在车床上钻中间孔方法(国外英文资料).docVIP

在车床上钻中心孔方法(国外英文资料) Central hole drilling method of.Txt21 spring flowers open in the lathe! If you have ever been in winter, you will have spring! If you have faith, then spring must be far away; if you are paying, then one day you will have a full circle of flowers. In the lathe drilling center hole method,.Txt Taiwan day not recover, I day only 4 class! If the sun doesnt come out, I wont go to work; if it comes out, Ill go on sleeping! Drill a center hole in a lathe, Drilling the center hole on the bar material whose diameter is smaller than the bore diameter of the main shaft of the lathe. At this point, the bar should be inserted into the inner hole of the spindle as much as possible to increase the rigidity of the workpiece. After correction, the clamping end car flat; the center drill clamping in the drill chuck clamping, when the taper shank drill chuck and tailstock taper can direct the combination, can be used directly into the. If less than the taper shank hole, it must be in the middle of a transition sleeve can increase with the. When the center drill is installed, drive the workpiece to rotate, even shake the tailstock handwheel to move the center drill to realize the feed. After drilling to the desired size, stay a little while the center hole is trimmed and rounded, and then retract. Drilling center fL on workpiece whose diameter is greater than the diameter of the bore of the spindle and the length of the spindle is larger. At this time, only one end of the workpiece is clamped with a chuck, and the position of the workpiece can not be reliably ensured. Use the center frame to level the flat face and drill the center hole. The method of drilling the center hole is the same as the former method. 4) attention should be paid to drilling center}L To prevent the center drill from breaking, the diameter of the cylindrical part of the center drill is smaller, and the fracture is easy to break when the cutting force is too far. Common causes of breakage and