Method for guiding arc by laser, and arc guiding welding and device by the method
    1.
    发明授权
    Method for guiding arc by laser, and arc guiding welding and device by the method 失效
    通过激光引导电弧的方法,以及通过该方法进行电弧引导焊接和装置

    公开(公告)号:US06596969B1

    公开(公告)日:2003-07-22

    申请号:US09700408

    申请日:2000-11-15

    IPC分类号: B23K909

    摘要: In an arc welding method and apparatus, a plasma (13) is generated at a welding intended position on a base material (2) by a laser (16) irradiated to the base material (2). When a discharge electrode (12) is at a minus potential, an arc discharge (4) takes place in the direction of the plasma (13) and is induced at a position irradiated with the laser (16). When the electrode (12) is at a plus potential, arc electrons are generated from a laser irradiated point and discharged to the electrode (12). When a voltage applied between the electrode (12) and the base material (2) is alternating, the polarities of the electrode (12) and the base material (2) alternately change so that the foregoing phenomena alternately occur. When the base material (2) is at a minus potential, an arc discharge (4) takes place from a laser spot. Also, in regard to the arc discharge (4), since the plasma (13) is generated by the laser (16), a stable arc discharge (4) can be generated irrespective of the state of the base material (2) or the state of the electrode (12).

    摘要翻译: 在电弧焊接方法和装置中,通过照射到基材(2)的激光(16)在基材(2)上的焊接目标位置处产生等离子体(13)。 当放电电极(12)处于负电位时,在等离子体(13)的方向上发生电弧放电(4),并且在被激光器(16)照射的位置处被感应。 当电极(12)处于正电位时,从激光照射点产生电弧电子并将其放电到电极(12)。 当施加在电极(12)和基材(2)之间的电压交替时,电极(12)和基材(2)的极性交替变化,从而交替发生上述现象。 当基材(2)处于负电位时,从激光点发生电弧放电(4)。 此外,关于电弧放电(4),由于等离子体(13)由激光器(16)产生,所以可以产生稳定的电弧放电(4),而不管基材(2)的状态如何 电极(12)的状态。

    Welding method, welding device, welded joint, and welded structure
    2.
    发明授权
    Welding method, welding device, welded joint, and welded structure 有权
    焊接方法,焊接装置,焊接接头和焊接结构

    公开(公告)号:US07005607B2

    公开(公告)日:2006-02-28

    申请号:US10468228

    申请日:2002-02-18

    IPC分类号: B23K9/12

    摘要: A welding method is disclosed for butt welding a first base material 1 and a second base material 2 with each other. To also permit stable and efficient formation of a bead in the form of a fillet weld on a back side of a groove by conducting arc welding from the side of the groove without arranging a bead beforehand on the back side of the groove, the first member 1, on which a root face 1a and a single groove face 1b have been formed, is brought at its root face 1a into contact with a flat surface 2a of the second base material 2. A welding wire 6 is arranged facing on the groove formed by the contact between the first base material 1 and the second base material 2. The first base material 1 and the second material 2 are caused to fuse at an area of contact between them by an arc from the welding wire 6. A melt, which has been formed by the fusion at the area of contact and the like, is forced out to the back side of the groove to form a bead B4 in the form of a fillet weld on the back side of the groove.

    摘要翻译: 公开了一种用于将第一基材1和第二基材2彼此对接焊接的焊接方法。 为了通过从槽侧进行电弧焊接,可以预先在槽的背面预先设置胎圈,从而能够稳定而有效地形成形成在槽的背面上的焊脚形状的胎圈,第一部件 如图1所示,在其表面1a上形成有根面1a和单个槽面1b已经被形成为与第二基材2的平坦表面2a接触。焊丝6面向 在由第一基材1和第二基材2之间的接触形成的槽上。第一基材1和第二材料2通过来自焊丝6的电弧在它们之间的接触区域熔合。 通过在接触区域等处的熔融形成的熔体被挤出到槽的后侧,以在槽的背面形成圆角焊接形式的焊道B 4。

    Laser processing apparatus, laser processing method and dam bar
processing method
    3.
    发明授权
    Laser processing apparatus, laser processing method and dam bar processing method 失效
    激光加工设备,激光加工方法和坝条加工方法

