Process for qualifying accuracy of a NC system
    3.
    发明公开
    Process for qualifying accuracy of a NC system 有权
    一种用于确定数字控制系统的精确度的方法

    公开(公告)号:EP1139189A3

    公开(公告)日:2006-11-22

    申请号:EP01200625.0

    申请日:2001-02-21

    摘要: Positioning errors of a multi-axis numerically controlled machine and a flexible workpiece holding fixture are related through a mathematical model to the statistical total error in the position of the machine tool (e.g., a drill bit for drilling holes), and maximum allowable amounts are assigned for each of the individual contributing factors to the total error. The math model allows all of the errors or tolerances of the machine and holding fixture to be distributed in a realistic manner in order to keep the resulting accuracy in production parts within acceptable limits. The relationship between the machine and fixture is checked by a probe mounted in the machine spindle which probes the holding fixture and measures the positions of movable holding members of the fixture. Functioning and alignment of the probe are checked with the probe against a fixed monument. Global positioning accuracy of the machine is checked throughout a working envelope of the machine using a laser measuring instrument. A master coordinate system relative to the ways of the machine is created within the laser instrument by calculating a linear fit of machine position coordinates acquired as the machine is moved along each of two perpendicular axes of the machine, and the master coordinate system is used for the global accuracy and fixture accuracy checks, thus eliminating the need for a foundation-based reference system.

    Process for qualifying accuracy of a NC system
    4.
    发明公开
    Process for qualifying accuracy of a NC system 有权
    Verfahren zur Genauigkeitsbestimmung eines数学Steuerungssystems

    公开(公告)号:EP1139189A2

    公开(公告)日:2001-10-04

    申请号:EP01200625.0

    申请日:2001-02-21

    摘要: Positioning errors of a multi-axis numerically controlled machine and a flexible workpiece holding fixture are related through a mathematical model to the statistical total error in the position of the machine tool (e.g., a drill bit for drilling holes), and maximum allowable amounts are assigned for each of the individual contributing factors to the total error. The math model allows all of the errors or tolerances of the machine and holding fixture to be distributed in a realistic manner in order to keep the resulting accuracy in production parts within acceptable limits. The relationship between the machine and fixture is checked by a probe mounted in the machine spindle which probes the holding fixture and measures the positions of movable holding members of the fixture. Functioning and alignment of the probe are checked with the probe against a fixed monument. Global positioning accuracy of the machine is checked throughout a working envelope of the machine using a laser measuring instrument. A master coordinate system relative to the ways of the machine is created within the laser instrument by calculating a linear fit of machine position coordinates acquired as the machine is moved along each of two perpendicular axes of the machine, and the master coordinate system is used for the global accuracy and fixture accuracy checks, thus eliminating the need for a foundation-based reference system.

    摘要翻译: 多轴数控机床和柔性工件保持夹具的定位误差通过数学模型与机床位置的统计总误差(例如,钻孔用于钻孔)相关联,最大允许量为 分配给每个个别贡献因素的总错误。 数学模型允许以现实的方式分配机器和夹具的所有误差或公差,以将生产零件的最终精度保持在可接受的限度内。 机器和夹具之间的关系通过安装在机器主轴上的探头来检查,该探针探测固定夹具并测量固定装置的活动保持构件的位置。 使用探针对固定的纪念碑检查探头的功能和对准。 使用激光测量仪器在机器的整个工作范围内检查机器的全局定位精度。 通过计算机器沿着机器的两个垂直轴中的每一个移动而获取的机器位置坐标的线性拟合,在激光仪器内创建相对于机器的方式的主坐标系,并且主坐标系用于 全局精度和夹具精度检查,从而无需基于基础的参考系统。

    Lap splice mini-riveter system and method for using the system
    6.
    发明公开
    Lap splice mini-riveter system and method for using the system 有权
    系统和Verfahren zum Nieten

    公开(公告)号:EP0917920A3

    公开(公告)日:2000-04-26

    申请号:EP98203998.4

    申请日:1998-11-26

    IPC分类号: B21J15/10 B23Q9/00

    摘要: The present invention relates to a portable process for automated fastening of aircraft structures. The invention will employ two primary elements for locating and installing through-the-skin fasteners. Inside and outside units are attached onto an airframe and indexed to each other through coordination holes that have been pre-drilled through the structure. The aircraft structure is assembled with the pre-drilled coordination holes by aligning adjacent airframe parts and inserting alignment pins. The alignment pins will provide a degree of clamping to pull the parts together and provide indexing for inside and outside vacuum attachment track systems. The invention is equipped to traverse along the track system, accurately position itself, and drill only or countersink a hole, insert a fastener, and fasten, i.e., upset a rivet, or run down a threaded nut, then reposition itself to the next fastener location and repeat the process.

    摘要翻译: 本发明涉及用于飞机结构的自动紧固的便携式方法。 本发明将采用两个主要元件来定位和安装通过皮肤的紧固件。 内部和外部单元通过已经通过结构预钻孔的协调孔而附接到机身上并彼此分离。 飞机结构通过对准相邻的机身部件并插入对准销,与预钻孔的协调孔组装。 定位销将提供一定程度的夹紧力,将零件拉到一起,并为内部和外部真空附件履带系统提供分度。 本发明被设置为沿轨道系统横向移动,精确地定位自身,仅钻孔或锪孔,插入紧固件,并固定,即压住铆钉,或者沿着螺纹螺母倒下,然后将其自身重新定位到下一个紧固件 位置并重复该过程。

    Lap splice mini-riveter system and method for using the system
    7.
    发明公开
    Lap splice mini-riveter system and method for using the system 有权
    系统和方法铆接

    公开(公告)号:EP0917920A2

    公开(公告)日:1999-05-26

    申请号:EP98203998.4

    申请日:1998-11-26

    IPC分类号: B21J15/10

    摘要: The present invention relates to a portable process for automated fastening of aircraft structures. The invention will employ two primary elements for locating and installing through-the-skin fasteners. Inside and outside units are attached onto an airframe and indexed to each other through coordination holes that have been pre-drilled through the structure. The aircraft structure is assembled with the pre-drilled coordination holes by aligning adjacent airframe parts and inserting alignment pins. The alignment pins will provide a degree of clamping to pull the parts together and provide indexing for inside and outside vacuum attachment track systems. The invention is equipped to traverse along the track system, accurately position itself, and drill only or countersink a hole, insert a fastener, and fasten, i.e., upset a rivet, or run down a threaded nut, then reposition itself to the next fastener location and repeat the process.