EXTRACTOR FOR SPIRAL THREADED INSERT WITHOUT TRUNNION Russian patent published in 2017 - IPC B25B27/14 B25B27/30 

FIELD: machine engineering.

SUBSTANCE: extractor comprises a mandrel with a front end section in the form of a threaded rod, a rotary grip having a drive section and a support section. The mandrel has a rod section and a cylindrical tubular rod section. The rod and tubular rod sections are provided with a fastening groove for engaging with the rotary grip. The rotary grip is secured in the fastening groove, a support section is fixed for turning to the mandrel by a turning rod, and the tubular rod section is provided with a shifting means effecting on the support section of the rotary grip. Wherein the shifting means can effect on the support section by moving the gripping section outwards in radial direction of a threaded rod in such a way, that a hook section formed in the gripping section of the rotary grip, elastically interacts with the groove of the end threaded section of a spiral threaded insert without the trunnion placed on the blank surface.

EFFECT: simplicity of the insert structure and improved convenience in use.

4 cl, 9 dwg