个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:机械工程学院
电子邮箱:guodm@dlut.edu.cn
Study on the CNC grinding machine tool for the radome
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论文类型:期刊论文
发表时间:2004-01-01
发表刊物:12th Grinding and Machining Conference
收录刊物:SCIE、CPCI-S、Scopus
卷号:259-2
页面范围:677-681
ISSN号:1013-9826
关键字:radome; inner surface; precision measurement; CNC grinding machine tool
摘要:The radome is a revolution shell part made of hard and brittle material and has 3-D complex curved surface. The electric thickness of the radome is an important electromagnetic performance index, determined by the geometric thickness and the dielectric constant of the material. For the semi-finished radome, its electric thickness can usually not meet the requirement of the design owing to the error of the geometric thickness and the non-uniformity of the dielectric constant of the material. Therefore, it is necessary to precisely grind the inner surface of the radome to compensate the electric thickness error by altering the geometric thickness. To this end, a three-axis CNC precision measuring and grinding machine tool, which is controlled by a industrial personal computer (IPC) and a programmable multi-Axis controller (PMAC), was designed and developed. In order to avoid installation errors caused by separate loading operation and to ensure the grinding accuracy, the measuring and grinding process of the radome are accomplished in the same installing position on the machine tool in a manner of "once-loading and two-step-operation". First, the inner surface is precisely measured to set up a process datum and then, the finish grinding process is performed based on the datum and the required grinding allowance in the machine tool. It is shown in practice that the radome ground by the machine tool satisfies the requirement for the precision of the electric thickness.