摘要
高速、高精度零传动滚齿机的刀具轴和工件轴直接与电机轴连接,从而避免了齿轮组的回转误差和齿侧间隙等对回转精度和动刚性的影响。但是刀具轴或工件轴的等效转动惯量极小,使得负载转矩波动引起的回转振动很大。在伺服机构中设计一种可调式惯性阻尼器,直接附加在电机转轴上,惯性阻尼器的阻尼系数可以通过惯性轮和电机轴之间的间隙来调整。建立了附加惯性阻尼器的伺服系统的数学模型,并且通过理论分析和系统仿真,验证了可调式惯性阻尼器对于零传动滚齿机系统刚度提高的有效性。
In high speed and high precision zero-drive hobbing machine, the hob-spindle and the work-table are directly linked to the motors. This structure has ability to avoid bad influence on rotational accuracy and dynamic stiffness caused by rotational error and backlash error of gears. Since equivalent moment of inertia of both the hob-spindle and the worktable are very small, rotating vibration caused by load torque fluctuation becomes large. A variable inertial damper, whose viscous damping coefficient could be adjusted by changing the gap between inertia wheel and motor spindle, was designed in servomechanism and was directly attached on the motor spindle. The structure of variable inertial damper was proposed, and the mathematical model of servo system with inertial damper was built. By using theoretical analysis and system simulation, it is demonstrated the validity of variable inertial damper on the aspect of increasing the system stiffness of zero-drive hobbing machine.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2006年第3期710-712,共3页
Journal of System Simulation
基金
高等学校博士学科点专项科研基金资助项目(20020611004)
国家自然科学基金资助项目(50575232)
关键词
零传动
滚齿机
可调惯性阻尼器
系统刚度
zero-drive
gear hobbing machine
variable inertial damper
system stiffness
