珩磨轨迹的控制与优化  

Controlling and Optimization of the Honing Trajectory

作　　者：赵玉祥[1] 马戎 秦继宏 张雪萍[1] 姚振强[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上汽通用五菱汽车股份有限公司,广西柳州545000

出　　处：《组合机床与自动化加工技术》2014年第10期47-52,共6页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家科技支撑计划资助项目(2012BAF06B03)

摘　　要：基于对四种不同形状缸孔的统计分析,对缸孔-活塞摩擦副的摩擦功进行仿真计算,发现腰鼓形缸孔所对应的摩擦功最小,且随着缸孔截面尺寸差异程度的增大而增大。对缸孔珩磨轨迹进行重构分析,揭示了分布轨迹中间密集两端稀疏的规律,提出了油石错位安装的珩磨头结构,以提高缸孔的形状精度。建立了珩磨轨迹分布与珩磨去除量的转换关系,基于对圆柱度的数值仿真计算,证明了该方法能有效控制并优化珩磨轨迹,提高缸孔的形状精度。This paper computes the friction work of the cylinder hole-piston friction pair by means of simulation and finds that the drum-shaped cylinder hole has the minimum friction work,which increases with the rise of the cross section diameters＇ difference,based on the statistics of four typical cylinder hole shapes.Through reconstruction and analysis of the honing trajectory,the paper reveals that the distribution is sparse on both end and intense in the middle. Also the paper develops a honing head with dislocated stones who can overcome the defect and improve the shape precision. This paper establishes the conversion relation between the honing trajectory distribution and material removal amount. The numerical simulation of the cylindricity verifies that this method can effectively improve the cylinder hole shape precision.

关 键 词：缸孔形状 珩磨轨迹 形状精度 

分 类 号：TH16[机械工程—机械制造及自动化] TG68[金属学及工艺—金属切削加工及机床]