A Direct-drive Turntable Design And Testing Technology Research

The key components of CNC machining center development in China is relatively slow, few varieties and related research institutions are not many. The accuracy and performance of technical standard is not very high. Especially the rotary worktable can only meet the needs of low-end CNC machining center facilities, and measure the overall level of CNC machining center direct drive turntable is still dependent on imports. To meet our country by the "made in China" to"China to create a" strategic transformation, achieve "2025 the grand goal of manufacturing in China, it is necessary to make our country get rid of dependence import and monopoly of foreign high-end CNC machining center, must be to break through the core technology of high-end CNC machining center high performance critical components. Carry out direct drive turntable technology research, to meet the requirements of the advanced CNC machining center of high speed, high accuracy and high flexibility and variable cutting load working conditions, thus making it have excellent dynamic response characteristics, has an important guiding significance and basic role.In-depth analysis and study of domestic and foreign direct drive turntable manufacturing technology status and development trend, draw lessons from international famous manufacturers of the latest technology, for direct drive turntable involves the research contents and the key technology, the project is based on bear unit existing research foundation and processing and manufacturing capabilities, analysis of current technology of direct drive turntable and the requirements of the subject gap, aimed at international similar products the latest developments,the subject to direct drive technology index of the platform as the research object, completes the overall program design, through modeling analysis and test analysis, to solve the direct drive NC rotary key technology.This topic is in Qinghai machine take the "high-end CNC machine tools and basic manufacturing equipment" special major science and technology "of the whole bed type precision horizontal machining center(2013ZX04005- 011" sub topic of Direct Drive NC table task, is the key part of the paper. In the plant design and development of a direct drive turntable as the objectof the direct drive turntable scheme design and structure design, force thermal coupling analysis and geometric error modeling and verification, proved its feasibility.