钛合金蜂窝芯航空构件数控加工工艺研究

CNC Machining Process of Titanium Alloy Honeycomb for Aviation Component

以航空钛合金蜂窝芯为对象，研究了钛合金蜂窝的数控加工工艺，提出了蜂窝芯的装夹与固持，加工掉块、倒边，型面精度控制，零件检测等方面问题；为了解决这些问题，从固持填充物、切削参数和加工刀具3个主要方面进行研究，给出了填充方案、数控加工切削参数和推荐使用的刀具种类；接着，在兼顾加工效率和质量的原则下，对钛合金蜂窝芯数控加工切削方法进行了介绍，利用台阶铣方式进行粗加工，以便快速去除大余量，半精、精加工采用行切方式进行，以保证加工质量；最后，对蜂窝芯试验件的加工结果进行检测，统计数据显示，此工艺方法能够控制蜂窝加工误差在0．2mm以内，具有加工效率高、质量好等优点，

In this paper, CNC machining process for titanium alloy honeycomb core is studied, It raises the questions of clamping and holding the titanium alloy honeycomb, losing pieces, chamfering edge, controlling the precision of profile, part detection, etc. The filling method, recommended cutting parameters and tool types are given by the research on the holding fillings, cutting parameters and cutting tools for these questions. Then, on principle of good processing efficiency and quality, the CNC machining cutting method for titanium alloy honeycomb core is introduced. To remove the allow- ances effectively, the cavity milling method is used for rough cutting of titanium honeycomb core; to assure the machining quality, the zigzag milling method is used for semi-finish cutting and finish cutting of titanium honeycomb core. Finally, the processing results of some honeycomb core test pieces are detected. The statistical data shows that the machining error of titanium honeycomb core is within 0.2mm, which means that with the advantages in high processing efficiency and good surface quality, the process method mentioned in this paper is workable.