ES279887A1 - Improvements in or relating to a method of forming embossed edges around holes in a metal plate - Google Patents
Improvements in or relating to a method of forming embossed edges around holes in a metal plateInfo
- Publication number
- ES279887A1 ES279887A1 ES0279887A ES279887A ES279887A1 ES 279887 A1 ES279887 A1 ES 279887A1 ES 0279887 A ES0279887 A ES 0279887A ES 279887 A ES279887 A ES 279887A ES 279887 A1 ES279887 A1 ES 279887A1
- Authority
- ES
- Spain
- Prior art keywords
- holes
- plate
- unsupported
- plane
- portions
- 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
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/04—Stamping using rigid devices or tools for dimpling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
- B26B19/384—Dry-shaver foils; Manufacture thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Punching Or Piercing (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
A method of forming embossed edges around holes in a metal plate, wherein the plate is provided with a pattern of holes and is then arranged on a support such that the edge portions of the plate around said holes are unsupported and wherein the portions are simultaneously subjected to a uniformily distributed pressure to press them out of the plane of the plate on the side adjacent the support, the edge faces of the portions thereafter being ground, polished or lapped parallel to the plane of the plate. A shear plate 31 having holes 32 is positioned on a jig 34 having complementary holes 35, the mouths of which have a 60 degrees countersink, the largest diameter of which is greater than that of the holes 32. The minimum width between holes is not more than 0À5 mm. and the thickness of the plate is not more than 0À25 mm. A pressure plate 37 provided with an elastic material layer 38 of, e.g., rubber, is lowered into contact with the plate 31 and the unsupported edge portions of the holes 32 are bent downwardly against the countersinks 36. The plate is removed and the edge surfaces of the holes are ground, polished or lapped parallel to the plane of the plate. In a modification the elastic layer is provided with a plurality of spherical bodies, e.g. steel balls, having a diameter greater than the holes 32 which deform the unsupported edges of the holes. The shear plates thus formed are suitable for use in an electric dry-shaving apparatus.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL268103 | 1961-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES279887A1 true ES279887A1 (en) | 1962-11-16 |
Family
ID=19753221
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0279890A Expired ES279890A1 (en) | 1961-08-10 | 1962-08-08 | Improvements in or relating to a method of forming embossed edges around holes in a metal plate |
| ES0279887A Expired ES279887A1 (en) | 1961-08-10 | 1962-08-08 | Improvements in or relating to a method of forming embossed edges around holes in a metal plate |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0279890A Expired ES279890A1 (en) | 1961-08-10 | 1962-08-08 | Improvements in or relating to a method of forming embossed edges around holes in a metal plate |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH405983A (en) |
| ES (2) | ES279890A1 (en) |
| GB (1) | GB1010335A (en) |
| LU (1) | LU42182A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638474A (en) * | 1969-08-13 | 1972-02-01 | Hedley G Hannaford | Construction of punch dies |
| JPS5841869B2 (en) * | 1975-04-03 | 1983-09-14 | 松下電工株式会社 | electric razor |
-
1962
- 1962-08-07 CH CH941962A patent/CH405983A/en unknown
- 1962-08-07 GB GB3020162A patent/GB1010335A/en not_active Expired
- 1962-08-07 LU LU42182D patent/LU42182A1/xx unknown
- 1962-08-08 ES ES0279890A patent/ES279890A1/en not_active Expired
- 1962-08-08 ES ES0279887A patent/ES279887A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| LU42182A1 (en) | 1962-10-08 |
| GB1010335A (en) | 1965-11-17 |
| CH405983A (en) | 1966-01-15 |
| ES279890A1 (en) | 1962-11-16 |
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