金属切削过程物理仿真技术的应用

摘要

为提高薄壁弱刚度零件的加工质量及加工效率,提出了基于金属切削过程物理仿真软件AdvantEdge,对铝合金材料薄壁弱刚性零件的切削过程进行了物理仿真分析,得到了不同几何参数的刀具在切削过程中所产生的切削力和切削热分布趋势.通过分析切削力、切削热,对刀具几何参数进行了优化;同时以切削力为优化目标对切削参数进行了优化.利用优化后的刀具及切削参数指导实际生产,使得该零件在实际加工过程中,切削变形得到了控制,尺寸精度和几何精度满足了设计要求,并使铣削加工效率提高了15%以上.%To improve the quality and efficiency of thin-wall and weak rigid parts,a physical simulation software Advan-tEdge for metal cutting process is proposed.And physical simulation analysis is made on the cutting process of a certain thin-wall aluminum alloy work piece with weak rigidity.Thus the geometrical parameters of tools are optimized based on a-nalysis of cutting force and heat.Meanwhile,we have improved the cutting parameters to optimize the cutting force.The optimized tools and cutting parameters are used to guide the practical production.As a result,cutting deformation is effec-tively controlled in practical process.The dimensional and geometric accuracy of the work piece meets the design require-ment and the milling processing efficiency is improved by 1 5 % or more.