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
Methods and systems for determining the reliability of transaction
Printed wiring board with reinforced insulation layer and manufacturing method thereof
Synchronization of web applications and media
Methods and devices for creating, compressing and searching binary tree
Products for animal use including humans having a certificate verifying at least one of efficacy or safety, and methods of providing such certificates
Reuse of static image data from prior image frames to reduce rasterization requirements
Power consumption management in a MIMO transceiver and method for use therewith
  Randomly Featured Patents
Electronic part and method of producing the same
Control architecture for ATM networks
Fuel system
Aerosol paint compositions
Templatized commands in disc authoring
Differential arrangement magnetic memory cell
Headlamp
Multicolor image forming apparatus and image making device
Foldable chair
Communication interface between a radio control transmitter and a computer data bus