Expandable three-axis mechanical arm platform

By designing a scalable three-axis robotic arm platform, the coordinated operation of the rear arm, forearm and screw assembly is used to solve the problems of insufficient strength and expansion of the end of the robotic arm, and the insufficient expansion ability, achieving high-precision and high-strength end movement of the robotic arm, meeting the needs of industrial production.

CN222553604UActive Publication Date: 2025-03-04APE TECH CO LTD
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Patent Information

Application Number
CN202421260610.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-04
Publication Date
2025-03-04
Estimated Expiration
2034-06-04

AI Technical Summary

Technical Problem

The existing robotic arms have problems such as insufficient end strength and insufficient expansion, which leads to the easy displacement of the end actuator during operation, reduces accuracy, and insufficient expansion is not conducive to industrial production.

Method used

A three-axis robotic arm platform is designed to drive the rear arm swing through the rear arm motor, the forearm motor drives the forearm swing, and the screw motor drives the mobile end of the screw assembly to move up and down, and coordinate the movement of the tool assembly, and strengthen and guide the guide shaft to improve the strength and accuracy of the end.

Benefits of technology

Through the coordinated operation of three-axis, the movement accuracy of the tool assembly is improved, the strength of the end of the robot arm is enhanced, the deformation of the end is avoided, and the expansion needs of industrial production are met.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an expandable three-shaft mechanical arm platform which comprises a base, a rear arm, a rear arm motor, a front arm, a front arm motor, a lead screw assembly, a lead screw motor, a guide shaft, a connecting seat, a middle connecting plate and a tool assembly, the rear arm motor is arranged in the base, the rear end of the rear arm is connected with a rotating shaft of the rear arm motor, the front arm motor is arranged at the rear end of the front arm, and the front arm motor is arranged at the rear end of the front arm. The front end of the rear arm is connected with a rotating shaft of the front arm motor, the front end of the front arm is provided with a lead screw assembly and a guide shaft, the lead screw motor is fixed to the middle of the front arm and is in transmission connection with the lead screw assembly, one side of the middle connecting plate is slidably connected with the guide shaft, and the connecting base is fixed to the side, away from the guide shaft, of the middle connecting plate. The tool assembly is detachably connected to the connecting base, the front arm can be driven by the front arm motor to swing along the horizontal plane, and the movable end of the lead screw assembly, the connecting base and the tool assembly can be driven by the lead screw motor to move back and forth in the direction perpendicular to the ground. The strength of the tail end of the mechanical arm is high.
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Description

Technical Field

[0001] The utility model relates to a mechanical arm, in particular to an expandable three-axis mechanical arm platform. Background Art

[0002] Currently, robotic arms such as SCARA (Selective Compliance Assembly Robot Arm) are increasingly widely used in industries such as industry and 3C. However, current robotic arms usually have insufficient end strength. The actuators at the end are prone to displacement during operation, resulting in reduced accuracy. In addition, existing robots also have the problem of insufficient scalability, which is not conducive to industrial production. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the utility model provides an expandable three-axis robotic arm platform, which has the advantage of high end strength of the robotic arm.

[0004] The utility model adopts the following technical solution to solve the technical problem: an expandable three-axis mechanical arm platform, including: a base, a rear arm, a rear arm motor, a forearm, a forearm motor, a screw assembly, a screw motor, a guide shaft, a connecting seat, an intermediate connecting plate and a tool assembly, wherein the rear arm motor is arranged in the base, the rear end of the rear arm is connected to the rotating shaft of the rear arm motor, the forearm motor is arranged at the rear end of the forearm, the front end of the rear arm is connected to the rotating shaft of the forearm motor, the front end of the forearm is provided with a screw assembly and a guide shaft, the screw motor is fixed to the middle part of the forearm, the screw assembly The tool assembly is detachably connected to the connecting seat, and the rear arm can swing along the horizontal plane under the drive of the rear arm motor, and the forearm can swing along the horizontal plane under the drive of the forearm motor, and the moving end of the screw assembly, the connecting seat and the tool assembly can move back and forth in a direction perpendicular to the ground under the drive of the screw motor.

