Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method of making a forging in closed-dies










Image Number 8 for United States Patent #4967584.

A closed-die forging having an annular flat surface portion and a corner portion at an outer periphery of the annular flat surface portion is made by a method consisting of a rough forging process and a finish forging process. In the rough forging process, a rough forged product is shaped so as to have an annular flat surface portion smaller in outer diameter than the first mentioned annular flat surface portion and a conical surface portion at an outer periphery of the second mentioned annular flat surface portion. The conical surface portion is so shaped as to extend increasingly outwards as it extend in the same direction of movement of a punch of a rough forging die for performing a forming operation. In the finish forging process, the conical surface portion is pushed by a punch of a finish forging die in the same direction as the rough forging product is pushed by the first mentioned punch in the rough forging process and thereby formed together with the second mentioned annular flat surface into the first mentioned annular flat surface portion perpendicular to the direction of movement of the second mentioned punch.








 
 
  Recently Added Patents
Light emitting device and light emitting device package
Tuning peg for a stringed instrument
Heterogeneous language data typing without executable regeneration
High-performance AHCI interface
Pre and post-paid real time billing convergence system
Relative pose estimation of non-overlapping cameras using the motion of subjects in the camera fields of view
Polymorphic forms of 3-(1-{3-[5-(1-methyl-piperidin-4-ylmethoxy)-pyrimidin-2-yl]-benzyl}-6-oxo- -1,6-dihydro-pyridazin-3-yl)-benzonitrile hydrochloride salt and processes of manufacturing t
  Randomly Featured Patents
Disposal apparatus
Method for the prevention of blocking in linear low density polyethylene films
Aqueous personal care cleanser comprising specific lipid composition
Reliable synchronous inter-node communication in a self-routing network
Machine gun
Paper feeder
Treatment of ocular hypertension with class I calcium channel blocking agents
Write jog value determination for a disk drive
Motor torque control
Wafer and method of producing same