摘要
针对目前多主轴头数控机床在虚拟仿真加工过程中无法实现多主轴头切换调用的问题,提出了一种多主轴头数控机床虚拟仿真加工平台的构建方法。首先,根据多主轴头数控机床的多主轴头库创立虚拟轴,构建其各运动轴的拓扑结构,搭建虚拟数控机床的几何模型;其次,利用数控系统的宏和变量等进行二次开发,通过改变虚拟轴中各主轴头组件在虚拟数控机床结构项目树和几何模型中的位置得到宏程序,并通过宏调用指令将此更换主轴头宏程序作为子程序代替执行NC程序中更换主轴头的功能指令,使虚拟数控机床在执行更换主轴头指令时实际执行的是更换主轴头的宏程序,实现了多主轴头数控机床虚拟仿真加工过程中主轴头的动态切换调用;最后,应用该方法构建了UniForce6落地镗铣加工中心的虚拟仿真加工平台,并完成了某箱体零件的仿真加工。结果表明:该虚拟仿真加工平台可实现多个主轴头协同完成加工过程的连续仿真,符合实际加工工况,且在更换主轴头的过程中可检查干涉碰撞情况,进一步提高了多主轴头数控机床虚拟仿真加工的有效性。
Aiming at the problem that current the CNC machine tools with multi-spindle heads cannot realize the multi-spindle head switching call in the virtual simulation process,a method of constructing a virtual simulation processing platform of the multi-spindle CNC machine tool is proposed.First of all,as a multi-spindle head library for CNC machine tools with multi-spindle heads,the virtual axis are created,the topology of each motion axis is constructed,and the geometric model of virtual CNC machine tools is constructed.Secondly,the macro and variables of the CNC system are used for secondary development.By changing the position of the spindle head components in the virtual CNC machine tool structure project tree and the geometric model,the macro program is obtained,and by the macro calls instructions,it is used as a subroutine replace performing the functional instructions for changing the spindle head in the NC program.So that when the command to replace the spindle head is executed,the virtual CNC machine tool actually executes the macro program of changing the spindle head,and the dynamic switching call of the spindle head during the virtual simulation processing of the multi-spindle head CNC machine tool is realized.Using this method,the virtual simulation processing platform of UniForce6 floor boring and milling machining center was constructed,and the simulation processing of a box part was completed.The results show that the virtual simulation processing platform can realize the continuous simulation of multiple spindle heads,which meets the actual processing conditions,and can check the interference and collision situation when changing the spindle head,which further improves the effectiveness of the virtual simulation processing of the CNC machine tool.
作者
蔡安江
王沛彭
王晨曦
李玲
CAI Anjiang;WANG Peipeng;WANG Chenxi;LI Ling(School of Mechanical and Electrical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2024年第6期1528-1536,共9页
Journal of Jilin University:Engineering and Technology Edition
基金
教育部中国高校产学研创新基金项目(2021DZ022)
陕西省自然科学基础研究计划重点项目(2019JZ-50)。
关键词
机械制造
多主轴头数控机床
虚拟轴
拓扑结构
宏程序
连续仿真加工
CNC machine tools with multi-spindle heads
virtual axis
topology structure
macro program
continuous simulation machining
