Rolling tool

A rolling tool for the roller finishing of bearing surfaces of a crankshaft which is pivotable around a crankshaft axis, the rolling tool comprising:

• a finishing roller head;
• and
• a support roller head;
• wherein the finishing roller head has a roller finishing roller and a pressure roller mounted in a finishing roller head housing and supporting the roller finishing roller;
• wherein the support roller head has two supporting rollers which are mounted in a supporting roller housing and with which the crankshaft can be supported against a rolling force acting on the crankshaft through the roller finishing roller;
• wherein the roller finishing roller is guided on all sides in a roller cage;
• wherein the finishing roller head has a finishing roller head frame in which the finishing roller head housing is mounted such that it is pivotable around a first pivot axis which is perpendicular to the crankshaft axis and parallel to a tangent on a working side of the roller finishing roller, or the support roller head has a support roller frame in which the support roller housing is mounted such that it is pivotable around a second pivot axis which is perpendicular to the crankshaft axis and parallel to the first pivot axis and around a third pivot axis which is perpendicular to the crankshaft axis and perpendicular to the first pivot axis.

A rolling tool for the roller finishing of bearing surfaces of a crankshaft which is pivotable around a crankshaft axis, the rolling tool comprising:

• a finishing roller head;
• and
• a support roller head;
• wherein the finishing roller head comprises a finishing roller head frame, a finishing roller head housing, a roller finishing roller, a pressure roller, and a roller cage;
• wherein the roller finishing roller and the pressure roller are mounted in the finishing roller head housing;
• wherein the roller finishing roller is guided on all sides by the roller cage;
• wherein the support roller head comprises a support roller frame, a support roller housing, and two supporting rollers;
• wherein the two support rollers are mounted in the support roller housing and are operable to support the crankshaft against a rolling force acting on the crankshaft through the roller finishing roller;
• wherein one of (i) the finishing roller head housing is mounted in the finishing roller head frame such that the finishing roller head housing is pivotable around a first pivot axis that is perpendicular to the crankshaft axis and parallel to a tangent on a working side of the roller finishing roller and (ii) the support roller housing is mounted in the support roller frame such that the support roller housing is pivotable around a second pivot axis which is perpendicular to the crankshaft axis and parallel to the first pivot axis, and around a third pivot axis which is perpendicular to the crankshaft axis and perpendicular to the first pivot axis;
• and
• wherein the first pivot axis is defined by a secant passing through the crankshaft and being a distance of less than 10 millimeters from the tangent on the working side of the roller finishing roller.

A rolling tool for the roller finishing of bearing surfaces of a crankshaft which is pivotable around a crankshaft axis, the rolling tool comprising:

• a finishing roller head;
• and
• a support roller head;
• wherein the finishing roller head comprises a finishing roller head frame, a finishing roller head housing, a roller finishing roller, a pressure roller, and a roller cage;
• wherein the roller finishing roller and the pressure roller are mounted in the finishing roller head housing;
• wherein the roller finishing roller is guided on all sides by the roller cage;
• wherein the finishing roller head housing is mounted in the finishing roller head frame such that the finishing roller head housing is pivotable around a first pivot axis that is perpendicular to the crankshaft axis and parallel to a tangent on a working side of the roller finishing roller;
• wherein the support roller head comprises a support roller frame, a support roller housing, and two supporting rollers;
• wherein the two support rollers are mounted in the support roller housing and are operable to support the crankshaft against a rolling force acting on the crankshaft through the roller finishing roller;
• wherein the support roller housing is mounted in the support roller frame such that the support roller housing is pivotable around a second pivot axis which is perpendicular to the crankshaft axis and parallel to the first pivot axis, and around a third pivot axis which is perpendicular to the crankshaft axis and perpendicular to the first pivot axis;
• and
• wherein the second pivot axis is defined by a secant passing through the crankshaft and one of (i) a plurality of support points of the crankshaft;
• and (ii) the support rollers in close proximity to a plurality of support points of the crankshaft.