GB1010335A - 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 plate

Info

Publication number
GB1010335A
GB1010335A GB3020162A GB3020162A GB1010335A GB 1010335 A GB1010335 A GB 1010335A GB 3020162 A GB3020162 A GB 3020162A GB 3020162 A GB3020162 A GB 3020162A GB 1010335 A GB1010335 A GB 1010335A
Authority
GB
United Kingdom
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
Application number
GB3020162A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1010335A publication Critical patent/GB1010335A/en
Expired legal-status Critical Current

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

1,010,335. Making grids; flanging. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 7, 1962, No. 30201/62. Headings B3A and B3Q. 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.
GB3020162A 1961-08-10 1962-08-07 Improvements in or relating to a method of forming embossed edges around holes in a metal plate Expired GB1010335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL268103 1961-08-10

Publications (1)

Publication Number Publication Date
GB1010335A true GB1010335A (en) 1965-11-17

Family

ID=19753221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3020162A Expired GB1010335A (en) 1961-08-10 1962-08-07 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638474A (en) * 1969-08-13 1972-02-01 Hedley G Hannaford Construction of punch dies
DE2614087A1 (en) * 1975-04-03 1976-10-14 Matsushita Electric Works Ltd PROCEDURE FOR REMOVING THE BUR FROM THE HAIR INLET HOLES ON THE OUTER BLADE OF ELECTRIC DRY SHAVERS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638474A (en) * 1969-08-13 1972-02-01 Hedley G Hannaford Construction of punch dies
DE2614087A1 (en) * 1975-04-03 1976-10-14 Matsushita Electric Works Ltd PROCEDURE FOR REMOVING THE BUR FROM THE HAIR INLET HOLES ON THE OUTER BLADE OF ELECTRIC DRY SHAVERS

Also Published As

Publication number Publication date
ES279887A1 (en) 1962-11-16
CH405983A (en) 1966-01-15
LU42182A1 (en) 1962-10-08
ES279890A1 (en) 1962-11-16

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