摘要
机器人铣削加工时容易发生模态耦合颤振,对刀具和机器人本体造成伤害,从而导致机器人定位精度降低.为了研究机器人铣削加工稳定性的影响因素,进行大量的铣削加工实验,研究主轴转速、轴向切深、进给速度、刀具悬长、顺逆铣以及切削材料等因素对于机器人铣削加工稳定性的影响.结果表明:在一定范围内,主轴转速越低、进给速度越快、轴向切深越大、刀具悬长越短、采用逆铣、材料硬度越大越容易导致模态耦合颤振的发生,且主轴转速和刀具悬长对于模态耦合颤振影响显著.
The robot milling is prone to modal coupling chatter, which will do damage to the tool and the robot body, resulting in a decrease in the positioning accuracy of the robot. In order to study the influencing factors of robot milling, a large number of experiments were carried out to study the effects of spindle speed, axial depth of cutting, feed rate, tool suspension length, up and down milling, and cutting materials on robot modal coupling chatter. The results showed that in a certain range, the lower the spindle speed, the faster the feed rate, the deeper the cutting depth, the shorter the suspension length, the up-milling, the harder the material, the more likely the modal coupling chatter occurs. The spindle speed and the tool suspension impact significantly on modal coupling chatter.
作者
刘宇
何凤霞
LIU Yu;HE Feng-xia(School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China)
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2019年第7期991-996,共6页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(51875094,51575094)
中央高校基本科研业务费专项资金资助项目(N170304020)
关键词
机器人铣削
模态耦合颤振
切削参数
刀具悬长
顺逆铣
robot milling
modal coupling chatter
cutting parameter
tool suspension length
up and down milling
