Device and method for boring center hole of crankshaft
AssigneeKomatsu Machinery Corp.
InventorAkihiro Yoshimoto
Life of this patent
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Abstract
A center hole boring device is configured to bore a center hole for working on each of two end surfaces of a material crankshaft. The center hole boring device includes a main clamper, a measurement chuck and a working section. The main clamper is configured to fixedly hold the material crankshaft. The measurement chuck is configured to hold two ends of the material crankshaft so that a shape of the material crankshaft is measured while keeping a posture of the material crankshaft held by the main clamper. The working section is configured to bore a center hole on each of the both end surfaces of the material crankshaft held by the main clamper.
Claims7
A center hole boring device configured to bore a center hole for working on each of two end surfaces of a material crankshaft, the center hole boring device comprising:
- a main clamper configured to fixedly hold the material crankshaft;
- a measurement chuck configured to hold two ends of the material crankshaft so that a shape of the material crankshaft is measured while keeping a posture of the material crankshaft held by the main clamper;
- and
- a working section configured to bore a center hole on each of the both end surfaces of the material crankshaft held by the main clamper.
A center hole boring method of boring a center hole for working on each of two end surfaces of a material crankshaft, the center hole boring method comprising:
- causing a main clamper to fixedly hold the material crankshaft;
- causing a measurement chuck to hold two ends of the material crankshaft under a condition that the material crankshaft is held by the main clamper;
- measuring a shape of the material crankshaft held by the measurement chuck;
- causing the main clamper to fixedly hold the material crankshaft again under a condition that the material crankshaft is held by the measurement chuck after measurement of the shape of the material crankshaft;
- and
- boring a center hole on each of the two end surfaces of the material crankshaft held by the main clamper.
Dependencies are inferred from the claim text.