High-precision worm of mechanical arm

Abstract

The utility model relates to the related field of precision part machining, in particular to a mechanical arm high-precision worm which comprises a shell, a bearing seat, a turbine, a worm body, a cover plate and a tightening cap, the bearing seat is arranged on the inner side of the shell, the turbine is arranged on the inner side of the bearing seat, the worm body is arranged on one side of the turbine, one end of the worm body penetrates through the shell to be connected with the outside, and the other end of the worm body penetrates through the cover plate. The other end of the worm is provided with a tightening cap, the tightening cap is connected with the shell through a fastening screw, and a cover plate is arranged above the shell. The transmission precision of the high-precision worm of the mechanical arm can be freely adjusted by adjusting the transmission ratio of the worm to the turbine. The whole worm is simple in structure, easy to dissipate heat and convenient to disassemble and assemble, and the transmission ratio of the worm and the turbine is convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the field related to precision parts processing, in particular to a high-precision worm of a mechanical arm. Background Art

[0002] High-precision worm gears for robotic arms play a vital role in various applications, including but not limited to industrial manufacturing, scientific research experiments, medical surgery, etc. In order to meet the requirements of these applications for high precision, high efficiency, and high reliability, the requirements for worm gear accuracy are also increased accordingly.

[0003] In the robotic arm, the worm is an important transmission element, and its accuracy directly affects the movement accuracy and stability of the robotic arm. Therefore, there are very high requirements for the manufacturing and installation accuracy of the worm. First of all, the material of the worm needs to have good mechanical properties and wear resistance to ensure that it can maintain stable transmission performance in long-term use. Secondly, in the manufacturing process of the worm, advanced processing technology and equipment need to be used to ensure the dimensional accuracy and surface quality of the worm. In addition, during the installation process, the position and posture of the worm need to be strictly controlled to ensure its matching accuracy with other transmission elements.

[0004] In addition to manufacturing and installation accuracy, the design of the worm is also a key factor affecting its accuracy. In the design process of the worm, it is necessary to fully consider the selection of parameters such as its transmission ratio, center distance, modulus, etc. to ensure the stability and accuracy of the worm transmission. At the same time, it is also necessary to consider the lubrication and heat dissipation of the worm to avoid deformation and wear caused by friction heat. Utility Model Content

[0005] The purpose of this utility model is to design a worm with high precision and easy heat dissipation. To achieve the above purpose, this utility model adopts the following technical solutions:

[0006] A high-precision worm for a robotic arm comprises a housing, a bearing seat, a turbine, a worm, a cover plate, and a tightening cap. A bearing seat is provided on the inner side of the housing, a turbine is provided on the inner side of the bearing seat, a worm is provided on one side of the turbine, one end of the worm passes through the housing and is connected to the outside, the housing and the worm are connected via a worm bearing seat, a tightening cap is provided on the other end of the worm, the tightening cap is connected to the housing via a fastening screw, and a cover plate is provided above the housing.

[0007] Furthermore, the turbine includes a worm connecting portion, a bearing connecting portion, and a threaded portion. The worm is threadedly connected to the worm connecting portion of the turbine. A bearing connecting portion is provided below the worm connecting portion, and a threaded portion is provided below the bearing connecting portion.

[0008] Furthermore, a threaded sleeve is sleeved on the outer side of the threaded portion of the turbine.

[0009] Furthermore, a bearing is provided between the bearing seat and the turbine, and the bearing is in contact with the bearing connecting portion.

[0010] Furthermore, the bearing seat is connected to the housing via screws.

[0011] The positive and progressive effects of the utility model are:

[0012] (1) By adjusting the transmission ratio of the worm and the turbine, the transmission accuracy of the high-precision worm of the robotic arm can be freely adjusted.

[0013] (2) The overall worm gear has a simple structure, is easy to dissipate heat, is convenient to disassemble and assemble, and is convenient for adjusting the transmission ratio of the worm gear and turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the high-precision worm of the robotic arm of the utility model.

[0015] Figure 2 It is a partial cross-sectional view of the high-precision worm of the robotic arm of the utility model.