    公开(公告)号:US5763853A

    公开(公告)日:1998-06-09

    申请号:US557102

    申请日:1995-12-06

    IPC分类号: B23K26/03 B23K26/02

    摘要: Detecting light from a detecting light source (122) is irradiated to a workpiece (1) and the reflected light is detected by a photosensor (126). At the same time, light resulting from emission of plume produced upon laser processing is also detected by the photosensor (126). A laser controller (26) binary-codes a detection signal from the photosensor (126) to provide a rectangular wave signal (TP) and, based on the rectangular wave signal (TP), generates a trigger signal (TP.sub.2) for oscillating a processing laser beam. At this time, the trigger signal (TP.sub.2) is fed back to generate a gate signal (GP) and, based on the gate signal (GP), the detection signal resulted from the emission of the plume is omitted in the gate circuit (245) to produce a trigger signal (TP.sub.G). This trigger signal (TP.sub.G) is given with a delay time (T.sub.D) to produce a trigger signal (TP.sub.1). The above trigger signal (TP.sub.2) is generated in synch with the trigger signal (TP.sub.1). As a result, the laser processing is prevented from being applied unnecessarily based on the light generated upon the laser processing.

    摘要翻译: PCT No.PCT / JP95 / 00674 Sec。 371 1995年12月6日第 102(e)日期1995年12月6日PCT 1995年4月6日PCT PCT。 第WO95 / 29035号公报 1995年11月2日检测来自检测光源(122)的光被照射到工件(1),反射光由光电传感器(126)检测。 同时,由激光加工产生的羽流的发射产生的光也由光传感器(126)检测。 激光控制器(26)对来自光电传感器(126)的检测信号进行二进制编码以提供矩形波信号(TP),并且基于矩形波信号(TP)产生用于振荡处理的触发信号(TP2) 激光束。 此时,触发信号(TP2)被反馈以产生栅极信号(GP),并且基于栅极信号(GP),在栅极电路(245)中省略了由羽流的发射引起的检测信号 )以产生触发信号(TPG)。 该触发信号(TPG)具有延迟时间(TD)以产生触发信号(TP1)。 上述触发信号(TP2)与触发信号(TP1)同步产生。 结果,根据激光加工时产生的光,防止了不必要地施加激光加工。

    Lead frame processing method
    4.
    发明授权
    Lead frame processing method 失效
    引线框架处理方法

    公开(公告)号:US5548890A

    公开(公告)日:1996-08-27

    申请号:US553742

    申请日:1995-10-23

    摘要: In a method for forming a lead frame (1) from a metallic plate, a metallic plate (11) is first etched to form outer leads (4) and outer portions (3b) of inner leads of the lead frame (1). Inner portions (3a) of the inner leads (3) are then laser-cut under the condition that a joint portion (7) is left so as to interconnect the inner leads (3) at their distal ends. Mechanical surface treatment and chemical surface treatment are then carried out to remove dross (10), spatters (9) and oxide films deposited during the laser cutting. Inner areas of the inner leads (3) connected to respective terminals of a semiconductor chip are then plated with gold to form plated terminal portions (3A). Subsequently, the region of the lead frame other than the outer leads (4) is coated with a protective film for solder plating and the outer leads (4) are plated with solder. The joint portion (7) left at the distal ends of the inner leads (3) is then cut off by laser cutting so that the inner leads (3) are separated from one another, thereby forming a final lead frame pattern. The protective film for solder plating is then removed, followed by washing and drying. The inner leads (3) are prevented from being curved due to thermal deformations with the laser cutting, resulting in highly accurate processing.

    摘要翻译: 在从金属板形成引线框架(1)的方法中,首先蚀刻金属板(11)以形成引线框架(1)的内引线的外引线(4)和外部部分(3b)。 然后在留下接头部分(7)的条件下激光切割内部引线(3)的内部(3a),以使内部引线(3)在其远端相互连接。 然后进行机械表面处理和化学表面处理,以消除在激光切割期间沉积的浮渣(10),飞溅物(9)和氧化膜。 连接到半导体芯片的各个端子的内部引线(3)的内部区域然后用金镀以形成电镀端子部分(3A)。 随后,除了外引线(4)之外的引线框架的区域涂覆有用于焊接电镀的保护膜,并且外引线(4)镀有焊料。 然后通过激光切割将留在内引线(3)的远端的接合部(7)切断,使得内引线(3)彼此分离,从而形成最终引线框图案。 然后除去用于焊接电镀的保护膜,然后洗涤和干燥。 由于激光切割引起的热变形,内部引线(3)被防止弯曲,导致高精度的加工。

    Dam bar cutting apparatus and dam bar cutting method
    5.
    发明授权
    Dam bar cutting apparatus and dam bar cutting method 失效
    坝坝切割设备和坝条切割方法

