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Development of high-precision CNC closed static pressure rotary table vertical table grinding machine: The project is undertaken by Beijing Guangyu Dacheng CNC Machine Tool Co., Ltd. The participating units are: Beijing Information Science and Technology University, China Metrology Academy, Beijing Aerospace CNC Co., Ltd., Xi'an Aerodynamics Co., Ltd. Limited. Developed 3 prototypes of Φ1000mm and Φ1200mm, using static pressure guide rail and dynamic and static pressure bearing, torque direct drive rotary table diameter jump 0.001mm, rotary table indexing accuracy 1 arc second, grinding roundness 0.8μm, certain precision breakthrough.
Five-axis linkage high-speed, precision, CNC tool grinding machine: This project is undertaken by Wuhan Machine Tool Plant. The participating units are: Shanghai Haige CNC Technology Co., Ltd., Wuhan Huazhong CNC Co., Ltd., Huazhong University of Science and Technology. The special CNC system for five-axis CNC tool grinding machine was developed. The special software for tool grinding of Shanghai Haige CNC Technology Co., Ltd. was used. The technology of workpiece and grinding wheel on-line detection was developed. The maximum rotary diameter is 350mm and the maximum grinding length is 250mm. The linear axis positioning accuracy is 0.005mm, and the rotational axis positioning accuracy is 0.003 degrees.
Large CNC cut-point tracking crankshaft grinding machine: This project is undertaken by Shanghai Machine Tool Works Co., Ltd. The participating units are: Shanghai University and Shanghai Jiaotong University. The grinding follow-up performance grinding wheel tangent point tracking, multi-axis synchronous drive, large workpiece follow-up support, on-line measurement dynamic compensation, grinding process software and other technical research were carried out. The prototype was developed using direct drive and static pressure technology. Grinding diameter/grinding length—Φ1000/5000mm, grinding shaft diameter roundness 0.010mm, Ra0.32μm, workpiece weight 10t, the unit application prototype has successfully grinding large crankshafts for users.
High-precision ball screw and nut complete grinding equipment: This subject is undertaken by Shanghai Machine Tool Works Co., Ltd. The participating units are: Shanghai Jiaotong University, Shanghai Lili University of Technology, Shanghai University. The technical research on the stiffness matching of the direct drive motor and the structure, the vibration flutter control, the on-line detection and error compensation, the grinding state monitoring, the grinding process expert system, etc., and the ball screw for grinding the first-order precision were developed. One grinding machine and one nut grinding machine.
Elevated five-axis linkage high-speed gantry boring and milling machining center: The project is undertaken by Jinan No. 2 Machine Tool Group Co., Ltd., and the participating units are Beijing University of Aeronautics and Astronautics. The technology research on dynamic and static stiffness optimization, high-speed feed synchronous control and error compensation, multi-axis linkage machining programming, etc. was carried out. The prototype was developed by self-developed direct-drive double-pendulum milling head. The spindle milling head speed can reach 18000-24000r. /min, Z axis moving speed reached 36m / min. The X/Y/Z axis positioning accuracy is 0.012/0.008/0.008mm.
DLTT large-scale thin-walled revolving parts high-speed precision CNC lathe: This project is undertaken by Dalian Machine Tool Group Co., Ltd. The participating units are: Nuclear Industry Physical and Chemical Engineering Research Institute, Dalian Gaojin Numerical Control Group Co., Ltd., Tianjin University. Aiming at the special process requirements of a key part of the nuclear industry for thin-wall machining, research and development of special CNC systems, processing tools, machining tools and inspection systems, the research team developed two special lathes to meet the special processing technology of thin-walled parts for users. Claim.
Five-axis linkage blade CNC grinding machine: This subject is undertaken by Qinchuan Machine Tool Group Co., Ltd. The participating units are: Shenyang Liming Aero Engine (Group) Co., Ltd., Dongfang Electric Group Dongfang Steam Turbine Co., Ltd., China Southern Aviation Industry (Group) Co., Ltd. . 11 key technologies such as optimization of air blade and power turbine blade processing technology were carried out, and 8 sets of test platforms were developed. Key components such as double direct drive A-axis and high-speed electric spindle were developed, and 3 prototypes were produced.
Abstract According to the overall arrangement of the Equipment Department of the Ministry of Industry and Information Technology, the Specialized Office of the 04 recently organized experts to complete the acceptance of a number of 04 special tasks. The following is a report on the acceptance of some of the metal cutting machine tools. Development of high-precision CNC closed static pressure rotary table vertical table grinding machine: the subject...
According to the overall arrangement of the Equipment Department of the Ministry of Industry and Information Technology, the Specialized Office of the 04 recently organized experts to complete the acceptance of a number of 04 special tasks. The following is a report on the acceptance of some of the metal cutting machine tools.