机电工程技术2024，Vol.53Issue(6)：29-32,55,5.DOI:10.3969/j.issn.1009-9492.2024.06.007
单方向夹持悬伸薄壁结构件多轴切削工艺优化
Optimization of Multi-axis Cutting Technology for Unidirectional Clamping Overhanging Thin Wall Parts
摘要
Abstract
the cutting and machining of unidirectional clamping overhanging thin wall parts is taken as research object.Fracture,vibration over cutting,dimensional deformation exceeding tolerance,and vibration pattern machining defects areeffectively avoided by process design optimization.Siemens NX12.0 and macro programs are combined to complete the four-axis machining program of the parts.By reducing the ratio of minimum wall thickness to extension length and adopting a macro program spiral milling cutting process,the problem that cutting vibration during the machining process easily causes fracture between the curved surface and connecting base is solved.Segmented machining of thin-walled surfaces and controlling the cutting direction are proposed together to reduce the vibration and overfitting of thin-walled surface,the surface vibration patterns and roughness tolerances are eased.The rotational runout error of the cylindrical parts is strictly controlled,and the problem of bad precision of fixed axis machining in CNC systems without RTCP function.Multiple cases verify that,the machining of the parts meet the machining technology requirements.The proposed optimiztion provides reference for improving the cutting quality of overhanging thin-walled complex structural parts.关键词
单方向夹持悬伸薄壁零件/多轴切削加工/加工缺陷/优化策略/过切和变形Key words
overhanging thin-walled parts with unidirectional clamping/multi axis cutting machining/processing defect/optimization strategy/over cutting and deformation分类
机械制造引用本文复制引用
陈学翔,陈洁训,李南华,黄志楷..单方向夹持悬伸薄壁结构件多轴切削工艺优化[J].机电工程技术,2024,53(6):29-32,55,5.基金项目
全国教育科学"十三五"规划教育部重点课题子课题(DCA190327-44096) （DCA190327-44096）
广东省人力资源和社会保障厅广东省技工教育和职业培训省级课题(KT2023032) （KT2023032）