[0005] As an option, the screw rod assembly includes a bottom support plate, a bottom bearing support, a top bearing support, a screw rod and a screw rod nut. The bottom support plate is fixed to the front end of the forearm, the bottom bearing support is fixed to the bottom support plate, the screw rod is perpendicular to the ground, the bottom end of the screw rod can be rotatably connected to the bottom bearing support, the bottom end of the screw rod can pass through the bottom bearing support and the bottom support plate, the first transmission wheel can be fixed to the bottom end of the screw rod, the second transmission wheel is fixed to the rotating shaft of the screw rod motor, the belt is sleeved on the first transmission wheel and the second transmission wheel, the shaft fixing seat is fixed to the bottom support plate, and the guide The bottom end of the shaft is fixed to the shaft fixing seat, the top bearing support and the top of the guide shaft are fixedly connected, the top of the screw rod is rotatably connected to the top bearing support, the screw nut is sleeved on the screw rod and threadedly connected to the screw rod, the screw nut is the moving end of the screw rod assembly, the linear bearing is sleeved on the guide shaft and slidably connected to the guide shaft, the middle connecting plate is fixedly connected to the linear bearing on the side away from the connecting seat, the screw rod can rotate under the drive of the screw motor and drive the screw nut to move up and down along the screw rod, the screw nut can drive the linear bearing to move back and forth along the guide shaft while driving the connecting seat and the tool assembly to move up and down.

[0006] Optionally, a connecting block is protruded from the center of the first transmission wheel, and a connecting hole passes through the center of the first transmission wheel and the center of the connecting block. The bottom of the screw rod can extend into the connecting hole, and a threaded hole is penetrated through the side wall of the connecting block. The top screw can be threadedly connected to the threaded hole, and the end of the top screw can squeeze the side wall of the bottom of the screw rod.

[0007] Optionally, the bottom bearing support is provided with a first bearing hole, the outer ring of the first bearing is connected to the first bearing hole, the bottom end of the screw rod is connected to the inner ring of the first bearing, the top bearing support is provided with a second bearing hole, the outer ring of the second bearing is connected to the second bearing hole, and the top end of the screw rod is connected to the inner ring of the second bearing.

[0008] Optionally, the tool assembly is an electric screwdriver or a glue dispensing machine.

[0009] Optionally, the rear arm motor, the front arm motor and the lead screw motor are all servo motors with a reducer and a brake mechanism.

[0010] The beneficial technical effect of the utility model is as follows: the expandable three-axis mechanical arm platform includes: a base, a rear arm, a rear arm motor, a forearm, a forearm motor, a screw assembly, a screw motor, a guide shaft, a connecting seat, an intermediate connecting plate and a tool assembly. When in use, the rear arm is driven by the rear arm motor to swing along the horizontal plane, the forearm is driven by the forearm motor to swing along the horizontal plane, the moving end of the screw assembly is driven by the screw motor to move up and down in the vertical direction, the moving end of the screw assembly drives the connecting seat and the tool assembly to move up and down, the movement of the tool assembly is realized by the coordinated operation of the three axes, and the product is processed or assembled by the tool assembly. Since a guide shaft is provided, and the moving end of the screw assembly is slidably connected to the guide shaft through the intermediate connecting plate, when the screw motor drives the tool assembly to move up and down, the guide shaft can play a role of reinforcement and guidance, reducing the deformation of the end of the mechanical arm, that is, the screw assembly, due to insufficient strength, and improving the moving accuracy of the end of the mechanical arm. The tool assembly is detachably fixed to the connecting seat, and the user can replace different tool assemblies to achieve different functions. It has the advantage of high strength of the end of the mechanical arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional view of the whole machine of the utility model;

[0012] Figure 2 It is a top view of the whole machine of the utility model;

[0013] Figure 3 It is a side view of the whole machine of the utility model;

[0014] in:

[0015] 1. Base; 2. Rear arm; 3. Front arm; 4. Screw motor; 5. Guide shaft; 6. Connecting seat;

[0016] 7. Tool assembly; 8. Bottom support plate; 9. Bottom bearing support; 10. Top bearing support; 11. Screw; 12. Screw nut; 13. First transmission wheel; 14. Shaft fixing seat; 15. Middle connecting plate; 16. Connecting block; 17. Forearm motor; 18. Linear bearing. DETAILED DESCRIPTION

