METHOD FOR ROLLING AROUND NON-RIGID AND ECCENTRIC SHAFTS Russian patent published in 2005 - IPC

FIELD: plastic metal working, namely surface plastic deforming of cylindrical surfaces of eccentric, non-rigid shafts and screws with large pitch and small eccentricity value such as screws of oil production pumps.

SUBSTANCE: method provides effect of smoothing and strengthening with use of deforming members mounted in brackets of holder and being in the form of tore like rollers with doubled shaped bands formed by two profiled radiuses. Band formed by maximum radius is smoothing one; band formed by minimum radius is strengthening one. Said rollers are mounted in bearing assemblies on axles with cone ends engaging with reciprocal inner cone surfaces of rings-nuts screwed with use of left-hand and right-hand threads into respective opening of holder. Holder is arranged between two discs, both having central opening and it is freely mounted by means of several tension springs. One disc is rigidly secured to housing; other disc is rigidly secured to end of first disc by means of spacing sleeves and screws. Holder is provided with peripheral handle preventing rotation of holder and supported by means of roller with axle arranged between discs. Said tension springs are mounted on spacing sleeves.

EFFECT: enlarged manufacturing possibilities, lowered cost price, enhanced efficiency, improved quality and accuracy of products.

8 dwg, 1 ex