A multi-specification miniature ball bearing time-sharing combined feeding device

Abstract

This invention relates to the field of automated precision assembly equipment technology, specifically a multi-specification miniature ball bearing time-sharing combination feeding device. It includes a base and at least one set of ball bearing storage components connected to the upper surface of the base. The ball bearing storage components include a support arm connected to the upper surface of the base, a ball bearing hopper connected to one side of the top of the support arm, and a guide cylinder extending through and connected to the bottom of the ball bearing hopper. A gradient guide groove is formed on the surface of the base, directly below the guide cylinder, for the balls. A material discharge control component is connected to the upper surface of the gradient guide groove. A straight guide groove is also formed on the surface of the base at the end of the gradient guide groove. This invention, through the material discharge control component, enables precise feeding of balls of different sizes or with different markings, thereby achieving flexible combination feeding of multi-specification balls and improving the adaptability of the device. Simultaneously, the same straight guide groove and discharge nozzle ensure that the position of the balls remains consistent during discharge, thus improving the accuracy of ball bearing assembly.

Description

Technical Field

[0001] This invention relates to the field of automated precision assembly equipment technology, and in particular to a multi-specification miniature ball bearing time-sharing combined feeding device. Background Technology

[0002] In automated or semi-automated assembly processes for micro-precision components (such as the assembly of high-precision mechanical structures like micro-bearings and precision gear assemblies), it is often necessary to simultaneously use micro-ball bearings of various specifications (such as diameters of 0.75mm, 0.8mm, etc., micron-level differences) or with different surface markings (such as material differentiation, batch codes) for precise assembly of different functional modules. This process places stringent requirements on the automated ball bearing feeding system: it must not only ensure that the conveying and positioning accuracy of a single ball bearing reaches ±0.01mm, but also achieve flexible combination of multiple specifications of ball bearings through an intelligent sorting mechanism, while ensuring that the repeatability of the outlet position in three-dimensional space is stable within the range of 0.02mm, thereby meeting the industry standards for "zero-error" assembly of micro-transmission systems in aerospace, medical device, and other fields.

[0003] The existing technology has the following pain points:

[0004] Single hopper feeding devices can only convey balls of a single specification and cannot achieve flexible combination feeding of balls of multiple specifications, resulting in poor adaptability.

[0005] Multi-hopper feeding devices often suffer from the problem of discharge position deviation, with inconsistent ball discharge trajectories in different hoppers, which can easily lead to assembly misalignment.

[0006] In view of this, the present invention provides a multi-specification micro ball bearing time-sharing combined feeding device to solve the above problems. Summary of the Invention

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multi-specification micro ball bearing time-sharing combined feeding device, comprising a base and at least one set of ball bearing storage components connected to the upper surface of the base;

[0008] The ball storage assembly includes a support arm connected to the upper surface of the base, a ball hopper connected to one side of the top of the support arm, and a guide cylinder that extends through and is connected to the bottom of the ball hopper.

[0009] The base has a gradient guide groove on its surface, which is located directly below the ball bearing in the guide cylinder. The upper surface of the gradient guide groove is connected to a material dropping control component. The base also has a straight guide groove at the end of the gradient guide groove. An air blowing pipe is inserted into the end of the straight guide groove, and a discharge nozzle is located directly below the air outlet of the air blowing pipe at the end of the straight guide groove.

[0010] The material feeding control assembly includes a linear drive unit mounted on the upper surface of the base, a material feeding control part connected to the movable end of the linear drive unit and attached to the bottom end of the guide cylinder, and limit strips connected to both sides of the material feeding control part to achieve limit guidance.

[0011] Preferably, the bottom sides of both the gradient guide groove and the straight guide groove are inclined. The preset slope of the gradient guide groove is 5°~15°, and the preset slope of the straight guide groove is 15°~30°. The bottom depth of the gradient guide groove at the junction of the gradient guide groove and the straight guide groove is greater than the bottom depth of the straight guide groove.

[0012] Preferably, the material feeding control unit includes a limiting plate inserted between two sets of limiting strips and a material feeding port opened on the surface of the limiting plate;

[0013] When the linear drive unit drives the limiting plate to move to the farthest point, the material drop port is located directly below the guide cylinder, and the inner wall size of the guide cylinder, the bottom side diameter of the material drop port, and the size of the ball are matched.

