Flexible locating cramping apparatus controlled by servo

Abstract

The invention relates to a flexible positioning fixture controlled by a servo. The whole fixture, from the bottom to the top, comprises a first horizontal direction moving servo control mechanism, a first rotation direction servo control mechanism, a vertical direction movement servo control mechanism, a second horizontal direction moving servo control mechanism, a second rotation direction servo control mechanism, a third rotation direction servo control mechanism and a positioning pin mechanism. The positioning pin mechanism is an actuating mechanism of the entire mechanism and plays a positioning role on the assembly of workpieces. The position precision of the positioning pin mechanism is achieved by the servo control mechanisms in the moving directions and rotating directions. The positioning fixture realizes multiple-degree-of-freedom adjustment, meets the characteristic requirement of the flexible fixture produced by a variety of similar vehicle models, has the capability of quickly, accurately and automatically adjusting the three-dimensional position and posture of the positioning pin according to the variation of the positioning positions of different products, and realizes the space positioning of different positioning modes.

Description

technical field [0001] The invention relates to a fixture in the technical field of mechanical engineering, in particular to a servo-controlled flexible positioning fixture suitable for various types of modern car body parts or assemblies. Background technique [0002] With the diversification of automotive products, mixed-line production, rapid production and continuous improvement of quality requirements, the body manufacturing and assembly process is increasingly demanding flexibility, high efficiency and high precision. In the automobile body welding and assembly production line, it is an urgent requirement for automobile companies to develop flexible assembly fixtures suitable for various models to achieve mixed production of various similar models, which can save production space and reduce investment for automobile companies. At present, in terms of flexible fixture research, combined fixture is a mature technology and has been widely used in machine tools, automobile...

AI Technical Summary

Problems solved by technology

However, each assembly of the combined fixture is time-consuming, and it is completed by manual operation. It is suitable for the use of off-line inspection and measurement brackets for automobile bodies, but it cannot meet the requirements of mixed production of various models on the welding production line.

[0004] The mixed-line production of various models is the current development trend of automobiles. On the production line of mixed-line production, the fixture system is required to be able to quickly adjust according to the positioning requirements of the product during product conversion, but the current flexible fixture design cannot meet this requirement.

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