Ball filling work machine arm for silent block nut bearing seat assembly and application thereof

Abstract

The present application relates to the technical field of bearing production, in particular to a ball filling operation machine arm for assembling a mute nut bearing seat and its application, comprising a workbench, the workbench is provided with a filling assembly, the filling assembly comprises a storage barrel, a discharge pipe and a plurality of side plates, the inner side wall of the side plate is hinged with a baffle, the discharge pipe is provided with a telescopic structure outside; the periphery of the bottom of the side plate is provided with an adjusting structure, the adjusting structure comprises an inner ring and an outer ring rotatably connected outside the inner ring, and the outer ring and the side plate are drivingly connected through a plurality of transmission mechanisms. The present application triggers automatic discharge of the ball through the telescopic structure, adapts to different specifications of the ball size through the adjusting structure, realizes automatic and accurate filling of the bearing ball, and solves the problems of low efficiency of manual filling and poor adaptability of the existing filling device in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of bearing manufacturing technology, specifically a ball filling robot arm for assembling silent nut bearing housings and its application. Background Technology

[0002] Silent nut bearing housings are support structures used to support rotating nuts, commonly found in ball screw supports. Through multi-dimensional noise reduction optimization in structural design, manufacturing processes, and assembly precision, they reduce friction, vibration, and impact noise during high-speed nut operation. The bearing component is typically a deep groove ball bearing, requiring the filling of the space between the inner and outer rings with balls during assembly.

[0003] For example, patent application CN122216254A, in the field of large mechanical basic components, discloses a ball filling device and filling method for assembling a double-volley ball slewing bearing. The device includes a conveying structure with a first robotic arm and a second robotic arm respectively mounted on both sides for mounting the inner and lower outer rings on the conveying structure. A bracket is mounted above the conveying structure, with a first adjusting mechanism for adjusting the rotation of the lower and upper outer rings, and a second adjusting mechanism for adjusting the installation of the steel balls inside the inner ring. The first adjusting mechanism includes a vertically mounted lifting cylinder, a lifting rod fixed to the free end of the bottom of the lifting cylinder, a drive gear horizontally rotatable on the lifting rod via a vertical shaft, and a drive motor driven by the vertical shaft.

[0004] In existing small and medium-sized enterprises, ball bearing filling is mostly done manually, which is inefficient. Although the patent mentioned above can automatically fill the balls, it has low adaptability and is difficult to fill balls of different sizes. Summary of the Invention

[0005] The purpose of this invention is to provide a ball bearing filling robot arm for assembling silent nut bearing seats and its application. The robot arm triggers automatic ball discharge through a telescopic structure and adapts to different ball sizes by adjusting the structure, thereby achieving automated and precise filling of bearing balls and solving the problems of low efficiency of manual filling and poor adaptability of existing filling devices in the prior art.

[0006] To achieve the above objectives, the present invention provides a ball filling robot arm for assembling silent nut bearing housings, comprising a worktable, wherein the worktable is provided with a filling assembly for filling balls between the inner and outer rings of the bearing, the filling assembly comprising a storage bin for storing balls, a discharge pipe, and several side plates slidably connected to the outlet of the discharge pipe, wherein an outwardly extending baffle is hinged to the inner side wall of the side plate near the bottom for controlling the falling of the balls, and a telescopic structure is provided outside the discharge pipe for controlling the up and down extension and retraction of the side plates; when filling balls, when the telescopic structure abuts against the bearing, the side plates and the discharge pipe slide relative to each other, causing the balls to press against the baffle, thereby squeezing the balls into the gap between the inner and outer rings of the bearing;

[0007] The bottom periphery of the side plate is provided with an adjustment structure for controlling the radial position of the side plate to correspond with the size of the ball. The adjustment structure includes an inner ring fixed to the bottom end of the telescopic structure and an outer ring rotatably connected to the outside of the inner ring. The outer ring and the side plate are connected by several transmission mechanisms. Before filling the ball, rotating the outer ring drives several side plates to move radially synchronously through the transmission mechanism to adjust the diameter of the released ball.