[0016] Explanation of the accompanying drawings: housing 1, bearing seat 2, turbine 3, worm 4, tightening cap 5, cover plate 6, fastening screw 7, worm connecting part 8, bearing connecting part 9, threaded part 10, threaded sleeve 11, bearing 12, screw 13, worm bearing seat 14. DETAILED DESCRIPTION

[0017] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0018] like Figure 1-2 As shown, a high-precision worm gear for a mechanical arm includes a housing 1, a bearing seat 2, a turbine 3, a worm gear 4, a cover plate 6, and a tightening cap 5;

[0019] A bearing seat 2 is provided on the inner side of the housing 1 , and the bearing seat 2 is connected to the housing 1 via screws 13 .

[0020] A turbine 3 is provided on the inner side of the bearing seat 2, and the turbine 3 includes a worm connecting portion 8, a bearing connecting portion 9, and a threaded portion 10;

[0021] A worm 4 is provided on one side of the turbine 3 , and the worm 4 is threadedly connected to a worm connecting portion 8 of the turbine 3 .

[0022] A bearing connection portion 9 is provided below the worm connection portion 8 . A bearing 12 is provided between the bearing seat 2 and the turbine 3 . The bearing 12 abuts against the bearing connection portion 9 .

[0023] A threaded portion 10 is provided below the bearing connection portion 9. A threaded sleeve 11 is sleeved outside the threaded portion 10 of the turbine 3. The threaded sleeve 11 limits the turbine 3 on the bearing seat 2.

[0024] One end of the worm 4 passes through the housing 1 and is connected to the outside. The housing 1 and the worm 4 are connected via a worm bearing seat 14. The other end of the worm 4 is provided with a tightening cap 5, and the tightening cap 5 is connected to the housing 1 via a tightening screw 7. A bearing is provided between the worm bearing seat 14 and the worm 4, and the worm 4 can rotate freely in the tightening cap 5 and the worm bearing seat 14.

[0025] A cover plate 6 is provided above the housing 1, and one end of the turbine 3 passes through the cover plate 6 and is connected to the outside. The cover plate 6 is connected to the housing 1 by an outer cover screw.

[0026] When disassembling and adjusting the worm 4 and turbine 3, open the outer cover screws of the cover plate 6, loosen the fastening screws 7 of the tight cap 5 and the fixing screws of the worm bearing seat 14, replace the worm 4, unscrew the threaded sleeve 11, replace the turbine 3, and then adjust the worm 4 to make it perfectly match the turbine 3, tighten the fastening screws 7 of the tight cap 5, and the adjustment is completed. The overall worm structure is simple, easy to dissipate heat, easy to disassemble and assemble, and convenient for adjusting the transmission ratio of the worm and turbine.

[0027] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A high-precision worm gear for a robotic arm, characterized in that: It includes a shell, a bearing seat, a turbine, a worm, a tightening cap and a cover plate. The inner side of the shell is provided with a bearing seat, the inner side of the bearing seat is provided with a turbine, one side of the turbine is provided with a worm, one end of the worm passes through the shell and is connected to the outside, the shell and the worm are connected through a worm bearing seat, the other end of the worm is provided with a tightening cap, the tightening cap is connected to the shell through a fastening screw, and a cover plate is provided above the shell.

2. A high-precision worm for a robotic arm as claimed in claim 1, characterized in that: The turbine comprises a worm connecting part, a bearing connecting part and a threaded part. The worm is threadedly connected to the worm connecting part of the turbine. A bearing connecting part is provided below the worm connecting part, and a threaded part is provided below the bearing connecting part.

3. A high-precision worm gear for a robotic arm as claimed in claim 2, characterized in that: A threaded sleeve is sleeved on the outer side of the threaded part of the turbine.

4. A high-precision worm gear for a robotic arm as claimed in claim 2, characterized in that: A bearing is provided between the bearing seat and the turbine, and the bearing is in contact with the bearing connection portion.

5. A high-precision worm for a robotic arm as claimed in claim 1, characterized in that: The bearing seat is connected to the housing through screws.

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