom plate and the lower grinding assembly. According to the steel ball grinding device, the upper grinding assembly and the lower grinding assembly are used in cooperation, the upper half ball and the lower half ball of a steel ball can be ground at the same time when the steel ball is ground, the grinding efficiency is effectively improved, meanwhile, the steel ball is elastically pressed so that the eccentric load of single-side grinding can be counteracted, and the steel ball can keep dynamic balance in the grinding track.

Description

Technical Field

[0001] The present invention relates to the technical field of steel ball production, and particularly to a grinding device for steel ball production. Background Art

[0002] In the field of precision machinery manufacturing, steel balls, as basic components of core components such as bearings, valves, and precision instruments, their surface roughness, roundness, and dimensional consistency directly determine the operating accuracy and lifespan of the equipment. Currently, the large-scale production of steel balls usually requires multiple processes such as cold heading forming, heat treatment, rough grinding, fine grinding, and polishing. Among them, the grinding link is the key step to improve the geometric accuracy and surface quality of steel balls.

[0003] After retrieval, a Chinese patent with the publication number CN220498806U discloses a steel ball lapping machine that is convenient to adjust. This device solves the problem that the pot bodies on the existing steel ball lapping machines are all fixedly connected. After grinding a batch of steel balls, generally, the height of the lifting grinding disc is first adjusted to a suitable position, and then the steel balls are taken out. It is impossible to adjust the vertical position of the pot body, which is rather troublesome when taking them by hand. However, there are still the following several problems:

[0004] 1. When grinding steel balls, this device only uses a single-layer grinding disc for grinding operations. Although the single-layer grinding disc structure can ensure the processing quality, the output per unit time is low;

[0005] 2. During the grinding process, the movement trajectory of the steel balls is random. In this way, during the grinding process, the steel balls are prone to random deviation due to centrifugal force or friction, which affects the grinding accuracy. Summary of the Invention

[0006] Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a grinding device for steel ball production, mainly to solve the problems that when grinding steel balls, this device only uses a single-layer grinding disc for grinding operations. Although the single-layer grinding disc structure can ensure the processing quality, the output per unit time is low, and during the grinding process, the movement trajectory of the steel balls is random. In this way, during the grinding process, the steel balls are prone to random deviation due to centrifugal force or friction, which affects the grinding accuracy.

[0008] Technical Solutions

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A grinding device for steel ball production, including a bottom plate, on the upper surface of the bottom plate is fixedly connected with a U-shaped frame. On both inner walls of the U-shaped frame are rotatably connected with rotating rods. Between the two rotating rods is provided a lower grinding component for grinding steel balls. Above the lower grinding component and on the outer wall of the top of the U-shaped frame is provided an upper grinding component for grinding steel balls through a telescopic component. Between the two inner walls of the U-shaped frame and between the bottom plate and the lower grinding component is provided a positioning component for positioning the rotating rods.

[0011] Further, the lower grinding component includes a cylinder fixedly connected between the two rotating rods, and the top of the cylinder is open. On the inner wall of the bottom of the cylinder is rotatably connected a lower grinding disc for grinding steel balls. On the upper surface of the lower grinding disc are provided a plurality of grinding grooves with the same center but different radii. On the outer wall of the bottom of the cylinder is fixedly connected a driving motor for rotating the lower grinding disc along the axial direction.

[0012] On the basis of the foregoing solution, on the circumferential outer wall of the cylinder is provided a discharge port adapted to it. On the circumferential outer wall of the cylinder and on the opposite side of the discharge port is fixedly connected a handle for rotating the cylinder.

[0013] As a further solution of the present invention, the telescopic component includes a cylinder 1 fixedly connected to the outer wall of the top of the U-shaped frame. The output end of the cylinder 1 passes through the inner wall of the top of the U-shaped frame and is fixedly connected with a connection plate. A plurality of connecting rods are slidably connected through the connection plate in a circular array. The bottom ends of the plurality of connecting rods are fixedly connected with a chassis. Between the upper surface of the chassis and the connection plate are fixedly connected a plurality of springs in a circular array. On the upper surface of the chassis are fixedly connected two symmetric guide rods, and the top ends of the two guide rods both pass through the outer wall of the top of the U-shaped frame and are slidably connected thereto.

