机床与液压
機床與液壓
궤상여액압
Machine Tool & Hydraulics
2015年
20期
27-30
,共4页
电主轴%陶瓷%径向刚度%参数化%优化%支撑跨距
電主軸%陶瓷%徑嚮剛度%參數化%優化%支撐跨距
전주축%도자%경향강도%삼수화%우화%지탱과거
Motorized spindle%Ceramic%Radial stiffness%Parameterization%Optimization%Support span
将陶瓷材料Si3 N4应用于高速电主轴，利用APDL语言对其进行参数化设计程序开发。分析并计算了陶瓷电主轴的径向切削载荷及刚度，通过有限单元法分析了主轴部件的静力变形和应力分布。以弹簧－阻尼单元COMBIN14模拟轴承支撑，创建了以支撑跨距为变量的主轴参数化驱动模型。采用零阶算法实现了主轴部件静态性能优化，减小了径向载荷作用下的Von Mises应力，并计算出了更为合理的主轴支撑跨距。优化后陶瓷电主轴径向切削刚度提高了12?29％，有效改进了主轴部件的加工精度和稳定性。
將陶瓷材料Si3 N4應用于高速電主軸，利用APDL語言對其進行參數化設計程序開髮。分析併計算瞭陶瓷電主軸的徑嚮切削載荷及剛度，通過有限單元法分析瞭主軸部件的靜力變形和應力分佈。以彈簧－阻尼單元COMBIN14模擬軸承支撐，創建瞭以支撐跨距為變量的主軸參數化驅動模型。採用零階算法實現瞭主軸部件靜態性能優化，減小瞭徑嚮載荷作用下的Von Mises應力，併計算齣瞭更為閤理的主軸支撐跨距。優化後陶瓷電主軸徑嚮切削剛度提高瞭12?29％，有效改進瞭主軸部件的加工精度和穩定性。
장도자재료Si3 N4응용우고속전주축，이용APDL어언대기진행삼수화설계정서개발。분석병계산료도자전주축적경향절삭재하급강도，통과유한단원법분석료주축부건적정력변형화응력분포。이탄황－조니단원COMBIN14모의축승지탱，창건료이지탱과거위변량적주축삼수화구동모형。채용령계산법실현료주축부건정태성능우화，감소료경향재하작용하적Von Mises응력，병계산출료경위합리적주축지탱과거。우화후도자전주축경향절삭강도제고료12?29％，유효개진료주축부건적가공정도화은정성。
The ceramic material Si3 N4 was applied for high?speed motorized spindle, and parametric design program of the spindle was developed by APDL language. Cutting load and stiffness along radial of the spindle were analyzed and calculated, and then its static deformation and stress distribution were analyzed through finite element method. Spring?damping element COMBIN14 was used to simulate bearing support, and parametric model of the spindle was set up based on variable with support span. Static characteristics of the spindle was optimized through zero?order method, then Von Mises stress caused by radial load was reduced and a more reasonable support span was calculated. Radial cutting stiffness of the ceramic motorized spindle was increased by 12?29%, the working accuracy and stability of the spindle were improved effectively.
