METHOD FOR RESTORING THE DIMENSIONS OF THE WORKING PART OF A WORN BROACH Russian patent published in 2022 - IPC B23P6/00 B23D43/02 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to mechanical engineering and can be used to restore the dimensions of an accurate cutting tool, such as flat broaches while strengthening them. Plastic deformation of the broach is carried out, which ensures an increase in the height of the teeth of the broach with compensation for worn dimensions, subsequent dimensional processing of the teeth, which ensures the restoration of their dimensions and geometry. In this case, plastic deformation is carried out at the base of the teeth, and after plastic deformation, the broach is subjected to magnetic-pulse processing, which ensures the healing of microcracks formed as a result of deformation of the material of the broach and its hardening. Magnetic-pulse processing is carried out under modes that ensure the occurrence of eddy currents in the broach material ranging from 80 kA to 180 kA.

EFFECT: invention restores the dimensional and geometrical characteristics of the working part of a worn cutting tool while increasing its wear resistance.

9 cl, 2 dwg, 1 ex