The utility model relates to the technical field of needle tube pen point
processing, and discloses a needle tube pen point efficient
necking device which comprises a control mechanism, an operation groove and a base, a telescopic rod is installed at the lower end of the control mechanism, a motor is installed at the lower end of the telescopic rod, a dismounting plate is installed at the lower end of the motor, and a
spinning head is installed at the lower end of the dismounting plate; a lifting chamber is installed on the rear end wall of the base, a driving motor is installed at the upper end of the lifting chamber, and the driving motor drives a
ball screw to rotate, drives a screw sliding base to move downwards, drives a sliding frame to move downwards and drives a control mechanism to move downwards through a
motor shaft; the control mechanism controls a telescopic rod to move downwards, drives a
spinning head to move downwards and starts a motor; the
spinning head is driven to rotate, the inner wall of the needle tube pen point is subjected to strength shrinking operation, spinning of the spinning head replaces rolling of a ball, gaps are prevented from being generated during rolling operation of the ball, precision is improved, irregular deformation of the inner wall of the pen point is prevented, the
rejection rate is low, precision is sufficient, and the precision requirement is met.