Metal deforming – Process – With attenuation – thickening – elongating or shortening of...
Patent
1997-01-14
1999-09-14
Larson, Lowell A.
Metal deforming
Process
With attenuation, thickening, elongating or shortening of...
B21J 502
Patent
active
059504811
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: 3443412 (1969-05-01), Webb
patent: 3521472 (1970-07-01), Bringewald
patent: 3575035 (1971-04-01), Nokes
patent: 3638471 (1972-02-01), Martin
patent: 3750450 (1973-08-01), Sharp et al.
patent: 3847004 (1974-11-01), Bringewald
patent: 4023389 (1977-05-01), Dibble et al.
patent: 4051708 (1977-10-01), Beane et al.
patent: 4055975 (1977-11-01), Serfozo et al.
patent: 4074559 (1978-02-01), Beane et al.
patent: 4096730 (1978-06-01), Martin
patent: 4391118 (1983-07-01), Martin
patent: 4516299 (1985-05-01), Martin
patent: 4580431 (1986-04-01), Oku et al.
patent: 4803880 (1989-02-01), Hopkins et al.
patent: 5000021 (1991-03-01), Nakamura et al.
patent: 5249451 (1993-10-01), Aranovsky et al.
patent: 5592847 (1997-01-01), Sarkisian et al.
Metal Handbook 8th Ed., vol. 1, American Society for Metals, 1961, pp. 18 & 36.
Palitsch John R.
Sarkisian John M.
Zecco, Jr. Joseph J.
Larson Lowell A.
Wyman-Gordon Company, Inc.
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