用切线法数控加工高次非球面  

Processing high-order aspherical by CNC tangent method

作　　者：于化东[1] 顾莉栋[1] 朴承镐[1] 耿振野[1] 于正林[1] 轩洋[1] 

机构地区：[1]长春理工大学机电工程学院长春,130022

出　　处：《吉林大学学报（工学版）》2012年第2期354-359,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50775014)

摘　　要：论述了切线法数控加工非球面的新原理,详细分析了实施该原理的三种可行的加工方法,即以工件轴为回转中心的成形方法、以磨轮轴上磨轮的几何中心Q点为回转中心的成形方法和以磨轮轴上M点为回转中心的成形方法,并建立了3种成形方法的轨迹成形数学模型。根据非球面加工性能的要求、保证机床构件精度的难易、机床动态特性的合理性和机床结构的合理性等问题考虑,确定了其中一种最合理的成形方法,即以磨轮轴上的M点为回转中心的成形方法。The new principle for high-order aspherical surface machining is discussed. Three feasible machining techniques are analyzed in details, which are the wheel spindle forming methods that which take the workpiece axis, the geometric centre point Q, and point M on the wheel spindle as the rotating centre respectively. In addition, the mathematical models of trajectories of the three machining methods are established. Finally, the best forming technique, i. e. the wheel spindle forming method that takes point M as the rotating centre, is determined according to the requirement of machining performance, the accuracy and dynamic characteristics of the machine tool and the rationality of the structure.

关 键 词：机床 非球面机械加工 切线法 数字控制 

分 类 号：TG580.1[金属学及工艺—金属切削加工及机床]