基于GC的斜面微小钻孔初期受力分析  

GC-based nalysis on the initial force of the small hole drilled on an inclined surface

作　　者：吴晓君[1] 孙树栋[2] 徐大明[1] 

机构地区：[1]西安建筑科技大学机电工程学院,陕西西安710055 [2]西北工业大学机电学院,陕西西安710072

出　　处：《西安建筑科技大学学报（自然科学版）》2005年第3期427-430,共4页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：陕西省教育厅专项科研计划项目(02JK107)

摘　　要：在精密制造业中,越来越多地需要在倾斜工作面上直接完成小孔精加工.斜面上钻孔与平面钻孔相比,由于加工初期条件差,孔的相对位置精度低,刀具更容易折损.本研究在数控磨削中心(GC)上用三自由度测力仪,通过实验,比较了斜面上钻孔与平面上钻孔在加工初期切削力的差异.文章对斜面上钻孔加工初期的受力状态进行了理论分析.理论分析的数值模拟与实验结果一致.在此基础上,分析比较了进给量、斜面倾角等参数对斜面钻孔初期受力的影响.分析模型合理地解析了斜面钻孔初期的受力现象.The There is a growing necessity for small holes to be finely drilled directlly on an inclined surface in precision manufactural industry. Drilling on inclined surface givesrise to such problems as the decrease of hole accuracy and damage of tool, comparing with the case of drilling on flat surface. In this study, the difference of thrust force between flat surface and inclined surface at the initial drilling stages was investigated by using NC Grinding Center and three-dimensional dynamometer. An analytical model is proposed based on the experiment results. From the model, the effects of the dip angle and feed rate on thrust force are estimated. The model shows reasonable result in the phenomena caused at the initial stage of drilling on the inclined surface.

关 键 词：斜面钻孔 初期状态 分析模型 

分 类 号：TH161[机械工程—机械制造及自动化]