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41. 发明授权

US5495091A Pulse welding apparatus 失效
标题翻译：脉冲焊接设备
公开(公告)号：US5495091A
公开(公告)日：1996-02-27
申请号：US279069
申请日：1994-07-22
申请人： Yoichiro Tabata , Shigeo Ueguri , Yoshihiro Ueda , Masanori Mizuno , Yoshiaki Kato , Osamu Nagano
发明人： Yoichiro Tabata , Shigeo Ueguri , Yoshihiro Ueda , Masanori Mizuno , Yoshiaki Kato , Osamu Nagano
IPC分类号： B23K9/09 , G05F1/08
CPC分类号： B23K9/092 , B23K9/093 , G05F1/08
摘要： In pulse welding apparatus of arc welding or short-circuit transfer type arc welding in which a pulse discharge created on the tip of a wire electrode is utilized to perform welding, when a molten droplet produced on the tip of wire electrode is late to separate from the wire due to variations of welding conditions and external disturbances. The wire-supplying speed at which the wire is supplied to the weld zone changes. This causes undercut, i.e., a defect in welding bead-shape that presents adverse effect to welding quality. To prevent this problem, pulse current supplied to the base metal is divided into a plurality of pulse groups and the average current reaches the maximum peak value at a predetermined time after beginning of outputting the pulses, and the group of pulse currents is of a hill-shape in its envelope in accordance with the separation phenomenon of molten droplet, and the group of pulse currents is arranged to have different pulse period, pulse width, and pulse interval. In the sort-circuiting arc welding, the short-circuit and arc are instantly controlled in accordance with the detected arc length or wire-supplying speed.
摘要翻译：在电弧焊接或短路转移型电弧焊接的脉冲焊接装置中，其中利用线电极的尖端产生的脉冲放电进行焊接，当在线电极的尖端上产生的熔融液滴迟到时，由于焊接条件和外部干扰的变化引起的电线。将焊丝供给到焊接区域的焊丝供给速度发生变化。这导致底切，即焊接珠形状的缺陷，其对焊接质量产生不利影响。为了防止这种问题，提供给母材的脉冲电流被分成多个脉冲组，并且在开始输出脉冲之后的预定时间内平均电流达到最大峰值，并且脉冲电流组是小山根据熔滴的分离现象在其信封中设置，并且脉冲电流组被布置为具有不同的脉冲周期，脉冲宽度和脉冲间隔。在分选电弧焊接中，短路和电弧根据检测到的电弧长度或电线供电速度立即进行控制。

42. 发明授权

US5416299A Pulse welding apparatus 失效
标题翻译：脉冲焊接设备
公开(公告)号：US5416299A
公开(公告)日：1995-05-16
申请号：US194743
申请日：1994-02-09
申请人： Yoichiro Tabata , Shigeo Ueguri , Yoshihiro Ueda , Masanori Mizuno , Yoshiaki Katou , Osamu Nagano
发明人： Yoichiro Tabata , Shigeo Ueguri , Yoshihiro Ueda , Masanori Mizuno , Yoshiaki Katou , Osamu Nagano
IPC分类号： B23K9/073 , B23K9/09 , B23K9/095 , B23K9/10 , G05F1/08
CPC分类号： B23K9/1062 , B23K9/0734 , B23K9/092 , B23K9/0953 , G05F1/08
摘要： A pulse welding apparatus using a pulse discharge such as a pulse arc welding apparatus and a short-circuit transfer arc welding apparatus. A pulse current waveform control circuit, which controls the pulse arc current so that a desired pulse arc current is supplied to the arc welding power supply for outputting the pulse arc current to the welding load unit, is constructed such that the optimum welding operation may be performed without having to adjust circuit components and modify circuit design. The pulse current waveform control circuit is in the form of a microcomputerized digital circuit which operates under a program to provide a desired pulse arc current. A modification of the program can provide any desired pulse arc currents without changing circuits. The optimum welding current waveform parameters or a target arc length signal is learned in the first welding stage and stored into a memory. An arc length feedback control or a current waveform control is performed under the control of program on the basis of the optimum welding current waveform parameters or the target arc length signal so as to control the faulty separation of globules when magnetic blow occurs and so as to reduce the variation of arc length due to external disturbances occurring at the welding torch so that improved welding quality is ensured under various environment.
摘要翻译：使用脉冲放电的脉冲焊接装置，例如脉冲电弧焊接装置和短路转移电弧焊接装置。控制脉冲电弧电流的脉冲电流波形控制电路被构造为使得最佳焊接操作可以是最佳焊接操作，该脉冲电流波形控制电路控制脉冲电弧电流，使得向焊接电源提供期望的脉冲电弧电流以向焊接负载单元输出脉冲电弧电流执行而不必调整电路组件并修改电路设计。脉冲电流波形控制电路是在程序下操作以提供期望的脉冲电弧电流的微计算机数字电路的形式。该程序的修改可以提供任何期望的脉冲电弧电流而不改变电路。在第一焊接阶段学习最佳焊接电流波形参数或目标电弧长度信号，并存储到存储器中。基于最佳焊接电流波形参数或目标电弧长度信号，在程序控制下执行电弧长度反馈控制或电流波形控制，以便在发生磁场发生时控制球的故障分离，从而减少由焊枪发生的外部干扰引起的电弧长度的变化，从而确保在各种环境下提高焊接质量。

