公开(公告)号：US5160822A

公开(公告)日：1992-11-03

申请号：US701403

申请日：1991-05-14

Applicant: Stephen Aleshin

Inventor： Stephen Aleshin

IPC: B23K26/34 ,  F01D5/20

CPC classification number: F01D5/20 ,  B23K26/342 ,  B23K35/0244 ,  B23K35/0255 ,  C23C24/10 ,  B23K2201/001 ,  F05D2250/34

Abstract: A method for depositing material on a tip of a gas turbine engine airfoil includes the steps of: selecting a linear principal weld path across the airfoil tip relative to an airfoil contour at the tip; selecting a weld bead stitch pattern to substantially completely cover the airfoil tip with the stitch pattern crisscrossing the linear principal weld path between opposite edges of the airfoil and advancing across the airfoil in the direction of the linear principal weld path; and depositing at least a first layer of tip material corresponding to the weld bead stitch pattern and the linear principal weld path by welding.

Abstract translation: 一种用于在燃气涡轮发动机翼型件的尖端上沉积材料的方法包括以下步骤：选择横跨翼型端头的线性主焊缝相对于尖端处的翼型轮廓; 选择焊缝图案基本上完全覆盖翼型头，其中缝合图案与翼型件的相对边缘之间的线性主要焊接路径交叉并沿线性主要焊接路径的方向前进穿过翼型; 以及通过焊接沉积对应于焊道缝合图案和线性主焊缝路径的至少第一层尖端材料。

公开(公告)号：US06476352B2

公开(公告)日：2002-11-05

申请号：US09740208

申请日：2000-12-18

Applicant: Stephen Aleshin

Inventor： Stephen Aleshin

IPC: B23K2603

CPC classification number: B23K26/18 ,  B23K26/03 ,  B23K26/08 ,  B23K2101/001 ,  G05B2219/49157

Abstract: A method for safeguarding regions of an airfoil adjacent to a work area from collateral damage as a result of laser operations. The method utilizes apparatus that includes a sensor assembly. The sensor assembly is fixedly attached to the laser nozzle assembly and moves with the laser nozzle assembly. The laser operations are controlled by a preprogrammed CNC controller. A fixture is used to position the workpiece in relationship to the nozzle on a laser table, the table movable in response to instructions from the controller. A beam stop material is placed over the regions of the airfoil adjacent to the work area to prevent back wall burn or to absorb reflected laser beam energy and to protect the region from other collateral damage such as stray material. The beam stop material is held in place on the workpiece and the workpiece is held in position on the fixture by elastomeric bands. On activation of the CNC program to perform the sequence of operations to accomplish preselected tasks, the laser nozzle performs as one of the operations in the sequence of operations an initial movement. The initial movement of the laser nozzle also causes movement of the sensor assembly. The sensor assembly detects the presence or absence of the elastomeric straps during the initial movement. If the elastomeric straps are detected, a signal is generated and sent to the controller, which then executes the remaining operations in the sequence of operations. If no signal is received by the controller, then the controller does not permit the sequence of operations to continue.

公开(公告)号：US06172327B2

公开(公告)日：2001-01-09

申请号：US09353486

申请日：1999-07-13

Applicant: Stephen Aleshin ,  Michael J. Brunck ,  Christopher L. English

Inventor： Stephen Aleshin ,  Michael J. Brunck ,  Christopher L. English

IPC: B23K2612

CPC classification number: B23K26/032 ,  B23K26/12 ,  B23K26/123 ,  B23K26/125 ,  B23K26/127 ,  B23K26/32 ,  B23K26/342 ,  B23K2103/14 ,  B23K2103/18 ,  B23P6/007 ,  F01D5/005 ,  Y10T29/49318

Abstract: A method for repair welding a titanium compressor blisk using laser twist welding. A blisk assembly has damaged portions removed. The surface to be repaired is provided with a predetermined geometry. The portions to be repaired are surrounded by a fixture which contains a laser nozzle. The fixture can provide a protective atmosphere to the area under repair while also shielding adjacent areas from damage resulting form welding. The welding is accomplished using preprogrammed patterns. The welding within the fixture is monitored remotely and is adjusted when stand-off between the weld nozzle and the molten metal are not within a predetermined range.

