FIELD: process engineering.
SUBSTANCE: invention relates to machine building and may be used for hardening of bores. Proposed device comprises mandrel with deforming elements, that is, balls arranged in screw groove and retained by plates. Groove start and end are communicated for removal and circulation of balls. Channel has two curved radial branches made from tubes, and straight branch located at center of mandrel axial line.
EFFECT: expanded processing performances, higher quality and efficiency.
6 dwg
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