43. 发明授权

US5281791A Pulsed arc welding apparatus 失效
标题翻译：脉冲电弧焊机
公开(公告)号：US5281791A
公开(公告)日：1994-01-25
申请号：US601723
申请日：1990-12-27
申请人： Yoichiro Tabata , Shigeo Ueguri , Yoshihiro Ueda , Masanori Mizuno , Yoshiaki Katou , Osamu Nagano
发明人： Yoichiro Tabata , Shigeo Ueguri , Yoshihiro Ueda , Masanori Mizuno , Yoshiaki Katou , Osamu Nagano
IPC分类号： B23K9/073 , B23K9/09
CPC分类号： B23K9/0732 , B23K9/0735 , B23K9/092
摘要： A pulsed arc welding for carrying out arc welding or short-circuit transfer type arc welding by utilizing the pulsed discharge generated at the tip of a wire electrode. The propensity of wire electrode curvature causes irregular changes in the contact point of the wire electrode and variations in the arc length between the wire electrode tip and workpieces. Consequently, the invention detects arc voltage and current and checks the instantaneous variation in the arc length. The arc voltage value thus detected is converted to a reference arc voltage variable. Then the detected arc voltage value is compared with the reference value to compute a true arc length. A simulation arc length signal, which varies as welding proceeds, and a reference simulation welding current waveform are set, to compare the simulation arc length signal with the computed arc length signal. The reference simulation welding current waveform is corrected according to this difference signal to form and output a welding current waveform, which is controllable instantaneously to provide an ideal target arc length. Welding can be carried out with stability since the wire electrode is allowed to hold the simulation arc length during each welding process.
摘要翻译： PCT No.PCT / JP90 / 00245 Sec。 371日期1990年12月27日第 102（e）1990年12月27日PCT PCT 1990年2月27日提交PCT公布。公开号WO90 / 09857 1990年9月7日。一种脉冲弧焊，用于通过利用在线电极尖端产生的脉冲放电进行电弧焊或短路转移型电弧焊。线电极弯曲的倾向导致线电极的接触点的不规则变化和线电极末端和工件之间的电弧长度的变化。因此，本发明检测电弧电压和电流并检查电弧长度的瞬时变化。这样检测的电弧电压值被转换为参考电弧电压变量。然后将检测到的电弧电压值与参考值进行比较，以计算真正的电弧长度。设定随着焊接进行而变化的模拟弧长信号和参考模拟焊接电流波形，将模拟电弧长度信号与计算出的电弧长度信号进行比较。根据该差分信号对参考模拟焊接电流波形进行校正，形成并输出可瞬时控制的焊接电流波形，提供理想的目标电弧长度。可以稳定地进行焊接，因为允许线电极在每个焊接过程期间保持模拟电弧长度。

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