[0014] Preferably, the ball hopper is equipped with an anti-clogging component to prevent the balls from getting stuck.

[0015] The anti-clogging component includes a bearing ring installed on the inner wall of the ball hopper, a ball guide part that penetrates and connects inside the bearing ring, and a circumferential drive part installed on the inner wall of the ball hopper and driving the ball guide part to rotate.

[0016] Preferably, the ball guide section includes a ball guide core that is connected through the inner wall of the bearing ring and has an arc-shaped top, and a ball guide port opened inside the ball guide core;

[0017] The dimensions of the two branch openings at the top of the ball bearing guide port are matched with the dimensions of the ball bearings.

[0018] Preferably, the circumferential drive unit includes a gear ring connected to the outer surface of the ball guide core, a first drive motor installed on the inner wall of the ball hopper, and a first gear disc connected to the output end of the first drive motor and meshing with the gear ring.

[0019] Preferably, a single ball bearing feeding assembly extending to the inner wall of a linear guide groove is mounted on the surface of the base;

[0020] A single ball feed assembly includes a ball limiting part inserted into the top opening of a linear guide groove, a guide part connected to both sides of the ball limiting part and mounted on the upper surface of a base, and a lifting drive part mounted on the surface of the base and connected to the ball limiting part.

[0021] Preferably, the ball bearing limiting part includes a first baffle and a second baffle disposed opposite to it;

[0022] The bottom of the first baffle is close to the bottom side of the linear guide groove, and the straight distance between the second baffle and the bottom side of the linear guide groove is greater than 10% of the diameter of the ball.

[0023] Preferably, the guide portion includes a vertical plate connected to the upper surface of the base, two sets of parallel guide grooves formed on the surface of the vertical plate, and guide blocks respectively connected to the side surfaces of the first baffle and the second baffle and slidably connected to the two sets of guide grooves.

[0024] Preferably, the lifting drive unit includes a first rack connected to the surface of the first baffle near the second baffle, a second rack connected to the surface of the second baffle near the first baffle, a second drive motor mounted on the upper surface of the base, and a second gear plate connected to the output end of the second drive motor and meshing with the first rack and the second rack respectively.

[0025] The beneficial effects of this invention are:

[0026] 1. The present invention, through the material feeding control component, can achieve precise feeding of balls of different sizes or with different markings, thereby enabling flexible combination feeding of balls of multiple specifications, thus improving the adaptability of the device; at the same time, the same linear guide groove and the discharge nozzle can ensure that the position of the balls is consistent during discharge, thereby improving the accuracy of ball assembly.

[0027] 2. In this invention, the ball guide is driven to rotate by the circumferential drive unit. During the rotation of the ball guide, the balls can slide through the ball guide port to the bottom of the ball hopper and into the guide cylinder, thereby achieving continuous feeding of the balls and avoiding bridging of the balls in the ball hopper, which would cause blockage.

[0028] 3. In this invention, when the ball slides inside the linear guide groove to the side of the first baffle away from the second baffle, the single ball feeding component can realize the feeding of the ball individually. This allows the feeding speed of the ball to be controlled according to the needs of ball assembly, thereby improving the practicality of the device. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0032] Figure 3 This is a schematic diagram of the material feeding control component of the present invention;

[0033] Figure 4 This is a cross-sectional view of the docking structure between the guide cylinder and the limiting plate of the present invention;

[0034] Figure 5 This is a schematic diagram of the ball bearing storage component structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the connection structure of the anti-clogging component of the present invention;

[0036] Figure 7 This is a cross-sectional view of the connection structure of the anti-clogging component of the present invention;

[0037] Figure 8 This is a partial view of the installation structure of the single ball bearing feeding assembly of the present invention;

[0038] Figure 9 This is a schematic diagram of the single ball bearing feeding assembly of the present invention;

[0039] Figure 10 This is an exploded view of the connection structure of the single ball bearing feeding assembly of the present invention.

