![]() – The workpiece is not clamped firmly: The rigidity of the workpiece itself cannot bear the cutting force during turning, resulting in excessive deflection, which changes the center height of the turning tool and the workpiece, resulting in a sudden increase in the cutting depth and tool pricking. During rough turning and semi fine turning, the tool tip position is about 1%d higher than the center of the workpiece. At this time, the height of the turning machine shall be adjusted in time to make its tip equal to the axis of the workpiece. In addition, the clearance between the traverse lead screw and the nut is too large, resulting in the constant automatic deepening of the cutting depth, thus lifting the workpiece and cutting. The direction of the radial force of the turning machine is the center of the workpiece. If it is too low, the chip is not easy to be discharged. ![]() – The turning tool is installed too high or too low: If the turning tool is too high, when the cutting tool reaches a certain depth, the rear tool face of the turning tool is against the workpiece, increasing the friction, and even bending the workpiece, resulting in the cutting phenomenon. – Reduce the rake angle of the trolley, repair the machine tool, adjust the screw clearance of the X axis, and use the screw clearance automatic compensation function of the CNC lathe to compensate the screw clearance of the X axis of the machine tool. ![]() – The turning tool is installed too high or too low. – The front angle of the turning tool is too large, and the clearance of the x-axis screw rod of the machine tool is large.
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