Ball screw assembly device and method

Abstract

The invention provides a ball screw assembly device and method, relates to the field of assembly equipment, and aims to solve the problem that at present, ball screw assemblies are difficult to assemble in batches, a plurality of screw storage positions in rotary operation are adopted for feeding screws, and an assembly assembly can turn over to drive the screws to adjust the assembly position and the feeding position. The supply assembly can provide matched nuts for the lead screws, the ball loading assembly can feed balls between the lead screws and the nuts and adjust the balls to complete matching, multiple positions are provided for batch assembly, and the assembly efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of assembly equipment, and in particular to a ball screw assembly device and method. Background Art

[0002] Ball screws are technology-intensive products. In recent years, new types and new functions of rolling linear guides have continued to emerge, and they are developing in the direction of high speed, high precision, high rigidity, composite, intelligent, and environmentally friendly. In addition to the high precision required in manufacturing, the assembly process of ball screws is also very important, and the nut beading process is an important part of it. The nut beading has the requirements of strong assembly stability, high assembly quality, and high efficiency, and the accuracy must be guaranteed to meet the normal use and maintenance needs after assembly.

[0003] A Chinese patent (publication number: CN 116638292 A) discloses an intelligent ball loading device for a ball linear guide, which uses a grabbing system to grab a slider to a workbench, and then uses a slider moving and positioning system to move and position the slider so that the slider is opposite to the ball loading system. The feeding system transports the balls to the ball loading system, and the slider is loaded with balls by the ball loading system. After the loading is completed, the slider is removed by the moving positioning system in cooperation with the grabbing system to complete the loading work; however, its work efficiency is relatively low. During feeding and assembly, the beads can only be loaded at a single slider position, which makes it difficult to achieve mass production; in addition, unlike the distribution of balls in a ball linear guide, the ball screw pair is distributed in a spiral line in the nut, and the balls will not fall smoothly and will be stuck when the balls are installed. In this assembly process, the balls will leak and fall off due to the sticking, which will affect the stable operation of the ball screw pair and reduce the qualified rate. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and to provide a ball screw pair assembly device and method, which adopts multiple rotating screw storage positions to load the screw, the assembly component can flip and drive the screw to adjust the assembly position and the loading position, the supply component can provide a matching nut for the screw, the ball loading component can feed the ball between the screw and the nut and adjust the ball to make them fit, and multiple positions are provided for batch assembly to improve assembly efficiency.

[0005] The first object of the present invention is to provide a ball screw assembly device, which adopts the following scheme:

[0006] include:

[0007] The rod storage assembly is provided with a plurality of rod storage positions for rotating operation, and the rod storage positions are used to carry the lead screw to be assembled;

[0008] The assembly assembly includes a turning frame and a rotary chuck. A turning plate of the turning frame is provided with a plurality of rotary chucks. The rotary chuck is provided with a clamping position for receiving a lead screw. The turning frame drives the turning plate to adjust the direction of the clamping position.

[0009] The supply assembly includes a rotary lifting mechanism, a carrier and a manipulator, wherein the carrier is installed at the output end of the rotary lifting mechanism, the carrier is provided with a manipulator facing the clamping position and corresponding to the clamping position one by one, and the manipulator is provided with a nut position for accommodating the nut to be assembled;

[0010] The bead loading assembly includes a bead storage tube and a bead sweeper. The bead sweeper is provided with a bead sweeping claw capable of three-axis movement. The output end of the bead storage tube faces the clamping position. The bead sweeping claw is spaced apart from the bead storage tube to act on the ball matched with the nut and the lead screw.

[0011] Furthermore, the storage bar assembly is provided with a working section corresponding to the rotary chuck, the storage bar position on the working section corresponds one to one with the rotary chuck, and a pushing rod is provided on one side of the storage bar position on the working section.

