BTA深孔加工轴线偏斜机理及防走偏技术研究

发布时间：2018-04-11 03:31

本文选题：ANSYS + 深孔加工　；参考：《中北大学》2017年硕士论文

【摘要】：随着我国工业化进程的进一步发展,对深孔类零件的要求也不断提高,而深孔加工孔的轴线是否发生偏斜是衡量工件深孔加工质量好坏的一个重要指标。由于深孔加工工艺的特殊性,加工过程难以监测,在钻削加工时,钻头钻杆极容易出现走偏的现象,从而导致深孔的轴线偏斜过大,致使深孔工件质量不合格。所以能否在加工过程中防止钻头钻杆出现走偏的现象,是目前提高深孔加工工件质量的关键之一。论文分析研究了现代深孔加工技术在国内外的发展现状,总结了BTA深孔加工系统的优点与缺陷。对深孔钻削加工过程中轴线发生偏斜的机理进行了深入的研究。建立了各种因素引起的钻头钻杆走偏的力学模型,进行了理论分析并计算其偏斜量。使用solidworks软件对钻头钻杆进行了三维建模,然后利用ANSYS Workbench有限元分析软件对钻头钻杆系统进行静力学特性分析和动力学特性分析。提出了一种防止钻头钻杆走偏的方法,设计了一种安装在钻杆上的辅助支撑装置,并讨论了该支撑装置在理论上的可行性。对安装有辅助支撑装置的钻头钻杆系统再次利用Workbench软件对其进行静力学和动力学特性分析,并与之前不加支撑装置时的分析结果进行比较,验证了该支撑装置的效果。本文最终通过设计的支撑装置,有效的缓解了深孔钻削加工过程中孔轴线偏斜的问题,对深孔工件质量和加工效率的提高有着重要的参考价值。
[Abstract]:With the further development of China's industrialization process, the deep parts of the requirements is also rising, and the axial hole deflection whether deep hole machining is an important index to measure the quality of deep hole processing. Because of the particularity of deep hole machining process, machining process difficult to monitor, in the drilling process, the drill pole prone to deviate phenomenon, which leads to the hole axis deviation is too large, resulting in the failure of deep hole workpiece quality. So can prevent the drill deflection phenomenon occurs in the process of processing, is one of the key to improve the quality of the workpiece. The deep hole processing development study of modern deep processing technology at home and abroad. Summarizes the advantages and disadvantages of BTA system. The deep hole processing in deep hole drilling process in the mechanism of axis deflection are studied. The factors which cause the establishment The drill Zoupian mechanical model is theoretically analyzed and calculated the deflection. Using SolidWorks software for 3D modeling of drill, and then analyze the characteristics and dynamic analysis of static characteristics of drill system using ANSYS finite element analysis software Workbench. This paper proposes a method to prevent the drill away. The design of an auxiliary supporting device installed in the drill pipe, and discussed the feasibility of the supporting device in theory. The installation of drill system auxiliary supporting device again for static and dynamic analysis on the characteristics of using Workbench software, and before without analysis of support device to compare the results, verify the the supporting device effect. Finally the design of the supporting device, effectively alleviate the deep hole drilling hole axis deflection problem of There is an important reference value for the improvement of the quality of the deep holes and the improvement of the processing efficiency.

【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG52

【参考文献】