Patent ID: 8485762

Claim:
An internal broaching tool for internal broaching of internal tooth systems having a profile root and profile flanks, said internal broaching tool comprising: (a) a shaft; (b) a tooth set part disposed adjacent to the shaft counter to a broaching direction, said tooth set part having a plurality of broaching teeth disposed in rows, one behind the other, said broaching teeth comprising profile root blades for pre-broaching of a profile, assigned to one another; (c) a calibration part disposed to follow the tooth set part counter to the broaching direction, said calibration part having a plurality of calibration broaching teeth disposed in rows, one behind the other; (d) an end piece; and (e) a relaxation part disposed between the tooth set part and the calibration part; wherein each calibration broaching tooth comprises a guiding flank without a clearance angle or with a negative clearance angle less than or equal to 0.1° and a cutting flank having a positive clearance angle; wherein in adjacent rows of the calibration broaching teeth on the calibration part each guiding flank and cutting flank is alternately offset relative to one another on the calibration broaching teeth disposed one behind the other counter to the broaching direction, and each guiding flank that follows counter to the broaching direction is associated in terms of position, shape, and size, with a corresponding cutting flank in a leading row.