GB789094A - Improvements relating to dies for sheet metal - Google Patents

Improvements relating to dies for sheet metal

Info

Publication number
GB789094A
GB789094A GB16739/55A GB1673955A GB789094A GB 789094 A GB789094 A GB 789094A GB 16739/55 A GB16739/55 A GB 16739/55A GB 1673955 A GB1673955 A GB 1673955A GB 789094 A GB789094 A GB 789094A
Authority
GB
United Kingdom
Prior art keywords
die
parts
weight
polymeric material
base member
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
GB16739/55A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB789094A publication Critical patent/GB789094A/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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/20—Making tools by operations not covered by a single other subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/60—Releasing, lubricating or separating agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

A die for stamping sheet-metal parts such as automobile roof-panels comprises a metal base member 6 having secured thereto a metal insert member 8 which provides a wear-resistant surface 10 around the periphery of the die and a hardened polymeric material 12 which forms the inner surface 14 of the die. The polymeric material 12 may consist of about 100 parts by weight of epoxy resin, about 250 parts by weight of Portland cement and about 10 parts by weight of catalyst, e.g. diethylene triamine. The material is bonded to the base member 6 by means of an intermediate resin layer 18 consisting of about 100 parts by weight of epoxy <PICT:0789094/IV (a)/1> <PICT:0789094/IV (a)/2> resin, about 50 parts by weight of silica flour and about 25 parts by weight of diethylene triamine. An epoxy resin consisting of a condensation product of epichlorohydrin with bisphenol or glycerol is preferred. Headed pins 16 assist in maintaining the polymeric material in place on the base member. The thickness of the material should be between 1 and 1.5 inches and any portions of the die requiring a greater depth of material are built up with fibre-glass matting impregnated with the polymeric material. In making the die a plaster-cast 19 coated with wax paste and powdered mica is fixed to the die assembly and the polymeric material is inserted through a spout 20 and allowed to cure for about 30 to 40 hours. Fig. 4 shows a punching and stamping die for vehicle roof sections containing the rear window opening. Steel inserts 24 and 26 are provided, the former forming the cutting or punching edge 28 for the window opening and the latter forming the die periphery.
GB16739/55A 1954-06-24 1955-06-10 Improvements relating to dies for sheet metal Expired GB789094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US789094XA 1954-06-24 1954-06-24

Publications (1)

Publication Number Publication Date
GB789094A true GB789094A (en) 1958-01-15

Family

ID=22146945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16739/55A Expired GB789094A (en) 1954-06-24 1955-06-10 Improvements relating to dies for sheet metal

Country Status (1)

Country Link
GB (1) GB789094A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241208A (en) * 1952-05-15 1966-03-22 Colgate Palmolive Co Apparatus for pressing detergent bars and cakes
FR2642341A1 (en) * 1989-01-30 1990-08-03 N Proizv Ob Tulatschermet TOOL FOR BINDING A SHEET

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241208A (en) * 1952-05-15 1966-03-22 Colgate Palmolive Co Apparatus for pressing detergent bars and cakes
FR2642341A1 (en) * 1989-01-30 1990-08-03 N Proizv Ob Tulatschermet TOOL FOR BINDING A SHEET

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