摘要
文章在研究螺旋曲面的加工原理的基础上,提出以工件旋转、刀具的坐标变化以及刀具的螺旋角度变化为基础,按空间包络法计算刀触点轨迹,由四轴插补形成了刀具沿螺旋线方向的进给运动,从而实现了前后两个加工截面之间的螺旋位置关系。该方法在国内首次提出四轴坐标系下应用无瞬心包络铣削理论实现螺旋曲面加工,为四轴联动数控机床加工复杂螺旋曲面提供了可靠的理论基础。
A basis of the workpiece rotation and the change coordinate and helical angle of tool was presented, based on machining principle of helical curved surface. Then the track of Cutter-Workpiece points was calculated with the space enveloping technique, and feeding movement of the cutter along direction to spiral was formed by interpolation in four-axis coordinate frame as well. This method that applying theory of non-instan- taneous envelope milling in four-axis coordinate frame to machining helical curved surface was presented firstly in the domestic, and simultaneously the reliable theory was offered for four-axis blocking CNC machine tool processing complicated helical curved surface.
出处
《组合机床与自动化加工技术》
2008年第2期60-61,65,共3页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(50475170)
辽宁省教育厅科技研究项目资助(20060597)
关键词
螺旋曲面
无瞬心包络
四轴联动
helical curved surface
non-instantaneous envelope
four-axis blocking
作者简介
孙兴伟（1970-），女，辽宁朝阳人，沈阳工业大学副教授，天津大学博士，研究方向为CAD／CAM，数字化制造，复杂曲面数控加工技术，（E—mail）sunxiugw@126．com
