立式内拉床床身结构设计与优化

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中图分类号：TG57；TG502.14；TP391.99 文献标志码：B

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（1.上海大学机电工程与自动化学院，上海200444；2.浙江畅尔智能装备股份有限公司，浙江 ）

Structural design and optimization of vertical internal broaching machine bed

SHI Jingtao'，LUO Jing²，YOU Huiwen’，TANG Yang'，ZHANG Shunqi. School of Mechatronic Engineering and Automation， Shanghai University， Shanghai 2O0444，China;2. Zhejiang CHR Intelligent Equipment Co.，Ltd.，Jinyun 321404， Zhejiang，China）

Abstract： To balance the requirements of lightweight and high rigidity broaching machine bed structure， a parametric size optimization design method based on mid-section parameters is proposed. The parameterized finite element model of the bed with mid-section is built，combined with static analysis and modal analysis，to extract the stressdistribution，displacement response，and modal vibration mode of the bed.An optimization model is constructed with plate thickness as the design variable，mass minimization as the objective，and maximum stress，displacement，and the first-order natural frequency as constraints. Feasible direction optimization algorithm is used to achieve balanced optimization of bed body mass， stiffess，and dynamic performance. The results show：the mass of the optimized bed is reduced by 5.75% ，the maximum stress is reduced by 27.69% ，the top displacement is reduced by 3.58% ，and the first-order natural frequency is increased by 6.83% . Compared to traditional 3D solid modeling and optimization methods，the mid-section plate thickness parametrization can provide theoretical support and technical assistance for the lightweight design and performance enhancement of the bed structure.

Key Words：vertical internal broaching machine； structural optimization；mid-section parameterization ; lightweigh

0 引言

拉削加工具有精度高、效率高、可以一次成型等优势，被广泛应用于航空、汽车等领域，在加工内齿、花键或键槽等[1-2]零部件，尤其在航空涡轮盘榫槽等复杂零件制造中占据着不可替代的地位。（剩余6098字）