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某型号锯铣机横梁的含间隙导轨布置方式优化

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为满足某型号锯铣机的精密加工需求,考虑导轨间隙、运动速度变化对横梁进给过程中变形量的影响,并对导轨布置方式提出改善方案.分析横梁的装配方式和受力过程,对锯铣机横梁进行三维模型简化,考虑不同的导轨布置方式,对简化模型开展静力学仿真分析,获得横梁进给至最远端的情况下横梁形变最大情况;考虑间隙对现有导轨布置方式的影响,进行刚柔耦合运动仿真分析,得出间隙值的大小对横梁的横向形变存在影响,导轨与滑块之间的间隙值越大,横梁的横向形变越明显,对纵向形变的影响不大.考虑实际工作情况,在导轨与滑块间隙为0.03 mm的前提下,对四种导轨布置方式开展动力学仿真分析,得到横梁四处测量点处的形变曲线.结果表明:横梁上下布置方式能够有效降低横梁进给过程中的形变,且静态结构稳定,横梁进给至最远端处的形变量较小,优于其他方案.研究结果为锯铣机的设计制造提供参考.
Layout optimization of clearance guide rail for beam of a certain type of sawing and milling machine
In order to meet the precision machining requirements of a certain type of sawing and milling machine,the influence of rail clearance and movement speed changes on the deformation of the beam during the feeding process is considered,and the improvement scheme of rail layout is proposed.The assembly mode and stress process of the beam are analyzed,and the three-dimensional model of the beam of the saw milling machine is simplified.Consider-ing different guide rail layout,the static simulation analysis of the simplified model is carried out,and the maximum deformation of the beam is obtained when the beam is fed to the farthest end.Considering the influence of the gap on the existing guide rail layout,the rigid flexible coupling motion simulation analysis is carried out.It is concluded that the gap value has an impact on the transverse deformation of the beam.The greater gap value between the guide rail and the slider,the more obvious the transverse deformation of the beam,and the less impact on the longitudinal de-formation.Considering the actual working situation,under the premise of the clearance between the guide rail and the slider is 0.03mm,the dynamic simulation analysis of four guide rail layout modes is carried out,and the deform-ation curves at four measuring points of the beam are obtained.The results show that:the arrangement of the beam up and down can effectively reduce the deformation of the beam in the process of feeding,and the static structure is stable.The shape variable of the beam feeding to the farthest end is small,which is better than other schemes.The research results provide reference for the design and manufacture of saw milling machine.

saw milling machinebeam deformationclearanceguide rail layoutfinite element analysis

马琳博、马晨波、张玉言、韩权、孙见君、姚遥

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南京林业大学机械电子工程学院,江苏南京 210037

南通跃通数控股份有限公司,江苏 南通 226000

锯铣机 横梁形变 间隙 导轨布置方式 有限元分析

2024

林业机械与木工设备
国家林业局哈尔滨林业机械研究所

林业机械与木工设备

影响因子:0.574
ISSN:2095-2953
年,卷(期):2024.52(3)
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