Multi-stage grinding device for metal balls

Abstract

The utility model relates to a multi-stage grinding device for metal balls. The multi-stage grinding device comprises a first-stage grinding unit, a second-stage grinding unit, a conveying disc, a conveying pipeline, a third-stage grinding unit and a collecting barrel; the lower portion of the material barrel shell communicates with the second-stage grinding unit and conveys balls to the second-stage grinding unit. A spiral grinding piece is arranged in the spiral grinding piece pipeline, the first motor drives the spiral grinding piece to rotate through a gear, and a ball bead outlet is formed in the charging groove and leads to the conveying disc. The lower part of the conveying disc is connected with a conveying pipeline and conveys the balls to the third-stage grinding unit; the motor II drives the upper grinding disc and the lower grinding disc to rotate; and the collecting barrel is arranged below the third-stage grinding unit. According to the utility model, the grinding efficiency is obviously improved, and the high efficiency, continuity and consistency of surface processing are realized.

Description

Technical Field

[0001] This utility model relates to the field of metal processing and surface treatment technology, and in particular to a multi-stage grinding device for metal balls. Background Technology

[0002] Surface finishing and grinding processes for metal balls are widely used in precision instruments and other fields. In these applications, the surface finish, dimensional accuracy, and shape consistency of the metal balls have a significant impact on the service life, performance, and safety of the components. Given the precision machining requirements of metal balls, grinding and polishing processes have become crucial surface treatment methods. Traditional ball grinding equipment typically employs a single-stage grinding process, using only one grit size of grinding media, which is insufficient to effectively remove surface roughness layers, reduce defects, and achieve high surface finish. This method is not only inefficient but also has weak control over dimensional consistency and accuracy. Especially when metal balls need to meet nanoscale or micrometer-level surface roughness requirements, single-stage grinding is often inefficient and ineffective, and prone to defects. To overcome the limitations of single-stage grinding, multi-stage grinding processes have been increasingly used in metal ball processing in recent years. Multi-stage grinding processes use grinding media of different grit sizes for graded grinding, progressing from coarse and semi-fine grinding to fine grinding, gradually reducing surface defects and refining surface roughness. Multi-stage grinding not only improves machining accuracy but also optimizes the uniformity and smoothness of the ball surface, better meeting the demands of high-performance and high-reliability products. Furthermore, the introduction of automation technology has significantly improved the efficiency and consistency of multi-stage grinding equipment. By setting and adjusting the grinding parameters at each stage (such as grinding time and grinding pressure), machining consistency can be greatly controlled and improved.

[0003] However, the realization of multi-stage grinding technology also brings severe technical challenges, including how to achieve stable transmission of multi-stage grinding units, automatic replenishment and replacement of media at different stages, and ensuring mass production while ensuring batch production. Therefore, multi-stage grinding devices that integrate automated control, media exchange and multi-stage transmission have become an effective means to solve these technical bottlenecks. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage grinding device for metal balls to solve the problems in the prior art.

[0005] The technical solution of this utility model is: a multi-stage grinding device for metal balls, the multi-stage grinding device including a primary grinding unit, a secondary grinding unit, a loading trough, a deflector, a conveying disc, a conveying pipe, a tertiary grinding unit and a collection bucket;

[0006] The primary grinding unit includes a spiral blade and a material barrel shell. The spiral blade is disposed inside the material barrel shell, and the lower part of the material barrel shell is connected to the secondary grinding unit and transmits balls to the secondary grinding unit.

[0007] The secondary grinding unit includes a motor, gears, a spiral grinding disc pipe and a loading trough. One end of the spiral grinding disc pipe is the ball transmission position, and the other end is set in the loading trough. Spiral grinding discs are installed in the spiral grinding disc pipe. The motor drives the spiral grinding discs to rotate through the gears. The loading trough has a ball outlet leading to the conveying disc.

[0008] The paddle is set inside the conveying disc, and the lower part of the conveying disc is connected to the conveying pipe, which conveys the balls to the three-stage grinding unit;

[0009] The three-stage grinding unit includes an upper grinding disc, a lower grinding disc inner disc, a lower grinding disc outer disc, and a second motor, which drives the upper and lower grinding discs to rotate.

[0010] The collection bucket is located below the three-stage grinding unit.

