基于尺寸效应的微径铣刀磨损预测模型的建立与实验研究  

Establishment and experimental study of a wear prediction model of micro milling tool in consideration of the size effect

作　　者：孟杰[1] 陈小安[2] 吕中亮[1] 李翔[1] 

机构地区：[1]重庆科技学院机械与动力工程学院,重庆401331 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《振动与冲击》2017年第6期229-234,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金(51505049);重庆市基础与前沿研究计划项目(CSTC2013JCYJA70004);重庆市教委科学技术研究项目(KJ1501314)

摘　　要：刀具磨损是影响微细铣削加工的重要因素之一,将材料的本构模型与Usui刀具磨损模型相结合,并考虑到微细加工中存在的尺寸效应,提出一种新的刀具磨损预测模型,采用有限元仿真和物理实验的方法确定硬质合金刀具铣削碳钢时刀具磨损预测模型中的相关参数,并进行了实验验证。为了更直观的观察、预测刀具磨损情况,将该模型应用于微细铣削仿真过程中,可求得任意时刻刀具的磨损及几何轮廓。为微细铣削中刀具磨损的研究提供了新的方法。Tool wear is one of the important factors that affect the micro milling process. Combining the constitutive model and Usui tool wear model, and considering the size effect during micro machining, a new tool wear prediction model was proposed. The relevant parameters of the prediction model for the micro milling of carbon steel workpieces by tungsten carbide tools were determined by the finite element simulation and physical experiment, which were then verified by further experiments. In order to observe and predict the tool wear more apparently, the prediction model was applied yet to a micro milling process simulation, so as to obtain the tool wear and its geometrical shape at any time in the process. The study provides a new method for studying the tool wear during micro milling.

关 键 词：微细铣削 微径铣刀 刀具磨损 尺寸效应 刀具磨损预测模型 

分 类 号：TG501[金属学及工艺—金属切削加工及机床]