Load reducing device for mechanical arm

Abstract

The utility model discloses a load reducing device for a mechanical arm, which belongs to the technical field of mechanical arms and comprises a processing jig, a connecting plate is fixedly connected to the inner side wall of the processing jig, a fixing plate is fixedly connected to the upper surface of the connecting plate, a butt joint seat is fixedly connected to the upper surface of the fixing plate, and a clamping seat is fixedly connected to the inner upper surface of the butt joint seat. A reinforcing plate is fixedly connected to the upper surface of the clamping seat, a connecting frame is fixedly connected to the upper surface of the reinforcing plate, a connecting shaft is fixedly connected to the interior of the connecting frame, and a mechanical arm C-axis motor is arranged above the connecting frame. The mechanical arm load reducing device can effectively reduce the influence of the force arm on normal rotation of the mechanical arm C-axis motor, so that the strength of the acting force of the mechanical arm C-axis motor on the force arm is reduced when a machining jig rotates, the load of the mechanical arm C-axis motor is reduced, the load alarm of the mechanical arm C-axis motor is prevented, the load of the mechanical arm is reduced, and the machining efficiency is improved. And the use performance of the mechanical arm is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of robotic arm technology, and in particular relates to a robotic arm load reduction device. Background Technology

[0002] Robotic arms are the most widely used automated mechanical devices in the field of robotics, found in industrial manufacturing, medical treatment, entertainment services, military, semiconductor manufacturing, and space exploration. Although they vary in form, they all share a common characteristic: they can receive commands and precisely position themselves at a point in three-dimensional (or two-dimensional) space to perform tasks.

[0003] When existing robotic arms are used in conjunction with long fixtures or other equipment, the long lever arm can cause the C-axis motor to be under heavy load during rotation. This can lead to servo C-axis alarms, failure to rotate to the limit position due to heavy load, or overload alarms, which greatly affect the performance of the robotic arm.

[0004] To address this issue, we propose a device to reduce the load on robotic arms. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that the mechanical arm cannot reduce the load and that the C-axis motor of the mechanical arm is subject to a large load during rotation due to the long lever arm. Therefore, a mechanical arm load reduction device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A robotic arm load-reducing device includes a processing fixture. A connecting plate is fixedly connected to the inner sidewall of the processing fixture. A fixing plate is fixedly connected to the upper surface of the connecting plate. A docking seat is fixedly connected to the upper surface of the fixing plate. A snap-fit ​​seat is fixedly connected to the inner upper surface of the docking seat. A reinforcing plate is fixedly connected to the upper surface of the snap-fit ​​seat. A connecting frame is fixedly connected to the upper surface of the reinforcing plate. A connecting shaft is fixedly connected inside the connecting frame. A robotic arm C-axis motor is arranged above the connecting frame. The output end of the robotic arm C-axis motor is fixedly connected to one end of the connecting shaft.

[0008] Preferably, each side of the processing fixture is threaded with two first bolts, and the end of each first bolt near the connecting plate penetrates the processing fixture and extends into the interior of the connecting plate. The outer surface of each first bolt is threadedly connected to the inner wall of the connecting plate.

[0009] Preferably, the fixing plate has two second bolts connected to its internal thread. The bottom ends of the two second bolts penetrate the fixing plate and extend into the interior of the connecting plate. The outer surfaces of the two second bolts are threaded to the inner wall of the connecting plate.

[0010] Preferably, the bottom surface of the fixing plate is fixedly connected to two reinforcing ribs, and the back sides of the two reinforcing ribs are fixedly connected to the front side of the connecting plate.

[0011] Preferably, two stabilizing blocks are fixedly connected to both the front and back of the docking seat, and the bottom surface of each stabilizing block is fixedly connected to the upper surface of the fixing plate.

[0012] Preferably, two limiting rings are fixedly connected to the outer surface of the connecting shaft, and the two limiting rings are fixedly connected to the front and back sides of the connecting frame respectively on their sides that are close to each other.