[0011] Preferably, the spiral grinding disc channels are arranged at an angle, and there are a total of 16 spiral grinding disc channels. The spiral grinding discs are diamond grinding discs.

[0012] Preferably, the loading trough and the conveying disc are arranged on an inclined surface, and the horizontal height of the loading trough is higher than the horizontal height of the conveying disc.

[0013] Preferably, the second motor consists of two motors, which drive the upper grinding disc and the lower grinding disc respectively.

[0014] Preferably, the primary grinding unit, the secondary grinding unit, and the tertiary grinding unit are equipped with grinding media sensors.

[0015] The beneficial effects of this utility model are:

[0016] (1) Multi-stage grinding unit structure. The device adopts a multi-stage grinding unit series structure, with each unit configured with different grinding media to achieve graded coarse grinding, semi-fine grinding and fine grinding. This can gradually eliminate surface defects, significantly improve the smoothness and consistency of the ball surface, and enable the ball surface to meet the precision requirements;

[0017] (2) Automatic conveying. This device can accurately convey the balls from one grinding unit to the next, reducing damage and tension to the balls during the conveying process, ensuring the continuity and consistency of the processing, and greatly improving production efficiency;

[0018] (3) Adjustable grinding parameters. The control box of the device can adjust the grinding time, pressure, and other parameters of each unit according to the needs of each grinding stage. Through automatic adjustment, the grinding process can be controlled more precisely, adapting to metal balls of different materials and specifications, and ensuring highly consistent processing quality;

[0019] (4) Automatic monitoring of grinding media. Each grinding unit is equipped with a grinding media sensor. When the sensor detects that the particle size or wear level of the media has reached the set value, it will issue an alert, which improves production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional view of the three-stage grinding unit.

[0022] In the diagram, 1 is the spiral blade, 2 is the outer shell of the material bucket, 3 is motor one, 4 is the gear, 5 is the grinding media sensor, 6 is the spiral grinding disc pipe, 7 is motor two, 8 is the loading trough, 9 is the paddle, 10 is the conveying disc, 11 is the three-stage grinding unit, 12 is the collection bucket, 13 is the control box, 14 is the conveying pipe, 15 is the upper grinding disc, 16 is the inner disc of the lower grinding disc, and 17 is the outer disc of the lower grinding disc. Detailed Implementation

[0023] A multi-stage grinding device for metal balls, the multi-stage grinding device comprising a primary grinding unit, a secondary grinding unit, a loading trough 8, a paddle 9, a conveying disc 10, a conveying pipe 14, a tertiary grinding unit 11, and a collection bucket 12;

[0024] The primary grinding unit includes a spiral blade 1 and a material barrel shell 2. The spiral blade 1 is disposed inside the material barrel shell 2. The lower part of the material barrel shell 2 is connected to the secondary grinding unit and transmits balls to the secondary grinding unit.

[0025] The secondary grinding unit includes a motor 3, a gear 4, a spiral grinding disc pipe 6, and a loading trough 8. One end of the spiral grinding disc pipe 6 is the ball transmission position, and the other end is set in the loading trough 8. Spiral grinding discs are installed in the spiral grinding disc pipe 6. The motor 3 drives the spiral grinding disc pipe 6 to rotate through the gear 4. The loading trough 8 has a ball outlet leading to the conveying disc 10.

[0026] The paddle 9 is disposed inside the conveying disc 10, and the lower part of the conveying disc 10 is connected to the conveying pipe 14, which conveys the balls to the three-stage grinding unit 11.

[0027] The three-stage grinding unit 11 includes an upper grinding disc 15, a lower grinding disc inner disc 16, a lower grinding disc outer disc 17, and a second motor 7, wherein the second motor 7 drives the upper grinding disc 15 and the lower grinding disc to rotate.

[0028] The collection bucket 12 is located below the three-stage grinding unit 11.

[0029] The spiral grinding disc channel 6 is inclined, and there are 16 spiral grinding disc channels 6 in total. The spiral grinding discs are diamond grinding discs.

[0030] The loading trough 8 and the conveying disc 10 are arranged on an inclined surface, and the horizontal height of the loading trough 8 is higher than the horizontal height of the conveying disc 10.

