摘要
针对偏心薄壁件的高速车削加工方法开展了相关研究,设计了高精度的专用偏心夹具,实现了对偏心薄壁件提供均匀的夹持力,提高了工件的偏心精度和装夹效率。以PCD刀具为切削工具,7075铝合金为切削对象,通过设计正交试验法,验证了在高速切削环境下,合理的进给量对表面质量的提升至关重要,进给量和背吃刀量是增加切削力的主要因素,切削速度对切削力和表面粗糙度影响较小,适当提高刀尖圆角半径可降低工件的粗糙度。
Aiming at the high-speed turning machining method of eccentric thin-walled parts,a high-precision special eccentric fixture is designed to provide uniform clamping force for eccentric thin-walled parts,which improves the eccentricity and clamping efficiency of the workpiece.With the PCD tool as the cutting tool and the 7075 aluminum alloy as the cutting object,the orthogonal test method is designed to verify that the reasonable feed rate is critical to the surface quality improvement in high-speed cutting environments.The feed rate and depth of cut are the main factors for increasing cutting force.The cutting speed has little effect on the cutting force and surface roughness.Properly increasing the radius of the tool fillet can reduce the roughness of the workpiece.
作者
骆仕斌
李爱娜
黄松福
邱英洋
LUO Shibin;LI Aina;HUANG Songfu;QIU Yingyang(Yangjiang Vocational and Technical College,Yangjiang 529566,China;Yangjiang Ruijing Moulding Co.,Ltd.,Yangjiang 529566,China)
出处
《机械工程师》
2019年第8期173-175,180,共4页
Mechanical Engineer
基金
广东省机械教指委课题:基于翻转课堂的《模具CAD技术应用》课程改革与资源建设(JZ201835)
阳江职业技术学院2018年科技课题:大型液晶电视外壳双层结构注塑模具关键技术研究(2018kjyb06)
关键词
偏心薄壁件
高速车削
正交试验
进给速度
eccentric thin-walled parts
high-speed turning
orthogonal test
feed rate