[0013] Preferably, a mounting plate is fixedly connected to the upper surface of the C-axis motor of the robotic arm, and the upper surface of the mounting plate has four mounting through holes.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] By incorporating a connecting plate and a fixing plate, the C-axis motor of the robotic arm can be moved from its position at the top of the machining fixture to its position in the middle of the fixture using a docking seat and a snap-fit ​​seat. When the C-axis motor is in the middle of the fixture, it drives the fixture to rotate 180 degrees via the connecting shaft, connecting frame, and reinforcing plate. This effectively reduces the impact of the lever arm on the rotation of the C-axis motor, lowering the force exerted on the C-axis motor during fixture rotation. This reduces the load on the C-axis motor, prevents load alarms, and ultimately lightens the load on the robotic arm, ensuring its performance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the processing fixture of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the card holder of this utility model;

[0018] Figure 3 This is a three-dimensional cross-sectional structural diagram of the connecting frame of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram showing the C-axis motor of the robotic arm after load reduction.

[0020] In the diagram: 1. Machining fixture; 2. Connecting plate; 3. Fixing plate; 4. Docking seat; 5. Snap-fit ​​seat; 6. Reinforcing plate; 7. Connecting frame; 8. Connecting shaft; 9. C-axis motor of robotic arm; 10. First bolt; 11. Second bolt; 12. Reinforcing rib; 13. Stabilizing block; 14. Limiting ring; 15. Mounting plate; 16. Mounting through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 A robotic arm load reduction device includes a processing fixture 1. A connecting plate 2 is fixedly connected to the inner side wall of the processing fixture 1. Two first bolts 10 are threadedly connected to both sides of the processing fixture 1. The end of each first bolt 10 near the connecting plate 2 passes through the processing fixture 1 and extends into the interior of the connecting plate 2. The outer surface of each first bolt 10 is threadedly connected to the inner wall of the connecting plate 2. The first bolts 10 can increase the connection between the connecting plate 2 and the processing fixture 1, making the connecting plate 2 less prone to loosening.

[0023] A fixing plate 3 is fixedly connected to the upper surface of the connecting plate 2, and a mating seat 4 is fixedly connected to the upper surface of the fixing plate 3. Two second bolts 11 are threadedly connected inside the fixing plate 3. The bottom ends of the two second bolts 11 penetrate the fixing plate 3 and extend into the interior of the connecting plate 2. The outer surfaces of the two second bolts 11 are threadedly connected to the inner wall of the connecting plate 2. The second bolts 11 can improve the connection tightness between the fixing plate 3 and the connecting plate 2 and increase the load-bearing capacity of the fixing plate 3.

[0024] A snap-fit ​​seat 5 is fixedly connected to the inner upper surface of the docking seat 4. A reinforcing plate 6 is fixedly connected to the upper surface of the snap-fit ​​seat 5. Two reinforcing ribs 12 are fixedly connected to the bottom surface of the fixing plate 3. The back of the two reinforcing ribs 12 is fixedly connected to the front of the connecting plate 2. The reinforcing ribs 12 can increase the structural strength of the fixing plate 3, making the fixing plate 3 less prone to deformation when subjected to force.

[0025] A connecting frame 7 is fixedly connected to the upper surface of the reinforcing plate 6. A connecting shaft 8 is fixedly connected inside the connecting frame 7. Two stabilizing blocks 13 are fixedly connected to the front and back of the docking seat 4. The bottom surface of each stabilizing block 13 is fixedly connected to the upper surface of the fixing plate 3. The stabilizing blocks 13 can improve the stability of the docking seat 4 and make the connection between the docking seat 4 and the fixing plate 3 tighter and more reliable.

[0026] Two limiting rings 14 are fixedly connected to the outer surface of the connecting shaft 8. The two limiting rings 14 are fixedly connected to the front and back sides of the connecting frame 7 respectively on their side that are close to each other. The limiting rings 14 can limit the position of the connecting shaft 8 on the connecting frame 7 without affecting the rotation of the connecting shaft 8, and prevent the connecting shaft 8 from becoming loose from the connecting frame 7.

