ATE39071T1 - PROCESS FOR COLD ROLLING A ROUND WORKPIECE WITH SEVERAL DIAMETERS. - Google Patents
PROCESS FOR COLD ROLLING A ROUND WORKPIECE WITH SEVERAL DIAMETERS.Info
- Publication number
- ATE39071T1 ATE39071T1 AT84300204T AT84300204T ATE39071T1 AT E39071 T1 ATE39071 T1 AT E39071T1 AT 84300204 T AT84300204 T AT 84300204T AT 84300204 T AT84300204 T AT 84300204T AT E39071 T1 ATE39071 T1 AT E39071T1
- Authority
- AT
- Austria
- Prior art keywords
- workpiece
- sizing
- round
- dies
- forming projections
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/022—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling combined with rolling splines, ribs, grooves or the like, e.g. using compound dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
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 dies 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',24b') 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 projections for forming projections for forming projections such as splines (82) and/or a helical thread (84) on the sized surfaces of the workpiece.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45832583A | 1983-01-17 | 1983-01-17 | |
EP84300204A EP0114108B1 (en) | 1983-01-17 | 1984-01-13 | Method for cold sizing a round workpiece having multiple diameters |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE39071T1 true ATE39071T1 (en) | 1988-12-15 |
Family
ID=23820346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT84300204T ATE39071T1 (en) | 1983-01-17 | 1984-01-13 | PROCESS FOR COLD ROLLING A ROUND WORKPIECE WITH SEVERAL DIAMETERS. |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP0284824A3 (en) |
AT (1) | ATE39071T1 (en) |
CA (1) | CA1228254A (en) |
DE (1) | DE3475488D1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0166758A4 (en) * | 1983-12-21 | 1987-10-19 | Anderson Cook Inc | Threading and projection forming on different size diameters. |
IT1279081B1 (en) * | 1995-11-29 | 1997-12-04 | Pi Gi Di G Parodi | PROCEDURE FOR THE CREATION OF A SPECIAL SCREW FOR FURNITURE HINGES AND SCREW OBTAINED WITH THIS PROCEDURE |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1469174A (en) * | 1916-11-25 | 1923-09-25 | John R Blakeslee | Method of making spherical articles |
US1446447A (en) * | 1917-10-04 | 1923-02-27 | Bock Bearing Company | Method of forming rollers for roller bearings |
US2632345A (en) * | 1946-01-16 | 1953-03-24 | Landis Machine Co | Apparatus for forming rods, bolts, or the like |
US2825251A (en) * | 1952-07-19 | 1958-03-04 | Lee P Rader | Method of rolling metal |
US3044329A (en) * | 1958-04-11 | 1962-07-17 | Bethlehem Steel Corp | Apparatus for multi-diameter thread rolling |
US3044332A (en) * | 1959-02-17 | 1962-07-17 | Olympic Screw & Rivet Corp | Method of making rivet pins |
GB1124802A (en) * | 1964-09-30 | 1968-08-21 | Marcovitch Jacob | The profiling of workpieces by rolling |
GB1049991A (en) * | 1965-03-05 | 1966-11-30 | Herbert Ltd A | Method and apparatus for rolling a screw thread and an annulus of serrations, in oneoperation, in a workpiece of circular cross-section |
IL25450A (en) * | 1965-03-29 | 1970-07-19 | Rotary Profile Anstalt | Profiling of annular workpieces |
DE1552190A1 (en) * | 1966-01-03 | 1971-02-18 | Rotary Profile Anstalt | Method and device for the manufacture of objects by rolling |
DE1602684A1 (en) * | 1967-02-07 | 1970-12-03 | Werkzeugmaschinenfabrik Bad Du | Tool for simultaneous rolling of different diameters with the same or different profiles, in particular thread profiles |
CH647430A5 (en) * | 1980-09-19 | 1985-01-31 | Grob Ernst Fa | DEVICE AND METHOD FOR COLD ROLLING PROFILES BY ROLLING ON THE SCOPE OF A ROTATING WORKPIECE. |
-
1984
- 1984-01-13 DE DE8484300204T patent/DE3475488D1/en not_active Expired
- 1984-01-13 AT AT84300204T patent/ATE39071T1/en not_active IP Right Cessation
- 1984-01-13 EP EP88103431A patent/EP0284824A3/en not_active Withdrawn
- 1984-01-13 EP EP84300204A patent/EP0114108B1/en not_active Expired
- 1984-01-16 CA CA000445362A patent/CA1228254A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1228254A (en) | 1987-10-20 |
EP0114108B1 (en) | 1988-12-07 |
EP0114108A3 (en) | 1984-10-17 |
EP0284824A2 (en) | 1988-10-05 |
EP0284824A3 (en) | 1988-10-19 |
DE3475488D1 (en) | 1989-01-12 |
EP0114108A2 (en) | 1984-07-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |