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
Method and system for producing fluoride gas and fluorine-doped glass or ceramics
Approaching object detection system
Method and system for acquiring support capability of mobile terminal by base station side system
High performance design rule checking technique
Resonant oscillator with start up and shut down circuitry
Produce container and lid assembly
Portable electronic device housing including hinge
  Randomly Featured Patents
Submarine escape suit assemblies
Recirculating sheet feeding apparatus
Combined lipstick blotter pad and lipstick container
Method and apparatus for reducing effect of tool eccentricity in a borehole on multi-axial induction measurements
Tool holder for a drilling or a chiseling device
Table
Ghost canceller
Pier construction
Aircrane
Wireless control system and method in an illumination network