The problems of the bobbin capacity and the high speed unwinding yarn taking off the ring or not during the winding of the ring spinning machine were dealt with. The mathematical model of the ring winding machine moti...The problems of the bobbin capacity and the high speed unwinding yarn taking off the ring or not during the winding of the ring spinning machine were dealt with. The mathematical model of the ring winding machine motion law was analyzed and optimized.Through the analysis and study of the movement rule of bottom bobbins and the ring spinning frame spool forming, the mathematical model of active bottom bobbins forming movement was established. Also,the mathematical model of bobbins formation was simulated and optimized. The concept of "controlled nail"was put forward. On this basis,the mathematical model of the current tube forming motion was optimized. The experimental results demonstrated that the theory of"controlled nail"met the high-speed spinning winding theory. The theory of "controlled nail "not only did the capacity of the bobbin increase,but also the spinning speed and efficiency are both improved,reducing the high-speed winder winding off. This research could provide a theoretical basis for the development of a new ring spinning frame.展开更多
销轨属于煤矿井下工作面刮板输送机关键部件,是采煤机运行轨道,随着开采煤层厚度增大,采煤机功率、机型、重量不断增大,采煤机需要更大牵引力满足使用,更大采高采煤机牵引力要求4 000 k N以上,就需要更高强度销轨。为解决这一难题,加大...销轨属于煤矿井下工作面刮板输送机关键部件,是采煤机运行轨道,随着开采煤层厚度增大,采煤机功率、机型、重量不断增大,采煤机需要更大牵引力满足使用,更大采高采煤机牵引力要求4 000 k N以上,就需要更高强度销轨。为解决这一难题,加大销轨节距,销轨节距增加到201 mm,成型工艺采用整体模锻,并进行销轨齿形方面的优化满足强度要求,在建立销轨的三维模型基础上进行有限元分析,更加精准地反应出销轨在承受力的情况下的应力及应变,进而更加真实地指导实际生产。展开更多
基金National Basic Research Program of China(973 Program)(No.2010CB334711)
文摘The problems of the bobbin capacity and the high speed unwinding yarn taking off the ring or not during the winding of the ring spinning machine were dealt with. The mathematical model of the ring winding machine motion law was analyzed and optimized.Through the analysis and study of the movement rule of bottom bobbins and the ring spinning frame spool forming, the mathematical model of active bottom bobbins forming movement was established. Also,the mathematical model of bobbins formation was simulated and optimized. The concept of "controlled nail"was put forward. On this basis,the mathematical model of the current tube forming motion was optimized. The experimental results demonstrated that the theory of"controlled nail"met the high-speed spinning winding theory. The theory of "controlled nail "not only did the capacity of the bobbin increase,but also the spinning speed and efficiency are both improved,reducing the high-speed winder winding off. This research could provide a theoretical basis for the development of a new ring spinning frame.
文摘销轨属于煤矿井下工作面刮板输送机关键部件,是采煤机运行轨道,随着开采煤层厚度增大,采煤机功率、机型、重量不断增大,采煤机需要更大牵引力满足使用,更大采高采煤机牵引力要求4 000 k N以上,就需要更高强度销轨。为解决这一难题,加大销轨节距,销轨节距增加到201 mm,成型工艺采用整体模锻,并进行销轨齿形方面的优化满足强度要求,在建立销轨的三维模型基础上进行有限元分析,更加精准地反应出销轨在承受力的情况下的应力及应变,进而更加真实地指导实际生产。
