| 摘要 |
FIELD: mining. ^ SUBSTANCE: equipped with round shank end cutter is held by means of slit clamping sleeve in aperture of cutter holder and is designed to rotate. Also the clamping sleeve is equipped with holding elements stamped and/or pressed inside; the elements are distributed along perimetre of the clamping sleeve and enter into a circular slot made in the round shank end. Two stamped edges directed across lengthwise axis of the clamping sleeve isolate holding elements. Also stamped edges run along part of perimetre of the clamping sleeve and are arranged at distance one from another corresponding to width of the circular slot in the round shank end of the cutter. Notably, the holding elements form coaxial concave centring section facing the convex bottom of the circular slot. ^ EFFECT: increased operation life of cutter due to increased reliability of fastening. ^ 15 cl, 4 dwg |
