TOOL FOR FINISHING-STRENGTHENING TREATMENT Russian patent published in 1996 - IPC

FIELD: plastic metal working. SUBSTANCE: invention may be used for treatment of holes of nonrigid parts. Tool for finishing-strengthening treatment includes case, sources of magnetic field anchored on case, polar steel cylindrical cheeks forming ring chamber, deforming members mounted in ring chamber for spatial movement. Cylindrical surfaces of polar cheeks have generating lines in the form of periodic closed curve. Both cheeks are installed with similar angular position of generating lines. Tool is provided with inserts of nonmagnetic material placed into recesses of generating lines of cheeks. Due to this deforming members have same time of acceleration and deceleration which enables hollows arranged regularly and having equal depth to be formed in treated surface. EFFECT: increased quality of treatment thanks to enhanced regularity of hollows formed in surface of parts. 2 dwg