FORGING METHOD

PROBLEM TO BE SOLVED: To prevent underfill from occurring in a workpiece after forged, despite of the abrasion of a forging die due to change over time. SOLUTION: The invented forging method comprises three processing steps. The first step (S11) is to specify a region of the workpiece in which the c...

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Bibliographic Details
Main Authors KOBAYASHI TAKESHI, INADA TAKESHI, OGOSHI SHUZO, MIYAWAKI KAZUHISA, HIGAKI SHUJI
Format Patent
LanguageEnglish
Published 04.02.2010
Subjects
FORGE FURNACES
FORGING
HAMMERING
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PRESSING METAL
PUNCHING METAL
RIVETING
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To prevent underfill from occurring in a workpiece after forged, despite of the abrasion of a forging die due to change over time. SOLUTION: The invented forging method comprises three processing steps. The first step (S11) is to specify a region of the workpiece in which the cross-sectional area of the workpiece forged by the forging die after the changeover time becomes larger than that of the workpiece forged by the forging die before the changeover time. The second step (S14) is to measure the abrasion amount of the region of the forging die which touches the specified region of the workpiece. In the third step (S18) the distance between the cope and drag of the forging die is lessened if the measured abrasion amount exceeds the threshold value. If the abrasion amount exceeds the threshold value, the distance between the cope and drag of the forging die is lessened so that underfill in the workpiece can be prevented. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20080190222