Crankshaft machining method
AssigneeKomatsu Machinery Corp.
InventorMasumi Shimomura
Life of this patent
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Abstract
A crankshaft machining apparatus for use in machining a crankshaft from a workpiece, includes: a bed; a pair of work heads mounted on the bed for fixedly supporting the workpiece to be machined at both ends thereof, respectively; at least one cutter head disposed between the work heads so as to be displaceable in an axial direction of the workpiece; and an inside edge cutter mounted on a said cutter head for cutting in the workpiece simultaneously a pair of counter weights of the crankshaft along their respective outer peripheries, the counter weights being located at both ends of a pin journal of the crankshaft, respectively. This arrangement has the ability to form the outer peripheries of a pair of counter weights simultaneously, and provides a markedly enhanced machining efficiency.
Claims8
A method of machining counter weights of a crankshaft from a workpiece comprising:
- fixedly supporting the workpiece at respective ends thereof with a pair of workheads mounted on a bed;
- operating at least one inside edge cutter to simultaneously cut the workpiece along respective outer peripheral portions thereof so as to simultaneously form a pair of counter weights;
- wherein said at least one inside edge cutter is disposed between said workheads so as to be displaceable in an axial direction of said workpiece;
- and
- wherein said at least one inside edge cutter comprises a pair of cutter members which are spaced apart from each other by a spacing that is approximately equal to a spacing between said pair of counter weights.
A method of machining counter weights of a crankshaft from a workpiece comprising:
- fixedly supporting the workpiece at respective ends thereof with a pair of workheads mounted on a bed;
- operating first and second inside edge cutters to simultaneously cut the workpiece along respective outer peripheral portions thereof so as to simultaneously form first and second pairs of counter weights, respectively;
- wherein said first and second inside edge cutters are disposed between said workheads so as to be displaceable in an axial direction of said workpiece;
- and
- wherein said first and second inside edge cutters each comprise a pair of cutter members which are spaced apart from each other by a spacing that is approximately equal to a spacing between the each of the first and second pairs of counter weights, respectively.
Dependencies are inferred from the claim text.