摘要
为有效提高螺旋曲面成形加工的精度,根据螺旋曲面与成形刀具的相切接触原理,建立了螺旋曲面与成形刀具之间的正反算数学模型;提出一种基于误差反向补偿的干涉消减方法,通过在工件理论廓形上反向补偿干涉量,形成螺旋曲面新的虚拟计算廓形,再以该廓形反向计算成形刀具截形并进行迭代,最终得到可减小干涉误差的成形刀具截形;构建了螺旋曲面成形加工干涉量的计算模型,给出了螺旋曲面成形加工干涉消减流程,并讨论了所提方法的效率和适用范围。通过计算实例验证了所提方法的有效性。
If interference exists between helical surfaces and forming cutter in forming process,the precision of helical surfaces forming will be affected.Therefore,interference compensation before machining can improve the accuracy of helical surfaces forming.According to the contact principle of helical surfaces contact and forming tool,the mathematical model of forward and inverse calculation between helical surfaces and forming tool was established,and a kind of interference reduction method based on error inverse compensation was proposed.A new virtual computation profile of helical surfaces was formed by reverse interference compensation on the theoretical workpiece profile,and then a forming tool that could reduce the interference error was obtained by using the virtual computation profile to reverse calculation of forming tool section and iterating.A mathematical model of helical surfaces forming interference was proposed,and its efficiency and applicable scope were discussed.Through a calculation example,the effectiveness of the proposed method was verified.
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2017年第12期2692-2699,共8页
Computer Integrated Manufacturing Systems
基金
国家自然科学基金资助项目(51375512)
国家科技支撑计划资助项目(2014BAF08B02)~~
关键词
螺旋曲面
成形加工
干涉
刀具廓形
反向补偿
helical surface
forming process
interference
tool profile
inverse compensation