ES280827A1 - Fluted lobular thread-forming members - Google Patents
Fluted lobular thread-forming membersInfo
- Publication number
- ES280827A1 ES280827A1 ES0280827A ES280827A ES280827A1 ES 280827 A1 ES280827 A1 ES 280827A1 ES 0280827 A ES0280827 A ES 0280827A ES 280827 A ES280827 A ES 280827A ES 280827 A1 ES280827 A1 ES 280827A1
- Authority
- ES
- Spain
- Prior art keywords
- lobular
- fluted
- thread
- blank
- radius
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G7/00—Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
- B23G7/02—Tools for this purpose
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/48—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools threading tools
-
- 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
- B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A fluted thread forming member, such as a tap 15, for swaging threads in a parent body, is produced by extruding a blank 37 from wire stock to form a shank portion 18 which includes an odd number of flutes, the resulting convex tubular parts of the shank then being rolled between dies to form a thread. The radius of the resulting lobular threaded portions is smaller than the distance 43, Fig. 5, between the tip of a lobular portion and the work axis. Similarly, the radius of curvature of the roots is less than the distance between the axis and the root. A ram 61, Fig. 8, movable in a housing 49, forces the shank portion of the blank through a shaped die 53, an ejector 37 also being provided, and the subsequent rolling takes place between flat or curved dies.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US138478A US3209383A (en) | 1961-09-15 | 1961-09-15 | Fluted lobular thread-forming members |
Publications (1)
Publication Number | Publication Date |
---|---|
ES280827A1 true ES280827A1 (en) | 1963-02-01 |
Family
ID=22482195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0280827A Expired ES280827A1 (en) | 1961-09-15 | 1962-09-15 | Fluted lobular thread-forming members |
Country Status (4)
Country | Link |
---|---|
US (1) | US3209383A (en) |
BE (1) | BE621925A (en) |
ES (1) | ES280827A1 (en) |
GB (1) | GB1012741A (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3263533A (en) * | 1964-08-27 | 1966-08-02 | Textron Ind Inc | Screw extractor |
USRE28907E (en) * | 1967-06-05 | 1976-07-20 | Self-tapping threaded bushings | |
FR1556730A (en) * | 1967-06-05 | 1969-02-07 | ||
US3866510A (en) * | 1967-06-05 | 1975-02-18 | Carl B H Eibes | Self-tapping threaded bushings |
US3434168A (en) * | 1967-09-26 | 1969-03-25 | Maynard Mfg Co | Method of making a lobular threaded fastener |
US3492908A (en) * | 1969-01-17 | 1970-02-03 | Microdot Inc | Thread swaging screw or bolt |
US4161132A (en) * | 1975-06-05 | 1979-07-17 | Bulten-Kanthal Aktiebolog | Self-tapping screw |
US4069730A (en) * | 1976-06-03 | 1978-01-24 | Wales-Beech Corporation | Thread-forming screw |
US4235149A (en) * | 1978-08-17 | 1980-11-25 | Veldman Donald R | Self-thread creating fastener and method and apparatus for making the same |
US4315340A (en) * | 1978-08-17 | 1982-02-16 | Veldman Donald R | Method and apparatus for making a self-thread creating fastener |
US4724694A (en) * | 1984-07-05 | 1988-02-16 | The Fastron Company | Method of manufacturing a thread-forming screw |
JPS62251513A (en) * | 1986-04-23 | 1987-11-02 | レツクスノ−ド・インコ−ポレ−テツド | Burying fitting |
FR2610555A1 (en) * | 1987-02-05 | 1988-08-12 | Rineau Freres Outillage Armor | Tap with improved guidance |
JP3046746B2 (en) * | 1995-06-14 | 2000-05-29 | ミネベア株式会社 | Screw and screw manufacturing method |
US5961267A (en) * | 1998-06-23 | 1999-10-05 | Textron Inc. | Thread forming fastener |
US20040228705A1 (en) * | 2003-05-16 | 2004-11-18 | Abbott-Interfast Corporation. | Fasteners for composite material |
US7144208B2 (en) * | 2004-06-07 | 2006-12-05 | Kennametal Inc. | Low torque tap |
US8858144B2 (en) * | 2007-03-06 | 2014-10-14 | Dale E. Van Cor | Threaded fastener and fastener system |
DE102007036733A1 (en) * | 2007-08-03 | 2009-02-05 | Newfrey Llc, Newark | Threaded bolt and method for its production |
US7988396B2 (en) * | 2007-10-11 | 2011-08-02 | Handy & Harman | Deck screw |
DE102009000891B4 (en) * | 2009-02-16 | 2019-09-19 | Hilti Aktiengesellschaft | Method and threading tool, each for shaping an internal thread on a base body |
DE102014112165A1 (en) * | 2014-08-26 | 2016-03-03 | EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge | Thread forming tool, in particular thread rolling |
DE102014112164A1 (en) * | 2014-08-26 | 2016-03-03 | EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik für Präzisionswerkzeuge | Threading tool with gothic thread profile and method of making such a thread forming tool |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1048921A (en) * | 1912-02-19 | 1912-12-31 | Frederic E Wells | Die-blank. |
US2656740A (en) * | 1950-11-20 | 1953-10-27 | Emma G Bedker | Method of making thread cutting taps |
US2703419A (en) * | 1951-03-06 | 1955-03-08 | Barth Corp | Method and tool for swaging internal threads |
US2787798A (en) * | 1952-11-26 | 1957-04-09 | Rosan Joseph | Swaging tool for reconditioning deformed lock threads |
USRE24572E (en) * | 1956-04-03 | 1958-12-02 | Fluteless swaging tap | |
AT210236B (en) * | 1958-07-29 | 1960-07-25 | Strojirny A Slevarny Bohumira | Taps |
US2991491A (en) * | 1958-11-21 | 1961-07-11 | Besly Welles Corp | Fluteless swaging tap with sizing area increasing at a constant rate |
-
0
- BE BE621925D patent/BE621925A/xx unknown
-
1961
- 1961-09-15 US US138478A patent/US3209383A/en not_active Expired - Lifetime
-
1962
- 1962-08-30 GB GB33272/62A patent/GB1012741A/en not_active Expired
- 1962-09-15 ES ES0280827A patent/ES280827A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3209383A (en) | 1965-10-05 |
GB1012741A (en) | 1965-12-08 |
BE621925A (en) |
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