专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS61111821A Power-source apparatus for spark erosion machining 失效
标题翻译：用于火花腐蚀加工的电源设备
公开(公告)号：JPS61111821A
公开(公告)日：1986-05-29
申请号：JP23232284
申请日：1984-11-06
申请人： Hitachi Seiko Ltd
发明人： YAMAYA MASATOSHI , KANNO TORAO , ARAYA SHIZUO , IKEGAMI HITOSHI
IPC分类号： B23H1/02 , G05F1/02
CPC分类号： B23H1/026
摘要： PURPOSE:To prevent the breakage of a switching element and the bad influence to other elements due to the breakage by installing at least one among an eddy-current detecting means for the switching elements connected in parallel and a means for observing the state between the current input and output terminals of the eddy-current detecting means and the switching elements. CONSTITUTION:When short-circuit breakage is generated between a drain electrode and a source electrode in a transistor Qm1, an eddy current flows in a block B1. Said eddy current is detected by an alarm type fuse F1, which is molten to output an alarm signal, and switch S1 is opened by the alarm signal, and spark erosion work is suspended, and the bad influence for others is prevented. When the short-circuit trouble is generated between the drain and the source of other transistor Qm2 or Qmn, similar operation is carried-out. Thus, the breakage of other transistors and the bad influences for other circuit elements can be eliminated.
摘要翻译：目的：为了防止开关元件的损坏以及由于在并联连接的开关元件的涡电流检测装置中安装至少一个而导致的断线造成的其他元件的不良影响，以及用于观察电流涡电流检测装置和开关元件的输入和输出端子。构成：在晶体管Qm1的漏电极和源电极之间产生短路断线时，在块B1中流动涡电流。通过报警式熔断器F1检测出所述涡电流，该熔断器F1熔化以输出报警信号，并且通过报警信号使开关S1打开，并且防止火花腐蚀作业，并且防止对其他的不良影响。当在其他晶体管Qm2或Qmn的漏极和源极之间产生短路故障时，执行类似的操作。因此，可以消除其他晶体管的损坏和对其它电路元件的不良影响。

2. 发明专利

JPS5964224A Electric discharge machine 失效
标题翻译：电动排料机
公开(公告)号：JPS5964224A
公开(公告)日：1984-04-12
申请号：JP17458582
申请日：1982-10-06
申请人： Hitachi Seiko Ltd
发明人： YAMAYA MASATOSHI , WATANABE TADAO , IKEGAMI HITOSHI
IPC分类号： B23H1/02
CPC分类号： B23H1/022
摘要： PURPOSE:To stabilize electric discharge machining, by detecting the fluctuation of the voltage of a DC power source in a charging circuit for a capacitor provided in parallel with the spark gap, to change the switching conditions for a charging switch to keep the charging speed constant. CONSTITUTION:The terminal voltage of a capacitor 5 provided in parallel with a spark gap between an electrode 6 and a workpiece 7 is detected by a detection circuit. A switch 4 is controlled to keep the terminal voltage constant in charging. The fluctuation of the voltage of a DC power source 1b in a charging circuit is detected by a detection circuit 9 to change the switching conditions (on- off frequency, duty factor, etc.) for the switch 4 to compensate for the fluctuation of the voltage to keep the charging speed constant. Electric discharge pulses can thus be stabilized without stabilizing the DC power.
摘要翻译：目的：为了稳定放电加工，通过检测与火花隙并联设置的电容器的充电电路中的直流电源的电压波动，改变充电开关的开关条件，使充电速度保持恒定。构成：通过检测电路来检测与电极6和工件7之间的火花间隙平行设置的电容器5的端子电压。控制开关4以在充电中保持端子电压恒定。充电电路中的直流电源1b的电压的波动由检测电路9检测，以改变开关4的开关条件（截止频率，占空因数等），以补偿开关4的波动电压保持充电速度恒定。因此，可以稳定放电脉冲而不使DC功率稳定。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式