问题描述：
Structure model of the drilling system
The structure of a micro-drilling machine can be simplified as shown in Fig.1.In Fig.1,spindle A is supported by two identical isotropic bearings in radial direction;spindle A and drill clamp C–D is connected by shaft B;micro-drill E–F is fixed in the clamp D.Drill part with the screw slots is taken as uniform shaft F by equivalent of the bending stiffness.Structure dimensions and parameters of the model are shown in Table 1.The drilling process is considered in three cases[4]for analyzing:(a)a drill does not contact the workpiece;(b) a drill just contacts the workpiece;(c)a drill tip penetrates the workpiece.
The structure of a micro-drilling machine can be simplified as shown in Fig.1.In Fig.1,spindle A is supported by two identical isotropic bearings in radial direction;spindle A and drill clamp C–D is connected by shaft B;micro-drill E–F is fixed in the clamp D.Drill part with the screw slots is taken as uniform shaft F by equivalent of the bending stiffness.Structure dimensions and parameters of the model are shown in Table 1.The drilling process is considered in three cases[4]for analyzing:(a)a drill does not contact the workpiece;(b) a drill just contacts the workpiece;(c)a drill tip penetrates the workpiece.
问题解答：
我来补答展开全文阅读