[0008] In this design, considering that existing silent nut bearing housings often rely on manual ball filling for bearing assembly, resulting in low filling efficiency and difficulty in ensuring uniform ball distribution, which can negatively impact the quiet operation of the bearing; and that existing automatic filling devices are mostly adapted to single-size balls, making it difficult to flexibly adapt to bearings and balls of different sizes, thus limiting equipment versatility. Therefore, this invention utilizes a telescopic structure to trigger automatic ball discharge using the resistance force during equipment feeding, eliminating the need for additional power to drive the discharge, resulting in a simplified and reliable structure; and by incorporating an adjustment structure, the size of the discharge channel enclosed by the side plates can be adjusted synchronously to accommodate different ball sizes, improving equipment versatility while ensuring accurate ball discharge.

[0009] In the technical solution of the present invention, the bottom end of the storage tank and the top end of the discharge pipe are connected by a feeding pipe. The inner side wall of the side plate is provided with a groove near the bottom end. A shaft is fixed at the top of the groove. A torsion spring is provided between the top end of the baffle and the shaft. The two ends of the torsion spring are fixed to the shaft wall and the baffle, respectively.

[0010] In this setup, the feeding pipe ensures a continuous supply of balls from the storage tank to the discharge pipe, guaranteeing the continuity of the filling operation. A torsion spring provides a restoring force to the baffle, normally closing the discharge channel and opening the discharge only when the balls are compressed, achieving precise start and stop of discharge and preventing accidental spillage of the balls.

[0011] In the technical solution of the present invention, the telescopic structure includes several vertical plates and a fixing block slidably connected to the corresponding vertical plates. The inner end of the fixing block is fixed to the outer wall of the discharge pipe. A sliding groove is provided in the middle of the vertical plate. The middle part of the fixing block is embedded in the corresponding sliding groove and the two are slidably connected. A sliding rod is fixed between the upper and lower groove surfaces of the sliding groove. The sliding rod passes through the corresponding fixing block and the two are slidably connected. A spring is sleeved on the outer wall of the sliding rod below the fixing block.

[0012] In this setup, the relative sliding of the discharge pipe and the side plate is achieved through the sliding cooperation of the vertical plate, the fixed block and the slide rod; the spring provides the reset force, and when the equipment is pressed down, the vertical plate is resisted and moves upward, which drives the side plate to move upward so that the ball presses the baffle to discharge the material. After being lifted, it automatically resets and stops discharging. There is no need to set up an additional discharge drive mechanism. The discharge can be started and stopped automatically by relying on the feeding action of the equipment. The structure is simple and the action is highly synchronized.

[0013] In the technical solution of the present invention, the top surface of the inner ring is fixed to the bottom end of the plurality of vertical plates, the outer ring wall of the inner ring is fixed with a plurality of support rods, the inner ring wall of the outer ring is provided with support grooves corresponding to the plurality of support rods, the inner wall of the support groove and the outer end of the support rod are provided with magnetic buckles that attract each other, and the outer end of the support rod is embedded in the corresponding support groove and the two are slidably connected.

[0014] In this setup, the outer ring and inner ring are rotatably connected through the cooperation of the support rod and the support groove, providing support and guidance for the adjustment and rotation of the outer ring; the magnetic buckle provides positioning suction, and the outer ring position is automatically fixed after adjustment, preventing the outer ring from rotating on its own during the filling operation and causing the material discharge channel size to shift, thus ensuring the dimensional stability of the filling process.

[0015] In the technical solution of the present invention, the transmission mechanism includes a rotating cylinder and a threaded rod. The inner end of the threaded rod is fixed to the bottom end of the outer wall of the corresponding side plate. The rotating cylinder radially penetrates the inner ring and the two are rotatably connected. The outer end of the rotating cylinder is coaxially fixed with a driven tooth.

