圆锥滚子贯穿式超精研加工特性分析

发布时间：2018-04-01 04:41

本文选题：圆锥滚子　切入点：贯穿式超精研　出处：《轴承》2017年06期

【摘要】：基于圆锥滚子贯穿式超精研基本规律,计算油石与滚子周向接触弧长,建立动态有效磨刃数模型及未变形切削厚度模型,分析关键参数对周向接触弧长、动态有效磨刃数及未变形切削厚度的影响。分析结果表明:油石切入加工表面深度和滚子直径对周向接触弧长和动态有效磨刃数的影响最大且呈正相关;未变形切削厚度随切入加工表面深度的增大而增大,随滚子直径的增大而减小。基于分析结果,通过合理改变切入加工表面深度,一方面控制动态有效磨刃沿滚子轴向的分布,能够将滚子素线加工成理想的凸度形状;另一方面控制未变形切削厚度,进而使比切削能、工件表面残余应力及粗糙度等达到理想要求。
[Abstract]:Based on the basic law of cone roller penetration superfine research, the contact arc length of oil stone and roller is calculated, the dynamic effective grinding edge number model and the undeformed cutting thickness model are established, and the key parameters for circumferential contact arc length are analyzed.The influence of dynamic effective grinding edge number and undeformed cutting thickness.The results show that the depth of the cutting surface and the diameter of the roller have the greatest influence on the circumferential contact arc length and the dynamic effective grinding edge number, and the undeformed cutting thickness increases with the depth of the cutting surface.It decreases with the increase of roller diameter.Based on the analysis results, by reasonably changing the depth of the cutting surface, on the one hand, by controlling the distribution of the dynamic effective grinding edge along the roller axis, the roller prime line can be machined into an ideal convex shape; on the other hand, the undeformed cutting thickness can be controlled.Thus, the specific cutting energy, surface residual stress and roughness of the workpiece can meet the ideal requirements.
【作者单位】：河南科技大学机电工程学院;
【基金】：国家自然科学基金项目(51475145;U1404517)
【分类号】：TG580.68;TH133.33

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