Rotating shaft fixing structure and mechanical arm

Abstract

The utility model discloses a fixed device field's a rotating shaft fixed structure and mechanical arm, including setting on component one's oblique hole no.

Description

Technical Field

[0001] This utility model relates to the field of fixed structures, and in particular to a rotating shaft fixed structure machine and robotic arm. Background Technology

[0002] When a robot is working, it will operate at high speed and over a wide range of speeds depending on the usage requirements. At the same time, the overall rigidity of the robot arm will also affect the robot's performance. These requirements necessitate that each rotating axis of the robot be fixed and installed with a very safe and robust structure to ensure the robot's secure fastening under high speed and heavy load conditions.

[0003] Currently, the mainstream rotating shaft mounting structures on the market are axial end face mounting and radial mounting. The former can ensure a high contact area and fastening strength, but it has disadvantages such as complex installation and fastening, small bolt fastening space, and the need for special installation tools. The latter, although it has a larger installation and fastening space and better adaptability to tools, has problems such as small contact area and easy loosening of axial positioning. Utility Model Content

[0004] The purpose of this utility model is to provide a rotating shaft fixing structure and a robotic arm. By using obliquely installed fastening bolts, both axial fixing and radial fixing between the arm shell and the adapter flange can be achieved, resulting in a simple structure.

[0005] To solve the above technical problems, the following technical solution is adopted: In a first aspect, this utility model provides a rotating shaft fixing structure, including a first oblique hole on a first component and a second oblique hole on a second component. The first oblique hole is a through hole, and the first oblique hole and the second oblique hole are aligned. The first oblique hole extends from the side of the first component to its end face, and the second oblique hole is located between the end face and the side of the second component. The end face of the first component and the end face of the second component are in contact and engaged. The first component and the second component are fixed axially and radially by a fixing member that engages with the first oblique hole and the second oblique hole.

[0006] Optionally, the fastener includes a fastening bolt.

[0007] Optionally, the oblique hole two is provided with a thread that mates with the fastening bolt, and the fastening bolt mates with the thread of the oblique hole two.

[0008] Optionally, the oblique hole includes a first hole and a second hole, wherein the inner diameter of the first hole is the same as the outer diameter of the head of the fastening bolt, and the inner diameter of the second hole is the same as the outer diameter of the threaded portion of the fastening bolt.

[0009] Optionally, several of the fasteners are evenly arranged in the circumferential direction within component one and component two.

[0010] Optionally, the fastener is installed at an angle of 45°.

[0011] Optionally, the angle between the first oblique hole and the axis of the first component is 45°, and the angle between the second oblique hole and the axis of the second component is 45°.

[0012] Secondly, this utility model provides a robotic arm, including the rotating shaft fixing structure described in the first aspect, wherein the first component is an arm shell or a joint module, and the second component is a transition flange.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The rotating shaft fixing structure provided by this utility model connects component one and component two by opening oblique holes one and two respectively in component one and component two, and then installing fixing parts in oblique holes one and two. The oblique holes one and two are obliquely arranged in component one and component two, realizing axial and radial fixing between component one and component two. The structure of this utility model is simple. The oblique hole one passes through the side of component one, which provides a large side operating space and makes operation simple. The end faces of component one and component two are in complete contact and fit, eliminating the need to leave a fixing part installation position, effectively increasing the contact area and ensuring the reliability of the fixed installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the fixing structure in Embodiment 2 of this utility model; Figure 2 This is an enlarged structural schematic diagram of the fastening bolt installation in Embodiment 2 of this utility model; Figure 3 This is a schematic diagram of the robotic arm structure in Embodiment 3 of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Fastening bolts; 2. Arm shell; 21. Angled hole one; 3. Adapter flange; 31. Angled hole two; 4. Joint module. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example 1

[0019] like Figure 1 , Figure 2 As shown, this embodiment provides a rotating shaft fixing structure, including a first oblique hole 21 disposed on a first component and a second oblique hole 31 disposed on a second component. The first oblique hole 21 is a through hole extending from the side of the first component to its end face. The second oblique hole 31 extends from the end face of the second component to its interior and is located between the end face and the side of the second component. After the end face of the first component and the end face of the second component are engaged, the first oblique hole 21 and the second oblique hole 31 are aligned. The first component and the second component are fixed axially and radially by fasteners that engage with the first oblique hole 21 and the second oblique hole 31.

[0020] This embodiment achieves axial and radial fixation of components one and two by opening oblique holes 21 and 31 on components one and two respectively, and installing fasteners in oblique holes 21 and 31. The structure is simple. When installing the fasteners, they enter oblique holes 21 from the side of component one and then extend from the end face of component one into oblique holes 31 of component two. The side of component one has a large operating space, making the installation simple. The end faces of component one and component two are in complete contact and fit, eliminating the need for a fastener installation position, effectively increasing the contact area and ensuring the reliability of the fixed installation.

[0021] Example 2

[0022] This embodiment provides a rotating shaft fixing structure based on Embodiment 1. This embodiment uses the arm shell 2 of the robotic arm as component one and the adapter flange 3 as component two for detailed description.

