Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1976-02-19
1977-03-29
Roethel, John E.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
291484B, 269254CS, B21H 114
Patent
active
040141977
ABSTRACT:
Ball rounding apparatus includes a rotatable inner rolling die and a stationary outer die. Forged steel balls travel through an arcuate path between the dies for final rounding. The stationary outer die is made up from a plurality of segments known as die shoes. A plurality of circumferentially-spaced die shoe tension take up devices bias the die shoes toward the inner die. The die shoe tension take up devices include a one-piece plunger having an enlarged head with a flat outer surface engaging the die shoes. An integral smaller diameter shaft extends from the head of the plunger, and a small radius is formed between the shaft and head. The plunger shaft is guided for longitudinal movement through a guide sleeve, and a coil spring is positioned between the plunger head and guide sleeve for urging the head into engagement with the die shoes. The guide sleeve is adjustable for varying the distance between such sleeve and the plunger head to vary the force exerted by the coil spring. The end portion of the plunger shaft opposite from the head is externally threaded and receives an adjustment nut which bears against the guide sleeve for limiting the distance which the head may project from the guide sleeve. The dies are removably mounted between spaced-apart end plate assemblies, and the rotatable inner die is mounted on a shaft rotatable in bearings releasably secured at the bottoms of vertical slots in the end plate assemblies so that the shaft and inner die can be vertically lifted from between the end plate assemblies.
REFERENCES:
patent: 1965489 (1934-07-01), Coates
patent: 2208595 (1940-07-01), Osborne
patent: 2929591 (1960-03-01), Etchells et al.
patent: 3552116 (1971-01-01), Siddell et al.
patent: 3739819 (1973-06-01), Swanson
Gonzalez Jesus
Lupia Arthur W.
Thurman Garrett
Border Steel Mills, Inc.
Roethel John E.
Sachs Edward E.
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