Deep hole machining is widely applied in many fields.The deviation of drilling hole is an important index to evaluate deep hole machining,and its quality directly determines the machining quality of deep hole parts.In order to study the influence of deep hole tool system on the deflection of hole axis in the process of deep hole machining,a contact model of guide pair is established based on the bending displacement theory of straight beam and the curved surface Hertz contact theory of elastoplastic mechanics,considering the bending effect of drill pipe with medium weak stiffness and the contact squeezing effect of guide bar on hole wall.The influence of drilling depth on the contact area of guide pair is ana-lyzed by the contact model of guide pair.The results obtained by the model are basically consistent with those obtained by drilling test.
关键词
错齿BTA钻/导向副接触模型/接触区域/钻削深度
Key words
intersecting tooth BTA drill/guide sub contact model/contact area/drilling depth
维普
万方数据