[0016] In this setup, the rotation of the outer ring is converted into the radial translation of the side plate through the threaded transmission of the rotating cylinder and the threaded rod. The transmission accuracy is high, and the inner diameter of the discharge channel can be precisely controlled to accommodate ball bearings of different diameters.

[0017] In the technical solution of the present invention, a transmission groove is provided at the position corresponding to the position of the rotating cylinder on the inner wall of the outer ring, and a tooth is fixed on the top surface of the transmission groove, and the tooth meshes with the corresponding driven tooth.

[0018] In this configuration, the meshing transmission between the teeth and driven teeth allows the outer ring to be rotated synchronously, driving all rotating cylinders to rotate in sync. This, in turn, causes all side plates to move radially in sync, ensuring the coaxiality of the discharge channel after adjustment and preventing unilateral offset and ball jamming.

[0019] In the technical solution of the present invention, the outer wall of the side plate is symmetrically fixed with limit rods on both sides of the threaded rod near the bottom end, and a plurality of limit sleeves corresponding to the limit rods are fixed on the inner ring wall of the inner ring. The outer end of the limit rod is slidably connected to the corresponding limit sleeve.

[0020] In this setting, the sliding engagement between the limiting rod and the limiting sleeve restricts the rotational freedom of the side plate, ensuring that the side plate moves smoothly only in the radial direction, preventing the side plate from rotating synchronously with the threaded rod, and improving the stability and reliability of the adjustment process.

[0021] In the technical solution of the present invention, the minimum torque of the torsion spring is greater than the maximum torque given to the baffle by a number of balls, the magnetic attraction force of the magnetic buckle is greater than the horizontal thrust on the side plate when the balls are extruded, so as to prevent the side plate from expanding outward when the balls are extruded, and the distance between the outer wall of the side plate and the inner wall of the discharge pipe is greater than the minimum radius of the balls.

[0022] In this setting, by limiting the torque of the torsion spring, the ball bearings are prevented from falling off the baffle on their own under normal conditions, thus improving the reliability of the discharge control; by limiting the magnetic attraction force, the reaction force of the ball bearings is prevented from pushing the side plate outward during the filling process, thus ensuring the stability of the discharge channel size; and by limiting the distance between the side plate and the discharge pipe, the ball bearings are prevented from getting stuck during the adjustment process, thus ensuring smooth discharge.

[0023] In the technical solution of the present invention, the workbench is provided with a rotating frame, a plurality of chucks are fixed on the rotating frame, the outer ring of the bearing is fixed on the corresponding chuck, the inner ring of the bearing is placed in contact with the outer ring, and the workbench is provided with a robotic arm for controlling the multi-axis movement of the filling assembly.

[0024] In this setup, the rotating frame drives the bearing to rotate, and the filling component discharges material at a fixed point, so that the balls are evenly filled into the bearing raceway, ensuring uniform ball distribution and improving the smoothness and quietness of the bearing operation. The robotic arm drives the filling component to move in multiple axes, which can flexibly align with the filling gaps of bearings of different specifications, improving the adaptability of the equipment.

[0025] On the other hand, the present invention also provides an application of a ball filling robot arm for assembling silent nut bearing housings, which is the application of the aforementioned ball filling robot arm for assembling silent nut bearing housings in the assembly of silent nut bearing housings.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, a telescopic structure combined with a baffle torsion spring is used for the discharge design. The ball discharge is automatically triggered by the downward pressing action of the equipment, and the discharge stops automatically after lifting. No additional discharge drive power source is required. The structure is simple and reliable. The discharge start and stop are highly synchronized with the filling and feeding action, which can accurately control the timing of ball discharge, avoid overfilling and underfilling, and effectively improve the accuracy and efficiency of ball filling. The overall structure is simple and suitable for the production needs of small and medium-sized bearing assembly enterprises. The equipment investment cost is low and it is applicable to a wide range of scenarios.

