飞机座舱有机玻璃钻（扩）孔工艺的研究

 以自然冷却无需使用压缩空气和冷却剂的一次钻（扩）孔,作为飞机座舱玻璃孔的工艺。孔的质量优于现行工艺的成品孔。钻（扩）孔后无需退火以消除加工应力。该工艺适用于定向和不定向有机玻璃,粘涤纶钢的有机玻璃组合件。

STUDY OF DRILLING (EXPANDING) TECHNOLOGY ON PMMA USED IN AIRPLANE CANOPY

This article introduces a new technology for drilling （expanding） hole on PMMA （polymethylmethacrylate） used in airplane canopy. The process is finished with one stroke, without using compressed air or other coolant. The surface quality of the hole by this method is better than that by the method currently used without cracks and broken edges , The machining stress induced by drilling （expanding） is reduced by 8096,σmr<1.0MPaThe resistance to solvent crazing in the solution of isopropyl alcohol （30CCCC）is increased by more than 20 times. The technology is suitable for making hole on the stretched and non-stretched PMMA, and the components bonded with polyester reinforced plastics. The drilled （expanded） hole is not subjeted to annealing for releasing the residual stress.