TUBE COLD ROLLING MILL Russian patent published in 2014 - IPC B21B13/18 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy. Pilger mill comprises moving working stand with beating bed and to drive working rolls equipped with wedge mechanisms of their position adjustment, planetary-crank drive of working stand reciprocation with crank translation, housing with stand guides and rack drive of rolls. Higher strength of working stand is ensured by invariable lateral clearance in rack-gear pairs without additional adjustment at roll position variation which is possible due to bearing fitted on stand drive crank at stand bed tail section. Note here that second bearing of working stand running gear is composed of two rolls in contact with housing guide, one roll on axles in every frame of bearing bed. Roll drive racks in the area of engagement with the shaft drive gears are arranged in contact with support rolls fitted in the housing secured from external end of working roll bearing support pad on drive gear location side. Note here that free end of racks is articulated with lever mounted at the bed with working stand guides to displace the rack along rolling line.

EFFECT: higher hardness of working mill.

4 cl, 4 dwg