[0014] Further, the upper grinding component includes a plurality of avoidance openings provided on the chassis in a circular array. In each of the plurality of avoidance openings is slidably connected an arc-shaped clamping block. The bottom of the plurality of arc-shaped clamping blocks is fixedly connected with an upper grinding disc. Between the chassis and each of the plurality of arc-shaped clamping blocks is provided a quick-release component for quickly locking and disassembling the arc-shaped clamping blocks.

[0015] On the basis of the foregoing solution, the positioning component includes a cross plate fixedly connected between the two inner walls of the U-shaped frame. On both inner walls of the U-shaped frame and between the cross plate and the rotating rod are fixedly connected guide blocks. On the lower surface of the cross plate is fixedly connected a cylinder 2. The output end of the cylinder 2 passes through the upper surface of the cross plate and is fixedly connected with a U-shaped rod, and the top end of the U-shaped rod passes through the two guide blocks. The top ends of the U-shaped rod are both fixedly connected with U-shaped clamping plates for cooperating with positioning blocks.

[0016] As a further solution of the present invention, the quick-release component includes arc-shaped bayonets penetrating through a plurality of arc-shaped clamping blocks. The upper surface of the chassis is rotatably connected with a rotating disk. On the circumferential outer wall of the rotating disk, L-shaped clamping plates are fixedly connected, which are equal in number to and correspond one by one to the arc-shaped clamping blocks, and one end of the L-shaped clamping plate is completely inserted into the arc-shaped bayonet.

[0017] Furthermore, two through holes are respectively formed on the upper surfaces of two of the arc-shaped clamping blocks, and insertion holes for cooperating with the through holes are respectively formed on two corresponding L-shaped clamping plates. A U-shaped clamping frame for cooperating with the insertion holes is slidably connected in the two through holes.

[0018] Beneficial effects

[0019] Compared with the prior art, the present invention provides a grinding device for steel ball production, which has the following beneficial effects:

[0020] 1. By the combined use of the upper grinding component and the lower grinding component, the present invention can simultaneously grind the upper and lower hemispheres of the steel ball during the grinding process of the steel ball, effectively improving the grinding efficiency. At the same time, the steel ball is elastically pressed to offset the eccentric load of unilateral grinding, so that the steel ball maintains dynamic balance in the grinding track.

[0021] 2. The grinding grooves formed on the lower grinding disk of the present invention guide the steel balls to roll on the lower grinding disk along a preset track through a fixed path, avoiding the random deviation of the steel balls due to the difference in centrifugal force or friction force, ensuring that the contact time and pressure distribution of each steel ball with the grinding surface are consistent, and reducing the surface precision deviation.

[0022] 3. Through the clamping structure of the rotating disk and the L-shaped clamping plate in combination with the arc-shaped clamping block, the present invention realizes the integrated and quick disassembly and assembly of the grinding component, which can facilitate the staff to quickly replace the upper grinding disk and effectively improve the efficiency of replacing the upper grinding disk.

[0023] 4. By the provided positioning component, the present invention can ensure that the cylinder is always in a horizontal state during the processing of the steel ball, avoiding the deviation of the steel ball grinding caused by the inclination of the cylinder.

[0024] 5. By setting the state between the cylinder and the U-shaped frame to be rotatable, the present invention can tilt and pour out the steel balls and the generated debris inside after a group of steel balls are ground, facilitating the feeding process of the steel balls. Description of the drawings

[0025] Figure 1 It is a front-side three-dimensional structural schematic diagram of a grinding device for steel ball production proposed by the present invention;

[0026] Figure 2 It is a rear-side three-dimensional structural schematic diagram of a grinding device for steel ball production proposed by the present invention;

[0027] Figure 3 Schematic structural diagram of the lower grinding assembly of a grinding device for steel ball production proposed by the present invention;

[0028] Figure 4 Schematic structural diagram of the cooperation between the telescopic assembly and the upper grinding assembly of a grinding device for steel ball production proposed by the present invention;

[0029] Figure 5 Schematic structural diagram of the positioning assembly of a grinding device for steel ball production proposed by the present invention;

[0030] Figure 6 Exploded structural diagram of the upper grinding assembly of a grinding device for steel ball production proposed by the present invention.