[0040] In the diagram: 1. Base; 2. Ball storage assembly; 21. Support arm; 22. Ball hopper; 23. Guide cylinder; 3. Gradient guide groove; 4. Linear guide groove; 5. Air blowing pipe; 6. Discharge nozzle; 7. Discharge control assembly; 71. Linear drive unit; 72. Discharge control section; 721. Limit plate; 722. Discharge port; 73. Limiting strip; 8. Anti-blocking assembly; 81. Bearing ring; 82. Ball guide section; 821. Ball guide core; 822. Ball. 83. Feed inlet; 84. Circumferential drive unit; 85. Gear ring; 86. First drive motor; 87. First gear plate; 98. Single ball feed assembly; 99. Ball limiting unit; 90. First baffle; 91. Second baffle; 92. Guide unit; 92. Vertical plate; 92. Guide groove; 92. Guide block; 93. Lifting drive unit; 94. First rack; 95. Second rack; 96. Second drive motor; 97. Second gear plate. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1

[0043] This invention relates to a multi-specification miniature ball bearing time-sharing combined feeding device, such as... Figure 1 - Figure 4 As shown, it includes a base 1 and at least one set of ball storage components 2 connected to the upper surface of the base 1;

[0044] The ball storage assembly 2 includes a support arm 21 connected to the upper surface of the base 1, a ball hopper 22 connected to one side of the top end of the support arm 21, and a guide cylinder 23 that passes through and is connected to the bottom end of the ball hopper 22.

[0045] The base 1 has a gradient guide groove 3 located directly below the ball bearing in the guide cylinder 23. The upper surface of the gradient guide groove 3 is connected to the material drop control component 7. The base 1 also has a straight guide groove 4 located at the end of the gradient guide groove 3. An air blowing pipe 5 is inserted into the end of the straight guide groove 4. The end of the straight guide groove 4 has a discharge nozzle 6 located directly below the air outlet of the air blowing pipe 5. In this embodiment, the dimensions of the gradient guide groove 3 and the straight guide groove 4 must be precisely matched with the ball bearing specifications. The groove width should be slightly larger than the ball bearing diameter by 0.02~0.05mm on one side to avoid jamming or tipping. Impurities in the gradient guide groove 3 and the straight guide groove 4 should be cleaned regularly to prevent impurities from clogging the channels and affecting the feeding stability.

[0046] The pressure of the air hose 5 needs to be adjusted according to the ball specifications. If the pressure is too low, the ball may not be pushed in place. If the pressure is too high, the ball may splash.

[0047] Regularly clean the impurities in the gradient guide groove 3 and the straight guide groove 4 to prevent impurities from clogging the channels and affecting the feeding stability;

[0048] The diameter difference between different specifications of balls should not be too large, and it is recommended to control it within ±0.1mm to prevent the balls from getting stuck or misaligned in the gradient guide groove 3 and the linear guide groove 4.

[0049] It should be noted that the air blowing pipe 5 is connected to an external air source, and the air outlet is set towards the discharge nozzle 6. Compressed air of 0.2~0.5MPa can be introduced. After the ball is conveyed to the discharge nozzle 6 through the linear guide groove 4, compressed air is introduced through the air blowing pipe 5 to accurately blow the ball to the target assembly station.

[0050] The material feeding control assembly 7 includes a linear drive unit 71 mounted on the upper surface of the base 1, a material feeding control part 72 connected to the movable end of the linear drive unit 71 and attached to the bottom end of the guide cylinder 23, and a limit strip 73 connected to both sides of the material feeding control part 72 to achieve limit guidance.

[0051] It should be noted that the linear drive unit 71 can be either an electric actuator or a cylinder.

[0052] like Figure 3As shown, both the gradient guide groove 3 and the straight guide groove 4 are inclined at their bottom sides. The gradient guide groove 3 has a preset slope of 5°~15°, and the straight guide groove 4 has a preset slope of 15°~30°. At the junction of the gradient guide groove 3 and the straight guide groove 4, the bottom depth of the gradient guide groove 3 is greater than the bottom depth of the straight guide groove 4. In this embodiment, the inclined bottom of the gradient guide groove 3 allows the ball to slide into the interior of the straight guide groove 4, and then the inclined bottom of the straight guide groove 4 allows it to reach directly below the outlet end of the ball-blowing pipe 5.

[0053] like Figure 3 As shown, the material feeding control unit 72 includes a limiting plate 721 inserted between two sets of limiting strips 73, and a material feeding port 722 opened on the surface of the limiting plate 721. In this embodiment, when the limiting plate 721 is subjected to a force, it can slide on the inner wall of the limiting strip 73, thereby restricting the movement direction of the limiting plate 721.

