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公开(公告)号：US10406622B2
公开(公告)日：2019-09-10
申请号：US15113502
申请日：2015-02-09
Applicant: DAIHEN CORPORATION
Inventor： Akihiro Ide , Toshiyuki Tanaka
Abstract: There is provided an arc welding power supply. An output control unit outputs welding voltage and current in correspondence to each of a short-circuiting period and an arc period. A feeding control unit controls a feeding rate of a welding wire. A short-circuit forcibly generating period is provided between forward feeding acceleration and deceleration periods. In the short-circuit forcibly generating period, the feeding control unit increases the feeding rate with a change rate larger than a change rate during the forward feeding acceleration period and maintains a predetermined forward feeding peak value when the feeding rate reaches the peak value.
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公开(公告)号：US20190126378A1
公开(公告)日：2019-05-02
申请号：US16164908
申请日：2018-10-19
Applicant: DAIHEN Corporation
Inventor： Michitaka Todo , Masatoshi Ooie , Toshiyuki Tanaka , Ichiro Umezawa
Abstract: A non-consumable electrode arc-welding method is provided for causing a welding machine to output or stop a welding current in accordance with at least an ON state and an OFF state of a start signal. In the method, a start signal is switched between an ON state and an OFF state, thereby controlling the on/off operation of the welding machine. Further, an operation mode instruction signal is switched between a normal mode and an interval mode, thereby controlling the operation mode of the welding machine. When the operation mode instruction signal indicates the interval mode and also the start signal is in the ON state, the welding current is outputted in a welding current output period. Then, the output of the welding current is suspended in a welding current interval period successively following the welding current output period.
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公开(公告)号：US10376981B2
公开(公告)日：2019-08-13
申请号：US14330502
申请日：2014-07-14
Applicant: Daihen Corporation
Inventor： Toshiyuki Tanaka , Toshiaki Nakamata
Abstract: An arc welding power supply supplies power to a welding wire functioning as a discharge electrode to generate an arc from an electrode distal end of the welding wire and perform arc welding on a welded article. The arc welding power supply includes an output control unit that adjusts the power supplied to the welding wire to a power value suitable for arc welding. A feed control unit cyclically changes a feeding speed of the welding wire. The feeding speed includes a forward feeding speed and a rearward feeding speed. An amplitude control unit cyclically changes an amplitude of the feeding speed of the welding wire to cyclically vary an average arc length.
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Patent Agency Ranking
公开(公告)号：US20240418631A1
公开(公告)日：2024-12-19
申请号：US18744134
申请日：2024-06-14
Applicant: DAIHEN CORPORATION , OSAKA UNIVERSITY
Inventor： Seiya Nitta , Keiji Kadota , Toshiyuki Tanaka , Satoru Asai , Kazufumi Nomura
IPC: G01N21/17 , B23K31/12 , G01N33/2045 , G01N33/207
Abstract: A welding inspection method includes a step S102 of removing an impurity at a surface of a weld with a surface treatment apparatus, a step S110 of irradiating the surface of the weld from which the impurity has been removed with transmission laser light, a step S120 of detecting reflected ultrasound reflected by a lower surface of a base material, and a step S150 of determining whether or not there is an internal defect in the weld based on a result of detection of reflected ultrasound.
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公开(公告)号：US20240399488A1
公开(公告)日：2024-12-05
申请号：US18676462
申请日：2024-05-28
Applicant: OSAKA UNIVERSITY , DAIHEN CORPORATION
Inventor： Hidetoshi Fujii , Yoshiaki Morisada , Takumi Aibara , Takaaki Miyauchi , Tomoyuki Ueyama , Toshiyuki Tanaka
IPC: B23K11/11 , B23K11/30 , B23K103/00
Abstract: A solid state welding apparatus comprises a pair of compression bars, a pair of electrodes disposed around the pair of compression bars, respectively, and a controller. The controller controls the pair of compression bars to cause a first load to act on each of the first and second workpieces, subsequently controls the pair of compression bars to subject compressive force to load removal to cause a second load smaller than the first load to act on the first and second workpieces, and subsequently passes a current through the pair of electrodes to remove an impurity on a metal surface.
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公开(公告)号：US10391578B2
公开(公告)日：2019-08-27
申请号：US15303295
申请日：2015-04-27
Applicant: DAIHEN CORPORATION
Inventor： Toshiyuki Tanaka , Toshiaki Nakamata
Abstract: There is provided an arc welding control method. As to a feeding rate of a welding wire, a forward feeding period and a reverse feeding period are alternated cyclically to generate short-circuiting periods and arc periods. When a constriction of a droplet formed at the welding wire is detected during the short-circuiting period, a welding current is reduced to shift to the arc period. Sensitivity of the detection of constriction is changed according to a waveform parameter of the feeding rate.
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公开(公告)号：US11305367B2
公开(公告)日：2022-04-19
申请号：US16164908
申请日：2018-10-19
Applicant: DAIHEN Corporation
Inventor： Michitaka Todo , Masatoshi Ooie , Toshiyuki Tanaka , Ichiro Umezawa
Abstract: A non-consumable electrode arc-welding method is provided for causing a welding machine to output or stop a welding current in accordance with at least an ON state and an OFF state of a start signal. In the method, a start signal is switched between an ON state and an OFF state, thereby controlling the on/off operation of the welding machine. Further, an operation mode instruction signal is switched between a normal mode and an interval mode, thereby controlling the operation mode of the welding machine. When the operation mode instruction signal indicates the interval mode and also the start signal is in the ON state, the welding current is outputted in a welding current output period. Then, the output of the welding current is suspended in a welding current interval period successively following the welding current output period.
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8.发明申请公开(公告)号：US20150021307A1
公开(公告)日：2015-01-22
申请号：US14330502
申请日：2014-07-14
Applicant: Daihen Corporation
Inventor： Toshiyuki Tanaka , Toshiaki Nakamata
CPC classification number: B23K9/125 , B23K9/1006 , B23K9/1043 , B23K9/133
Abstract: An arc welding power supply supplies power to a welding wire functioning as a discharge electrode to generate an arc from an electrode distal end of the welding wire and perform arc welding on a welded article. The arc welding power supply includes an output control unit that adjusts the power supplied to the welding wire to a power value suitable for arc welding. A feed control unit cyclically changes a feeding speed of the welding wire. The feeding speed includes a forward feeding speed and a rearward feeding speed. An amplitude control unit cyclically changes an amplitude of the feeding speed of the welding wire to cyclically vary an average arc length.
Abstract translation: 电弧焊电源向作为放电电极的焊丝供电，从焊丝的电极末端产生电弧，并在焊接件上进行电弧焊接。 电弧焊电源包括输出控制单元，其将提供给焊丝的功率调整到适合于电弧焊接的功率值。 进给控制单元循环地改变焊丝的进给速度。 进给速度包括前进进给速度和向后进给速度。 振幅控制单元循环地改变焊丝的进给速度的幅度以循环地改变平均弧长。
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