Abstract translation: 一种使用激光扭焊焊接钛压缩机叶片的方法。 叶片组件已损坏部分被移除。 要修复的表面具有预定的几何形状。 要修复的部分被包含激光喷嘴的固定装置包围。 夹具可以在修理区域提供保护气氛，同时也可以屏蔽相邻区域，避免焊接造成的损坏。 焊接使用预编程图案完成。 夹具内的焊接被远程监控，并且在焊接喷嘴和熔融金属之间的间隔不在预定范围内时进行调节。

公开(公告)号：US06723953B2

公开(公告)日：2004-04-20

申请号：US10255992

申请日：2002-09-26

Applicant: Stephen Aleshin

Inventor： Stephen Aleshin

IPC: B23K2603

CPC classification number: B23K26/18 ,  B23K26/03 ,  B23K26/08 ,  B23K2101/001 ,  G05B2219/49157

Abstract: A method for safeguarding regions of an airfoil adjacent to a work area from collateral damage as a result of laser operations. The method utilizes apparatus that includes a sensor assembly. The sensor assembly is fixedly attached to the laser nozzle assembly and moves with the laser nozzle assembly. The laser operations are controlled by a preprogrammed CNC controller. A fixture is used to position the workpiece in relationship to the nozzle on a laser table, the table movable in response to instructions from the controller. A beam stop material is placed over the regions of the airfoil adjacent to the work area to prevent back wall burn or to absorb reflected laser beam energy and to protect the region from other collateral damage such as stray material. The beam stop material is held in place on the workpiece and the workpiece is held in position on the fixture by elastomeric bands. On activation of the CNC program to perform the sequence of operations to accomplish preselected tasks, the laser nozzle performs as one of the operations in the sequence of operations an initial movement. The initial movement of the laser nozzle also causes movement of the sensor assembly. The sensor assembly detects the presence or absence of the elastomeric straps during the initial movement. If the elastomeric straps are detected, a signal is generated and sent to the controller, which then executes the remaining operations in the sequence of operations. If no signal is received by the controller, then the controller does not permit the sequence of operations to continue.

Abstract translation: 一种用于通过激光操作来保护邻近工作区域的翼型区域免受附带损伤的方法。 该方法利用包括传感器组件的设备。 传感器组件固定地附接到激光喷嘴组件并与激光喷嘴组件一起移动。 激光操作由预编程的CNC控制器控制。 夹具用于将工件与激光台上的喷嘴相关联，该工作台可根据控制器的指示而移动。 梁结束材料放置在与工作区域相邻的翼型件的区域上，以防止后壁燃烧或吸收反射的激光束能量并且保护该区域免受诸如杂散材料的其他附带损坏。 梁止动材料保持在工件上的适当位置，工件通过弹性带固定在固定装置上的适当位置。 在激活CNC程序以执行操作顺序以完成预选的任务时，激光喷嘴作为操作序列中的操作之一执行初始移动。 激光喷嘴的初始运动也导致传感器组件的运动。 传感器组件在初始运动期间检测弹性带的存在或不存在。 如果检测到弹性带，则产生信号并将其发送到控制器，控制器随后按照操作顺序执行剩余的操作。 如果控制器没有接收到信号，则控制器不允许操作顺序继续。

公开(公告)号：US5486676A

公开(公告)日：1996-01-23

申请号：US339388

申请日：1994-11-14

Applicant: Stephen Aleshin

Inventor： Stephen Aleshin

IPC: B23K26/14

CPC classification number: B23K26/144

Abstract: A coaxial single point powder feed nozzle includes an inner tube disposed coaxially within an outer tube. The inner tube has a powder inlet and powder outlet, and the outer tube has a gas inlet for receiving a shaping gas, and a single nozzle outlet. An intermediate portion of the outer tube is spaced radially outwardly from the inner tube to define an annular flow manifold therebetween which receives the shaping gas. The powder outlet is disposed coaxially with the nozzle outlet and is spaced therefrom to define an annular gas outlet for the manifold for channeling the shaping gas around the powder prior to discharge thereof from the nozzle outlet.

