Full enclosed forging apparatus

Details Full enclosed forging apparatus Full enclosed forging apparatus

1999-12-09

2001-07-17

Larson, Lowell A. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

C072S354800

Reexamination Certificate

active

06260400

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a full enclosed forging apparatus having durability for a compact and simple construction in which full enclosed forging (double-action forging) is simply and economically conducted with a small single-action press machine.
2. Description of the Related Art
Conventionally, full enclosed forging (double-action forging) is conducted in case that a material is formed into a complicated configuration with a press machine in one production process.
This full enclosed forging can perform a first movement and a following second movement in one production process with {circle around (1)} using a double-action press machine, or {circle around (2)} auxiliary mechanisms such as a slider mechanism, a link mechanism, etc. attached to a single-action forging machine.
However, there is a problem that the above double-action press machine of {circle around (1)} has an oil-hydraulic apparatus and its control mechanism having complicated construction, and equipment cost rises thereby. And, the method of {circle around (2)}, in which the auxiliary mechanisms are attached to the single-action press machine, can not be applied to a small press machine because large space for installation of the auxiliary mechanism is necessary, equipment cost increases for necessity of new installation of a large press machine, and the auxiliary mechanism also has problems in durability.
To solve the problems above, it is therefore an object of the present invention to provide a full enclosed forging apparatus having durability for a compact and simple construction in which full enclosed forging can be conducted simply and economically with a small single-action press machine.


REFERENCES:
patent: 4590782 (1986-05-01), Leykamm et al.
patent: 4653310 (1987-03-01), Urata et al.
patent: 63-220941 (1988-09-01), None
patent: 6-91339 (1994-04-01), None

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