FIELD: machine engineering. SUBSTANCE: a built-up broach has the mandrel 1, supporting the guide 4; changeable cutting sections 5 and sizing sections 6, backing basing ring 7. Members for basing and angular fixation are provided on respective end surfaces of the above mentioned elements; the members are in the form of dents and recesses, arranged symmetrically relative to a plane, passing through an axis of the broach, and having a downward portion near their lateral walls. The sizing section has a through rectangular groove at a side of the downward portion of the basing member. EFFECT: enhanced structure. 1 cl, 5 dwg
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