FR2403844A1 - Procede de formage par frappe a froid - Google Patents
Procede de formage par frappe a froidInfo
- Publication number
- FR2403844A1 FR2403844A1 FR7729019A FR7729019A FR2403844A1 FR 2403844 A1 FR2403844 A1 FR 2403844A1 FR 7729019 A FR7729019 A FR 7729019A FR 7729019 A FR7729019 A FR 7729019A FR 2403844 A1 FR2403844 A1 FR 2403844A1
- Authority
- FR
- France
- Prior art keywords
- grooved
- shaft
- head
- conical head
- deform
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
- B21G3/00—Making pins, nails, or the like
- B21G3/12—Upsetting; Forming heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Procédé de formage par frappe à froid en matrice ouverte, notamment de têtes de forme aplatie sur une extrémité de pièce, avec un taux d'écrasement élevé. L'écrasement de la tête est effectué entre une matrice plate à surface lisse dans un logement de laquelle vient s'engager la partie de pièce non refoulée et un poinçon à surface frontale striée de stries sensiblement concentriques entre elles, ayant la forme du contour de tête à obtenir et s'écartant en ondes successives à partir de la surface faisant face au logement de la partie de pièce non refoulée de la pièce à former. Application en particulier à la fabrication de plots de fixation de silentblocs en une seule pièce par frappe à froid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7729019A FR2403844A1 (fr) | 1977-09-27 | 1977-09-27 | Procede de formage par frappe a froid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7729019A FR2403844A1 (fr) | 1977-09-27 | 1977-09-27 | Procede de formage par frappe a froid |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2403844A1 true FR2403844A1 (fr) | 1979-04-20 |
FR2403844B1 FR2403844B1 (fr) | 1982-04-23 |
Family
ID=9195812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7729019A Granted FR2403844A1 (fr) | 1977-09-27 | 1977-09-27 | Procede de formage par frappe a froid |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2403844A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0648558A1 (fr) * | 1993-10-14 | 1995-04-19 | Illinois Tool Works Inc. | Méthode et appareil de formage d'une tête d'un clou et clou ainsi formé |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2074774A (en) * | 1935-06-17 | 1937-03-23 | American Steel & Wire Co | Lead-headed nail |
US2718647A (en) * | 1952-11-29 | 1955-09-27 | Fanner Metal Products Company | Method of making copper coated nail from copper coated rod stock |
-
1977
- 1977-09-27 FR FR7729019A patent/FR2403844A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2074774A (en) * | 1935-06-17 | 1937-03-23 | American Steel & Wire Co | Lead-headed nail |
US2718647A (en) * | 1952-11-29 | 1955-09-27 | Fanner Metal Products Company | Method of making copper coated nail from copper coated rod stock |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0648558A1 (fr) * | 1993-10-14 | 1995-04-19 | Illinois Tool Works Inc. | Méthode et appareil de formage d'une tête d'un clou et clou ainsi formé |
Also Published As
Publication number | Publication date |
---|---|
FR2403844B1 (fr) | 1982-04-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |