共查询到20条相似文献,搜索用时 218 毫秒
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《机械工程材料》2016,(1)
基于有限元分析软件ABAQUS,对SiCp/Al复合材料的三维铣削过程进行有限元模拟,基于正交试验得到了三向铣削力的模拟结果,再对模拟得到的铣削力进行多元线性回归分析得到了铣削力的多元回归方程,将通过回归方程计算得到的铣削力与试验得到的进行对比,论证了SiCp/Al复合材料铣削有限元模拟的可行性;分析了主轴转速、进给量、轴向切深对铣削合力的影响程度及影响趋势。结果表明:对铣削力影响程度从大到小依次为进给量、轴向切深、主轴转速;铣削合力随着进给量和轴向切深的增大而增大,随着主轴转速的增大而减小;通过回归方程计算得到的三向铣削力与试验值的误差都在10%范围内,说明利用有限元软件进行铣削模拟是可行的。 相似文献
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以切削深度,切削宽度,主轴转速,每齿进给量作为输入,铣削力在x、y、z三个方向的分量作为输出,建立了Elman铣削力的神经网络预测模型,预测结果与期望输出较为接近,说明Elman神经网络适用于铣削力的预测. 相似文献
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针对微细铣削不同于常规铣削的特点,建立了微单元正交切削模型,分析瞬时刀具受力情况。以切削深度,切削宽度,主轴转速,每齿进给量作为输入,铣削力在x、y、z三个方向的分量作为输出,建立了MATLAB瞬时铣削力的预测模型。同时分析了模拟结果与实验数据之间产生误差的原因,对细微铣削加工的协调问题进行深入分析与综合研究具有重要的理论意义和现实意义。 相似文献
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通过试验分别研究了铣削用量、刀具几何参数、工件材料硬度、刀具磨损情况和PCBN材料的晶粒粒度对铣削力的影响,得出了铣削力的经验公式,并提出了降低铣削力的具体途径。 相似文献
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MinHwan Lee DongBae Kang SeongMin Son JungHwan Ahn 《Journal of Mechanical Science and Technology》2008,22(12):2454-2463
A worm and worm wheel gearing is widely used in a geared motor unit for the convenience and safety of an automobile. For mass
production of a high quality worm, the current rolling process is substituted with the milling process. The milling process
offers comparatively accurate machining quality and high production capacity for worm manufacturing. Moreover, since the milling
process enables the integration of all operations of worm manufacturing on a CNC lathe, production efficiency can be remarkably
improved. However, there are several important factors to be considered for producing high quality worms such as cutting force,
tool-workpiece interference, and others. Planetary milling and side milling are generally applied to machine worms. In this
study, the cutting characteristics of worm machining on an automatic lathe are investigated for two types of milling processes
and those processes are compared with each other. A tool-tip trajectory model based on tool-workpiece interaction is proposed,
and then tool-workpiece interference and cutting force are simulated with the model. The simulation results are verified through
numerous experiments. The experimental results show the cutting characteristics of each milling process and the efficiency
for mass production of a high quality worm.
This paper was recommended for publication in revised form by Associate Editor Dae-Eun Kim 相似文献
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在铣削加工中,采用顺铣还是逆铣方式是影响加工表面粗糙度及刀具切削寿命的重要因素之一.铣削方式的选择应视零件图样的加工要求,工件材料的性质、零件在加工中装夹的受力特点以及机床、刀具等条件综合考虑顺铣与逆铣在铣削加工中的应用.在现代加工技术中,各单位对于顺铣与逆铣的应用情况也不尽相同.因此需要掌握顺铣与逆铣的知识和在加工中的应用及切削力的分析. 相似文献