Abstract translation: 同轴单点粉末供给喷嘴包括同轴地设置在外管内的内管。 内管具有粉末入口和粉末出口，外管具有用于接收成形气体的气体入口和单个喷嘴出口。 外管的中间部分与内管径向向外间隔开，以在其间限定一个环形流动歧管，其接收成形气体。 粉末出口与喷嘴出口同轴地设置并与其间隔开以限定用于歧管的环形气体出口，用于在成形气体从喷嘴出口排出之前将成形气体引导到粉末周围。

公开(公告)号：US5293265A

公开(公告)日：1994-03-08

申请号：US933650

申请日：1992-08-24

Applicant: Stephen Aleshin ,  Lorne A. Weeter

Inventor： Stephen Aleshin ,  Lorne A. Weeter

IPC: B23K26/08 ,  G02B26/08

CPC classification number: G02B26/0816 ,  B23K26/08 ,  B23K26/082 ,  G02B26/0875

Abstract: A real time variable laser beam spinner, wherein a manual or programmable actuator angularly displaces a mirror or optical flat during rotation in order to follow the instantaneous spin diameter requirements associated with a workpiece, whereby a variable effective spin diameter of the beam results without interrupting the work process.

Abstract translation: 实时可变激光束旋转器，其中手动或可编程致动器在旋转期间角度地移动反射镜或光学平面，以便跟随与工件相关联的瞬时旋转直径要求，由此可以不影响光束的可变有效旋转直径 工作过程。

公开(公告)号：US06326585B1

公开(公告)日：2001-12-04

申请号：US09353487

申请日：1999-07-13

Applicant: Stephen Aleshin ,  Michael J. Brunck ,  Christopher L. English

Inventor： Stephen Aleshin ,  Michael J. Brunck ,  Christopher L. English

IPC: B23K2600

CPC classification number: B23K26/0884 ,  B23K26/032 ,  B23K26/123 ,  B23K26/32 ,  B23K26/342 ,  B23K2103/14 ,  B23K2103/18 ,  F01D5/005

Abstract: Apparatus for performing laser weld repair of complex titanium-base material parts for gas turbine engines. The complex arts, typically compressor blisk airfoil assemblies are enclosed in a local dry box and purged in an inert gas atmosphere. Laser weld repairs are accomplished within this dry box by using a coaxial nozzle and a mixture of helium and argon. The welding is accomplished by maintaining a proper standoff between the weld nozzle and the weld. The welding is monitored and controlled from a remote location using in a video camera system. Copper shielding is provided within the dry box to protect areas adjacent to the weld area from overheating and weld spatter.

Abstract translation: 用于对燃气涡轮发动机进行复杂钛基材料部件的激光焊接修复的装置。 复杂的技术，通常是压缩机叶片翼型组件被封闭在局部干燥箱中并在惰性气体气氛中吹扫。 通过使用同轴喷嘴和氦气和氩气的混合物，在该干燥箱内完成激光焊接维修。 通过在焊接喷嘴和焊缝之间保持适当的间隙来实现焊接。 在远程位置使用摄像机系统监测和控制焊接。 在干燥箱内提供铜屏蔽，以保护邻近焊接区域的区域免于过热和焊接飞溅。

公开(公告)号：US5396333A

公开(公告)日：1995-03-07

申请号：US886566

申请日：1992-05-21

Applicant: Stephen Aleshin ,  Vanon D. Pratt

Inventor： Stephen Aleshin ,  Vanon D. Pratt

IPC: B23K26/14 ,  B23K26/42 ,  G01N15/02 ,  G01B11/04 ,  B23K26/02

CPC classification number: B23K26/1494 ,  B23K26/144 ,  B23K26/702 ,  G01N15/0205

Abstract: A device for observation and analysis of a cross-sectional portion of a stream of material, which may be either a particle or a fluid stream, includes a laser light source for generating a beam of light. A focusing lens is disposed in an optical path between the laser source and the stream and a plano-cylindrical lens of a selected focal length is disposed in the optical path between the focusing lens and the stream. The focusing lens and the plano-cylindrical lens convert the beam of light from the laser light source to a plane of light which may be projected through the stream to illuminate a selected cross-section of the stream for observation and analysis thereof.

