FR2445742A1 - Procede et appareil de production d'une vis autotaraudeuse et cette vis - Google Patents
Procede et appareil de production d'une vis autotaraudeuse et cette visInfo
- Publication number
- FR2445742A1 FR2445742A1 FR8000228A FR8000228A FR2445742A1 FR 2445742 A1 FR2445742 A1 FR 2445742A1 FR 8000228 A FR8000228 A FR 8000228A FR 8000228 A FR8000228 A FR 8000228A FR 2445742 A1 FR2445742 A1 FR 2445742A1
- Authority
- FR
- France
- Prior art keywords
- threads
- stainless steel
- tapping screws
- cooling
- liquid nitrogen
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
-
- 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
-
- 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
- B21H9/00—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass
- B21H9/02—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass for screw-rolling machines
Abstract
L'invention concerne un appareil de production de vis autotaraudeuse en acier inoxydable. Cet appareil comporte deux matrices opposées 22, 24 de roulage pouvant se déplacer l'une par rapport à l'autre et entre lesquelles des ébauches 38 d'organes de fixation sont amenées une à une par un rail 26 passant dans un tunnel isolant 40 à l'intérieur duquel un liquide de réfrigération est appliqué sur les ébauches afin de les refroidir avant qu'elles soient roulées. Domaine d'application : production de vis autotaraudeuses.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/001,976 US4289006A (en) | 1979-01-08 | 1979-01-08 | Apparatus for producing threaded self-tapping stainless steel screws |
US06/001,975 US4295351A (en) | 1979-01-08 | 1979-01-08 | Self-tapping stainless steel screw and method for producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2445742A1 true FR2445742A1 (fr) | 1980-08-01 |
Family
ID=26669748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8000228A Pending FR2445742A1 (fr) | 1979-01-08 | 1980-01-07 | Procede et appareil de production d'une vis autotaraudeuse et cette vis |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU5441080A (fr) |
FR (1) | FR2445742A1 (fr) |
NZ (1) | NZ192536A (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3952884A (en) * | 1975-02-26 | 1976-04-27 | The Hartford Special Machinery Company | Apparatus for feeding headed work blanks |
US4042421A (en) * | 1975-12-03 | 1977-08-16 | Union Carbide Corporation | Method for providing strong tough metal alloys |
-
1980
- 1980-01-07 AU AU54410/80A patent/AU5441080A/en not_active Abandoned
- 1980-01-07 FR FR8000228A patent/FR2445742A1/fr active Pending
- 1980-01-07 NZ NZ19253680A patent/NZ192536A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3952884A (en) * | 1975-02-26 | 1976-04-27 | The Hartford Special Machinery Company | Apparatus for feeding headed work blanks |
US4042421A (en) * | 1975-12-03 | 1977-08-16 | Union Carbide Corporation | Method for providing strong tough metal alloys |
Also Published As
Publication number | Publication date |
---|---|
NZ192536A (en) | 1984-02-03 |
AU5441080A (en) | 1980-07-17 |
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