To ensure the effective detection of metal conductive objects, the end face of the transducer was machined mechanically to remove part of the shell and form a 0.10 mm insulating step. Finite element simulation using ANSYS/LS-DYNA revealed that the stress on the ceramic plate during radial cutting was 56.35 MPa, significantly lower than that encountered during axial cutting, which reached 216.25 MPa. Furthermore, both stress and deformation of the ceramic plate in the piecewise superimposed cutting process were markedly reduced. By combining theoretical analysis and cutting experiments, a three-time superimposed radial feed process was developed, and the removal method of metal residual burrs was optimized, addressing the frequent damage to the matching and transmitting end face of the transducer and delamination with piezoelectric ceramics during the cutting process. The results of this study have great significance for the application and promotion of piezoelectric ultrasonic transducers.