A high-strength precision rotary mechanism

Abstract

The invention provides a high-strength precision slewing mechanism. A slewing shaft is a stepped shaft and is arranged in a stepped hole in a supporting base in a matched manner. The supporting base is used for bearing axial and radial loads transmitted by the slewing shaft. After the first side of the slewing shaft penetrates the stepped hole of the supporting base, one synchronous pulley is installed on the first side of the slewing shaft. The other synchronous pulley is installed on an output shaft of a servo motor. A synchronous belt is arranged in grooves of the two synchronous pulleys. Driving force provided by the servo motor drives the slewing shaft to slew after torque transmission is conducted by the synchronous pulleys and the synchronous belt. The designed slewing shaft is matched with thrust bearings, so that the effect of axially bearing the large loads is achieved; and a pair of deep groove ball bearings is matched with the slewing shaft, control over radial precision is achieved, and radial runout is reduced. The high-strength precision slewing mechanism is simple in structure and convenient to operate; and high-precision slewing motion can be achieved.

Description

technical field [0001] The invention discloses a high-strength precision rotary mechanism. Background technique [0002] The following rotary mechanisms are disclosed in the prior art: [0003] For example, a rotary tooling device is introduced in the patent CN101391656A, but what is described in this patent is an aircraft component assembly tooling with a rotary function, but its use is not aimed at high-strength load conditions, nor is it suitable for high-speed rotary positioning. [0004] In the literature "Chen Hongjing, Chen Jin, Li Su, Research on Hydraulic Swing Mechanism of Tower Crane, "Building Mechanization", Issue 02, 2010", a new type of hydraulic slewing mechanism of tower crane was designed. This kind of slewing mechanism has been widely used. It is used in engineering machinery, such as the hydraulic rotary mechanism on the crane. However, this type of mechanism does not have the function of precision indexing, and it is not suitable as an indexing rotary t...

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Problems solved by technology

[0003] For example, a rotary tooling device is introduced in the patent CN101391656A, but what is described in this patent is an aircraft component assembly tooling with a rotary function, but its use is not aimed at high-strength load conditions, nor is it suitable for high-speed rotary positioning

[0004] In the literature "Chen Hongjing, Chen Jin, Li Su, Research on Hydraulic Swing Mechanism of Tower Crane, "Building Mechanization", Issue 02, 2010", a new type of hydraulic slewing mechanism of tower crane was designed. This kind of slewing mechanism has been widely used. It is used in construction machinery, such as the hydraulic rotary mechanism on the crane, but this kind of mechanism does not have the function of precision indexing, and it is not suitable as an indexing rotary table

[0005] In the literature "Liu Jia, Yang Yuhu, A new type of indexing mechanism with one indexing cam-linkage, "Mechanical Design", Issue 10, 2013", this type of mechanism has the characteristics of realizing intermittent motion with an indexing number of 1, but this type of mechanism It cannot realize the functions of indexing and positioning at any angle, and it is not suitable for heavy load working conditions.

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