[0012] Furthermore, it also includes a loading component, which includes a conveyor belt and a loading machine. One end of the conveyor belt is connected to the loading machine, and the other end is connected to the storage rod component to load the lead screws one by one to the storage rod position.

[0013] Furthermore, in the rotating direction of the storage bar assembly, the rotary chucks are arranged in sequence on the flip plate at intervals. The first posture of the rotary chuck makes the clamping position face the storage bar position, and the second posture of the rotary chuck makes the clamping position face the bead storage tube. The flip frame drives the rotary chuck to adjust the posture.

[0014] Furthermore, the rotary lifting mechanism is provided with at least two bearing frames, which are spaced apart along the rotating direction of the rotary lifting mechanism. When the manipulator is driven to the clamping position by the rotary lifting mechanism, the nut position corresponds to the clamping position one by one to assemble the lead screw and the nut.

[0015] Furthermore, the rotary lifting mechanism includes a lifting column and a rotary mechanism, the carrier is installed on the lifting column through the lifting mechanism, the lifting column is connected to the output end of the rotary mechanism, and the carrier is driven by the lifting mechanism to lift in a direction parallel to the nut axis.

[0016] Furthermore, the bead loading assembly also includes a bead storage bucket and a bead transport plate. The bead transport plate is slidably fitted on the bottom of the bead storage bucket. The bead transport plate connects the bead storage bucket and the bead storage tube to transport the balls in the bead storage bucket to the bead storage tube one by one. An electromagnetic valve is installed at the output end of the bead storage tube, and a camera is installed on the bead sweeper.

[0017] Furthermore, the bead loading assembly is connected with a propulsion mechanism and a transverse movement mechanism, and the propulsion mechanism and the transverse movement mechanism drive the bead loading assembly to run along two-axis directions to drive the bead storage tube and the bead sweeper to adjust their positions.

[0018] A second object of the present invention is to provide a working method of the ball screw assembly device as described in the first object, comprising:

[0019] The lead screw to be assembled is loaded to the rod storage position, and the flip plate drives the flip frame to adjust its posture so that the clamping position faces the rod storage position, and the lead screw in the rod storage position is pushed to the clamping position and clamped;

[0020] The flip plate drives the flip frame to adjust its posture so that the clamping position faces the bead storage tube, the manipulator clamps the nut, and the carrier drives the manipulator to rotate and adjust to the position of the lead screw and fall, so that the nut is sleeved outside the lead screw;

[0021] The output end of the ball storage tube faces the screw on the clamping position, and the balls are discharged so that the balls enter the gap between the screw and the nut;

[0022] Adjust the position of the ball storage tube and the ball sweeper so that the ball sweeper acts on the balls matched by the lead screw and the nut, so that all the balls enter the gap;

[0023] The rotary chuck rotates to complete the assembly of the lead screw and the nut, and the rotary lifting mechanism drives the assembled lead screw and the nut to be unloaded through the manipulator.

[0024] Furthermore, the number of balls discharged from the ball storage tube is controlled, and when the balls are discharged, the rotary chuck can drive the lead screw to rotate relative to the nut.

[0025] Compared with the prior art, the present invention has the following advantages and positive effects:

[0026] (1) In view of the current problem that ball screw pairs are difficult to assemble in batches, multiple rotating screw storage positions are used to load the screws. The assembly component can flip and drive the screw to adjust the assembly position and loading position. The supply component can provide a matching nut for the screw. The ball loading component can insert the ball between the screw and the nut and adjust the ball to make them fit together. Multiple positions are provided for batch assembly to improve assembly efficiency.

[0027] (2) The rotary chuck can load the lead screw to be assembled to the screw storage position. During assembly, the rotary chuck can drive the lead screw to rotate slightly to disturb the ball and reduce the problem of ball sticking. Combined with the moving action of the ball sweeper, the ball can be assembled smoothly, reducing the problem of ball sticking, thereby reducing the problem of ball leakage and ball falling. After the ball is assembled, the rotary chuck can drive the lead screw to rotate, change the axial position of the lead screw and the nut, and seal the position where the ball enters the gap between the lead screw and the nut to prevent the ball from falling off, thereby ensuring the integrity of the workpiece after unloading after assembly and improving the qualified rate.