[0054] like Figure 4 As shown, when the linear drive unit 71 drives the limiting plate 721 to move to the farthest point, the discharge port 722 is located directly below the guide cylinder 23, and the inner wall size of the guide cylinder 23, the bottom side diameter of the discharge port 722 and the size of the ball are matched.

[0055] In use, taking three sets of ball storage components 2 as an example, first connect the air blowing pipe 5 to the external air source, then control the diameter difference of different sized balls within ±0.1mm or store balls with different markings in the three different sets of ball storage components 2. Then, according to the installation requirements, preset the control program in the PLC control system to achieve precise control of the linear drive unit 71 corresponding to different ball storage components 2. When the linear drive unit 71 extends, it can push the limit plate 721 to move laterally. When the limit plate 721 moves to the farthest end of the stroke, the drop port 722 moves to the bottom of the guide cylinder 23. At this time, the ball can fall into the gradient guide groove 3 through the drop port 722. Then the ball can roll through the gradient guide groove 3 to the inside of the linear guide groove 4 and slide towards the outlet end of the air blowing pipe 5. When the ball is directly below the outlet end of the air blowing pipe 5, compressed air is introduced into the air blowing pipe 5 to blow the ball through the discharge nozzle 6 to the target assembly station, completing a single feeding.

[0056] Next, when the linear drive unit 71 retracts, it drives the limit plate 721 to reset. After the limit plate 721 is reset, it can close the bottom of the guide cylinder 23.

[0057] Example 2

[0058] like Figure 5 - Figure 7 Embodiment 2 of the present invention is shown, which differs from Embodiment 1 above only in that: an anti-clogging component 8 for preventing ball blockage is installed inside the ball hopper 22;

[0059] The anti-clogging component 8 includes a bearing ring 81 installed on the inner wall of the ball hopper 22, a ball guide part 82 that passes through and is connected inside the bearing ring 81, and a circumferential drive part 83 installed on the inner wall of the ball hopper 22 and driving the ball guide part 82 to rotate.

[0060] like Figure 6 As shown, the ball guide section 82 includes a ball guide core 821 that is connected through the inner wall of the bearing ring 81 and has an arc-shaped top, and a ball guide port 822 that is opened inside the ball guide core 821; in this embodiment, the ball can slide to the bottom side of the ball guide core 821 through the ball guide port 822.

[0061] The dimensions of the two branch openings at the top of the ball guide port 822 are matched with the dimensions of the balls.

[0062] like Figure 7 As shown, the circumferential drive unit 83 includes a gear ring 831 connected to the outer surface of the ball guide core 821, a first drive motor 832 mounted on the inner wall of the ball hopper 22, and a first gear disc 833 connected to the output end of the first drive motor 832 and meshing with the gear ring 831. In this embodiment, when the first drive motor 832 is running, it can drive the first gear disc 833 to rotate. When the first gear disc 833 rotates, it can drive the ball guide core 821 to rotate inside the bearing ring 81 through the gear ring 831.

[0063] In use, the first drive motor 832 can drive the first gear plate 833 to rotate. When the first gear plate 833 rotates, it can drive the ball guide core 821 to rotate inside the bearing ring 81 through the gear ring 831. During the rotation of the ball guide core 821, the balls can slide through the ball guide port 822 to the bottom of the ball hopper 22 and slide into the guide cylinder 23. In this way, the rotation of the ball guide core 821 avoids the ball bridging inside the ball hopper 22, which would cause blockage.

[0064] Example 3

[0065] like Figure 8 - Figure 10 Embodiment 3 of the present invention is shown, which differs from Embodiment 2 above only in that: a single ball bearing feeding assembly 9 extending to the inner wall of the linear guide groove 4 is installed on the surface of the base 1;

[0066] The single ball feed assembly 9 includes a ball limiting part 91 inserted into the top opening of the linear guide groove 4, a guide part 92 connected to both sides of the ball limiting part 91 and mounted on the upper surface of the base 1, and a lifting drive part 93 mounted on the surface of the base 1 and connected to the ball limiting part 91.

