GB639061A - Method and apparatus for forming screw threads - Google Patents
Method and apparatus for forming screw threadsInfo
- Publication number
- GB639061A GB639061A GB23992/47A GB2399247A GB639061A GB 639061 A GB639061 A GB 639061A GB 23992/47 A GB23992/47 A GB 23992/47A GB 2399247 A GB2399247 A GB 2399247A GB 639061 A GB639061 A GB 639061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piece
- work
- roll
- thread
- threads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- B21H3/04—Making by means of profiled-rolls or die rolls
- B21H3/042—Thread-rolling heads
- B21H3/048—Thread-rolling heads working tangentially
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
Abstract
639,061. Rolling screw-threads. BEDKER, L. W. Aug. 29, 1947, No. 23992 Convention date, Sept. 3, 1946. [Class 83 (iv)] A thread-rolling device comprises means for rotating a work - piece, a thread roll having helical threads formed thereon of opposite hand to the threads to be rolled and of approximately equal helix angle, a support for said roll arranged to present said roll to the work-piece with its axis inclined to the axis of the work-piece in a direction to cause the portions of the threads thereof engaging the work-piece to extend more nearly parallel to a plane perpendicular to the axis of the workpiece than would be the case if the axes of the work-piece and roll were parallel, and means for relatively feeding said roll to depth in said work-piece. The angle' of inclination is less than, and preferably one half of, the helix angle of the rolled thread. Rolls 10, one of which is mounted for adjustment by bolts 15, 16, are connected by gears 17-21 so that they are driven in synchronism by the rotating workpiece 22. In examples quoted, thread rolls having three start threads are used. More than two thread rolls may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US639061XA | 1946-09-03 | 1946-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB639061A true GB639061A (en) | 1950-06-21 |
Family
ID=22052276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23992/47A Expired GB639061A (en) | 1946-09-03 | 1947-08-29 | Method and apparatus for forming screw threads |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB639061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020507A (en) * | 2021-04-08 | 2021-06-25 | 北京铁科首钢轨道技术股份有限公司 | Thread rolling forming process for spiral spike |
-
1947
- 1947-08-29 GB GB23992/47A patent/GB639061A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020507A (en) * | 2021-04-08 | 2021-06-25 | 北京铁科首钢轨道技术股份有限公司 | Thread rolling forming process for spiral spike |
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