[fastener industry network] in the last ten days of December 2020, the high-end CNC machine tools, yw7232cnc gear grinding machine and yda3140 CNC direct drive dry cutting hobbing machine, in the sub project of the national science and technology major special project "demonstration project of efficient processing and assembly flexible production line for passenger car transmission assembly" participated by Chongqing Machine Tool Group, were inspected by the expert group of national machine tool quality supervision and inspection center according to the national standard and industry standard Machine tool geometric accuracy, position accuracy, performance and other aspects of all-round testing, machine tool group hobbing machine cutting accuracy reached 7, gear grinding machine grinding accuracy reached 4, successfully passed the national machine tool quality supervision and inspection center testing.

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