Foldable parallel mechanism and application thereof

Abstract

The invention belongs to the technical field of aerospace, and particularly relates to a foldable parallel mechanism and application thereof. Existing machining equipment is long in period, low in production efficiency, poor in precision and incapable of meeting the machining technical requirement. The invention provides a foldable parallel mechanism which comprises a base, wherein the base is connected with one end of a shear fork type stretching branch chain, the other end of the shear fork type stretching branch chain is connected with a movable platform, and the shear fork type stretching branch chain is connected with a driving motor assembly; the shear fork type stretching branch chain comprises a branch chain driving assembly, the branch chain driving assembly is connected with one end of a main connecting rod, the main connecting rod is connected with one end of a main supporting rod, the other end of the main supporting rod is connected with the base, the branch chain driving assembly is connected with the base, and the other end of the main connecting rod is connected with one end of a shear fork branch structure; one end of the shear fork branch structure is connected with the main supporting rod, and the other end of the shear fork branch structure is connected with the movable platform. And different stretching rigidity requirements can be met.

Description

technical field [0001] The application belongs to the field of aerospace technology, and in particular relates to a foldable parallel mechanism and its application. Background technique [0002] For the processing of complex spherical crown surfaces of large storage tanks in the aerospace field, due to the very large structural size of the storage tanks and the horizontal layout of the overall processing, the processing equipment is required to have a large expansion space. When the large storage tank workpiece is placed horizontally, the size of the spherical crown surface of the workpiece is super large, and the processing direction is along the axis of the workpiece, so the processing equipment needs to have a large stretching distance along the axis of the workpiece, and at the same time, it can meet the rigidity requirements and avoid excessive stretching lead to deformation of the structure. The traditional five-axis linkage CNC machine tool can process complex curved...

AI Technical Summary

Problems solved by technology

[0005] Due to the limited working space of existing processing equipment, it is difficult to achieve high rigidity and large extension, so it is impossible to complete the processing of the spherical crown surface of large storage tanks. At present, the processing of spherical crown surfaces of large storage tanks is mainly carried out manually. Long, low production efficiency, and poor precision, can not guarantee the technical requirements of processing, the application provides a foldable parallel mechanism and its application

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