Abstract：
The vibration of the micro-milling tool presents a significant chaotic vibration phenomenon, which has a great influence on the tool life and part machining precision, and is one of the basic problems restricting the improvement of machining efficiency and machining accuracy in micro-milling. To overcome the difficulty of the traditional vibration measurement method with the online measurement of micro-milling tool multi-dimensional vibration, a three-dimensional (3D) measurement method of the micro-milling tool is proposed based on multi-fiber array coding, which converts the tool space motion into a decoding process of the optical coding array employing the tool modulating the multi-fiber array encoding. A 6 × 6 optical fiber array was designed, and a 3D motion platform for micro-milling tools was built to verify the characteristics of the optical fiber measurement system. The measurement results show that the measuring accuracy of the system reached 1 µm, and the maximum linear error in x-, y-, and z-direction are 1.5%, 2.58%, and 2.43%, respectively; the tool space motion position measurement results show that the maximum measurement error of the measuring system was 3.4%. The designed system has unique coding characteristics for the tool position in the space of 100 µm3. It provides a new idea and realization means for the online vibration measurement of micro-milling tools.
摘要：
微铣削刀具的振动呈现出明显的混沌振动现象,对刀具寿命和零件加工精度有很大影响,是制约微铣削加工效率和加工精度提高的基本问题之一。为了克服传统振动测量方法难以在线测量微铣削刀具的多维振动,提出了一种基于多光纤阵列编码的微铣削刀具三维测量方法,其使用调制多光纤阵列编码的工具将工具空间运动转换为光学编码阵列的解码过程。设计了一种6×6的光纤阵列,并搭建了微铣削刀具的三维运动平台,验证了光纤测量系统的特性。测量结果表明,该系统的测量精度达到1µm,和x-中的最大线性误差，-,z方向为1.5%，2.58%,和2.43%，刀具空间运动位置测量结果表明,测量系统的最大测量误差为3.4%。所设计的系统对于100µm3空间中的工具位置具有独特的编码特性。为微铣削刀具振动在线测量提供了新的思路和实现手段。
