数控端铣弧齿锥齿轮的刀背与轮齿干涉避免方法

发布时间：2018-01-08 00:25

本文关键词：数控端铣弧齿锥齿轮的刀背与轮齿干涉避免方法　出处：《中国机械工程》2016年14期 　论文类型：期刊论文

【摘要】：在五轴数控机床上端铣加工弧齿锥齿轮时,为了避免中凹盘铣刀背锥面与对侧齿面发生干涉,提出了基于刀具和齿轮结构的干涉避免方法。通过确定加工轨迹上刀背圆锥面最突出母线与对侧齿面的位置关系,保证刀具背锥面沿进给方向的法曲率小于对侧齿面法曲率,优化确定刀具边缘厚度和背锥角,实现了端铣齿面时刀背不干涉对侧齿面。最后,以一对弧齿锥齿轮副的小轮为例,通过比较虚拟加工模型和理论模型,验证了所提干涉避免方法的有效性。
[Abstract]:In order to avoid interference between the back cone surface and the opposite side tooth surface of the middle concave milling cutter when milling the arc bevel gear at the upper end of the five-axis NC machine tool. An interference avoidance method based on cutter and gear structure is proposed. The position relationship between the most prominent busbar on the tool back cone surface and the opposite tooth surface on the machining track is determined. The normal curvature along the feed direction of the back cone of the tool is less than the normal curvature of the opposite side tooth surface. The thickness of the tool edge and the back cone angle are optimized to realize the non-interference of the tool back to the opposite side tooth surface during the end milling. Finally. Taking the small wheel of a pair of arc bevel gear pairs as an example, the effectiveness of the proposed interference avoidance method is verified by comparing the virtual machining model with the theoretical model.
【作者单位】：河南科技大学;中国一拖集团有限公司;
【基金】：国家自然科学基金资助项目(51405135;51575161);国家自然科学基金-河南省联合基金资助项目(U1504519;U1504522) 河南省高等学校重点科研项目(14A460007)
【分类号】：TH132.41;TG659
【正文快照】： 0引言大型弧齿锥齿轮是船舶与海工装备推进器、陆地和海上钻机转台、通用航空等领域的关键零件,其加工方法主要有两种:展成法[1-2]和曲面加工法[3-4]。展成法要求专用盘铣刀和轮坯直径相当。当齿轮直径较大时,刀具直径过大,造成刀具制造困难、机床主轴受力恶劣、无法保证加工

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