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1.发明申请公开(公告)号：US20180304397A1
公开(公告)日：2018-10-25
申请号：US15644819
申请日：2017-07-09
发明人： Lanmin NIE , Jihua ZHAO
CPC分类号： B23K11/241 , B23K11/115 , B23K11/185 , B23K11/3054 , B23K2103/10
摘要： The present invention relates to a direct-contact type alternating current (AC) trapezoidal wave aluminum resistance welding process method. AC trapezoidal wave inverter controller capable of controlling a positive and negative half-wave current rising rate, and an AC transformer (no rectifier or silicon-controlled rectifier on a secondary coil of the transformer) with an output voltage of 10-30V, a peak current of 32-70 kiloampere and a frequency of 25-80 Hz are included. The inverter controller and the AC transformer are connected by means of a conductor, a welding electrode, a pressurization mechanism and a cooling system to form resistance welding equipment to enable the equipment to output positive and negative alternating trapezoidal wave current on two sides of the electrode when a workpiece is pressurized and welded and to perform welding according to a specified duty ratio, welding current, frequencies, welding cycle number and welding pressure. Practice proves that the method has the advantages that 50-150 welding spots can be welded while grinding the electrode once each time, service life of the electrode is prolonged by 2-5 times, production efficiency and welding quality are greatly improved, and production cost is reduced, thereby realizing a qualitative leap in aluminum and aluminum alloy resistance welding processes.
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公开(公告)号：US20180071856A1
公开(公告)日：2018-03-15
申请号：US15813887
申请日：2017-11-15
CPC分类号： B23K11/241 , B23K11/115
摘要： A programmable polarity module that permits rapid on-demand control of the polarities assigned to the welding electrodes retained on a welding gun is disclosed. The programmable polarity module is electrically connectable to the welding gun and a direct current power supply unit to provide direct current to the welding electrodes for exchange during spot welding. A first interchangeable polarity output lug and a second interchangeable polarity output lug of the programmable polarity module permit the polarities of the welding electrodes to be switched without having to electrically disconnect the module from the welding gun.
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公开(公告)号：US09908199B2
公开(公告)日：2018-03-06
申请号：US14174339
申请日：2014-02-06
CPC分类号： B23K11/241 , B23K11/115
摘要： A programmable polarity module that permits rapid on-demand control of the polarities assigned to the welding electrodes retained on a welding gun is disclosed. The programmable polarity module is electrically connectable to the welding gun and a direct current power supply unit to provide direct current to the welding electrodes for exchange during spot welding. A first interchangeable polarity output lug and a second interchangeable polarity output lug of the programmable polarity module permit the polarities of the welding electrodes to be switched without having to electrically disconnect the module from the welding gun.
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公开(公告)号：US20160228973A1
公开(公告)日：2016-08-11
申请号：US15025459
申请日：2014-12-18
CPC分类号： B23K11/24 , B23K11/11 , B23K11/115 , B23K11/16 , B23K11/163 , B23K11/241
摘要： By superposing a plurality of steel sheets including a high tensile steel sheet and performing pulsation conduction by an inverter DC type spot welding power supply and controlling the conduction time of the current pulses, intervals of the current pulses, that is, conduction idle time, and weld current applied at the current pulses in a variable manner, the optimum weld conditions are obtained. For resistance spot welding of the hot stamped steel sheet, resistance spot welding with a minimum weld current of a second pulsation step higher than the maximum weld current at a first pulsation step is used to suppress the occurrence of outer spatter and inner spatter and secure a broad suitable current range even if using an inverter DC power supply.
