摘要
分别建立了刀倾型弧齿锥齿轮铣齿机和双转台五轴加工中心的运动学模型,进行运动转换求解时,选择原点和z轴分别与齿坯设计交叉点和齿坯轴线重合的坐标系作为描述运动的基础坐标系,调整两类机床的基础坐标系使其相对于各自的齿坯和刀盘分别具有相同的位姿,从而建立两类机床运动模型之间的联系.将刀盘相对于基础坐标系的位姿与齿坯相对于基础坐标系的转速分开求解,根据等效转化的原则求解五轴加工中心的各轴运动;根据挂轮滚比计算出产形轮与被切制齿轮的速比.实现了切齿运动由刀倾型弧齿锥齿轮铣齿机向五轴加工中心的实时转换,因而可以用五轴加工中心切制出与刀倾型弧齿锥齿轮铣齿机切制的齿型一致的齿轮,VERICUT切齿仿真得到的齿型证明了这一点.
The kinematic models of tilting type spiral bevel gear milling machine tool and dual turntable five-axis machining center were established respectively.The coordinate system of which the origin and z axis are overlapping with the crossing point and axis of the gear blank respectively was chosen as the basic coordinate system to describe the motion when the kinematic transformation solution was sought.The basic coordinate systems of the two kinds of machine tools were adjusted respectively,so that their position and orientation with respect to their gear blanks and cutterheads were the same.Then,the connection between the kinematic models of the two kinds of machine tools was established.The position and orientation of the cutterhead related to the basic coordinate system and the angular velocity of the gear blank related to the basic coordinate system were solved respectively.The motion of the five-axis machining center was solved according to the principle of equivalent transformation,and the speed ratio of the imaginary generating gear to the gear blank was calculated according to decimal ratio.The cutting motion conversion in real time from the tilting type spiral bevel gear milling machine tool to the five-axis machining center was realized.Thus the same gear as was produced by the tilting type spiral bevel gear milling machine tool can be machined by the fiveaxis machining center.The cutting simulation with the VERICUT verified this argument.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CSCD
北大核心
2017年第10期1062-1069,共8页
Journal of Tianjin University：Science and Technology
基金
江苏省工业装备数字制造及控制技术重点实验室开放研究基金资助项目(DM2015001)
国家自然科学基金资助项目(51605328)
天津市应用基础与前沿技术研究计划重点资助项目(14JCZDJC39600)~~
关键词
五轴加工中心
弧齿锥齿轮
刀倾法
运动学求解
仿真
five-axis machining center
spiral bevel gear
tilting method
kinematic solution
simulation
