公开(公告)号：US06326589B1

公开(公告)日：2001-12-04

申请号：US09509033

申请日：2000-03-17

Applicant: Jorg Beersiek ,  Wolfgang Schulz

Inventor： Jorg Beersiek ,  Wolfgang Schulz

IPC: B23K2603

CPC classification number: B23K26/032 ,  B23K26/0643 ,  B23K26/0665 ,  B23K26/1423

Abstract: A method for treating materials with plasma-inducing high-energy radiation, especially laser radiation, where an area of vapor capillaries (13) of a work piece (10) is observed with a depth definition detecting device over the entire thickness of the work piece and time-dependent measurement of plasma radiation intensity is carried out. In order to accurately monitor the quality of material treatment, the method is implemented in such a way that the momentary plasma intensities are measured at no less than two measurement points which are parallel to an axis (11) of inducing radiation (12). Predetermined capillary parameters are assigned to the measured plasma intensities and control of the material treatment is conducted depending on the capillary geometric parameters.

Abstract translation: 一种用等离子体诱导高能辐射特别是激光辐射处理材料的方法，其中在工件的整个厚度上用深度定义检测装置观察到工件（10）的蒸气毛细管（13）的面积 并进行等离子体辐射强度的时间依赖性测量。 为了精确地监测材料处理的质量，该方法以不小于两个平行于诱导辐射的轴线（11）的测量点测量瞬时等离子体强度的方式实现。 预定的毛细管参数被分配给测量的等离子体强度，并且根据毛细管几何参数进行材料处理的控制。

公开(公告)号：US06822188B1

公开(公告)日：2004-11-23

申请号：US09807061

申请日：2001-07-09

Applicant: Christian Kratzsch ,  Wolfgang Schulz ,  Peter Abels

Inventor： Christian Kratzsch ,  Wolfgang Schulz ,  Peter Abels

IPC: B23K2603

CPC classification number: B23K26/032

Abstract: A method for materials processing by means of plasma-inducing high-energy radiation, especially laser radiation, in which the instantaneous intensity of the plasma radiation is measured at plural locations of a vapor capillary. So that the method can also be performed with perfect welding results on workpieces of very small thickness, shapes of two spaced-apart peak intensity regions, or of another type of electromagnetic radiation emitted from the vapor capillary, and of a minimum region that can be formed between these two regions of extreme values are detected metrologically, the so detected shapes of the regions of extreme values are compared with predetermined region shapes, and control of the materials processing operation takes place as a function of deviations of the detected shapes from the predetermined region shapes.

Abstract translation: 一种通过等离子体诱导高能辐射特别是激光辐射进行材料处理的方法，其中在蒸汽毛细管的多个位置处测量等离子体辐射的瞬时强度。 因此，该方法也可以对于非常小厚度的工件，两个间隔开的峰值强度区域的形状或从蒸气毛细管发射的另一种类型的电磁辐射的工件以及可以是最小区域的完美焊接结果进行 在这两个极值值区域之间形成的这些极值的检测与所预测的区域形状进行比较，将极值值区域的检测形状进行比较，根据检测出的形状与预定的区域的偏差进行控制 区域形状。

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：US06787733B2

公开(公告)日：2004-09-07

申请号：US10258786

申请日：2002-10-28

Applicant: Holger Lubatschowski ,  Alexander Heisterkamp ,  Gero Maatz

Inventor： Holger Lubatschowski ,  Alexander Heisterkamp ,  Gero Maatz

IPC: B23K2603

CPC classification number: B23K26/03 ,  B23K26/0624

Abstract: A device for machining a material with ultrashort laser pulses is described. This device comprises: (a) a device (1) for generating a sequence of first laser pulses, where the first laser pulses each have a duration of less than 300 picoseconds and the repetition rate for the first laser pulses is in the range between 100 kHz and 1 GHz, (b) a converter (2) for converting a first set of the sequence of first laser pulses into a sequence of second laser pulses for application to and for machining of the material, where the second laser pulses each have a duration of less than 300 picoseconds and the repetition rate for the second laser pulses is in the range between 1 Hz and 1 MHz, as well as (c) a testing device (3, 5, 6, 7, 15) that is equipped to apply first laser pulses, which do not belong to the first set, to the material, to detect specific results of this application and to provide these detected results as information.

