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1. 发明授权

US08222557B2 Electric discharge detection method and electric discharge machining apparatus 有权
标题翻译：放电检测方法和放电加工装置
公开(公告)号：US08222557B2
公开(公告)日：2012-07-17
申请号：US12532115
申请日：2008-03-24
申请人： Yuji Kaneko , Takenori Harada
发明人： Yuji Kaneko , Takenori Harada
IPC分类号： B23H1/00
CPC分类号： B23H1/022
摘要： An electric discharge machining apparatus having a gate signal generator for generating a gate signal, a power source for applying a voltage across a work gap formed between a tool electrode and a workpiece, a gap voltage detector for detecting a gap voltage of the work gap, an electric discharge detector for supplying an electric discharge detection signal representing electric discharge to the gate signal generator. The electric discharge detector includes a counter for generating a sample clock having a frequency greater than the frequency of the gate signal, and a comparator for receiving the gap voltage and determining that a fall in the gap voltage is larger than a specified voltage difference in each sample clock. The electric discharge detection signal is generated in response to an output signal of the comparator.
摘要翻译：一种放电加工装置，具有用于产生栅极信号的栅极信号发生器，用于在形成在工具电极和工件之间的工作间隙上施加电压的电源，用于检测工作间隙的间隙电压的间隙电压检测器，放电检测器，用于将表示放电的放电检测信号提供给门信号发生器。放电检测器包括：计数器，用于产生具有大于门信号频率的频率的采样时钟;以及比较器，用于接收间隙电压并确定间隙电压的下降大于每个中的指定电压差抽样时钟。响应于比较器的输出信号产生放电检测信号。

2. 发明申请

US20100090708A1 ELECTRIC DISCHARGE DETECTION METHOD AND ELECTRIC DISCHARGE MACHINING APPARATUS 有权
标题翻译：电动放电检测方法和电动放电加工设备
公开(公告)号：US20100090708A1
公开(公告)日：2010-04-15
申请号：US12532115
申请日：2008-03-24
申请人： Yuji Kaneko , Takenori Harada
发明人： Yuji Kaneko , Takenori Harada
IPC分类号： H01H31/12 , B23H1/02
CPC分类号： B23H1/022
摘要： An electric discharge machining apparatus having a gate signal generator for generating a gate signal, a power source for applying a voltage across a work gap formed between a tool electrode and a workpiece, a gap voltage detector for detecting a gap voltage of the work gap, an electric discharge detector for supplying an electric discharge detection signal representing electric discharge to the gate signal generator. The electric discharge detector includes a counter for generating a sample clock having a frequency greater than the frequency of the gate signal, and a comparator for receiving the gap voltage and determining that a fall in the gap voltage is larger than a specified voltage difference in each sample clock. The electric discharge detection signal is generated in response to an output signal of the comparator.
摘要翻译：一种放电加工装置，具有用于产生栅极信号的栅极信号发生器，用于在形成在工具电极和工件之间的工作间隙上施加电压的电源，用于检测工作间隙的间隙电压的间隙电压检测器，放电检测器，用于将表示放电的放电检测信号提供给门信号发生器。放电检测器包括：计数器，用于产生具有大于门信号频率的频率的采样时钟;以及比较器，用于接收间隙电压并确定间隙电压的下降大于每个中的指定电压差抽样时钟。响应于比较器的输出信号产生放电检测信号。

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