摘要
针对带锯床锯切过程的力学问题,通过静力平衡方程和微段受力分析,提出了一种新的带锯床锯切过程力学模型,建立了初始预紧力与临界工作状态、初始预紧力与正常工作状态下各力学参量的关系.基于实验数据,验证了力学模型的正确性,研究了锯切过程中各力学参量的相互关系及影响因素.研究表明,带锯床锯切系统在锯切过程中,初始预紧力决定了带锯条的临界锯切力;正常工作过程中,带锯条紧边段拉力和松边段拉力的比值随锯切力的变化而变化;锯切过程的力学模型及相关结果为带锯床的结构设计提供了重要的理论基础.
In order to study the mechanical parameters of sawing process for band sawing machine, a new mechanical model of sawing process was developed by the static equilibrium equation and the micro-segment mechanical analysis. The relationship between initial pretension and the mechanical parameters in the critical sawing stage and the real sawing stage was also studied. The mechanical model of sawing process was verified by experiment. The relationship and influence factors of each mechanical parameter in sawing process were studied. The results showed that the critical sawing resistance force is determined by the initial pretension. The ratio of the tight edge segment tension with the slack side tension varies with the sawing resistance force. The mechanical model of the sawing process and its results provide an important theoretical foundation of the structural design of band sawing machine.
出处
《浙江工业大学学报》
CAS
2013年第4期375-379,共5页
Journal of Zhejiang University of Technology
关键词
带锯床
力学建模
张紧力
锯切抗力
band sawing machine
mechanical modeling
tension
sawing resistance force