Abstract translation: 描述了用于用超短激光脉冲加工材料的装置。 该装置包括：（a）用于产生第一激光脉冲序列的装置（1），其中第一激光脉冲各自具有小于300皮秒的持续时间，并且第一激光脉冲的重复率在100kHz和 1GHz，（b）转换器（2），用于将第一组第一激光脉冲序列转换为第二激光脉冲序列，以供应用于和用于材料的加工，其中第二激光脉冲的持续时间较短 超过300皮秒，并且第二激光脉冲的重复率在1Hz和1MHz之间的范围内，以及（c）被配备为施加第一激光脉冲的测试装置（3,5,6,7,15） ，不属于第一组，材料，检测此应用程序的具体结果，并将这些检测结果提供为信息。

公开(公告)号：US06600129B2

公开(公告)日：2003-07-29

申请号：US09788887

申请日：2001-02-20

Applicant: Jialin Shen ,  Jürgen Steinberger

Inventor： Jialin Shen ,  Jürgen Steinberger

IPC: B23K2603

CPC classification number: B29C64/153 ,  B22F2003/1056 ,  B22F2999/00 ,  B29C35/0288 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  Y02P10/295 ,  B22F2203/03 ,  B22F3/1055

Abstract: A device and process for sintering a powder with a laser beam, and in particular, a rapid prototyping process involving selective laser sintering (SLS), with reduction in non-homogeneities, i.e., grooves or hollows due to complete melting of powder or poor material characteristics due to insufficient melting of powder. The problem is solved by a process and a device for homogenization of the temperature distribution in the part during its manufacture. For this, the temperature of the sinter powder is detected in the sinter point and the power of the laser is controlled depending upon the detected temperature. Geometric changes of the moveable detection area, as well as the changes in the chromatic adjustment, and beam correcting errors, all of which occur depending upon the position of the detection area on the upper surface of the powder bed, are taken into consideration. Thereby a more realistic determination of the temperature values is made possible from the measured temperature values.

Abstract translation: 一种用激光束烧结粉末的装置和方法，特别是涉及选择性激光烧结（SLS）的快速成型工艺，减少非匀质性，即由于粉末或不良材料的完全熔化导致的凹槽或中空部分 由于粉末熔化不足造成的特性。 该问题通过在其制造期间在部件中的温度分布均匀化的工艺和装置来解决。 为此，在烧结点中检测烧结粉末的温度，根据检测到的温度来控制激光的功率。 考虑到可移动检测区域的几何变化以及色调的变化和光束校正误差，所有这些变化都取决于粉末床的上表面上的检测区域的位置而发生。 因此，从测量的温度值可以更可靠地确定温度值。

公开(公告)号：US06713715B2

公开(公告)日：2004-03-30

申请号：US10045165

申请日：2002-01-15

Applicant: C. Paul Christensen ,  Sidney P. Wright

Inventor： C. Paul Christensen ,  Sidney P. Wright

IPC: B23K2603

CPC classification number: B23K26/0853 ,  B23K26/032 ,  B23K26/0624 ,  B23K2101/007 ,  B41M5/24 ,  B44B7/007

Abstract: A system for laser marking a gemstone (10) is provided. A pulsed laser (20) generates a laser pulse (40) which is then directed towards a focusing element (60) through optical means (30). Lens (60) focuses the laser pulse into focused pulse (70). The focused pulse (70) is projected onto a surface of gemstone (80) which is mounted in fixture (90). A computer control system (110) allows a user to input and control a predetermined path of displacement between the gemstone (80) and the focused laser pulse (70).

Abstract translation: 提供了一种用于激光标记宝石（10）的系统。 脉冲激光器（20）产生激光脉冲（40），然后通过光学装置（30）将激光脉冲（40）引向聚焦元件（60）。 透镜（60）将激光脉冲聚焦成聚焦脉冲（70）。 聚焦脉冲（70）被投影到安装在固定装置（90）中的宝石（80）的表面上。 计算机控制系统（110）允许用户输入和控制宝石（80）和聚焦激光脉冲（70）之间的预定位移路径。

公开(公告)号：US06710288B2

公开(公告)日：2004-03-23

申请号：US10266944

申请日：2002-10-08

Applicant: Xinbing Liu ,  Ming Li

Inventor： Xinbing Liu ,  Ming Li

IPC: B23K2603

CPC classification number: B23K26/067 ,  B23K26/042 ,  B23K26/0624 ,  H05K3/0008 ,  H05K3/0026

Abstract: A method is provided for aligning a workpiece in a laser drilling system. The method includes: providing a workpiece having at least two substantially planar and parallel surfaces, including a first planar surface in which ablations are formed therein by the laser drilling system; propagating an alignment beam of light towards a second planar surface of the workpiece, the alignment beam being incident on and reflected by the second planar surface, thereby forming a reflected beam of light; measuring a reflection angle of the reflected beam; and determining alignment information for the workpiece based on the measured reflection angle of the reflected beam. The method may further include adjusting alignment of the workpiece based on the alignment information.

