公开(公告)号：US20050230364A1

公开(公告)日：2005-10-20

申请号：US10830493

申请日：2004-04-20

申请人： Pei-Chung Wang ,  Shigeki Saitoh ,  Fujiko Matsuda ,  Masami Takeshi ,  Masatake Saito

发明人： Pei-Chung Wang ,  Shigeki Saitoh ,  Fujiko Matsuda ,  Masami Takeshi ,  Masatake Saito

IPC分类号： B23K26/06 ,  B23K26/067 ,  B23K26/24 ,  B23K26/26 ,  B23K26/28 ,  B23K26/40 ,  B23K33/00

CPC分类号： B23K33/00 ,  B23K26/0604 ,  B23K26/244 ,  B23K2101/18 ,  B23K2103/10

摘要： Hot cracking in laser welds produced in metal workpieces, especially aluminum or magnesium sheet alloys, is avoided by suitably combining the beams of two different lasers, for example a CO2 laser and a YAG laser, into a compound beam that is moved along a weld path in the surface of the workpiece. The power level of at least one of the lasers is cyclically varied so that weld nugget segments of different alternating, hot crack free, configurations are produced in a linear weld.

摘要翻译： 通过将两种不同的激光器（例如CO 2激光器和YAG激光器）的光束适当地组合到化合物中来避免在金属工件，特别是铝或镁片合金中产生的激光焊缝中的热裂纹 沿着工件表面中的焊接路径移动的梁。 至少一个激光器的功率电平是循环变化的，使得在线性焊接中产生不同交替，无热裂纹的构造的焊点段。

公开(公告)号：US07479616B2

公开(公告)日：2009-01-20

申请号：US10830493

申请日：2004-04-20

申请人： Pei-Chung Wang ,  Shigeki Saitoh ,  Fujiko Matsuda ,  Masami Takeshi ,  Masatake Saito

发明人： Pei-Chung Wang ,  Shigeki Saitoh ,  Fujiko Matsuda ,  Masami Takeshi ,  Masatake Saito

IPC分类号： B23K26/00 ,  B23K26/02

CPC分类号： B23K33/00 ,  B23K26/0604 ,  B23K26/244 ,  B23K2101/18 ,  B23K2103/10

摘要： Hot cracking in laser welds produced in metal workpieces, especially aluminum or magnesium sheet alloys, is avoided by suitably combining the beams of two different lasers, for example a CO2 laser and a YAG laser, into a compound beam that is moved along a weld path in the surface of the workpiece. The power level of at least one of the lasers is cyclically varied so that weld nugget segments of different alternating, hot crack free, configurations are produced in a linear weld.

摘要翻译： 通过将两种不同的激光束（例如CO2激光器和YAG激光器）适当地组合成沿着焊接路径移动的复合光束来避免在金属工件，特别是铝或镁片合金中产生的激光焊缝中的热裂纹 在工件的表面。 至少一个激光器的功率电平是循环变化的，使得在线性焊接中产生不同交替，无热裂纹的构造的焊点段。

公开(公告)号：US06836561B2

公开(公告)日：2004-12-28

申请号：US09854607

申请日：2001-05-15

申请人： Tsuyoshi Nakajima ,  Masami Takeshi ,  Naoya Murota ,  Yutaka Miyahara

发明人： Tsuyoshi Nakajima ,  Masami Takeshi ,  Naoya Murota ,  Yutaka Miyahara

IPC分类号： G06K900

CPC分类号： G06T7/0002 ,  G06T7/0006 ,  G06T7/62 ,  G06T2207/30164

摘要： A defect detection method and system which can provide a precise determination of whether an object is acceptable without being affected by the position of placement and the rotational orientation of the object. An arc circumscribing the tip of modules of a sprocket is determined. Then, each overlapping region is extracted which is formed by an overlapping portion between an inner portion of a region defined by the arc and the cut-away portion of the sprocket. The area of each overlapping region is determined and compared with each other. In accordance with a determination of whether each area difference falls within the predetermined range of criteria &egr;, it is determined whether a chipped portion exists on the tip of module. If there is a chipped portion on the tip of module, two or more overlapping regions are integrated with each other to form a larger overlapping region, thereby making it possible to determine easily and positively the presence of a chipped portion on the tip of module.

摘要翻译： 一种缺陷检测方法和系统，其能够精确地确定物体是否可接受，而不受放置位置和物体的旋转取向的影响。 确定围绕链轮的模块的末端的圆弧。 然后，通过由电弧限定的区域的内部与链轮的切除部分之间的重叠部分形成每个重叠区域。 确定每个重叠区域的面积并将其进行比较。 根据每个面积差是否落在标准ε的预定范围内的确定，确定在模块的尖端上是否存在切屑部分。 如果在模块的尖端上存在切屑部分，则两个或更多个重叠区域彼此成一体以形成较大的重叠区域，从而可以容易且肯定地确定模块尖端上的切屑部分的存在。

公开(公告)号：US06766047B2

公开(公告)日：2004-07-20

申请号：US10005637

申请日：2001-12-05

申请人： Yutaka Muraki ,  Taro Akabane ,  Masami Takeshi ,  Naoya Murota

发明人： Yutaka Muraki ,  Taro Akabane ,  Masami Takeshi ,  Naoya Murota

IPC分类号： G06K918

CPC分类号： G01N21/8851

摘要： A defect inspection method for three-dimensional shapes employs a difference is between a distance code obtained by scanning, a perfect work (a value indicating a rocking angle of a mirror), and a distance code obtained by scanning an inspected work, at each measurement position. Differences are stored for a matrix in which a linear direction of the irradiation and a direction of a moving locus of the irradiation are two orthogonal axes. The most frequent difference value among matrix elements in the linear direction of the irradiation is found at each rocking angle of the mirror. A matrix element having a difference that deviates from the most frequent difference value by more than a set value is found at each rocking position of the mirror. Thus, sections having distance codes that do not match distance codes of the perfect work even by relatively shifting the distance code data are detected and identified as defect candidates. The presence/absence of defects on the inspected work is determined on the basis of all the existing states of matrix elements as defect candidates.

摘要翻译： 三维形状的缺陷检查方法的差别在于通过扫描获得的距离代码，表示反射镜的摇摆角度的完美工作（通过扫描被检查的作品获得的距离代码）之间的差异， 位置。 存储照射的线性方向和照射的移动轨迹的方向为两个正交轴的矩阵的差异。 在镜子的每个摆动角度处，发现在照射的线性方向上的矩阵元素中最频繁的差值。 在反射镜的每个摆动位置处找到具有偏离最频繁的差值超过设定值的差异的矩阵元素。 因此，即使通过相对移动距离代码数据，具有与完美功能的距离代码不匹配的距离代码的部分被检测并被识别为缺陷候选。 在检查工作中存在/不存在缺陷是基于矩阵元素的所有现有状态作为缺陷候选来确定的。