[0031] The motor 7 consists of two motors, which drive the upper grinding disc 15 and the lower grinding disc respectively.

[0032] The first-level grinding unit, the second-level grinding unit, and the third-level grinding unit 11 are equipped with grinding media sensors 5.

[0033] The working process of this utility model is as follows: After the equipment is powered on, the balls are poured in from the top. The balls pass through the spiral track inside the cylindrical material tank. The spiral blade 1 can rotate to prevent the balls from accumulating. The balls achieve coarse grinding during their descent and rolling process. There is a conical opening at the bottom of the cylindrical material tank, where an image sensor is placed. Combined with the control box, the opening can be closed to control the number of balls entering the secondary grinding unit.

[0034] The ball bearings enter the fine spiral grinding disc channel 6 of the secondary grinding unit. The spiral grinding discs inside the channel are rotated by the servo motor 3 located on the side and rear, thus achieving semi-fine grinding of the ball bearings. There are 16 spiral grinding disc channels 6 in total, divided into two groups of 8. Each group is equipped with 8 gears 4, which mesh with each other. The channels are operated simultaneously by the motor 3, greatly improving efficiency.

[0035] After thorough grinding in the secondary grinding unit, the ball bearings achieve semi-finish grinding. The ball bearings are transported in an orderly manner via an inclined plane, conveyor disc 10, paddle 9, and conveyor pipe 14 to the tertiary grinding unit 11. The tertiary grinding unit 11 employs a high-precision dual-rotation grinding method, where both the upper and lower grinding discs are rotatable. The material is fine-grained diamond, and a media sensor 5 is located on the side to detect and automatically replenish the diamond media on the upper grinding disc 15. After grinding in the upper and lower grinding discs for a period of time, the control box 13 separates the inner disc 16 and outer disc 17 of the lower grinding disc by a certain distance, causing the ground metal ball bearings to fall into the collection bucket 12, thus completing the rough grinding, semi-finish grinding, and fine grinding of the entire ball bearing.

[0036] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage grinding device for metal balls, characterized in that: The multi-stage grinding device includes a primary grinding unit, a secondary grinding unit, a loading trough (8), a paddle (9), a conveying disc (10), a conveying pipe (14), a tertiary grinding unit (11), and a collection bucket (12). The primary grinding unit includes a spiral blade (1) and a material barrel shell (2). The spiral blade (1) is disposed inside the material barrel shell (2). The material barrel shell (2) is connected to the secondary grinding unit below and transmits balls to the secondary grinding unit. The secondary grinding unit includes a motor (3), a gear (4), a spiral grinding disc pipe (6), and a loading trough (8). One end of the spiral grinding disc pipe (6) is the ball transmission position, and the other end is set in the loading trough (8). The spiral grinding disc pipe (6) is equipped with spiral grinding discs. The motor (3) drives the spiral grinding disc pipe (6) to rotate through the gear (4). The loading trough (8) is equipped with a ball outlet leading to the conveying disc (10). The paddle (9) is set inside the conveying disc (10), and the lower part of the conveying disc (10) is connected to the conveying pipe (14) and conveys the balls to the three-stage grinding unit (11). The three-stage grinding unit (11) includes an upper grinding disc (15), a lower grinding disc inner disc (16), a lower grinding disc outer disc (17), and a second motor (7), which drives the upper grinding disc (15) and the lower grinding disc to rotate. The collection bucket (12) is located below the three-stage grinding unit (11).

2. The multi-stage grinding device for metal balls according to claim 1, characterized in that: The spiral grinding disc pipe (6) is inclined, and there are 16 spiral grinding disc pipes in total. The spiral grinding disc is a diamond grinding disc.

3. The multi-stage grinding device for metal balls according to claim 1, characterized in that: The loading trough (8) and the conveying disc (10) are set on an inclined surface, and the horizontal height of the loading trough (8) is higher than the horizontal height of the conveying disc (10).

4. The multi-stage grinding device for metal balls according to claim 1, characterized in that: The second motor (7) consists of two motors, which drive the upper grinding disc (15) and the lower grinding disc respectively.

5. The multi-stage grinding device for metal balls according to claim 1, characterized in that: The first-level grinding unit, the second-level grinding unit, and the third-level grinding unit (11) are equipped with grinding media sensors (5).

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