Patent ID: 9539627
Date: 2017-01-10
CPC Classifications: B21B

Claim:
1. A pilger rolling mill with a roll stand linearly moveable back and forth along a movement direction, the pilger rolling mill comprising: a crank mechanism including a crankshaft rotatably supported about an axis of rotation, the crankshaft having a crank pin spaced at a radial distance from the axis of rotation, wherein the crankshaft is a crank wheel, the crank pin being spaced on the crank wheel at a radial distance from the axis of rotation of the crankshaft, the crank wheel having a width in a direction parallel to the axis of rotation of the crankshaft, wherein a compensation mass is arranged inside the width of the crank wheel; a push rod having a first end and a second end, whereby the first end of the push rod is pivotably fastened to the crank pin, and whereby the second end of the push rod is pivotably fastened to the roll stand, such that during operation of the pilger rolling mill a rotary movement of the crankshaft is converted into a linearly oscillating movement of the roll stand; and a compensation shaft rotatably supported about an axis of, the compensation shaft including a distribution of mass that is not rotationally symmetrical relative to its axis of rotation and a counter-mass, whereby the crankshaft and the compensation shaft are connected to one another by a transmission so that a rotation of the crankshaft leads to a rotation of the compensation shaft, the axis of rotation of the crankshaft and the axis of rotation of the compensation shaft being spaced at a distance from each other in a direction vertical to the direction of movement of the roll stand.