【摘要】 航空发动机叶片钛合金材料在数控磨抛加工中容易发生烧伤及黏附现象,针对常用的TC4材料开展了超硬磨料柔性抛光轮数控抛光试验研究。分析了超硬磨料柔性抛光轮抛光参数中转速、进给速度、预压量及行距对抛光去除深度及抛光后试件表面粗糙度的影响规律并通过正交试验分析了各抛光参数影响的主次关系。确认了钛合金试件抛光表面黏附物质成分,并同时分析了表面黏附物的形成原理。给出了TC4钛合金材料在超硬磨料柔性抛光轮数控抛光过程中工艺参数的选择策略,为TC4材料的航空发动机叶片和整体叶盘在超硬磨料柔性抛光轮数控抛光过程中提供理论依据和技术基础。更多还原

【Abstract】 Titanium alloy material of aero-engine blade is prone to burn and adhesion in CNC grinding and polishing. In this paper, the CNC polishing experiment of titanium TC4 using flexible polishing wheel with superhard abrasive is carried out. The effects of polishing speed, feed speed, compression and row pitch on polishing removal depth and surface roughness are studied and analyzed. And primary and secondary relationship of polishing parameters are explored by the orthogonal tests. Finally, the selection strategy of process parameters for polishing TC4 is given, which can provide a theoretical and technical basis for TC4 polishing of aero-engine blade and blisk using flexible polishing wheel with superhard abrasive.更多还原