摘要
以基圆渐开线组合线为对象,基于型线曲率半径的时变性,采用双圆弧逼近法对型线的立铣刀位轨迹进行处理,建立铣削型线的进给量模型。结果表明,铣削外壁的实际进给量小于设定的进给量,铣削内壁的实际进给量大于设定的进给量,二者都随刀位轨迹呈非线性减小。
In this paper, through taking the combination profile of base circle involute as the object and basing on the time-varying characteristics of the profile＇s curvature radius, the double circular arc approximation method was used to process tool path of the scroll profile and to establish the teed rate model tor the end milling scroll profile. The results show that, the actual teed rate is smaller than preset teed rate in the end milling outer profile, meanwhile, the actual teed rate in the end milling inner profile is larger than the preset one and both of them are nonlinear decreasing with the tool path.
作者
孙永吉
刘涛
唐林虎
王栋梁
张红梅
邹雪娟
SUN Yong-ji;LIU Tao;TANG Lin-hu;WANG Dong-liang;ZHANG Hong-mei;ZOU Xue-juan(College of Mechanical and Electronic Engineering,Lanzhou University of Technology;Engineering Training Cenfer Lanzhou Institute of Technology;CNPC Lanzhou Petrochemical Corporation)
出处
《化工机械》
CAS
2018年第5期643-647,共5页
Chemical Engineering & Machinery
基金
国家自然科学基金项目(51665035)
甘肃省高等学校科研项目(2016B-112)
甘肃省陇原青年创新人才扶持计划
关键词
变截面涡旋压缩机
立铣
变截面涡旋齿
曲率半径
刀位轨迹
进给量
variable section scroll wrap
end milling
variable section scroll wraps
radius of curvature
tool path
teed rate