[0031] In the figure: 1, bottom plate; 2, U-shaped frame; 3, rotating rod; 4, lower grinding assembly; 401, cylinder; 402, lower grinding disc; 403, grinding groove; 404, discharge port; 405, handle; 406, driving motor; 5, telescopic assembly; 501, cylinder one; 502, connecting plate; 503, connecting rod; 504, chassis; 505, spring; 506, guide rod; 6, upper grinding assembly; 601, upper grinding disc; 602, arc-shaped clamping block; 603, avoidance opening; 7, positioning assembly; 7, positioning assembly; 701, positioning block; 702, cross plate; 703, cylinder two; 704, guide block; 705, U-shaped rod; 706, U-shaped clamping plate; 8, quick-release assembly; 801, rotating disc; 802, L-shaped clamping plate; 803, arc-shaped clamping opening; 804, through hole; 805, jack; 806, U-shaped clamping frame. Specific embodiments

[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Reference Figures 1-6 A grinding device for steel ball production comprises a bottom plate 1, a U-shaped frame 2 is fixedly connected to the upper surface of the bottom plate 1 by bolts, rotating rods 3 are rotatably connected to the inner walls of both sides of the U-shaped frame 2, a lower grinding assembly 4 for grinding steel balls is arranged between the two rotating rods 3, an upper grinding assembly 6 for grinding steel balls is arranged on the top outer wall of the U-shaped frame 2 and directly above the lower grinding assembly 4 through a telescopic assembly 5, a positioning assembly 7 for positioning the rotating rod 3 is arranged between the inner walls of both sides of the U-shaped frame 2 and between the bottom plate 1 and the lower grinding assembly 4, when in use, the upper grinding assembly 6 is first raised to be separated from the lower grinding assembly 4 by the telescopic assembly 5, and then continued to be raised to be connected to the lower grinding assembly 4. There is space between the grinding components 4 for the convenience of staff operation, and then the steel ball is placed in the lower grinding component 4, and then the telescopic component 5 is started to move the upper grinding component 6 downward until it contacts the steel ball, and then the steel ball is ground. After the grinding is completed, the telescopic component 5 is started to raise the upper grinding component 6 until there is space for operation between it and the lower grinding component 4, and the positioning component 7 is moved down to make it out of contact with the rotating rod 3, and then the lower grinding component 4 is rotated to discharge the ground steel balls. After the steel balls are completely discharged, the lower grinding component 4 is reset and the rotating rod 3 is positioned by the positioning component 7, and then the new steel balls that need to be ground are replaced and the above steps are repeated.

[0036] In the present invention, the lower grinding assembly 4 includes a cylinder 401 fixedly connected between two rotating rods 3 by bolts, and the top of the cylinder 401 is open. A lower grinding disc 402 for grinding steel balls is rotatably connected to the bottom inner wall of the cylinder 401. A plurality of grinding grooves 403 with the same center and different radii are formed on the upper surface of the lower grinding disc 402. A driving motor 406 for rotating the lower grinding disc 402 along the axial direction is fixedly connected to the bottom outer wall of the cylinder 401 by bolts. During use, the steel balls to be ground are first placed on the grinding grooves 403 of the lower grinding disc 402 in the cylinder 401. The grinding grooves 403 formed on the lower grinding disc 402 guide the steel balls to roll on the lower grinding disc 402 along a preset trajectory through a fixed path, avoiding random deviation of the steel balls due to centrifugal force or friction force differences, ensuring that the contact time and pressure distribution of each steel ball with the grinding surface are consistent, and reducing the surface precision deviation.