[0027] A robotic arm C-axis motor 9 is installed above the connecting frame 7. The output end of the robotic arm C-axis motor 9 is fixedly connected to one end of the connecting shaft 8. A mounting plate 15 is fixedly connected to the upper surface of the robotic arm C-axis motor 9. The upper surface of the mounting plate 15 has four mounting through holes 16. The mounting plate 15, together with the mounting through holes 16 and screws and other fasteners, can fix the robotic arm C-axis motor 9 in the required working position, ensuring the ease of installation of the robotic arm C-axis motor 9.

[0028] The working principle of this utility model is as follows: In use, firstly, the C-axis motor 9 of the robotic arm is connected to an external power supply and controller. Then, the C-axis motor 9 is fixed in the required working position by using the mounting plate 15 with the mounting through hole 16 and screws and other fixing parts. At this time, the C-axis motor 9 of the robotic arm can be moved from the top position of the processing fixture 1 to the middle position of the processing fixture 1 by using the connecting plate 2 with the fixing plate 3, the docking seat 4 and the snap-fit ​​seat 5. When the C-axis motor 9 of the robotic arm is in the middle position of the processing fixture 1, the C-axis motor 9 drives the processing fixture 1 to rotate 180 degrees through the connecting shaft 8, the connecting frame 7 and the reinforcing plate 6. This can effectively reduce the influence of the lever arm on the rotation of the C-axis motor 9 of the robotic arm, reduce the force intensity of the lever arm on the C-axis motor 9 of the robotic arm when the processing fixture 1 rotates, reduce the load on the C-axis motor 9 of the robotic arm, prevent the C-axis motor 9 of the robotic arm from overload alarm, achieve the effect of reducing the load on the robotic arm, and ensure the performance of the robotic arm.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A load-reducing device for a robotic arm, comprising a processing fixture (1), characterized in that: A connecting plate (2) is fixedly connected to the inner side wall of the processing fixture (1). A fixing plate (3) is fixedly connected to the upper surface of the connecting plate (2). A docking seat (4) is fixedly connected to the upper surface of the fixing plate (3). A snap-fit ​​seat (5) is fixedly connected to the inner upper surface of the docking seat (4). A reinforcing plate (6) is fixedly connected to the upper surface of the snap-fit ​​seat (5). A connecting frame (7) is fixedly connected to the upper surface of the reinforcing plate (6). A connecting shaft (8) is fixedly connected inside the connecting frame (7). A robotic arm C-axis motor (9) is arranged above the connecting frame (7). The output end of the robotic arm C-axis motor (9) is fixedly connected to one end of the connecting shaft (8).

2. The robotic arm load-reducing device according to claim 1, characterized in that: The processing fixture (1) has two first bolts (10) threadedly connected to both sides. The end of each first bolt (10) near the connecting plate (2) passes through the processing fixture (1) and extends into the interior of the connecting plate (2). The outer surface of each first bolt (10) is threadedly connected to the inner wall of the connecting plate (2).

3. The robotic arm load-reducing device according to claim 1, characterized in that: The fixing plate (3) has two second bolts (11) internally threaded. The bottom ends of the two second bolts (11) penetrate the fixing plate (3) and extend into the interior of the connecting plate (2). The outer surfaces of the two second bolts (11) are threaded to the inner wall of the connecting plate (2).

4. The robotic arm load-reducing device according to claim 1, characterized in that: The bottom surface of the fixing plate (3) is fixedly connected to two reinforcing ribs (12), and the back sides of the two reinforcing ribs (12) are fixedly connected to the front side of the connecting plate (2).

5. The robotic arm load-reducing device according to claim 1, characterized in that: The front and back of the docking seat (4) are fixedly connected to two stabilizing blocks (13), and the bottom surface of each stabilizing block (13) is fixedly connected to the upper surface of the fixing plate (3).

6. The robotic arm load-reducing device according to claim 1, characterized in that: Two limiting rings (14) are fixedly connected to the outer surface of the connecting shaft (8), and the two limiting rings (14) are fixedly connected to the front and back sides of the connecting frame (7) respectively on their sides that are close to each other.

7. The robotic arm load-reducing device according to claim 1, characterized in that: The upper surface of the C-axis motor (9) of the robotic arm is fixedly connected to a mounting plate (15), and the upper surface of the mounting plate (15) is provided with four mounting through holes (16).

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