    公开(公告)号:US5662822A

    公开(公告)日:1997-09-02

    申请号:US648026

    申请日:1996-05-14

    摘要: The array condition of leads (3) is detected by a photoelectric detector (41), the detection signal is subjected to signal processing to determine the timing to oscillate a pulsed laser beam, and a laser beam axis (13C) is relatively moved at a speed (v.sub.0) with a work table (21) while oscillating a pulsed laser beam (13A), thereby cutting a dam bar (5). At this time, the longitudinal size of a spot (13B) of the pulsed laser beam (13A) is adjusted to be twice or more the width of the dam bar (5) by a longitudinal beam transformer (11a), the transverse size of the spot 13B is adjusted to be not less than 1/2 but not more than 4/5 of the length of the dam bar (5) by a transverse beam transformer (11b), and a beam rotator (11c) is appropriately operated to make the longitudinal direction of the spot (13B) substantially aligned with the longitudinal direction of the lead (3) so that the spot (13B) lies across the width (W.sub.1) of the dam bar (5). As a result, the configuration after cutting the dam bar (5) becomes highly accurate and satisfactory.

    摘要翻译: PCT No.PCT / JP95 / 02064 Sec。 371日期:1996年5月14日 102(e)日期1996年5月14日PCT提交1995年10月9日PCT公布。 公开号WO96 / 12300 PCT 日期:1996年04月25日光电检测器(41)检测引线(3)的阵列条件,检测信号进行信号处理,确定振荡脉冲激光束的时序,激光束轴(13C) 在振荡脉冲激光束(13A)的同时用工作台(21)以速度(v0)相对移动,从而切割堤坝(5)。 此时,通过纵向光束变换器(11a)将脉冲激光束(13A)的光点(13B)的纵向尺寸调整为阻挡条(5)的宽度的两倍或更多,横向尺寸 通过横梁变压器(11b)将点13B调节为不小于+ E,fra 1/2 + EE但不大于+ E,挡块(5)的长度的4/5 + EE。 ,并且适当地操作光束旋转器(11c),使得光斑(13B)的纵向方向基本上与引线(3)的纵向方向对齐,使得光斑(13B)横跨宽度(W1) 坝坝(5)。 结果,切断坝条(5)后的结构变得高精度和令人满意。

    Lead frame fabricating method and lead frame fabricating apparatus
    6.
    发明授权
    Lead frame fabricating method and lead frame fabricating apparatus 失效
    引线框架制造方法和引线框架制造装置

    公开(公告)号:US5632083A

    公开(公告)日:1997-05-27

    申请号:US411839

    申请日:1995-04-03

    摘要: A lead frame fabricating method and a lead frame fabricating apparatus are provided which can easily fabricate lead frames of fine pattern at a high speed, can improve dimensional accuracy and quality of the lead frames after the fabrication, and can realize mass-production at a lower cost. To this end, when cutting a metal plate 1101 by irradiation of a laser beam, a laser beam 1011 emitted in the form of pulses and having a circular section is converted by a beam section transformer 1020 into a laser beam 1012 having an elongate elliptic section. The section of the laser beam 1012 is rotated on its optical axis by a beam rotating device 1030 so that the lengthwise direction of the section of the laser beam 1012 is coincident with the lengthwise direction of each of inner leads 1013. An optical axis of a laser beam 1015 is revolved along each of concentric paths 161 to 174 around the original optical axis given when the laser beam 1011 is emitted. Alternatively, a laser beam 3011 emitted in the form of pulses and having a circular section is converted by a beam section transformer 3020 into a laser beam 3012 having an elongate elliptic section. The section of the laser beam 3012 is rotated on its optical axis by a beam rotating device 3030 so that the lengthwise direction of the section of the laser beam 3012 is coincident with the lengthwise direction of each of the inner leads 1013.

    摘要翻译: PCT No.PCT / JP94 / 01292 Sec。 371日期:1995年4月3日 102(e)日期1995年4月3日PCT 1994年8月4日提交了一种引线框架制造方法和引线框架制造装置,其可以容易地以高速制造精细图案的引线框架,可以提高尺寸精度和质量 制造后的引线框架,可以以较低的成本实现批量生产。 为此,当通过激光束的照射来切割金属板1101时,以脉冲形式发射并具有圆形截面的激光束1011由光束截面变换器1020转换成具有细长椭圆形截面的激光束1012 。 激光束1012的部分通过光束旋转装置1030在其光轴上旋转,使得激光束1012的截面的长度方向与内引线1013的纵向方向一致。 激光束1015沿着沿着发射激光束1011时给出的原始光轴的每个同心路径161至174旋转。 或者,以脉冲形式发射并具有圆形截面的激光束3011由光束截面变换器3020转换成具有细长椭圆形截面的激光束3012。 激光束3012的部分通过光束旋转装置3030在其光轴上旋转,使得激光束3012的截面的长度方向与每个内引线1013的长度方向一致。