Abstract translation: 用于观察和分析可以是颗粒或流体流的材料流的横截面部分的装置包括用于产生光束的激光源。 聚焦透镜设置在激光源和流之间的光路中，并且所选焦距的平圆柱形透镜设置在聚焦透镜和流之间的光路中。 聚焦透镜和平底圆柱透镜将来自激光光源的光束转换成可以通过流投影的光平面，以照亮所选择的流的横截面以进行观察和分析。

公开(公告)号：US5353865A

公开(公告)日：1994-10-11

申请号：US860397

申请日：1992-03-30

Applicant: Eugene F. Adiutori ,  Byron A. Pritchard, Jr. ,  Stephen Aleshin

Inventor： Eugene F. Adiutori ,  Byron A. Pritchard, Jr. ,  Stephen Aleshin

IPC: F28F13/02 ,  F28F13/18

CPC classification number: F28F13/185 ,  F28F13/02 ,  F23R2900/03044 ,  F23R2900/03045 ,  Y02T50/675 ,  Y10S165/908

Abstract: An improved heat transfer assembly includes a textured impingement surface and means for impinging cooling air directly upon the textured surface. A component includes a surface textured to increase convective heat transfer with minimal increase in resistance to conductive heat transfer through the component. The textured surface can comprise an array of closely spaced hemispherically shaped protuberances. A method is disclosed for texturing a surface with discrete laser welds.

Abstract translation: 改进的传热组件包括纹理化的冲击表面和用于将冷却空气直接撞击在纹理表面上的装置。 组件包括纹理化的表面以增加对流传热，同时对通过部件的传导热传递的阻力的最小增加。 纹理表面可以包括紧密间隔开的半球形突起的阵列。 公开了一种用离散激光焊缝对表面进行纹理化的方法。

公开(公告)号：US5245155A

公开(公告)日：1993-09-14

申请号：US846506

申请日：1992-03-06

Applicant: Vanon D. Pratt ,  Paul J. E. Monson ,  Stephen Aleshin

Inventor： Vanon D. Pratt ,  Paul J. E. Monson ,  Stephen Aleshin

IPC: B23K26/34

CPC classification number: B23K26/34 ,  B23K26/342 ,  B23K35/0244 ,  F05B2220/302

Abstract: An apparatus for welding together a plurality of portions of a workpiece with a complex geometric surface includes a laser source for generating a laser beam; the laser source is positioned at a predetermined distance from the workpiece portions to form a weld bead of a selected width. The apparatus also includes a powder feed mechanism with a nozzle for depositing a chosen volume of powder per unit of time onto the workpiece surface. The powder feed nozzle includes a structure for preventing a reflected laser beam from the workpiece surface and the weld bead from being incident upon an orifice of the nozzle and thereby preventing the powder from melting and clogging the nozzle orifice. Either the workpiece or the laser source in combination with the powder feed mechanism may be mounted on a manipulator arrangement for moving either the workpiece portions or the combination of the laser source and powder feed mechanism relative to one another to deposit the weld bead along a predetermined weld path.

Abstract translation: 用于将具有复数几何表面的工件的多个部分焊接在一起的装置包括用于产生激光束的激光源; 激光源位于与工件部分预定距离处，以形成选定宽度的焊道。 该设备还包括具有用于将每单位时间的选定体积的粉末沉积到工件表面上的喷嘴的粉末进料机构。 粉末供给喷嘴包括用于防止来自工件表面的反射激光束和焊道入射到喷嘴孔口上的结构，从而防止粉末熔化和堵塞喷嘴孔口。 工件或激光源与粉末进给机构组合可以安装在操纵器装置上，用于相对于彼此移动工件部分或激光源和粉末进给机构的组合，以沿着预定的方式沉积焊道 焊接路径。