Method and Device for Processing Crankshaft and Burnishing Roller for Crankshaft
First Claim
1. A method of machining a crankshaft, comprising the steps of placing a pair of burnishing rollers in opposite relation to each other across a shank of a crankshaft therebetween, gripping the shank of the crankshaft with outer circumferential surfaces of said burnishing rollers, and rotating said crankshaft and said burnishing rollers to rollingly press said shank.
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Accused Products
Abstract
A pair of burnishing rollers formed in a roughly disk shape are linearly disposed oppositely to each other on both sides of the shaft part of a crankshaft. The crankshaft is rotated about its axis by the rotatingly driving action of a rotating driving source (M). The pair of burnishing rollers are displaced in a direction apart from each other while the shaft part of the crankshaft is held by the outer peripheral surfaces of the pair of burnishing rollers to apply a rolling to the crankshaft.
12 Citations
12 Claims
- 1. A method of machining a crankshaft, comprising the steps of placing a pair of burnishing rollers in opposite relation to each other across a shank of a crankshaft therebetween, gripping the shank of the crankshaft with outer circumferential surfaces of said burnishing rollers, and rotating said crankshaft and said burnishing rollers to rollingly press said shank.
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4. An apparatus for machining a crankshaft, comprising:
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holding mechanisms for holding both axial ends of a crankshaft so that the crankshaft is rotatable; and a pair of burnishing rollers disposed in opposite relation to each other across a shank of the crankshaft therebetween; wherein the shank of the crankshaft is gripped by outer circumferential surfaces of said burnishing rollers, and said crankshaft and said burnishing rollers are rotated to rollingly press said shank. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A crankshaft burnishing roller for burnishing a shank of a crankshaft by rollingly pressing the shank, comprising:
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a pair of burnishing rollers disposed in opposite relation to each other across the shank of the crankshaft therebetween; each of said burnishing rollers being of a substantially disk-like identical shape and having an outer circumferential surface for rollingly pressing said shank, said outer circumferential surface having a plurality of ridges having respective crests axially spaced at equal intervals; said crests of adjacent two of said ridges being spaced from each other by a distance S which is greater than the inside diameter T of an oil hole defined in said shank. - View Dependent Claims (11, 12)
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Specification