[0028] (3) The supply mechanism adopts a rotary lifting mechanism and allocates multiple groups of carriers for alternating and cyclic operation. After the assembly of the lead screw, nut and ball is completed to form a ball screw pair, the robot is driven by the rotary lifting mechanism to clamp it out directly. At this time, the next group of lead screws on the storage rod assembly is ready, and the next group of balls is filled in the ball storage tube. The nut on another carrier follows the rotation of the rotary lifting mechanism to load the material and start the next round of assembly. After the lead screw is installed, the nut falls for installation, and the ball storage tube discharges the balls for loading. After installation, it is clamped out again and the cycle continues to improve installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] Figure 1 Schematic diagram of the ball screw assembly device in Examples 1 and 2 of the present invention.

[0031] Figure 2 Schematic diagram of the ball sweeping brush of the ball screw assembly device in Examples 1 and 2 of the present invention.

[0032] Figure 3 It is a schematic diagram of the connection between the feeding assembly and the storage bar assembly in Examples 1 and 2 of the present invention.

[0033] Among them, 1. feeding assembly; 2. feeding drive; 3. storage bar assembly; 4. turning frame; 5. turning drive; 6. lead screw; 7. rotary chuck; 8. chuck drive; 9. first lifting drive; 10. supporting frame; 11. rotary drive; 12. manipulator; 13. manipulator drive; 14. nut; 15. second lifting drive; 16. bead sweeper; 17. bead sweeping drive; 18. camera; 19. bead storage bucket; 20. sweeping brush drive; 21. bead sweeping brush; 22. bead transport plate; 23. counter; 24. bead storage tube; 25. solenoid valve; 26. propulsion drive; 27. slide rail; 28. bead loading table; 29. ​​transverse drive; 30. push rod. DETAILED DESCRIPTION

[0034] Example 1

[0035] In a typical embodiment of the present invention, Figure 1-Figure 3 As shown, a ball screw assembly device is provided.

[0036] In the prior art, the assembly process of the ball screw pair is inefficient and has the problem of low assembly precision; the traditional assembly method is difficult to achieve mass production, which limits the production scale and efficiency. Based on this, the present embodiment provides a ball screw pair assembly device, which uses multiple rotating storage positions to feed the screw 6, the assembly component can flip and drive multiple screws 6 to adjust the assembly position and the feeding position at the same time, the supply component can provide a matching nut 14 for the screw 6, and the ball assembly component can feed the ball between the screw 6 and the nut 14 and adjust the ball to complete the matching, providing multiple positions for batch assembly to improve assembly efficiency.

[0037] like Figure 1 As shown, the ball screw assembly device includes a storage assembly 3, an assembly assembly, a supply assembly and a ball installation assembly, which realizes the automatic loading, positioning, assembly and ball installation of the ball screw pair.

[0038] The storage rod assembly 3 is provided with a plurality of storage rod positions for rotating operation, which are used to carry the lead screws 6 to be assembled and prepare them for subsequent assembly. By rotating operation, the storage space can be efficiently managed and utilized, and automatic loading is facilitated.

[0039] The assembly component includes a flip frame 4 and a rotary chuck 7. A plurality of rotary chucks 7 are arranged on the flip plate of the flip frame 4. Each rotary chuck 7 is provided with a clamping position for receiving the lead screw 6. The flip frame 4 drives the flip plate to adjust the direction of the clamping position. By flipping and adjusting the position, the receiving action during the loading process is realized, and it can be flipped to the assembly position, which is convenient for cooperation with the nut 14.

[0040] The supply assembly includes a rotary lifting mechanism, a carrier frame 10 and a manipulator 12. The carrier frame 10 is installed at the output end of the rotary lifting mechanism. The carrier frame 10 is provided with a manipulator 12 facing the clamping position and corresponding to the clamping position one by one. The manipulator 12 is provided with a nut 14 position for accommodating the nut 14 to be assembled. Through the cooperation of the rotary lifting mechanism and the manipulator 12, the nut 14 can be accurately positioned and provided, thereby improving the accuracy and efficiency of assembly.

[0041] The bead loading assembly includes a bead storage tube 24 and a bead sweeper 16. The bead sweeper 16 is provided with a bead sweeping claw that can move in three axes. The output end of the bead storage tube 24 faces the clamping position. The bead sweeping claw is arranged at intervals with the bead storage tube 24 to act on the ball matched with the nut 14 and the lead screw 6. The three-axis movable bead sweeping claw can accurately control the feeding and adjustment of the ball, ensuring that the ball is accurately matched with the lead screw 6 and the nut 14.

[0042] The flip frame 4 and the rotary chuck 7 in the assembly component can accurately adjust the position of the screw 6, the manipulator 12 in the supply component can accurately place the nut 14, and the ball loading component can accurately deliver the ball between the screw 6 and the nut 14, thereby ensuring the assembly accuracy.

[0043] The storage rod assembly 3 of the device is provided with a plurality of storage rod positions, which can simultaneously assemble a plurality of ball screw pairs, thus realizing batch production and improving production efficiency.

[0044] In this embodiment, Figure 1 and Figure 3 As shown, the storage bar assembly 3 is provided with a working section corresponding to the rotary chuck 7, and the storage bar position on the working section corresponds to the rotary chuck 7 one by one. A push rod 30 is provided on one side of the storage bar position on the working section. The working section is located at the upper section of the rotary structure of the storage bar assembly 3. After the lead screw 6 in the storage bar position in the working section space is pushed to the clamping position by the push rod 30, the storage bar position can be moved outside the working section to wait for the lead screw 6 to be loaded and filled and transported again. Through the rotary action, the lead screw 6 can be loaded to the storage bar position one by one and then transported to the clamping position in batches.

[0045] The storage rod assembly 3 can adopt a rotary belt, on which a plurality of hole structures are arranged, and the hole structures serve as storage rod positions for accommodating the lead screw 6. The push rod 30 can adopt a cylinder arranged on one side of the storage rod assembly 3, and the cylinder rod can push the lead screw 6 in the storage rod position, and push the lead screw 6 out of the storage rod position, so that one end of the lead screw 6 reaches the clamping position of the rotary chuck 7, completing the feeding process of the lead screw 6 from the storage rod assembly 3 to the assembly assembly. In other optional embodiments, the hole structure can also adopt an arc groove structure to match the lead screw 6.

[0046] like Figure 1 and Figure 3 As shown, the feeding of the lead screw 6 on the storage bar assembly 3 is solved by configuring a feeding assembly 1, which includes a conveyor belt and a feeding machine. One end of the conveyor belt is connected to the feeding machine, and the other end is connected to the storage bar assembly 3, so as to feed the lead screw 6 to the storage bar position one by one. The feeding machine can adopt a stepped structure, and the lead screw 6 is transported to the conveyor belt by alternating the rise and fall of the steps.

[0047] The conveyor belt is equipped with a feeding drive 2, which can drive the conveyor belt to rotate. The surface of the conveyor belt is a groove structure that carries the lead screw 6, so that the lead screw 6 can be placed in the rod storage position at the end.

[0048] The screw 6 is transferred by the feeding assembly 1 into the storage position of the storage assembly 3, and the storage assembly 3 drives the storage position to align with the clamping position. The storage position and the clamping position of the working section have corresponding meanings. Figure 1 As shown, in this embodiment, five rod storage positions are distributed in the working section, and the five rod storage positions can accommodate five lead screws 6 and correspond to the five clamping positions.