    Metal plate processing method, lead frame processing method, lead frame,
semiconductor device manufacturing method, and semiconductor device
    7.
    发明授权
    Metal plate processing method, lead frame processing method, lead frame, semiconductor device manufacturing method, and semiconductor device 失效
    金属板加工方法,引线框架加工方法,引线框架,半导体器件制造方法和半导体器件

    公开(公告)号:US5580466A

    公开(公告)日:1996-12-03

    申请号:US343446

    申请日:1994-11-23

    摘要: An object of the present invention is to, in methods of processing metal plates and lead frames, enable workpieces to be finely processed into a satisfactory configuration with high dimensional accuracy without suffering the effect of heat produced under irradiation of a laser beam. According to the present invention, resist films (1) are first coated on both surfaces of a metal plate (1), and a laser beam (202) is then irradiated to the metal plate (101) from surfaces of the resist films (1) to form a multiplicity of discontinuous through holes (3) in line, while leaving joints (6) as not-processed portions between the adjacent through holes (3). Openings (2) formed in each resist film (1) by the laser cutting are joined with each other to serve as an etching pattern. Next, etching is carried out to etch side walls (6) defining the through holes and also to remove the joints (6), thereby interconnecting the through holes (3) formed in line to form a gap (303a) of a desired shape. Instead of forming the through holes (3) and the joints (6) in the metal plate (101) by irradiating the laser beam (202), non-penetrating cut grooves (51) may be formed in the metal plate (101) with a joint (52) left as a non-processed portion at the bottoms of the cut grooves, followed by removing the joint by etching.

    摘要翻译: PCT No.PCT / JP94 / 00550 371日期1994年11月23日 102(e)1994年11月23日PCT PCT 1994年4月4日PCT公布。 出版物WO94 / 24705 日期为1994年10月27日本发明的目的在于,在金属板和引线框架的加工方法中,能够将工件精细加工成具有高尺寸精度的令人满意的结构,而不会受到激光照射下产生的热的影响 光束。 根据本发明,首先在金属板(1)的两个表面上涂覆抗蚀剂膜(1),然后从抗蚀膜(1)的表面向金属板(101)照射激光束 )以在相邻的通孔(3)之间留下作为未处理部分的接头(6)的同时形成多个不连续的通孔(3)。 通过激光切割在每个抗蚀剂膜(1)中形成的开口(2)彼此接合以用作蚀刻图案。 接下来,进行蚀刻以蚀刻限定通孔的侧壁(6)并且还去除接头(6),从而将形成在一起的通孔(3)互相连接,形成所需形状的间隙(303a)。 代替通过照射激光束(202)在金属板(101)中形成通孔(3)和接头(6),可以在金属板(101)中形成非穿透切割槽(51) 在切割槽的底部留下作为未加工部分的接头(52),然后通过蚀刻去除接头。

    SLIDING BEARING AND CONSTRUCTION MACHINE PROVIDED WITH SAME
    9.
    发明申请
    SLIDING BEARING AND CONSTRUCTION MACHINE PROVIDED WITH SAME 有权
    滑动轴承和结构机械提供

    公开(公告)号:US20130279835A1

    公开(公告)日:2013-10-24

    申请号:US13978294

    申请日:2011-12-05

    摘要: Provided are a novel sliding bearing and a construction machine provided with same, the sliding bearing being capable of maintaining an excellent sliding performance over a long period of time and exhibiting an excellent strength. A sliding bearing (100) includes at least a brush (10) and a shaft part (20), the shaft part (20) being provided with a grease feeding pathway (70) for feeding grease (G) from the exterior to the sliding surfaces of the shaft part (20) and the bush (10), the bush (10) being formed from a porous sintered metal, and a decomposition catalyst (S) being adhered to the sliding surface of the bush (10).

    摘要翻译: 提供一种新颖的滑动轴承和具有该滑动轴承的施工机械,该滑动轴承能够在长时间内保持优异的滑动性能并且具有优异的强度。 滑动轴承(100)至少包括刷子(10)和轴部件(20),所述轴部件(20)设置有用于从外部向滑动件(G)供给润滑脂(G)的润滑脂供给通道(70) 轴部(20)和衬套(10)的表面,衬套(10)由多孔烧结金属形成,分解催化剂(S)粘附到衬套(10)的滑动表面。