[0028] 2. In this invention, the adjustment structure that drives multiple sets of threaded rods to adjust synchronously through the outer ring tooth transmission can quickly adjust the inner diameter of the discharge channel formed by the side plate enclosure, flexibly adapt to ball bearings and bearings of different diameters, and the equipment has strong versatility; with the magnetic buckle positioning and limit rod guiding structure, the size is stable and reliable after adjustment, and no deviation will occur during the filling process, ensuring smooth discharge and filling accuracy. Attached Figure Description

[0029] Figure 1 This is a simplified schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the filling component of the present invention;

[0031] Figure 3 This is a schematic diagram of the feeding pipe, the discharging pipe, and the adjusting structure in this invention;

[0032] Figure 4 This is a cross-sectional view of the feeding pipe and the discharging pipe in this invention;

[0033] Figure 5 This is a cross-sectional view of the side plate in this invention;

[0034] Figure 6 This is a schematic diagram of the telescopic structure in this invention;

[0035] Figure 7 This is an exploded view of the telescopic structure and the adjusting structure in this invention;

[0036] Figure 8 This is a cross-sectional view of the inner and outer rings in this invention;

[0037] Figure 9 This is a cross-sectional view of the outer ring in this invention;

[0038] Figure 10 This is an exploded view of the threaded rod and rotating cylinder in this invention;

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Workbench;

[0041] 200. Rotary frame; 201. Chuck;

[0042] 300. Bearings;

[0043] 400. Filling assembly; 401. Storage hopper; 402. Feeding pipe; 403. Discharge pipe; 404. Side plate; 405. Baffle; 4051. Torsion spring; 410. Telescopic structure; 411. Vertical plate; 412. Fixing block; 413. Slide rod; 414. Spring; 420. Adjustment structure; 421. Inner ring; 4211. Support rod; 422. Outer ring; 4221. Transmission groove; 4222. Support groove; 4223. Gear; 423. Rotating cylinder; 4231. Driven gear; 424. Threaded rod; 425. Limiting rod; 426. Limiting sleeve. Detailed Implementation

[0044] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0045] Unless otherwise expressly stated, throughout this specification, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0046] Reference Figures 1-10 As shown, this embodiment provides a technical solution:

[0047] A ball filling robot arm for assembling silent nut bearing housings is applied in the assembly process of silent nut bearing housings. It includes a worktable 100, a rotating frame 200 on the worktable 100, and several chucks 201 fixed on the rotating frame 200. The outer ring of the bearing 300 is fixed on the corresponding chuck 201, and the inner ring of the bearing 300 is offset and abutted against the outer ring to form a crescent-shaped raceway gap for ball filling. The worktable 100 is equipped with a robot arm that controls the multi-axis movement of the filling component 400. The robot arm drives the filling component 400 to align with the raceway gap of the bearing 300 to complete the automated ball filling operation. The rotating frame 200 and the robot arm are existing technologies and will not be described in detail here.

[0048] Please see Figures 1-5 As shown, the filling assembly 400 includes a storage tank 401 for storing balls, a feeding pipe 402, a discharge pipe 403, and several side plates 404 slidably connected to the outlet of the discharge pipe 403. The bottom end of the storage tank 401 and the top end of the discharge pipe 403 are connected through the feeding pipe 402, and the balls in the storage tank 401 can be continuously fed into the discharge pipe 403 for temporary storage via the feeding pipe 402.

[0049] Furthermore, the inner wall of the side plate 404 is provided with a groove near the bottom end, and a shaft is fixed at the top of the groove. An outwardly extending baffle 405 is hinged to the inner wall of the side plate 404 near the bottom to control the falling of the ball. A torsion spring 4051 is provided between the top of the baffle 405 and the shaft, and the two ends of the torsion spring 4051 are fixed to the shaft wall and the baffle 405 respectively.

[0050] Under normal conditions, the torsion spring 4051 drives the baffle 405 to extend inward, closing the discharge channel and preventing the balls inside the discharge pipe 403 from falling freely. When the balls are subjected to downward pressure, the baffle 405 can be pushed to rotate downward around the shaft and retract, causing the balls to be squeezed out from the bottom. The minimum torque of the torsion spring 4051 is greater than the maximum torque exerted on the baffle 405 by several balls, ensuring that the balls cannot push open the baffle 405 and fall off on their own without additional pressure, thus achieving precise start and stop control of the discharge.

