Error compensation method based on binder spraying additive manufacturing

• Main Authors: YU JIANJUN, JIA ZHAOQIANG, MA QIANCHAO, YANG WEIDONG, WANG YUANYUAN
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention relates to an error compensation method based on binder spraying additive manufacturing, which comprises the following steps of: obtaining an offset error formula of triangular patches by considering the interaction of step errors and penetration errors, determining the number m of the triangular patches in an input STL (Standard Template Library) model, defining a set M as an array of the triangular patches Tj, offset errors of all triangular patches in the STL model are obtained; and calculating offset compensation values of the vertexes of the STL model according to the projection of the offset error of the triangular patch in the direction of the normal vector of the vertexes, traversing all the vertexes, inwards biasing the vertexes vi of the STL model along the reverse direction of the normal vector of the vertexes according to the corresponding offset compensation values, and obtaining the offset vertexes so as to obtain the compensated STL model. According to the method, the size error c