Cross-roll forging machine
AssigneeSato Tekko Co., Ltd.
InventorSeiji Tada
Life of this patent
Estimating the term…
Abstract
Electric resistance heating means is embedded in a forging tool so that the temperature thereof may be maintained at a desired forging temperature. Therefore the present invention makes it possible to forge light metal alloy workpieces such as aluminum workpieces which have been hitherto considered to be difficult to be forged by rotary forging machines. In addition, better quality of forgings as well as considerable improvement of productivity may be ensured. Thus, reduction of labor and material in a forging process can be attained.
Claims5
In a cross-roll forging machine of the type comprising means for firmly gripping and rotating a cylindrical workpiece, a pair of holders each adapted to move in opposed relation in a direction transverse to the axis of said cylindrical workpiece and a pair of forging tools mounted on said tool holders, respectively, for forging said workpiece into a desired shape, the improvement comprising
- a. electric resistance heating means embedded in each of said forging tools for heating the same,
- b. control means for controlling the amount of heat applied by said heating means to said forging tools to control the temperature distribution over each of said forging tools, and
- c. a plurality of grooves cut and equidistantly spaced apart from each other of the supporting surface of each of said tool holders.
Dependencies are inferred from the claim text.