基于型面特征的热冲压模具冷却水道自动生成方法OA

To address the problems of excessive reliance on manual experience,low efficiency,and difficulty in balancing surface conformity and manufacturability in the design of cooling channels for hot stamping dies,an automatic cooling channel generation method based on surface features is proposed.The method utilizes the finite element mesh of the die surface as the geometric foundation,constructs equally spaced cross-sections along the channel main direction,and extracts feature points from these cross-sections to generate the channel centerline.To meet the constraint on segment number and reduce the complexity of the centerline,a simplification algorithm based on progressive fitting and angle threshold filtering is proposed to automatically optimize and adjust the structure of the centerline.Case studies on typical hot stamping dies demonstrate that the generated cooling channel paths exhibit good performance in terms of channel spacing,surface conformity,and distribution along the forming surface.The channel spacing qualification rate remains at a high level,and the generated paths are simple,continuous,and have a reasonable number of segments,meeting practical machining requirements.The results indicate that the proposed method can effectively improve the efficiency of cooling channel design with minimal manual intervention.