Thread rolling dies

Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work

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Details

72469, B21H 306

Patent

active

048627186

ABSTRACT:
Short thread rolling dies for forming a thread on a cylindrical body are disclosed comprising a face having a working configuration formed thereon for producing a thread on the cylindrical body with the face comprising a ramp surface inclined upwardly from a full form forward portion of the die to a height of from about one-third to about one-half thread depth and a dwell surface extending from the ramp surface to a finish portion of the die. The dwell surface has a length of from about two to about three times the circumference of the cylindrical body.

REFERENCES:
patent: 3176491 (1965-04-01), Mau et al.
patent: 3195156 (1965-07-01), Phipard, Jr.
patent: 3260100 (1966-07-01), Wieber
patent: 3538739 (1970-11-01), Orlomoski
patent: 3654791 (1972-04-01), Loos et al.
patent: 3910099 (1975-10-01), Wilson
patent: 4136416 (1979-01-01), Thomas
patent: 4546639 (1985-10-01), Corrette
patent: 4576033 (1986-03-01), Corrette
patent: 4631947 (1986-12-01), Corrette
patent: 4713954 (1987-12-01), Corrette
Industrial Price List 3651--Hi-Life.RTM. Precision Tools, "Precision Flat Thread Rolling Dies", pp. 1-18, Dec. 1, 1975.
Advertising Brochure--SPS Technologies Hi-Life.RTM. Precision Tools, Jenkintown, Pa.

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