[0049] like Figure 1As shown, in the rotation direction of the storage bar assembly 3, the rotary chucks 7 are arranged in sequence on the flip plate at intervals, the first posture of the rotary chuck 7 makes the clamping position face the storage bar position, and the second posture of the rotary chuck 7 makes the clamping position face the bead storage tube 24, and the flip frame 4 drives the rotary chuck 7 to adjust the posture. The flip frame 4 is also provided with a flip driving member 5, which can be an electric swing cylinder, a motor, a hydraulic swing cylinder and other components, and can drive the flip frame 4 to flip, and drive the rotary chuck 7 to switch between the first posture and the second posture.

[0050] In this embodiment, after the clamping member completes clamping the lead screw 6, the rotating chuck rotates 90 degrees through the flip driving member 5, so that the clamping position is aligned with the rod storage position, and at this time, the push rod 30 of the rod storage assembly 3 pushes the lead screw 6 into the upper clamping position of the rotary chuck 7. After the clamping position completes clamping the lead screw 6, the rotating chuck rotates 90 degrees in the opposite direction through the flip driving member 5, so that the clamping position faces the bead storage tube 24.

[0051] like Figure 1 As shown, the rotary chuck 7 includes a chuck and a chuck driver 8. The chuck can be clamped or released. The area where the chuck claws clamp the lead screw 6 is used as the clamping position. The chuck driver 8 can drive the chuck and the clamped lead screw 6 to rotate around the axis of the lead screw 6 to meet the needs of adjusting the circumferential position of the lead screw 6 and filling the ball between the auxiliary lead screw 6 and the nut 14. When all the work is completed, the lead screw 6 rotates a part to prevent the ball from accidentally slipping out.

[0052] like Figure 1 As shown, at least two carriers 10 are provided on the rotary lifting mechanism, and the carriers 10 are spaced apart along the rotary direction of the rotary lifting mechanism. When the manipulator 12 is driven to the clamping position by the rotary lifting mechanism, the nut 14 corresponds to the clamping position one by one, so that the lead screw 6 and the nut 14 are assembled. The rotary lifting mechanism includes a lifting column and a rotary mechanism, and the carriers 10 are respectively installed on the lifting columns through the lifting mechanism, and the lifting columns are connected to the output end of the rotary mechanism. The lifting direction of the carrier 10 driven by the lifting mechanism is parallel to the axis of the nut 14.

[0053] In this embodiment, two lifting mechanisms are provided, which are matched with two carriers 10 respectively. One carrier 10 is installed on the lifting column through the first lifting mechanism, and the first lifting mechanism is matched with the first lifting drive 9. The other carrier 10 is installed on the lifting column through the second lifting mechanism, and the second lifting mechanism is matched with the second lifting drive 15. The lifting mechanism can adopt an electric cylinder, a lead screw 6 slider mechanism, etc. When the lifting mechanism adopts an electric cylinder, the first lifting drive 9 and the second lifting drive 15 can both adopt electric motors.

[0054] The rotary mechanism can adopt a structure in which a rotary drive member 11 cooperates with a base, the lifting column is installed on the base, and the base is installed on the rotary drive member 11. The rotary drive member 11 drives the lifting column and the carrier frame 10 and the manipulator 12 thereon to rotate and adjust the position. The rotary drive member 11 can be an electric motor, a rotary cylinder, etc. The rotary mechanism can drive the manipulator 12 to rotate, so that the manipulator 12 moves the assembled lead screw 6 and the nut 14 from the clamping position to unload, and at the same time, loads the nut 14 clamped by the manipulator 12 on another carrier frame 10 to the clamping position for assembly.

[0055] The manipulator 12 is equipped with a manipulator driving component 13, which can drive the manipulator 12 to clamp and release to control the clamping of the nut 14. After the nut 14 is clamped by the manipulator 12, it is lifted by the lifting mechanism and moved to the top of the lifting column, and then rotated 180 degrees. When the screw 6 is ready, it is controlled to fall above the screw 6.