摘要翻译： 通过叠加包括高强度钢板的多个钢板并通过逆变器DC型点焊电源进行脉动导通，并控制电流脉冲的导通时间，电流脉冲的间隔，即导通空闲时间，以及 以可变方式在电流脉冲下施加的焊接电流，获得最佳焊接条件。 对于热冲压钢板的电阻点焊，使用在第一脉动阶段比第一脉动步骤的最大焊接电流高的第二脉动步骤的最小焊接电流的电阻点焊来抑制外部飞溅物和内部飞溅物的发生，并确保 即使使用逆变器直流电源，电流范围宽。
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公开(公告)号：US09302342B2
公开(公告)日：2016-04-05
申请号：US13910671
申请日：2013-06-05
申请人： Robert Bosch GmbH
发明人： Reinhard Scholz , Alfred Punzet
IPC分类号： B23K11/24
CPC分类号： B23K11/241 , B23K11/24 , Y02P70/181
摘要： The disclosure describes a system that uses an active filter connected to phases of a three-phase power grid in parallel with a resistance welding apparatus in order to bring an input current of a welding converter closer to a sinusoidal shape.
摘要翻译： 本公开描述了一种使用连接到三相电网的相位的有源滤波器与电阻焊接装置并联的系统，以使焊接转换器的输入电流更接近正弦形状。
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6.发明申请公开(公告)号：US20140305912A1
公开(公告)日：2014-10-16
申请号：US14351926
申请日：2012-10-17
发明人： Koichi Taniguchi , Yasuaki Okita , Rinsei Ikeda
IPC分类号： B23K11/11
CPC分类号： B23K11/115 , B23K11/24 , B23K11/241 , B23K11/257
摘要： Provided is a method of resistance spot welding of welding a sheet set including a high strength steel sheet with which a high joint strength can be achieved even for a high Ceq material. A method of resistance spot welding a sheet set of two or more lapped steel sheets by weld the sheet set while clamping and pressing the sheet set between a pair of welding electrodes includes a first welding step of applying an weld current Im (kA) and forming a nugget having a nugget diameter d (mm) that satisfies the following inequality (1); a cooling step, subsequent to the foregoing first welding, of cooling the sheet set while continuing to press the sheet set; and a second welding step of performing two-step welding, 3×√tm≦d≦6×√tm (1), where tm is the thickness (mm) of the thinnest one of the foregoing two or more steel sheets.
摘要翻译： 提供一种焊接包含高强度钢板的片组的电阻点焊方法，即使对于高Ceq材料也可以实现高接合强度。 通过在将一组焊接电极夹持并压制片材组之间焊接片材组而对两个或更多个重叠的钢板进行电阻点焊的方法包括施加焊接电流Im（kA）和成形的第一焊接步骤 具有满足以下不等式（1）的熔核直径d（mm）的熔核; 在上述第一焊接之后的冷却步骤，在继续按压片材组件的同时冷却片材组; 以及进行两步焊接的第二焊接工序，3×√tm＆nlE; d＆nlE; 6×√tm（1），其中tm是上述两个或更多个钢板中最薄的一个的厚度（mm）。
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公开(公告)号：US20140301122A1
公开(公告)日：2014-10-09
申请号：US14354987
申请日：2012-10-31
CPC分类号： H02M7/003 , B23K11/241 , H01F27/10 , H01F38/085 , H02M7/12 , Y02P70/181
摘要： The invention relates to a power source (10) for providing a direct current, comprising a heavy-current transformer (12) with at least one primary winding (13) and at least one secondary winding (14) with center tapping, a synchronous rectifier (16) connected with the at least one secondary winding (14) of the heavy-current transformer (12) and comprising circuit elements (24), and a circuit (17) for actuating the circuit elements (24) of the synchronous rectifier (16), and a supply circuit (48) for supplying the synchronous rectifier (16) and the actuation circuit (17), and to a method for cooling such a power source (10). For reduction of losses and improvement of efficiency, the synchronous rectifier (16) and the actuation circuit (17) and the supply circuit (48) thereof are integrated in the heavy-current transformer (12).