[0051] Please see Figures 6-7 As shown, the storage hopper 401 is provided with a telescopic structure 410 for controlling the up and down sliding of the side plate 404. When filling the ball bearings, when the telescopic structure 410 abuts against the bearing 300, the side plate 404 and the discharge pipe 403 slide relative to each other, causing the ball bearings to squeeze the baffle 405, and then squeeze the ball bearings into the bearing 300.

[0052] Specifically, the telescopic structure 410 includes several vertical plates 411 and fixed blocks 412 that are slidably connected to the corresponding vertical plates 411. The inner end of the fixed block 412 is fixed to the outer wall of the discharge pipe 403. The vertical plates 411 are provided with a sliding groove in the middle. The fixed blocks 412 are embedded in the corresponding sliding groove and the two are slidably connected. A sliding rod 413 is fixed between the upper and lower groove surfaces of the sliding groove. The sliding rod 413 passes through the corresponding fixed block 412 and the two are slidably connected. A spring 414 is sleeved on the outer wall of the sliding rod 413 below the fixed block 412.

[0053] Under normal conditions, the spring 414 supports the fixed block 412 upwards, keeping the vertical plate 411 and the discharge pipe 403 relatively stationary. When the bottom of the vertical plate 411 is subjected to an upward resisting force, the vertical plate 411 slides upwards relative to the discharge pipe 403 along the slide rod 413, while compressing the spring 414 to store elastic force.

[0054] Please see Figures 7-10 As shown, the bottom periphery of the side plate 404 is provided with an adjustment structure 420, which is used to control the radial position of the side plate 404 to correspond with the ball size. Before filling the ball, the outer ring 422 is rotated to drive several side plates 404 to move radially synchronously through the transmission mechanism to adapt to different ball sizes.

[0055] Specifically, the adjustment structure 420 includes an inner ring 421 fixed to the bottom of the telescopic structure 410 and an outer ring 422 rotatably connected to the outside of the inner ring 421. The top surface of the inner ring 421 is fixed to the bottom of several vertical plates 411 and rises and falls synchronously with the vertical plates 411.

[0056] Furthermore, the outer ring wall of the inner ring 421 is fixed with several support rods 4211, and the inner ring wall of the outer ring 422 is provided with support grooves 4222 corresponding to the several support rods 4211. The outer end of the support rod 4211 is embedded in the corresponding support groove 4222 and the two are slidably connected. The inner wall of the support groove 4222 and the outer end of the support rod 4211 are provided with magnetic clasps that attract each other. The magnetic attraction force of the magnetic clasps is greater than the horizontal thrust of the side plate 404 when the ball is extruded, so as to avoid the side plate 404 being expanded outward by the reaction force when the ball is extruded, and to ensure the dimensional stability of the discharge channel after adjustment.

[0057] Specifically, the outer ring 422 and the side plate 404 are connected by several transmission mechanisms. The transmission mechanisms include a rotating cylinder 423 and a threaded rod 424. The inner end of the threaded rod 424 is fixed to the bottom end of the outer wall of the corresponding side plate 404.

[0058] Furthermore, the rotating cylinder 423 radially penetrates the inner ring 421 and the two are rotatably connected. The middle section of the rotating cylinder 423 has a protruding flange to prevent axial movement of the rotating cylinder 423. A driven tooth 4231 is coaxially fixed at the outer end of the rotating cylinder 423. A transmission groove 4221 is provided on the inner ring wall of the outer ring 422 at a position corresponding to the rotating cylinder 423. A tooth 4223 is fixed on the top surface of the transmission groove 4221, and the tooth 4223 meshes with the corresponding driven tooth 4231. The driven tooth 4231 is a conical tooth.

