| 摘要 |
FIELD: mandrels that may be used for working in lathes and grinding machine tools. ^ SUBSTANCE: mandrel body has supporting spherical surface, threaded portion. Threaded insert in the form of three sectors fixed by means of mounting members is mounted in body of mandrel. Threaded portion engages with ring having along its inner diameter centering collars and along outer diameter - cone surface for engaging with sectors. The last are in contact with spherical surface and they are used for engaging with worked threaded part. ^ EFFECT: enhanced accuracy of fixing and working threaded parts. ^ 2 dwg, 1 n |