摘要翻译： 本发明涉及一种用于提供直流电流的电源（10），其包括具有至少一个初级绕组（13）的大电流变压器（12）和具有中心抽头的至少一个次级绕组（14），同步整流器 （16），与所述大电流互感器（12）的所述至少一个次级绕组（14）连接并且包括电路元件（24）以及用于致动所述同步整流器的电路元件（24）的电路（17） 16）和用于供给同步整流器（16）和驱动电路（17）的供电电路（48），以及用于冷却这样的电源（10）的方法。 为了减少损耗和提高效率，同步整流器（16）和致动电路（17）及其供电电路（48）集成在大电流互感器（12）中。
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公开(公告)号：US20130146574A1
公开(公告)日：2013-06-13
申请号：US13707936
申请日：2012-12-07
申请人： KUKA ROBOTER GMBH
发明人： Tanja Birner-Such , Simon Dietrich
IPC分类号： B23K9/28
CPC分类号： B23K9/28 , B23K11/115 , B23K11/241 , B23K11/256 , Y10S901/02 , Y10S901/42
摘要： The invention relates to a welding robot for resistance welding, which exhibits a welding tongs (21), a welding current generator (1) connected to the welding electrodes (24, 25) of the welding tongs (21), for supplying the welding electrodes (24, 25) with electric energy during the resistance welding, and an industrial robot. The industrial robot comprises a robot arm (2) and a robot control device (9) for moving the robot arm (2). The welding tongs (21) is connected to the robot arm (2) and the robot control device (9) is connected to the welding current generator (1) and a tongs drive (26, 27) of the welding tongs (21).
摘要翻译： 本发明涉及一种用于电阻焊接的焊接机器人，其具有焊钳（21），与焊钳（21）的焊接电极（24,25）连接的焊接电流发生器（1），用于供给焊接电极 （24,25）在电阻焊接期间具有电能，以及工业机器人。 工业机器人包括机器人臂（2）和用于移动机器人臂（2）的机器人控制装置（9）。 焊钳（21）与机械臂（2）连接，机器人控制装置（9）与焊钳（1）连接，焊钳（21）的夹钳驱动（26,27）。
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9.发明授权Methods and systems for resistance spot welding using direct current micro pulses 有权使用直流微脉冲进行电阻点焊的方法和系统公开(公告)号：US08278598B2
公开(公告)日：2012-10-02
申请号：US12726450
申请日：2010-03-18
申请人： Wenkao Hou
发明人： Wenkao Hou
IPC分类号： B23K9/10
CPC分类号： B23K11/241 , B23K11/115 , B23K11/24
摘要： Methods and systems for resistance spot welding using direct current micro pulses are described. One described method comprises comprising forming a weld joint by applying a plurality of direct current micro pulses to at least two pieces of materials through a first electrode and a second electrode.
摘要翻译： 描述了使用直流微脉冲进行电阻点焊的方法和系统。 一种描述的方法包括通过将多条直流微脉冲施加到至少两片材料通过第一电极和第二电极来形成焊接接头。
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公开(公告)号：US20070182420A1
公开(公告)日：2007-08-09
申请号：US11517687
申请日：2006-09-08
申请人： Paul Buda
发明人： Paul Buda
IPC分类号： G01R31/08
CPC分类号： B23K11/241 , B23K11/252 , B23K11/257 , B23K11/258
摘要： A method and system for estimating a driving point voltage of a resistance weld system. The method includes periodically sampling a supplied voltage and a supplied current of a system to obtain a plurality of sets of a sampled voltage value and a sampled current value. The sampled values are used for creating a volt time area of the sampled voltage, a current time area of the sampled current, and a current difference time area of the sampled current. The method further includes creating an estimated line resistance and an estimated line reactance of the system based on the first set of a sampled voltage value and a sampled current value and the second set of a sampled voltage value and a sampled current value. The volt time area, current time area, current difference time area, line resistance and line impedance are used for creating a driving point voltage area or waveform. The system includes circuitry for implementing the method for a resistance weld control.
摘要翻译： 一种用于估计电阻焊接系统的驱动点电压的方法和系统。 该方法包括周期性地对提供的电压和系统的供电电流进行采样以获得多组采样电压值和采样电流值。 采样值用于产生采样电压的伏特时间区域，采样电流的当前时间区域和采样电流的电流差时间区域。 该方法还包括基于采样电压值和采样电流值的第一组以及采样电压值和采样电流值的第二组建立系统的估计线路电阻和估计线路电抗。 电压时间区域，当前时间区域，电流差时间区域，线路电阻和线路阻抗用于创建驱动点电压区域或波形。 该系统包括用于实现电阻焊接控制方法的电路。
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