When using reamer in inclined NC lathe, attention should be paid to whether the coaxiality fault of machine tool spindle, reamer and workpiece hole can meet the demand. When the coaxiality fault mentioned above can not satisfy the accuracy of reaming, reamer should adopt the method of lifting and floating clamp, adjust the central orientation of reamer and reaming, and reach the accuracy of reaming.

     The commonly used lifting reamer chuck loads the reamer into a sleeve capable of lifting. Because the cooperation space between sleeve outer diameter and main body (or taper shank) is large and there is certain space for the cooperation of machine tool axle pin, the torque and feed force are transmitted through pin and spherical head of support block during reaming, reamer can adjust the coaxiality of reamer and aperture by slight deviation and inclination. After the hinges are finished, the reamer should withdraw from the outside of the hole and stop the machine. Otherwise, there are knife marks on the hole wall, and the hole can be brushed when the reamer withdraws.

     In the process of reaming, excessive heat accumulation will also cause deformation of workpiece and reamer or cause aperture expansion. Therefore, it is necessary to select appropriate cutting fluid in reaming to reduce conflict and announce heat, so that cutting can be washed out in time together.