Journal of Jilin University(Engineering and Technology Edition) ›› 2024, Vol. 54 ›› Issue (6): 1528-1536.doi: 10.13229/j.cnki.jdxbgxb.20221223

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Construction method of virtual simulation machining platform for CNC machine tools with multi-spindle heads

An-jiang CAI(),Pei-peng WANG,Chen-xi WANG,Ling LI   

  1. School of Mechanical and Electrical Engineering，Xi 'an University of Architecture and Technology，Xi' an 710055，China
  • Received:2022-11-29 Online:2024-06-01 Published:2024-07-23

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Abstract:

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. Firstly， 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. Finally， 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.

Key words: mechanical manufacturing, CNC machine tools with multi-spindle heads, virtual axis, topology structure, macro program, continuous simulation machining

CLC Number: 

  • TG659

Fig.1

Construction process of virtual simulation processing platform for CNC machine toolwith multi-spindle heads"

Fig.2

Multi-spindle head CNC machine tool"

Fig.3

Topology of motion axis of virtual CNC machine tool with multi-spindle heads"

Fig.4

Schematic representation of subroutine calls"

Fig.5

Process diagram for calling spindle head"

Fig.6

Subprogram flow chart"

Fig.7

Topology of UniForce6 virtual CNC machine tool"

Fig.8

Structure project tree of UniForce6 virtual CNC machine tool"

Fig.9

Geometric model of UniForce6 virtual CNC machine tool"

Fig.10

Schematic diagram of V-axis （virtual-axis）component configuration"

Fig.11

Schematic diagram of tool assembly configuration"

Fig.12

Schematic diagram of replacement spindlehead command replacement configuration"

Table 1

Partial macros contained in subprogram"

宏名作用
SaveUnits保存已激活的单元以在子程序之后恢复
UnitsMetric指定在子程序中被使用的单元
CaxisMachineMotionC轴运动
ProcessMotion运动执行

TurnOnOff

GagePivotOffset

打开/关闭轴偏置计算，0代表关闭，

1代表打开

ConnectCompName定义组件连接
ConnectToCompName

连接到组件，一般与宏ConnectCompName

配合使用，改变组件间的相互依附关系

ActiveTool激活刀具
PivotOffsetCompName定义计算轴偏置的组件名称
RestoreUnits储存单元
MacroVar参数传递

Fig.13

Partial initial program segments of subroutines"

Fig.14

Uninstall program segments of vertical spindle head"

Fig.15

Loading program segments of horizontal spindle head"

Fig.16

Schematic diagram of box parts under the reducer"

Fig.17

Schematic diagram of calling vertical spindle head"

Fig.18

Schematic diagram of position change of thevertical spindle head assembly in structuralproject tree"

Fig.19

Schematic diagram of unloading of the vertical spindle head"

Fig.20

Schematic diagram of calling horizontal spindle head"

Fig.21

Schematic diagram of position changes of thehorizontal spindle head assembly in structural project tree"

Fig.22

Automatic comparison report"

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