[0037] In the present invention, the telescopic assembly 5 includes a first cylinder 501 fixedly connected to the outer wall of the top of the U-shaped frame 2 by bolts. The output end of the first cylinder 501 passes through the inner wall of the top of the U-shaped frame 2 and is fixedly connected with a connecting plate 502 by bolts. A plurality of connecting rods 503 are slidably connected through the connecting plate 502 in an annular array. The bottom ends of the plurality of connecting rods 503 are fixedly connected with a chassis 504 by bolts. A plurality of springs 505 are welded between the upper surface of the chassis 504 and the connecting plate 502 in an annular array. The upper surface of the chassis 504 is fixedly connected with two symmetric guide rods 506 by bolts. The tops of the two guide rods 506 pass through the outer wall of the top of the U-shaped frame 2 and are slidably connected therewith. The upper grinding assembly 6 includes a plurality of avoidance openings 603 formed in the chassis 504 in an annular array. An arc-shaped clamping block 602 is slidably connected in each of the plurality of avoidance openings 603. The bottom of the plurality of arc-shaped clamping blocks 602 is fixedly connected with an upper grinding disc 601 by bolts. During use, start the first cylinder 501 to extend, thereby driving the connecting plate 502 to move downward. During the downward movement of the connecting plate 502, it will drive the chassis 504 to move downward until the upper grinding disc 601 below it is in close contact with the steel ball, then stop the first cylinder 501. At this time, the spring 505 is compressed and applies a downward force to the chassis 504 to squeeze the steel ball. After the upper grinding disc 601 is in close contact with the steel ball, start the drive motor 406 to drive the lower grinding disc 402 to rotate, so that the steel ball rotates and grinds between the lower grinding disc 402 and the upper grinding disc 601. By using the upper grinding assembly 6 and the lower grinding assembly 4 in cooperation, when grinding the steel ball, the steel ball can be elastically pressed to offset the eccentric load of unilateral grinding, so that the steel ball maintains dynamic balance in the grinding trajectory. A quick-release assembly 8 for quickly locking and disassembling the arc-shaped clamping block 602 is provided between the chassis 504 and each of the plurality of arc-shaped clamping blocks 602. The quick-release assembly 8 includes an arc-shaped bayonet 803 formed through the plurality of arc-shaped clamping blocks 602. A rotating disc 801 is rotatably connected to the upper surface of the chassis 504. L-shaped clamping plates 802 with the same number as the arc-shaped clamping blocks 602 and corresponding to each other are fixedly connected to the circumferential outer wall of the rotating disc 801 by bolts. One end of the L-shaped clamping plate 802 is completely inserted into the arc-shaped bayonet 803. Two through holes 804 are formed in the upper surfaces of two of the arc-shaped clamping blocks 602. Jack holes 805 for cooperating with the through holes 804 are formed in the corresponding two L-shaped clamping plates 802. A U-shaped card frame 806 for cooperating with the jack holes 805 is slidably connected in the two through holes 804. When it is necessary to replace the upper grinding disc 601, first pull out the two U-shaped card frames 806 upward, and then rotate the rotating disc 801 to drive the plurality of L-shaped clamping plates 802 to rotate synchronously. While the L-shaped clamping plates 802 rotate, they slide along the arc-shaped bayonets 803 on the arc-shaped clamping blocks 602. When the L-shaped clamping plates 802 are completely disengaged from the arc-shaped bayonets 803, the upper grinding disc 601 can be moved downward and disassembled. Take out the new upper grinding disc 601 and reverse the above steps to complete the replacement.Through the clamping structure of the rotating disk 801 and the L-shaped clamping plate 802 jointly cooperating with the arc-shaped clamping block 602, the integrated and rapid disassembly and assembly of the grinding assembly are realized, which can facilitate the staff to quickly replace the upper grinding disk 601, and effectively improve the efficiency of replacing the upper grinding disk 601.

[0038] In the present invention, a discharge port 404 adapted to it is provided on the circumferential outer wall of the cylinder 401. A handle 405 for rotating the cylinder 401 is fixedly connected by bolts on the circumferential outer wall of the cylinder 401 and on the opposite side of the discharge port 404. The positioning assembly 7 includes a cross plate 702 fixedly connected by bolts between the inner walls on both sides of the U-shaped frame 2. Guide blocks 704 are fixedly connected by bolts on the inner walls on both sides of the U-shaped frame 2 and between the cross plate 702 and the rotating rod 3. A cylinder two 703 is fixedly connected by bolts to the lower surface of the cross plate 702. The output end of the cylinder two 703 passes through the upper surface of the cross plate 702 and is fixedly connected by bolts to a U-shaped rod 705. And the top end of the U-shaped rod 705 passes through the two guide blocks 704. U-shaped clamping plates 706 adapted to the positioning blocks 701 are fixedly connected by bolts to the top ends of the U-shaped rod 705. After grinding is completed, restart the cylinder one 501 to contract, drive the upper grinding disk 601 to move upward through the connecting disk 502 and the chassis 504 until there is a space for the staff to operate between the upper grinding disk 601 and the cylinder 401. Then start the cylinder two 703 to contract, thereby driving the U-shaped rod 705 to move downward along the guide block 704. During the downward movement of the U-shaped rod 705, the U-shaped clamping plate 706 at its end will move downward until it disengages from the positioning block 701 and continues to move downward for a certain distance to avoid interference for the subsequent rotation of the positioning block 701. The staff rotates the cylinder 401 along the rotating rod 3 by lifting the handle 405, so that the steel balls after grinding inside it roll towards the direction of the discharge port 404, and then the steel balls and debris are completely discharged. Then rotate the cylinder 401 in the reverse direction to keep it in the horizontal position. Then start the cylinder two 703 to extend, thereby driving the U-shaped rod 705 to move upward until the U-shaped clamping plate 706 at its end clamps the positioning block 701. Then put the new steel balls to be ground into the grinding grooves 403 of the lower grinding disk 402 in the cylinder 401 and wait for grinding. Repeat this process. By providing the positioning assembly 7, it can be ensured that the cylinder 401 is always in the horizontal state during the processing of the steel balls, and avoid the situation that the grinding of the steel balls is deviated due to the inclination of the cylinder 401. By setting the state between the cylinder 401 and the U-shaped frame 2 to be rotatable, the steel balls and the generated debris inside it can be tilted out after a group of steel balls are ground, which is convenient for the feeding process of the steel balls.