[0067] The ball bearing limiting part 91 includes a first baffle 911 and a second baffle 912 disposed opposite to it;

[0068] The bottom of the first baffle 911 is close to the bottom side of the linear guide groove 4, and the straight distance between the second baffle 912 and the bottom side of the linear guide groove 4 is higher than 10% of the diameter of the ball.

[0069] It should be noted that the distance between the bottom ends of the first baffle 911 and the second baffle 912 is matched with the diameter of the ball bearing.

[0070] The guide portion 92 includes a vertical plate 921 connected to the upper surface of the base 1, two sets of parallel guide grooves 922 formed on the surface of the vertical plate 921, and guide blocks 923 respectively connected to the side surfaces of the first baffle 911 and the second baffle 912 and slidably connected to the two sets of guide grooves 922. In this embodiment, when the first baffle 911 or the second baffle 912 is subjected to a force, it drives the guide blocks 923 to slide inside the guide grooves 922, thereby restricting the movement direction of the first baffle 911 or the second baffle 912.

[0071] The lifting drive unit 93 includes a first rack 931 connected to the surface of the first baffle 911 near the second baffle 912, a second rack 932 connected to the surface of the second baffle 912 near the first baffle 911, a second drive motor 933 mounted on the upper surface of the base 1, and a second gear disk 934 connected to the output end of the second drive motor 933 and meshing with the first rack 931 and the second rack 932 respectively. In this embodiment, when the second drive motor 933 drives the second gear disk 934 to rotate clockwise, the second gear disk 934 can drive the second rack 932 to move downward through the meshing structure and drive the second baffle 912 to move downward. At the same time, the second gear disk 934 can drive the first rack 931 to move upward through the meshing structure and drive the first baffle 911 to move upward, thereby driving the first baffle 911 and the second baffle 912 to move up and down in opposite directions. Conversely, when the second drive motor 933 drives the second gear disk 934 to rotate counterclockwise, it can simultaneously drive the first baffle 911 to move downward and drive the second baffle 912 to move upward.

[0072] In use, when the ball slides inside the linear guide groove 4 to the side of the first baffle 911 away from the second baffle 912, the second drive motor 933 drives the second gear 934 to rotate clockwise. This controls the first baffle 911 to move upward and drives the second baffle 912 to move downward. At this time, the ball can slide to the surface of the second baffle 912 near the first baffle 911. Then, when the second drive motor 933 drives the second gear 934 to rotate counterclockwise, the first baffle 911 moves downward and drives the second baffle 912 to move upward. This can block the second ball with the first baffle 911 and make the first ball slide to the bottom side of the air pipe 5.

[0073] This cycle is repeated, allowing for continuous feeding of individual ball bearings.

[0074] The complete workflow of this invention is as follows:

[0075] First, connect the air pipe 5 to an external air source. Then, store balls of different sizes or with different markings in different ball storage components 2. Next, drive the ball guide part 82 to rotate through the circumferential drive part 83, so that the balls can be continuously conveyed to the inside of the guide cylinder 23.

[0076] Next, when the linear drive unit 71 extends, it pushes the limiting plate 721 to move laterally. When the limiting plate 721 drives the dropping port 722 to move directly below the guide cylinder 23, the ball falls into the gradient guide groove 3 through the dropping port 722 and rolls into the interior of the linear guide groove 4.

[0077] Then, when the ball slides inside the linear guide groove 4 to the side of the first baffle 911 away from the second baffle 912, the single ball feeding component 9 can realize the single ball feeding. When the ball slides to the outlet end of the air blowing pipe 5, compressed air is introduced into the air blowing pipe 5 to blow the ball through the discharge nozzle 6 to the target assembly station, thus completing a single feeding.

[0078] Next, according to the needs of ball bearing installation, continuous feeding of balls of different sizes or with different markings is realized, thereby achieving time-sharing combination feeding of balls.

