Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1985-10-15
1987-12-15
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72 88, B21B 108, B21B 2700
Patent
active
047124105
ABSTRACT:
A method and apparatus (12) for cold sizing a round workpiece (14) having round surfaces of cylindrical shapes that are coaxial about a central axis A of the workpiece and have different diameters. A support (54,55) rotatably mounts the workpiece (14) about its central axis A between a pair of die assemblies (24a, 24b) which are spaced from each other. Each die assembly (24a,24b) includes a plurality of dies (56,58,60,62) that are respectively aligned with the round surfaces (46,48,50,52) of the workpiece (14). Movement of the die assemblies in opposite directions as each other engages sizing surfaces (66,68,70,72) of the dies with the aligned round surfaces of the workpiece to pressure size the workpiece surfaces. In one embodiment of the sizing apparatus (12), the die assemblies (24a, 24b) have elongated shapes and are moved rectilinearly in a parallel relationship to each other to perform the sizing. Another rotary embodiment of the sizing apparatus (12') includes rotary die assemblies (24a',24 b') mounted by associated spindles (85) whose rotation likewise pressure sizes the round workpiece surfaces. Both embodiments of the sizing apparatus are disclosed as including forming productions for forming projections such as splines (82) and/or a helical thread (84) on the sized surfaces of the workpiece.
REFERENCES:
patent: Re22737 (1946-04-01), Bailey
patent: 194875 (1877-09-01), Luehrs
patent: 387184 (1888-07-01), Fairbairn et al.
patent: 2180555 (1939-11-01), Sipe
patent: 2364442 (1944-12-01), Hoern
patent: 2967448 (1961-01-01), Hallock
patent: 3044329 (1962-07-01), Seibert
patent: 3217342 (1965-11-01), Prutton
patent: 3495428 (1970-02-01), Marcovitch
patent: 3852992 (1974-12-01), Yamamoto
patent: 4155236 (1979-05-01), Jungesjo
patent: 4365495 (1982-12-01), Francis
patent: 4397174 (1983-08-01), Jungesjo
patent: 4418454 (1983-12-01), Killop
patent: 4488418 (1984-12-01), Fitzpatrick
Deformations of Metallurgical Terms by American Society for Metals, copyright 1977.
Anderson-Cook Inc.
Larson Lowell A.
LandOfFree
Method and apparatus for cold sizing a round workpiece having mu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for cold sizing a round workpiece having mu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for cold sizing a round workpiece having mu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1212782