[0056] like Figure 1 and Figure 2 As shown, the bead loading assembly also includes a bead storage bucket 19 and a bead transport plate 22. The bead transport plate 22 is slidably fitted on the bottom of the bead storage bucket 19. The bead transport plate 22 connects the bead storage bucket 19 and the bead storage tube 24 to transport the balls in the bead storage bucket 19 to the bead storage tube 24 one by one. An electromagnetic valve 25 is installed at the output end of the bead storage tube 24, and a camera 18 is installed on the bead sweeper 16.

[0057] The bead sweeper 16 is driven by a bead sweeping driving member 17. Three bead sweeping driving members 17 are provided to respectively control the bead sweeping claws of the bead sweeper 16 to complete the movement in three axes. The camera 18 works simultaneously with the bead sweeper 16 to obtain the distribution state of the balls at the assembly position of the lead screw 6 and the nut 14, so that the bead sweeping claws can move and adjust the balls.

[0058] The bead storage barrel 19 contains balls, and a hole slightly larger than the ball is provided at the bottom of the bead storage barrel 19, and a ball transporting plate 22 is provided below. The ball transporting plate 22 can reciprocate, and a sweeping brush 21 is also provided in the bead storage barrel 19. The sweeping brush 21 makes the balls in the bead storage barrel 19 move so as to discharge the balls from the hole at the bottom of the bead storage barrel 19. The ball transporting plate 22 is provided with a ball transporting hole for accommodating the balls. When the balls fall from the bead storage barrel 19 into the ball transporting hole of the ball transporting plate 22, the reciprocating driving element of the ball transporting plate 22 pushes the ball transporting plate 22 to move forward until the ball transporting hole is aligned with the entrance hole of the bead storage tube 24, and the balls fall into the bead storage tube 24. At this time, the count display increases by one, and the number increases by one when one ball falls. In this embodiment, the bead storage tube 24 can accommodate 10 balls, and the ball transporting plate 22 transports the balls into the bead storage tube 24 until the counter 23 displays ten balls.

[0059] The main body of the bead loading assembly is the bead loading platform 28, the lower part of the bead loading platform 28 is installed at the output end of the transverse movement mechanism through the slide rail 27, the propulsion mechanism is connected to the bead loading platform 28, the transverse movement mechanism can drive the propulsion mechanism and the bead loading assembly to move transversely, and the propulsion mechanism and the transverse movement mechanism drive the bead loading assembly to run along the two-axis direction to drive the bead storage tube 24 and the bead sweeper 16 to adjust the position. After the nut 14 is installed, the bead loading assembly moves to the front on the slide rail 27, so that the bead storage tube 24 is aligned with the nut 14, and the solenoid valve 25 is opened at this time, and the ball enters the nut 14.

[0060] The bead loading platform 28 carries the entire bead loading assembly and is controlled to move left and right through the transverse driving component 29. When the solenoid valve 25 opens and the ball is ready, the entire part moves so that the bead sweeper 16 and the nut 14 are on the same vertical plane. At this time, the entire part moves backward through the slide rail 27 to move the bead sweeper 16 above the nut 14. At this time, the bead sweeper 16 can be controlled by three bead sweeping driving components 17 to move in three directions.

[0061] like Figure 3 As shown, the feed assembly 1 uses the lead screw 6 to send it to the conveyor belt, and then to the storage position of the storage assembly 3. When the lead screw 6 completely enters the storage position, the storage assembly 3 moves to the next position. When all five storage positions are filled (increase or decrease according to efficiency or needs, in this embodiment, the working section takes 5 lead screws 6 as an example), the carrier 10 drives the rotary chuck 7 to rotate toward the storage assembly 3, so that the five lead screws 6 are pushed into the five rotary chucks 7 for fixing and clamping, and finally return to the initial position. When the five lead screws 6 are pushed into the rotary chuck 7, the storage assembly 3 will work repeatedly until the fifth one is reached, and it can be directly pushed into the chuck when waiting for the next cycle, which is convenient for improving efficiency and saving time.