[0059] It should be noted that an indicator block is fixed at the position corresponding to the transmission groove 4221 on the upper surface of the outer ring 422, and a scale is provided at the position corresponding to the indicator block on the upper surface of the inner ring 421. The scale indicates the diameter of the cylindrical space formed by the side plate 404 represented by the corresponding position of the inner ring 421 for easy adjustment. At the same time, several magnetic buckles on the inner wall of the support groove 4222 correspond one-to-one with the scale value. The size of the magnetic buckle on the support rod 4211 is smaller than that of the magnetic buckle on the inner wall of the support groove 4222 to avoid mutual interference during rotation.

[0060] When the outer ring 422 is rotated, the tooth 4223 drives the driven tooth 4231 to rotate, which in turn drives the rotating cylinder 423 to rotate synchronously, causing the threaded rod 424 to extend and retract radially, and driving the side plate 404 to move radially synchronously.

[0061] Furthermore, limit rods 425 are symmetrically fixed on the outer wall of the side plate 404 near the bottom end, on both sides of the threaded rod 424. Several limit sleeves 426 corresponding to the limit rods 425 are fixed on the inner ring wall of the inner ring 421. The outer end of the limit rod 425 is slidably connected in the corresponding limit sleeve 426. Through the sliding cooperation between the limit rod 425 and the limit sleeve 426, the rotational freedom of the side plate 404 is restricted, ensuring that the side plate 404 moves smoothly only in the radial direction.

[0062] It should be noted that the distance between the outer wall of the side plate 404 and the inner wall of the discharge pipe 403 is greater than the minimum radius of the ball bearings, so as to avoid the ball bearings getting stuck on the inner wall of the discharge pipe 403 during the movement of the side plate 404 and ensure smooth discharge.

[0063] The working principle of the ball filling robot arm for assembling silent nut bearing housing in this invention is as follows: the outer ring of bearing 300 is fixed on chuck 201, and the inner ring and outer ring of bearing 300 are offset and placed to form a crescent-shaped ball filling gap between them. Then, the rotating frame 200 is started to drive bearing 300 to rotate, and at the same time, the robot arm is started to drive the bottom outlet of discharge pipe 403 to align with the crescent-shaped gap between the inner and outer rings of bearing 300.

[0064] After the discharge pipe 403 is aligned with the gap, the outer ring 422 is rotated and driven by the teeth 4223 and the driven teeth 4231 to rotate the rotating cylinder 423, which in turn drives the threaded rod 424 to move radially, causing the side plate 404 to move radially to adjust its position, ensuring that the columnar space formed by the side plates 404 is compatible with the ball size.

[0065] The Z-axis drive mechanism of the robotic arm is activated, causing the discharge pipe 403 to move downwards until it contacts the top surface of the inner ring 421. The discharge pipe 403 continues to move downwards, at which point the inner ring 421 can no longer move, causing relative sliding between the vertical plate 411 and the discharge pipe 403 and compressing the spring 414. The balls inside the discharge pipe 403 move downwards synchronously with the pipe body. The lower end is blocked by the baffle 405, forming an internal squeezing force, which pushes the baffle 405 open, causing the balls to be squeezed out one by one until there are enough balls. After filling, the discharge pipe 403 is moved upwards. At this time, the balls inside the discharge pipe 403 lose pressure, and the baffle 405 pops out under the action of the torsion spring 4051 to stop the balls from falling further. Then, the rotating frame 200 is activated to rotate the filled bearing 300 to the next station, where the worker resets the inner ring of the bearing 300. After that, the subsequent cage installation is carried out to complete the assembly of the bearing 300.

