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本文以两种实用的数控系统为例,说明了数控系统的设计方法及联接关系,揭示了它们的内部构造和如何对外设进行控制,阐述了机与电是怎样结合在一起的。。 J_1BNC320数控车床主要用来加工回转体零件,这些加工工艺对数控系统的要求是:能控制主轴正、反转和急停;刀架能实现纵向、横向进给运动,并能在换刀点自动改变四个工位,以便选择刀具:能使冷却泵自动起停;当加工螺纹时,保证主轴转一转,刀架能移动一个被加工螺纹的导程Tmm;能实现直线和圆弧插补;能有超程保护等。
In this paper, two kinds of practical numerical control system are taken as an example to illustrate the design method and connection of numerical control system, reveal their internal structure and how to control peripherals, and explain how machine and electricity are combined together. . J_1BNC320 CNC lathe is mainly used to process the rotary body parts. The requirements of the CNC system for these processing technologies are as follows: it can control the spindle positive, reverse and emergency stop; the tool holder can realize the longitudinal and transverse feed movement and can automatically move at the tool change point Change the four stations, in order to select the tool: make the cooling pump automatically start and stop; when the thread is processed, to ensure that the spindle rotates one turn, the tool holder can move a thread being machined Tmm; can achieve linear and circular interpolation ; Can have over-range protection.