TC4钛合金干切削镗孔工艺参数优化研究  

Research on Parameters Optimization in Bending TC4 Alloy without Coolant

作　　者：宋戈 王伟 刘翘楚 李卫东 Song Ge;Wang Wei;Liu Qiaochu;Li Weidong

机构地区：[1]成都飞机工业(集团)有限责任公司

出　　处：《工具技术》2023年第5期23-28,共6页Tool Engineering

基　　金：国家重点研发计划(2019YFB1704802)。

摘　　要：镗孔加工是影响飞机制造精度、效率和质量的关键工艺方法。而关键部位的干切削加工要求给TC4钛合金孔的镗削加工提出了新的技术挑战。本研究通过设计TC4钛合金高速干切镗孔正交实验,在镗孔尺寸精度满足要求的基础上,分析了工艺参数对刀具磨损、表面粗糙度、切屑形貌等关键结果和过程要素的影响规律,建立了对应的数值关系方程,开展了以切削效率为目标的工艺参数优化,优化后的工艺参数组合较原有工艺切削效率提升28.05%。开展优化后工艺参数镗孔验证实验,结果表明,刀具磨损量、表面粗糙度和切屑形貌等均达到加工要求。Hole bending is the key processing in aviation manufacturing considering accuracy,efficiency and quality.Considering the requirement of machining without coolant in key structure parts machining,the technology challenges are brought in TC4 alloy hole bending.In this research,a series of hole bending orthogonal experiments are carried out,and the influence of bending parameters of the tool wear,surface roughness,chip appearance are analyzed and modeled.The machining efficiency under the optimized parameters improves 28.05% compared with that under the used parameters.The verification experiment is carried out,the tool wear,surface roughness,and chip appearance satisfy the technology requirements.

关 键 词：TC4钛合金 干切镗孔 刀具磨损 表面粗糙度 切屑形貌 

分 类 号：TG136.4[一般工业技术—材料科学与工程] TH161[金属学及工艺—合金]