[0017] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0018] This specific embodiment records in detail the expandable three-axis robotic arm platform described in this application, such as Figure 1-Figure 3As shown, the expandable three-axis robotic arm platform includes: a base 1, a rear arm 2, a rear arm motor, a forearm 3, a forearm motor, a screw assembly, a screw motor 4, a guide shaft 5, a connecting seat 6, an intermediate connecting plate 15 and a tool assembly 7. The rear arm motor is arranged in the base 1, the rear end of the rear arm 2 is connected to the rotating shaft of the rear arm 2 motor, the forearm motor is arranged at the rear end of the forearm 3, the front end of the rear arm 2 is connected to the rotating shaft of the forearm motor, the front end of the forearm 3 is provided with a screw assembly and a guide shaft 5, the screw motor 4 is fixed to the middle part of the forearm 3, and the screw assembly and the guide shaft 5 are perpendicular to the ground. The screw motor 4 drives and connects the screw assembly, the middle part of the intermediate connecting plate 15 is fixedly connected to the moving end of the screw assembly, one side of the intermediate connecting plate 15 is slidably connected to the guide shaft 5, the connecting seat 6 is fixed to the side of the intermediate connecting plate 15 away from the guide shaft 5, the tool assembly 7 is detachably connected to the connecting seat 6, the rear arm 2 can swing along the horizontal plane under the drive of the rear arm motor, the forearm 3 can swing along the horizontal plane under the drive of the forearm motor, and the moving end of the screw assembly, the connecting seat 6 and the tool assembly 7 can move back and forth in a direction perpendicular to the ground under the drive of the screw motor 4. When in use, the rear arm 2 is driven by the rear arm motor to swing along the horizontal plane, the forearm motor is driven by the forearm motor to swing along the horizontal plane, the moving end of the screw assembly is driven by the screw motor 4 to move up and down in the vertical direction, and the moving end of the screw assembly drives the connecting seat 6 and the tool assembly 7 to move up and down, and the movement of the tool assembly 7 is realized through the coordinated operation of the three axes, and the product is processed or assembled by the tool assembly 7. Since a guide shaft 5 is provided, and the moving end of the screw assembly is slidably connected to the guide shaft 5 through the middle connecting plate 15, when the screw motor 4 drives the tool assembly 7 to move up and down, the guide shaft 5 can play a role of reinforcement and guidance, reducing the deformation of the end of the mechanical arm, that is, the screw assembly due to insufficient strength, and improving the moving accuracy of the end of the mechanical arm. In addition, the tool assembly 7 is detachably fixed to the connecting seat 6, and the user can replace different tool assemblies to achieve different functions. It has the advantage of high end strength.

[0019] Optionally, in this embodiment, the screw assembly includes a bottom support plate 8, a bottom bearing support 9, a top bearing support 10, a screw 11 and a screw nut 12, the bottom support plate 8 is fixed to the front end of the forearm 3, the bottom bearing support 9 is fixed to the bottom support plate 8, the screw 11 is perpendicular to the ground, the bottom end of the screw 11 can be rotatably connected to the bottom bearing support 9, the bottom end of the screw 11 can pass through the bottom bearing support 9 and the bottom support plate 8, the first transmission wheel 13 can be fixed to the bottom end of the screw 11, the second transmission wheel is fixed to the rotating shaft of the screw motor 4, the belt is sleeved on the first transmission wheel 13 and the second transmission wheel, the shaft fixing seat 14 is fixed to the bottom support plate 8, and the bottom end of the guide shaft 5 Fixed to the shaft fixing seat 14, the top bearing support 10 and the top of the guide shaft 5 are fixedly connected, the top of the screw rod 11 is rotatably connected to the top bearing support 10, the screw nut 12 is sleeved on the screw rod 11 and is threadedly connected to the screw rod 11, the screw nut 12 is the moving end of the screw assembly, the linear bearing 18 is sleeved on the guide shaft 5 and is slidably connected to the guide shaft 5, the middle connecting plate 15 is fixedly connected to the linear bearing 18 on the side away from the connecting seat 6, the screw rod 11 can rotate under the drive of the screw motor 4 and drive the screw nut 12 to move up and down along the screw rod 11, the screw nut 12 can drive the linear bearing 18 to move back and forth along the guide shaft 5 while driving the connecting seat 6 and the tool assembly 7 to move up and down.

[0020] In this embodiment, optionally, a connecting block 16 is provided at the center of the first transmission wheel 13, a connecting hole passes through the center of the first transmission wheel 13 and the center of the connecting block 16, the bottom of the screw rod 11 can extend into the connecting hole, a threaded hole is provided through the side wall of the connecting block 16, a top screw can be threadedly connected to the threaded hole, and the end of the top screw can squeeze the side wall at the bottom of the screw rod 11. The first transmission wheel 13 is fixed by squeezing the side wall at the bottom of the screw rod 11 by the end of the top screw.

[0021] Optionally, in this embodiment, the bottom bearing support 9 is provided with a first bearing hole, the outer ring of the first bearing is connected to the first bearing hole, the bottom end of the screw rod 11 is connected to the inner ring of the first bearing, the top bearing support 10 is provided with a second bearing hole, the outer ring of the second bearing is connected to the second bearing hole, and the top end of the screw rod 11 is connected to the inner ring of the second bearing.

[0022] Optionally in this embodiment, the tool assembly 7 is an electric screwdriver or a glue dispenser. In some optional embodiments, the number of the tool assembly 7 is greater than one.

[0023] In this embodiment, the rear arm motor, the front arm motor and the screw motor 4 are all servo motors with a reducer and a brake mechanism. The use of servo motors can improve the operating accuracy.

