Robot spraying and track setting method for cabochon curved surface transition area between smooth curved surfaces

Abstract

The invention discloses a robot spraying and track setting method for a cabochon curved surface transition area between smooth curved surfaces. The method includes the steps: building plane spraying coating thickness accumulation mathematic models corresponding to specific spraying devices by the aid of theoretical analysis and experiment data analysis; performing treatment for curved surfaces needing to be sprayed by the aid of a CATIA (computer-graphics aided three-dimensional interactive application); analyzing out a symmetric center curve and two boundary curves of a cabochon curved surface according to curvature change; taking the center curve and the two boundary curves to serve as a robot running track reference line. Robot spraying track plan and spraying parameter setting of the later cabochon curved surface transition area depends on the three curves by the aid of the built coating thickness accumulation mathematic models on the freeform curved surface. According to the robot spraying and track setting method, analysis accuracy is improved, and previous spraying track plan time is shortened. By the aid of a plane experiment, the built coating thickness accumulation mathematic models on the freeform curved surface and ROBCAD spraying simulation functions, parameter setting accuracy is improved, and engineering debugging time is shortened.

Description

technical field [0001] The invention relates to a method for automatically optimizing the track of a spray gun of a spraying robot, which is an off-line programming method for a robot when performing a spraying operation on a workpiece whose surface is a smooth arcuate curved surface. Background technique [0002] The spraying effect of the spraying robot is related to many factors such as the surface shape of the workpiece, the trajectory of the spray gun, and the parameters of the spray gun. For products such as automobiles, electrical appliances and furniture, the spraying effect on the surface has a considerable impact on the quality. The color of the surface of the product depends on the consistency of the coating thickness to a considerable extent. If the coating thickness of the surface is inconsistent, it will cause the surface to be rough, and there will be edge paint sagging and paint orange peel phenomenon, and the coating is too thick. Areas have a tendency to c...

AI Technical Summary

Problems solved by technology

This causes the problem of uneven coating thickness when the robot sprays the arc-shaped curved surface area, so that when spraying such products in actual production, the appearance quality of the product cannot be guaranteed

This kind of surface is often involved in the trunk, chassis cover, roof, bumper, etc. of the car body. Generally, the setting of spraying parameters is relatively rough, which is a waste of paint.

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