CAJ | 학술논문

针对数控机床、多轴位移台等多轴系统位移检测中存在的检测方法复杂、测量费用高等问题，利用光学自由曲面具有极大的设计自由度，可简化系统结构、提高系统性能的特点，设计开发了一种基于光学自由曲面的非接触式三维位移测量系统，用于普通机床、多轴位移台等多轴系统位移精度检测．通过设计光学自由曲面基准件，搭建实验平台，建立测量系统的数学模型，完成了测量系统的标定实验、测量系统精度验证实验和三维位移测量实验．结果表明，该测量系统精度达2.8,μm，可用于多轴系统的位移检测．
침대수공궤상、다축위이태등다축계통위이검측중존재적검측방법복잡、측량비용고등문제，이용광학자유곡면구유겁대적설계자유도，가간화계통결구、제고계통성능적특점，설계개발료일충기우광학자유곡면적비접촉식삼유위이측량계통，용우보통궤상、다축위이태등다축계통위이정도검측．통과설계광학자유곡면기준건，탑건실험평태，건립측량계통적수학모형，완성료측량계통적표정실험、측량계통정도험증실험화삼유위이측량실험．결과표명，해측량계통정도체2.8,μm，가용우다축계통적위이검측．
In the displacement measurement of multi-axis systems such as computer numerical control(CNC)machine tools and multi-axis translation stages,there exist many problems. For example,the detection methods are compli-cated and the cost is high. Regarding these problems,full use was made of the advantages of great design freedom of optical freeform surface to simplify the system and improve system performance. A method of non-contact three-dimensional displacement measurement based on an optical free-form surface was proposed to detect the accuracy of multi-axis systems such as general CNC machine tools. The optical free-form surface used as datum was designed. The experimental platform was built and the mathematical model of measurement system was established. Then,the system was calibrated and its accuracy was tested. Finally,three-dimensional displacement measurement experiments were carried out. Results show that the accuracy of the measurement system was up to 2.8,μm,and the measurement system can be applied to the three-dimensional displacement measurement of multi-axis systems.