[0023] like Figure 1 , Figure 2 As shown, oblique hole 1 21 opens from the side wall of the arm housing 2 and extends through to the end face of the arm housing 2. Oblique hole 2 31 extends from the end face of the adapter flange 3 into the interior. The angle between oblique hole 1 21 and the axis of the arm housing 2 is 45°. Oblique hole 2 31 is located between the end face and the side of the adapter flange 3, and the angle between it and the axis of the adapter flange 3 is also 45°. After the end face of the arm housing 2 and the end face of the adapter flange 3 are in contact, the outlet of oblique hole 1 21 on the end face of the arm housing 2 and the opening of oblique hole 2 31 on the end face of the adapter flange 3 are aligned. A thread for fastening bolt 1 is also provided in oblique hole 2 31. Fastening bolt 1 extends from oblique hole 1 21 on the side of the arm housing 2 into oblique hole 2 31 and is threaded into oblique hole 2 31. The oblique installation angle of fastening bolt 1 is also 45°. The oblique hole 21 is divided into two sections with different inner diameters: the first hole and the second hole. The first hole has the same outer diameter as the head of the fastening bolt 1, and the second hole has the same outer diameter as the screw part of the fastening bolt 1. The end of the first hole and the beginning of the second hole are platform structures, and the lower surface of the head of the fastening bolt 1 contacts and fits with the platform.

[0024] A plurality of fastening bolts 1 are evenly arranged on the arm housing 2. The angle between the fastening bolts 1 and the axis of the adapter flange 3 is the same. In this embodiment, the angle between the fastening bolts 1 and the axis of the adapter flange 3 is 45°. The axial and radial fixation between the adapter flange 3 and the arm housing 2 is achieved by the fastening bolts 1.

[0025] During installation, the arm housing 2 contacts and mates with the end face of the adapter flange 3. The oblique hole 21 on the arm housing 2 and the oblique hole 31 on the adapter flange 3 are aligned. Then, the fastening bolt 1 is installed into the oblique hole 21, and then the fastening bolt 1 is tightened with a screwdriver to complete the installation. After the fastening bolt 1 is tightened, due to its oblique installation structure, there are both axial and radial tightening forces. The axial force can ensure that the large axial contact area is completely pressed and tightened, and the radial force can enhance the fit between the adapter flange 3 and the arm housing 2. At the same time, based on the above scheme, the space for tightening the fastening bolt 1 outside (the side of the arm housing 2) is completely exposed, and the tightening operation can be carried out with ordinary tools.

[0026] Example 3

[0027] like Figure 3As shown, this embodiment provides a robotic arm based on Embodiment 2, including an arm housing 2, an adapter flange 3, and a joint module 4. The arm housing 2 can be installed in the following order: joint module 4, adapter flange 3, and arm housing 2. The arm housing 2 can rotate in one direction via a joint module 4. The arm housing 2 and the adapter flange 3 are connected using the fixed structure described in Embodiment 2.

[0028] Alternatively, the components can be installed in the following order: joint module 4, adapter flange 3, joint module 4, adapter flange 3, and arm housing 2. The arm housing 2 can rotate in two different directions through the two joint modules 4. The first adapter flange 3 is connected to the second joint module 4, and the second adapter flange 3 is connected to the arm housing 2 using the fixed structure described in Embodiment 2.

[0029] The robotic arm is installed using the fixing structure shown in Example 2. A set of fastening bolts achieves axial and radial fixation between the two, resulting in a simple structure and convenient installation.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rotating shaft fixing structure, characterized in that, The device includes a first oblique hole on component one and a second oblique hole on component two. The first oblique hole is a through hole, and the first oblique hole is aligned with the second oblique hole. The first oblique hole extends from the side of component one to its end face, and the second oblique hole is located between the end face and the side of component two. The end face of component one and the end face of component two are in contact and engaged. Component one and component two are fixed axially and radially by fasteners that engage with the first oblique hole and the second oblique hole.

2. The rotating shaft fixing structure according to claim 1, characterized in that, The fasteners include fastening bolts.

3. The rotating shaft fixing structure according to claim 2, characterized in that, The oblique hole two is provided with a thread that mates with the fastening bolt, and the fastening bolt mates with the thread of the oblique hole two.

4. The rotating shaft fixing structure according to claim 2, characterized in that, The oblique hole includes a first hole and a second hole. The inner diameter of the first hole is the same as the outer diameter of the head of the fastening bolt, and the inner diameter of the second hole is the same as the outer diameter of the threaded portion of the fastening bolt.

5. The rotating shaft fixing structure according to claim 1, characterized in that, Several of the aforementioned fasteners are evenly arranged in the circumferential direction within component one and component two.

6. The rotating shaft fixing structure according to claim 1, characterized in that, The fastener is installed at an angle of 45°.

7. The rotating shaft fixing structure according to claim 6, characterized in that, The angle between the first oblique hole and the axis of the first component is 45°, and the angle between the second oblique hole and the axis of the second component is 45°.

8. A robotic arm, characterized in that, The rotating shaft fixing structure includes any one of claims 1-7, wherein the first component is an arm shell or a joint module, and the second component is an adapter flange.

Images