公开(公告)号：US06611731B2

公开(公告)日：2003-08-26

申请号：US10200619

申请日：2002-07-22

Applicant: Jason E. Duffin

Inventor： Jason E. Duffin

IPC: B23K2600

CPC classification number: G05B19/19 ,  B23B39/00 ,  B23B2250/12 ,  B23B2251/426 ,  B23K26/389 ,  G05B2219/45139 ,  G05B2219/50294

Abstract: The method is suitable for the micromachining of accurately aligned holes in the aerofoil surface of a component such as a jet engine turbine blade or vane which comprises a ground anchorage portion and a cast aerofoil portion. The method uses a micromachining apparatus which is pre-programmed to machine holes in the aerofoil surface when that surface is in a predefined reference position and orientation in the apparatus. Initially the component is mounted in the micromachining apparatus by means of its anchorage portion. At least one probe is then moved into contact with the surface of the cast aerofoil portion to derive the positions of selected points on that aerofoil portion. From the derived position data, angular and linear offset data may be calculated to define the deviation of that cast aerofoil portion from the reference position and orientation defined in the computer memory of the micromachining apparatus. That angular and linear offset data is applied to the computer program resident in the micromachining apparatus to control the movement of the drilling head relative to the aerofoil surface and to machine the air holes in the aerofoil surface without having to remove the component from the apparatus.

Abstract translation: 该方法适用于在诸如喷气发动机涡轮叶片或叶片的部件的机翼表面中精确对准的孔的微加工，其包括地面锚固部分和铸造机翼部分。 该方法使用微加工设备，该微机械加工设备在该表面处于设备中的预定参考位置和取向时被预编程为加工机翼表面中的孔。 最初，组件通过其锚固部分安装在微加工装置中。 然后将至少一个探针移动成与铸造机翼部分的表面接触以导出该机翼部分上的选定点的位置。 根据导出的位置数据，可以计算角度和线性偏移数据，以定义该铸造翼型部分与微加工装置的计算机存储器中限定的参考位置和取向的偏差。 该角度和线性偏移数据被施加到驻留在微机械加工装置中的计算机程序，以控制钻头相对于机翼表面的移动，并且对机翼表面中的空气孔进行加工，而不必从组件中移除部件。

公开(公告)号：US06201214B1

公开(公告)日：2001-03-13

申请号：US09295116

申请日：1999-04-19

Applicant: Jason E. Duffin

Inventor： Jason E. Duffin

IPC: B23K2600

CPC classification number: B23K26/382 ,  B23K26/04 ,  B23K26/40 ,  B23K2101/35 ,  B23K2103/52

Abstract: The invention provides a method of drilling holes sequentially through a workpiece using a laser gun with a camera positioned axially in-line with the drilling beam of the laser gun. Each image from the camera is analysed by digital image processing techniques to control the positioning of the laser nozzle relative to the workpiece and/or to compensate for errors produced in previously drilled holes. By feedback from the digitally processed images it is possible to repeat the auto-focusing of the laser automatically throughout the drilling of a large number of holes in the same workpiece, to adjust the drilling of subsequent holes in order to bring the hole characteristics closed to a predefined optimum, or to abort work on a particular workpiece if hole diameters exceed a given tolerance range.

Abstract translation: 本发明提供一种使用激光枪依次穿过工件的方法，该激光枪具有与激光枪的钻杆轴向成一直线定位的照相机。 通过数字图像处理技术分析来自相机的每个图像，以控制激光喷嘴相对于工件的定位和/或补偿先前钻孔中产生的误差。 通过来自数字处理图像的反馈，可以在同一工件中的大量孔的钻孔中自动重复激光的自动聚焦，以调整后续孔的钻孔，以使孔特性闭合 预定义的最佳值，或者如果孔直径超过给定的公差范围，则在特定工件上中止工作。

公开(公告)号：US06417475B1

公开(公告)日：2002-07-09

申请号：US09575953

申请日：2000-05-23

Applicant: Jason E. Duffin

Inventor： Jason E. Duffin

IPC: B23H718

CPC classification number: B23H11/00 ,  B23H7/065 ,  B23H7/265 ,  B23H9/14 ,  B23H2500/20

Abstract: The invention provides an apparatus and method for detecting an out-of-line electrode prior to the start of an electrical discharge machining (EDM) process. The invention involves positioning an electrically conductive test component in an accurately defined location relative to a workpiece. The test component has a test hole of a size and shape corresponding to the hole to be drilled in the workpiece by an electrode of an EDM machine. The electrode is then inserted into the test hole. If the electrode is correctly aligned then it will not contact the test component and no electrically conductive path will be formed between the electrode and the test component. If such contact is detected then the electrode is misaligned and the EDM process is stopped. This sequence is repeated immediately before the commencement of drilling of each hole in the workpiece.

Abstract translation: 本发明提供一种用于在放电加工（EDM）处理开始之前检测线外电极的装置和方法。 本发明涉及将导电测试部件相对于工件定位在精确限定的位置。 测试部件具有与EDM机的电极在工件上要钻孔的尺寸和形状相对应的测试孔。 然后将电极插入测试孔。 如果电极正确对准，则其不会接触测试部件，并且在电极和测试部件之间不会形成导电路径。 如果检测到这种接触，则电极不对准，并且停止EDM过程。 在工件中每个孔的钻孔开始之前立即重复该顺序。