公开(公告)号：US4574176A

公开(公告)日：1986-03-04

申请号：US555641

申请日：1983-11-28

Applicant: Charles M. Sharp

Inventor： Charles M. Sharp

IPC: B23K26/00 ,  B23K15/00 ,  B23K26/04 ,  B23K26/20 ,  B23K26/26

CPC classification number: B23K15/0053 ,  B23K26/04 ,  B23K26/262 ,  B23K2201/06 ,  B23K2201/125

Abstract: A method and apparatus for high speed welding are disclosed wherein a continuous weld is formed at high speed along a member with a plurality of overlapping welds formed by pulses of high density energy from a pulsed high energy density welding device such as an electronically pulsed gas laser. The movement of the member being welded is detected in the vicinity of the pulsed laser. The pulsed laser is controlled in response to the detected movement so that the energy for welding from the pulses per unit length of the member being welded is accurately controlled. The control of the laser involves pulsing of the laser in response to the detected movement of the member so that the pitch of the overlapping welds along the member is substantially constant. Also, the power of the laser pulses is controlled and adjusted in a predetermined manner in response to the detected movements. The high speed movement of the member is detected by detecting the leading edge of the moving member at or upstream of the pulsed laser and also continuously detecting the position of the moving member at or as it moves past the pulsed laser. High quality welds can be made in materials at speeds of 22-40 m/min. or more with the method and apparatus.

Abstract translation: 公开了一种用于高速焊接的方法和装置，其中沿着具有多个由来自脉冲高能密度焊接装置（例如电子脉冲气体激光器）的高密度能量的脉冲形成的多个重叠焊接的部件高速形成连续焊接 。 在脉冲激光附近检测被焊接部件的移动。 响应于检测到的移动来控制脉冲激光，从而准确地控制来自被焊接部件的每单位长度脉冲的焊接能量。 激光的控制涉及激光器的脉冲响应于检测到的部件的运动，使得沿着部件的重叠焊缝的间距基本上是恒定的。 此外，响应于检测到的移动，以预定方式控制和调整激光脉冲的功率。 通过检测脉冲激光器的上游或上游的移动部件的前缘来检测部件的高速运动，并且还可以在移动部件移动经过脉冲激光器时连续检测移动部件的位置。 高质量的焊缝可以以22-40 m / min的速度在材料上制成。 或更多的方法和装置。

公开(公告)号：US4128753A

公开(公告)日：1978-12-05

申请号：US820374

申请日：1977-07-29

Applicant: Charles M. Sharp

Inventor： Charles M. Sharp

IPC: B23K26/14 ,  B23K26/24 ,  B23K9/02

CPC classification number: B23K26/1476 ,  B23K26/24

Abstract: Laser beam welding apparatus comprising a body with a passage through which the laser beam is directed and focused to a position outside the body closely adjacent to a terminal portion of the passage. A second passage opens into the first to direct a transverse jet of shielding gas to sweep away the plasma formed during welding through an aperture in the opposite wall of the first passage. Since the welding zone is virtually enclosed by the body the incidence of air entrainment by the transverse jet of shielding gas is minimized.

Abstract translation: 激光束焊接装置，包括具有通道的主体，激光束通过该通道被引导并聚焦到与通道的端子部分紧密相邻的主​​体外部的位置。 第二通道通向第一通道，以引导屏蔽气体的横向射流，以扫除焊接过程中形成的等离子体，使其穿过第一通道的相对壁中的孔。 由于焊接区域被实体封闭，所以被保护气体的横向射流引起的空气夹带的发生被最小化。

公开(公告)号：US4752669A

公开(公告)日：1988-06-21

申请号：US942224

申请日：1986-12-16

Applicant: Charles M. Sharp ,  Ronald D. Young

Inventor： Charles M. Sharp ,  Ronald D. Young

IPC: B23K26/00 ,  B23K26/06 ,  B23K26/20 ,  B23K26/36 ,  B23K26/38 ,  H01S3/00 ,  H01S3/097 ,  H01S3/10 ,  H01S3/104

CPC classification number: H01S3/104 ,  B23K26/0622 ,  B23K26/364 ,  B23K2203/05

Abstract: An improved method of laser processing of a material by directing a laser beam against the material comprises providing the beam with a power waveform with respect to time characterized by a plurality of peak power pulses and a predetermined CW power level between the peak power pulses such that the average beam power maintained is equal to or greater than the predetermined CW power level of the beam. The method is particularly adapted for cutting material such as aluminum, copper and stainless steel with improved cut quality at a relatively high cutting speed and for welding.

Abstract translation: 通过将激光束引导到材料上来激光处理材料的改进方法包括提供光束相对于由峰值功率脉冲之间的多个峰值功率脉冲和预定CW功率电平表征的时间的功率波形，使得峰值功率脉冲之间 维持的平均光束功率等于或大于光束的预定CW功率电平。 该方法特别适用于以相对较高的切割速度和用于焊接的方式切割具有改进的切割质量的铝，铜和不锈钢材料。

公开(公告)号：US4577088A

公开(公告)日：1986-03-18

申请号：US625239

申请日：1984-06-27

Applicant: Charles M. Sharp

Inventor： Charles M. Sharp

IPC: B23K26/26 ,  B23K26/02

CPC classification number: B23K26/262 ,  B23K2201/125

Abstract: A method of forming a continuous laser butt weld between two members is disclosed. The method comprises providing two members to be butt welded, positioning respective edges of the members in abutting contact with the two members being canted slightly with respect to one another so that the butt joint formed by the edges is open toward a first side of the member, with the edges contacting one another toward a second side of the members opposite the first side, and directing a high energy density laser beam at the butt joint from the first side of the members so that at least a portion of the laser beam extends into the open side of the butt joint to the edges, while urging the edges of the two members in the direction of the butt joint for butt welding the members.

Abstract translation: 公开了一种在两个构件之间形成连续激光对接焊接的方法。 该方法包括提供两个待对接的构件，使构件的相应边缘相对于彼此稍微倾斜的两个构件邻接接触，使得由边缘形成的对接接头朝向构件的第一侧敞开 边缘彼此接触朝向与第一侧相对的构件的第二侧，并且从构件的第一侧将对应接头的高能量密度激光束引导到激光束的至少一部分延伸到 同时沿对向接头的方向推动两个构件的边缘，以对接构件，从而对接边缘的开口侧。