Metal deforming – By use of tool acting during relative rotation between tool... – Tool orbiting or rotating about an axis
Patent
1986-12-29
1988-09-20
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
Tool orbiting or rotating about an axis
B21H 304
Patent
active
047716258
ABSTRACT:
An apparatus for forming tapered threads on a pipe such as a gas pipe comprises a base table on which a chuck device for holding a pipe is mounted in an opposing relation to a casing also mounted on the base table. A rotary disc is mounted on one side of the casing to be rotatable and a plurality of, at least three, die supporting plates are pivoted on one side of a rotary member integrally formed to the rotary disc. A plurality of rolling dies detachably attached to the disc supporting plates, respectively, and the rolling dies are rotated through a power transmission mechanism operatively connected to a drive source. To the respective die supporting plates are fitted a operational wheel to be movable axially with respect to the rotary members, the operational wheel being provided with a circumferential groove formed on the outer periphery thereof, to which a slidable ring is fitted, and a manipulative wheel is pivoted by a pair of pins positioned in the diametrical direction to the slidable ring, the manipulative wheel shifted by 90.degree. with respect to the pins being pivoted to the casing.
REFERENCES:
patent: 1368413 (1921-02-01), Stiefel
patent: 2583094 (1952-01-01), Girz
patent: 3058196 (1962-10-01), Bour
patent: 3379042 (1968-04-01), Brown
patent: 3522747 (1970-08-01), Brownstein
Tanaka Shigeyoshi
Watanabe Takashi
Kabushiki Kaisha Watanabe Kogyo
Larson Lowell A.
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