Apparatus for manufacturing forged crankshaft
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United States of America Patent
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-
Nov 10, 2020
Grant Date -
May 31, 2018
app pub date -
May 13, 2016
filing date -
May 14, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for manufacturing a forged crankshaft includes a pair of upper and lower dies and a first tool. The pair of dies deforms first excess portions and thereby thickens both side portions of a rough crank arm, in a region near a rough pin adjacent thereto. The first tool is fitted in an open space made in the pair of dies, and is capable of coming into contact with a rough-journal-facing surface of the rough crank arm, except the side portions in the region near the adjacent rough pin. The first pair of dies and the first tool have first guides to guide the first tool from a retracting position to a contacting position. The first guides include a first guide disposed on at least one of an upper surface and a lower surface of the first tool.
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