Stepped segmented, closed-die forging

Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

72377, B21J 1302

Patent

active

055928471

ABSTRACT:
This invention is a system for enhancing the performance of a forging press by increasing the size of the workpiece which can be effectively forged within the capacity of the forging press. The system includes the provision of a die set in which one or more of the dies is segmented, that is divided into two or more, and preferably three or more parts. The segmented die is provided with advancement means which allow each of the segments to be selectively advanced ahead of the other segments along the forging axis. The dies are installed in the forging press by mounting each die directly or indirectly to a respective die bed. In advancement means is employed to cause one of the segments to advance and be locked ahead of another segment. The workpiece is forged so that the advanced segment is a primary forging agent, that is, it transfers the vast majority of the force to the workpiece. The non-advanced segments are secondary forging agents, that is, they act only to control the reaction of other portions of the workpiece. Subsequently, the role of the segments is reversed, in steps, so that the formerly non-advance segment is advanced beyond the formerly advanced segment. The process of forging is then carried out again with the newly advanced segment or segments acting as the primary forging agent. By conducting this closed-die forging operation in this stepped manner with a segmented die, the total effective force is applied serially over several sections of the workpiece so that each section of the workpiece is effectively exposed to a greater forging pressure and, therefore, more forging work can be done on the workpiece. Conversely, a given available forging force can be used to form a greater size of workpiece.

REFERENCES:
patent: 1449385 (1923-03-01), Dieterich
patent: 1560135 (1925-11-01), Bell
patent: 3521472 (1970-07-01), Bringewald
patent: 3575035 (1971-04-01), Nokes
patent: 3750450 (1973-08-01), Sharp et al.
patent: 3847004 (1974-11-01), Bringewald
patent: 4023389 (1977-05-01), Dibble et al.
patent: 4055975 (1977-11-01), Serfozo et al.
patent: 4074559 (1978-02-01), Beane et al.
patent: 4580431 (1986-04-01), Oku et al.
patent: 4803880 (1989-02-01), Hopkins et al.
Metals Handbook 8th Ed., vol. 1, American Society for Metals, 1961, pp. 18 & 36.
International Search Report PCT/US94/12412 mailed 24 Feb. 1995.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Stepped segmented, closed-die forging does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stepped segmented, closed-die forging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepped segmented, closed-die forging will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1380952

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.