复杂形状零件单点渐进液压成形厚度分布研究

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中图分类号：TG386.4

DOI：10.3969/j.issn.1004-132X.2025.06.021 开放科学（资源服务）标识码（OSID）：

Study on Thickness Distribution of Single Point Incremental Hydroforming of Complex Shaped Parts

SHANG Miao LI Yan* SHAN Shunkun YANG Mingshun School of Mechanical and Precision Instrument Engineering，Xi'an University of Technology， Xi'an，710048

Abstract： To analyze and enhance the performances of single point incremental forming for complex shaped parts， a new process combining SPIF and hydroforming was presented for manufacturing multi-featured parts with spire structures. The forming processes of the target parts were designed， the theoretical prediction model of thickness was established，and the effects of different hydraulic parameters on the thickness distribution of the target parts in different forming stages were analyzed. The experimental results show that complex shaped parts may be formed using the new processes and appropriate hydraulic pressures； the geometric errors between the experimental and theoretical profiles may be reduced from 11.44% to 5.18% with assistance compared to SPIF without hydraulic assistance;the thickness distribution patterns are related to the assisted pressure，forming heights，forming shape，etc.，and the established theoretical model may be used to predict the thickness distribution of complex shaped parts.

Key words： complex shape； single point incremental forming（SPIF）；hydroforming； thicknessdistribution

0 引言

单点渐进成形（singlepointincrementalforming，SPIF）技术是一种使用成形刀具通过逐点累积变形的方式将板材加工成所需形状零件的一种加工方式[1-2]。（剩余10704字）