[0062] Example 2

[0063] In another typical embodiment of the present invention, Figure 1-Figure 3 As shown, a working method of a ball screw pair assembly device is provided, using the ball screw pair assembly device as in Example 1.

[0064] A working method of a ball screw assembly device, comprising:

[0065] The lead screw to be assembled is loaded to the rod storage position 6, and the flip plate drives the flip frame 4 to adjust the posture so that the clamping position faces the rod storage position, and the lead screw 6 in the rod storage position is pushed to the clamping position and clamped;

[0066] The flip plate drives the flip frame 4 to adjust the posture so that the clamping position faces the bead storage tube 24, the manipulator 12 clamps the nut 14, and the carrier 10 drives the manipulator 12 to rotate and adjust to the position of the lead screw 6 and fall, so that the nut 14 is sleeved outside the lead screw 6;

[0067] The output end of the ball storage tube 24 faces the screw 6 on the clamping position, and the balls are discharged so that the balls enter the gap between the screw 6 and the nut 14;

[0068] Adjust the positions of the bead storage tube 24 and the bead sweeper 16 so that the bead sweeper 16 acts on the balls matched by the lead screw 6 and the nut 14, so that all the balls enter the gap;

[0069] The rotary chuck 7 rotates to complete the assembly of the lead screw 6 and the nut 14, and the rotary lifting mechanism drives the assembled lead screw 6 and the nut 14 to be unloaded through the manipulator 12.

[0070] The number of balls discharged from the ball storage tube 24 is controlled. When the balls are discharged, the rotary chuck 7 can drive the lead screw 6 to rotate relative to the nut 14.

[0071] A micro camera 18 is installed for real-time observation. When the ball flows into the screw nut 14, the electronic valve is closed, and the bead loading assembly moves along the x-axis and y-axis in a certain direction to make the central axis of the bead sweeper 16 coincide with the central axis of the screw nut 14, and the bead picking begins. The bead sweeper moves in three directions to accurately sweep the beads, and the micro camera 18 observes. After the installation is completed, it returns to the initial test position to facilitate the removal of the ball screw pair and the start of the next cycle. The supply mechanism adopts a rotary lifting mechanism and allocates multiple groups of carriers 10 for alternating cycle operation. After the screw 6, nut 14 and ball are assembled to form a ball screw pair, the manipulator 12 is driven by the rotary lifting mechanism to clamp it out directly. At this time, the next group of screws 6 on the storage rod assembly 3 is ready, and the next group of balls is filled in the ball storage tube 24. The nut 14 on the other carrier 10 follows the rotation of the rotary lifting mechanism for loading, and the next round of assembly begins. After the screw 6 is installed, the nut 14 falls for installation, and the ball storage tube 24 discharges the balls for loading. After installation, it is clamped out and the cycle continues to improve the installation efficiency.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ball screw assembly device, characterized in that: include: The rod storage assembly is provided with a plurality of rod storage positions for rotating operation, and the rod storage positions are used to carry the lead screw to be assembled; The assembly assembly includes a turning frame and a rotary chuck. A turning plate of the turning frame is provided with a plurality of rotary chucks. The rotary chuck is provided with a clamping position for receiving a lead screw. The turning frame drives the turning plate to adjust the direction of the clamping position. The supply assembly includes a rotary lifting mechanism, a carrier and a manipulator, wherein the carrier is installed at the output end of the rotary lifting mechanism, the carrier is provided with a manipulator facing the clamping position and corresponding to the clamping position one by one, and the manipulator is provided with a nut position for accommodating the nut to be assembled; The bead loading assembly includes a bead storage tube and a bead sweeper. The bead sweeper is provided with a bead sweeping claw capable of three-axis movement. The output end of the bead storage tube faces the clamping position. The bead sweeping claw is spaced apart from the bead storage tube to act on the ball matched with the nut and the lead screw.

2. The ball screw assembly device according to claim 1, characterized in that: The storage bar assembly is provided with a working section corresponding to the rotary chuck, the storage bar positions on the working section correspond to the rotary chuck one by one, and a pushing rod is provided on one side of the storage bar position on the working section.

3. The ball screw assembly device according to claim 2, characterized in that: It also includes a loading component, which includes a conveyor belt and a loading machine. One end of the conveyor belt is connected to the loading machine, and the other end is connected to the storage rod component to load the lead screws one by one to the storage rod position.

4. The ball screw assembly device according to claim 3, characterized in that: In the rotating direction of the storage bar assembly, the rotary chucks are arranged in sequence on the flip plate at intervals. The first posture of the rotary chuck makes the clamping position face the storage bar position, and the second posture of the rotary chuck makes the clamping position face the bead storage tube. The flip frame drives the rotary chuck to adjust the posture.

5. The ball screw assembly device according to claim 1, characterized in that: The rotary lifting mechanism is provided with at least two bearing frames, which are spaced apart along the rotary direction of the rotary lifting mechanism. When the manipulator is driven to the clamping position by the rotary lifting mechanism, the nut position corresponds to the clamping position one by one, so that the lead screw and the nut can be assembled.

6. The ball screw assembly device according to claim 5, characterized in that: The rotary lifting mechanism comprises a lifting column and a rotary mechanism. The carrier is respectively installed on the lifting column through the lifting mechanism. The lifting column is connected to the output end of the rotary mechanism. The lifting direction of the carrier is parallel to the nut axis driven by the lifting mechanism.

7. The ball screw assembly device according to claim 1, characterized in that: The bead loading assembly also includes a bead storage bucket and a bead transport plate. The bead transport plate is slidably fitted on the bottom of the bead storage bucket. The bead transport plate connects the bead storage bucket and the bead storage tube to transport the balls in the bead storage bucket to the bead storage tube one by one. An electromagnetic valve is installed at the output end of the bead storage tube, and a camera is installed on the bead sweeper.

8. The ball screw assembly device according to claim 7, characterized in that: The bead loading assembly is connected with a propulsion mechanism and a transverse movement mechanism, and the propulsion mechanism and the transverse movement mechanism drive the bead loading assembly to run along two-axis directions, so as to drive the bead storage tube and the bead sweeper to adjust their positions.

9. A working method of a ball screw assembly device, using the ball screw assembly device as claimed in any one of claims 1 to 8, characterized in that: include: The lead screw to be assembled is loaded to the rod storage position, and the flip plate drives the flip frame to adjust its posture so that the clamping position faces the rod storage position, and the lead screw in the rod storage position is pushed to the clamping position and clamped; The flip plate drives the flip frame to adjust its posture so that the clamping position faces the bead storage tube, the manipulator clamps the nut, and the carrier drives the manipulator to rotate and adjust to the position of the lead screw and fall, so that the nut is sleeved outside the lead screw; The output end of the ball storage tube faces the screw on the clamping position, and the balls are discharged so that the balls enter the gap between the screw and the nut; Adjust the position of the bead storage tube and the bead sweeper so that the bead sweeper acts on the balls matched by the lead screw and the nut, so that all the balls enter the gap; the rotary chuck rotates to complete the assembly of the lead screw and the nut, and the rotary lifting mechanism drives the assembled lead screw and nut to unload through the manipulator.

10. The working method of the ball screw assembly device according to claim 9, characterized in that: The number of balls discharged from the ball storage tube is controlled. When the balls are discharged, the rotary chuck can drive the lead screw to rotate relative to the nut.

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