Lightweight big arm structure of industrial robot

Abstract

The utility model relates to the technical field of industrial robots, in particular to a light-weight big arm structure of an industrial robot, a big arm comprises a shell, two ends of the shell are provided with interfaces, the interfaces are used for connecting or fixing the big arm and a robot part, one side of the shell is provided with a groove body, and the groove body is provided with an opening. The groove body is formed by extending from the side of the shell to the other side opposite to the side of the shell; a plurality of V-shaped reinforcing ribs and vertical reinforcing ribs are arranged in the groove body; and a hollow hole penetrating through the shell is formed in the other side of the shell. According to the structure, the front face of the big arm is removed, the width of the top face and the width of the bottom face of the frame-shaped structure are reduced, meanwhile, the composite structure of the V-shaped reinforcing ribs and the vertical reinforcing ribs is additionally arranged in the frame-shaped structure, the weight of the big arm is obviously reduced, and the structural stability and the mechanical property of the big arm are enhanced by optimizing stress distribution. In addition, the hollow hole design of the large arm further reduces the structural mass and reduces the rotational inertia.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial robots, and specifically to a lightweight large arm structure of an industrial robot. Background Art

[0002] With the development of manufacturing industry, industrial robots are increasingly used in automated production lines. As the main mechanical structure component, the design of the robot's arm directly affects the robot's key performance indicators such as operating speed, accuracy and energy consumption. Traditional industrial robot arms usually adopt a frame structure with a certain wall thickness (see Figure 1 ), although this structure has sufficient strength and rigidity, its heavy mass limits the dynamic response capability and operation speed of the robot.

[0003] To solve this problem, the industry has tried to reduce weight by hollowing out the sides of the frame structure with long waists or round holes. In addition, there are also deep groove structures with vertical reinforcement ribs to enhance the mechanical properties of the upper arm. However, although these methods have achieved weight reduction to a certain extent, they are not ideal in significantly improving the response frequency and reducing dynamic stress. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model mainly aims at the above problems and proposes a lightweight big arm structure of an industrial robot, aiming to significantly reduce the weight of the big arm and improve the dynamic response speed and operation accuracy of the robot without sacrificing strength and rigidity.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides a lightweight boom structure of an industrial robot, wherein the boom includes a shell, and interfaces are provided at both ends of the shell, and the interfaces are used to connect or fix the boom to robot components. One side of the shell has a groove body, and the groove body extends along the side of the shell toward the other side opposite to the side; a plurality of V-shaped reinforcement ribs and vertical reinforcement ribs are provided in the groove body; and a hollow hole penetrating the shell is opened on the other side of the shell.

[0008] Furthermore, the hollow hole is arranged in the area between the V-shaped reinforcement rib and the vertical reinforcement rib.

[0009] Furthermore, the hollow hole is a circular hole.

[0010] Furthermore, the bottom of each V-shaped reinforcing rib is connected to the inner wall of the trough body, and both ends extend upward and connect to the top of the trough body or the inner wall close to the top, and multiple V-shaped reinforcing ribs are staggered along the length direction of the shell.

[0011] Furthermore, the vertical reinforcing ribs extend straight up from the bottom of the trough body to the top and intersect with the V-shaped reinforcing ribs, and a plurality of the vertical reinforcing ribs are arranged in parallel.

[0012] Furthermore, the shell is in an oblong shape.

[0013] Furthermore, a mounting hole is provided on the interface.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a lightweight boom structure for an industrial robot, which adopts a frame structure that removes the front of the boom and narrows the width on the top and bottom surfaces, and adds a composite structure of V-shaped reinforcement ribs and vertical reinforcement ribs inside, which not only significantly reduces the weight of the boom, but also enhances the structural stability and mechanical properties of the boom by optimizing stress distribution. In addition, the hollow hole design of the boom further reduces the structural mass and the moment of inertia, thereby improving the response speed and operating accuracy, and effectively improving the dynamic performance of the robot in high-speed operation and the reliability of long-term use. This design ensures the high strength and high rigidity of the robot's boom while achieving lightweight, meeting the high standards of robot performance in modern industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the boom structure that is not designed to be lightweight in the prior art.

[0017] Figure 2 This is a three-dimensional structural schematic diagram of a lightweight large arm structure of an industrial robot disclosed in this application installed on the robot.

[0018] Figure 3 This is a schematic structural diagram of the lightweight arm structure of an industrial robot disclosed in this application at the A surface.

[0019] Figure 4 This is a schematic structural diagram of a lightweight upper arm structure of an industrial robot disclosed in this application at the C-plane.

