KNOCK-DOWN MANDREL FOR SHAPING OF HOLLOW ARTICLES

摘要

FIELD: machine building.SUBSTANCE: dismountable mandrel for shaping of hollow articles can be used for making thin-wall hollow parts of modern technology materials. Dismountable mandrel comprises mounting pin 1 and shaping segments 2. Mandrel with closed magnetic system comprises winding 3 of direct current of flexible wire inside shaping segments 2 made of ferromagnetic material and ferromagnetic grains 4 and supported by mounting rod 1. Shaping segments 2 have protrusions and slots.EFFECT: simplified assembly-disassembly operations, increased efficiency, high accuracy of geometrical parameters of working surface when exposed to temperature and shrinkage stresses.1 cl, 4 dwg