MULTIDIE MACHINE FOR BILLETS TRIMMING Russian patent published in 2015 - IPC B21C1/12 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy. Proposed multidie comprises frame with load-bearing pipes secured thereat, at least two traction drums to run in pipes in bearings driven by engine with step-down reduction gearbox and gear-box, and drawing tools. Said frame represents a truck frame while the drive of drums is composed of assembly units and parts of automotive transmission. Note here that step-down reduction gearbox is composed by truck transmission main gear with 1^st and 2^nd axles making the step-down reduction gear output shafts. Gear-box represents the truck gear-box. Note also that 1^st traction drum is engaged with 1^st axle while 2nd traction drum is engaged with 2^nd axle by links to make axles transmit torque and equal torques at traction drum shafts by means of the truck transmission differential mechanism. Besides, bypass roller is arranged between traction drums to set wire path from 1^st drum to drawing tool arranged ahead of 2^nd traction drum. Transmission elements are welded to aforesaid frame. Bearing pipes are fitted at load-bearing branch pipes to transfer working loads from said drum to said frame.

EFFECT: better drawing characteristics plus possibility of mill manufacture and operation at small-scale enterprises at low costs.

3 cl, 2 dwg