[0039] The present invention is used in the following steps:

[0040] S1: When in use, first place the steel balls to be ground on the grinding grooves 403 of the lower grinding plate 402 inside the cylinder 401, and then start the first cylinder 501 to extend, thereby driving the connecting plate 502 to move downward. During the downward movement of the connecting plate 502, it will drive the chassis 504 to move downward until the upper grinding plate 601 below it is in close contact with the steel balls, then stop the first cylinder 501. At this time, the spring 505 is compressed under force and applies a downward force to the chassis 504 to squeeze the steel balls;

[0041] S2: After the upper grinding plate 601 is in close contact with the steel balls, start the drive motor 406 to drive the lower grinding plate 402 to rotate, thereby enabling the steel balls to rotate and grind between the lower grinding plate 402 and the upper grinding plate 601;

[0042] S3: After grinding is completed, restart the first cylinder 501 to contract, and drive the upper grinding plate 601 to move upward through the connecting plate 502 and the chassis 504 until there is a space that allows the staff to operate between the upper grinding plate 601 and the cylinder 401;

[0043] S4: Then start the second cylinder 703 to contract, thereby driving the U-shaped rod 705 to move downward along the guide block 704. During the downward movement of the U-shaped rod 705, it will drive the U-shaped clamping plate 706 at its end to move downward until it disengages from the positioning block 701 and continues to move downward for a certain distance to avoid interference for the subsequent rotation of the positioning block 701;

[0044] S5: Then the staff rotates the cylinder 401 along the rotating rod 3 by lifting the grip 405, thereby making the ground steel balls inside it roll towards the direction of the discharge port 404. After completely discharging the steel balls and debris, rotate the cylinder 401 in the reverse direction to keep it in a horizontal position;

[0045] S6: Then start the second cylinder 703 to extend, thereby driving the U-shaped rod 705 to move upward until the U-shaped clamping plate 706 at its end locks the positioning block 701. Then place the new steel balls to be ground on the grinding grooves 403 of the lower grinding plate 402 inside the cylinder 401 and wait for grinding. Repeat this process;

[0046] S7: When it is necessary to replace the upper grinding plate 601, first pull out the two U-shaped brackets 806 upward, then rotate the rotating disk 801 to drive the multiple L-shaped clamping plates 802 to rotate synchronously. While the L-shaped clamping plates 802 are rotating, they slide along the arc-shaped clamping openings 803 on the arc-shaped clamping blocks 602. When the L-shaped clamping plates 802 are completely disengaged from the arc-shaped clamping openings 803, the upper grinding plate 601 can be moved downward and disassembled. Take out the new upper grinding plate 601 and reverse the above steps to complete the replacement.

