关键词: 滚压成形, 偏差, 工艺补偿, 折边胶

Abstract: In order to meet the stricter requirements for appearance accuracy of aluminum alloy automotive bodies, a roller pose compensation method was proposed for the dimensional deviation of automotive bodies. The dimensional deviation matrix was obtained by equidistant discretization of the dimensional deviation interval and the die edge. Based on the Frenet scale frame and Cartesian coordinate transformation, the dimensional deviation was mapped to the roller pose, and the deviation matrix of roller pose was obtained. The roller pose compensation amount was converted into the adjustment amount of the row number of the deviation matrix of roller pose, and the compensated roller pose was obtained. Among them, the deviation matrix of roller pose was determined by the surface/curve equation of die, the roller angle and the quantization model of dimensional deviation and the value of tool center point-robot target point(TCP-RTP). The quantization model of dimensional deviation and the value of TCP-RTP was obtained by finite element simulation of finite element method-smoothed particle hydrodynamics. The results show that the average value of the dimensional deviation is reduced from 0.32mm to 0.14mm after the roller pose compensation.

Key words:  , roller forming, deviation, technological compensation, hemming adhesive