Line feeding positioning system and line feeding positioning method for three big assemblies of lower vehicle body

Abstract

The invention relates to a line feeding positioning system for three big assemblies of a lower vehicle body and a line feeding positioning method. The line feeding positioning system comprises a movable lower vehicle body splicing platform, a front vehicle body precise material frame used for positioning a front vehicle body and two sliding centering platforms which are used for positioning a front floor and a rear lower vehicle body. After the front floor and the rear lower vehicle body are positioned through the sliding centering platforms, carrying robots feed the parts to the movable lowervehicle body splicing platform. The front vehicle body adopts the precise material frame, a track is fixed and centered, and a carrying robot feeds the parts; after the three big assemblies are fed,a big assembly positioning clamp on the movable lower vehicle body splicing platform carries out positioning, and a point welding robot carries out welding positioning; and after welding is completed,a seven-axis robot carries the top cover to the next station. The line feeding positioning system has the beneficial effects that possibility of whole vehicle type flexibility is achieved, and the system structure reliability is high.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, and in particular relates to an on-line positioning system and an on-line positioning method for three major assemblies of an undercar body. Background technique [0002] The on-line positioning method and flexible switching device of the large assembly of the domestic main engine factory usually adopt the three major assemblies of the front car body, the front floor and the rear lower car body of the product conveyor chain, the precise material delivery lower body, and the upper part is grabbed by the robot, and the NC The positioning tool positioning method realizes the on-line positioning and flexible switching of the three major assemblies of the lower body, but the system is too complicated, the investment cost is high, and it is only suitable for the flexibility of vehicles on the same platform. [0003] The current existing technology has the following problems: it is only suitable ...

AI Technical Summary

Problems solved by technology

[0002] The on-line positioning method and flexible switching device of the large assembly of the domestic main engine factory usually adopt the three major assemblies of the front car body, the front floor and the rear lower car body of the product conveyor chain, the precise material delivery lower body, and the upper part is grabbed by the robot, and the NC The method of positioning tool positioning realizes the on-line positioning and flexible switching of the three major assemblies of the lower body, but the system is too complicated, the investment cost is high, and it is only suitable for vehicles on the same platform.

[0003] The current existing technology has the following problems: it is only suitable for conveying the upper parts of the three major assemblies of the vehicle body under the same platform, and it is difficult to modify the tooling of the fixed platform, and it is impossible to realize the flexible production of multiple models on different platforms

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