7 CNC machine tools 04 special issue through acceptance @ Ma

Published on 2019-07-02

7 CNC machine tools 04 special issue through acceptance
Published: January 12, 2016

  According to the Ministry of Equipment Division of the overall arrangement, 04 special office recently organized experts to complete the acceptance number 04 specific tasks, the following are some of the topics related to metal cutting machine tools reported acceptance of the situation.   Precision CNC vertical circle closed hydrostatic rotary grinder developed: the subject undertaken by Beijing Guangyu Ltd. Dacheng CNC machine tools, participating units are: Beijing Information Science and Technology, China Institute of Metrology, Beijing Aerospace CNC Ltd., Xi'an Aero Engine Shares Limited. Developed Φ1000mm and Φ1200mm two sizes 3 prototype, hydrostatic guideway and hybrid bearing, torque direct-drive turntable diameter jump 0.001mm, turret indexing accuracy of 1 arc second, grinding roundness of 0.8μm, the accuracy of certain breakthrough.   Five-axis high-speed, precision CNC tool grinder: the subject assume Wuhan Machine Tool Plant, the participating units are: Shanghai Haig CNC technology companies, Wuhan Huazhong Numerical Control Co., Huazhong University of Science and Technology. Developed a five-axis CNC tool grinder dedicated CNC system, using the Shanghai Haig CNC tool grinding technology companies dedicated software, developed the workpiece and the grinding wheel line detection technology, maximum turning diameter of 350mm, maximum grinding length of 250mm. Linear axis positioning accuracy 0.005mm, the rotation axis positioning accuracy 0.003 degree.   Large CNC crankshaft grinder cut point tracking: the subject undertaken by Shanghai Machine Tool Works Ltd., the participating units are: Shanghai University, Shanghai Jiao Tong University. Carried out following performance grinding wheel cutting point tracking, multi-axis synchronous drive, large parts follower support, on-line measurement of dynamic compensation, grinding and many other software technology research, the development of prototypes and static pressure direct drive technology, grinding diameter / grinding length -Φ1000 / 5000mm, grinding shaft diameter roundness 0.010mm, Ra0.32μm, workpiece weight 10t, undertaker prototype has been successfully applied for the user grinding large crankshafts.   High precision ball screw and nut sets of grinding equipment: the subject undertaken by Shanghai Machine Tool Works Ltd., the participating units are: Shanghai Jiaotong University, Shanghai Polytechnic University in Shanghai University. Launched a direct-drive motor and match the stiffness of the structure, grinding chatter control, on-line detection and error compensation, grinding condition monitoring, grinding process expert system technology research, developed a ball screw for precision grinding nut grinder grinder and supporting each one.   High-speed five-axis gantry rack boring and milling machining centers: the subject undertaken by Jinan Machine Tool Group Company, participating units have Beijing University of Aeronautics and Astronautics. To carry out the whole structure optimization static and dynamic stiffness, high feed Synchronous control and error compensation, multi-axis machining programming techniques, development of prototypes using self-developed direct-drive double swing angle milling head, milling head spindle speed of up to 18000-24000r / min, Z-axis moving speed of 36m / min. X / Y / Z axis positioning accuracy of 0.012 / 0.008 / 0.008mm.   DLTT large thin-walled rotor speed precision CNC lathe parts: the subject undertaken by Dalian Machine Tool Group Co., Ltd., the participating units are: Institute of Physical and Chemical Engineering of Nuclear Industry, Dalian high gold CNC Holdings Limited and Tianjin University. For the nuclear industry a key member of the special thin wall machining process requirements for special NC system, machining tooling, cutting tools and inspection systems research and development, the research team developed two special lathe, to meet the user a special processing technology of thin-walled parts Claim.   Five-axis CNC grinding blades: the subject undertaken by Qinchuan Machine Tool Group AG, the participating units are: Shenyang Liming Aero-Engine (Group) Co., Ltd., Dongfang Electric Group, Dongfang Steam Turbine Co., Ltd., China Southern Airlines Industry (Group) Co., Ltd. . Key Technology Research conducted 11 aviation turbine blades and vanes generation process optimization, developed eight sets of test platform, launched a dual direct drive shaft A key component, high-speed spindle grinding and other research, trial out of three prototypes.