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1. 发明授权

US5682319A Computer numerically controlled machines 失效
标题翻译：计算机数控机床
公开(公告)号：US5682319A
公开(公告)日：1997-10-28
申请号：US563410
申请日：1995-11-28
申请人： Patrick Gerard Boland , Glenn Charles Brien
发明人： Patrick Gerard Boland , Glenn Charles Brien
IPC分类号： G05B19/4068 , G05B19/4103 , G06F19/00
CPC分类号： G05B19/4068 , G05B19/4103 , G05B2219/33131 , G05B2219/34164 , G05B2219/35373 , G05B2219/35459 , G05B2219/43158 , G05B2219/50157 , G05B2219/50208
摘要： A computer numerically controlled (CNC) machine tool is provided in which a cutting tool is movable along a programmed path determined by a part program in a programmable control unit (PCU). A trajectory interpolator receives high level motion commands and a feedrate specification from the PCU to produce interpolated position commands. A position controller controls movement of the cutting tool in response to the interpolated position commands. The machine tool further includes a handwheel and a manual pulse generator (MPG) which can be used in MPG feed mode to control movement of the cutting tool incrementally along the programmed path in either the forward or reverse direction. In MPG feed mode, an MPG feed specification from an MPG position counter is superimposed onto the feedrate specification in the trajectory interpolator. MPG feed mode can be used advantageously during part program tryout, or during a cutting operation to retrace along the programmed path, to extract the cutting tool from the workpiece if the tool jams or breaks.
摘要翻译：提供了一种计算机数控（CNC）机床，其中切割工具可沿着由可编程控制单元（PCU）中的零件程序确定的编程路径移动。轨迹插补器从PCU接收高电平运动命令和进给速度指令以产生内插位置命令。位置控制器响应于内插位置命令控制切割工具的移动。机床还包括一个手轮和一个手动脉冲发生器（MPG），可以用于MPG进给模式，以沿着编程的路径向前或向后递增地控制切削刀具的移动。在MPG进给模式中，来自MPG位置计数器的MPG进给规格被叠加到轨迹插补器中的进给速度规格上。 MPG进给模式可以在零件程序试运行期间或在沿编程路径回切的切割操作期间有利地使用，如果工具卡住或断裂，则从工件中提取切削工具。

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