基于液胀夹具的薄壁柔轮高精度数控加工工艺研究

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中图分类号：TG659 文献标志码：A

Abstract： Machining deformation of thin-walled parts constitutes a critical technical bottleneck in high-precision manufacturing. numerical This study focuses on the thin-walled flexspline made of SNCM439 material， systematically analyzing influencing factors of control machining deformation （cutting force，cutting heat，and clamping stress）. Through optimized computerized （CNC） machining process planning（rough-finish separation and rational sequencing） and fixture design schemes，workpiece deformation during machining was significantly reduced. Practical production verification demonstrates that this solution achieved a 100% qualification rate for processed parts， providing an effective technical approach for high-precision，lowdeformation machining of similar thin-walled components.

Key words：thin-walld parts；machining deformation；computerized CNC machining；hydraulic expansion fixture

0 引言

薄壁零件因其轻量化、省材等优势，广泛应用于航空航天、精密仪器及机器人领域（如谐波减速器柔轮），然而，其低刚性特性导致加工过程易受切削力、切削热及装夹应力影响而产生变形，严重降低尺寸精度，制约形位公差实现[]。（剩余5412字）