[0066] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A ball bearing filling robot arm for assembling silent nut bearing housings, comprising a worktable, characterized in that: The workbench is equipped with a filling assembly for filling balls between the inner and outer rings of the bearing. The filling assembly includes a storage tank for storing balls, a discharge pipe, and several side plates slidably connected to the outlet of the discharge pipe. The inner side wall of the side plate is hinged to the bottom with an outward-extending baffle for controlling the falling of the balls. The discharge pipe is equipped with a telescopic structure for controlling the up and down extension of the side plates. When filling balls, when the telescopic structure abuts against the bearing, the side plates and the discharge pipe slide relative to each other, causing the balls to squeeze the baffle and thus squeeze the balls into the gap between the inner and outer rings of the bearing. The bottom periphery of the side plate is provided with an adjustment structure for controlling the radial position of the side plate to correspond with the size of the ball. The adjustment structure includes an inner ring fixed to the bottom end of the telescopic structure and an outer ring rotatably connected to the outside of the inner ring. The outer ring and the side plate are connected by several transmission mechanisms. Before filling the ball, rotating the outer ring drives several side plates to move radially synchronously through the transmission mechanism to adjust the diameter of the released ball.

2. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 1, characterized in that: The bottom of the storage hopper is connected to the top of the discharge pipe through a feeding pipe. The inner wall of the side plate has a groove near the bottom. A shaft is fixed to the top of the groove. A torsion spring is provided between the top of the baffle and the shaft. The two ends of the torsion spring are fixed to the shaft wall and the baffle, respectively.

3. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 2, characterized in that: The telescopic structure includes several vertical plates and fixed blocks that are slidably connected to the corresponding vertical plates. The inner end of the fixed block is fixed to the outer wall of the discharge pipe. A sliding groove is provided in the middle of the vertical plate. The middle part of the fixed block is embedded in the corresponding sliding groove and the two are slidably connected. A sliding rod is fixed between the upper and lower groove surfaces of the sliding groove. The sliding rod passes through the corresponding fixed block and the two are slidably connected. A spring is sleeved on the outer wall of the sliding rod below the fixed block.

4. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 3, characterized in that: The top surface of the inner ring is fixed to the bottom end of the vertical plates. The outer ring wall of the inner ring is fixed with a number of support rods. The inner ring wall of the outer ring is provided with support grooves corresponding to the support rods. The inner wall of the support groove and the outer end of the support rod are provided with magnetic buckles that attract each other. The outer end of the support rod is embedded in the corresponding support groove and the two are slidably connected.

5. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 4, characterized in that: The transmission mechanism includes a rotating cylinder and a threaded rod. The inner end of the threaded rod is fixed to the bottom end of the outer wall of the corresponding side plate. The rotating cylinder radially penetrates the inner ring and the two are rotatably connected. A driven tooth is coaxially fixed to the outer end of the rotating cylinder.

6. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 5, characterized in that: The inner wall of the outer ring is provided with a transmission groove at a position corresponding to the position of the rotating cylinder. The top surface of the transmission groove is fixed with teeth, which mesh with the corresponding driven teeth.

7. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 6, characterized in that: The outer wall of the side plate is symmetrically fixed with limit rods on both sides of the threaded rod near the bottom. The inner ring wall is fixed with a number of limit sleeves corresponding to the limit rods. The outer end of the limit rod is slidably connected to the corresponding limit sleeve.

8. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 7, characterized in that: The minimum torque of the torsion spring is greater than the maximum torque given to the baffle by a number of balls. The magnetic attraction force of the magnetic buckle is greater than the horizontal thrust on the side plate when the balls are extruded, so as to prevent the side plate from expanding outward when the balls are extruded. The distance between the outer wall of the side plate and the inner wall of the discharge tube is greater than the minimum radius of the balls.

9. The ball bearing filling robot arm for assembling a silent nut bearing housing as described in claim 8, characterized in that: The workbench is equipped with a rotating frame, on which several chucks are fixed. The outer ring of the bearing is fixed on the corresponding chuck, and the inner ring of the bearing is placed in contact with the outer ring. The workbench is equipped with a robotic arm that controls the multi-axis movement of the filling assembly.

10. An application of a ball bearing filling robot arm for assembling silent nut bearing housings, as described in claim 9, characterized in that: It is used in the assembly of silent nut bearing housings.

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