PAC5000模具钢的高速铣削加工试验研究  

Experimental Study of High Speed Milling on PAC5000 Die Steel

作　　者：苏发[1,2] 刘勇[1] 练国富[2] 

机构地区：[1]广州航海学院船舶与海洋工程学院,广东广州510725 [2]福建工程学院机械与汽车工程学院,福建福州350118

出　　处：《机床与液压》2016年第15期105-111,共7页Machine Tool & Hydraulics

基　　金：福建省自然科学基金资助项目(2015J01629);福建省属高校科研专项计划项目(JK2012034);广州航海学院大学生创新创业训练计划项目(D420819)

摘　　要：对PAC5000模具钢进行高速铣削单因素及正交试验研究,建立铣削力、表面粗糙度和表面残余应力的回归数学模型,分析各铣削参数对铣削力、表面粗糙度和表面残余应力的影响规律及影响程度。结果表明:铣削力、表面粗糙度随铣削速度的增加而减小,随背吃刀量、每齿进给量和侧吃刀量的增加而增大,各铣削参数对轴向铣削力的影响均很大,侧吃刀量是影响轴向铣削力的最主要因素;对平行和垂直于进给方向上的表面粗糙度最敏感的铣削参数分别是每齿进给量和背吃刀量,并且,对垂直于进给方向上的表面粗糙度影响最大;平行于铣削方向上的残余应力表现为压应力,垂直于铣削方向的残余应力表现为拉应力,提高铣削速度,可减小残余应力。The single factor and orthogonal experimental reaserchs were carried out on the high speed milling of PAC5000 die steel. The regression mathematics models for milling forces,surface roughness and residual stress were established,and the influence degree of each milling parameters on test results was analyzed. The results show that the milling force,surface roughness will decrease with the increasing of the milling speed,and increase with feed per-tooth,axial milling depth and radial milling depth increasing. The effects of various parameters on the axial milling force are all very big,axial depth of milling is the main influence factor of the axial milling force. The most sensitive effect of on parallel and perpendicular to the feed direction on the surface roughness respectively is feed per-tooth and axial milling depth,the maximum effect is on perpendicular to the feed direction. The residual stress is shown as compressive stress on parallel to the feed milling direction,and the residual stress is shown as tensile stress on perpendicular to the feed milling directio,and improving the milling speed,which can reduce the residual stress.

关 键 词：PAC5000模具钢 高速铣削 铣削用量 铣削力 表面粗糙度 表面残余应力 

分 类 号：TG54[金属学及工艺—金属切削加工及机床]