A rolling tool for the roller finishing of bearing surfaces of a crankshaft is pivotable around a crankshaft axis, with a finishing roller head and with a support roller head. In order to prevent damage to the guide mechanisms, the roller finishing roller is guided on all sides in a roller cage and
A rolling tool for the roller finishing of bearing surfaces of a crankshaft is pivotable around a crankshaft axis, with a finishing roller head and with a support roller head. In order to prevent damage to the guide mechanisms, the roller finishing roller is guided on all sides in a roller cage and the finishing roller head has a frame wherein it is mounted pivotably 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. Additionally or alternatively, the support roller head comprises a support roller frame in which the support roller housing is mounted pivotably around a second pivot axis perpendicular to the crankshaft axis and parallel to the first pivot axis, and around a third pivot axis perpendicular to the crankshaft axis and perpendicular to the first pivot axis.
대표청구항▼
1. 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; anda support roller head;wherein the finishing roller head comprises a finishing roller head frame, a finishing roller hea
1. 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; anda 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 both (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; andwherein 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. 2. The rolling tool according to claim 1, wherein the roller cage has a strip-shaped opening whose width on a side of the roller cage facing away from the finishing roller head is smaller than the diameter of the roller finishing roller. 3. The rolling tool according to claim 1, wherein the finishing roller head and the support roller head are mechanically joined together by at least one coupling element. 4. The rolling tool according to claim 3, wherein the coupling element is a pin which is attached to the support roller head and which is designed to engage in a centering hole in the finishing roller head. 5. The rolling tool according to claim 1, wherein the roller finishing roller has a cylindrical shape with a diameter of between 1 mm and 20 mm and a length which is greater than the width of the bearing surface. 6. The rolling tool according to claim 1, wherein the pressure roller and the support rollers have cylindrical, concave or spherical peripheral surfaces corresponding to a cylindrical, spherical or concave shape of a bearing surface to be processed. 7. The rolling tool according to claim 1, wherein the roller cage comprises a bronze, an unhardened steel or a hardened steel. 8. The rolling tool according to claim 1, wherein the roller finishing roller comprises a hardened steel or a hard metal. 9. The rolling tool of claim 1 wherein the second pivot axis is defined by a secant passing through the crankshaft and a plurality of support points of the crankshaft. 10. The rolling tool of claim 1 wherein the second pivot axis is defined by a secant passing through the crankshaft and the support rollers in close proximity to a plurality of support points of the crankshaft. 11. 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; anda 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; andwherein 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. 12. The rolling tool of claim 11 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. 13. The rolling tool according to claim 11, wherein the roller cage has a strip-shaped opening whose width on a side of the roller cage facing away from the finishing roller head is smaller than the diameter of the roller finishing roller. 14. The rolling tool according to claim 11, wherein the finishing roller head and the support roller head are mechanically joined together by at least one coupling element. 15. The rolling tool according to claim 14, wherein the coupling element is a pin which is attached to the support roller head and which is designed to engage in a centering hole in the finishing roller head. 16. The rolling tool according to claim 11, wherein the roller finishing roller has a cylindrical shape with a diameter of between 1 mm and 20 mm and a length which is greater than the width of the bearing surface. 17. The rolling tool according to claim 11, wherein the pressure roller and the support rollers have cylindrical, concave or spherical peripheral surfaces corresponding to a cylindrical, spherical or concave shape of a bearing surface to be processed. 18. The rolling tool according to claim 11, wherein the roller cage comprises a bronze, an unhardened steel or a hardened steel. 19. The rolling tool according to claim 11, wherein the roller finishing roller comprises a hardened steel.
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이 특허에 인용된 특허 (7)
Heimann, Alfred, Apparatus for deep rolling of recesses and radii of crankshaft journal bearings.
Fischer Heinrich (Munich DEX) Schmidkunz Walter (Eichenau DEX) Spensberger Johann (Poing DEX), Apparatus for orienting the position of a machine tool carriage relative to a stationary machine part.
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