[0020] Reference numerals shown in the figures:

[0021] 1. Shell; 2. Interface; 3. Trough; 4. V-shaped reinforcement ribs; 5. Vertical reinforcement ribs; 6. Hollow holes; 7. Mounting holes; 100. Upper arm. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figure 2-Figure 4 FIG. 1 is a schematic diagram of a lightweight arm structure of an industrial robot provided by a preferred embodiment of the present application. In the lightweight arm structure of the industrial robot, the arm 100 is mainly composed of a shell 1, and both ends of the shell 1 are provided with interfaces 2 for mounting the arm 100 to other components of the robot so that the robot can achieve multi-degree-of-freedom rotation (see FIG. 1 ). Figure 2 ). One side of the housing 1 is specially designed with a slot body 3, which extends from one side to the opposite side to form a deep slot structure. In this embodiment, for ease of understanding, as shown in FIG. Figure 1 , Figure 3 and Figure 4 As shown, the shell 1 is divided into surface A, surface B, surface C and surface D, wherein surface A (front surface) is removed, the widths of surface B (top surface) and surface D (bottom surface) are narrowed, and surface A forms a shallow groove 3; the narrowing of the widths of surface B (top surface) and surface D (bottom surface) is used to reduce structural mass redundancy, reduce the moment of inertia, and increase the response speed.

[0026] A plurality of V-shaped reinforcement ribs 4 and vertical reinforcement ribs 5 are arranged inside the trough 3. These reinforcement ribs are combined to form a comprehensive reinforcement structure, which is intended to improve the overall mechanical stability and durability. In particular, the V-shaped reinforcement ribs 4 help to disperse the stress distribution, evenly distribute the load, reduce the stress concentration that may occur during repeated movements, and are conducive to improving the cyclic stress fatigue strength of the boom 100.

[0027] In addition, the C-side (back side) of the upper arm 100 is designed with hollow holes 6, which further reduce the weight of the upper arm 100 and help improve the response speed and dynamic performance of the structure. These hollow parts not only help reduce the use of materials, but also optimize the moment of inertia of the upper arm 100, allowing the robot to respond to operating instructions more quickly.

[0028] In this embodiment, the hollow hole 6 is arranged in the area between the V-shaped reinforcing rib 4 and the vertical reinforcing rib 5; and the hollow hole 6 is a circular hole, of course, this embodiment is not limited to this, and can also be an elliptical hole, a square hole or a polygonal hole.

[0029] In terms of layout, the bottom of each V-shaped reinforcing rib 4 is connected to the inner side wall of the trough body 3, and the two ends extend upward and connect to the top of the trough body 3 or the inner side wall near the top. Multiple V-shaped reinforcing ribs 4 are arranged in a staggered manner along the length direction of the shell 1. It can be understood that in the length direction, the connected V-shaped reinforcing ribs 4 are connected from one end to the other end in the length direction, and the bending and torsion resistance of the entire arm 100 is enhanced through its unique layout. The design of the V-shaped reinforcing ribs 4 helps to disperse the force generated by the movement of the robot, thereby improving the durability and stability of the overall structure.

[0030] from Figure 4 As can be seen in the figure, the vertical reinforcement ribs 5 extend directly from the bottom to the top of the trough body 3, and multiple vertical reinforcement ribs 5 are arranged in parallel and intersect with the V-shaped reinforcement ribs 4 to form a grid-like structural frame. The overall rigidity of the boom 100 is further enhanced, especially when resisting forces perpendicular to the length direction of the boom 100.

[0031] In the lightweight arm structure of the industrial robot, the mounting hole 7 provided on the interface is used to connect the arm 100 to other components of the robot. The mounting hole 7 can firmly attach the arm 100 to the main body or other operating components of the robot by using bolts, screws or other fasteners. The interface with the mounting hole 7 makes the installation and removal process of the arm 100 simple and supports quick replacement or maintenance.

[0032] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present application is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim can also be implemented by the same unit or device through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

[0033] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A lightweight arm structure of an industrial robot, the arm comprising a shell, both ends of the shell are provided with interfaces, the interfaces are used to connect or fix the arm to the robot component, characterized in that: One side of the shell has a groove body, which extends along the side of the shell toward the other side opposite to the side; a plurality of V-shaped reinforcing ribs and vertical reinforcing ribs are arranged in the groove body; and a hollow hole penetrating the shell is opened on the other side of the shell.

2. The lightweight arm structure of an industrial robot according to claim 1, characterized in that: The hollow hole is arranged in the area between the V-shaped reinforcement rib and the vertical reinforcement rib.

3. The lightweight arm structure of an industrial robot according to claim 2, characterized in that: The hollow hole is a circular hole.

4. The lightweight arm structure of an industrial robot according to claim 1, characterized in that: The bottom of each V-shaped reinforcing rib is connected to the inner wall of the trough body, and both ends extend upward and connect to the top of the trough body or the inner wall close to the top. Multiple V-shaped reinforcing ribs are staggered along the length direction of the shell.

5. The lightweight arm structure of an industrial robot according to claim 4, characterized in that: The vertical reinforcing ribs extend straight up from the bottom of the trough body to the top and intersect with the V-shaped reinforcing ribs, and a plurality of the vertical reinforcing ribs are arranged in parallel.

6. The lightweight arm structure of an industrial robot according to claim 1, characterized in that: The shell is in an oblong shape.

7. The lightweight arm structure of an industrial robot according to claim 1, characterized in that: The interface is provided with a mounting hole.

Images