高压涡轮盘关键特征车削接刀工艺

Machining Traces Technology during Turning Key Features of High Pressure Turbine Disc

根据高压涡轮盘设计中包含的半封闭斜腔可达性较差及粉末冶金高温合金切削阻力大的特点,通过切削仿真预测粉末冶金高温合金表面硬化层的厚度。通过FGH96棒材切削试验推断出刀具的实际切削深度与理想切削深度之间的关系,并开展试验验证。根据零件图纸要求调整刀具的切削深度,一次性完成接刀。应用该方法可以得到可靠且稳定的接刀效果,对于测量困难、有接刀要求、难切削材料零件的接刀加工具有较好的借鉴意义。

According to the poor accessibility of the semi-closed inclined cavity included in the design of the high-pressure turbine disk and the large cutting resistance of the powder metallurgy super-alloy,the thickness of the surface hardened layer of the powder metallurgy super-alloy is predicted through cutting simulation.Then through the FGH96 bar cutting test,the relationship between the actual cutting amount and the ideal cutting amount of the tool is deduced,and the experimental verification is carried out.The cutting amount of the tool is adjusted according to the requirements of the part drawing,and the tool pick-up is completed at one time.The application of this method can obtain a reliable and stable tool pick-up effect,and has good reference significance for the processing of other parts that difficult to measure,have tool pick-up requirements,and use difficult-to-cut materials.