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首页> 外文会议>Optics for EUV, x-ray, and gamma-ray astronomy V >Fabrication update on non-contact mirror slumping technology for the International X-ray Observatory mirrors
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Fabrication update on non-contact mirror slumping technology for the International X-ray Observatory mirrors

机译：国际X射线天文台镜非接触镜落体技术的制造更新

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摘要

A method of thermally shaping individual sheets of glass for the International X-Ray Observatory using porous mandrels as air bearings has been developed, which eliminates the problems of sticking and dust particle-induced distortion which plague traditional slumping methods. A detailed mathematical model of the process has been developed, allowing prediction of final glass shape based on process parameters that include air supply pressure, imperfections on the mandrel surface, glass total thickness variations and gravity vector orientation. Experiments to verify model findings are conducted under closed-loop control of pressure and apparatus tilt. Little improvement in repeatability is seen, suggesting that the error is due to unmodeled forces such as contact forces from the glass holding technique. Finally, the design process and fabrication of a third generation slumping tool is presented. In addition to scaling the design to accomodate larger flats, slumps are done horizontally to float the glass and minimize contact during the process. New capabilities of the tool include active gap measurement and control, as well as plenum air temperature monitoring.
机译：已经开发出一种使用多孔心轴作为空气轴承对国际X射线天文台进行玻璃单板热成型的方法，该方法消除了困扰传统下沉方法的粘着和粉尘颗粒引起的变形的问题。已经开发了该过程的详细数学模型，可以基于包括空气供应压力，心轴表面上的缺陷，玻璃总厚度变化和重力矢量方向在内的过程参数预测最终的玻璃形状。验证模型发现的实验是在压力和设备倾斜的闭环控制下进行的。重复性几乎没有改善，表明该误差是由于未建模的力（例如来自玻璃固定技术的接触力）引起的。最后，介绍了第三代减震工具的设计过程和制造。除了按比例缩放设计以适应较大的平面外，还可以水平滑倒以使玻璃漂浮并使过程中的接触最小化。该工具的新功能包括主动间隙测量和控制以及增压空气温度监控。

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