往复式切割器偏心轮曲柄摆杆机构运动仿真
Movement Simulation of Eccentric Wheel Crank Swing Link Mechanism of Reciprocating Cutter
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摘要: 阐述了往复式切割器的驱动机构——偏心轮曲柄摆杆机构的基本结构与工作原理,运用矢量方法对机构的运动规律进行了分析和理论推导,得出了机构的运动方程;利用动力学仿真软件ADAMS对该机构进行了运动仿真分析,得到了运动曲线图和对机架的激振力大小及变化规律。仿真结果表明:当输入转速为400 rmin时,切割器的运动周期是0.15 s,行程76 mm,速度为-1.5~1.73 ms,加速度为-69.5~68.6 ms2;切割器运动时对机架产生的作用力为简谐载荷,当输入转速为469 rmin时,载荷大小为1 393 N。通过理论与仿真分析,为偏心轮曲柄摆杆机构的优化设计和动力学分析提供了理论依据。Abstract: The basic structure and working principle of eccentric wheel crank swing link mechanism,that was driving mechanism of reciprocating cutter,were expounded.Motion law of this mechanism was analyzed and deduced theoretically by vector method.And equations of motion were obtained.Motion curve fig and variation law of vibrating force over body frame were obtained by using dynamics simulation software ADAMS on the mechanism of motion simulation analysis.Simulation results showed that when input speed was 400 rmin,the cycle of cutter motion was 0.15 seconds,the distance of running was 76 mm,speed was -1.5~1.73 ms,and acceleration was -69.5~68.6 ms2.Force generated for cutter movement was harmonic load and when input speed was 469 rmin,the force was 1 393 N.It provided a theoretical basis for optimal design and dynamic analysis of eccentric wheel crank swing link mechanism by theoretical analysis and simulation.
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Keywords:
- Reciprocating cutter /
- Eccentric wheel /
- Crank swing link mechanism /
- ADAMS software /
- Simulation
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