Abstract translation: 提供了一种用于在激光钻孔系统中对准工件的方法。 该方法包括：提供具有至少两个基本平坦且平行的表面的工件，其包括第一平面，激光钻孔系统在其中形成有消融; 将对准光束朝向工件的第二平面传播，所述对准光束入射并由第二平面表面反射，从而形成反射光束; 测量反射光束的反射角; 并且基于所测量的反射光束的反射角确定工件的对准信息。 该方法还可以包括基于对准信息来调整工件的对准。

公开(公告)号：US06621047B2

公开(公告)日：2003-09-16

申请号：US10128484

申请日：2002-04-24

Applicant: Berthold Kessler ,  Bert Schürmann

Inventor： Berthold Kessler ,  Bert Schürmann

IPC: B23K2603

CPC classification number: B23K26/032 ,  B23K26/034

Abstract: The invention concerns a method which can be carried out with a sensor device, for monitoring a laser machining operation to be performed on a work piece (12), in which for quality assurance with a local-resolution receiver assembly (10, 11, 14) a given field of observation (13) is selected in the region of the interaction zone between laser beam (25) and work piece (12), in which radiation coming from the selected field of observation (13) is detected with a radiation-sensitive receiver (10) which delivers an electrical signal corresponding to the detected radiation, in which the electrical signal is filtered in a signal processing circuit (16) in order to detect rapid and/or short, fault-related changes in intensity of the detected radiation, and in which the filtered electrical signal for the detection of faults during the laser machining operation.

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：US06177649B1

公开(公告)日：2001-01-23

申请号：US09235497

申请日：1999-01-22

Applicant: Thierry Juret ,  Jean Philippe

Inventor： Thierry Juret ,  Jean Philippe

IPC: B23K2603

CPC classification number: B23K26/032 ,  B23K26/034

Abstract: Both a method and apparatus for regulating the position of a camera in a thermographic control and monitoring arrangement is provided for a system for welding together at least two metal plates along a joint plane. The apparatus includes a welding head that generates a high energy-density welding beam, a camera for thermographically monitoring the welding carried out by the welding beam, a movable frame member for supporting the welding head and camera, a fixed light source disposed in a zone that is accessible by the welding beam generated by the welding head, and an adjustment assembly for regulating the position of the camera with respect to the welding head. In the method, the welding beam is moved into a reference position with respect to a point source of light. Next, the frame member is displaced by a specific distance d corresponding to the distance desired between an impact point I of the welding beam and the field of view of the camera on the plate is being welded. Next, the field of view of the camera is adjusted so that the camera registers signals from the light source. Finally, the camera is locked into position with respect to the frame member. By accurately adjusting the position of the camera with respect to the weld created by the welding head, the resulting thermal plot generated by the camera can be accurately interpreted.

Abstract translation: 提供了一种用于在热成像控制和监视装置中调节相机的位置的方法和装置，用于沿着接合平面将至少两个金属板焊接在一起的系统。 该装置包括产生高能量密度焊接梁的焊接头，用于热像仪监测由焊接梁进行的焊接的照相机，用于支撑焊接头和照相机的可移动框架构件，设置在区域中的固定光源 由焊接头产生的焊接梁可以接近，以及用于调节相机相对于焊接头的位置的调节组件。 在该方法中，焊接梁相对于点光源移动到参考位置。 接下来，框架构件相对于焊接梁的冲击点I和正在焊接的板上的照相机的视场之间的期望相对应的特定距离d移位。 接下来，调整摄像机的视野，使得照相机记录来自光源的信号。 最后，照相机相对于框架构件被锁定就位。 通过精确地调整相机相对于由焊接头产生的焊接的位置，可以准确地解释由照相机产生的结果热图。