This paper introduces the basic situation and purpose of the Siemens 840D CNC system teaching and research machine constructed by the machine shop machine repair office building, describes the wide applications of the 840D teaching and research machines in the industrial field of teaching and training, technology exchange, board testing, program verification, failure analysis, etc, as well as reducing cost and increasing efficiency for the company to create a considerable economic value.%介绍了机加车间的机修办公室构建西门子840D数控系统教研机的基本情况和目的,阐述了840D教研机在工业现场的教学培训、技术交流、板卡检测、程序校验、故障分析等方面的广泛应用,以及为公司降本增效创造了可观的经济价值.
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