Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Plural or complex apparatus
Patent
1980-06-02
1982-03-09
Larson, Lowell A.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Plural or complex apparatus
72317, B21D 4104
Patent
active
043182917
ABSTRACT:
A tube or rod end forming apparatus comprises a rotary head (12) provided with a series of angularly spaced dies (30) for cooperation with a tube or rod held by a clamping device (10) which locates the tube or rod in alignment with the lowermost die (30). The head (12) is angularly indexable by means of an arm (50) which is pivotal about the rotary axis of the head (12) and is provided with a piston and cylinder operated plunger (52) for cooperation with sockets (56) in the head (12). The arm (50) is pivoted by a piston and cylinder (58) to effect indexing of the head (12). This arrangement allows accurate indexing of the head while positively holding it captive against rotation while the head executes a forming operation. The clamping device is so constructed that its jaws (70, 72) can be readily replaced or re-orientated for use with different tube diameters without the need for any bolting or like fastening devices. The apparatus can be automatically controlled to execute a series of working strokes whose lengths vary according to the die size, the head being returned to a predetermined datum position on completion of the working cycle.
REFERENCES:
patent: 1683661 (1928-09-01), Felding
patent: 1962944 (1934-06-01), Spatta
patent: 2442224 (1948-05-01), Vaill
patent: 3059686 (1962-10-01), Franck
patent: 4027518 (1977-06-01), Ribback
Larson Lowell A.
Marshall, Jr. C. O.
Stevens & Bullivant Limited
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