摘要
针对异形薄壁复杂框体工件装夹过程中夹紧力大小主要依赖人工经验,装夹变形难以控制等问题,采用有限元分析方法,在ABAQUS中建立工件-夹具系统模型,利用生死单元技术模拟铣削加工材料去除过程,同时通过力矩平衡方程揭示夹紧力和切削力之间的关系,最终以减小工件装夹的最大弹性变形量为目标,对铣削过程的切削力和夹紧力进行匹配优化。验证结果表明,采用优化后的装夹参数可以有效减小工件变形量并提高装夹效率。
According to the problems that clamping force mainly depends on experience during fixturing the thinwall frame shape workpiece which often results in distortion of the workpiece,an FEA method is used to simulate the deformation by building the model of workpiece-fixture system with ABAQUS.The chip removal process is simulated using the element death technique.To reduce the maximum elasticity of the workpiece,the torque balance equation is used to optimize the cutting force and the clamping force.The results indicate that optimized clamping parameters can effectively reduce workpiece deformation and improve clamping efficiency.
作者
郭诗瑶
姜涛
杨宏青
樊喜刚
GUO Shiyao;JIANG Tao;YANG Hongqing;FAN Xigang(Beijing Xinghang Electromechanical Equipment Co.,Ltd.,Beijing 100074,CHN)
出处
《制造技术与机床》
北大核心
2018年第7期146-149,共4页
Manufacturing Technology & Machine Tool
基金
"高档数控机床与基础制造装备"科技重大专项资助项目(2017ZX04011015)
关键词
薄壁件
有限元仿真
装夹变形
夹紧力
切削力
thin-wall workpiece
finite element simulation
fixture deformation
clamping force
cutting force
