FACILITY FOR SPRING HARDENING BY AGEING IN COMPRESSED CONDITION Russian patent published in 2010 - IPC F16F1/06 B21F35/00 

FIELD: machine building.

SUBSTANCE: facility consists of cartridge, wherein insertions and tested between insertions spring are installed, and of puncheon. The puncheon is made with ball surface contacting ball surface of an upper insertion. The upper insertion rotates relative to axis of the cartridge, travels along axis of the cartridge and deviates with its axis from the axis of the puncheon. The upper insertion is attached to the puncheon by means of a screw with a washer. The lower insertion is rigidly joined with the immobile cartridge.

EFFECT: simplification of design and reduced number of structure components.

3 cl, 1 dwg