[0047] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0048] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A grinding device for steel ball production, comprising a bottom plate (1), characterized in that, The upper surface of the bottom plate (1) is fixedly connected with a U-shaped frame (2). Rotating rods (3) are rotatably connected to the inner walls on both sides of the U-shaped frame (2). A lower grinding assembly (4) for grinding steel balls is arranged between the two rotating rods (3). An upper grinding assembly (6) for grinding steel balls is arranged above the lower grinding assembly (4) through a telescopic assembly (5) on the outer wall of the top of the U-shaped frame (2). A positioning assembly (7) for positioning the rotating rods (3) is arranged between the inner walls on both sides of the U-shaped frame (2) and between the bottom plate (1) and the lower grinding assembly (4).

2. The grinding device for steel ball production according to claim 1, wherein, The lower grinding assembly (4) includes a cylinder (401) fixedly connected between the two rotating rods (3), and the top of the cylinder (401) is open. A lower grinding disc (402) for grinding steel balls is rotatably connected to the inner wall of the bottom of the cylinder (401). A plurality of grinding grooves (403) with the same center and different radii are formed on the upper surface of the lower grinding disc (402). A driving motor (406) for rotating the lower grinding disc (402) along the axial direction is fixedly connected to the outer wall of the bottom of the cylinder (401).

3. The grinding device for steel ball production according to claim 2, characterized in that, A discharge port (404) matched with the cylinder (401) is formed on the circumferential outer wall of the cylinder (401). A handle (405) for rotating the cylinder (401) is fixedly connected to the circumferential outer wall of the cylinder (401) on the opposite side of the discharge port (404).

4. A grinding device for steel ball production according to claim 1, characterized in that, The telescopic assembly (5) includes a cylinder one (501) fixedly connected to the outer wall of the top of the U-shaped frame (2). The output end of the cylinder one (501) passes through the inner wall of the top of the U-shaped frame (2) and is fixedly connected with a connecting disc (502). A plurality of connecting rods (503) are slidably connected through the connecting disc (502) in an annular array. The bottom ends of the plurality of connecting rods (503) are fixedly connected with a chassis (504). A plurality of springs (505) are fixedly connected between the upper surface of the chassis (504) and the connecting disc (502) in an annular array. The upper surface of the chassis (504) is fixedly connected with two symmetric guide rods (506), and the top ends of the two guide rods (506) both pass through the outer wall of the top of the U-shaped frame (2) and are slidably connected with it.

5. The grinding device for steel ball production according to claim 4, wherein, The upper grinding assembly (6) includes a plurality of avoidance openings (603) formed in the chassis (504) in an annular array. Arc-shaped blocks (602) are slidably connected in the plurality of avoidance openings (603). An upper grinding disc (601) is fixedly connected to the bottom of the plurality of arc-shaped blocks (602). A quick-release assembly (8) for quickly locking and disassembling the arc-shaped blocks (602) is arranged between the chassis (504) and the plurality of arc-shaped blocks (602).

6. The grinding device for steel ball production according to claim 1, characterized in that, The positioning component (7) includes a cross plate (702) fixedly connected between the inner walls on both sides of the U-shaped frame (2). Guide blocks (704) are fixedly connected to the inner walls on both sides of the U-shaped frame (2) and located between the cross plate (702) and the rotating rod (3). A second cylinder (703) is fixedly connected to the lower surface of the cross plate (702). The output end of the second cylinder (703) passes through the upper surface of the cross plate (702) and is fixedly connected to a U-shaped rod (705). The top end of the U-shaped rod (705) passes through the two guide blocks (704), and U-shaped clamping plates (706) used in cooperation with the positioning blocks (701) are fixedly connected to the top ends of the U-shaped rod (705).

7. The grinding device for steel ball production according to claim 5, characterized in that, The quick-release component (8) includes arc-shaped bayonets (803) opened through on a plurality of arc-shaped clamping blocks (602). A rotating disk (801) is rotatably connected to the upper surface of the chassis (504). L-shaped clamping plates (802) that are equal in number to and correspond one by one to the arc-shaped clamping blocks (602) are fixedly connected to the circumferential outer wall of the rotating disk (801), and one end of the L-shaped clamping plate (802) is completely inserted into the arc-shaped bayonet (803).

8. A grinding device for steel ball production according to claim 7, characterized in that, Two through holes (804) are opened on the upper surfaces of two of the arc-shaped clamping blocks (602). Jacks (805) used in cooperation with the through holes (804) are opened on the two corresponding L-shaped clamping plates (802). A U-shaped clamping frame (806) used in cooperation with the jacks (805) is slidably connected in the two through holes (804).

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