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1. 发明公开

EP1016481A1 CONTROL DEVICE FOR BORING MACHINE 失效
标题翻译： KONTROLLVORRICHTUNGFÜRBOHRMASCHINE
公开(公告)号：EP1016481A1
公开(公告)日：2000-07-05
申请号：EP97907367.3
申请日：1997-03-18
申请人： NITTO KOHKI CO., LTD. , Murakami, Keiichi , Shoji, Michihiro
发明人： MURAKAMI, Keiichi , SHOJI, Michihiro
IPC分类号： B23B45/14
CPC分类号： H02P25/14 , B25H1/0071 , H02H7/0859
摘要： The operation of an electric drill is inhibited when it is interrupted by an abrupt fault such as power failure and then the fault is recovered, or when the coil of an electromagnet has a trouble such as disconnection.
After the fault is eliminated with a power switch 50 remaining closed for energizing the electromagnet and the electric drill, a photocoupler 38 turns on a thyristor 31 to disable the conduction of a transistor 35. As the result, a drill motor 16 will not start before the magnetization of the electromagnet. The trouble in the coil 27 is detected by a potential examining circuit 30 measuring a potential difference across a resistor 31. The detection of the trouble causes the thyristor 31 to interrupt the conduction of the transistor 35. Accordingly, the electric drill will not start again unless it is securely anchored by the electromagnet.
摘要翻译：当电力故障等突然故障中断，故障恢复，电磁铁线圈等断线等故障时，电钻的动作被禁止。在功率开关50保持闭合以使电磁体和电钻激励之后，故障消除之后，光电耦合器38接通晶闸管31以禁止晶体管35的导通。结果，钻机电机16将不会在之前启动电磁铁的磁化。线圈27中的故障由电位检测电路30检测，电位检测电路30测量电阻31两端的电位差。故障的检测导致晶闸管31中断晶体管35的导通。因此，电钻将不再起动除非它被电磁铁牢固地固定。

2. 发明申请

WO1997045252A1 CONTROL DEVICE FOR HYDRAULICALLY DRIVEN TOOL 审中-公开
标题翻译：液压驱动工具控制装置
公开(公告)号：WO1997045252A1
公开(公告)日：1997-12-04
申请号：PCT/JP1997000879
申请日：1997-03-18
申请人： NITTO KOHKI CO., LTD. , SHIMADA, Keisuke , SHOJI, Michihiro
发明人： NITTO KOHKI CO., LTD.
IPC分类号： B30B15/18
CPC分类号： F15B21/087 , B30B15/16
摘要： When a start switch (SW3) is depressed, a one-shot multivibrator circuit (15) is actuated to output one pulse. When the pulse enters a self-holding circuit (16), the self-holding circuit (16) is self-held to output an H-level signal until reset. As a result, a transistor (17) is turned on to actuate a relay (R1) for lowering a ram. When the ram reaches the lower limit position, a lower limit switch (LS4) is opened, so that a signal from a one-shot multivibrator circuit (18) causes a self holding circuit (21) to self-hold an H-level signal. The signal is delayed by a delay circuit (22) to turn a transistor (23) on. Therefore, a relay (R2) for raising the ram is actuated. Restarting will not be effected due to the operation of the one-shot multivibrator circuit (15) even when the start switch is kept depressed. Also, the service life of a valve changeover mechanism can be extended owing to the operation of the delay circuit (22). Further, erroneous operations can be prevented by operations of a delay circuit (19) and an AND circuit (24) even when the lower limit switch (LS4) chatters.
摘要翻译：当启动开关（SW3）被按下时，单稳态多谐振荡器电路（15）被致动以输出一个脉冲。当脉冲进入自保持电路（16）时，自保持电路（16）自我保持以输出H电平信号直到复位。结果，晶体管（17）导通以致动用于降低压头的继电器（R1）。当柱塞达到下限位置时，下限开关（LS4）打开，使得来自单稳多谐振荡器电路（18）的信号使自保持电路（21）自我保持H电平信号。信号由延迟电路（22）延迟以使晶体管（23）导通。因此，用于升高冲头的继电器（R2）被致动。即使启动开关保持按压，由于单稳态多谐振荡器电路（15）的操作也不会重新启动。此外，由于延迟电路（22）的操作，可以延长阀切换机构的使用寿命。此外，即使下限开关（LS4）颤动，也可以通过延迟电路（19）和AND电路（24）的操作来防止错误的操作。

3. 发明申请

WO1997045222A1 CONTROL DEVICE FOR BORING MACHINE 审中-公开
标题翻译：镗床控制装置
公开(公告)号：WO1997045222A1
公开(公告)日：1997-12-04
申请号：PCT/JP1997000878
申请日：1997-03-18
申请人： NITTO KOHKI CO., LTD. , MURAKAMI, Keiichi , SHOJI, Michihiro
发明人： NITTO KOHKI CO., LTD.
IPC分类号： B23B45/14
CPC分类号： H02P25/14 , B25H1/0071 , H02H7/0859
摘要： An electric drill is prevented from operating when failure of electric power during a drilling operation is restored to normal and when breaking of a coil in an electromagnet occurs. When failure of electric power is restored to normal in a state, in which a switch (50) is switched so as to energize an electromagnet and an electric drill, a photocoupler (38) operates to actuate a thyristor (31) and inhibit an on-operation of a transistor (35). As a result, a motor (16) of the electril drill will not operate before the electromagnet does. Also, abnormality of a coil (27) is judged on the basis of that abnormality of electric potential across a resistor (28), which is detected by a potential difference judging circuit (30). When abnormality is detected, the thyristor (31) is actuated and on-operation of the transistor (35) is inhibited. As a result, the electric drill will not operate when its operation is not permitted by the electromagnet.
摘要翻译：当钻孔操作中的电力故障恢复正常并且发生电磁铁中的线圈断裂时，防止电钻操作。在开关（50）被切换以使电磁铁和电钻通电的状态下，电力恢复正常的情况下，光电耦合器（38）操作以致动晶闸管（31）并抑制导通操作晶体管（35）。结果，电动钻机的电动机（16）将不会在电磁铁之前运行。此外，基于由电位差判定电路（30）检测的电阻（28）两端的电位异常来判断线圈（27）的异常。当检测到异常时，晶闸管（31）被致动并且晶体管（35）的开启操作被禁止。结果，当电动机不允许其操作时，电钻将不工作。

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