Method of manufacturing automobile door hinge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 24, 2015
Grant Date -
Oct 24, 2013
app pub date -
Jun 14, 2013
filing date -
Dec 17, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of manufacturing an automobile door hinge includes hot forging a round steel bar to form a forged workpiece including a mounting portion, an arm portion, and a column portion, and forming a shaft hole by punching the column portion by using a special die and a punch. The die has a gap formed therein so that, during punching, a slug is not generated and the column portion expands outward when the punch is pressed from a punching start point to a predetermined dimension, and a slug is generated and discharged when the punch is pressed from the predetermined dimension to a punching end point.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully