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C620-1车床尾座套筒的锥孔,由于原设计没有限制钻头或铰刀在锥孔内的旋转装置,在钻、铰孔时,往往钻具在锥孔内打转,将锥孔拉伤使钻具的锥柄损坏,甚至咬死,致使钻具退不出来而造成事故。同时,使钻、铰孔困难并破坏了尾座锥孔中心对车床主轴回转中心线的等高性和同轴度。将会使加工件的锥度误差增大和钻头铰刀拆断。为了避免上述的弊病,我们作了
C620-1 lathe tailstock sleeve taper hole, the original design does not limit the drill or reamer rotary bore within the taper hole, drilling, reaming, drilling tools often in the taper hole rotation, the taper hole strain So that the taper shank drill damage, or even killed, resulting in drill out of the accident caused. At the same time, make drilling, reaming difficult and destroyed the center of the tail cone centering on the lathe spindle centerline contour and concentricity. Will make the workpiece taper error increases and bit reamer disassembly. In order to avoid the above shortcomings, we made