[0079] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-specification miniature ball bearing time-sharing combined feeding device, characterized in that: Includes a base (1) and at least one set of ball storage components (2) connected to the upper surface of the base (1); The ball storage assembly (2) includes a support arm (21) connected to the upper surface of the base (1), a ball hopper (22) connected to one side of the top of the support arm (21), and a guide cylinder (23) that passes through and is connected to the bottom of the ball hopper (22). The base (1) has a gradient guide groove (3) located directly below the ball bearing in the guide cylinder (23) on its surface. The upper surface of the gradient guide groove (3) is connected to a material dropping control component (7). The base (1) also has a straight guide groove (4) located at the end of the gradient guide groove (3). An air blowing pipe (5) is inserted into the end of the straight guide groove (4). A discharge nozzle (6) located directly below the air outlet of the air blowing pipe (5) is opened at the end of the straight guide groove (4). The material dropping control assembly (7) includes a linear drive unit (71) mounted on the upper surface of the base (1), a material dropping control part (72) connected to the movable end of the linear drive unit (71) and attached to the bottom end of the guide cylinder (23), and a limit strip (73) connected to both sides of the material dropping control part (72) to achieve limit guidance.

2. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 1, characterized in that: The bottom sides of the gradient guide groove (3) and the straight guide groove (4) are both inclined. The gradient guide groove (3) has a preset slope of 5°~15° and the straight guide groove (4) has a preset slope of 15°~30°. The bottom depth of the gradient guide groove (3) at the junction of the gradient guide groove (3) and the straight guide groove (4) is greater than the bottom depth of the straight guide groove (4).

3. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 1, characterized in that: The material feeding control unit (72) includes a limiting plate (721) inserted between two sets of limiting strips (73) and a material feeding port (722) opened on the surface of the limiting plate (721). The linear drive unit (71) drives the limiting plate (721) to move to the point where the material drop port (722) is located directly below the guide cylinder (23) when the farthest end is formed, and the inner wall size of the guide cylinder (23), the bottom side hole diameter of the material drop port (722) and the size of the ball are matched.

4. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 1, characterized in that: The ball hopper (22) is equipped with an anti-clogging component (8) to prevent the balls from clogging. The anti-clogging component (8) includes a bearing ring (81) installed on the inner wall of the ball hopper (22), a ball guide part (82) that passes through and is connected inside the bearing ring (81), and a circumferential drive part (83) installed on the inner wall of the ball hopper (22) and driving the ball guide part (82) to rotate.

5. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 4, characterized in that: The ball guide section (82) includes a ball guide core (821) that is connected through the inner wall of the bearing ring (81) and has an arc-shaped top, and a ball guide port (822) opened inside the ball guide core (821). The dimensions of the two branch openings at the top of the ball guide port (822) match the dimensions of the balls.

6. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 5, characterized in that: The circumferential drive unit (83) includes a gear ring (831) connected to the outer surface of the ball guide core (821), a first drive motor (832) installed on the inner wall of the ball hopper (22), and a first gear disc (833) connected to the output end of the first drive motor (832) and meshing with the gear ring (831).

7. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 1, characterized in that: The surface of the base (1) is fitted with a single ball feed assembly (9) that extends to the inner wall of the linear guide groove (4). The single ball feed assembly (9) includes a ball limiting part (91) inserted into the top opening of the linear guide groove (4), a guide part (92) connected to both sides of the ball limiting part (91) and installed on the upper surface of the base (1), and a lifting drive part (93) installed on the surface of the base (1) and connected to the ball limiting part (91).

8. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 7, characterized in that: The ball bearing limiting part (91) includes a first baffle (911) and a second baffle (912) disposed opposite to it. The bottom of the first baffle (911) is close to the bottom side of the linear guide groove (4), and the straight distance between the second baffle (912) and the bottom side of the linear guide groove (4) is higher than 10% of the diameter of the ball.

9. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 8, characterized in that: The guide part (92) includes a vertical plate (921) connected to the upper surface of the base (1), two sets of parallel guide grooves (922) opened on the surface of the vertical plate (921), and guide blocks (923) respectively connected to the side surfaces of the first baffle (911) and the second baffle (912) and slidably connected to the two sets of guide grooves (922).

10. The multi-specification micro ball bearing time-sharing combined feeding device as described in claim 9, characterized in that: The lifting drive unit (93) includes a first rack (931) connected to the surface of the first baffle (911) near the second baffle (912), a second rack (932) connected to the surface of the second baffle (912) near the first baffle (911), a second drive motor (933) mounted on the upper surface of the base (1), and a second gear disc (934) connected to the output end of the second drive motor (933) and meshing with the first rack (931) and the second rack (932) respectively.

Images