초록 ▼

Deep rolling equipment for cold working fillet radii of annular undercuts on opposite sides of main bearing and crank pin journals of an engine crankshaft while being rotatably driven. The equipment has pairs of jaws movable between an open position for receiving the crankshaft journal and a closed

Deep rolling equipment for cold working fillet radii of annular undercuts on opposite sides of main bearing and crank pin journals of an engine crankshaft while being rotatably driven. The equipment has pairs of jaws movable between an open position for receiving the crankshaft journal and a closed position for rolling the fillets thereof. The upper jaw mounts fillet rolling tools for high load rolling engagement in the annular undercuts and a lower tool on the opposing lower jaw for support of the journal. The lower tool has a pair of support rollers with annular journal support portions which contact and support the journal while the fillet radii of the undercuts on either side of the journal are being rolled. These support rollers importantly have work stabilizing annular flanges outboard of the support portion with larger diameters that ride in the undercuts and limit lateral movement of the crankshaft with respect to the rolling and support tools so that the crankshaft is not abraded or otherwise damaged by side contact of the jaws and tools with portions of the crankshaft.

대표청구항 ▼

[ What is claimed is:] [1.] A fillet rolling machine adapted for deep rolling laterally spaced annular fillets between the journals and counterweights of a crankshaft for an internal combustion engine, the machine comprising:a jaw assembly having a first facing jaw and an opposing second facing jaw,

[ What is claimed is:] [1.] A fillet rolling machine adapted for deep rolling laterally spaced annular fillets between the journals and counterweights of a crankshaft for an internal combustion engine, the machine comprising:a jaw assembly having a first facing jaw and an opposing second facing jaw, said first facing jaw having a first tool and said second facing jaw having a second tool;said first tool having at least one roller adapted to engage and deep roll the fillets of the crankshaft for relieving stress and strengthening the crankshaft;said second tool having at least two bearing and support rollers to operatively support the journal adjacent to the fillets being rolled at least one of said bearing and support rollers being a support roller unit, said support roller unit having an outer cylindrical surface for contacting and supporting said last mentioned journal and having an annular flange extending radially and outwardly from said outer cylindrical surface of said roller unit, said annular flange being adapted to fit into and coact with a crankshaft journal fillet and thereby limit lateral movement of said jaw assembly relative to the crankshaft to inhibit side contact between said jaw assembly and the tools with said crankshaft during fillet rolling operations.