GB1019672A - Improvements in or relating to methods and apparatus for rolling screw taps - Google Patents
Improvements in or relating to methods and apparatus for rolling screw tapsInfo
- Publication number
- GB1019672A GB1019672A GB50018/63A GB5001863A GB1019672A GB 1019672 A GB1019672 A GB 1019672A GB 50018/63 A GB50018/63 A GB 50018/63A GB 5001863 A GB5001863 A GB 5001863A GB 1019672 A GB1019672 A GB 1019672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rolls
- rolling
- grooves
- threads
- pass
- 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
-
- 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
- B21H3/10—Making helical bodies or bodies having parts of helical shape twist-drills; screw-taps
Abstract
1,019,672. Producing screw taps; rolling. F. ERDELYI. Dec. 18, 1963 [Jan. 9, 1963], No. 50018/63. Headings B3A and B3M. Screw taps are produced by passing a heated blank through a number of driven profiling rolls forming a closed pass around the blank, the chip grooves first being rolled, followed by rolling of threads on the resulting lands. The rolls 24 for forming the chip grooves are situated in a plane 15 slightly to the left of the plane 16 of the thread forming rolls, any elongation of the bar due to groove rolling thus having no effect on the pitch of the threads rolled. An appropriate number of detachable profiled segments 10, 10a, 11 and 11a are attached to the rolls. The six rolls may alternatively be in the same plane, the grooves being rolled in one pass and the threads in a second pass. If desired the grooves can be formed in two stages with this arrangement, the second segment of the rolls 32 (Fig. 8, not shown) finishing the grooves in the second pass, simultaneously with the rolls 34 rolling the threads. Twisted screw taps can be produced by using skewed rolls. The blanks 1 are heated immediately prior to rolling by high-frequency induction heaters, or, if a slower heating method is employed, in an inert gas-filled chamber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE0024141 | 1963-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1019672A true GB1019672A (en) | 1966-02-09 |
Family
ID=7071257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB50018/63A Expired GB1019672A (en) | 1963-01-09 | 1963-12-18 | Improvements in or relating to methods and apparatus for rolling screw taps |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3347077A (en) |
| AT (1) | AT240680B (en) |
| GB (1) | GB1019672A (en) |
| NL (1) | NL6400068A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216425A (en) * | 2019-06-18 | 2019-09-10 | 湖南工学院 | The processing method that a kind of monodentate Precision Machining becomes groove width screw thread |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100785A (en) * | 1974-01-25 | 1978-07-18 | Bishop Arthur E | Method and apparatus for manufacturing valve components |
| DE3525244A1 (en) * | 1985-07-15 | 1987-01-15 | Hilti Ag | SPREADING ANCHOR |
| US8210779B2 (en) * | 2008-10-14 | 2012-07-03 | Kennametal Inc. | Cutting tap and method of making same |
| CN103624339A (en) * | 2013-12-10 | 2014-03-12 | 中国航空工业标准件制造有限责任公司 | Method for manufacturing warm rolling threads of high temperature alloy fastener |
| CN106975775B (en) * | 2016-01-15 | 2020-07-28 | 李仕清 | Rolling cutter special for same-side shifting surface |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1875362A (en) * | 1932-09-06 | The method of fo | ||
| US411780A (en) * | 1889-10-01 | Flanging-machine | ||
| US238953A (en) * | 1881-03-15 | Manufacture of twist-drills | ||
| US632862A (en) * | 1898-08-31 | 1899-09-12 | Horace L Arnold | Tap and reamer and method of making same. |
| US827533A (en) * | 1905-02-08 | 1906-07-31 | Frank E Johnson | Method of making screw-taps. |
| US2901932A (en) * | 1953-04-10 | 1959-09-01 | Erdelyi Ferenc | Method and apparatus for manufacturing tools with a rotational operating movement by rolling |
-
1963
- 1963-11-14 AT AT911963A patent/AT240680B/en active
- 1963-12-18 GB GB50018/63A patent/GB1019672A/en not_active Expired
-
1964
- 1964-01-08 NL NL6400068A patent/NL6400068A/xx unknown
- 1964-01-08 US US336449A patent/US3347077A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110216425A (en) * | 2019-06-18 | 2019-09-10 | 湖南工学院 | The processing method that a kind of monodentate Precision Machining becomes groove width screw thread |
Also Published As
| Publication number | Publication date |
|---|---|
| US3347077A (en) | 1967-10-17 |
| AT240680B (en) | 1965-06-10 |
| NL6400068A (en) | 1964-07-10 |
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