[0024] The expandable three-axis robotic arm platform in this embodiment has the advantage of high strength at the end of the robotic arm.

Claims

1. An expandable three-axis robotic arm platform, characterized in that: include: A base (1), a rear arm (2), a rear arm motor, a forearm (3), a forearm motor, a screw assembly, a screw motor (4), a guide shaft (5), a connecting seat (6), an intermediate connecting plate (15) and a tool assembly (7), wherein the rear arm motor is arranged in the base (1), the rear end of the rear arm (2) is connected to the rotating shaft of the rear arm (2) motor, the forearm motor is arranged at the rear end of the forearm (3), the front end of the rear arm (2) is connected to the rotating shaft of the forearm motor, the front end of the forearm (3) is provided with a screw assembly and a guide shaft (5), the screw motor (4) is fixed to the middle part of the forearm (3), the screw assembly and the guide shaft (5) are perpendicular to the ground, and the screw motor ( 4) a transmission connecting screw assembly, wherein the middle part of the intermediate connecting plate (15) is fixedly connected to the movable end of the screw assembly, one side of the intermediate connecting plate (15) is slidably connected to the guide shaft (5), the connecting seat (6) is fixed to the side of the intermediate connecting plate (15) away from the guide shaft (5), the tool assembly (7) is detachably connected to the connecting seat (6), the rear arm (2) can swing along the horizontal plane under the drive of the rear arm motor, the forearm (3) can swing along the horizontal plane under the drive of the forearm motor, and the movable end of the screw assembly, the connecting seat (6) and the tool assembly (7) can move back and forth in a direction perpendicular to the ground under the drive of the screw motor (4).

2. The expandable three-axis robotic arm platform according to claim 1, characterized in that: The screw assembly comprises a bottom support plate (8), a bottom bearing support (9), a top bearing support (10), a screw (11) and a screw nut (12); the bottom support plate (8) is fixed to the front end of the forearm (3); the bottom bearing support (9) is fixed to the bottom support plate (8); the screw (11) is perpendicular to the ground; the bottom end of the screw (11) can be rotatably connected to the bottom bearing support (9); the bottom end of the screw (11) can pass through the bottom bearing support (9) and the bottom support plate (8); the first transmission wheel (13) can be fixed to the bottom end of the screw (11); the second transmission wheel is fixed to the rotating shaft of the screw motor (4); the belt is sleeved on the first transmission wheel (13) and the second transmission wheel; the shaft fixing seat (14) is fixed to the bottom support plate (8); the bottom end of the guide shaft (5) is fixed to the shaft fixing seat (14); The fixed seat (14), the top bearing support (10) and the top of the guide shaft (5) are fixedly connected, the top of the screw rod (11) is rotatably connected to the top bearing support (10), the screw nut (12) is sleeved on the screw rod (11) and is threadedly connected to the screw rod (11), the screw nut (12) is the movable end of the screw rod assembly, the linear bearing (18) is sleeved on the guide shaft (5) and is slidably connected to the guide shaft (5), the side of the middle connecting plate (15) away from the connecting seat (6) is fixedly connected to the linear bearing (18), the screw rod (11) can rotate under the drive of the screw motor (4) and drive the screw nut (12) to move up and down along the screw rod (11), the screw nut (12) can drive the linear bearing (18) to move back and forth along the guide shaft (5) and drive the connecting seat (6) and the tool assembly (7) to move up and down.

3. The expandable three-axis robotic arm platform according to claim 2, characterized in that: A connecting block (16) is protruding from the center of the first transmission wheel (13), a connecting hole passes through the center of the first transmission wheel (13) and the center of the connecting block (16), the bottom of the screw rod (11) can extend into the connecting hole, a threaded hole is passed through the side wall of the connecting block (16), a top screw can be threadedly connected to the threaded hole, and the end of the top screw can squeeze the side wall of the bottom of the screw rod (11).

4. The expandable three-axis robotic arm platform according to claim 2, characterized in that: The bottom bearing support (9) is provided with a first bearing hole, the outer ring of the first bearing is connected to the first bearing hole, the bottom end of the screw rod (11) is connected to the inner ring of the first bearing, the top bearing support (10) is provided with a second bearing hole, the outer ring of the second bearing is connected to the second bearing hole, and the top end of the screw rod (11) is connected to the inner ring of the second bearing.

5. The expandable three-axis robotic arm platform according to claim 1, characterized in that: The tool component (7) is an electric screwdriver or a glue dispensing machine.

6. The expandable three-axis robotic arm platform according to claim 1, characterized in that: The rear arm motor, the front arm motor and the screw motor (4) are all servo motors with a reducer and a brake mechanism.